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-rw-r--r--init/init.c139
1 files changed, 19 insertions, 120 deletions
diff --git a/init/init.c b/init/init.c
index 0e4a8f1..6072807 100644
--- a/init/init.c
+++ b/init/init.c
@@ -43,16 +43,6 @@
#define SHUTDOWN 0x40
#define RESTART 0x80
-/*
-#define STR_SYSINIT "\x01"
-#define STR_RESPAWN "\x02"
-#define STR_ASKFIRST "\x04"
-#define STR_WAIT "\x08"
-#define STR_ONCE "\x10"
-#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;
@@ -142,7 +132,7 @@ static void message(int where, const char *fmt, ...)
if (ENABLE_FEATURE_INIT_SYSLOG) {
/* Log the message to syslogd */
if (where & L_LOG) {
- /* don't out "\r" */
+ /* don't print out "\r" */
openlog(applet_name, 0, LOG_DAEMON);
syslog(LOG_INFO, "init: %s", msg + 1);
closelog();
@@ -156,7 +146,7 @@ static void message(int where, const char *fmt, ...)
* It's mine, all mine! Muhahahaha! */
if (log_fd < 0) {
if (!log_console) {
- log_fd = 2;
+ log_fd = STDERR_FILENO;
} else {
log_fd = device_open(log_console, O_WRONLY | O_NONBLOCK | O_NOCTTY);
if (log_fd < 0) {
@@ -169,7 +159,7 @@ static void message(int where, const char *fmt, ...)
}
if (where & L_LOG) {
full_write(log_fd, msg, l);
- if (log_fd == 2)
+ if (log_fd == STDERR_FILENO)
return; /* don't print dup messages */
}
}
@@ -210,13 +200,14 @@ static void console_init(void)
char *s;
s = getenv("CONSOLE");
- if (!s) s = getenv("console");
+ if (!s)
+ s = getenv("console");
if (s) {
int fd = open(s, O_RDWR | O_NONBLOCK | O_NOCTTY);
if (fd >= 0) {
- dup2(fd, 0);
- dup2(fd, 1);
- xmove_fd(fd, 2);
+ dup2(fd, STDIN_FILENO);
+ dup2(fd, STDOUT_FILENO);
+ xmove_fd(fd, STDERR_FILENO);
}
messageD(L_LOG, "console='%s'", s);
} else {
@@ -255,7 +246,7 @@ static void set_sane_term(void)
tty.c_cc[VSTOP] = 19; /* C-s */
tty.c_cc[VSUSP] = 26; /* C-z */
- /* use line dicipline 0 */
+ /* use line discipline 0 */
tty.c_line = 0;
/* Make it be sane */
@@ -282,7 +273,7 @@ static void open_stdio_to_tty(const char* tty_name, int exit_on_failure)
/* empty tty_name means "use init's tty", else... */
if (tty_name[0]) {
int fd;
- close(0);
+ close(STDIN_FILENO);
/* fd can be only < 0 or 0: */
fd = device_open(tty_name, O_RDWR);
if (fd) {
@@ -292,12 +283,12 @@ static void open_stdio_to_tty(const char* tty_name, int exit_on_failure)
_exit(EXIT_FAILURE);
if (ENABLE_DEBUG_INIT)
_exit(2);
- /* NB: we don't reach this if we were called after vfork.
- * Thus halt_reboot_pwoff() itself need not be vfork-safe. */
+ /* NB: we don't reach this if we were called after vfork.
+ * Thus halt_reboot_pwoff() itself need not be vfork-safe. */
halt_reboot_pwoff(SIGUSR1); /* halt the system */
}
- dup2(0, 1);
- dup2(0, 2);
+ dup2(STDIN_FILENO, STDOUT_FILENO);
+ dup2(STDIN_FILENO, STDERR_FILENO);
}
set_sane_term();
}
@@ -346,8 +337,7 @@ static void init_exec(const char *command)
ioctl(STDIN_FILENO, TIOCSCTTY, 0 /*only try, don't steal*/);
}
BB_EXECVP(cmd[0] + dash, cmd);
- message(L_LOG | L_CONSOLE, "Cannot run '%s': %s",
- cmd[0], strerror(errno));
+ message(L_LOG | L_CONSOLE, "Cannot run '%s': %s", cmd[0], strerror(errno));
/* returns if execvp fails */
}
@@ -434,7 +424,6 @@ static pid_t run(const struct init_action *a)
waitfor(pid);
_exit(EXIT_SUCCESS);
}
-
/* Child - fall though to actually execute things */
}
#endif
@@ -640,8 +629,7 @@ static void new_init_action(uint8_t action_type, const char *command, const char
/* don't enter action if it's already in the list,
* but do overwrite existing actions */
if ((strcmp(a->command, command) == 0)
- && (strcmp(a->terminal, cons) == 0)
- ) {
+ && (strcmp(a->terminal, cons) == 0)) {
a->action_type = action_type;
return;
}
@@ -687,95 +675,6 @@ static void delete_init_action(struct init_action *action)
*/
static void parse_inittab(void)
{
-#if 0
- FILE *file;
- char buf[COMMAND_SIZE];
-
- if (ENABLE_FEATURE_USE_INITTAB)
- file = fopen(INITTAB, "r");
- else
- file = NULL;
-
- /* No inittab file -- set up some default behavior */
- if (file == 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;
- }
-
- while (fgets(buf, COMMAND_SIZE, file) != NULL) {
- static const char actions[] =
- STR_SYSINIT "sysinit\0"
- STR_RESPAWN "respawn\0"
- STR_ASKFIRST "askfirst\0"
- STR_WAIT "wait\0"
- STR_ONCE "once\0"
- STR_CTRLALTDEL "ctrlaltdel\0"
- STR_SHUTDOWN "shutdown\0"
- STR_RESTART "restart\0"
- ;
- char tmpConsole[CONSOLE_NAME_SIZE];
- char *id, *runlev, *action, *command;
- const char *a;
-
- /* Skip leading spaces */
- id = skip_whitespace(buf);
- /* Trim the trailing '\n' */
- *strchrnul(id, '\n') = '\0';
- /* Skip the line if it is a comment */
- if (*id == '#' || *id == '\0')
- continue;
-
- /* Line is: "id:runlevel_ignored:action:command" */
- runlev = strchr(id, ':');
- if (runlev == NULL /*|| runlev[1] == '\0' - not needed */)
- goto bad_entry;
- action = strchr(runlev + 1, ':');
- if (action == NULL /*|| action[1] == '\0' - not needed */)
- goto bad_entry;
- command = strchr(action + 1, ':');
- if (command == NULL || command[1] == '\0')
- goto bad_entry;
-
- *command = '\0'; /* action => ":action\0" now */
- for (a = actions; a[0]; a += strlen(a) + 1) {
- if (strcmp(a + 1, action + 1) == 0) {
- *runlev = '\0';
- if (*id != '\0') {
- if (strncmp(id, "/dev/", 5) == 0)
- id += 5;
- strcpy(tmpConsole, "/dev/");
- safe_strncpy(tmpConsole + 5, id,
- sizeof(tmpConsole) - 5);
- id = tmpConsole;
- }
- new_init_action((uint8_t)a[0], command + 1, id);
- goto next_line;
- }
- }
- *command = ':';
- /* Choke on an unknown action */
- bad_entry:
- message(L_LOG | L_CONSOLE, "Bad inittab entry: %s", id);
- next_line: ;
- }
- fclose(file);
-#else
char *token[4];
/* order must correspond to SYSINIT..RESTART constants */
static const char actions[] ALIGN1 =
@@ -808,7 +707,7 @@ static void parse_inittab(void)
/* optional_tty:ignored_runlevel:action:command
* Delims are not to be collapsed and need exactly 4 tokens
*/
- while (config_read(parser, token, 4, 0, "#:", PARSE_DONT_TRIM|PARSE_DONT_REDUCE|PARSE_LAST_IS_GREEDY)) {
+ while (config_read(parser, token, 4, 0, "#:", PARSE_DONT_TRIM|PARSE_DONT_REDUCE|PARSE_LAST_IS_GREEDY)) {
int action;
char *tty = token[0];
@@ -828,10 +727,10 @@ static void parse_inittab(void)
free(tty);
continue;
bad_entry:
- message(L_LOG | L_CONSOLE, "Bad inittab entry at line %d", parser->lineno);
+ message(L_LOG | L_CONSOLE, "Bad inittab entry at line %d",
+ parser->lineno);
}
config_close(parser);
-#endif
}
#if ENABLE_FEATURE_USE_INITTAB
generated by cgit v1.1 at 2024-12-26 20:34:40 +0000