aboutsummaryrefslogtreecommitdiff
path: root/shell/ash.c
diff options
context:
space:
mode:
Diffstat (limited to 'shell/ash.c')
-rw-r--r--shell/ash.c2824
1 files changed, 2785 insertions, 39 deletions
diff --git a/shell/ash.c b/shell/ash.c
index 841ffe880..ae49687da 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -15,6 +15,20 @@
15 * 15 *
16 * Licensed under GPLv2 or later, see file LICENSE in this source tree. 16 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
17 */ 17 */
18
19/*
20 * MinGW notes
21 *
22 * - Environment variables from Windows will all be turned to uppercase.
23 * - PATH accepts both ; and : as separator, but can't be mixed
24 * - command without ".exe" extension is still understood as executable
25 * - shell scripts on the path are detected by the presence of '#!'
26 * - both / and \ are supported in PATH. Usually you must use /
27 * - job control doesn't work, though the jobs builtin is available
28 * - trap doesn't work for signals, only EXIT
29 * - /dev/null is supported for redirection
30 */
31
18//config:config SHELL_ASH 32//config:config SHELL_ASH
19//config: bool #hidden option 33//config: bool #hidden option
20//config: depends on !NOMMU 34//config: depends on !NOMMU
@@ -170,11 +184,36 @@
170//config: you to run the specified command or builtin, 184//config: you to run the specified command or builtin,
171//config: even when there is a function with the same name. 185//config: even when there is a function with the same name.
172//config: 186//config:
187//config:
188//config:config ASH_NOCONSOLE
189//config: bool "'noconsole' option"
190//config: default y
191//config: depends on (ASH || SH_IS_ASH || BASH_IS_ASH) && PLATFORM_MINGW32
192//config: help
193//config: Enable support for the 'noconsole' option, which attempts to
194//config: conceal the console normally associated with a command line
195//config: application. This may be useful when running a shell script
196//config: from a GUI application. Also the 'noiconify' option, which
197//config: controls whether the console is iconified or hidden.
198//config:
199//config:config ASH_GLOB_OPTIONS
200//config: bool "Globbing options"
201//config: default y
202//config: depends on (ASH || SH_IS_ASH || BASH_IS_ASH) && PLATFORM_MINGW32
203//config: help
204//config: Enable support for options to control globbing:
205//config: - 'nocaseglob' allows case-insensitive filename globbing
206//config: - 'nohiddenglob' allows hidden files to be omitted from globbing
207//config: - 'nohidsysglob' allows hidden system files to be omitted
208//config:
173//config:endif # ash options 209//config:endif # ash options
174 210
175//applet:IF_ASH(APPLET(ash, BB_DIR_BIN, BB_SUID_DROP)) 211//applet:IF_ASH(APPLET(ash, BB_DIR_BIN, BB_SUID_DROP))
176// APPLET_ODDNAME:name main location suid_type help 212// APPLET_ODDNAME:name main location suid_type help
177//applet:IF_SH_IS_ASH( APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, ash)) 213//applet:IF_SH_IS_ASH( APPLET_ODDNAME(sh, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
214//applet:IF_PLATFORM_MINGW32(
215//applet:IF_SH_IS_ASH( APPLET_ODDNAME(lash, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
216//applet:)
178//applet:IF_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, BB_DIR_BIN, BB_SUID_DROP, ash)) 217//applet:IF_BASH_IS_ASH(APPLET_ODDNAME(bash, ash, BB_DIR_BIN, BB_SUID_DROP, ash))
179 218
180//kbuild:lib-$(CONFIG_SHELL_ASH) += ash.o ash_ptr_hack.o shell_common.o 219//kbuild:lib-$(CONFIG_SHELL_ASH) += ash.o ash_ptr_hack.o shell_common.o
@@ -195,7 +234,17 @@
195 234
196#define PROFILE 0 235#define PROFILE 0
197 236
237/*
238 * Only one of JOBS or JOBS_WIN32 is enabled at a time (or neither).
239 * JOBS_WIN32 doesn't enable job control, just some job-related features.
240 */
241#if ENABLE_PLATFORM_MINGW32
242#define JOBS_WIN32 ENABLE_ASH_JOB_CONTROL
243#define JOBS 0
244#else
245#define JOBS_WIN32 0
198#define JOBS ENABLE_ASH_JOB_CONTROL 246#define JOBS ENABLE_ASH_JOB_CONTROL
247#endif
199 248
200#include <fnmatch.h> 249#include <fnmatch.h>
201#include <sys/times.h> 250#include <sys/times.h>
@@ -206,6 +255,10 @@
206#else 255#else
207# define NUM_SCRIPTS 0 256# define NUM_SCRIPTS 0
208#endif 257#endif
258#if ENABLE_PLATFORM_MINGW32
259# include <conio.h>
260# include "lazyload.h"
261#endif
209 262
210/* So far, all bash compat is controlled by one config option */ 263/* So far, all bash compat is controlled by one config option */
211/* Separate defines document which part of code implements what */ 264/* Separate defines document which part of code implements what */
@@ -316,10 +369,94 @@ typedef long arith_t;
316# define unlikely(cond) (cond) 369# define unlikely(cond) (cond)
317#endif 370#endif
318 371
372#if !ENABLE_PLATFORM_MINGW32
373# define is_relative_path(path) ((path)[0] != '/')
374#endif
375
319#if !BB_MMU 376#if !BB_MMU
320# error "Do not even bother, ash will not run on NOMMU machine" 377# error "Do not even bother, ash will not run on NOMMU machine"
321#endif 378#endif
322 379
380#if ENABLE_PLATFORM_MINGW32
381# define FORKSHELL_DEBUG 0
382
383union node;
384struct strlist;
385struct job;
386
387#if defined(_WIN64)
388# define ALIGN64 ALIGNED(16)
389#else
390# define ALIGN64
391#endif
392
393struct forkshell {
394 /* filled by forkshell_copy() */
395 struct globals_misc *gmp;
396 struct globals_var *gvp;
397 struct tblentry **cmdtable;
398#if ENABLE_ASH_ALIAS
399 struct alias **atab;
400#endif
401#if MAX_HISTORY
402 char **history;
403 int cnt_history;
404#endif
405#if JOBS_WIN32
406 struct job *jobtab;
407 unsigned njobs;
408 struct job *curjob;
409#endif
410 HANDLE hMapFile;
411 char *old_base;
412 int size;
413# if FORKSHELL_DEBUG
414 int funcblocksize;
415 int funcstringsize;
416# endif
417 int relocatesize;
418
419 /* type of forkshell */
420 int fpid;
421
422 /* generic data, used by forkshell_child */
423 int mode;
424 int nprocs;
425#if JOBS_WIN32
426 int jpnull;
427#endif
428
429 /* optional data, used by forkshell_child */
430 int flags;
431 int fd[3];
432 union node *n;
433 char **argv;
434 const char *path;
435} ALIGN64;
436
437enum {
438 FS_OPENHERE,
439 FS_EVALBACKCMD,
440 FS_EVALSUBSHELL,
441 FS_EVALPIPE,
442 FS_SHELLEXEC
443};
444
445static struct forkshell* forkshell_prepare(struct forkshell *fs);
446static void forkshell_init(const char *idstr);
447static void *sticky_mem_start, *sticky_mem_end;
448static void sticky_free(void *p);
449# define free(p) sticky_free(p)
450#if !JOBS && !JOBS_WIN32
451#define spawn_forkshell(fs, jp, n, mode) spawn_forkshell(fs, jp, mode)
452#endif
453static void spawn_forkshell(struct forkshell *fs, struct job *jp,
454 union node *n, int mode);
455# if FORKSHELL_DEBUG
456static void forkshell_print(FILE *fp0, struct forkshell *fs, const char **notes);
457# endif
458#endif
459
323/* ============ Hash table sizes. Configurable. */ 460/* ============ Hash table sizes. Configurable. */
324 461
325#define VTABSIZE 39 462#define VTABSIZE 39
@@ -347,7 +484,11 @@ static const char *const optletters_optnames[] ALIGN_PTR = {
347 "m" "monitor", 484 "m" "monitor",
348 "n" "noexec", 485 "n" "noexec",
349/* Ditto: bash has no "set -s", "set -c" */ 486/* Ditto: bash has no "set -s", "set -c" */
487#if !ENABLE_PLATFORM_MINGW32
350 "s" "", 488 "s" "",
489#else
490 "s" "stdin",
491#endif
351 "c" "", 492 "c" "",
352 "x" "xtrace", 493 "x" "xtrace",
353 "v" "verbose", 494 "v" "verbose",
@@ -364,6 +505,18 @@ static const char *const optletters_optnames[] ALIGN_PTR = {
364 ,"\0" "nolog" 505 ,"\0" "nolog"
365 ,"\0" "debug" 506 ,"\0" "debug"
366#endif 507#endif
508#if ENABLE_PLATFORM_MINGW32
509 ,"X" "winxp"
510#endif
511#if ENABLE_ASH_NOCONSOLE
512 ,"\0" "noconsole"
513 ,"\0" "noiconify"
514#endif
515#if ENABLE_ASH_GLOB_OPTIONS
516 ,"\0" "nocaseglob"
517 ,"\0" "nohiddenglob"
518 ,"\0" "nohidsysglob"
519#endif
367}; 520};
368//bash 4.4.23 also has these opts (with these defaults): 521//bash 4.4.23 also has these opts (with these defaults):
369//braceexpand on 522//braceexpand on
@@ -437,6 +590,11 @@ struct parsefile {
437 590
438 /* Number of outstanding calls to pungetc. */ 591 /* Number of outstanding calls to pungetc. */
439 int unget; 592 int unget;
593
594#if ENABLE_PLATFORM_MINGW32
595 /* True if a trailing CR from a previous read was left unprocessed. */
596 int cr;
597#endif
440}; 598};
441 599
442 600
@@ -460,17 +618,31 @@ struct jmploc {
460struct globals_misc { 618struct globals_misc {
461 uint8_t exitstatus; /* exit status of last command */ 619 uint8_t exitstatus; /* exit status of last command */
462 uint8_t back_exitstatus;/* exit status of backquoted command */ 620 uint8_t back_exitstatus;/* exit status of backquoted command */
621#if !ENABLE_PLATFORM_MINGW32
463 smallint job_warning; /* user was warned about stopped jobs (can be 2, 1 or 0). */ 622 smallint job_warning; /* user was warned about stopped jobs (can be 2, 1 or 0). */
623#endif
464 smallint inps4; /* Prevent PS4 nesting. */ 624 smallint inps4; /* Prevent PS4 nesting. */
625#if !ENABLE_PLATFORM_MINGW32
465 smallint vforked; 626 smallint vforked;
627#endif
466 int savestatus; /* exit status of last command outside traps */ 628 int savestatus; /* exit status of last command outside traps */
467 int rootpid; /* pid of main shell */ 629 int rootpid; /* pid of main shell */
468 /* shell level: 0 for the main shell, 1 for its children, and so on */ 630 /* shell level: 0 for the main shell, 1 for its children, and so on */
469 int shlvl; 631 int shlvl;
632#if ENABLE_PLATFORM_MINGW32
633 int loopnest; /* current loop nesting level */
634#endif
470#define rootshell (!shlvl) 635#define rootshell (!shlvl)
471 int errlinno; 636 int errlinno;
472 637
473 char *minusc; /* argument to -c option */ 638 char *minusc; /* argument to -c option */
639#if ENABLE_PLATFORM_MINGW32
640 char *dirarg; /* argument to -d option */
641 char *title; /* argument to -t option */
642#if ENABLE_SUW32
643 int delayexit; /* set by -N option */
644# endif
645#endif
474 646
475 char *curdir; // = nullstr; /* current working directory */ 647 char *curdir; // = nullstr; /* current working directory */
476 char *physdir; // = nullstr; /* physical working directory */ 648 char *physdir; // = nullstr; /* physical working directory */
@@ -486,8 +658,12 @@ struct globals_misc {
486 * but we do read it async. 658 * but we do read it async.
487 */ 659 */
488 volatile /*sig_atomic_t*/ smallint pending_int; /* 1 = got SIGINT */ 660 volatile /*sig_atomic_t*/ smallint pending_int; /* 1 = got SIGINT */
661#if !ENABLE_PLATFORM_MINGW32
489 volatile /*sig_atomic_t*/ smallint gotsigchld; /* 1 = got SIGCHLD */ 662 volatile /*sig_atomic_t*/ smallint gotsigchld; /* 1 = got SIGCHLD */
490 volatile /*sig_atomic_t*/ smallint pending_sig; /* last pending signal */ 663 volatile /*sig_atomic_t*/ smallint pending_sig; /* last pending signal */
664#else
665 volatile /*sig_atomic_t*/ smallint waitcmd_int; /* SIGINT in wait */
666#endif
491 smallint exception_type; /* kind of exception: */ 667 smallint exception_type; /* kind of exception: */
492#define EXINT 0 /* SIGINT received */ 668#define EXINT 0 /* SIGINT received */
493#define EXERROR 1 /* a generic error */ 669#define EXERROR 1 /* a generic error */
@@ -522,8 +698,21 @@ struct globals_misc {
522# define nolog optlist[16 + BASH_PIPEFAIL] 698# define nolog optlist[16 + BASH_PIPEFAIL]
523# define debug optlist[17 + BASH_PIPEFAIL] 699# define debug optlist[17 + BASH_PIPEFAIL]
524#endif 700#endif
701#if ENABLE_PLATFORM_MINGW32
702# define winxp optlist[16 + BASH_PIPEFAIL + 2*(DEBUG != 0)]
703# if ENABLE_ASH_NOCONSOLE
704# define noconsole optlist[17 + BASH_PIPEFAIL + 2*(DEBUG != 0)]
705# define noiconify optlist[18 + BASH_PIPEFAIL + 2*(DEBUG != 0)]
706# endif
707# if ENABLE_ASH_GLOB_OPTIONS
708# define nocaseglob optlist[17 + BASH_PIPEFAIL + 2*(DEBUG != 0) + 2*ENABLE_ASH_NOCONSOLE]
709# define nohiddenglob optlist[18 + BASH_PIPEFAIL + 2*(DEBUG != 0) + 2*ENABLE_ASH_NOCONSOLE]
710# define nohidsysglob optlist[19 + BASH_PIPEFAIL + 2*(DEBUG != 0) + 2*ENABLE_ASH_NOCONSOLE]
711# endif
712#endif
525 713
526 /* trap handler commands */ 714 /* trap handler commands */
715#if !ENABLE_PLATFORM_MINGW32
527 /* 716 /*
528 * Sigmode records the current value of the signal handlers for the various 717 * Sigmode records the current value of the signal handlers for the various
529 * modes. A value of zero means that the current handler is not known. 718 * modes. A value of zero means that the current handler is not known.
@@ -537,6 +726,7 @@ struct globals_misc {
537 726
538 /* indicates specified signal received */ 727 /* indicates specified signal received */
539 uint8_t gotsig[NSIG - 1]; /* offset by 1: "signal" 0 is meaningless */ 728 uint8_t gotsig[NSIG - 1]; /* offset by 1: "signal" 0 is meaningless */
729#endif
540 uint8_t may_have_traps; /* 0: definitely no traps are set, 1: some traps may be set */ 730 uint8_t may_have_traps; /* 0: definitely no traps are set, 1: some traps may be set */
541 char *trap[NSIG + 1]; 731 char *trap[NSIG + 1];
542/* trap[0] is EXIT trap, trap[NTRAP_ERR] is ERR trap, other trap[i] are signal traps */ 732/* trap[0] is EXIT trap, trap[NTRAP_ERR] is ERR trap, other trap[i] are signal traps */
@@ -567,12 +757,24 @@ extern struct globals_misc *BB_GLOBAL_CONST ash_ptr_to_globals_misc;
567#define back_exitstatus (G_misc.back_exitstatus ) 757#define back_exitstatus (G_misc.back_exitstatus )
568#define job_warning (G_misc.job_warning) 758#define job_warning (G_misc.job_warning)
569#define inps4 (G_misc.inps4 ) 759#define inps4 (G_misc.inps4 )
760#if !ENABLE_PLATFORM_MINGW32
570#define vforked (G_misc.vforked ) 761#define vforked (G_misc.vforked )
762#else
763#define vforked 0
764#endif
571#define savestatus (G_misc.savestatus ) 765#define savestatus (G_misc.savestatus )
572#define rootpid (G_misc.rootpid ) 766#define rootpid (G_misc.rootpid )
573#define shlvl (G_misc.shlvl ) 767#define shlvl (G_misc.shlvl )
574#define errlinno (G_misc.errlinno ) 768#define errlinno (G_misc.errlinno )
769#if ENABLE_PLATFORM_MINGW32
770#define loopnest (G_misc.loopnest )
771#endif
575#define minusc (G_misc.minusc ) 772#define minusc (G_misc.minusc )
773#if ENABLE_PLATFORM_MINGW32
774#define dirarg (G_misc.dirarg )
775#define title (G_misc.title )
776#define delayexit (G_misc.delayexit )
777#endif
576#define curdir (G_misc.curdir ) 778#define curdir (G_misc.curdir )
577#define physdir (G_misc.physdir ) 779#define physdir (G_misc.physdir )
578#define arg0 (G_misc.arg0 ) 780#define arg0 (G_misc.arg0 )
@@ -580,6 +782,9 @@ extern struct globals_misc *BB_GLOBAL_CONST ash_ptr_to_globals_misc;
580#define exception_type (G_misc.exception_type ) 782#define exception_type (G_misc.exception_type )
581#define suppress_int (G_misc.suppress_int ) 783#define suppress_int (G_misc.suppress_int )
582#define pending_int (G_misc.pending_int ) 784#define pending_int (G_misc.pending_int )
785#if ENABLE_PLATFORM_MINGW32
786#define waitcmd_int (G_misc.waitcmd_int )
787#endif
583#define gotsigchld (G_misc.gotsigchld ) 788#define gotsigchld (G_misc.gotsigchld )
584#define pending_sig (G_misc.pending_sig ) 789#define pending_sig (G_misc.pending_sig )
585#define nullstr (G_misc.nullstr ) 790#define nullstr (G_misc.nullstr )
@@ -596,6 +801,13 @@ extern struct globals_misc *BB_GLOBAL_CONST ash_ptr_to_globals_misc;
596#define groupinfo (G_misc.groupinfo ) 801#define groupinfo (G_misc.groupinfo )
597#define random_gen (G_misc.random_gen ) 802#define random_gen (G_misc.random_gen )
598#define backgndpid (G_misc.backgndpid ) 803#define backgndpid (G_misc.backgndpid )
804
805#if ENABLE_PLATFORM_MINGW32
806#undef got_sigchld
807#undef pending_sig
808#define pending_sig (0)
809#endif
810
599#define INIT_G_misc() do { \ 811#define INIT_G_misc() do { \
600 XZALLOC_CONST_PTR(&ash_ptr_to_globals_misc, sizeof(G_misc)); \ 812 XZALLOC_CONST_PTR(&ash_ptr_to_globals_misc, sizeof(G_misc)); \
601 savestatus = -1; \ 813 savestatus = -1; \
@@ -614,6 +826,9 @@ static void trace_printf(const char *fmt, ...);
614static void trace_vprintf(const char *fmt, va_list va); 826static void trace_vprintf(const char *fmt, va_list va);
615# define TRACE(param) trace_printf param 827# define TRACE(param) trace_printf param
616# define TRACEV(param) trace_vprintf param 828# define TRACEV(param) trace_vprintf param
829# if ENABLE_PLATFORM_MINGW32 && defined(close)
830# undef close
831# endif
617# define close(fd) do { \ 832# define close(fd) do { \
618 int dfd = (fd); \ 833 int dfd = (fd); \
619 if (close(dfd) < 0) \ 834 if (close(dfd) < 0) \
@@ -647,6 +862,7 @@ var_end(const char *var)
647 return var; 862 return var;
648} 863}
649 864
865#if !ENABLE_PLATFORM_MINGW32
650/* Our signal logic never blocks individual signals 866/* Our signal logic never blocks individual signals
651 * using signal mask - only by setting SIG_IGN handler. 867 * using signal mask - only by setting SIG_IGN handler.
652 * Therefore just unmasking all of them instead of "restore old mask" 868 * Therefore just unmasking all of them instead of "restore old mask"
@@ -658,6 +874,7 @@ sigclearmask(void)
658{ 874{
659 sigprocmask_allsigs(SIG_UNBLOCK); 875 sigprocmask_allsigs(SIG_UNBLOCK);
660} 876}
877#endif
661 878
662/* Reset handler when entering a subshell */ 879/* Reset handler when entering a subshell */
663static void 880static void
@@ -730,16 +947,28 @@ static void
730raise_interrupt(void) 947raise_interrupt(void)
731{ 948{
732 pending_int = 0; 949 pending_int = 0;
950#if !ENABLE_PLATFORM_MINGW32
733 /* Signal is not automatically unmasked after it is raised, 951 /* Signal is not automatically unmasked after it is raised,
734 * do it ourself - unmask all signals */ 952 * do it ourself - unmask all signals */
735 sigprocmask_allsigs(SIG_UNBLOCK); 953 sigprocmask_allsigs(SIG_UNBLOCK);
954#endif
736 /* pending_sig = 0; - now done in signal_handler() */ 955 /* pending_sig = 0; - now done in signal_handler() */
737 956
738 if (!(rootshell && iflag)) { 957 if (!(rootshell && iflag)) {
958#if !ENABLE_PLATFORM_MINGW32
739 /* Kill ourself with SIGINT */ 959 /* Kill ourself with SIGINT */
740 signal(SIGINT, SIG_DFL); 960 signal(SIGINT, SIG_DFL);
741 raise(SIGINT); 961 raise(SIGINT);
962#else
963 fflush_all();
964 kill(-getpid(), SIGINT);
965 _exit(SIGINT << 24);
966#endif
742 } 967 }
968#if ENABLE_PLATFORM_MINGW32
969 if (iflag)
970 write(STDOUT_FILENO, "^C", 2);
971#endif
743 /* bash: ^C even on empty command line sets $? */ 972 /* bash: ^C even on empty command line sets $? */
744 exitstatus = SIGINT + 128; 973 exitstatus = SIGINT + 128;
745 raise_exception(EXINT); 974 raise_exception(EXINT);
@@ -2094,6 +2323,18 @@ maybe_single_quote(const char *s)
2094 return single_quote(s); 2323 return single_quote(s);
2095} 2324}
2096 2325
2326#if ENABLE_PLATFORM_MINGW32
2327/* Copy path to a string on the stack long enough to allow a file extension
2328 * to be added. */
2329static char *
2330stack_add_ext_space(const char *path)
2331{
2332 char *p = growstackto(strlen(path) + 5);
2333 strcpy(p, path);
2334 return p;
2335}
2336#endif
2337
2097 2338
2098/* ============ nextopt */ 2339/* ============ nextopt */
2099 2340
@@ -2216,6 +2457,9 @@ struct localvar {
2216#else 2457#else
2217# define VDYNAMIC 0 2458# define VDYNAMIC 0
2218#endif 2459#endif
2460#if ENABLE_PLATFORM_MINGW32
2461# define VIMPORT 0x400 /* variable was imported from environment */
2462#endif
2219 2463
2220/* Need to be before varinit_data[] */ 2464/* Need to be before varinit_data[] */
2221#if ENABLE_LOCALE_SUPPORT 2465#if ENABLE_LOCALE_SUPPORT
@@ -2244,6 +2488,24 @@ static void change_seconds(const char *) FAST_FUNC;
2244static void change_realtime(const char *) FAST_FUNC; 2488static void change_realtime(const char *) FAST_FUNC;
2245#endif 2489#endif
2246 2490
2491#if ENABLE_PLATFORM_MINGW32
2492static void FAST_FUNC
2493change_terminal_mode(const char *newval UNUSED_PARAM)
2494{
2495 terminal_mode(TRUE);
2496}
2497
2498static void clearcmdentry(void);
2499static void FAST_FUNC
2500change_override_applets(const char *newval UNUSED_PARAM)
2501{
2502 clearcmdentry();
2503}
2504
2505# define LINENO_INDEX (5 + 2 * ENABLE_ASH_MAIL + ENABLE_ASH_GETOPTS)
2506# define FUNCNAME_INDEX (LINENO_INDEX + 1)
2507#endif
2508
2247static const struct { 2509static const struct {
2248 int flags; 2510 int flags;
2249 const char *var_text; 2511 const char *var_text;
@@ -2281,6 +2543,12 @@ static const struct {
2281#if ENABLE_FEATURE_EDITING_SAVEHISTORY 2543#if ENABLE_FEATURE_EDITING_SAVEHISTORY
2282 { VSTRFIXED|VTEXTFIXED|VUNSET, "HISTFILE" , NULL }, 2544 { VSTRFIXED|VTEXTFIXED|VUNSET, "HISTFILE" , NULL },
2283#endif 2545#endif
2546#if ENABLE_PLATFORM_MINGW32
2547 { VSTRFIXED|VTEXTFIXED|VUNSET, BB_SKIP_ANSI_EMULATION, change_terminal_mode },
2548 { VSTRFIXED|VTEXTFIXED|VUNSET, BB_TERMINAL_MODE, change_terminal_mode },
2549 { VSTRFIXED|VTEXTFIXED|VUNSET, BB_OVERRIDE_APPLETS, change_override_applets },
2550 { VSTRFIXED|VTEXTFIXED|VUNSET, BB_CRITICAL_ERROR_DIALOGS, change_critical_error_dialogs },
2551#endif
2284}; 2552};
2285 2553
2286struct redirtab; 2554struct redirtab;
@@ -2504,6 +2772,65 @@ bltinlookup(const char *name)
2504 return lookupvar(name); 2772 return lookupvar(name);
2505} 2773}
2506 2774
2775#if ENABLE_PLATFORM_MINGW32
2776static char *
2777fix_pathvar(const char *path, int len)
2778{
2779 char *newpath = xstrdup(path);
2780 char *p;
2781 int modified = FALSE;
2782
2783 p = newpath + len;
2784 while (*p) {
2785 if (*p != ':' && *p != ';') {
2786 /* skip drive */
2787 if (isalpha(*p) && p[1] == ':')
2788 p += 2;
2789 /* skip through path component */
2790 for (; *p != '\0' && *p != ':' && *p != ';'; ++p)
2791 continue;
2792 }
2793 /* *p is ':', ';' or '\0' here */
2794 if (*p == ':') {
2795 *p++ = ';';
2796 modified = TRUE;
2797 }
2798 else if (*p == ';') {
2799 ++p;
2800 }
2801 }
2802
2803 if (!modified) {
2804 free(newpath);
2805 newpath = NULL;
2806 }
2807 return newpath;
2808}
2809
2810#define BB_VAR_EXACT 1 /* exact match for name */
2811#define BB_VAR_ASSIGN -1 /* matches name followed by '=' */
2812
2813/* Match variables that should be placed in the environment immediately
2814 * they're exported and removed immediately they're no longer exported */
2815static int
2816is_bb_var(const char *s)
2817{
2818 const char *p;
2819 int len;
2820
2821 for (p = bbvar; *p; p += len + 1) {
2822 len = strlen(p);
2823 if (strncmp(s, p, len) == 0) {
2824 if (s[len] == '\0')
2825 return BB_VAR_EXACT;
2826 else if (s[len] == '=')
2827 return BB_VAR_ASSIGN;
2828 }
2829 }
2830 return FALSE;
2831}
2832#endif
2833
2507/* 2834/*
2508 * Same as setvar except that the variable and value are passed in 2835 * Same as setvar except that the variable and value are passed in
2509 * the first argument as name=value. Since the first argument will 2836 * the first argument as name=value. Since the first argument will
@@ -2515,6 +2842,26 @@ static struct var *
2515setvareq(char *s, int flags) 2842setvareq(char *s, int flags)
2516{ 2843{
2517 struct var *vp, **vpp; 2844 struct var *vp, **vpp;
2845#if ENABLE_PLATFORM_MINGW32
2846 const char *paths = "PATH=\0""CDPATH=\0""MANPATH=\0";
2847 const char *p;
2848 int len;
2849
2850 for (p = paths; *p; p += len + 1) {
2851 len = strlen(p);
2852 if (strncmp(s, p, len) == 0) {
2853 char *newpath = fix_pathvar(s, len);
2854 if (newpath) {
2855 if ((flags & (VTEXTFIXED|VSTACK|VNOSAVE)) == VNOSAVE)
2856 free(s);
2857 flags |= VNOSAVE;
2858 flags &= ~(VTEXTFIXED|VSTACK);
2859 s = newpath;
2860 }
2861 break;
2862 }
2863 }
2864#endif
2518 2865
2519 flags |= (VEXPORT & (((unsigned) (1 - aflag)) - 1)); 2866 flags |= (VEXPORT & (((unsigned) (1 - aflag)) - 1));
2520 vpp = findvar(s); 2867 vpp = findvar(s);
@@ -2539,6 +2886,11 @@ setvareq(char *s, int flags)
2539 if (!(vp->flags & (VTEXTFIXED|VSTACK))) 2886 if (!(vp->flags & (VTEXTFIXED|VSTACK)))
2540 free((char*)vp->var_text); 2887 free((char*)vp->var_text);
2541 2888
2889#if ENABLE_PLATFORM_MINGW32
2890 if ((flags & VUNSET) && (vp->flags & VEXPORT) &&
2891 is_bb_var(s) == BB_VAR_EXACT)
2892 unsetenv(s);
2893#endif
2542 if (((flags & (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) | (vp->flags & VSTRFIXED)) == VUNSET) { 2894 if (((flags & (VEXPORT|VREADONLY|VSTRFIXED|VUNSET)) | (vp->flags & VSTRFIXED)) == VUNSET) {
2543 *vpp = vp->next; 2895 *vpp = vp->next;
2544 free(vp); 2896 free(vp);
@@ -2568,6 +2920,10 @@ setvareq(char *s, int flags)
2568 s = ckstrdup(s); 2920 s = ckstrdup(s);
2569 vp->var_text = s; 2921 vp->var_text = s;
2570 vp->flags = flags; 2922 vp->flags = flags;
2923#if ENABLE_PLATFORM_MINGW32
2924 if ((flags & VEXPORT) && is_bb_var(s) == BB_VAR_ASSIGN)
2925 putenv(s);
2926#endif
2571 2927
2572 out: 2928 out:
2573 return vp; 2929 return vp;
@@ -2689,6 +3045,65 @@ listvars(int on, int off, struct strlist *lp, char ***end)
2689 return grabstackstr(ep); 3045 return grabstackstr(ep);
2690} 3046}
2691 3047
3048#if ENABLE_PLATFORM_MINGW32
3049/* Adjust directory separator in variables imported from the environment */
3050static void
3051setwinxp(int on)
3052{
3053 static smallint is_winxp = 1;
3054 struct var **vpp;
3055 struct var *vp;
3056
3057 if (on == is_winxp)
3058 return;
3059 is_winxp = on;
3060
3061 for (vpp = vartab; vpp < vartab + VTABSIZE; vpp++) {
3062 for (vp = *vpp; vp; vp = vp->next) {
3063 if ((vp->flags & VIMPORT)) {
3064 char *end = strchr(vp->var_text, '=');
3065 if (!end || is_prefixed_with(vp->var_text, "COMSPEC=") ||
3066 is_prefixed_with(vp->var_text, "SYSTEMROOT="))
3067 continue;
3068 if (!on)
3069 bs_to_slash(end + 1);
3070 else
3071 slash_to_bs(end + 1);
3072 }
3073 }
3074 }
3075}
3076
3077# if ENABLE_ASH_NOCONSOLE
3078/*
3079 * Console state is either:
3080 * 0 normal
3081 * 1 iconified/hidden
3082 * 2 unknown
3083 */
3084static int console_state(void)
3085{
3086 DECLARE_PROC_ADDR(BOOL, ShowWindow, HWND, int);
3087
3088 if (INIT_PROC_ADDR(user32.dll, ShowWindow)) {
3089 BOOL visible = IsWindowVisible(GetConsoleWindow());
3090 BOOL iconified = IsIconic(GetConsoleWindow());
3091
3092 return !visible || iconified;
3093 }
3094 return 2;
3095}
3096
3097static void hide_console(int hide)
3098{
3099 // Switch console state if it's known and isn't the required state
3100 if (console_state() == !hide)
3101 ShowWindow(GetConsoleWindow(), hide ?
3102 (noiconify ? SW_HIDE : SW_MINIMIZE) : SW_NORMAL);
3103}
3104# endif
3105#endif
3106
2692 3107
2693/* ============ Path search helper */ 3108/* ============ Path search helper */
2694static const char * 3109static const char *
@@ -2732,7 +3147,7 @@ static const char *pathopt; /* set by padvance */
2732static int 3147static int
2733padvance_magic(const char **path, const char *name, int magic) 3148padvance_magic(const char **path, const char *name, int magic)
2734{ 3149{
2735 const char *term = "%:"; 3150 const char *term = "%"PATH_SEP_STR;
2736 const char *lpathopt; 3151 const char *lpathopt;
2737 const char *p; 3152 const char *p;
2738 char *q; 3153 char *q;
@@ -2749,14 +3164,14 @@ padvance_magic(const char **path, const char *name, int magic)
2749 if (*start == '%' && (p = legal_pathopt(start + 1, term, magic))) { 3164 if (*start == '%' && (p = legal_pathopt(start + 1, term, magic))) {
2750 lpathopt = start + 1; 3165 lpathopt = start + 1;
2751 start = p; 3166 start = p;
2752 term = ":"; 3167 term = PATH_SEP_STR;
2753 } 3168 }
2754 3169
2755 len = strcspn(start, term); 3170 len = strcspn(start, term);
2756 p = start + len; 3171 p = start + len;
2757 3172
2758 if (*p == '%') { 3173 if (*p == '%') {
2759 size_t extra = strchrnul(p, ':') - p; 3174 size_t extra = strchrnul(p, PATH_SEP) - p;
2760 3175
2761 if (legal_pathopt(p + 1, term, magic)) 3176 if (legal_pathopt(p + 1, term, magic))
2762 lpathopt = p + 1; 3177 lpathopt = p + 1;
@@ -2767,14 +3182,18 @@ padvance_magic(const char **path, const char *name, int magic)
2767 } 3182 }
2768 3183
2769 pathopt = lpathopt; 3184 pathopt = lpathopt;
2770 *path = *p == ':' ? p + 1 : NULL; 3185 *path = *p == PATH_SEP ? p + 1 : NULL;
2771 3186
2772 /* "2" is for '/' and '\0' */ 3187 /* "2" is for '/' and '\0' */
2773 qlen = len + strlen(name) + 2; 3188 /* reserve space for suffix on WIN32 */
3189 qlen = len + strlen(name) + 2 IF_PLATFORM_MINGW32(+ 4);
2774 q = growstackto(qlen); 3190 q = growstackto(qlen);
2775 3191
2776 if (len) { 3192 if (len) {
2777 q = mempcpy(q, start, len); 3193 q = mempcpy(q, start, len);
3194#if ENABLE_PLATFORM_MINGW32
3195 if (q[-1] != '/' && q[-1] != '\\')
3196#endif
2778 *q++ = '/'; 3197 *q++ = '/';
2779 } 3198 }
2780 strcpy(q, name); 3199 strcpy(q, name);
@@ -2865,6 +3284,7 @@ setprompt_if(smallint do_set, int whichprompt)
2865 3284
2866#define CD_PHYSICAL 1 3285#define CD_PHYSICAL 1
2867#define CD_PRINT 2 3286#define CD_PRINT 2
3287#define CD_PRINT_ALL 4
2868 3288
2869static int 3289static int
2870cdopt(void) 3290cdopt(void)
@@ -2873,7 +3293,14 @@ cdopt(void)
2873 int i, j; 3293 int i, j;
2874 3294
2875 j = 'L'; 3295 j = 'L';
3296#if ENABLE_PLATFORM_MINGW32
3297 while ((i = nextopt("LPa")) != '\0') {
3298 if (i == 'a')
3299 flags |= CD_PRINT_ALL;
3300 else
3301#else
2876 while ((i = nextopt("LP")) != '\0') { 3302 while ((i = nextopt("LP")) != '\0') {
3303#endif
2877 if (i != j) { 3304 if (i != j) {
2878 flags ^= CD_PHYSICAL; 3305 flags ^= CD_PHYSICAL;
2879 j = i; 3306 j = i;
@@ -2890,6 +3317,130 @@ cdopt(void)
2890static const char * 3317static const char *
2891updatepwd(const char *dir) 3318updatepwd(const char *dir)
2892{ 3319{
3320#if ENABLE_PLATFORM_MINGW32
3321 /*
3322 * Due to Windows drive notion, getting pwd is a completely
3323 * different thing. Handle it in a separate routine
3324 */
3325
3326 char *new;
3327 char *p;
3328 char *cdcomppath;
3329 const char *lim;
3330 int len;
3331 char buffer[PATH_MAX];
3332 /*
3333 * There are five cases that make some kind of sense
3334 *
3335 * Absolute paths:
3336 * c:/path
3337 * //host/share
3338 *
3339 * Relative to current working directory of other drive:
3340 * c:path
3341 *
3342 * Relative to current root (drive/share):
3343 * /path
3344 *
3345 * Relative to current working directory of current root (drive/share):
3346 * path
3347 */
3348 enum {ABS_DRIVE, ABS_SHARE, REL_OTHER, REL_ROOT, REL_CWD} target;
3349
3350 /* skip multiple leading separators unless dir is a UNC path */
3351 if (is_dir_sep(*dir) && unc_root_len(dir) == 0) {
3352 while (is_dir_sep(dir[1]))
3353 ++dir;
3354 }
3355
3356 len = strlen(dir);
3357 if (len >= 2 && has_dos_drive_prefix(dir))
3358 target = len >= 3 && is_dir_sep(dir[2]) ? ABS_DRIVE : REL_OTHER;
3359 else if (unc_root_len(dir) != 0)
3360 target = ABS_SHARE;
3361 else if (is_dir_sep(*dir))
3362 target = REL_ROOT;
3363 else
3364 target = REL_CWD;
3365
3366 cdcomppath = sstrdup(dir);
3367 STARTSTACKSTR(new);
3368
3369 switch (target) {
3370 case REL_OTHER:
3371 /* c:path */
3372 if (get_drive_cwd(dir, buffer, PATH_MAX) == NULL)
3373 return 0;
3374 new = stack_putstr(buffer, new);
3375 len = 2;
3376 cdcomppath += len;
3377 dir += len;
3378 break;
3379 case REL_CWD:
3380 case REL_ROOT:
3381 /* path or /path */
3382 len = root_len(curdir);
3383 if (len == 0)
3384 return 0;
3385 new = target == REL_CWD ? stack_putstr(curdir, new) :
3386 stnputs(curdir, len, new);
3387 break;
3388 default:
3389 /* //host/share or c:/path */
3390 len = root_len(dir);
3391 if (len == 0)
3392 return 0;
3393 new = stnputs(dir, len, new);
3394 cdcomppath += len;
3395 dir += len;
3396 break;
3397 }
3398
3399 new = makestrspace(strlen(dir) + 2, new);
3400 lim = (char *)stackblock() + len + 1;
3401
3402 if (!is_dir_sep(*dir)) {
3403 if (!is_dir_sep(new[-1]))
3404 USTPUTC('/', new);
3405 if (new > lim && is_dir_sep(*lim))
3406 lim++;
3407 } else {
3408 USTPUTC('/', new);
3409 cdcomppath++;
3410 if (is_dir_sep(dir[1]) && !is_dir_sep(dir[2])) {
3411 USTPUTC('/', new);
3412 cdcomppath++;
3413 lim++;
3414 }
3415 }
3416 p = strtok(cdcomppath, "/\\");
3417 while (p) {
3418 switch (*p) {
3419 case '.':
3420 if (p[1] == '.' && p[2] == '\0') {
3421 while (new > lim) {
3422 STUNPUTC(new);
3423 if (is_dir_sep(new[-1]))
3424 break;
3425 }
3426 break;
3427 }
3428 if (p[1] == '\0')
3429 break;
3430 /* fall through */
3431 default:
3432 new = stack_putstr(p, new);
3433 USTPUTC('/', new);
3434 }
3435 p = strtok(NULL, "/\\");
3436 }
3437 if (new > lim)
3438 STUNPUTC(new);
3439 *new = 0;
3440 strip_dot_space((char *)stackblock());
3441 fix_path_case((char *)stackblock());
3442 return bs_to_slash((char *)stackblock());
3443#else
2893 char *new; 3444 char *new;
2894 char *p; 3445 char *p;
2895 char *cdcomppath; 3446 char *cdcomppath;
@@ -2943,6 +3494,7 @@ updatepwd(const char *dir)
2943 STUNPUTC(new); 3494 STUNPUTC(new);
2944 *new = 0; 3495 *new = 0;
2945 return stackblock(); 3496 return stackblock();
3497#endif
2946} 3498}
2947 3499
2948/* 3500/*
@@ -3038,7 +3590,7 @@ cdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
3038 } 3590 }
3039 if (!dest) 3591 if (!dest)
3040 dest = nullstr; 3592 dest = nullstr;
3041 if (*dest == '/') 3593 if (!is_relative_path(dest))
3042 goto step6; 3594 goto step6;
3043 if (*dest == '.') { 3595 if (*dest == '.') {
3044 c = dest[1]; 3596 c = dest[1];
@@ -3061,7 +3613,7 @@ cdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
3061 p = stalloc(len); 3613 p = stalloc(len);
3062 3614
3063 if (stat(p, &statb) >= 0 && S_ISDIR(statb.st_mode)) { 3615 if (stat(p, &statb) >= 0 && S_ISDIR(statb.st_mode)) {
3064 if (c && c != ':') 3616 if (c && c != PATH_SEP)
3065 flags |= CD_PRINT; 3617 flags |= CD_PRINT;
3066 docd: 3618 docd:
3067 if (!docd(p, flags)) 3619 if (!docd(p, flags))
@@ -3083,6 +3635,26 @@ cdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
3083 return 0; 3635 return 0;
3084} 3636}
3085 3637
3638#if ENABLE_PLATFORM_MINGW32
3639static void
3640print_all_cwd(void)
3641{
3642 FILE *mnt;
3643 struct mntent *entry;
3644 char buffer[PATH_MAX];
3645
3646 mnt = setmntent(bb_path_mtab_file, "r");
3647 if (mnt) {
3648 while ((entry=getmntent(mnt)) != NULL) {
3649 entry->mnt_dir[2] = '\0';
3650 if (get_drive_cwd(entry->mnt_dir, buffer, PATH_MAX) != NULL)
3651 out1fmt("%s\n", buffer);
3652 }
3653 endmntent(mnt);
3654 }
3655}
3656#endif
3657
3086static int FAST_FUNC 3658static int FAST_FUNC
3087pwdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM) 3659pwdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
3088{ 3660{
@@ -3090,6 +3662,12 @@ pwdcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
3090 const char *dir = curdir; 3662 const char *dir = curdir;
3091 3663
3092 flags = cdopt(); 3664 flags = cdopt();
3665#if ENABLE_PLATFORM_MINGW32
3666 if (flags & CD_PRINT_ALL) {
3667 print_all_cwd();
3668 return 0;
3669 }
3670#endif
3093 if (flags) { 3671 if (flags) {
3094 if (physdir == nullstr) 3672 if (physdir == nullstr)
3095 setpwd(dir, 0); 3673 setpwd(dir, 0);
@@ -3714,7 +4292,12 @@ unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
3714struct procstat { 4292struct procstat {
3715 pid_t ps_pid; /* process id */ 4293 pid_t ps_pid; /* process id */
3716 int ps_status; /* last process status from wait() */ 4294 int ps_status; /* last process status from wait() */
4295#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
3717 char *ps_cmd; /* text of command being run */ 4296 char *ps_cmd; /* text of command being run */
4297#endif
4298#if ENABLE_PLATFORM_MINGW32
4299 HANDLE ps_proc;
4300#endif
3718}; 4301};
3719 4302
3720struct job { 4303struct job {
@@ -3730,8 +4313,10 @@ struct job {
3730#define JOBDONE 2 /* all procs are completed */ 4313#define JOBDONE 2 /* all procs are completed */
3731 unsigned 4314 unsigned
3732 state: 8, 4315 state: 8,
3733#if JOBS 4316#if JOBS || ENABLE_PLATFORM_MINGW32
3734 sigint: 1, /* job was killed by SIGINT */ 4317 sigint: 1, /* job was killed by SIGINT */
4318#endif
4319#if JOBS
3735 jobctl: 1, /* job running under job control */ 4320 jobctl: 1, /* job running under job control */
3736#endif 4321#endif
3737 waited: 1, /* true if this entry has been waited for */ 4322 waited: 1, /* true if this entry has been waited for */
@@ -3740,17 +4325,23 @@ struct job {
3740 struct job *prev_job; /* previous job */ 4325 struct job *prev_job; /* previous job */
3741}; 4326};
3742 4327
4328#if !ENABLE_PLATFORM_MINGW32
3743static int forkshell(struct job *, union node *, int); 4329static int forkshell(struct job *, union node *, int);
4330#endif
3744static int waitforjob(struct job *); 4331static int waitforjob(struct job *);
3745 4332
3746#if !JOBS 4333#if !JOBS && !JOBS_WIN32
3747enum { jobctl = 0 }; 4334enum { jobctl = 0 };
3748#define setjobctl(on) do {} while (0) 4335#define setjobctl(on) do {} while (0)
3749#else 4336#elif JOBS_WIN32
4337static smallint jobctl; //references:8
4338#define setjobctl(on) do { if (rootshell) jobctl = on; } while (0)
4339#else /* JOBS */
3750static smallint jobctl; //references:8 4340static smallint jobctl; //references:8
3751static void setjobctl(int); 4341static void setjobctl(int);
3752#endif 4342#endif
3753 4343
4344#if !ENABLE_PLATFORM_MINGW32
3754/* 4345/*
3755 * Ignore a signal. 4346 * Ignore a signal.
3756 */ 4347 */
@@ -3910,6 +4501,10 @@ setsignal(int signo)
3910 4501
3911 sigaction_set(signo, &act); 4502 sigaction_set(signo, &act);
3912} 4503}
4504#else
4505#define setsignal(s)
4506#define ignoresig(s)
4507#endif
3913 4508
3914/* mode flags for set_curjob */ 4509/* mode flags for set_curjob */
3915#define CUR_DELETE 2 4510#define CUR_DELETE 2
@@ -4043,7 +4638,7 @@ set_curjob(struct job *jp, unsigned mode)
4043 } 4638 }
4044} 4639}
4045 4640
4046#if JOBS || DEBUG 4641#if JOBS || ENABLE_PLATFORM_MINGW32 || DEBUG
4047static int 4642static int
4048jobno(const struct job *jp) 4643jobno(const struct job *jp)
4049{ 4644{
@@ -4061,7 +4656,9 @@ static struct job *
4061getjob(const char *name, int getctl) 4656getjob(const char *name, int getctl)
4062{ 4657{
4063 struct job *jp; 4658 struct job *jp;
4659#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
4064 struct job *found; 4660 struct job *found;
4661#endif
4065 const char *err_msg = "%s: no such job"; 4662 const char *err_msg = "%s: no such job";
4066 unsigned num; 4663 unsigned num;
4067 int c; 4664 int c;
@@ -4106,6 +4703,7 @@ getjob(const char *name, int getctl)
4106 } 4703 }
4107 } 4704 }
4108 4705
4706#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
4109 found = NULL; 4707 found = NULL;
4110 while (jp) { 4708 while (jp) {
4111 if (*p == '?' 4709 if (*p == '?'
@@ -4122,6 +4720,9 @@ getjob(const char *name, int getctl)
4122 if (!found) 4720 if (!found)
4123 goto err; 4721 goto err;
4124 jp = found; 4722 jp = found;
4723#else
4724 goto err;
4725#endif
4125 4726
4126 gotit: 4727 gotit:
4127#if JOBS 4728#if JOBS
@@ -4140,14 +4741,18 @@ getjob(const char *name, int getctl)
4140static void 4741static void
4141freejob(struct job *jp) 4742freejob(struct job *jp)
4142{ 4743{
4744#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
4143 struct procstat *ps; 4745 struct procstat *ps;
4144 int i; 4746 int i;
4747#endif
4145 4748
4146 INTOFF; 4749 INTOFF;
4750#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
4147 for (i = jp->nprocs, ps = jp->ps; --i >= 0; ps++) { 4751 for (i = jp->nprocs, ps = jp->ps; --i >= 0; ps++) {
4148 if (ps->ps_cmd != nullstr) 4752 if (ps->ps_cmd != nullstr)
4149 free(ps->ps_cmd); 4753 free(ps->ps_cmd);
4150 } 4754 }
4755#endif
4151 if (jp->ps != &jp->ps0) 4756 if (jp->ps != &jp->ps0)
4152 free(jp->ps); 4757 free(jp->ps);
4153 jp->used = 0; 4758 jp->used = 0;
@@ -4255,7 +4860,9 @@ setjobctl(int on)
4255 ttyfd = fd; 4860 ttyfd = fd;
4256 jobctl = on; 4861 jobctl = on;
4257} 4862}
4863#endif
4258 4864
4865#if JOBS || JOBS_WIN32
4259static int FAST_FUNC 4866static int FAST_FUNC
4260killcmd(int argc, char **argv) 4867killcmd(int argc, char **argv)
4261{ 4868{
@@ -4285,8 +4892,10 @@ killcmd(int argc, char **argv)
4285 * sh -c 'true|sleep 1 & sleep 2; kill %1' 4892 * sh -c 'true|sleep 1 & sleep 2; kill %1'
4286 */ 4893 */
4287 n = jp->nprocs; /* can't be 0 (I hope) */ 4894 n = jp->nprocs; /* can't be 0 (I hope) */
4895#if !ENABLE_PLATFORM_MINGW32
4288 if (jp->jobctl) 4896 if (jp->jobctl)
4289 n = 1; 4897 n = 1;
4898#endif
4290 dst = alloca(n * sizeof(int)*4); 4899 dst = alloca(n * sizeof(int)*4);
4291 argv[i] = dst; 4900 argv[i] = dst;
4292 for (j = 0; j < n; j++) { 4901 for (j = 0; j < n; j++) {
@@ -4301,7 +4910,11 @@ killcmd(int argc, char **argv)
4301 * leading space. Needed to not confuse 4910 * leading space. Needed to not confuse
4302 * negative pids with "kill -SIGNAL_NO" syntax 4911 * negative pids with "kill -SIGNAL_NO" syntax
4303 */ 4912 */
4913#if !ENABLE_PLATFORM_MINGW32
4304 dst += sprintf(dst, jp->jobctl ? " -%u" : " %u", (int)ps->ps_pid); 4914 dst += sprintf(dst, jp->jobctl ? " -%u" : " %u", (int)ps->ps_pid);
4915#else
4916 dst += sprintf(dst, " -%u", (int)ps->ps_pid);
4917#endif
4305 } 4918 }
4306 *dst = '\0'; 4919 *dst = '\0';
4307 } 4920 }
@@ -4309,7 +4922,9 @@ killcmd(int argc, char **argv)
4309 } 4922 }
4310 return kill_main(argc, argv); 4923 return kill_main(argc, argv);
4311} 4924}
4925#endif
4312 4926
4927#if JOBS
4313static void 4928static void
4314showpipe(struct job *jp /*, FILE *out*/) 4929showpipe(struct job *jp /*, FILE *out*/)
4315{ 4930{
@@ -4414,6 +5029,69 @@ sprint_status48(char *os, int status, int sigonly)
4414 return s - os; 5029 return s - os;
4415} 5030}
4416 5031
5032#if ENABLE_PLATFORM_MINGW32
5033static BOOL WINAPI ctrl_handler(DWORD dwCtrlType)
5034{
5035 if (dwCtrlType == CTRL_C_EVENT || dwCtrlType == CTRL_BREAK_EVENT) {
5036# if ENABLE_FEATURE_EDITING
5037 bb_got_signal = SIGINT; /* for read_line_input: "we got a signal" */
5038# endif
5039 waitcmd_int = -waitcmd_int;
5040 if (!trap[SIGINT]) {
5041 if (!suppress_int && !(rootshell && iflag))
5042 raise_interrupt();
5043 pending_int = 1;
5044 }
5045 return TRUE;
5046 }
5047 return FALSE;
5048}
5049
5050/*
5051 * Windows does not know about parent-child relationship
5052 * They don't support waitpid(-1)
5053 */
5054static pid_t
5055waitpid_child(int *status, DWORD blocking)
5056{
5057 struct job *jb;
5058 int pid_nr = 0;
5059 static HANDLE *proclist = NULL;
5060 static int pid_max = 0;
5061 pid_t pid = -1;
5062 DWORD win_status, idx;
5063 int i;
5064
5065 for (jb = curjob; jb; jb = jb->prev_job) {
5066 if (jb->state != JOBDONE) {
5067 if (pid_nr + jb->nprocs > pid_max) {
5068 pid_max = pid_nr + jb->nprocs;
5069 proclist = ckrealloc(proclist, sizeof(*proclist) * pid_max);
5070 }
5071
5072 for (i = 0; i < jb->nprocs; ++i) {
5073 if (jb->ps[i].ps_proc) {
5074 proclist[pid_nr++] = jb->ps[i].ps_proc;
5075 }
5076 }
5077 }
5078 }
5079
5080 if (pid_nr) {
5081 do {
5082 idx = WaitForMultipleObjects(pid_nr, proclist, FALSE, blocking);
5083 if (idx < pid_nr) {
5084 GetExitCodeProcess(proclist[idx], &win_status);
5085 *status = exit_code_to_wait_status(win_status);
5086 pid = GetProcessId(proclist[idx]);
5087 break;
5088 }
5089 } while (blocking && !pending_int && waitcmd_int != 1);
5090 }
5091 return pid;
5092}
5093#endif
5094
4417/* Inside dowait(): */ 5095/* Inside dowait(): */
4418#define DOWAIT_NONBLOCK 0 /* waitpid() will use WNOHANG and won't wait for signals */ 5096#define DOWAIT_NONBLOCK 0 /* waitpid() will use WNOHANG and won't wait for signals */
4419#define DOWAIT_BLOCK 1 /* waitpid() will NOT use WNOHANG */ 5097#define DOWAIT_BLOCK 1 /* waitpid() will NOT use WNOHANG */
@@ -4425,6 +5103,7 @@ sprint_status48(char *os, int status, int sigonly)
4425static int 5103static int
4426waitproc(int block, int *status) 5104waitproc(int block, int *status)
4427{ 5105{
5106#if !ENABLE_PLATFORM_MINGW32
4428 sigset_t oldmask; 5107 sigset_t oldmask;
4429 int flags = block == DOWAIT_BLOCK ? 0 : WNOHANG; 5108 int flags = block == DOWAIT_BLOCK ? 0 : WNOHANG;
4430 int err; 5109 int err;
@@ -4464,6 +5143,11 @@ waitproc(int block, int *status)
4464 /* If we fall off the loop, err is 0, which means we got a !SIGCHLD signal */ 5143 /* If we fall off the loop, err is 0, which means we got a !SIGCHLD signal */
4465 5144
4466 return err; 5145 return err;
5146#else
5147 // Only DOWAIT_NONBLOCK is non-blocking, other values block.
5148 *status = 0;
5149 return waitpid_child(status, block != DOWAIT_NONBLOCK);
5150#endif
4467} 5151}
4468 5152
4469static int waitone(int block, struct job *job) 5153static int waitone(int block, struct job *job)
@@ -4517,6 +5201,10 @@ static int waitone(int block, struct job *job)
4517 TRACE(("Job %d: changing status of proc %d from 0x%x to 0x%x\n", jobno(jp), pid, sp->ps_status, status)); 5201 TRACE(("Job %d: changing status of proc %d from 0x%x to 0x%x\n", jobno(jp), pid, sp->ps_status, status));
4518 sp->ps_status = status; 5202 sp->ps_status = status;
4519 thisjob = jp; 5203 thisjob = jp;
5204#if ENABLE_PLATFORM_MINGW32
5205 CloseHandle(sp->ps_proc);
5206 sp->ps_proc = NULL;
5207#endif
4520 } 5208 }
4521 if (sp->ps_status == -1) 5209 if (sp->ps_status == -1)
4522 jobstate = JOBRUNNING; 5210 jobstate = JOBRUNNING;
@@ -4577,6 +5265,7 @@ static int waitone(int block, struct job *job)
4577 5265
4578static int dowait(int block, struct job *jp) 5266static int dowait(int block, struct job *jp)
4579{ 5267{
5268#if !ENABLE_PLATFORM_MINGW32
4580 smallint gotchld = *(volatile smallint *)&gotsigchld; 5269 smallint gotchld = *(volatile smallint *)&gotsigchld;
4581 int rpid; 5270 int rpid;
4582 int pid; 5271 int pid;
@@ -4598,9 +5287,17 @@ static int dowait(int block, struct job *jp)
4598 } while (pid >= 0); 5287 } while (pid >= 0);
4599 5288
4600 return rpid; 5289 return rpid;
5290#else
5291 int pid = 1;
5292
5293 while ((jp ? jp->state == JOBRUNNING : pid > 0) && waitcmd_int != 1)
5294 pid = waitone(block, jp);
5295
5296 return pid;
5297#endif
4601} 5298}
4602 5299
4603#if JOBS 5300#if JOBS || JOBS_WIN32
4604static void 5301static void
4605showjob(struct job *jp, int mode) 5302showjob(struct job *jp, int mode)
4606{ 5303{
@@ -4615,7 +5312,7 @@ showjob(struct job *jp, int mode)
4615 5312
4616 if (mode & SHOW_ONLY_PGID) { /* jobs -p */ 5313 if (mode & SHOW_ONLY_PGID) { /* jobs -p */
4617 /* just output process (group) id of pipeline */ 5314 /* just output process (group) id of pipeline */
4618 fprintf(out, "%d\n", ps->ps_pid); 5315 fprintf(out, "%"PID_FMT"d\n", ps->ps_pid);
4619 return; 5316 return;
4620 } 5317 }
4621 5318
@@ -4628,7 +5325,7 @@ showjob(struct job *jp, int mode)
4628 s[col - 3] = '-'; 5325 s[col - 3] = '-';
4629 5326
4630 if (mode & SHOW_PIDS) 5327 if (mode & SHOW_PIDS)
4631 col += fmtstr(s + col, 16, "%d ", ps->ps_pid); 5328 col += fmtstr(s + col, 16, "%"PID_FMT"d ", ps->ps_pid);
4632 5329
4633 psend = ps + jp->nprocs; 5330 psend = ps + jp->nprocs;
4634 5331
@@ -4637,8 +5334,10 @@ showjob(struct job *jp, int mode)
4637 col += sizeof("Running") - 1; 5334 col += sizeof("Running") - 1;
4638 } else { 5335 } else {
4639 int status = psend[-1].ps_status; 5336 int status = psend[-1].ps_status;
5337#if !ENABLE_PLATFORM_MINGW32
4640 if (jp->state == JOBSTOPPED) 5338 if (jp->state == JOBSTOPPED)
4641 status = jp->stopstatus; 5339 status = jp->stopstatus;
5340#endif
4642 col += sprint_status48(s + col, status, 0); 5341 col += sprint_status48(s + col, status, 0);
4643 } 5342 }
4644 /* By now, "[JOBID]* [maybe PID] STATUS" is printed */ 5343 /* By now, "[JOBID]* [maybe PID] STATUS" is printed */
@@ -4657,14 +5356,18 @@ showjob(struct job *jp, int mode)
4657 s[0] = '\0'; 5356 s[0] = '\0';
4658 col = 33; 5357 col = 33;
4659 if (mode & SHOW_PIDS) 5358 if (mode & SHOW_PIDS)
4660 col = fmtstr(s, 48, "\n%*c%d ", indent_col, ' ', ps->ps_pid) - 1; 5359 col = fmtstr(s, 48, "\n%*c%"PID_FMT"d ", indent_col, ' ', ps->ps_pid) - 1;
4661 start: 5360 start:
5361#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
4662 fprintf(out, "%s%*c%s%s", 5362 fprintf(out, "%s%*c%s%s",
4663 s, 5363 s,
4664 33 - col >= 0 ? 33 - col : 0, ' ', 5364 33 - col >= 0 ? 33 - col : 0, ' ',
4665 ps == jp->ps ? "" : "| ", 5365 ps == jp->ps ? "" : "| ",
4666 ps->ps_cmd 5366 ps->ps_cmd
4667 ); 5367 );
5368#else
5369 fprintf(out, "%s", s);
5370#endif
4668 } while (++ps != psend); 5371 } while (++ps != psend);
4669 newline_and_flush(out); 5372 newline_and_flush(out);
4670 5373
@@ -4749,7 +5452,7 @@ getstatus(struct job *job)
4749 { 5452 {
4750 /* XXX: limits number of signals */ 5453 /* XXX: limits number of signals */
4751 retval = WTERMSIG(status); 5454 retval = WTERMSIG(status);
4752#if JOBS 5455#if JOBS || ENABLE_PLATFORM_MINGW32
4753 if (retval == SIGINT) 5456 if (retval == SIGINT)
4754 job->sigint = 1; 5457 job->sigint = 1;
4755#endif 5458#endif
@@ -4800,6 +5503,9 @@ waitcmd(int argc UNUSED_PARAM, char **argv)
4800 * with an exit status greater than 128, immediately after which 5503 * with an exit status greater than 128, immediately after which
4801 * the trap is executed." 5504 * the trap is executed."
4802 */ 5505 */
5506#if ENABLE_PLATFORM_MINGW32
5507 waitcmd_int = -1;
5508#endif
4803#if BASH_WAIT_N 5509#if BASH_WAIT_N
4804 status = dowait(DOWAIT_CHILD_OR_SIG | DOWAIT_JOBSTATUS, NULL); 5510 status = dowait(DOWAIT_CHILD_OR_SIG | DOWAIT_JOBSTATUS, NULL);
4805#else 5511#else
@@ -4809,8 +5515,14 @@ waitcmd(int argc UNUSED_PARAM, char **argv)
4809 * dowait() returns pid > 0. Check this case, 5515 * dowait() returns pid > 0. Check this case,
4810 * not "if (dowait() < 0)"! 5516 * not "if (dowait() < 0)"!
4811 */ 5517 */
5518#if ENABLE_PLATFORM_MINGW32
5519 if (waitcmd_int == 1)
5520 return 128 | SIGINT;
5521 waitcmd_int = 0;
5522#else
4812 if (pending_sig) 5523 if (pending_sig)
4813 goto sigout; 5524 goto sigout;
5525#endif
4814#if BASH_WAIT_N 5526#if BASH_WAIT_N
4815 if (one) { 5527 if (one) {
4816 /* wait -n waits for one _job_, not one _process_. 5528 /* wait -n waits for one _job_, not one _process_.
@@ -4921,7 +5633,7 @@ makejob(int nprocs)
4921 break; 5633 break;
4922 if (jp->state != JOBDONE || !jp->waited) 5634 if (jp->state != JOBDONE || !jp->waited)
4923 continue; 5635 continue;
4924#if JOBS 5636#if JOBS || JOBS_WIN32
4925 if (jobctl) 5637 if (jobctl)
4926 continue; 5638 continue;
4927#endif 5639#endif
@@ -4947,7 +5659,7 @@ makejob(int nprocs)
4947 return jp; 5659 return jp;
4948} 5660}
4949 5661
4950#if JOBS 5662#if JOBS || JOBS_WIN32
4951/* 5663/*
4952 * Return a string identifying a command (to be printed by the 5664 * Return a string identifying a command (to be printed by the
4953 * jobs command). 5665 * jobs command).
@@ -5287,6 +5999,7 @@ clear_traps(void)
5287 INTON; 5999 INTON;
5288} 6000}
5289 6001
6002#if !ENABLE_PLATFORM_MINGW32
5290/* Lives far away from here, needed for forkchild */ 6003/* Lives far away from here, needed for forkchild */
5291static void closescript(void); 6004static void closescript(void);
5292 6005
@@ -5425,14 +6138,22 @@ forkchild(struct job *jp, union node *n, int mode)
5425 for (jp = curjob; jp; jp = jp->prev_job) 6138 for (jp = curjob; jp; jp = jp->prev_job)
5426 freejob(jp); 6139 freejob(jp);
5427} 6140}
6141#endif
5428 6142
5429/* Called after fork(), in parent */ 6143/* Called after fork(), in parent */
5430#if !JOBS 6144#if !JOBS && !JOBS_WIN32
5431#define forkparent(jp, n, mode, pid) forkparent(jp, mode, pid) 6145#define forkparent(jp, n, mode, pid) forkparent(jp, mode, pid)
5432#endif 6146#endif
5433static void 6147static void
6148#if !ENABLE_PLATFORM_MINGW32
5434forkparent(struct job *jp, union node *n, int mode, pid_t pid) 6149forkparent(struct job *jp, union node *n, int mode, pid_t pid)
6150#else
6151forkparent(struct job *jp, union node *n, int mode, HANDLE proc)
6152#endif
5435{ 6153{
6154#if ENABLE_PLATFORM_MINGW32
6155 pid_t pid = GetProcessId(proc);
6156#else
5436 if (pid < 0) { 6157 if (pid < 0) {
5437 TRACE(("Fork failed, errno=%d", errno)); 6158 TRACE(("Fork failed, errno=%d", errno));
5438 if (jp) 6159 if (jp)
@@ -5440,6 +6161,7 @@ forkparent(struct job *jp, union node *n, int mode, pid_t pid)
5440 ash_msg_and_raise_perror("can't fork"); 6161 ash_msg_and_raise_perror("can't fork");
5441 /* NOTREACHED */ 6162 /* NOTREACHED */
5442 } 6163 }
6164#endif
5443 6165
5444 TRACE(("In parent shell: child = %d\n", pid)); 6166 TRACE(("In parent shell: child = %d\n", pid));
5445 if (!jp) /* jp is NULL when called by openhere() for heredoc support */ 6167 if (!jp) /* jp is NULL when called by openhere() for heredoc support */
@@ -5459,19 +6181,29 @@ forkparent(struct job *jp, union node *n, int mode, pid_t pid)
5459 if (mode == FORK_BG) { 6181 if (mode == FORK_BG) {
5460 backgndpid = pid; /* set $! */ 6182 backgndpid = pid; /* set $! */
5461 set_curjob(jp, CUR_RUNNING); 6183 set_curjob(jp, CUR_RUNNING);
6184#if ENABLE_PLATFORM_MINGW32
6185 if (iflag && jp && jp->nprocs == 0)
6186 fprintf(stderr, "[%d] %"PID_FMT"d\n", jobno(jp), pid);
6187#endif
5462 } 6188 }
5463 if (jp) { 6189 if (jp) {
5464 struct procstat *ps = &jp->ps[jp->nprocs++]; 6190 struct procstat *ps = &jp->ps[jp->nprocs++];
5465 ps->ps_pid = pid; 6191 ps->ps_pid = pid;
5466 ps->ps_status = -1; 6192 ps->ps_status = -1;
6193#if ENABLE_PLATFORM_POSIX || JOBS_WIN32
5467 ps->ps_cmd = nullstr; 6194 ps->ps_cmd = nullstr;
5468#if JOBS 6195#endif
6196#if ENABLE_PLATFORM_MINGW32
6197 ps->ps_proc = proc;
6198#endif
6199#if JOBS || JOBS_WIN32
5469 if (jobctl && n) 6200 if (jobctl && n)
5470 ps->ps_cmd = commandtext(n); 6201 ps->ps_cmd = commandtext(n);
5471#endif 6202#endif
5472 } 6203 }
5473} 6204}
5474 6205
6206#if !ENABLE_PLATFORM_MINGW32
5475/* jp and n are NULL when called by openhere() for heredoc support */ 6207/* jp and n are NULL when called by openhere() for heredoc support */
5476static int 6208static int
5477forkshell(struct job *jp, union node *n, int mode) 6209forkshell(struct job *jp, union node *n, int mode)
@@ -5517,6 +6249,7 @@ vforkexec(union node *n, char **argv, const char *path, int idx)
5517 6249
5518 return jp; 6250 return jp;
5519} 6251}
6252#endif
5520 6253
5521/* 6254/*
5522 * Wait for job to finish. 6255 * Wait for job to finish.
@@ -5580,6 +6313,10 @@ waitforjob(struct job *jp)
5580 return exitstatus; 6313 return exitstatus;
5581 6314
5582 st = getstatus(jp); 6315 st = getstatus(jp);
6316#if ENABLE_PLATFORM_MINGW32
6317 if (!jp->sigint && iflag && rootshell)
6318 pending_int = 0;
6319#endif
5583#if JOBS 6320#if JOBS
5584 if (jp->jobctl) { 6321 if (jp->jobctl) {
5585 xtcsetpgrp(ttyfd, rootpid); 6322 xtcsetpgrp(ttyfd, rootpid);
@@ -5605,6 +6342,7 @@ waitforjob(struct job *jp)
5605/* 6342/*
5606 * return 1 if there are stopped jobs, otherwise 0 6343 * return 1 if there are stopped jobs, otherwise 0
5607 */ 6344 */
6345#if !ENABLE_PLATFORM_MINGW32
5608static int 6346static int
5609stoppedjobs(void) 6347stoppedjobs(void)
5610{ 6348{
@@ -5623,6 +6361,17 @@ stoppedjobs(void)
5623 out: 6361 out:
5624 return retval; 6362 return retval;
5625} 6363}
6364#else
6365static int
6366stoppedjobs(void)
6367{
6368 if (iflag && curjob) {
6369 out2str("You have background jobs.\n");
6370 return 1;
6371 }
6372 return 0;
6373}
6374#endif
5626 6375
5627/* 6376/*
5628 * Code for dealing with input/output redirection. 6377 * Code for dealing with input/output redirection.
@@ -5641,11 +6390,21 @@ stoppedjobs(void)
5641static int 6390static int
5642write2pipe(int pip[2], const char *p, size_t len) 6391write2pipe(int pip[2], const char *p, size_t len)
5643{ 6392{
6393 IF_PLATFORM_MINGW32(struct forkshell fs);
6394
5644 if (len <= PIPE_BUF) { 6395 if (len <= PIPE_BUF) {
5645 xwrite(pip[1], p, len); 6396 xwrite(pip[1], p, len);
5646 goto out; 6397 goto out;
5647 } 6398 }
5648 6399
6400#if ENABLE_PLATFORM_MINGW32
6401 memset(&fs, 0, sizeof(fs));
6402 fs.fpid = FS_OPENHERE;
6403 fs.fd[0] = pip[0];
6404 fs.fd[1] = pip[1];
6405 fs.path = p;
6406 spawn_forkshell(&fs, NULL, NULL, FORK_NOJOB);
6407#else
5649 if (forkshell((struct job *)NULL, (union node *)NULL, FORK_NOJOB) == 0) { 6408 if (forkshell((struct job *)NULL, (union node *)NULL, FORK_NOJOB) == 0) {
5650 /* child */ 6409 /* child */
5651 close(pip[0]); 6410 close(pip[0]);
@@ -5657,6 +6416,7 @@ write2pipe(int pip[2], const char *p, size_t len)
5657 xwrite(pip[1], p, len); 6416 xwrite(pip[1], p, len);
5658 _exit_SUCCESS(); 6417 _exit_SUCCESS();
5659 } 6418 }
6419#endif
5660 out: 6420 out:
5661 close(pip[1]); 6421 close(pip[1]);
5662 return pip[0]; 6422 return pip[0];
@@ -5711,6 +6471,10 @@ openredirect(union node *redir)
5711 flags = O_RDONLY; 6471 flags = O_RDONLY;
5712 do_open: 6472 do_open:
5713 f = sh_open(redir->nfile.expfname, flags, 0); 6473 f = sh_open(redir->nfile.expfname, flags, 0);
6474#if ENABLE_PLATFORM_MINGW32
6475 if (redir->nfile.type == NAPPEND)
6476 lseek(f, 0, SEEK_END);
6477#endif
5714 break; 6478 break;
5715 case NFROMSTR: 6479 case NFROMSTR:
5716 f = openherestr(redir->nfile.expfname); 6480 f = openherestr(redir->nfile.expfname);
@@ -5967,6 +6731,12 @@ save_fd_on_redirect(int fd, int avoid_fd, struct redirtab *sq)
5967 if (fd == preverrout_fd) 6731 if (fd == preverrout_fd)
5968 preverrout_fd = new_fd; 6732 preverrout_fd = new_fd;
5969 6733
6734#if ENABLE_PLATFORM_MINGW32 && !defined(_UCRT)
6735 // Workaround for problems with stderr in MSVCRT
6736 if (fd == fileno(stderr))
6737 setvbuf(stderr, NULL, _IONBF, 0);
6738#endif
6739
5970 return 0; /* "we did not close fd" */ 6740 return 0; /* "we did not close fd" */
5971} 6741}
5972 6742
@@ -6320,6 +7090,9 @@ ifsbreakup(char *string, struct arglist *arglist)
6320 const char *ifs, *realifs; 7090 const char *ifs, *realifs;
6321 int ifsspc; 7091 int ifsspc;
6322 int nulonly; 7092 int nulonly;
7093#if ENABLE_PLATFORM_MINGW32
7094 int lshift = 0;
7095#endif
6323 7096
6324 start = string; 7097 start = string;
6325 if (ifslastp != NULL) { 7098 if (ifslastp != NULL) {
@@ -6330,7 +7103,33 @@ ifsbreakup(char *string, struct arglist *arglist)
6330 do { 7103 do {
6331 int afternul; 7104 int afternul;
6332 7105
7106#if ENABLE_PLATFORM_MINGW32
7107 /* Adjust region offsets for left-shifted string. */
7108 ifsp->begoff -= lshift;
7109 ifsp->endoff -= lshift;
7110#endif
6333 p = string + ifsp->begoff; 7111 p = string + ifsp->begoff;
7112#if ENABLE_PLATFORM_MINGW32
7113 if (ifsp->endoff > ifsp->begoff + 1) {
7114 /* Transform CRLF to LF. Skip regions having zero or
7115 * one characters: they can't contain CRLF. If the
7116 * region shrinks shift the rest of the string left. */
7117 int oldlen = ifsp->endoff - ifsp->begoff;
7118 int newlen = remove_cr(p, oldlen);
7119 int delta = oldlen - newlen;
7120
7121 if (delta > 0) {
7122 char *t = string + ifsp->endoff;
7123 char *s = string + ifsp->endoff - delta;
7124
7125 while (*t)
7126 *s++ = *t++;
7127 *s = '\0';
7128 lshift += delta;
7129 ifsp->endoff -= delta;
7130 }
7131 }
7132#endif
6334 afternul = nulonly; 7133 afternul = nulonly;
6335 nulonly = ifsp->nulonly; 7134 nulonly = ifsp->nulonly;
6336 ifs = nulonly ? nullstr : realifs; 7135 ifs = nulonly ? nullstr : realifs;
@@ -6775,6 +7574,7 @@ evalbackcmd(union node *n, struct backcmd *result
6775 const int ip = 0; 7574 const int ip = 0;
6776 const int ic = 1; 7575 const int ic = 1;
6777#endif 7576#endif
7577 IF_PLATFORM_MINGW32(struct forkshell fs);
6778 7578
6779 result->fd = -1; 7579 result->fd = -1;
6780 result->buf = NULL; 7580 result->buf = NULL;
@@ -6788,6 +7588,15 @@ evalbackcmd(union node *n, struct backcmd *result
6788 ash_msg_and_raise_perror("can't create pipe"); 7588 ash_msg_and_raise_perror("can't create pipe");
6789 /* process substitution uses NULL job, like openhere() */ 7589 /* process substitution uses NULL job, like openhere() */
6790 jp = (ctl == CTLBACKQ) ? makejob(1) : NULL; 7590 jp = (ctl == CTLBACKQ) ? makejob(1) : NULL;
7591#if ENABLE_PLATFORM_MINGW32
7592 memset(&fs, 0, sizeof(fs));
7593 fs.fpid = FS_EVALBACKCMD;
7594 fs.n = n;
7595 fs.fd[0] = pip[0];
7596 fs.fd[1] = pip[1];
7597 fs.fd[2] = ctl;
7598 spawn_forkshell(&fs, jp, n, FORK_NOJOB);
7599#else
6791 if (forkshell(jp, n, FORK_NOJOB) == 0) { 7600 if (forkshell(jp, n, FORK_NOJOB) == 0) {
6792 /* child */ 7601 /* child */
6793 reset_exception_handler(); 7602 reset_exception_handler();
@@ -6812,6 +7621,7 @@ evalbackcmd(union node *n, struct backcmd *result
6812 evaltreenr(n, EV_EXIT); 7621 evaltreenr(n, EV_EXIT);
6813 /* NOTREACHED */ 7622 /* NOTREACHED */
6814 } 7623 }
7624#endif
6815 /* parent */ 7625 /* parent */
6816#if BASH_PROCESS_SUBST 7626#if BASH_PROCESS_SUBST
6817 if (ctl != CTLBACKQ) { 7627 if (ctl != CTLBACKQ) {
@@ -6890,8 +7700,14 @@ expbackq(union node *cmd, int flag IF_BASH_PROCESS_SUBST(, int ctl))
6890 7700
6891 /* Eat all trailing newlines */ 7701 /* Eat all trailing newlines */
6892 dest = expdest; 7702 dest = expdest;
6893 for (; dest > ((char *)stackblock() + startloc) && dest[-1] == '\n';) 7703 for (; dest > ((char *)stackblock() + startloc) && dest[-1] == '\n';) {
6894 STUNPUTC(dest); 7704 STUNPUTC(dest);
7705#if ENABLE_PLATFORM_MINGW32
7706 if (dest > ((char *)stackblock() + startloc) && dest[-1] == '\r') {
7707 STUNPUTC(dest);
7708 }
7709#endif
7710 }
6895 expdest = dest; 7711 expdest = dest;
6896 7712
6897 if (!(flag & EXP_QUOTED)) 7713 if (!(flag & EXP_QUOTED))
@@ -8038,6 +8854,26 @@ expandmeta(struct strlist *str /*, int flag*/)
8038#else 8854#else
8039/* ENABLE_ASH_INTERNAL_GLOB: Homegrown globbing code. (dash also has both, uses homegrown one.) */ 8855/* ENABLE_ASH_INTERNAL_GLOB: Homegrown globbing code. (dash also has both, uses homegrown one.) */
8040 8856
8857#if ENABLE_ASH_GLOB_OPTIONS
8858static int FAST_FUNC
8859ash_accept_glob(const char *name)
8860{
8861 struct stat st;
8862
8863 if (nohiddenglob || nohidsysglob) {
8864 if (!lstat(name, &st)) {
8865 if ((st.st_attr & FILE_ATTRIBUTE_HIDDEN)) {
8866 if (nohiddenglob ||
8867 (st.st_attr & FILE_ATTRIBUTE_SYSTEM)) {
8868 return FALSE;
8869 }
8870 }
8871 }
8872 }
8873 return TRUE;
8874}
8875#endif
8876
8041/* 8877/*
8042 * Do metacharacter (i.e. *, ?, [...]) expansion. 8878 * Do metacharacter (i.e. *, ?, [...]) expansion.
8043 */ 8879 */
@@ -8065,6 +8901,10 @@ expmeta(exp_t *exp, char *name, unsigned name_len, unsigned expdir_len)
8065 8901
8066 metaflag = 0; 8902 metaflag = 0;
8067 start = name; 8903 start = name;
8904#if ENABLE_PLATFORM_MINGW32
8905 if (expdir_len == 0 && has_dos_drive_prefix(start) && start[2] != '/')
8906 start += 2;
8907#endif
8068 for (p = name; esc = 0, *p; p += esc + 1) { 8908 for (p = name; esc = 0, *p; p += esc + 1) {
8069 if (*p == '*' || *p == '?') 8909 if (*p == '*' || *p == '?')
8070 metaflag = 1; 8910 metaflag = 1;
@@ -8139,8 +8979,16 @@ expmeta(exp_t *exp, char *name, unsigned name_len, unsigned expdir_len)
8139 while (!pending_int && (dp = readdir(dirp)) != NULL) { 8979 while (!pending_int && (dp = readdir(dirp)) != NULL) {
8140 if (dp->d_name[0] == '.' && !matchdot) 8980 if (dp->d_name[0] == '.' && !matchdot)
8141 continue; 8981 continue;
8982#if ENABLE_ASH_GLOB_OPTIONS
8983# undef pmatch
8984# define pmatch(a, b) !fnmatch((a), (b), nocaseglob ? FNM_CASEFOLD : 0)
8985#endif
8142 if (pmatch(start, dp->d_name)) { 8986 if (pmatch(start, dp->d_name)) {
8143 if (atend) { 8987 if (atend) {
8988#if ENABLE_ASH_GLOB_OPTIONS
8989 if (!ash_accept_glob(dp->d_name))
8990 continue;
8991#endif
8144 strcpy(enddir, dp->d_name); 8992 strcpy(enddir, dp->d_name);
8145 addfname(expdir); 8993 addfname(expdir);
8146 } else { 8994 } else {
@@ -8168,6 +9016,10 @@ expmeta(exp_t *exp, char *name, unsigned name_len, unsigned expdir_len)
8168 endname[-esc - 1] = esc ? '\\' : '/'; 9016 endname[-esc - 1] = esc ? '\\' : '/';
8169#undef expdir 9017#undef expdir
8170#undef expdir_max 9018#undef expdir_max
9019#if ENABLE_ASH_GLOB_OPTIONS
9020# undef pmatch
9021# define pmatch(a, b) !fnmatch((a), (b), 0)
9022#endif
8171} 9023}
8172 9024
8173static struct strlist * 9025static struct strlist *
@@ -8440,14 +9292,40 @@ static int builtinloc = -1; /* index in path of %builtin, or -1 */
8440 9292
8441 9293
8442static void 9294static void
9295#if ENABLE_PLATFORM_MINGW32
9296tryexec(IF_FEATURE_SH_STANDALONE(int applet_no, const char *path, int noexec,)
9297 const char *cmd, char **argv, char **envp)
9298#else
8443tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) const char *cmd, char **argv, char **envp) 9299tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) const char *cmd, char **argv, char **envp)
9300#endif
8444{ 9301{
9302#if ENABLE_PLATFORM_MINGW32 && ENABLE_FEATURE_SH_STANDALONE
9303 interp_t interp;
9304#endif
8445#if ENABLE_FEATURE_SH_STANDALONE 9305#if ENABLE_FEATURE_SH_STANDALONE
8446 if (applet_no >= 0) { 9306 if (applet_no >= 0) {
9307# if ENABLE_PLATFORM_MINGW32
9308 /* Treat all applets as NOEXEC, including the shell itself
9309 * if we were called from forkshell_shellexec(). */
9310 run_noexec:
9311 if (applet_main[applet_no] != ash_main || noexec) {
9312 /* mingw-w64's getopt() uses __argv[0] as the program name */
9313 __argv[0] = (char *)cmd;
9314 /* 'which' wants to know if it was invoked from a standalone
9315 * shell. 'Which' in argv[0] indicates this. */
9316 if (strcmp(argv[0], "which") == 0) {
9317 argv[0] = (char *)"Which";
9318 }
9319# else
8447 if (!vforked && APPLET_IS_NOEXEC(applet_no)) { 9320 if (!vforked && APPLET_IS_NOEXEC(applet_no)) {
9321# endif
9322#if !ENABLE_PLATFORM_MINGW32 || !defined(_UCRT)
9323 /* If building for UCRT move this up into shellexec() to
9324 * work around a bug. */
8448 clearenv(); 9325 clearenv();
8449 while (*envp) 9326 while (*envp)
8450 putenv(*envp++); 9327 putenv(*envp++);
9328#endif
8451 popredir(/*drop:*/ 1); 9329 popredir(/*drop:*/ 1);
8452 run_noexec_applet_and_exit(applet_no, cmd, argv); 9330 run_noexec_applet_and_exit(applet_no, cmd, argv);
8453 } 9331 }
@@ -8458,6 +9336,44 @@ tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) const char *cmd, char **argv, c
8458 } 9336 }
8459#endif 9337#endif
8460 9338
9339#if ENABLE_PLATFORM_MINGW32
9340 /* Workaround for libtool, which assumes the host is an MSYS2
9341 * environment and requires special-case escaping for cmd.exe.
9342 * https://github.com/skeeto/w64devkit/issues/50 */
9343 if (string_array_len(argv) >= 3 &&
9344 strcmp(argv[0], "cmd") == 0 &&
9345 strcmp(argv[1], "//c") == 0 &&
9346 strcmp(argv[2], "echo") == 0) {
9347 argv[1]++; /* drop extra slash */
9348 }
9349
9350 /* cmd was allocated on the stack with room for an extension */
9351 add_win32_extension((char *)cmd);
9352
9353# if ENABLE_FEATURE_SH_STANDALONE
9354 /* If the command is a script with an interpreter which is an
9355 * applet, we can run it as if it were a noexec applet. */
9356 if (parse_interpreter(cmd, &interp)) {
9357 applet_no = find_applet_by_name_for_sh(interp.name, path);
9358 if (applet_no >= 0) {
9359 argv[0] = (char *)cmd;
9360 /* evalcommand()/spawn_forkshell() add two elements before argv */
9361 if (interp.opts) {
9362 argv--;
9363 argv[0] = (char *)interp.opts;
9364 }
9365 argv--;
9366 cmd = argv[0] = (char *)interp.name;
9367 /* Identify the index of the script file in argv */
9368 set_interp(1 + (interp.opts != NULL));
9369 goto run_noexec;
9370 }
9371 }
9372# endif
9373
9374 execve(cmd, argv, envp);
9375 /* skip POSIX-mandated retry on ENOEXEC */
9376#else /* !ENABLE_PLATFORM_MINGW32 */
8461 repeat: 9377 repeat:
8462#ifdef SYSV 9378#ifdef SYSV
8463 do { 9379 do {
@@ -8493,14 +9409,25 @@ tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) const char *cmd, char **argv, c
8493 argv[0] = (char*) "ash"; 9409 argv[0] = (char*) "ash";
8494 goto repeat; 9410 goto repeat;
8495 } 9411 }
9412#endif /* !ENABLE_PLATFORM_MINGW32 */
8496} 9413}
8497 9414
9415#if !ENABLE_PLATFORM_MINGW32 || !ENABLE_FEATURE_SH_STANDALONE
9416# define shellexec(prg, a, pth, i, n) shellexec(prg, a, pth, i)
9417#endif
9418
8498/* 9419/*
8499 * Exec a program. Never returns. If you change this routine, you may 9420 * Exec a program. Never returns. If you change this routine, you may
8500 * have to change the find_command routine as well. 9421 * have to change the find_command routine as well.
8501 * argv[-1] must exist and be writable! See tryexec() for why. 9422 * argv[-1] must exist and be writable! See tryexec() for why.
8502 */ 9423 */
8503static void shellexec(char *prog, char **argv, const char *path, int idx) 9424#if ENABLE_PLATFORM_MINGW32
9425static struct builtincmd *find_builtin(const char *name);
9426static void shellexec(char *prog, char **argv, const char *path, int idx,
9427 int noexec) NORETURN;
9428#endif
9429static void shellexec(char *prog, char **argv, const char *path, int idx,
9430 int noexec)
8504{ 9431{
8505 char *cmdname; 9432 char *cmdname;
8506 int e; 9433 int e;
@@ -8509,12 +9436,30 @@ static void shellexec(char *prog, char **argv, const char *path, int idx)
8509 int applet_no = -1; /* used only by FEATURE_SH_STANDALONE */ 9436 int applet_no = -1; /* used only by FEATURE_SH_STANDALONE */
8510 9437
8511 envp = listvars(VEXPORT, VUNSET, /*strlist:*/ NULL, /*end:*/ NULL); 9438 envp = listvars(VEXPORT, VUNSET, /*strlist:*/ NULL, /*end:*/ NULL);
9439#if ENABLE_FEATURE_SH_STANDALONE && ENABLE_PLATFORM_MINGW32 && defined(_UCRT)
9440 /* Avoid UCRT bug by updating parent's environment and passing a
9441 * NULL environment pointer to execve(). */
9442 clearenv();
9443 while (*envp)
9444 putenv(*envp++);
9445 envp = NULL;
9446#endif
9447#if !ENABLE_PLATFORM_MINGW32
8512 if (strchr(prog, '/') != NULL 9448 if (strchr(prog, '/') != NULL
9449#else
9450 if (has_path(prog)
9451#endif
8513#if ENABLE_FEATURE_SH_STANDALONE 9452#if ENABLE_FEATURE_SH_STANDALONE
8514 || (applet_no = find_applet_by_name(prog)) >= 0 9453 || (applet_no = find_applet_by_name_for_sh(prog, path)) >= 0
8515#endif 9454#endif
8516 ) { 9455 ) {
9456#if ENABLE_PLATFORM_MINGW32
9457 char *progext = stack_add_ext_space(prog);
9458 tryexec(IF_FEATURE_SH_STANDALONE(applet_no, path, noexec,)
9459 progext, argv, envp);
9460#else
8517 tryexec(IF_FEATURE_SH_STANDALONE(applet_no,) prog, argv, envp); 9461 tryexec(IF_FEATURE_SH_STANDALONE(applet_no,) prog, argv, envp);
9462#endif
8518 if (applet_no >= 0) { 9463 if (applet_no >= 0) {
8519 /* We tried execing ourself, but it didn't work. 9464 /* We tried execing ourself, but it didn't work.
8520 * Maybe /proc/self/exe doesn't exist? 9465 * Maybe /proc/self/exe doesn't exist?
@@ -8523,13 +9468,33 @@ static void shellexec(char *prog, char **argv, const char *path, int idx)
8523 goto try_PATH; 9468 goto try_PATH;
8524 } 9469 }
8525 e = errno; 9470 e = errno;
9471#if ENABLE_PLATFORM_MINGW32
9472 if (unix_path(prog)) {
9473 const char *name = bb_basename(prog);
9474# if ENABLE_FEATURE_SH_STANDALONE
9475 if ((applet_no = find_applet_by_name_for_sh(name, path)) >= 0) {
9476 tryexec(applet_no, path, noexec, name, argv, envp);
9477 e = errno;
9478 }
9479# endif
9480 if (!find_builtin(name)) {
9481 argv[0] = (char *)name;
9482 goto try_PATH;
9483 }
9484 }
9485#endif
8526 } else { 9486 } else {
8527 try_PATH: 9487 try_PATH:
8528 e = ENOENT; 9488 e = ENOENT;
8529 while (padvance(&path, argv[0]) >= 0) { 9489 while (padvance(&path, argv[0]) >= 0) {
8530 cmdname = stackblock(); 9490 cmdname = stackblock();
8531 if (--idx < 0 && pathopt == NULL) { 9491 if (--idx < 0 && pathopt == NULL) {
9492#if ENABLE_PLATFORM_MINGW32
9493 tryexec(IF_FEATURE_SH_STANDALONE(-1, path, noexec,)
9494 cmdname, argv, envp);
9495#else
8532 tryexec(IF_FEATURE_SH_STANDALONE(-1,) cmdname, argv, envp); 9496 tryexec(IF_FEATURE_SH_STANDALONE(-1,) cmdname, argv, envp);
9497#endif
8533 if (errno != ENOENT && errno != ENOTDIR) 9498 if (errno != ENOENT && errno != ENOTDIR)
8534 e = errno; 9499 e = errno;
8535 } 9500 }
@@ -8568,6 +9533,9 @@ printentry(struct tblentry *cmdp)
8568 padvance(&path, cmdp->cmdname); 9533 padvance(&path, cmdp->cmdname);
8569 } while (--idx >= 0); 9534 } while (--idx >= 0);
8570 name = stackblock(); 9535 name = stackblock();
9536#if ENABLE_PLATFORM_MINGW32
9537 add_win32_extension(name);
9538#endif
8571 out1fmt("%s%s\n", name, (cmdp->rehash ? "*" : nullstr)); 9539 out1fmt("%s%s\n", name, (cmdp->rehash ? "*" : nullstr));
8572} 9540}
8573 9541
@@ -8768,7 +9736,7 @@ changepath(const char *newval)
8768 bltin = idx; 9736 bltin = idx;
8769 break; 9737 break;
8770 } 9738 }
8771 new = strchr(new, ':'); 9739 new = strchr(new, PATH_SEP);
8772 if (!new) 9740 if (!new)
8773 break; 9741 break;
8774 idx++; 9742 idx++;
@@ -8945,14 +9913,37 @@ describe_command(char *command, const char *path, int describe_command_verbose)
8945 case CMDNORMAL: { 9913 case CMDNORMAL: {
8946 int j = entry.u.index; 9914 int j = entry.u.index;
8947 char *p; 9915 char *p;
9916#if ENABLE_PLATFORM_MINGW32 && ENABLE_FEATURE_SH_STANDALONE
9917 if (j < -1) {
9918 p = (char *)bb_basename(command);
9919 if (describe_command_verbose) {
9920 out1fmt(" is a builtin applet");
9921 } else {
9922 out1str(applet_to_exe(p));
9923 }
9924 break;
9925 }
9926#endif
8948 if (j < 0) { 9927 if (j < 0) {
9928#if ENABLE_PLATFORM_MINGW32
9929 p = stack_add_ext_space(command);
9930#else
8949 p = command; 9931 p = command;
9932#endif
8950 } else { 9933 } else {
9934#if ENABLE_PLATFORM_MINGW32
9935 if (unix_path(command))
9936 command = (char *)bb_basename(command);
9937#endif
8951 do { 9938 do {
8952 padvance(&path, command); 9939 padvance(&path, command);
8953 } while (--j >= 0); 9940 } while (--j >= 0);
8954 p = stackblock(); 9941 p = stackblock();
8955 } 9942 }
9943#if ENABLE_PLATFORM_MINGW32
9944 add_win32_extension(p);
9945 bs_to_slash(p);
9946#endif
8956 if (describe_command_verbose) { 9947 if (describe_command_verbose) {
8957 out1fmt(" is %s", p); 9948 out1fmt(" is %s", p);
8958 } else { 9949 } else {
@@ -9107,6 +10098,15 @@ commandcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
9107/*static int funcstringsize; // size of strings in node */ 10098/*static int funcstringsize; // size of strings in node */
9108static void *funcblock; /* block to allocate function from */ 10099static void *funcblock; /* block to allocate function from */
9109static char *funcstring_end; /* end of block to allocate strings from */ 10100static char *funcstring_end; /* end of block to allocate strings from */
10101#if ENABLE_PLATFORM_MINGW32
10102static int fs_size;
10103static void *fs_start;
10104# if FORKSHELL_DEBUG
10105static void *fs_funcstring;
10106static const char **annot;
10107static char *annot_free;
10108# endif
10109#endif
9110 10110
9111static const uint8_t nodesize[N_NUMBER] ALIGN1 = { 10111static const uint8_t nodesize[N_NUMBER] ALIGN1 = {
9112 [NCMD ] = SHELL_ALIGN(sizeof(struct ncmd)), 10112 [NCMD ] = SHELL_ALIGN(sizeof(struct ncmd)),
@@ -9240,14 +10240,79 @@ calcsize(int funcblocksize, union node *n)
9240} 10240}
9241 10241
9242static char * 10242static char *
9243nodeckstrdup(char *s) 10243nodeckstrdup(const char *s)
9244{ 10244{
10245#if ENABLE_PLATFORM_MINGW32
10246 if(!s)
10247 return NULL;
10248#endif
9245 funcstring_end -= SHELL_ALIGN(strlen(s) + 1); 10249 funcstring_end -= SHELL_ALIGN(strlen(s) + 1);
9246 return strcpy(funcstring_end, s); 10250 return strcpy(funcstring_end, s);
9247} 10251}
9248 10252
9249static union node *copynode(union node *); 10253static union node *copynode(union node *);
9250 10254
10255#if ENABLE_PLATFORM_MINGW32
10256# if FORKSHELL_DEBUG
10257# define MARK_PTR(dst,note,flag) forkshell_mark_ptr((void *)&dst, note, flag)
10258# else
10259# define MARK_PTR(dst,note,flag) forkshell_mark_ptr((void *)&dst)
10260# endif
10261
10262#define NO_FREE 0
10263#define FREE 1
10264
10265#if FORKSHELL_DEBUG
10266static void forkshell_mark_ptr(void *dst, const char *note, int flag)
10267#else
10268static void forkshell_mark_ptr(void *dst)
10269#endif
10270{
10271 char *lrelocate = (char *)fs_start + fs_size;
10272 int index = ((char *)dst - (char *)fs_start)/sizeof(char *);
10273
10274 lrelocate[index/8] |= 1 << (index % 8);
10275
10276#if FORKSHELL_DEBUG
10277 if (dst < fs_start || dst >= fs_funcstring) {
10278 fprintf(stderr, "dst (%p) out of range (%p %p)\n",
10279 dst, fs_start, fs_funcstring);
10280 }
10281 if (annot) {
10282 if (annot[index]) {
10283 fprintf(stderr, "duplicate annotation: %s %s\n",
10284 annot[index], note);
10285 }
10286 annot[index] = note;
10287 annot_free[index] = flag;
10288 }
10289#endif
10290}
10291
10292# define SAVE_PTR(dst,note,flag) { \
10293 if (fs_size) { \
10294 MARK_PTR(dst,note,flag); \
10295 } \
10296}
10297# define SAVE_PTR2(dst1,note1,flag1,dst2,note2,flag2) { \
10298 if (fs_size) { \
10299 MARK_PTR(dst1,note1,flag1); \
10300 MARK_PTR(dst2,note2,flag2); \
10301 } \
10302}
10303# define SAVE_PTR3(dst1,note1,flag1,dst2,note2,flag2,dst3,note3,flag3) { \
10304 if (fs_size) { \
10305 MARK_PTR(dst1,note1,flag1); \
10306 MARK_PTR(dst2,note2,flag2); \
10307 MARK_PTR(dst3,note3,flag3); \
10308 } \
10309}
10310#else
10311# define SAVE_PTR(dst,note,flag)
10312# define SAVE_PTR2(dst1,note1,flag1,dst2,note2,flag2)
10313# define SAVE_PTR3(dst1,note1,flag1,dst2,note2,flag2,dst3,note3,flag3)
10314#endif
10315
9251static struct nodelist * 10316static struct nodelist *
9252copynodelist(struct nodelist *lp) 10317copynodelist(struct nodelist *lp)
9253{ 10318{
@@ -9259,6 +10324,8 @@ copynodelist(struct nodelist *lp)
9259 *lpp = funcblock; 10324 *lpp = funcblock;
9260 funcblock = (char *) funcblock + SHELL_ALIGN(sizeof(struct nodelist)); 10325 funcblock = (char *) funcblock + SHELL_ALIGN(sizeof(struct nodelist));
9261 (*lpp)->n = copynode(lp->n); 10326 (*lpp)->n = copynode(lp->n);
10327 SAVE_PTR2((*lpp)->n, "(*lpp)->next", NO_FREE,
10328 (*lpp)->next, "(*lpp)->next", NO_FREE);
9262 lp = lp->next; 10329 lp = lp->next;
9263 lpp = &(*lpp)->next; 10330 lpp = &(*lpp)->next;
9264 } 10331 }
@@ -9282,10 +10349,14 @@ copynode(union node *n)
9282 new->ncmd.args = copynode(n->ncmd.args); 10349 new->ncmd.args = copynode(n->ncmd.args);
9283 new->ncmd.assign = copynode(n->ncmd.assign); 10350 new->ncmd.assign = copynode(n->ncmd.assign);
9284 new->ncmd.linno = n->ncmd.linno; 10351 new->ncmd.linno = n->ncmd.linno;
10352 SAVE_PTR3(new->ncmd.redirect, "ncmd.redirect", NO_FREE,
10353 new->ncmd.args, "ncmd.args", NO_FREE,
10354 new->ncmd.assign, "ncmd.assign", NO_FREE);
9285 break; 10355 break;
9286 case NPIPE: 10356 case NPIPE:
9287 new->npipe.cmdlist = copynodelist(n->npipe.cmdlist); 10357 new->npipe.cmdlist = copynodelist(n->npipe.cmdlist);
9288 new->npipe.pipe_backgnd = n->npipe.pipe_backgnd; 10358 new->npipe.pipe_backgnd = n->npipe.pipe_backgnd;
10359 SAVE_PTR(new->npipe.cmdlist, "npipe.cmdlist", NO_FREE);
9289 break; 10360 break;
9290 case NREDIR: 10361 case NREDIR:
9291 case NBACKGND: 10362 case NBACKGND:
@@ -9293,6 +10364,8 @@ copynode(union node *n)
9293 new->nredir.redirect = copynode(n->nredir.redirect); 10364 new->nredir.redirect = copynode(n->nredir.redirect);
9294 new->nredir.n = copynode(n->nredir.n); 10365 new->nredir.n = copynode(n->nredir.n);
9295 new->nredir.linno = n->nredir.linno; 10366 new->nredir.linno = n->nredir.linno;
10367 SAVE_PTR2(new->nredir.redirect, "nredir.redirect", NO_FREE,
10368 new->nredir.n, "nredir.n", NO_FREE);
9296 break; 10369 break;
9297 case NAND: 10370 case NAND:
9298 case NOR: 10371 case NOR:
@@ -9301,37 +10374,58 @@ copynode(union node *n)
9301 case NUNTIL: 10374 case NUNTIL:
9302 new->nbinary.ch2 = copynode(n->nbinary.ch2); 10375 new->nbinary.ch2 = copynode(n->nbinary.ch2);
9303 new->nbinary.ch1 = copynode(n->nbinary.ch1); 10376 new->nbinary.ch1 = copynode(n->nbinary.ch1);
10377 SAVE_PTR2(new->nbinary.ch1, "nbinary.ch1", NO_FREE,
10378 new->nbinary.ch2, "nbinary.ch2", NO_FREE);
9304 break; 10379 break;
9305 case NIF: 10380 case NIF:
9306 new->nif.elsepart = copynode(n->nif.elsepart); 10381 new->nif.elsepart = copynode(n->nif.elsepart);
9307 new->nif.ifpart = copynode(n->nif.ifpart); 10382 new->nif.ifpart = copynode(n->nif.ifpart);
9308 new->nif.test = copynode(n->nif.test); 10383 new->nif.test = copynode(n->nif.test);
10384 SAVE_PTR3(new->nif.elsepart, "nif.elsepart", NO_FREE,
10385 new->nif.ifpart, "nif.ifpart", NO_FREE,
10386 new->nif.test, "nif.test", NO_FREE);
9309 break; 10387 break;
9310 case NFOR: 10388 case NFOR:
9311 new->nfor.var = nodeckstrdup(n->nfor.var); 10389 new->nfor.var = nodeckstrdup(n->nfor.var);
9312 new->nfor.body = copynode(n->nfor.body); 10390 new->nfor.body = copynode(n->nfor.body);
9313 new->nfor.args = copynode(n->nfor.args); 10391 new->nfor.args = copynode(n->nfor.args);
9314 new->nfor.linno = n->nfor.linno; 10392 new->nfor.linno = n->nfor.linno;
10393 SAVE_PTR3(new->nfor.var,
10394 xasprintf("nfor.var '%s'", n->nfor.var ?: "NULL"), FREE,
10395 new->nfor.body, "nfor.body", NO_FREE,
10396 new->nfor.args, "nfor.args", NO_FREE);
9315 break; 10397 break;
9316 case NCASE: 10398 case NCASE:
9317 new->ncase.cases = copynode(n->ncase.cases); 10399 new->ncase.cases = copynode(n->ncase.cases);
9318 new->ncase.expr = copynode(n->ncase.expr); 10400 new->ncase.expr = copynode(n->ncase.expr);
9319 new->ncase.linno = n->ncase.linno; 10401 new->ncase.linno = n->ncase.linno;
10402 SAVE_PTR2(new->ncase.cases, "ncase.cases", NO_FREE,
10403 new->ncase.expr, "ncase.expr", NO_FREE);
9320 break; 10404 break;
9321 case NCLIST: 10405 case NCLIST:
9322 new->nclist.body = copynode(n->nclist.body); 10406 new->nclist.body = copynode(n->nclist.body);
9323 new->nclist.pattern = copynode(n->nclist.pattern); 10407 new->nclist.pattern = copynode(n->nclist.pattern);
9324 new->nclist.next = copynode(n->nclist.next); 10408 new->nclist.next = copynode(n->nclist.next);
10409 SAVE_PTR3(new->nclist.body, "nclist.body", NO_FREE,
10410 new->nclist.pattern, "nclist.pattern", NO_FREE,
10411 new->nclist.next, "nclist.next", NO_FREE);
9325 break; 10412 break;
9326 case NDEFUN: 10413 case NDEFUN:
9327 new->ndefun.body = copynode(n->ndefun.body); 10414 new->ndefun.body = copynode(n->ndefun.body);
9328 new->ndefun.text = nodeckstrdup(n->ndefun.text); 10415 new->ndefun.text = nodeckstrdup(n->ndefun.text);
9329 new->ndefun.linno = n->ndefun.linno; 10416 new->ndefun.linno = n->ndefun.linno;
10417 SAVE_PTR2(new->ndefun.body, "ndefun.body", NO_FREE,
10418 new->ndefun.text,
10419 xasprintf("ndefun.text '%s'", n->ndefun.text ?: "NULL"), FREE);
9330 break; 10420 break;
9331 case NARG: 10421 case NARG:
9332 new->narg.backquote = copynodelist(n->narg.backquote); 10422 new->narg.backquote = copynodelist(n->narg.backquote);
9333 new->narg.text = nodeckstrdup(n->narg.text); 10423 new->narg.text = nodeckstrdup(n->narg.text);
9334 new->narg.next = copynode(n->narg.next); 10424 new->narg.next = copynode(n->narg.next);
10425 SAVE_PTR3(new->narg.backquote, "narg.backquote", NO_FREE,
10426 new->narg.text,
10427 xasprintf("narg.text '%s'", n->narg.text ?: "NULL"), FREE,
10428 new->narg.next, "narg.next", NO_FREE);
9335 break; 10429 break;
9336 case NTO: 10430 case NTO:
9337#if BASH_REDIR_OUTPUT 10431#if BASH_REDIR_OUTPUT
@@ -9345,6 +10439,8 @@ copynode(union node *n)
9345 new->nfile.fname = copynode(n->nfile.fname); 10439 new->nfile.fname = copynode(n->nfile.fname);
9346 new->nfile.fd = n->nfile.fd; 10440 new->nfile.fd = n->nfile.fd;
9347 new->nfile.next = copynode(n->nfile.next); 10441 new->nfile.next = copynode(n->nfile.next);
10442 SAVE_PTR2(new->nfile.fname, "nfile.fname", NO_FREE,
10443 new->nfile.next, "nfile.next", NO_FREE);
9348 break; 10444 break;
9349 case NTOFD: 10445 case NTOFD:
9350 case NFROMFD: 10446 case NFROMFD:
@@ -9352,15 +10448,20 @@ copynode(union node *n)
9352 new->ndup.dupfd = n->ndup.dupfd; 10448 new->ndup.dupfd = n->ndup.dupfd;
9353 new->ndup.fd = n->ndup.fd; 10449 new->ndup.fd = n->ndup.fd;
9354 new->ndup.next = copynode(n->ndup.next); 10450 new->ndup.next = copynode(n->ndup.next);
10451 SAVE_PTR2(new->ndup.vname, "ndup.vname", NO_FREE,
10452 new->ndup.next, "ndup.next", NO_FREE);
9355 break; 10453 break;
9356 case NHERE: 10454 case NHERE:
9357 case NXHERE: 10455 case NXHERE:
9358 new->nhere.doc = copynode(n->nhere.doc); 10456 new->nhere.doc = copynode(n->nhere.doc);
9359 new->nhere.fd = n->nhere.fd; 10457 new->nhere.fd = n->nhere.fd;
9360 new->nhere.next = copynode(n->nhere.next); 10458 new->nhere.next = copynode(n->nhere.next);
10459 SAVE_PTR2(new->nhere.doc, "nhere.doc", NO_FREE,
10460 new->nhere.next, "nhere.next", NO_FREE);
9361 break; 10461 break;
9362 case NNOT: 10462 case NNOT:
9363 new->nnot.com = copynode(n->nnot.com); 10463 new->nnot.com = copynode(n->nnot.com);
10464 SAVE_PTR(new->nnot.com, "nnot.com", NO_FREE);
9364 break; 10465 break;
9365 }; 10466 };
9366 new->type = n->type; 10467 new->type = n->type;
@@ -9381,6 +10482,7 @@ copyfunc(union node *n)
9381 f = ckzalloc(blocksize /* + funcstringsize */); 10482 f = ckzalloc(blocksize /* + funcstringsize */);
9382 funcblock = (char *) f + offsetof(struct funcnode, n); 10483 funcblock = (char *) f + offsetof(struct funcnode, n);
9383 funcstring_end = (char *) f + blocksize; 10484 funcstring_end = (char *) f + blocksize;
10485 IF_PLATFORM_MINGW32(fs_size = 0);
9384 copynode(n); 10486 copynode(n);
9385 /* f->count = 0; - ckzalloc did it */ 10487 /* f->count = 0; - ckzalloc did it */
9386 return f; 10488 return f;
@@ -9408,12 +10510,15 @@ defun(union node *func)
9408#define SKIPFUNCDEF (1 << 3) 10510#define SKIPFUNCDEF (1 << 3)
9409static smallint evalskip; /* set to SKIPxxx if we are skipping commands */ 10511static smallint evalskip; /* set to SKIPxxx if we are skipping commands */
9410static int skipcount; /* number of levels to skip */ 10512static int skipcount; /* number of levels to skip */
10513#if ENABLE_PLATFORM_POSIX
9411static int loopnest; /* current loop nesting level */ 10514static int loopnest; /* current loop nesting level */
10515#endif
9412static int funcline; /* starting line number of current function, or 0 if not in a function */ 10516static int funcline; /* starting line number of current function, or 0 if not in a function */
9413 10517
9414/* Forward decl way out to parsing code - dotrap needs it */ 10518/* Forward decl way out to parsing code - dotrap needs it */
9415static int evalstring(char *s, int flags); 10519static int evalstring(char *s, int flags);
9416 10520
10521#if !ENABLE_PLATFORM_MINGW32
9417/* Called to execute a trap. 10522/* Called to execute a trap.
9418 * Single callsite - at the end of evaltree(). 10523 * Single callsite - at the end of evaltree().
9419 * If we return non-zero, evaltree raises EXEXIT exception. 10524 * If we return non-zero, evaltree raises EXEXIT exception.
@@ -9472,6 +10577,47 @@ dotrap(void)
9472 savestatus = last_status; 10577 savestatus = last_status;
9473 TRACE(("dotrap returns\n")); 10578 TRACE(("dotrap returns\n"));
9474} 10579}
10580#else
10581static void
10582dotrap(void)
10583{
10584 int status, last_status;
10585 char *p;
10586
10587 if (!pending_int && waitcmd_int != 1) {
10588 waitcmd_int = 0;
10589 return;
10590 }
10591
10592 status = savestatus;
10593 last_status = status;
10594 if (status < 0) {
10595 status = exitstatus;
10596 savestatus = status;
10597 }
10598 pending_int = waitcmd_int = 0;
10599 barrier();
10600
10601 TRACE(("dotrap entered\n"));
10602 if (evalskip) {
10603 pending_int = 1;
10604 return;
10605 }
10606
10607 p = trap[SIGINT];
10608 if (p) {
10609 TRACE(("sig %d is active, will run handler '%s'\n", SIGINT, p));
10610 trap_depth++;
10611 evalstring(p, 0);
10612 trap_depth--;
10613 if (evalskip != SKIPFUNC)
10614 exitstatus = status;
10615 }
10616
10617 savestatus = last_status;
10618 TRACE(("dotrap returns\n"));
10619}
10620#endif
9475 10621
9476/* forward declarations - evaluation is fairly recursive business... */ 10622/* forward declarations - evaluation is fairly recursive business... */
9477static int evalloop(union node *, int); 10623static int evalloop(union node *, int);
@@ -9758,19 +10904,37 @@ evalcase(union node *n, int flags)
9758static int 10904static int
9759evalsubshell(union node *n, int flags) 10905evalsubshell(union node *n, int flags)
9760{ 10906{
10907 IF_PLATFORM_MINGW32(struct forkshell fs;)
9761 struct job *jp; 10908 struct job *jp;
9762 int backgnd = (n->type == NBACKGND); /* FORK_BG(1) if yes, else FORK_FG(0) */ 10909 int backgnd = (n->type == NBACKGND); /* FORK_BG(1) if yes, else FORK_FG(0) */
9763 int status; 10910 int status;
9764 10911
9765 errlinno = lineno = n->nredir.linno; 10912 errlinno = lineno = n->nredir.linno;
9766 10913
10914#if ENABLE_PLATFORM_MINGW32
10915 if (!backgnd && (flags & EV_EXIT) && !may_have_traps) {
10916 reset_exception_handler();
10917 expredir(n->nredir.redirect);
10918 redirect(n->nredir.redirect, 0);
10919 evaltreenr(n->nredir.n, flags);
10920 /* never returns */
10921 }
10922#else
9767 expredir(n->nredir.redirect); 10923 expredir(n->nredir.redirect);
9768 if (!backgnd && (flags & EV_EXIT) && !may_have_traps) 10924 if (!backgnd && (flags & EV_EXIT) && !may_have_traps)
9769 goto nofork; 10925 goto nofork;
10926#endif
9770 INTOFF; 10927 INTOFF;
9771 if (backgnd == FORK_FG) 10928 if (backgnd == FORK_FG)
9772 get_tty_state(); 10929 get_tty_state();
9773 jp = makejob(1); 10930 jp = makejob(1);
10931#if ENABLE_PLATFORM_MINGW32
10932 memset(&fs, 0, sizeof(fs));
10933 fs.fpid = FS_EVALSUBSHELL;
10934 fs.n = n;
10935 fs.flags = flags;
10936 spawn_forkshell(&fs, jp, n, backgnd);
10937#else
9774 if (forkshell(jp, n, backgnd) == 0) { 10938 if (forkshell(jp, n, backgnd) == 0) {
9775 /* child */ 10939 /* child */
9776 INTON; 10940 INTON;
@@ -9783,6 +10947,7 @@ evalsubshell(union node *n, int flags)
9783 evaltreenr(n->nredir.n, flags); 10947 evaltreenr(n->nredir.n, flags);
9784 /* never returns */ 10948 /* never returns */
9785 } 10949 }
10950#endif
9786 /* parent */ 10951 /* parent */
9787 status = 0; 10952 status = 0;
9788 if (backgnd == FORK_FG) 10953 if (backgnd == FORK_FG)
@@ -9864,6 +11029,7 @@ expredir(union node *n)
9864static int 11029static int
9865evalpipe(union node *n, int flags) 11030evalpipe(union node *n, int flags)
9866{ 11031{
11032 IF_PLATFORM_MINGW32(struct forkshell fs;)
9867 struct job *jp; 11033 struct job *jp;
9868 struct nodelist *lp; 11034 struct nodelist *lp;
9869 int pipelen; 11035 int pipelen;
@@ -9890,6 +11056,16 @@ evalpipe(union node *n, int flags)
9890 ash_msg_and_raise_perror("can't create pipe"); 11056 ash_msg_and_raise_perror("can't create pipe");
9891 } 11057 }
9892 } 11058 }
11059#if ENABLE_PLATFORM_MINGW32
11060 memset(&fs, 0, sizeof(fs));
11061 fs.fpid = FS_EVALPIPE;
11062 fs.flags = flags;
11063 fs.n = lp->n;
11064 fs.fd[0] = pip[0];
11065 fs.fd[1] = pip[1];
11066 fs.fd[2] = prevfd;
11067 spawn_forkshell(&fs, jp, lp->n, n->npipe.pipe_backgnd);
11068#else
9893 if (forkshell(jp, lp->n, n->npipe.pipe_backgnd) == 0) { 11069 if (forkshell(jp, lp->n, n->npipe.pipe_backgnd) == 0) {
9894 /* child */ 11070 /* child */
9895 reset_exception_handler(); 11071 reset_exception_handler();
@@ -9908,6 +11084,7 @@ evalpipe(union node *n, int flags)
9908 evaltreenr(lp->n, flags); 11084 evaltreenr(lp->n, flags);
9909 /* never returns */ 11085 /* never returns */
9910 } 11086 }
11087#endif
9911 /* parent */ 11088 /* parent */
9912 if (prevfd >= 0) 11089 if (prevfd >= 0)
9913 close(prevfd); 11090 close(prevfd);
@@ -9965,6 +11142,9 @@ setinteractive(int on)
9965 line_input_state = new_line_input_t(FOR_SHELL | WITH_PATH_LOOKUP); 11142 line_input_state = new_line_input_t(FOR_SHELL | WITH_PATH_LOOKUP);
9966# if ENABLE_FEATURE_TAB_COMPLETION 11143# if ENABLE_FEATURE_TAB_COMPLETION
9967 line_input_state->get_exe_name = ash_command_name; 11144 line_input_state->get_exe_name = ash_command_name;
11145# if ENABLE_ASH_GLOB_OPTIONS
11146 line_input_state->sh_accept_glob = ash_accept_glob;
11147# endif
9968# endif 11148# endif
9969# if EDITING_HAS_sh_get_var 11149# if EDITING_HAS_sh_get_var
9970 line_input_state->sh_get_var = lookupvar; 11150 line_input_state->sh_get_var = lookupvar;
@@ -9992,6 +11172,12 @@ optschanged(void)
9992#else 11172#else
9993 viflag = 0; /* forcibly keep the option off */ 11173 viflag = 0; /* forcibly keep the option off */
9994#endif 11174#endif
11175#if ENABLE_ASH_NOCONSOLE
11176 hide_console(noconsole);
11177#endif
11178#if ENABLE_PLATFORM_MINGW32
11179 setwinxp(winxp);
11180#endif
9995} 11181}
9996 11182
9997struct localvar_list { 11183struct localvar_list {
@@ -10011,6 +11197,9 @@ poplocalvars(int keep)
10011 struct localvar_list *ll; 11197 struct localvar_list *ll;
10012 struct localvar *lvp, *next; 11198 struct localvar *lvp, *next;
10013 struct var *vp; 11199 struct var *vp;
11200#if ENABLE_PLATFORM_MINGW32
11201 int var_type;
11202#endif
10014 11203
10015 INTOFF; 11204 INTOFF;
10016 ll = localvar_stack; 11205 ll = localvar_stack;
@@ -10053,6 +11242,17 @@ poplocalvars(int keep)
10053 free((char*)vp->var_text); 11242 free((char*)vp->var_text);
10054 vp->flags = lvp->flags; 11243 vp->flags = lvp->flags;
10055 vp->var_text = lvp->text; 11244 vp->var_text = lvp->text;
11245#if ENABLE_PLATFORM_MINGW32
11246 var_type = is_bb_var(lvp->text);
11247 if (var_type == BB_VAR_ASSIGN && (lvp->flags & VEXPORT))
11248 putenv(lvp->text);
11249 else if (var_type) {
11250 char *var = xstrdup(lvp->text);
11251 *strchrnul(var, '=') = '\0';
11252 unsetenv(var);
11253 free(var);
11254 }
11255#endif
10056 } 11256 }
10057 free(lvp); 11257 free(lvp);
10058 } 11258 }
@@ -10275,7 +11475,7 @@ execcmd(int argc UNUSED_PARAM, char **argv)
10275 prog = argv[0]; 11475 prog = argv[0];
10276 if (optionarg) 11476 if (optionarg)
10277 argv[0] = optionarg; 11477 argv[0] = optionarg;
10278 shellexec(prog, argv, pathval(), 0); 11478 shellexec(prog, argv, pathval(), 0, FALSE);
10279 /* NOTREACHED */ 11479 /* NOTREACHED */
10280 } 11480 }
10281 return 0; 11481 return 0;
@@ -10328,6 +11528,9 @@ static int readcmd(int, char **) FAST_FUNC;
10328static int setcmd(int, char **) FAST_FUNC; 11528static int setcmd(int, char **) FAST_FUNC;
10329static int shiftcmd(int, char **) FAST_FUNC; 11529static int shiftcmd(int, char **) FAST_FUNC;
10330static int timescmd(int, char **) FAST_FUNC; 11530static int timescmd(int, char **) FAST_FUNC;
11531#if ENABLE_PLATFORM_MINGW32
11532static int titlecmd(int, char **) FAST_FUNC;
11533#endif
10331static int trapcmd(int, char **) FAST_FUNC; 11534static int trapcmd(int, char **) FAST_FUNC;
10332static int umaskcmd(int, char **) FAST_FUNC; 11535static int umaskcmd(int, char **) FAST_FUNC;
10333static int unsetcmd(int, char **) FAST_FUNC; 11536static int unsetcmd(int, char **) FAST_FUNC;
@@ -10400,7 +11603,7 @@ static const struct builtincmd builtintab[] = {
10400#if MAX_HISTORY 11603#if MAX_HISTORY
10401 { BUILTIN_NOSPEC "history" , historycmd }, 11604 { BUILTIN_NOSPEC "history" , historycmd },
10402#endif 11605#endif
10403#if JOBS 11606#if JOBS || JOBS_WIN32
10404 { BUILTIN_REGULAR "jobs" , jobscmd }, 11607 { BUILTIN_REGULAR "jobs" , jobscmd },
10405 { BUILTIN_REGULAR "kill" , killcmd }, 11608 { BUILTIN_REGULAR "kill" , killcmd },
10406#endif 11609#endif
@@ -10427,6 +11630,9 @@ static const struct builtincmd builtintab[] = {
10427 { BUILTIN_REGULAR "test" , testcmd }, 11630 { BUILTIN_REGULAR "test" , testcmd },
10428#endif 11631#endif
10429 { BUILTIN_SPEC_REG "times" , timescmd }, 11632 { BUILTIN_SPEC_REG "times" , timescmd },
11633#if ENABLE_PLATFORM_MINGW32
11634 { BUILTIN_REGULAR "title" , titlecmd },
11635#endif
10430 { BUILTIN_SPEC_REG "trap" , trapcmd }, 11636 { BUILTIN_SPEC_REG "trap" , trapcmd },
10431 { BUILTIN_REGULAR "true" , truecmd }, 11637 { BUILTIN_REGULAR "true" , truecmd },
10432 { BUILTIN_REGULAR "type" , typecmd }, 11638 { BUILTIN_REGULAR "type" , typecmd },
@@ -10445,7 +11651,7 @@ static const struct builtincmd builtintab[] = {
10445 /* [ */ 1 * ENABLE_ASH_TEST + \ 11651 /* [ */ 1 * ENABLE_ASH_TEST + \
10446 /* [[ */ 1 * BASH_TEST2 + \ 11652 /* [[ */ 1 * BASH_TEST2 + \
10447 /* alias */ 1 * ENABLE_ASH_ALIAS + \ 11653 /* alias */ 1 * ENABLE_ASH_ALIAS + \
10448 /* bg */ 1 * ENABLE_ASH_JOB_CONTROL + \ 11654 /* bg */ 1 * JOBS + \
10449 /* break cd cddir */ 3) 11655 /* break cd cddir */ 3)
10450#define EVALCMD (COMMANDCMD + \ 11656#define EVALCMD (COMMANDCMD + \
10451 /* command */ 1 * ENABLE_ASH_CMDCMD + \ 11657 /* command */ 1 * ENABLE_ASH_CMDCMD + \
@@ -10526,6 +11732,7 @@ bltincmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
10526 * as POSIX mandates */ 11732 * as POSIX mandates */
10527 return back_exitstatus; 11733 return back_exitstatus;
10528} 11734}
11735
10529static int 11736static int
10530evalcommand(union node *cmd, int flags) 11737evalcommand(union node *cmd, int flags)
10531{ 11738{
@@ -10625,9 +11832,19 @@ evalcommand(union node *cmd, int flags)
10625 11832
10626 localvar_stop = pushlocalvars(vlocal); 11833 localvar_stop = pushlocalvars(vlocal);
10627 11834
11835#if ENABLE_PLATFORM_MINGW32
11836# if ENABLE_FEATURE_SH_STANDALONE
11837 /* Reserve two extra spots at the front for shellexec. */
11838 nargv = stalloc(sizeof(char *) * (argc + 3));
11839 argv = nargv = nargv + 2;
11840# else
11841 argv = nargv = stalloc(sizeof(char *) * (argc + 1));
11842# endif
11843#else
10628 /* Reserve one extra spot at the front for shellexec. */ 11844 /* Reserve one extra spot at the front for shellexec. */
10629 nargv = stalloc(sizeof(char *) * (argc + 2)); 11845 nargv = stalloc(sizeof(char *) * (argc + 2));
10630 argv = ++nargv; 11846 argv = ++nargv;
11847#endif
10631 for (sp = arglist.list; sp; sp = sp->next) { 11848 for (sp = arglist.list; sp; sp = sp->next) {
10632 TRACE(("evalcommand arg: %s\n", sp->text)); 11849 TRACE(("evalcommand arg: %s\n", sp->text));
10633 *nargv++ = sp->text; 11850 *nargv++ = sp->text;
@@ -10736,9 +11953,11 @@ evalcommand(union node *cmd, int flags)
10736 11953
10737 default: { 11954 default: {
10738 11955
11956//TODO: find a better solution for Windows on ARM than ignoring NOFORK
10739#if ENABLE_FEATURE_SH_STANDALONE \ 11957#if ENABLE_FEATURE_SH_STANDALONE \
10740 && ENABLE_FEATURE_SH_NOFORK \ 11958 && ENABLE_FEATURE_SH_NOFORK \
10741 && NUM_APPLETS > 1 11959 && NUM_APPLETS > 1 \
11960 && !(defined(_ARM64_) && !defined(_UCRT) && ENABLE_PLATFORM_MINGW32)
10742/* (1) BUG: if variables are set, we need to fork, or save/restore them 11961/* (1) BUG: if variables are set, we need to fork, or save/restore them
10743 * around run_nofork_applet() call. 11962 * around run_nofork_applet() call.
10744 * (2) Should this check also be done in forkshell()? 11963 * (2) Should this check also be done in forkshell()?
@@ -10748,6 +11967,9 @@ evalcommand(union node *cmd, int flags)
10748 int applet_no = (- cmdentry.u.index - 2); 11967 int applet_no = (- cmdentry.u.index - 2);
10749 if (applet_no >= 0 && APPLET_IS_NOFORK(applet_no)) { 11968 if (applet_no >= 0 && APPLET_IS_NOFORK(applet_no)) {
10750 char **sv_environ; 11969 char **sv_environ;
11970#if ENABLE_PLATFORM_MINGW32
11971 char *sv_argv0;
11972#endif
10751 11973
10752 INTOFF; 11974 INTOFF;
10753 sv_environ = environ; 11975 sv_environ = environ;
@@ -10760,8 +11982,16 @@ evalcommand(union node *cmd, int flags)
10760 * and/or wait for user input ineligible for NOFORK: 11982 * and/or wait for user input ineligible for NOFORK:
10761 * for example, "yes" or "rm" (rm -i waits for input). 11983 * for example, "yes" or "rm" (rm -i waits for input).
10762 */ 11984 */
11985#if ENABLE_PLATFORM_MINGW32
11986 sv_argv0 = __argv[0];
11987 argv[0] = (char *)bb_basename(argv[0]);
11988 __argv[0] = argv[0];
11989#endif
10763 exitstatus = run_nofork_applet(applet_no, argv); 11990 exitstatus = run_nofork_applet(applet_no, argv);
10764 environ = sv_environ; 11991 environ = sv_environ;
11992#if ENABLE_PLATFORM_MINGW32
11993 __argv[0] = sv_argv0;
11994#endif
10765 /* 11995 /*
10766 * Try enabling NOFORK for "yes" applet. 11996 * Try enabling NOFORK for "yes" applet.
10767 * ^C _will_ stop it (write returns EINTR), 11997 * ^C _will_ stop it (write returns EINTR),
@@ -10780,6 +12010,22 @@ evalcommand(union node *cmd, int flags)
10780 * in a script or a subshell does not need forking, 12010 * in a script or a subshell does not need forking,
10781 * we can just exec it. 12011 * we can just exec it.
10782 */ 12012 */
12013#if ENABLE_PLATFORM_MINGW32
12014 if (!(flags & EV_EXIT) || may_have_traps IF_SUW32(|| delayexit)) {
12015 /* No, forking off a child is necessary */
12016 struct forkshell fs;
12017
12018 INTOFF;
12019 memset(&fs, 0, sizeof(fs));
12020 fs.fpid = FS_SHELLEXEC;
12021 fs.argv = argv;
12022 fs.path = (char*)path;
12023 fs.fd[0] = cmdentry.u.index;
12024 jp = makejob(/*cmd,*/ 1);
12025 spawn_forkshell(&fs, jp, cmd, FORK_FG);
12026 break;
12027 }
12028#else
10783 if (!(flags & EV_EXIT) || may_have_traps) { 12029 if (!(flags & EV_EXIT) || may_have_traps) {
10784 /* No, forking off a child is necessary */ 12030 /* No, forking off a child is necessary */
10785 INTOFF; 12031 INTOFF;
@@ -10787,7 +12033,8 @@ evalcommand(union node *cmd, int flags)
10787 jp = vforkexec(cmd, argv, path, cmdentry.u.index); 12033 jp = vforkexec(cmd, argv, path, cmdentry.u.index);
10788 break; 12034 break;
10789 } 12035 }
10790 shellexec(argv[0], argv, path, cmdentry.u.index); 12036#endif
12037 shellexec(argv[0], argv, path, cmdentry.u.index, FALSE);
10791 /* NOTREACHED */ 12038 /* NOTREACHED */
10792 } /* default */ 12039 } /* default */
10793 case CMDBUILTIN: 12040 case CMDBUILTIN:
@@ -10998,6 +12245,54 @@ static void popstring(void)
10998 INTON; 12245 INTON;
10999} 12246}
11000 12247
12248#if ENABLE_PLATFORM_MINGW32
12249/*
12250 * Wrapper around nonblock_immune_read() to remove CRs, but only from
12251 * CRLF pairs. The tricky part is handling a CR at the end of the buffer.
12252 */
12253static inline ssize_t
12254nonblock_immune_wrapper(struct parsefile *pf, char *buffer, size_t count)
12255{
12256 int nr, injected_cr;
12257
12258 // Inject unprocessed CR from previous read into the buffer.
12259 if (pf->cr)
12260 *buffer = '\r';
12261 retry:
12262 nr = nonblock_immune_read(pf->pf_fd, buffer + pf->cr, count - pf->cr);
12263 if (nr < 0)
12264 return nr;
12265
12266 injected_cr = pf->cr;
12267 nr += pf->cr;
12268 pf->cr = 0;
12269
12270 if (nr > 0) {
12271 nr = remove_cr(buffer, nr);
12272 // remove_cr() won't reduce size to zero, so [nr - 1] is OK.
12273 if (buffer[nr - 1] == '\r') {
12274 if (nr > 1) {
12275 // Ignore trailing CR for now: we'll deal with it later.
12276 pf->cr = 1;
12277 --nr;
12278 } else if (injected_cr) { // nr == 1
12279 // Buffer only contains an injected CR. This means the
12280 // read returned EOF. Return the buffer as-is. The
12281 // next call will detect EOF.
12282 } else {
12283 // Buffer only contains a CR from the most recent read.
12284 // Try another read, treating the CR as injected. We'll
12285 // either get more characters or EOF. Either way we
12286 // won't end up here again.
12287 pf->cr = 1;
12288 goto retry;
12289 }
12290 }
12291 }
12292 return nr;
12293}
12294#endif
12295
11001static int 12296static int
11002preadfd(void) 12297preadfd(void)
11003{ 12298{
@@ -11008,7 +12303,11 @@ preadfd(void)
11008#if ENABLE_FEATURE_EDITING 12303#if ENABLE_FEATURE_EDITING
11009 /* retry: */ 12304 /* retry: */
11010 if (!iflag || g_parsefile->pf_fd != STDIN_FILENO) 12305 if (!iflag || g_parsefile->pf_fd != STDIN_FILENO)
12306#if ENABLE_PLATFORM_MINGW32
12307 nr = nonblock_immune_wrapper(g_parsefile, buf, IBUFSIZ - 1);
12308#else
11011 nr = nonblock_immune_read(g_parsefile->pf_fd, buf, IBUFSIZ - 1); 12309 nr = nonblock_immune_read(g_parsefile->pf_fd, buf, IBUFSIZ - 1);
12310#endif
11012 else { 12311 else {
11013# if ENABLE_ASH_IDLE_TIMEOUT 12312# if ENABLE_ASH_IDLE_TIMEOUT
11014 int timeout = -1; 12313 int timeout = -1;
@@ -11047,17 +12346,29 @@ preadfd(void)
11047 INTON; /* here non-blocked SIGINT will longjmp */ 12346 INTON; /* here non-blocked SIGINT will longjmp */
11048 if (nr == 0) { 12347 if (nr == 0) {
11049 /* ^C pressed, "convert" to SIGINT */ 12348 /* ^C pressed, "convert" to SIGINT */
12349# if !ENABLE_PLATFORM_MINGW32
11050 write(STDOUT_FILENO, "^C\n", 3); 12350 write(STDOUT_FILENO, "^C\n", 3);
11051 raise(SIGINT); /* here non-blocked SIGINT will longjmp */ 12351 raise(SIGINT); /* here non-blocked SIGINT will longjmp */
11052 /* raise(SIGINT) did not work! (e.g. if SIGINT 12352 /* raise(SIGINT) did not work! (e.g. if SIGINT
11053 * is SIG_IGNed on startup, it stays SIG_IGNed) 12353 * is SIG_IGNed on startup, it stays SIG_IGNed)
11054 */ 12354 */
12355# else
12356 write(STDOUT_FILENO, "^C\n", 3);
12357# endif
11055 if (trap[SIGINT]) { 12358 if (trap[SIGINT]) {
12359# if ENABLE_PLATFORM_MINGW32
12360 pending_int = 1;
12361 dotrap();
12362# endif
11056 empty_line_input: 12363 empty_line_input:
11057 buf[0] = '\n'; 12364 buf[0] = '\n';
11058 buf[1] = '\0'; 12365 buf[1] = '\0';
11059 return 1; 12366 return 1;
11060 } 12367 }
12368# if ENABLE_PLATFORM_MINGW32
12369 else
12370 raise_interrupt();
12371# endif
11061 exitstatus = 128 + SIGINT; 12372 exitstatus = 128 + SIGINT;
11062 /* bash behavior on ^C + ignored SIGINT: */ 12373 /* bash behavior on ^C + ignored SIGINT: */
11063 goto again; 12374 goto again;
@@ -11081,7 +12392,11 @@ preadfd(void)
11081 } 12392 }
11082 } 12393 }
11083#else 12394#else
12395# if ENABLE_PLATFORM_MINGW32
12396 nr = nonblock_immune_wrapper(g_parsefile, buf, IBUFSIZ - 1);
12397# else
11084 nr = nonblock_immune_read(g_parsefile->pf_fd, buf, IBUFSIZ - 1); 12398 nr = nonblock_immune_read(g_parsefile->pf_fd, buf, IBUFSIZ - 1);
12399# endif
11085#endif 12400#endif
11086 12401
11087#if 0 /* disabled: nonblock_immune_read() handles this problem */ 12402#if 0 /* disabled: nonblock_immune_read() handles this problem */
@@ -11380,6 +12695,7 @@ popallfiles(void)
11380 unwindfiles(&basepf); 12695 unwindfiles(&basepf);
11381} 12696}
11382 12697
12698#if !ENABLE_PLATFORM_MINGW32
11383/* 12699/*
11384 * Close the file(s) that the shell is reading commands from. Called 12700 * Close the file(s) that the shell is reading commands from. Called
11385 * after a fork is done. 12701 * after a fork is done.
@@ -11393,6 +12709,7 @@ closescript(void)
11393 g_parsefile->pf_fd = 0; 12709 g_parsefile->pf_fd = 0;
11394 } 12710 }
11395} 12711}
12712#endif
11396 12713
11397/* 12714/*
11398 * Like setinputfile, but takes an open file descriptor. Call this with 12715 * Like setinputfile, but takes an open file descriptor. Call this with
@@ -11625,8 +12942,19 @@ options(int *login_sh)
11625 int val; 12942 int val;
11626 int c; 12943 int c;
11627 12944
11628 if (login_sh != NULL) /* if we came from startup code */ 12945#if ENABLE_ASH_NOCONSOLE
12946 noconsole = console_state();
12947#endif
12948 if (login_sh != NULL) { /* if we came from startup code */
11629 minusc = NULL; 12949 minusc = NULL;
12950#if ENABLE_PLATFORM_MINGW32
12951 dirarg = NULL;
12952 title = NULL;
12953# if ENABLE_SUW32
12954 delayexit = 0;
12955# endif
12956#endif
12957 }
11630 while ((p = *argptr) != NULL) { 12958 while ((p = *argptr) != NULL) {
11631 c = *p++; 12959 c = *p++;
11632 if (c != '-' && c != '+') 12960 if (c != '-' && c != '+')
@@ -11656,6 +12984,31 @@ options(int *login_sh)
11656 cflag = 1; 12984 cflag = 1;
11657 continue; 12985 continue;
11658 } 12986 }
12987#if ENABLE_PLATFORM_MINGW32
12988 /* Undocumented flags;
12989 * -d force current directory
12990 * -t title to display in console window
12991 * -N prompt user before exit
12992 * Must appear before -s or -c. */
12993 if (c == 'd' && val == 1) {
12994 if (*argptr == NULL)
12995 ash_msg_and_raise_error(bb_msg_requires_arg, "-d");
12996 dirarg = *argptr++;
12997 continue;
12998 }
12999 if (c == 't' && val == 1) {
13000 if (*argptr == NULL)
13001 ash_msg_and_raise_error(bb_msg_requires_arg, "-t");
13002 title = *argptr++;
13003 continue;
13004 }
13005# if ENABLE_SUW32
13006 if (c == 'N' && val == 1) {
13007 delayexit = 1;
13008 continue;
13009 }
13010# endif
13011#endif
11659 if (c == 's') { /* -s, +s */ 13012 if (c == 's') { /* -s, +s */
11660 sflag = 1; 13013 sflag = 1;
11661 continue; 13014 continue;
@@ -13699,6 +15052,9 @@ evalstring(char *s, int flags)
13699 int status; 15052 int status;
13700 15053
13701 s = sstrdup(s); 15054 s = sstrdup(s);
15055#if ENABLE_PLATFORM_MINGW32
15056 remove_cr(s, strlen(s)+1);
15057#endif
13702 setinputstring(s); 15058 setinputstring(s);
13703 setstackmark(&smark); 15059 setstackmark(&smark);
13704 15060
@@ -13786,7 +15142,7 @@ cmdloop(int top)
13786 int skip; 15142 int skip;
13787 15143
13788 setstackmark(&smark); 15144 setstackmark(&smark);
13789#if JOBS 15145#if JOBS || JOBS_WIN32
13790 if (jobctl) 15146 if (jobctl)
13791 showjobs(SHOW_CHANGED|SHOW_STDERR); 15147 showjobs(SHOW_CHANGED|SHOW_STDERR);
13792#endif 15148#endif
@@ -13794,6 +15150,9 @@ cmdloop(int top)
13794 if (iflag && top) { 15150 if (iflag && top) {
13795 inter++; 15151 inter++;
13796 chkmail(); 15152 chkmail();
15153#if ENABLE_PLATFORM_MINGW32
15154 terminal_mode(TRUE);
15155#endif
13797 } 15156 }
13798 n = parsecmd(inter); 15157 n = parsecmd(inter);
13799#if DEBUG 15158#if DEBUG
@@ -13817,8 +15176,10 @@ cmdloop(int top)
13817 } else { 15176 } else {
13818 int i; 15177 int i;
13819 15178
15179#if !ENABLE_PLATFORM_MINGW32
13820 /* job_warning can only be 2,1,0. Here 2->1, 1/0->0 */ 15180 /* job_warning can only be 2,1,0. Here 2->1, 1/0->0 */
13821 job_warning >>= 1; 15181 job_warning >>= 1;
15182#endif
13822 numeof = 0; 15183 numeof = 0;
13823 i = evaltree(n, 0); 15184 i = evaltree(n, 0);
13824 if (n) 15185 if (n)
@@ -13848,7 +15209,7 @@ find_dot_file(char *basename)
13848 int len; 15209 int len;
13849 15210
13850 /* don't try this for absolute or relative paths */ 15211 /* don't try this for absolute or relative paths */
13851 if (strchr(basename, '/')) 15212 if (strchr(basename, '/') IF_PLATFORM_MINGW32(|| strchr(basename, '\\')))
13852 return basename; 15213 return basename;
13853 15214
13854 path = pathval(); 15215 path = pathval();
@@ -14013,6 +15374,7 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
14013 struct builtincmd *bcmd; 15374 struct builtincmd *bcmd;
14014 int len; 15375 int len;
14015 15376
15377#if !ENABLE_PLATFORM_MINGW32
14016 /* If name contains a slash, don't use PATH or hash table */ 15378 /* If name contains a slash, don't use PATH or hash table */
14017 if (strchr(name, '/') != NULL) { 15379 if (strchr(name, '/') != NULL) {
14018 entry->u.index = -1; 15380 entry->u.index = -1;
@@ -14032,6 +15394,35 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
14032 entry->cmdtype = CMDNORMAL; 15394 entry->cmdtype = CMDNORMAL;
14033 return; 15395 return;
14034 } 15396 }
15397#else /* ENABLE_PLATFORM_MINGW32 */
15398 /* If name contains a slash or drive prefix, don't use PATH or hash table */
15399 if (has_path(name)) {
15400 entry->u.index = -1;
15401 entry->cmdtype = CMDNORMAL;
15402 fullname = stack_add_ext_space(name);
15403 if (add_win32_extension(fullname)) {
15404 return;
15405 } else if (unix_path(name)) {
15406 name = (char *)bb_basename(name);
15407 if (
15408# if ENABLE_FEATURE_SH_STANDALONE
15409 find_applet_by_name_for_sh(name, path) >= 0 ||
15410# endif
15411 !find_builtin(bb_basename(name))
15412 ) {
15413 act |= DO_NOFUNC;
15414 } else if (act & DO_ABS) {
15415 entry->cmdtype = CMDUNKNOWN;
15416 return;
15417 }
15418 } else if (act & DO_ABS) {
15419 entry->cmdtype = CMDUNKNOWN;
15420 return;
15421 } else {
15422 return;
15423 }
15424 }
15425#endif /* ENABLE_PLATFORM_MINGW32 */
14035 15426
14036/* #if ENABLE_FEATURE_SH_STANDALONE... moved after builtin check */ 15427/* #if ENABLE_FEATURE_SH_STANDALONE... moved after builtin check */
14037 15428
@@ -14086,7 +15477,7 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
14086 15477
14087#if ENABLE_FEATURE_SH_STANDALONE 15478#if ENABLE_FEATURE_SH_STANDALONE
14088 { 15479 {
14089 int applet_no = find_applet_by_name(name); 15480 int applet_no = find_applet_by_name_for_sh(name, path);
14090 if (applet_no >= 0) { 15481 if (applet_no >= 0) {
14091 entry->cmdtype = CMDNORMAL; 15482 entry->cmdtype = CMDNORMAL;
14092 entry->u.index = -2 - applet_no; 15483 entry->u.index = -2 - applet_no;
@@ -14125,12 +15516,15 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
14125 } 15516 }
14126 } 15517 }
14127 /* if rehash, don't redo absolute path names */ 15518 /* if rehash, don't redo absolute path names */
14128 if (fullname[0] == '/' && idx <= prev) { 15519 if (!is_relative_path(fullname) && idx <= prev) {
14129 if (idx < prev) 15520 if (idx < prev)
14130 continue; 15521 continue;
14131 TRACE(("searchexec \"%s\": no change\n", name)); 15522 TRACE(("searchexec \"%s\": no change\n", name));
14132 goto success; 15523 goto success;
14133 } 15524 }
15525#if ENABLE_PLATFORM_MINGW32
15526 add_win32_extension(fullname);
15527#endif
14134 while (stat(fullname, &statb) < 0) { 15528 while (stat(fullname, &statb) < 0) {
14135#ifdef SYSV 15529#ifdef SYSV
14136 if (errno == EINTR) 15530 if (errno == EINTR)
@@ -14268,19 +15662,45 @@ trapcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
14268 if (LONE_DASH(action)) 15662 if (LONE_DASH(action))
14269 action = NULL; 15663 action = NULL;
14270 else { 15664 else {
15665#if !ENABLE_PLATFORM_MINGW32
14271 if (action[0]) /* not NULL and not "" and not "-" */ 15666 if (action[0]) /* not NULL and not "" and not "-" */
14272 may_have_traps = 1; 15667 may_have_traps = 1;
15668#endif
14273 action = ckstrdup(action); 15669 action = ckstrdup(action);
14274 } 15670 }
14275 } 15671 }
14276 free(trap[signo]); 15672 free(trap[signo]);
14277 trap[signo] = action; 15673 trap[signo] = action;
15674#if ENABLE_PLATFORM_MINGW32
15675 if (signo == SIGINT) {
15676 // trap '' INT disables Ctrl-C, anything else enables it
15677 if (action && action[0] == '\0') {
15678 SetConsoleCtrlHandler(NULL, TRUE);
15679# if ENABLE_FEATURE_EDITING
15680 if (line_input_state) {
15681 line_input_state->flags |= IGNORE_CTRL_C;
15682 }
15683# endif
15684 } else {
15685 SetConsoleCtrlHandler(NULL, FALSE);
15686# if ENABLE_FEATURE_EDITING
15687 if (line_input_state) {
15688 line_input_state->flags &= ~IGNORE_CTRL_C;
15689 }
15690# endif
15691 }
15692 }
15693#else
14278 if (signo != 0 && signo < NSIG) 15694 if (signo != 0 && signo < NSIG)
14279 setsignal(signo); 15695 setsignal(signo);
15696#endif
14280 INTON; 15697 INTON;
14281 next: 15698 next:
14282 ap++; 15699 ap++;
14283 } 15700 }
15701#if ENABLE_PLATFORM_MINGW32
15702 may_have_traps = trap[SIGINT] && trap[SIGINT][0] != '\0';
15703#endif
14284 return exitcode; 15704 return exitcode;
14285} 15705}
14286 15706
@@ -14309,10 +15729,12 @@ helpcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
14309 { 15729 {
14310 const char *a = applet_names; 15730 const char *a = applet_names;
14311 while (*a) { 15731 while (*a) {
14312 col += out1fmt("%c%s", ((col == 0) ? '\t' : ' '), a); 15732 if (prefer_applet(a, pathval())) {
14313 if (col > 60) { 15733 col += out1fmt("%c%s", ((col == 0) ? '\t' : ' '), a);
14314 out1fmt("\n"); 15734 if (col > 60) {
14315 col = 0; 15735 out1fmt("\n");
15736 col = 0;
15737 }
14316 } 15738 }
14317 while (*a++ != '\0') 15739 while (*a++ != '\0')
14318 continue; 15740 continue;
@@ -14374,7 +15796,24 @@ exportcmd(int argc UNUSED_PARAM, char **argv)
14374 } else { 15796 } else {
14375 vp = *findvar(name); 15797 vp = *findvar(name);
14376 if (vp) { 15798 if (vp) {
15799#if ENABLE_PLATFORM_MINGW32
15800 if (is_bb_var(name) == BB_VAR_EXACT) {
15801 if (flag_off == ~VEXPORT)
15802 unsetenv(name);
15803 else if (flag == VEXPORT && !(vp->flags & VUNSET))
15804 putenv(vp->var_text);
15805 }
15806#endif
14377 vp->flags = ((vp->flags | flag) & flag_off); 15807 vp->flags = ((vp->flags | flag) & flag_off);
15808#if ENABLE_PLATFORM_MINGW32
15809 /* Unexporting a variable imported from the
15810 * environment restores its original value and
15811 * removes the VIMPORT flag. */
15812 if ((vp->flags & VIMPORT) && (flag_off == ~VEXPORT)) {
15813 vp->flags &= ~VIMPORT;
15814 p = getenv(name);
15815 } else
15816#endif
14378 continue; 15817 continue;
14379 } 15818 }
14380 } 15819 }
@@ -14465,6 +15904,21 @@ timescmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
14465 return 0; 15904 return 0;
14466} 15905}
14467 15906
15907#if ENABLE_PLATFORM_MINGW32
15908static int FAST_FUNC
15909titlecmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
15910{
15911 if (*argptr == NULL) {
15912 char buffer[256];
15913 if (get_title(buffer, sizeof(buffer)))
15914 puts(buffer);
15915 } else {
15916 set_title(*argptr);
15917 }
15918 return 0;
15919}
15920#endif
15921
14468#if ENABLE_FEATURE_SH_MATH 15922#if ENABLE_FEATURE_SH_MATH
14469/* 15923/*
14470 * The let builtin. Partially stolen from GNU Bash, the Bourne Again SHell. 15924 * The let builtin. Partially stolen from GNU Bash, the Bourne Again SHell.
@@ -14557,6 +16011,7 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
14557 r = shell_builtin_read(&params); 16011 r = shell_builtin_read(&params);
14558 INTON; 16012 INTON;
14559 16013
16014#if !ENABLE_PLATFORM_MINGW32
14560 if ((uintptr_t)r == 1 && errno == EINTR) { 16015 if ((uintptr_t)r == 1 && errno == EINTR) {
14561 /* To get SIGCHLD: sleep 1 & read x; echo $x 16016 /* To get SIGCHLD: sleep 1 & read x; echo $x
14562 * Correct behavior is to not exit "read" 16017 * Correct behavior is to not exit "read"
@@ -14569,6 +16024,29 @@ readcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
14569 /* bash: "The exit status is greater than 128 if the timeout is exceeded." */ 16024 /* bash: "The exit status is greater than 128 if the timeout is exceeded." */
14570 /* The actual value observed with bash 5.2.15: */ 16025 /* The actual value observed with bash 5.2.15: */
14571 return 128 + SIGALRM; 16026 return 128 + SIGALRM;
16027#else /* ENABLE_PLATFORM_MINGW32 */
16028 if ((uintptr_t)r == 2) {
16029 /* Timeout, return 128 + SIGALRM */
16030 return 142;
16031 } else if ((uintptr_t)r == 3) {
16032 /* ^C pressed, propagate event */
16033 if (trap[SIGINT]) {
16034 write(STDOUT_FILENO, "^C", 2);
16035 pending_int = 1;
16036 dotrap();
16037 if (!(rootshell && iflag))
16038 return (uintptr_t)0;
16039 else
16040 goto again;
16041 } else if (iflag) {
16042 raise_interrupt();
16043 } else {
16044 GenerateConsoleCtrlEvent(CTRL_C_EVENT, 0);
16045 exitshell();
16046 }
16047 return (uintptr_t)r;
16048 }
16049#endif
14572 16050
14573 if ((uintptr_t)r > 1) 16051 if ((uintptr_t)r > 1)
14574 ash_msg_and_raise_error(r); 16052 ash_msg_and_raise_error(r);
@@ -14630,6 +16108,9 @@ umaskcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
14630 if (!isdigit(modestr[0])) 16108 if (!isdigit(modestr[0]))
14631 mask ^= 0777; 16109 mask ^= 0777;
14632 umask(mask); 16110 umask(mask);
16111#if ENABLE_PLATFORM_MINGW32
16112 setvareq(xasprintf("BB_UMASK=0%o", mask), VEXPORT|VNOSAVE);
16113#endif
14633 } 16114 }
14634 return 0; 16115 return 0;
14635} 16116}
@@ -14730,6 +16211,13 @@ exitshell(void)
14730 /*free(p); - we'll exit soon */ 16211 /*free(p); - we'll exit soon */
14731 } 16212 }
14732 out: 16213 out:
16214#if ENABLE_SUW32
16215 if (delayexit) {
16216#define EXIT_MSG "Press any key to exit..."
16217 console_write(EXIT_MSG, sizeof(EXIT_MSG) - 1);
16218 _getch();
16219 }
16220#endif
14733 exitreset(); 16221 exitreset();
14734 /* dash wraps setjobctl(0) in "if (setjmp(loc.loc) == 0) {...}". 16222 /* dash wraps setjobctl(0) in "if (setjmp(loc.loc) == 0) {...}".
14735 * our setjobctl(0) does not panic if tcsetpgrp fails inside it. 16223 * our setjobctl(0) does not panic if tcsetpgrp fails inside it.
@@ -14740,22 +16228,99 @@ exitshell(void)
14740 /* NOTREACHED */ 16228 /* NOTREACHED */
14741} 16229}
14742 16230
16231#if ENABLE_PLATFORM_MINGW32
16232/* We need to see if HOME is *really* unset */
16233# undef getenv
16234static void setvar_if_unset(const char *key, const char *value)
16235{
16236 if (!getenv(key) || getuid() == 0)
16237 setvar(key, value, VEXPORT);
16238}
16239#endif
16240
14743/* Don't inline: conserve stack of caller from having our locals too */ 16241/* Don't inline: conserve stack of caller from having our locals too */
14744static NOINLINE void 16242static NOINLINE void
14745init(void) 16243init(void)
14746{ 16244{
16245#if ENABLE_PLATFORM_MINGW32
16246 int import = 0;
16247#endif
16248
14747 /* we will never free this */ 16249 /* we will never free this */
14748 basepf.next_to_pgetc = basepf.buf = ckzalloc(IBUFSIZ); 16250 basepf.next_to_pgetc = basepf.buf = ckzalloc(IBUFSIZ);
14749 basepf.linno = 1; 16251 basepf.linno = 1;
14750 16252
16253#if !ENABLE_PLATFORM_MINGW32
14751 sigmode[SIGCHLD - 1] = S_DFL; /* ensure we install handler even if it is SIG_IGNed */ 16254 sigmode[SIGCHLD - 1] = S_DFL; /* ensure we install handler even if it is SIG_IGNed */
14752 setsignal(SIGCHLD); 16255 setsignal(SIGCHLD);
16256#endif
14753 16257
14754 { 16258 {
14755 char **envp; 16259 char **envp;
14756 const char *p; 16260 const char *p;
14757 16261
14758 initvar(); 16262 initvar();
16263
16264#if ENABLE_PLATFORM_MINGW32
16265 /*
16266 * case insensitive env names from Windows world
16267 *
16268 * Some standard env names such as PATH is named Path and so on
16269 * ash itself is case sensitive, so "Path" will confuse it, as
16270 * MSVC getenv() is case insensitive.
16271 *
16272 * We may end up having both Path and PATH. Then Path will be chosen
16273 * because it appears first.
16274 */
16275 if (windows_env()) {
16276 /*
16277 * If we get here it's because the environment suggests we
16278 * haven't been invoked from an earlier instance of BusyBox.
16279 */
16280 char *start, *end;
16281 struct passwd *pw;
16282
16283 /* mintty sets HOME: unset it */
16284 const char *tty = getenv("TERM_PROGRAM");
16285 if (tty && strcmp(tty, "mintty") == 0) {
16286 unsetenv("HOME");
16287 }
16288
16289 import = VIMPORT;
16290 for (envp = environ; envp && *envp; envp++) {
16291 if (!(end=strchr(*envp, '=')))
16292 continue;
16293
16294 /* check for invalid characters in name */
16295 start = (char *)endofname(*envp);
16296 if (*start != '=') {
16297 /* Make a copy of the original variable */
16298 setvareq(xstrdup(*envp), VEXPORT|VNOSAVE);
16299
16300 /* Replace invalid characters with underscores */
16301 for (; start < end; start++) {
16302 if (!isalnum(*start)) {
16303 *start = '_';
16304 }
16305 }
16306 }
16307
16308 /* make all variable names uppercase */
16309 for (start = *envp;start < end;start++)
16310 *start = toupper(*start);
16311 }
16312
16313 /* Initialise some variables normally set at login, but
16314 * only if someone hasn't already set them or we're root. */
16315 pw = getpwuid(getuid());
16316 if (pw) {
16317 setvar_if_unset("USER", pw->pw_name);
16318 setvar_if_unset("LOGNAME", pw->pw_name);
16319 setvar_if_unset("HOME", pw->pw_dir);
16320 }
16321 setvar_if_unset("SHELL", DEFAULT_SHELL);
16322 }
16323#endif
14759 for (envp = environ; envp && *envp; envp++) { 16324 for (envp = environ; envp && *envp; envp++) {
14760/* Used to have 16325/* Used to have
14761 * p = endofname(*envp); 16326 * p = endofname(*envp);
@@ -14769,7 +16334,11 @@ init(void)
14769 * os.execv("ash", [ 'ash', '-c', 'env | grep test-test' ]) # breaks this 16334 * os.execv("ash", [ 'ash', '-c', 'env | grep test-test' ]) # breaks this
14770 */ 16335 */
14771 if (strchr(*envp, '=')) { 16336 if (strchr(*envp, '=')) {
16337#if !ENABLE_PLATFORM_MINGW32
14772 setvareq(*envp, VEXPORT|VTEXTFIXED); 16338 setvareq(*envp, VEXPORT|VTEXTFIXED);
16339#else
16340 setvareq(*envp, VEXPORT|import);
16341#endif
14773 } 16342 }
14774 } 16343 }
14775 16344
@@ -14816,7 +16385,11 @@ procargs(char **xargv)
14816 int i; 16385 int i;
14817 int login_sh; 16386 int login_sh;
14818 16387
16388#if ENABLE_PLATFORM_MINGW32
16389 login_sh = applet_name[0] == 'l';
16390#else
14819 login_sh = /*xargv[0] &&*/ xargv[0][0] == '-'; 16391 login_sh = /*xargv[0] &&*/ xargv[0][0] == '-';
16392#endif
14820#if NUM_SCRIPTS > 0 16393#if NUM_SCRIPTS > 0
14821 if (minusc) 16394 if (minusc)
14822 goto setarg0; 16395 goto setarg0;
@@ -14839,7 +16412,9 @@ procargs(char **xargv)
14839 } 16412 }
14840 if (iflag == 2 /* no explicit -i given */ 16413 if (iflag == 2 /* no explicit -i given */
14841 && sflag == 1 /* -s given (or implied) */ 16414 && sflag == 1 /* -s given (or implied) */
16415#if !ENABLE_PLATFORM_MINGW32
14842 && !minusc /* bash compat: ash -sc 'echo $-' is not interactive (dash is) */ 16416 && !minusc /* bash compat: ash -sc 'echo $-' is not interactive (dash is) */
16417#endif
14843 && isatty(0) && isatty(1) /* we are on tty */ 16418 && isatty(0) && isatty(1) /* we are on tty */
14844 ) { 16419 ) {
14845 iflag = 1; 16420 iflag = 1;
@@ -14859,6 +16434,9 @@ procargs(char **xargv)
14859 goto setarg0; 16434 goto setarg0;
14860 } else if (!sflag) { 16435 } else if (!sflag) {
14861 setinputfile(*xargv, 0); 16436 setinputfile(*xargv, 0);
16437#if ENABLE_PLATFORM_MINGW32
16438 bs_to_slash(*xargv);
16439#endif
14862 setarg0: 16440 setarg0:
14863 arg0 = *xargv++; 16441 arg0 = *xargv++;
14864 } 16442 }
@@ -14881,8 +16459,10 @@ procargs(char **xargv)
14881 * NB: must do it before setting up signals (in optschanged()) 16459 * NB: must do it before setting up signals (in optschanged())
14882 * and reading .profile etc (after we return from here): 16460 * and reading .profile etc (after we return from here):
14883 */ 16461 */
16462#if !ENABLE_PLATFORM_MINGW32
14884 if (iflag) 16463 if (iflag)
14885 signal(SIGHUP, SIG_DFL); 16464 signal(SIGHUP, SIG_DFL);
16465#endif
14886 16466
14887 optschanged(); 16467 optschanged();
14888 16468
@@ -14926,9 +16506,21 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
14926 struct stackmark smark; 16506 struct stackmark smark;
14927 int login_sh; 16507 int login_sh;
14928 16508
16509#if ENABLE_PLATFORM_MINGW32
16510 INIT_G_memstack();
16511
16512 if (argc == 3 && !strcmp(argv[1], "--fs")) {
16513 forkshell_init(argv[2]);
16514 /* only reached in case of error */
16515 bb_error_msg_and_die("forkshell failed");
16516 }
16517#endif
16518
14929 /* Initialize global data */ 16519 /* Initialize global data */
14930 INIT_G_misc(); 16520 INIT_G_misc();
16521#if !ENABLE_PLATFORM_MINGW32
14931 INIT_G_memstack(); 16522 INIT_G_memstack();
16523#endif
14932 INIT_G_var(); 16524 INIT_G_var();
14933#if ENABLE_ASH_ALIAS 16525#if ENABLE_ASH_ALIAS
14934 INIT_G_alias(); 16526 INIT_G_alias();
@@ -14974,6 +16566,10 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
14974 init(); 16566 init();
14975 setstackmark(&smark); 16567 setstackmark(&smark);
14976 16568
16569#if ENABLE_PLATFORM_MINGW32
16570 SetConsoleCtrlHandler(ctrl_handler, TRUE);
16571#endif
16572
14977#if NUM_SCRIPTS > 0 16573#if NUM_SCRIPTS > 0
14978 if (argc < 0) 16574 if (argc < 0)
14979 /* Non-NULL minusc tells procargs that an embedded script is being run */ 16575 /* Non-NULL minusc tells procargs that an embedded script is being run */
@@ -14985,11 +16581,45 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
14985 trace_puts_args(argv); 16581 trace_puts_args(argv);
14986#endif 16582#endif
14987 16583
16584#if ENABLE_PLATFORM_MINGW32
16585 if (!dirarg && !login_sh && iflag) {
16586 char *cwd = getcwd(NULL, 0);
16587 if (cwd) {
16588 chdir(cwd);
16589 setpwd(NULL, 0);
16590 free(cwd);
16591 }
16592 }
16593
16594 if (title)
16595 set_title(title);
16596#endif
16597
14988 if (login_sh) { 16598 if (login_sh) {
14989 const char *hp; 16599 const char *hp;
14990 16600
16601#if ENABLE_PLATFORM_MINGW32
16602 if (!dirarg) {
16603 hp = lookupvar("HOME");
16604 if (hp == NULL || *hp == '\0')
16605 hp = xgetpwuid(getuid())->pw_dir;
16606 chdir(hp);
16607 setpwd(NULL, 0);
16608 }
16609#endif
16610
14991 state = 1; 16611 state = 1;
16612#if ENABLE_PLATFORM_MINGW32
16613 hp = concat_path_file(get_system_drive(), "/etc/profile");
16614 read_profile(hp);
16615 free((void *)hp);
16616
16617 hp = exe_relative_path("/etc/profile");
16618 read_profile(hp);
16619 free((void *)hp);
16620#else
14992 read_profile("/etc/profile"); 16621 read_profile("/etc/profile");
16622#endif
14993 state1: 16623 state1:
14994 state = 2; 16624 state = 2;
14995 hp = lookupvar("HOME"); 16625 hp = lookupvar("HOME");
@@ -14998,10 +16628,18 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
14998 } 16628 }
14999 state2: 16629 state2:
15000 state = 3; 16630 state = 3;
16631#if ENABLE_PLATFORM_MINGW32
16632 if (dirarg) {
16633 chdir(dirarg);
16634 setpwd(NULL, 0);
16635 }
16636#endif
15001 if (iflag 16637 if (iflag
16638#if ENABLE_PLATFORM_POSIX
15002#ifndef linux 16639#ifndef linux
15003 && getuid() == geteuid() && getgid() == getegid() 16640 && getuid() == geteuid() && getgid() == getegid()
15004#endif 16641#endif
16642#endif
15005 ) { 16643 ) {
15006 const char *shinit = lookupvar("ENV"); 16644 const char *shinit = lookupvar("ENV");
15007 if (shinit != NULL && *shinit != '\0') 16645 if (shinit != NULL && *shinit != '\0')
@@ -15026,7 +16664,11 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
15026 // ash -sc 'echo $-' 16664 // ash -sc 'echo $-'
15027 // continue reading input from stdin after running 'echo'. 16665 // continue reading input from stdin after running 'echo'.
15028 // bash does not do this: it prints "hBcs" and exits. 16666 // bash does not do this: it prints "hBcs" and exits.
16667#if !ENABLE_PLATFORM_MINGW32
15029 evalstring(minusc, EV_EXIT); 16668 evalstring(minusc, EV_EXIT);
16669#else
16670 evalstring(minusc, sflag ? 0 : EV_EXIT);
16671#endif
15030 } 16672 }
15031 16673
15032 if (sflag || minusc == NULL) { 16674 if (sflag || minusc == NULL) {
@@ -15074,6 +16716,1110 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
15074 /* NOTREACHED */ 16716 /* NOTREACHED */
15075} 16717}
15076 16718
16719#if ENABLE_PLATFORM_MINGW32
16720static void
16721forkshell_openhere(struct forkshell *fs)
16722{
16723 const char *p = fs->path;
16724 size_t len = strlen(p);
16725 int pip[2];
16726
16727 pip[0] = fs->fd[0];
16728 pip[1] = fs->fd[1];
16729
16730 TRACE(("ash: subshell: %s\n",__PRETTY_FUNCTION__));
16731
16732 close(pip[0]);
16733 ignoresig(SIGINT); //signal(SIGINT, SIG_IGN);
16734 ignoresig(SIGQUIT); //signal(SIGQUIT, SIG_IGN);
16735 ignoresig(SIGHUP); //signal(SIGHUP, SIG_IGN);
16736 ignoresig(SIGTSTP); //signal(SIGTSTP, SIG_IGN);
16737 signal(SIGPIPE, SIG_DFL);
16738 xwrite(pip[1], p, len);
16739 _exit_SUCCESS();
16740}
16741
16742static void
16743forkshell_evalbackcmd(struct forkshell *fs)
16744{
16745#if BASH_PROCESS_SUBST
16746 /* determine end of pipe used by parent (ip) and child (ic) */
16747 const int ctl = fs->fd[2];
16748 const int ip = (ctl == CTLTOPROC);
16749 const int ic = !(ctl == CTLTOPROC);
16750#else
16751 const int ip = 0;
16752 const int ic = 1;
16753#endif
16754 union node *n = fs->n;
16755 int pip[2];
16756
16757 pip[ip] = fs->fd[ip];
16758 pip[ic] = fs->fd[ic];
16759
16760 FORCEINTON;
16761 close(pip[ip]);
16762 if (pip[ic] != ic) {
16763 /*close(ic);*/
16764 dup2_or_raise(pip[ic], ic);
16765 close(pip[ic]);
16766 }
16767 eflag = 0;
16768 ifsfree();
16769 evaltreenr(n, EV_EXIT);
16770 /* NOTREACHED */
16771}
16772
16773static void
16774forkshell_evalsubshell(struct forkshell *fs)
16775{
16776 union node *n = fs->n;
16777 int flags = fs->flags;
16778
16779 TRACE(("ash: subshell: %s\n",__PRETTY_FUNCTION__));
16780 INTON;
16781 flags |= EV_EXIT;
16782 if (fs->mode)
16783 flags &= ~EV_TESTED;
16784 expredir(n->nredir.redirect);
16785 redirect(n->nredir.redirect, 0);
16786 evaltreenr(n->nredir.n, flags);
16787 /* never returns */
16788}
16789
16790static void
16791forkshell_evalpipe(struct forkshell *fs)
16792{
16793 union node *n = fs->n;
16794 int flags = fs->flags;
16795 int prevfd = fs->fd[2];
16796 int pip[2] = {fs->fd[0], fs->fd[1]};
16797
16798 TRACE(("ash: subshell: %s\n",__PRETTY_FUNCTION__));
16799 INTON;
16800 if (pip[1] >= 0) {
16801 close(pip[0]);
16802 }
16803 if (prevfd > 0) {
16804 dup2(prevfd, 0);
16805 close(prevfd);
16806 }
16807 if (pip[1] > 1) {
16808 dup2(pip[1], 1);
16809 close(pip[1]);
16810 }
16811 evaltreenr(n, flags);
16812}
16813
16814static void
16815forkshell_shellexec(struct forkshell *fs)
16816{
16817 int idx = fs->fd[0];
16818 char **argv = fs->argv;
16819 const char *path = fs->path;
16820
16821 FORCEINTON;
16822 shellexec(argv[0], argv, path, idx, TRUE);
16823}
16824
16825static void
16826forkshell_child(struct forkshell *fs)
16827{
16828 switch ( fs->fpid ) {
16829 case FS_OPENHERE:
16830 forkshell_openhere(fs);
16831 break;
16832 case FS_EVALBACKCMD:
16833 forkshell_evalbackcmd(fs);
16834 break;
16835 case FS_EVALSUBSHELL:
16836 forkshell_evalsubshell(fs);
16837 break;
16838 case FS_EVALPIPE:
16839 forkshell_evalpipe(fs);
16840 break;
16841 case FS_SHELLEXEC:
16842 forkshell_shellexec(fs);
16843 break;
16844 }
16845}
16846
16847/*
16848 * Reinitialise the builtin environment variables in varinit. Their
16849 * current settings have been copied from the parent in vartab. Look
16850 * these up using the names from varinit_data, copy the details from
16851 * vartab to varinit and replace the old copy in vartab with the new
16852 * one in varinit.
16853 *
16854 * Also reinitialise the function pointers and line number variable.
16855 */
16856static void
16857reinitvar(void)
16858{
16859 int i;
16860 const char *name;
16861 struct var **old;
16862
16863 for (i=0; i<ARRAY_SIZE(varinit); ++i) {
16864 if (i == LINENO_INDEX)
16865 name = "LINENO=";
16866 else if (i == FUNCNAME_INDEX)
16867 name = "FUNCNAME=";
16868 else
16869 name = varinit_data[i].var_text;
16870 if ((old = findvar(name)) != NULL) {
16871 varinit[i] = **old;
16872 *old = varinit+i;
16873 }
16874 varinit[i].var_func = varinit_data[i].var_func;
16875 }
16876 vlineno.var_text = linenovar;
16877 vfuncname.var_text = funcnamevar;
16878}
16879
16880static void
16881spawn_forkshell(struct forkshell *fs, struct job *jp, union node *n, int mode)
16882{
16883 struct forkshell *new;
16884 char buf[32];
16885 const char *argv[] = { "sh", "--fs", NULL, NULL };
16886 intptr_t ret;
16887
16888 new = forkshell_prepare(fs);
16889 if (new == NULL)
16890 goto fail;
16891
16892 new->mode = mode;
16893 new->nprocs = jp == NULL ? 0 : jp->nprocs;
16894#if JOBS_WIN32
16895 new->jpnull = jp == NULL;
16896#endif
16897 sprintf(buf, "%p", new->hMapFile);
16898 argv[2] = buf;
16899 ret = spawnve(P_NOWAIT, bb_busybox_exec_path, (char *const *)argv, NULL);
16900 CloseHandle(new->hMapFile);
16901 UnmapViewOfFile(new);
16902 if (ret == -1) {
16903 fail:
16904 if (jp)
16905 freejob(jp);
16906 ash_msg_and_raise_error("unable to spawn shell");
16907 }
16908 forkparent(jp, n, mode, (HANDLE)ret);
16909}
16910
16911/*
16912 * forkshell_prepare() and friends
16913 *
16914 * The sequence is as follows:
16915 * - funcblocksize is initialized
16916 * - forkshell_size(fs) is called to calculate the exact memory needed
16917 * - a new struct is allocated
16918 * - funcblock, funcstring, relocate are initialized from the new block
16919 * - forkshell_copy(fs) is called to copy recursively everything over
16920 * it will record all relocations along the way
16921 *
16922 * When this memory is mapped elsewhere, pointer fixup will be needed
16923 */
16924
16925/* redefine without test that fs_size is nonzero */
16926#undef SAVE_PTR
16927#undef SAVE_PTR2
16928#undef SAVE_PTR3
16929#define SAVE_PTR(dst,note,flag) {MARK_PTR(dst,note,flag);}
16930
16931static int align_len(const char *s)
16932{
16933 return s ? SHELL_ALIGN(strlen(s)+1) : 0;
16934}
16935
16936struct datasize {
16937 int funcblocksize;
16938 int funcstringsize;
16939};
16940
16941#define SLIST_SIZE_BEGIN(name,type) \
16942static struct datasize \
16943name(struct datasize ds, type *p) \
16944{ \
16945 while (p) { \
16946 ds.funcblocksize += sizeof(type);
16947 /* do something here with p */
16948#define SLIST_SIZE_END() \
16949 p = p->next; \
16950 } \
16951 return ds; \
16952}
16953
16954#define SLIST_COPY_BEGIN(name,type) \
16955static type * \
16956name(type *vp) \
16957{ \
16958 type *start; \
16959 type **vpp; \
16960 vpp = &start; \
16961 while (vp) { \
16962 *vpp = funcblock; \
16963 funcblock = (char *) funcblock + sizeof(type);
16964 /* do something here with vpp and vp */
16965#define SLIST_COPY_END() \
16966 SAVE_PTR((*vpp)->next, "(*vpp)->next", NO_FREE); \
16967 vp = vp->next; \
16968 vpp = &(*vpp)->next; \
16969 } \
16970 *vpp = NULL; \
16971 return start; \
16972}
16973
16974/*
16975 * struct var
16976 */
16977SLIST_SIZE_BEGIN(var_size,struct var)
16978ds.funcstringsize += align_len(p->var_text);
16979SLIST_SIZE_END()
16980
16981SLIST_COPY_BEGIN(var_copy,struct var)
16982(*vpp)->var_text = nodeckstrdup(vp->var_text);
16983(*vpp)->flags = vp->flags;
16984(*vpp)->var_func = NULL;
16985SAVE_PTR((*vpp)->var_text, xasprintf("(*vpp)->var_text '%s'", vp->var_text ?: "NULL"), FREE);
16986SLIST_COPY_END()
16987
16988/*
16989 * struct tblentry
16990 */
16991static struct datasize
16992tblentry_size(struct datasize ds, struct tblentry *tep)
16993{
16994 while (tep) {
16995 ds.funcblocksize += sizeof(struct tblentry) + align_len(tep->cmdname);
16996 /* CMDBUILTIN, e->param.cmd needs no pointer relocation */
16997 if (tep->cmdtype == CMDFUNCTION) {
16998 ds.funcblocksize += offsetof(struct funcnode, n);
16999 ds.funcblocksize = calcsize(ds.funcblocksize, &tep->param.func->n);
17000 }
17001 tep = tep->next;
17002 }
17003 return ds;
17004}
17005
17006static struct tblentry *
17007tblentry_copy(struct tblentry *tep)
17008{
17009 struct tblentry *start;
17010 struct tblentry **newp;
17011 int size;
17012
17013 newp = &start;
17014 while (tep) {
17015 *newp = funcblock;
17016 size = sizeof(struct tblentry) + align_len(tep->cmdname);
17017
17018 funcblock = (char *) funcblock + size;
17019 memcpy(*newp, tep, sizeof(struct tblentry)+strlen(tep->cmdname));
17020 switch (tep->cmdtype) {
17021 case CMDBUILTIN:
17022 /* Save index of builtin, not pointer; fixed by forkshell_init() */
17023 (*newp)->param.index = tep->param.cmd - builtintab;
17024 break;
17025 case CMDFUNCTION:
17026 (*newp)->param.func = funcblock;
17027 funcblock = (char *) funcblock + offsetof(struct funcnode, n);
17028 copynode(&tep->param.func->n);
17029 SAVE_PTR((*newp)->param.func, "param.func", NO_FREE);
17030 break;
17031 default:
17032 break;
17033 }
17034 SAVE_PTR((*newp)->next, xasprintf("cmdname '%s'", tep->cmdname), FREE);
17035 tep = tep->next;
17036 newp = &(*newp)->next;
17037 }
17038 *newp = NULL;
17039 return start;
17040}
17041
17042static struct datasize
17043cmdtable_size(struct datasize ds)
17044{
17045 int i;
17046 ds.funcblocksize += sizeof(struct tblentry *)*CMDTABLESIZE;
17047 for (i = 0; i < CMDTABLESIZE; i++)
17048 ds = tblentry_size(ds, cmdtable[i]);
17049 return ds;
17050}
17051
17052static struct tblentry **
17053cmdtable_copy(void)
17054{
17055 struct tblentry **new = funcblock;
17056 int i;
17057
17058 funcblock = (char *) funcblock + sizeof(struct tblentry *)*CMDTABLESIZE;
17059 for (i = 0; i < CMDTABLESIZE; i++) {
17060 new[i] = tblentry_copy(cmdtable[i]);
17061 SAVE_PTR(new[i], xasprintf("cmdtable[%d]", i), FREE);
17062 }
17063 return new;
17064}
17065
17066#if ENABLE_ASH_ALIAS
17067/*
17068 * struct alias
17069 */
17070SLIST_SIZE_BEGIN(alias_size,struct alias)
17071ds.funcstringsize += align_len(p->name);
17072ds.funcstringsize += align_len(p->val);
17073SLIST_SIZE_END()
17074
17075SLIST_COPY_BEGIN(alias_copy,struct alias)
17076(*vpp)->name = nodeckstrdup(vp->name);
17077(*vpp)->val = nodeckstrdup(vp->val);
17078(*vpp)->flag = vp->flag;
17079SAVE_PTR((*vpp)->name, xasprintf("(*vpp)->name '%s'", vp->name ?: "NULL"), FREE);
17080SAVE_PTR((*vpp)->val, xasprintf("(*vpp)->val '%s'", vp->val ?: "NULL"), FREE);
17081SLIST_COPY_END()
17082
17083static struct datasize
17084atab_size(struct datasize ds)
17085{
17086 int i;
17087 ds.funcblocksize += sizeof(struct alias *)*ATABSIZE;
17088 for (i = 0; i < ATABSIZE; i++)
17089 ds = alias_size(ds, atab[i]);
17090 return ds;
17091}
17092
17093static struct alias **
17094atab_copy(void)
17095{
17096 struct alias **new = funcblock;
17097 int i;
17098
17099 funcblock = (char *) funcblock + sizeof(struct alias *)*ATABSIZE;
17100 for (i = 0; i < ATABSIZE; i++) {
17101 new[i] = alias_copy(atab[i]);
17102 SAVE_PTR(new[i], xasprintf("atab[%d]", i), FREE);
17103 }
17104 return new;
17105}
17106#endif
17107
17108/*
17109 * char **
17110 */
17111static struct datasize
17112argv_size(struct datasize ds, char **p)
17113{
17114 if (p) {
17115 while (*p) {
17116 ds.funcblocksize += sizeof(char *);
17117 ds.funcstringsize += align_len(*p);
17118 p++;
17119 }
17120 // Allow two extra elements for tryexec().
17121 ds.funcblocksize += 3 * sizeof(char *);
17122 }
17123 return ds;
17124}
17125
17126static char **
17127argv_copy(char **p)
17128{
17129 char **new, **start = funcblock;
17130#if FORKSHELL_DEBUG
17131 int i = 0;
17132#endif
17133
17134 if (p) {
17135 // Allow two extra elements for tryexec().
17136 funcblock = (char *) funcblock + 2 * sizeof(char *);
17137 while (*p) {
17138 new = funcblock;
17139 funcblock = (char *) funcblock + sizeof(char *);
17140 *new = nodeckstrdup(*p);
17141 SAVE_PTR(*new, xasprintf("argv[%d] '%s'", i++, *p), FREE);
17142 p++;
17143 }
17144 new = funcblock;
17145 funcblock = (char *) funcblock + sizeof(char *);
17146 *new = NULL;
17147 return start + 2;
17148 }
17149 return NULL;
17150}
17151
17152#if MAX_HISTORY
17153static struct datasize
17154history_size(struct datasize ds)
17155{
17156 int i;
17157 line_input_t *st = line_input_state;
17158
17159 ds.funcblocksize += sizeof(char *) * st->cnt_history;
17160 for (i = 0; i < st->cnt_history; i++) {
17161 ds.funcstringsize += align_len(st->history[i]);
17162 }
17163 return ds;
17164}
17165
17166static char **
17167history_copy(void)
17168{
17169 line_input_t *st = line_input_state;
17170 char **new = funcblock;
17171 int i;
17172
17173 funcblock = (char *)funcblock + sizeof(char *) * st->cnt_history;
17174 for (i = 0; i < st->cnt_history; i++) {
17175 new[i] = nodeckstrdup(st->history[i]);
17176 SAVE_PTR(new[i],
17177 xasprintf("history[%d] '%s'", i, st->history[i]), FREE);
17178 }
17179 return new;
17180}
17181#endif
17182
17183#if JOBS_WIN32
17184/*
17185 * struct procstat
17186 */
17187static struct datasize
17188procstat_size(struct datasize ds, int nj)
17189{
17190 struct job *jp = jobtab + nj;
17191
17192 if (jp->ps != &jp->ps0)
17193 ds.funcblocksize += sizeof(struct procstat) * jp->nprocs;
17194
17195 for (int i = 0; i < jp->nprocs; i++)
17196 ds.funcstringsize += align_len(jp->ps[i].ps_cmd);
17197
17198 return ds;
17199}
17200
17201static struct procstat *
17202procstat_copy(int nj)
17203{
17204 struct job *jp = jobtab + nj;
17205 struct procstat *new = funcblock;
17206
17207 funcblock = (char *)funcblock + sizeof(struct procstat) * jp->nprocs;
17208 memcpy(new, jp->ps, sizeof(struct procstat) * jp->nprocs);
17209
17210 for (int i = 0; i < jp->nprocs; i++) {
17211 new[i].ps_cmd = nodeckstrdup(jp->ps[i].ps_cmd);
17212 SAVE_PTR(new[i].ps_cmd,
17213 xasprintf("jobtab[%d].ps[%d].ps_cmd '%s'",
17214 nj, i, jp->ps[i].ps_cmd), FREE);
17215 }
17216 return new;
17217}
17218
17219/*
17220 * struct jobs
17221 */
17222static struct datasize
17223jobtab_size(struct datasize ds)
17224{
17225 ds.funcblocksize += sizeof(struct job) * njobs;
17226 for (int i = 0; i < njobs; i++) {
17227 if (jobtab[i].used)
17228 ds = procstat_size(ds, i);
17229 }
17230 return ds;
17231}
17232
17233static struct job *
17234jobtab_copy(void)
17235{
17236 struct job *new = funcblock;
17237 int i;
17238
17239 funcblock = (char *)funcblock + sizeof(struct job) * njobs;
17240 memcpy(new, jobtab, sizeof(struct job) * njobs);
17241
17242 for (i = 0; i < njobs; i++) {
17243 if (!jobtab[i].used)
17244 continue;
17245
17246 if (jobtab[i].ps == &jobtab[i].ps0) {
17247 new[i].ps0.ps_cmd = nodeckstrdup(jobtab[i].ps0.ps_cmd);
17248 SAVE_PTR(new[i].ps0.ps_cmd,
17249 xasprintf("jobtab[%d].ps0.ps_cmd '%s'",
17250 i, jobtab[i].ps0.ps_cmd), FREE);
17251 new[i].ps = &new[i].ps0;
17252 } else if (jobtab[i].nprocs) {
17253 new[i].ps = procstat_copy(i);
17254 } else {
17255 new[i].ps = NULL;
17256 }
17257 SAVE_PTR(new[i].ps, xasprintf("jobtab[%d].ps", i), FREE);
17258
17259 if (jobtab[i].prev_job) {
17260 new[i].prev_job = new + (jobtab[i].prev_job - jobtab);
17261 SAVE_PTR(new[i].prev_job,
17262 xasprintf("jobtab[%d].prev_job", i), FREE);
17263 }
17264 }
17265 return new;
17266}
17267#endif
17268
17269/*
17270 * struct redirtab
17271 */
17272static int
17273redirtab_size(int funcblocksize, struct redirtab *rdtp)
17274{
17275 while (rdtp) {
17276 funcblocksize += sizeof(*rdtp)+sizeof(rdtp->two_fd[0])*rdtp->pair_count;
17277 rdtp = rdtp->next;
17278 }
17279 return funcblocksize;
17280}
17281
17282static struct redirtab *
17283redirtab_copy(struct redirtab *rdtp)
17284{
17285 struct redirtab *start;
17286 struct redirtab **vpp;
17287
17288 vpp = &start;
17289 while (rdtp) {
17290 int size = sizeof(*rdtp)+sizeof(rdtp->two_fd[0])*rdtp->pair_count;
17291 *vpp = funcblock;
17292 funcblock = (char *) funcblock + size;
17293 memcpy(*vpp, rdtp, size);
17294 SAVE_PTR((*vpp)->next, "(*vpp)->next", NO_FREE);
17295 rdtp = rdtp->next;
17296 vpp = &(*vpp)->next;
17297 }
17298 *vpp = NULL;
17299 return start;
17300}
17301
17302static struct datasize
17303globals_var_size(struct datasize ds)
17304{
17305 int i;
17306
17307 ds.funcblocksize += sizeof(struct globals_var);
17308 ds.funcstringsize += align_len(funcname);
17309 ds = argv_size(ds, shellparam.p);
17310 ds.funcblocksize = redirtab_size(ds.funcblocksize, redirlist);
17311 for (i = 0; i < VTABSIZE; i++)
17312 ds = var_size(ds, vartab[i]);
17313 return ds;
17314}
17315
17316#undef funcname
17317#undef shellparam
17318#undef redirlist
17319#undef vartab
17320static struct globals_var *
17321globals_var_copy(void)
17322{
17323 int i;
17324 struct globals_var *gvp, *new;
17325
17326 gvp = ash_ptr_to_globals_var;
17327 new = funcblock;
17328 funcblock = (char *) funcblock + sizeof(struct globals_var);
17329 memcpy(new, gvp, sizeof(struct globals_var));
17330
17331 new->funcname = nodeckstrdup(gvp->funcname);
17332 SAVE_PTR(new->funcname, xasprintf("funcname '%s'", gvp->funcname ?: "NULL"), FREE);
17333
17334 /* shparam */
17335 new->shellparam.malloced = 0;
17336 new->shellparam.p = argv_copy(gvp->shellparam.p);
17337 SAVE_PTR(new->shellparam.p, "shellparam.p", NO_FREE);
17338
17339 new->redirlist = redirtab_copy(gvp->redirlist);
17340 SAVE_PTR(new->redirlist, "redirlist", NO_FREE);
17341
17342 for (i = 0; i < VTABSIZE; i++) {
17343 new->vartab[i] = var_copy(gvp->vartab[i]);
17344 SAVE_PTR(new->vartab[i], xasprintf("vartab[%d]", i), FREE);
17345 }
17346
17347 return new;
17348}
17349
17350static struct datasize
17351globals_misc_size(struct datasize ds)
17352{
17353 ds.funcblocksize += sizeof(struct globals_misc);
17354 ds.funcstringsize += align_len(minusc);
17355 if (curdir != nullstr)
17356 ds.funcstringsize += align_len(curdir);
17357 if (physdir != nullstr)
17358 ds.funcstringsize += align_len(physdir);
17359 ds.funcstringsize += align_len(arg0);
17360 ds.funcstringsize += align_len(commandname);
17361 for (int i = 0; i < ARRAY_SIZE(trap); i++)
17362 ds.funcstringsize += align_len(trap[i]);
17363 return ds;
17364}
17365
17366#undef minusc
17367#undef curdir
17368#undef physdir
17369#undef arg0
17370#undef commandname
17371#undef g_parsefile
17372#undef basepf
17373#undef nullstr
17374#undef trap
17375static struct globals_misc *
17376globals_misc_copy(void)
17377{
17378 struct globals_misc *p = ash_ptr_to_globals_misc;
17379 struct globals_misc *new = funcblock;
17380
17381 funcblock = (char *) funcblock + sizeof(struct globals_misc);
17382 memcpy(new, p, sizeof(struct globals_misc));
17383
17384 new->minusc = nodeckstrdup(p->minusc);
17385 new->curdir = p->curdir != p->nullstr ? nodeckstrdup(p->curdir) : new->nullstr;
17386 new->physdir = p->physdir != p->nullstr ? nodeckstrdup(p->physdir) : new->nullstr;
17387 new->arg0 = nodeckstrdup(p->arg0);
17388 new->commandname = nodeckstrdup(p->commandname);
17389 SAVE_PTR(new->minusc, xasprintf("minusc '%s'", p->minusc ?: "NULL"), FREE);
17390 SAVE_PTR(new->curdir,
17391 xasprintf("curdir '%s'", new->curdir ?: "NULL"), FREE);
17392 SAVE_PTR(new->physdir,
17393 xasprintf("physdir '%s'", new->physdir ?: "NULL"), FREE);
17394 SAVE_PTR(new->arg0, xasprintf("arg0 '%s'", p->arg0 ?: "NULL"), FREE);
17395 SAVE_PTR(new->commandname,
17396 xasprintf("commandname '%s'", p->commandname ?: "NULL"), FREE);
17397 for (int i = 0; i < ARRAY_SIZE(p->trap); i++) {
17398 new->trap[i] = nodeckstrdup(p->trap[i]);
17399 SAVE_PTR(new->trap[i], xasprintf("trap[%d]", i), FREE);
17400 }
17401 new->g_parsefile = NULL;
17402 memset(&new->basepf, 0, sizeof(struct parsefile));
17403 return new;
17404}
17405
17406static struct datasize
17407forkshell_size(struct forkshell *fs)
17408{
17409 struct datasize ds = {0, 0};
17410
17411 ds.funcstringsize += align_len(fs->path);
17412 if (fs->fpid == FS_OPENHERE)
17413 return ds;
17414
17415 ds = globals_misc_size(ds);
17416 ds = globals_var_size(ds);
17417 ds = cmdtable_size(ds);
17418
17419 ds.funcblocksize = calcsize(ds.funcblocksize, fs->n);
17420 ds = argv_size(ds, fs->argv);
17421
17422 if ((ENABLE_ASH_ALIAS || MAX_HISTORY || JOBS_WIN32) &&
17423 fs->fpid != FS_SHELLEXEC) {
17424#if ENABLE_ASH_ALIAS
17425 ds = atab_size(ds);
17426#endif
17427#if MAX_HISTORY
17428 if (line_input_state)
17429 ds = history_size(ds);
17430#endif
17431#if JOBS_WIN32
17432 ds = jobtab_size(ds);
17433#endif
17434 }
17435 return ds;
17436}
17437
17438static void
17439forkshell_copy(struct forkshell *fs, struct forkshell *new)
17440{
17441 memcpy(new, fs, sizeof(struct forkshell)); /* non-pointer stuff */
17442
17443 new->path = nodeckstrdup(fs->path);
17444 SAVE_PTR(new->path, xasprintf("path '%s'", fs->path ?: "NULL"), FREE);
17445 if (fs->fpid == FS_OPENHERE)
17446 return;
17447
17448 new->gmp = globals_misc_copy();
17449 new->gvp = globals_var_copy();
17450 new->cmdtable = cmdtable_copy();
17451 SAVE_PTR(new->gmp, "gmp", NO_FREE);
17452 SAVE_PTR(new->gvp, "gvp", NO_FREE);
17453 SAVE_PTR(new->cmdtable, "cmdtable", NO_FREE);
17454
17455 new->n = copynode(fs->n);
17456 new->argv = argv_copy(fs->argv);
17457 SAVE_PTR(new->n, "n", NO_FREE);
17458 SAVE_PTR(new->argv, "argv", NO_FREE);
17459
17460 if ((ENABLE_ASH_ALIAS || MAX_HISTORY || JOBS_WIN32) &&
17461 fs->fpid != FS_SHELLEXEC) {
17462#if ENABLE_ASH_ALIAS
17463 new->atab = atab_copy();
17464 SAVE_PTR(new->atab, "atab", NO_FREE);
17465#endif
17466#if MAX_HISTORY
17467 if (line_input_state) {
17468 new->history = history_copy();
17469 SAVE_PTR(new->history, "history", NO_FREE);
17470 new->cnt_history = line_input_state->cnt_history;
17471 }
17472#endif
17473#if JOBS_WIN32
17474 if (njobs) {
17475 new->jobtab = jobtab_copy();
17476 SAVE_PTR(new->jobtab, "jobtab", NO_FREE);
17477 new->njobs = njobs;
17478 if (curjob) {
17479 new->curjob = new->jobtab + (curjob - jobtab);
17480 SAVE_PTR(new->curjob, "curjob", NO_FREE);
17481 }
17482 }
17483#endif
17484 }
17485}
17486
17487#if FORKSHELL_DEBUG
17488#define NUM_BLOCKS FUNCSTRING
17489enum {GMP, GVP, CMDTABLE, NODE, ARGV, ATAB, HISTORY, JOBTAB, FUNCSTRING};
17490
17491/* fp0 and notes can each be NULL */
17492static void
17493forkshell_print(FILE *fp0, struct forkshell *fs, const char **notes)
17494{
17495 FILE *fp;
17496 void *lfuncblock;
17497 char *lfuncstring;
17498 char *lrelocate;
17499 char *s;
17500 int count, i, total, bitmapsize;
17501 int size[NUM_BLOCKS];
17502 char *lptr[NUM_BLOCKS+1];
17503 const char *fsname[] = {
17504 "FS_OPENHERE",
17505 "FS_EVALBACKCMD",
17506 "FS_EVALSUBSHELL",
17507 "FS_EVALPIPE",
17508 "FS_SHELLEXEC"
17509 };
17510
17511 if (fp0 != NULL) {
17512 fp = fp0;
17513 }
17514 else {
17515 char name[64];
17516 static int num = 0;
17517
17518 sprintf(name, "fs_%d_%03d.out", getpid(), ++num % 100);
17519 if ((fp=fopen(name, "w")) == NULL)
17520 return;
17521 }
17522
17523 bitmapsize = (fs->relocatesize + 7)/8;
17524 total = sizeof(struct forkshell) + fs->funcblocksize +
17525 fs->funcstringsize + bitmapsize;
17526 fprintf(fp, "total size %6d = %d + %d + %d + %d = %d\n",
17527 fs->size + bitmapsize,
17528 (int)sizeof(struct forkshell), fs->funcblocksize,
17529 fs->funcstringsize, bitmapsize, total);
17530
17531 lfuncblock = (char *)(fs + 1);
17532 lfuncstring = (char *)lfuncblock + fs->funcblocksize;
17533 lrelocate = (char *)lfuncstring + fs->funcstringsize;
17534
17535 /* funcblocksize is zero for FS_OPENHERE */
17536 if (fs->funcblocksize != 0) {
17537 /* Depending on the configuration and the type of forkshell
17538 * some items may not be present. */
17539 lptr[FUNCSTRING] = lfuncstring;
17540#if JOBS_WIN32
17541 lptr[JOBTAB] = fs->jobtab ? (char *)fs->jobtab : lptr[FUNCSTRING];
17542#else
17543 lptr[JOBTAB] = lptr[FUNCSTRING];
17544#endif
17545#if MAX_HISTORY
17546 lptr[HISTORY] = fs->history ? (char *)fs->history : lptr[JOBTAB];
17547#else
17548 lptr[HISTORY] = lptr[JOBTAB];
17549#endif
17550 lptr[ATAB] = IF_ASH_ALIAS(fs->atab ? (char *)fs->atab :) lptr[HISTORY];
17551 lptr[ARGV] = fs->argv ? (char *)fs->argv : lptr[ATAB];
17552 lptr[NODE] = fs->n ? (char *)fs->n : lptr[ARGV];
17553 lptr[CMDTABLE] = (char *)fs->cmdtable;
17554 lptr[GVP] = (char *)fs->gvp;
17555 lptr[GMP] = (char *)fs->gmp;
17556
17557 fprintf(fp, "funcblocksize %6d = ", fs->funcblocksize);
17558 total = 0;
17559 for (i=0; i<NUM_BLOCKS; ++i) {
17560 size[i] = (int)(lptr[i+1] - lptr[i]);
17561 total += size[i];
17562 fprintf(fp, "%d %c ", size[i], i == NUM_BLOCKS - 1 ? '=' : '+');
17563 }
17564 fprintf(fp, "%d\n\n", total);
17565 }
17566 else {
17567 fprintf(fp, "\n");
17568 }
17569
17570 fprintf(fp, "%s\n\n", fsname[fs->fpid]);
17571 fprintf(fp, "--- relocate ---\n");
17572 count = 0;
17573 for (i = 0; i < fs->relocatesize; ++i) {
17574 if (lrelocate[i/8] & (1 << i % 8)) {
17575 char **ptr = (char **)((char *)fs + i * sizeof(char *));
17576 fprintf(fp, "%p %p %s\n", ptr, *ptr,
17577 notes && notes[i] ? notes[i] : "");
17578 ++count;
17579 }
17580 }
17581 fprintf(fp, "--- %d relocations ---\n\n", count);
17582
17583 fprintf(fp, "--- funcstring ---\n");
17584 count = 0;
17585 s = lfuncstring;
17586 while (s-lfuncstring < fs->funcstringsize) {
17587 if (!*s) {
17588 ++s;
17589 continue;
17590 }
17591 fprintf(fp, "%p '%s'\n", s, s);
17592 s += strlen(s)+1;
17593 ++count;
17594 }
17595 fprintf(fp, "--- %d strings ---\n", count);
17596
17597 if (fp0 == NULL)
17598 fclose(fp);
17599}
17600#endif
17601
17602static struct forkshell *
17603forkshell_prepare(struct forkshell *fs)
17604{
17605 struct forkshell *new;
17606 struct datasize ds;
17607 int size, relocatesize, bitmapsize;
17608 HANDLE h;
17609 SECURITY_ATTRIBUTES sa;
17610#if FORKSHELL_DEBUG
17611 char *relocate;
17612 char name[64];
17613 FILE *fp;
17614 static int num = 0;
17615#endif
17616
17617 /* calculate size of structure, funcblock and funcstring */
17618 ds = forkshell_size(fs);
17619 size = sizeof(struct forkshell) + ds.funcblocksize + ds.funcstringsize;
17620 relocatesize = (sizeof(struct forkshell) + ds.funcblocksize)/sizeof(char *);
17621 bitmapsize = (relocatesize + 7)/8;
17622
17623 /* Allocate shared memory region */
17624 memset(&sa, 0, sizeof(sa));
17625 sa.nLength = sizeof(sa);
17626 sa.lpSecurityDescriptor = NULL;
17627 sa.bInheritHandle = TRUE;
17628 h = CreateFileMapping(INVALID_HANDLE_VALUE, &sa, PAGE_READWRITE, 0,
17629 size+bitmapsize, NULL);
17630
17631 /* Initialise pointers */
17632 new = (struct forkshell *)MapViewOfFile(h, FILE_MAP_WRITE, 0,0, 0);
17633 if (new == NULL)
17634 return NULL;
17635 fs_size = size;
17636 fs_start = new;
17637 funcblock = (char *)(new + 1);
17638 funcstring_end = (char *)new + size;
17639#if FORKSHELL_DEBUG
17640 fs_funcstring = (char *)new + sizeof(struct forkshell) + ds.funcblocksize;
17641 relocate = (char *)new + size;
17642 annot = (const char **)xzalloc(sizeof(char *)*relocatesize);
17643 annot_free = xzalloc(relocatesize);
17644#endif
17645
17646 /* Now pack them all */
17647 forkshell_copy(fs, new);
17648
17649 /* Finish it up */
17650 new->size = size;
17651 new->relocatesize = relocatesize;
17652 new->old_base = (char *)new;
17653 new->hMapFile = h;
17654#if FORKSHELL_DEBUG
17655 sprintf(name, "fs_%d_%03d.out", getpid(), ++num % 100);
17656 if ((fp=fopen(name, "w")) != NULL) {
17657 int i;
17658
17659 new->funcblocksize = (char *)funcblock - (char *)(new + 1);
17660 new->funcstringsize = (char *)new + size - funcstring_end;
17661
17662 /* perform some sanity checks on pointers */
17663 fprintf(fp, "forkshell %p %6d\n", new, (int)sizeof(*new));
17664 fprintf(fp, "funcblock %p %6d\n", new+1, new->funcblocksize);
17665 fprintf(fp, "funcstring %p %6d\n", funcstring_end,
17666 new->funcstringsize);
17667 if ((char *)funcblock != funcstring_end)
17668 fprintf(fp, " funcstring != end funcblock + 1 %p\n", funcblock);
17669 fprintf(fp, "relocate %p %6d\n\n", relocate, bitmapsize);
17670
17671 forkshell_print(fp, new, annot);
17672
17673 for (i = 0; i < relocatesize; ++i) {
17674 if (annot_free[i]) {
17675 free((void *)annot[i]);
17676 }
17677 }
17678 free(annot);
17679 free(annot_free);
17680 annot = NULL;
17681 fclose(fp);
17682 }
17683#endif
17684 return new;
17685}
17686
17687#undef trap_ptr
17688static void
17689forkshell_init(const char *idstr)
17690{
17691 struct forkshell *fs;
17692 void *map_handle;
17693 HANDLE h;
17694 int i;
17695 char **ptr;
17696 char *lrelocate;
17697
17698 if (sscanf(idstr, "%p", &map_handle) != 1)
17699 return;
17700
17701 h = (HANDLE)map_handle;
17702 fs = (struct forkshell *)MapViewOfFile(h, FILE_MAP_WRITE, 0,0, 0);
17703 if (!fs)
17704 return;
17705
17706 /* this memory can't be freed */
17707 sticky_mem_start = fs;
17708 sticky_mem_end = (char *) fs + fs->size;
17709
17710 /* pointer fixup */
17711 lrelocate = (char *)fs + fs->size;
17712 for (i = 0; i < fs->relocatesize; i++) {
17713 if (lrelocate[i/8] & (1 << i % 8)) {
17714 ptr = (char **)((char *)fs + i * sizeof(char *));
17715 if (*ptr)
17716 *ptr = (char *)fs + (*ptr - fs->old_base);
17717 }
17718 }
17719
17720 if (fs->fpid == FS_OPENHERE)
17721 goto end;
17722
17723 /* Now fix up stuff that can't be transferred */
17724 for (i = 0; i < CMDTABLESIZE; i++) {
17725 struct tblentry *e = fs->cmdtable[i];
17726 while (e) {
17727 if (e->cmdtype == CMDBUILTIN)
17728 e->param.cmd = builtintab + e->param.index;
17729 e = e->next;
17730 }
17731 }
17732 fs->gmp->trap_ptr = fs->gmp->trap;
17733
17734 /* from init() */
17735 fs->gmp->basepf.next_to_pgetc = fs->gmp->basepf.buf = ckzalloc(IBUFSIZ);
17736 fs->gmp->basepf.linno = 1;
17737 fs->gmp->g_parsefile = &fs->gmp->basepf;
17738
17739 /* Set global variables */
17740 ASSIGN_CONST_PTR(&ash_ptr_to_globals_misc, fs->gmp);
17741 ASSIGN_CONST_PTR(&ash_ptr_to_globals_var, fs->gvp);
17742 cmdtable = fs->cmdtable;
17743#if ENABLE_ASH_ALIAS
17744 atab = fs->atab; /* will be NULL for FS_SHELLEXEC */
17745#endif
17746#if MAX_HISTORY
17747 if (fs->cnt_history) {
17748 line_input_state = new_line_input_t(FOR_SHELL);
17749 line_input_state->cnt_history = fs->cnt_history;
17750 for (i = 0; i < line_input_state->cnt_history; i++)
17751 line_input_state->history[i] = fs->history[i];
17752 }
17753#endif
17754#if JOBS_WIN32
17755 jobtab = fs->jobtab;
17756 njobs = fs->njobs;
17757 curjob = fs->curjob;
17758#endif
17759
17760 CLEAR_RANDOM_T(&random_gen); /* or else $RANDOM repeats in child */
17761
17762 reinitvar();
17763
17764 if (setjmp(main_handler.loc)) {
17765 exitreset();
17766 exitshell();
17767 }
17768 exception_handler = &main_handler;
17769
17770 shlvl++;
17771 if (fs->mode == FORK_BG) {
17772 SetConsoleCtrlHandler(NULL, TRUE);
17773 if (fs->nprocs == 0) {
17774 close(0);
17775 if (open(bb_dev_null, O_RDONLY) != 0)
17776 ash_msg_and_raise_perror("can't open '%s'", bb_dev_null);
17777 }
17778 }
17779 else {
17780 SetConsoleCtrlHandler(ctrl_handler, TRUE);
17781 }
17782
17783 if (fs->n && fs->n->type == NCMD /* is it single cmd? */
17784 /* && n->ncmd.args->type == NARG - always true? */
17785 && fs->n->ncmd.args && strcmp(fs->n->ncmd.args->narg.text, "trap") == 0
17786 && fs->n->ncmd.args->narg.next == NULL /* "trap" with no arguments */
17787 /* && n->ncmd.args->narg.backquote == NULL - do we need to check this? */
17788 ) {
17789 TRACE(("Trap hack\n"));
17790 /* Save trap handler strings for trap builtin to print */
17791 fs->gmp->trap_ptr = xmemdup(fs->gmp->trap, sizeof(fs->gmp->trap));
17792 /* Fall through into clearing traps */
17793 }
17794 clear_traps();
17795#if JOBS_WIN32
17796 /* do job control only in root shell */
17797 jobctl = 0;
17798
17799 if (fs->n && fs->n->type == NCMD && fs->n->ncmd.args &&
17800 strcmp(fs->n->ncmd.args->narg.text, "jobs") == 0) {
17801 TRACE(("Job hack\n"));
17802 if (!fs->jpnull)
17803 freejob(curjob);
17804 goto end;
17805 }
17806 for (struct job *jp = curjob; jp; jp = jp->prev_job)
17807 freejob(jp);
17808#endif
17809 end:
17810 forkshell_child(fs);
17811}
17812
17813#undef free
17814static void
17815sticky_free(void *base)
17816{
17817 if (base >= sticky_mem_start && base < sticky_mem_end)
17818 return;
17819 free(base);
17820}
17821#endif
17822
15077/*- 17823/*-
15078 * Copyright (c) 1989, 1991, 1993, 1994 17824 * Copyright (c) 1989, 1991, 1993, 1994
15079 * The Regents of the University of California. All rights reserved. 17825 * The Regents of the University of California. All rights reserved.
generated by cgit v1.2.3-55-g6feb (git 2.39.1) at 2025-11-23 13:35:28 +0000