1) sync with dash_0.5.2-7

2) but expand PS# as config option
3) correct kill error message again
4) remove show "line number" for interactive run (patch pending for dash)

1 files changed, 94 insertions, 59 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 5f859a1fb..5f6f7c6d3 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -276,16 +276,6 @@ static void forceinton(void)
         })
 #endif /* CONFIG_ASH_OPTIMIZE_FOR_SIZE */
 
-/*
- * BSD setjmp saves the signal mask, which violates ANSI C and takes time,
- * so we use _setjmp instead.
- */
-
-#if defined(BSD) && !defined(__SVR4) && !defined(__GLIBC__)
-#define setjmp(jmploc)  _setjmp(jmploc)
-#define longjmp(jmploc, val)    _longjmp(jmploc, val)
-#endif
-
 /*      $NetBSD: expand.h,v 1.13 2002/11/24 22:35:40 christos Exp $     */
 
 struct strlist {
@@ -1700,9 +1690,11 @@ init(void)
       {
               char **envp;
               char ppid[32];
+              const char *p;
+              struct stat st1, st2;
 
               initvar();
-              for (envp = environ ; *envp ; envp++) {
+              for (envp = environ ; envp && *envp ; envp++) {
                       if (strchr(*envp, '=')) {
                               setvareq(*envp, VEXPORT|VTEXTFIXED);
                       }
@@ -1710,7 +1702,13 @@ init(void)
 
               snprintf(ppid, sizeof(ppid), "%d", (int) getppid());
               setvar("PPID", ppid, 0);
-              setpwd(0, 0);
+
+              p = lookupvar("PWD");
+              if (p)
+              if (*p != '/' || stat(p, &st1) || stat(".", &st2) ||
+                  st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+                      p = 0;
+              setpwd(p, 0);
       }
 }
 
@@ -2300,9 +2298,7 @@ cdcmd(int argc, char **argv)
                 dest = bltinlookup(homestr);
         else if (dest[0] == '-' && dest[1] == '\0') {
                 dest = bltinlookup("OLDPWD");
-                if ( !dest ) goto out;
                 flags |= CD_PRINT;
-                goto step7;
         }
         if (!dest)
                 dest = nullstr;
@@ -2563,20 +2559,17 @@ onint(void) {
 static void
 exvwarning(const char *msg, va_list ap)
 {
-        FILE *errs;
-        const char *name;
-        const char *fmt;
+         FILE *errs;
 
-        errs = stderr;
-        name = arg0;
-        fmt = "%s: ";
-        if (commandname) {
-                name = commandname;
-                fmt = "%s: %d: ";
-        }
-        fprintf(errs, fmt, name, startlinno);
-        vfprintf(errs, msg, ap);
-        outcslow('\n', errs);
+         errs = stderr;
+         fprintf(errs, "%s: ", arg0);
+         if (commandname) {
+                 const char *fmt = (!iflag || parsefile->fd) ?
+                                        "%s: %d: " : "%s: ";
+                 fprintf(errs, fmt, commandname, startlinno);
+         }
+         vfprintf(errs, msg, ap);
+         outcslow('\n', errs);
 }
 
 /*
@@ -3201,6 +3194,12 @@ isassignment(const char *p)
         return *q == '=';
 }
 
+#ifdef CONFIG_ASH_EXPAND_PRMT
+static const char *expandstr(const char *ps);
+#else
+#define expandstr(s) s
+#endif
+
 /*
  * Execute a simple command.
  */
@@ -3249,7 +3248,7 @@ evalcommand(union node *cmd, int flags)
                 struct strlist **spp;
 
                 spp = arglist.lastp;
-                if (pseudovarflag && isassignment(argp->narg.text)) 
+                if (pseudovarflag && isassignment(argp->narg.text))
                         expandarg(argp, &arglist, EXP_VARTILDE);
                 else
                         expandarg(argp, &arglist, EXP_FULL | EXP_TILDE);
@@ -3296,7 +3295,7 @@ evalcommand(union node *cmd, int flags)
                 const char *p = " %s";
 
                 p++;
-                dprintf(preverrout_fd, p, ps4val());
+                dprintf(preverrout_fd, p, expandstr(ps4val()));
 
                 sp = varlist.list;
                 for(n = 0; n < 2; n++) {
@@ -4595,11 +4594,12 @@ expandarg(union node *arg, struct arglist *arglist, int flag)
         ifsfirst.next = NULL;
         ifslastp = NULL;
         argstr(arg->narg.text, flag);
+        p = _STPUTC('\0', expdest);
+        expdest = p - 1;
         if (arglist == NULL) {
                 return;                 /* here document expanded */
         }
-        STPUTC('\0', expdest);
-        p = grabstackstr(expdest);
+        p = grabstackstr(p);
         exparg.lastp = &exparg.list;
         /*
          * TODO - EXP_REDIR
@@ -5355,9 +5355,12 @@ param:
                         size_t partlen;
 
                         partlen = strlen(p);
-
                         len += partlen;
-                        if (len > partlen && sep) {
+
+                        if (!(subtype == VSPLUS || subtype == VSLENGTH))
+                                memtodest(p, partlen, syntax, quotes);
+
+                        if (*ap && sep) {
                                 char *q;
 
                                 len++;
@@ -5370,9 +5373,6 @@ param:
                                 STPUTC(sep, q);
                                 expdest = q;
                         }
-
-                        if (!(subtype == VSPLUS || subtype == VSLENGTH))
-                                memtodest(p, partlen, syntax, quotes);
                 }
                 return len;
         case '0':
@@ -6603,10 +6603,12 @@ usage:
                 if (**argv == '%') {
                         jp = getjob(*argv, 0);
                         pid = -jp->ps[0].pid;
-                } else
-                        pid = number(*argv);
+                } else {
+                        pid = **argv == '-' ?
+                                -number(*argv + 1) : number(*argv);
+                }
                 if (kill(pid, signo) != 0) {
-                        sh_warnx("kill %d: %s", pid, errmsg(errno, NULL));
+                        sh_warnx("(%d) - %m", pid);
                         i = 1;
                 }
         } while (*++argv);
@@ -7621,11 +7623,10 @@ cmdputs(const char *s)
         char *nextc;
         int subtype = 0;
         int quoted = 0;
-        static const char *const vstype[16] = {
-                nullstr, "}", "-", "+", "?", "=",
-                "%", "%%", "#", "##", nullstr
+        static const char vstype[VSTYPE + 1][4] = {
+                "", "}", "-", "+", "?", "=",
+                "%", "%%", "#", "##"
         };
-
         nextc = makestrspace((strlen(s) + 1) * 8, cmdnextc);
         p = s;
         while ((c = *p++) != 0) {
@@ -7647,14 +7648,10 @@ cmdputs(const char *s)
                                 goto dostr;
                         break;
                 case CTLENDVAR:
+                        str = "\"}" + !(quoted & 1);
                         quoted >>= 1;
                         subtype = 0;
-                        if (quoted & 1) {
-                                str = "\"}";
-                                goto dostr;
-                        }
-                        c = '}';
-                        break;
+                        goto dostr;
                 case CTLBACKQ:
                         str = "$(...)";
                         goto dostr;
@@ -7676,13 +7673,13 @@ cmdputs(const char *s)
                 case '=':
                         if (subtype == 0)
                                 break;
+                        if ((subtype & VSTYPE) != VSNORMAL)
+                                quoted <<= 1;
                         str = vstype[subtype & VSTYPE];
                         if (subtype & VSNUL)
                                 c = ':';
                         else
-                                c = *str++;
-                        if (c != '}')
-                                quoted <<= 1;
+                                goto checkstr;
                         break;
                 case '\'':
                 case '\\':
@@ -7697,6 +7694,7 @@ cmdputs(const char *s)
                         break;
                 }
                 USTPUTC(c, nextc);
+checkstr:
                 if (!str)
                         continue;
 dostr:
@@ -8138,7 +8136,7 @@ static int dotcmd(int argc, char **argv)
         for (sp = cmdenviron; sp; sp = sp->next)
                 setvareq(bb_xstrdup(sp->text), VSTRFIXED | VTEXTFIXED);
 
-        if (argc >= 2) {        /* That's what SVR2 does */
+        if (argc >= 2) {        /* That's what SVR2 does */
                 char *fullname;
                 struct stackmark smark;
 
@@ -9892,7 +9890,6 @@ parseheredoc(void)
         while (here) {
                 if (needprompt) {
                         setprompt(2);
-                        needprompt = 0;
                 }
                 readtoken1(pgetc(), here->here->type == NHERE? SQSYNTAX : DQSYNTAX,
                                 here->eofmark, here->striptabs);
@@ -10025,7 +10022,6 @@ static int xxreadtoken()
         }
         if (needprompt) {
                 setprompt(2);
-                needprompt = 0;
         }
         startlinno = plinno;
         for (;;) {                      /* until token or start of word found */
@@ -10093,7 +10089,6 @@ xxreadtoken(void)
         }
         if (needprompt) {
                 setprompt(2);
-                needprompt = 0;
         }
         startlinno = plinno;
         for (;;) {      /* until token or start of word found */
@@ -10649,7 +10644,6 @@ parsebackq: {
                 for (;;) {
                         if (needprompt) {
                                 setprompt(2);
-                                needprompt = 0;
                         }
                         switch (pc = pgetc()) {
                         case '`':
@@ -10859,9 +10853,35 @@ synerror(const char *msg)
  *    should be added here.
  */
 
+#ifdef CONFIG_ASH_EXPAND_PRMT
+static const char *
+expandstr(const char *ps)
+{
+        union node n;
+
+        /* XXX Fix (char *) cast. */
+        setinputstring((char *)ps);
+        readtoken1(pgetc(), DQSYNTAX, nullstr, 0);
+        popfile();
+
+        n.narg.type = NARG;
+        n.narg.next = NULL;
+        n.narg.text = wordtext;
+        n.narg.backquote = backquotelist;
+
+        expandarg(&n, NULL, 0);
+        return stackblock();
+}
+#endif
+
 static void setprompt(int whichprompt)
 {
         const char *prompt;
+#ifdef CONFIG_ASH_EXPAND_PRMT
+        struct stackmark smark;
+#endif
+
+        needprompt = 0;
 
         switch (whichprompt) {
         case 1:
@@ -10873,7 +10893,14 @@ static void setprompt(int whichprompt)
         default:                        /* 0 */
                 prompt = nullstr;
         }
-        putprompt(prompt);
+#ifdef CONFIG_ASH_EXPAND_PRMT
+        setstackmark(&smark);
+        stalloc(stackblocksize());
+#endif
+        putprompt(expandstr(prompt));
+#ifdef CONFIG_ASH_EXPAND_PRMT
+        popstackmark(&smark);
+#endif
 }
 
 
@@ -13341,7 +13368,11 @@ arith_apply(operator op, v_n_t *numstack, v_n_t **numstackptr)
                         goto err;
                 }
                 /* save to shell variable */
-                snprintf(buf, sizeof(buf), "%lld", (long long) rez);
+#ifdef CONFIG_ASH_MATH_SUPPORT_64
+                snprintf(buf, sizeof(buf), "%lld", rez);
+#else
+                snprintf(buf, sizeof(buf), "%ld", rez);
+#endif
                 setvar(numptr_m1->var, buf, 0);
                 /* after saving, make previous value for v++ or v-- */
                 if(op == TOK_POST_INC)
@@ -13479,7 +13510,11 @@ static arith_t arith (const char *expr, int *perrcode)
                         continue;
                 } else if (is_digit(arithval)) {
                         numstackptr->var = NULL;
+#ifdef CONFIG_ASH_MATH_SUPPORT_64
                         numstackptr->val = strtoll(expr, (char **) &expr, 0);
+#else
+                        numstackptr->val = strtol(expr, (char **) &expr, 0);
+#endif
                         goto num;
                 }
                 for(p = op_tokens; ; p++) {