- fix "noreduce" flag of config_read (didn't work at all, at least for me).

- convert init's inittab parsing to the new config parser: function old new delta config_read 393 386 -7 static.actions 72 64 -8 .rodata 121772 121764 -8 parse_inittab 554 393 -161 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-184) Total: -184 bytes
author: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> 2008-07-17 14:00:42 +0000
committer: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com> 2008-07-17 14:00:42 +0000
commit: 54d50a0b476ec2e6015dffd9598edc2d7968047b (patch)
tree: 4ee4b75067cabcbb0dca4b1c99be668dc48b563c /init/init.c
parent: 679212836a881b53382ea6bd811f38e00705d50d (diff)
download: busybox-w32-54d50a0b476ec2e6015dffd9598edc2d7968047b.tar.gz
busybox-w32-54d50a0b476ec2e6015dffd9598edc2d7968047b.tar.bz2
busybox-w32-54d50a0b476ec2e6015dffd9598edc2d7968047b.zip
1 files changed, 69 insertions, 5 deletions
diff --git a/init/init.c b/init/init.c
index 4b2bd9c77..3f16551ea 100644
--- a/init/init.c
+++ b/init/init.c
@@ -43,6 +43,7 @@
 #define SHUTDOWN    0x40
 #define RESTART     0x80
+/*
 #define STR_SYSINIT     "\x01"
 #define STR_RESPAWN     "\x02"
 #define STR_ASKFIRST    "\x04"
@@ -51,7 +52,7 @@
 #define STR_CTRLALTDEL  "\x20"
 #define STR_SHUTDOWN    "\x40"
 #define STR_RESTART     "\x80"
+*/
 /* Set up a linked list of init_actions, to be read from inittab */
 struct init_action {
        struct init_action *next;
@@ -558,12 +559,11 @@ static void kill_all_processes(void)
 static void halt_reboot_pwoff(int sig)
 {
-        const char *m;
+        const char *m = "halt";
        int rb;
        kill_all_processes();
-        m = "halt";
        rb = RB_HALT_SYSTEM;
        if (sig == SIGTERM) {
                m = "reboot";
@@ -687,6 +687,7 @@ static void delete_init_action(struct init_action *action)
 */
 static void parse_inittab(void)
 {
+#if 0
        FILE *file;
        char buf[COMMAND_SIZE];
@@ -774,6 +775,67 @@ static void parse_inittab(void)
 next_line: ;
        }
        fclose(file);
+#else
+        char *token[4];
+        static const char actions[] ALIGN1 = {
+          "sysinit\0""respawn\0""askfirst\0""wait\0""once\0"
+          "ctrlaltdel\0""shutdown\0""restart\0"
+        };
+        enum {STR_SYSINIT=0, STR_RESPAWN, STR_ASKFIRST, STR_WAIT, STR_ONCE,
+          STR_CTRLALTDEL, STR_SHUTDOWN, STR_RESTART};
+        parser_t *parser = config_open(INITTAB);
+        /* No inittab file -- set up some default behavior */
+        if (parser == NULL) {
+                /* Reboot on Ctrl-Alt-Del */
+                new_init_action(CTRLALTDEL, "reboot", "");
+                /* Umount all filesystems on halt/reboot */
+                new_init_action(SHUTDOWN, "umount -a -r", "");
+                /* Swapoff on halt/reboot */
+                if (ENABLE_SWAPONOFF)
+                        new_init_action(SHUTDOWN, "swapoff -a", "");
+                /* Prepare to restart init when a QUIT is received */
+                new_init_action(RESTART, "init", "");
+                /* Askfirst shell on tty1-4 */
+                new_init_action(ASKFIRST, bb_default_login_shell, "");
+                new_init_action(ASKFIRST, bb_default_login_shell, VC_2);
+                new_init_action(ASKFIRST, bb_default_login_shell, VC_3);
+                new_init_action(ASKFIRST, bb_default_login_shell, VC_4);
+                /* sysinit */
+                new_init_action(SYSINIT, INIT_SCRIPT, "");
+                return;
+        }
+        /* optional_tty:ignored_runlevel:action:command
+         * i.e. 4 tokens, minimum number of tokens is 2 ("::sysinit:echo foo")
+         * We require tokens not to be collapsed -- need exactly 4 tokens.
+         */
+        while (config_read(parser, token, -4, 2, ":", '#') >= 0) {
+                int action = -1;
+                char *tty = token[0];
+                char *action_string = token[2];
+                char *command = token[3];
+                if (action_string)
+                        action = index_in_strings(actions, action_string);
+                if (action < 0 || !command || !strlen(command))
+                        goto bad_entry;
+                if (tty) {
+                        /* turn .*TTY -> /dev/TTY */
+                        if (!strncmp(tty, "/dev/", 5))
+                                tty += 5;
+                        tty = concat_path_file("/dev/", tty);
+                } else
+                        tty = ""; /* XXX: ugh. */
+                new_init_action (1<<action, command, tty);
+                if (ENABLE_FEATURE_CLEAN_UP)
+                        free(tty);
+                continue;
+ bad_entry:
+                message(L_LOG | L_CONSOLE, "Bad inittab entry: %s", parser->line);
+        }
+        config_close(parser);
+#endif
 }
 #if ENABLE_FEATURE_USE_INITTAB
@@ -866,7 +928,7 @@ int init_main(int argc UNUSED_PARAM, char **argv)
        /* Figure out where the default console should be */
        console_init();
        set_sane_term();
-        chdir("/");
+        xchdir("/");
        setsid();
        {
                const char *const *e;
@@ -875,7 +937,8 @@ int init_main(int argc UNUSED_PARAM, char **argv)
                        putenv((char *) *e);
        }
-        if (argv[1]) setenv("RUNLEVEL", argv[1], 1);
+        if (argv[1])
+                setenv("RUNLEVEL", argv[1], 1);
        /* Hello world */
        message(MAYBE_CONSOLE | L_LOG, "init started: %s", bb_banner);
@@ -900,6 +963,7 @@ int init_main(int argc UNUSED_PARAM, char **argv)
        if (argv[1]
         && (!strcmp(argv[1], "single") || !strcmp(argv[1], "-s") || LONE_CHAR(argv[1], '1'))
        ) {
+                /* ??? shouldn't we set RUNLEVEL="b" here? */
                /* Start a shell on console */
                new_init_action(RESPAWN, bb_default_login_shell, "");
        } else {
author	Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>	2008-07-17 14:00:42 +0000
committer	Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>	2008-07-17 14:00:42 +0000
commit	54d50a0b476ec2e6015dffd9598edc2d7968047b (patch)
tree	4ee4b75067cabcbb0dca4b1c99be668dc48b563c /init/init.c
parent	679212836a881b53382ea6bd811f38e00705d50d (diff)
download	busybox-w32-54d50a0b476ec2e6015dffd9598edc2d7968047b.tar.gz busybox-w32-54d50a0b476ec2e6015dffd9598edc2d7968047b.tar.bz2 busybox-w32-54d50a0b476ec2e6015dffd9598edc2d7968047b.zip

diff --git a/init/init.c b/init/init.c index 4b2bd9c77..3f16551ea 100644 --- a/init/init.c +++ b/init/init.c
@@ -43,6 +43,7 @@
43	#define SHUTDOWN 0x40	43	#define SHUTDOWN 0x40
44	#define RESTART 0x80	44	#define RESTART 0x80
45		45
		46	/*
46	#define STR_SYSINIT "\x01"	47	#define STR_SYSINIT "\x01"
47	#define STR_RESPAWN "\x02"	48	#define STR_RESPAWN "\x02"
48	#define STR_ASKFIRST "\x04"	49	#define STR_ASKFIRST "\x04"
@@ -51,7 +52,7 @@
51	#define STR_CTRLALTDEL "\x20"	52	#define STR_CTRLALTDEL "\x20"
52	#define STR_SHUTDOWN "\x40"	53	#define STR_SHUTDOWN "\x40"
53	#define STR_RESTART "\x80"	54	#define STR_RESTART "\x80"
54		55	*/
55	/* Set up a linked list of init_actions, to be read from inittab */	56	/* Set up a linked list of init_actions, to be read from inittab */
56	struct init_action {	57	struct init_action {
57	struct init_action *next;	58	struct init_action *next;
@@ -558,12 +559,11 @@ static void kill_all_processes(void)
558		559
559	static void halt_reboot_pwoff(int sig)	560	static void halt_reboot_pwoff(int sig)
560	{	561	{
561	const char *m;	562	const char *m = "halt";
562	int rb;	563	int rb;
563		564
564	kill_all_processes();	565	kill_all_processes();
565		566
566	m = "halt";
567	rb = RB_HALT_SYSTEM;	567	rb = RB_HALT_SYSTEM;
568	if (sig == SIGTERM) {	568	if (sig == SIGTERM) {
569	m = "reboot";	569	m = "reboot";
@@ -687,6 +687,7 @@ static void delete_init_action(struct init_action *action)
687	*/	687	*/
688	static void parse_inittab(void)	688	static void parse_inittab(void)
689	{	689	{
		690	#if 0
690	FILE *file;	691	FILE *file;
691	char buf[COMMAND_SIZE];	692	char buf[COMMAND_SIZE];
692		693
@@ -774,6 +775,67 @@ static void parse_inittab(void)
774	next_line: ;	775	next_line: ;
775	}	776	}
776	fclose(file);	777	fclose(file);
		778	#else
		779	char *token[4];
		780	static const char actions[] ALIGN1 = {
		781	"sysinit\0""respawn\0""askfirst\0""wait\0""once\0"
		782	"ctrlaltdel\0""shutdown\0""restart\0"
		783	};
		784	enum {STR_SYSINIT=0, STR_RESPAWN, STR_ASKFIRST, STR_WAIT, STR_ONCE,
		785	STR_CTRLALTDEL, STR_SHUTDOWN, STR_RESTART};
		786
		787	parser_t *parser = config_open(INITTAB);
		788	/* No inittab file -- set up some default behavior */
		789	if (parser == NULL) {
		790	/* Reboot on Ctrl-Alt-Del */
		791	new_init_action(CTRLALTDEL, "reboot", "");
		792	/* Umount all filesystems on halt/reboot */
		793	new_init_action(SHUTDOWN, "umount -a -r", "");
		794	/* Swapoff on halt/reboot */
		795	if (ENABLE_SWAPONOFF)
		796	new_init_action(SHUTDOWN, "swapoff -a", "");
		797	/* Prepare to restart init when a QUIT is received */
		798	new_init_action(RESTART, "init", "");
		799	/* Askfirst shell on tty1-4 */
		800	new_init_action(ASKFIRST, bb_default_login_shell, "");
		801	new_init_action(ASKFIRST, bb_default_login_shell, VC_2);
		802	new_init_action(ASKFIRST, bb_default_login_shell, VC_3);
		803	new_init_action(ASKFIRST, bb_default_login_shell, VC_4);
		804	/* sysinit */
		805	new_init_action(SYSINIT, INIT_SCRIPT, "");
		806
		807	return;
		808	}
		809	/* optional_tty:ignored_runlevel:action:command
		810	* i.e. 4 tokens, minimum number of tokens is 2 ("::sysinit:echo foo")
		811	* We require tokens not to be collapsed -- need exactly 4 tokens.
		812	*/
		813	while (config_read(parser, token, -4, 2, ":", '#') >= 0) {
		814	int action = -1;
		815	char *tty = token[0];
		816	char *action_string = token[2];
		817	char *command = token[3];
		818
		819	if (action_string)
		820	action = index_in_strings(actions, action_string);
		821	if (action < 0 \|\| !command \|\| !strlen(command))
		822	goto bad_entry;
		823	if (tty) {
		824	/* turn .TTY -> /dev/TTY /
		825	if (!strncmp(tty, "/dev/", 5))
		826	tty += 5;
		827	tty = concat_path_file("/dev/", tty);
		828	} else
		829	tty = ""; /* XXX: ugh. */
		830	new_init_action (1<<action, command, tty);
		831	if (ENABLE_FEATURE_CLEAN_UP)
		832	free(tty);
		833	continue;
		834	bad_entry:
		835	message(L_LOG \| L_CONSOLE, "Bad inittab entry: %s", parser->line);
		836	}
		837	config_close(parser);
		838	#endif
777	}	839	}
778		840
779	#if ENABLE_FEATURE_USE_INITTAB	841	#if ENABLE_FEATURE_USE_INITTAB
@@ -866,7 +928,7 @@ int init_main(int argc UNUSED_PARAM, char **argv)
866	/* Figure out where the default console should be */	928	/* Figure out where the default console should be */
867	console_init();	929	console_init();
868	set_sane_term();	930	set_sane_term();
869	chdir("/");	931	xchdir("/");
870	setsid();	932	setsid();
871	{	933	{
872	const char const e;	934	const char const e;
@@ -875,7 +937,8 @@ int init_main(int argc UNUSED_PARAM, char **argv)
875	putenv((char ) e);	937	putenv((char ) e);
876	}	938	}
877		939
878	if (argv[1]) setenv("RUNLEVEL", argv[1], 1);	940	if (argv[1])
		941	setenv("RUNLEVEL", argv[1], 1);
879		942
880	/* Hello world */	943	/* Hello world */
881	message(MAYBE_CONSOLE \| L_LOG, "init started: %s", bb_banner);	944	message(MAYBE_CONSOLE \| L_LOG, "init started: %s", bb_banner);
@@ -900,6 +963,7 @@ int init_main(int argc UNUSED_PARAM, char **argv)
900	if (argv[1]	963	if (argv[1]
901	&& (!strcmp(argv[1], "single") \|\| !strcmp(argv[1], "-s") \|\| LONE_CHAR(argv[1], '1'))	964	&& (!strcmp(argv[1], "single") \|\| !strcmp(argv[1], "-s") \|\| LONE_CHAR(argv[1], '1'))
902	) {	965	) {
		966	/* ??? shouldn't we set RUNLEVEL="b" here? */
903	/* Start a shell on console */	967	/* Start a shell on console */
904	new_init_action(RESPAWN, bb_default_login_shell, "");	968	new_init_action(RESPAWN, bb_default_login_shell, "");
905	} else {	969	} else {