/*
* Mini init implementation for busybox
*
- *
* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
+ * Copyright (C) 1999-2002 by Erik Andersen <andersee@debian.org>
* Adjusted by so many folks, it's impossible to keep track.
*
* This program is free software; you can redistribute it and/or modify
#define fork vfork
#endif
+#define INIT_BUFFS_SIZE 256
+
/* From <linux/vt.h> */
struct vt_stat {
- unsigned short v_active; /* active vt */
- unsigned short v_signal; /* signal to send */
- unsigned short v_state; /* vt bitmask */
+ unsigned short v_active; /* active vt */
+ unsigned short v_signal; /* signal to send */
+ unsigned short v_state; /* vt bitmask */
};
-static const int VT_GETSTATE = 0x5603; /* get global vt state info */
+static const int VT_GETSTATE = 0x5603; /* get global vt state info */
/* From <linux/serial.h> */
struct serial_struct {
- int type;
- int line;
- int port;
- int irq;
- int flags;
- int xmit_fifo_size;
- int custom_divisor;
- int baud_base;
- unsigned short close_delay;
- char reserved_char[2];
- int hub6;
- unsigned short closing_wait; /* time to wait before closing */
- unsigned short closing_wait2; /* no longer used... */
- int reserved[4];
+ int type;
+ int line;
+ int port;
+ int irq;
+ int flags;
+ int xmit_fifo_size;
+ int custom_divisor;
+ int baud_base;
+ unsigned short close_delay;
+ char reserved_char[2];
+ int hub6;
+ unsigned short closing_wait; /* time to wait before closing */
+ unsigned short closing_wait2; /* no longer used... */
+ int reserved[4];
};
-#if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__)
- #include <sys/reboot.h>
- #define init_reboot(magic) reboot(magic)
+#if (__GNU_LIBRARY__ > 5) || defined(__dietlibc__)
+#include <sys/reboot.h>
+#define init_reboot(magic) reboot(magic)
#else
- #define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
+#define init_reboot(magic) reboot(0xfee1dead, 672274793, magic)
#endif
#ifndef _PATH_STDPATH
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
#if __GNU_LIBRARY__ > 5
- #include <sys/kdaemon.h>
+#include <sys/kdaemon.h>
#else
- extern int bdflush (int func, long int data);
+extern int bdflush(int func, long int data);
#endif
-#define SHELL "/bin/sh" /* Default shell */
-#define LOGIN_SHELL "-" SHELL /* Default login shell */
-#define INITTAB "/etc/inittab" /* inittab file location */
+#define SHELL "/bin/sh" /* Default shell */
+#define LOGIN_SHELL "-" SHELL /* Default login shell */
+#define INITTAB "/etc/inittab" /* inittab file location */
#ifndef INIT_SCRIPT
-#define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
+#define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
#endif
#define MAXENV 16 /* Number of env. vars */
/* Set up a linked list of init_actions, to be read from inittab */
struct init_action {
pid_t pid;
- char command[256];
- char terminal[256];
+ char command[INIT_BUFFS_SIZE];
+ char terminal[INIT_BUFFS_SIZE];
struct init_action *next;
int action;
};
/* Static variables */
static struct init_action *init_action_list = NULL;
-static char *secondConsole = VC_2;
-static char *thirdConsole = VC_3;
-static char *fourthConsole = VC_4;
-static char *log = VC_5;
-static int kernelVersion = 0;
-static char termType[32] = "TERM=linux";
-static char console[32] = _PATH_CONSOLE;
+static int kernelVersion = 0;
+static char termType[32] = "TERM=linux";
+static char console[32] = _PATH_CONSOLE;
+
+#ifndef CONFIG_SYSLOGD
+static char *log = VC_5;
+#endif
static sig_atomic_t got_cont = 0;
static const int LOG = 0x1;
static const int CONSOLE = 0x2;
-#if defined BB_FEATURE_EXTRA_QUIET
+
+#if defined CONFIG_FEATURE_EXTRA_QUIET
static const int MAYBE_CONSOLE = 0x0;
#else
#define MAYBE_CONSOLE CONSOLE
static const int RB_HALT_SYSTEM = 0xcdef0123;
static const int RB_ENABLE_CAD = 0x89abcdef;
static const int RB_DISABLE_CAD = 0;
+
#define RB_POWER_OFF 0x4321fedc
static const int RB_AUTOBOOT = 0x01234567;
#endif
static void loop_forever(void)
{
while (1)
- sleep (1);
+ sleep(1);
}
/* Print a message to the specified device.
* Device may be bitwise-or'd from LOG | CONSOLE */
#ifdef DEBUG_INIT
-static inline messageND(int device, char *fmt, ...) { }
-#else
+static inline messageND(int device, char *fmt, ...)
+{
+}
+#else
#define messageND message
#endif
-static void message(int device, char *fmt, ...) __attribute__ ((format (printf, 2, 3)));
+static void message(int device, char *fmt, ...)
+ __attribute__ ((format(printf, 2, 3)));
static void message(int device, char *fmt, ...)
{
va_list arguments;
/* Take full control of the log tty, and never close it.
* It's mine, all mine! Muhahahaha! */
if (log_fd < 0) {
- if (log == NULL) {
- /* don't even try to log, because there is no such console */
- log_fd = -2;
- /* log to main console instead */
- device = CONSOLE;
- } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
+ if ((log_fd = device_open(log, O_RDWR | O_NDELAY)) < 0) {
log_fd = -2;
fprintf(stderr, "Bummer, can't write to log on %s!\n", log);
- log = NULL;
device = CONSOLE;
+ } else {
+ fcntl(log_fd, F_SETFD, FD_CLOEXEC);
}
}
if ((device & LOG) && (log_fd >= 0)) {
if (device & CONSOLE) {
/* Always send console messages to /dev/console so people will see them. */
- if (
- (fd =
- device_open(_PATH_CONSOLE, O_WRONLY | O_NOCTTY | O_NDELAY)) >= 0) {
+ if ((fd =
+ device_open(_PATH_CONSOLE,
+ O_WRONLY | O_NOCTTY | O_NDELAY)) >= 0) {
va_start(arguments, fmt);
vdprintf(fd, fmt, arguments);
va_end(arguments);
tcgetattr(fd, &tty);
/* set control chars */
- tty.c_cc[VINTR] = 3; /* C-c */
- tty.c_cc[VQUIT] = 28; /* C-\ */
- tty.c_cc[VERASE] = 127; /* C-? */
- tty.c_cc[VKILL] = 21; /* C-u */
- tty.c_cc[VEOF] = 4; /* C-d */
+ tty.c_cc[VINTR] = 3; /* C-c */
+ tty.c_cc[VQUIT] = 28; /* C-\ */
+ tty.c_cc[VERASE] = 127; /* C-? */
+ tty.c_cc[VKILL] = 21; /* C-u */
+ tty.c_cc[VEOF] = 4; /* C-d */
tty.c_cc[VSTART] = 17; /* C-q */
- tty.c_cc[VSTOP] = 19; /* C-s */
- tty.c_cc[VSUSP] = 26; /* C-z */
+ tty.c_cc[VSTOP] = 19; /* C-s */
+ tty.c_cc[VSUSP] = 26; /* C-z */
/* use line dicipline 0 */
tty.c_line = 0;
/* Make it be sane */
- tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
- tty.c_cflag |= CREAD|HUPCL|CLOCAL;
+ tty.c_cflag &= CBAUD | CBAUDEX | CSIZE | CSTOPB | PARENB | PARODD;
+ tty.c_cflag |= CREAD | HUPCL | CLOCAL;
/* input modes */
static int check_free_memory(void)
{
struct sysinfo info;
- unsigned int result, u, s=10;
+ unsigned int result, u, s = 10;
if (sysinfo(&info) != 0) {
perror_msg("Error checking free memory");
/* Kernels 2.0.x and 2.2.x return info.mem_unit==0 with values in bytes.
* Kernels 2.4.0 return info.mem_unit in bytes. */
u = info.mem_unit;
- if (u==0) u=1;
- while ( (u&1) == 0 && s > 0 ) { u>>=1; s--; }
- result = (info.totalram>>s) + (info.totalswap>>s);
- result = result*u;
- if (result < 0) result = INT_MAX;
+ if (u == 0)
+ u = 1;
+ while ((u & 1) == 0 && s > 0) {
+ u >>= 1;
+ s--;
+ }
+ result = (info.totalram >> s) + (info.totalswap >> s);
+ result = result * u;
+ if (result < 0)
+ result = INT_MAX;
return result;
}
/* Perhaps we should panic here? */
safe_strncpy(console, "/dev/null", sizeof(console));
} else {
- /* check for serial console and disable logging to tty5 &
- * running a shell to tty2-4 */
+ /* check for serial console */
if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
- log = NULL;
- secondConsole = NULL;
- thirdConsole = NULL;
- fourthConsole = NULL;
/* Force the TERM setting to vt102 for serial console --
- * iff TERM is set to linux (the default) */
- if (strcmp( termType, "TERM=linux" ) == 0)
+ * if TERM is set to linux (the default) */
+ if (strcmp(termType, "TERM=linux") == 0)
safe_strncpy(termType, "TERM=vt102", sizeof(termType));
- message(LOG | CONSOLE,
- "serial console detected. Disabling virtual terminals.\n");
}
close(fd);
}
message(LOG, "console=%s\n", console);
}
-
+
static void fixup_argv(int argc, char **argv, char *new_argv0)
{
int len;
+
/* Fix up argv[0] to be certain we claim to be init */
len = strlen(argv[0]);
memset(argv[0], 0, len);
#endif
goodnight:
- message(CONSOLE,
- "Sorry, your computer does not have enough memory.\n");
+ message(CONSOLE, "\rSorry, your computer does not have enough memory.\n");
loop_forever();
}
static pid_t run(struct init_action *a)
{
struct stat sb;
- int i, j, fd, junk;
+ int i, j, junk;
pid_t pid, pgrp, tmp_pid;
- char *s, *tmpCmd, *cmd[255], *cmdpath, buf[255];
+ char *s, *tmpCmd, *cmd[INIT_BUFFS_SIZE], *cmdpath;
+ char buf[INIT_BUFFS_SIZE + 6]; /* INIT_BUFFS_SIZE+strlen("exec ")+1 */
sigset_t nmask, omask;
- char *environment[MAXENV+1] = {
+ char *environment[MAXENV + 1] = {
termType,
"HOME=/",
"PATH=" _PATH_STDPATH,
"\nPlease press Enter to activate this console. ";
/* inherit environment to the child, merging our values -andy */
- for (i=0; environ[i]; i++) {
- for (j=0; environment[j]; j++) {
+ for (i = 0; environ[i]; i++) {
+ for (j = 0; environment[j]; j++) {
s = strchr(environment[j], '=');
if (!strncmp(environ[i], environment[j], s - environment[j]))
break;
sigaddset(&nmask, SIGCHLD);
sigprocmask(SIG_BLOCK, &nmask, &omask);
- if ((pid = fork()) == 0)
- {
+ if ((pid = fork()) == 0) {
/* Clean up */
- ioctl(0, TIOCNOTTY, 0);
close(0);
close(1);
close(2);
sigprocmask(SIG_SETMASK, &omask, NULL);
- /* Create a new session and make ourself the process group leader */
- setsid();
-
/* Reset signal handlers that were set by the parent process */
signal(SIGUSR1, SIG_DFL);
signal(SIGUSR2, SIG_DFL);
- signal(SIGINT, SIG_DFL);
+ signal(SIGINT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
- signal(SIGHUP, SIG_DFL);
+ signal(SIGHUP, SIG_DFL);
signal(SIGCONT, SIG_DFL);
signal(SIGSTOP, SIG_DFL);
signal(SIGTSTP, SIG_DFL);
+ /* Create a new session and make ourself the process
+ * group leader */
+ setsid();
+
/* Open the new terminal device */
- if ((fd = device_open(a->terminal, O_RDWR|O_NOCTTY)) < 0) {
+ if ((device_open(a->terminal, O_RDWR)) < 0) {
if (stat(a->terminal, &sb) != 0) {
- message(LOG | CONSOLE, "device '%s' does not exist.\n",
+ message(LOG | CONSOLE, "\rdevice '%s' does not exist.\n",
a->terminal);
_exit(1);
}
- message(LOG | CONSOLE, "Bummer, can't open %s\n", a->terminal);
+ message(LOG | CONSOLE, "\rBummer, can't open %s\n", a->terminal);
_exit(1);
}
+
/* Make sure the terminal will act fairly normal for us */
set_term(0);
+ /* Setup stdout, stderr for the new process so
+ * they point to the supplied terminal */
+ dup(0);
+ dup(0);
- /* If the init Action requires up to wait, then force the
+ /* If the init Action requires us to wait, then force the
* supplied terminal to be the controlling tty. */
- if (a->action & (SYSINIT|WAIT|CTRLALTDEL|SHUTDOWN|RESTART)) {
-
- /* Take over the controlling tty */
- ioctl(fd, TIOCSCTTY, 1);
- /* Setup stdin, stdout, stderr for the new process so
- * they point to the supplied terminal */
- dup(fd);
- dup(fd);
+ if (a->action & (SYSINIT | WAIT | CTRLALTDEL | SHUTDOWN | RESTART)) {
/* Now fork off another process to just hang around */
if ((pid = fork()) < 0) {
signal(SIGCHLD, SIG_DFL);
/* Wait for child to exit */
- while ((tmp_pid = waitpid(pid, &junk, 0)) != pid) {
- if (tmp_pid < 0 && errno == ECHILD)
- break;
- }
+ while ((tmp_pid = waitpid(pid, &junk, 0)) != pid);
/* See if stealing the controlling tty back is necessary */
- pgrp = tcgetpgrp(tmp_pid);
+ pgrp = tcgetpgrp(0);
if (pgrp != getpid())
_exit(0);
/* Use a temporary process to steal the controlling tty. */
if ((pid = fork()) < 0) {
- message(LOG | CONSOLE, "Can't fork!\n");
+ message(LOG | CONSOLE, "\rCan't fork!\n");
_exit(1);
- }
+ }
if (pid == 0) {
setsid();
- ioctl(tmp_pid, TIOCSCTTY, 1);
+ ioctl(0, TIOCSCTTY, 1);
_exit(0);
- }
- while((tmp_pid = waitpid(pid, &junk, 0)) != pid) {
+ }
+ while ((tmp_pid = waitpid(pid, &junk, 0)) != pid) {
if (tmp_pid < 0 && errno == ECHILD)
break;
}
}
/* Now fall though to actually execute things */
- } else {
- dup(fd);
- dup(fd);
}
/* See if any special /bin/sh requiring characters are present */
if (strpbrk(a->command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) {
cmd[0] = SHELL;
cmd[1] = "-c";
- strcpy(buf, "exec ");
- safe_strncpy(buf + sizeof("exec "), a->command,
- sizeof(buf) - sizeof("exec "));
+ strcat(strcpy(buf, "exec "), a->command);
cmd[2] = buf;
cmd[3] = NULL;
} else {
/* Convert command (char*) into cmd (char**, one word per string) */
- safe_strncpy(buf, a->command, sizeof(buf));
+ strcpy(buf, a->command);
s = buf;
- for (tmpCmd = buf, i = 0;
- (tmpCmd = strsep(&s, " \t")) != NULL;) {
+ for (tmpCmd = buf, i = 0; (tmpCmd = strsep(&s, " \t")) != NULL;) {
if (*tmpCmd != '\0') {
cmd[i] = tmpCmd;
- tmpCmd++;
i++;
}
}
s = get_last_path_component(cmdpath);
/* make a new argv[0] */
- if ((cmd[0] = malloc(strlen(s)+2)) == NULL) {
+ if ((cmd[0] = malloc(strlen(s) + 2)) == NULL) {
message(LOG | CONSOLE, "malloc failed");
cmd[0] = cmdpath;
} else {
cmd[0][0] = '-';
- strcpy(cmd[0]+1, s);
+ strcpy(cmd[0] + 1, s);
}
}
* be allowed to start a shell or whatever an init script
* specifies.
*/
- messageND(LOG, "Waiting for enter to start '%s' (pid %d, terminal %s)\n",
- cmdpath, getpid(), a->terminal);
+ messageND(LOG,
+ "Waiting for enter to start '%s' (pid %d, terminal %s)\n",
+ cmdpath, getpid(), a->terminal);
+ fflush(stdout);
write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
getc(stdin);
}
/* Log the process name and args */
messageND(LOG, "Starting pid %d, console %s: '%s'\n",
- getpid(), a->terminal, cmdpath);
+ getpid(), a->terminal, cmdpath);
#if defined CONFIG_FEATURE_INIT_COREDUMPS
- if (stat (CORE_ENABLE_FLAG_FILE, &sb) == 0) {
+ if (stat(CORE_ENABLE_FLAG_FILE, &sb) == 0) {
struct rlimit limit;
+
limit.rlim_cur = RLIM_INFINITY;
limit.rlim_max = RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &limit);
execve(cmdpath, cmd, environment);
/* We're still here? Some error happened. */
- message(LOG | CONSOLE, "Bummer, could not run '%s': %s\n", cmdpath,
- strerror(errno));
+ message(LOG | CONSOLE, "\rBummer, could not run '%s': %m\n", cmdpath);
_exit(-1);
}
sigprocmask(SIG_SETMASK, &omask, NULL);
static int waitfor(struct init_action *a)
{
- int pid;
+ int pid;
int status, wpid;
pid = run(a);
for (a = init_action_list; a; a = tmp) {
tmp = a->next;
if (a->action == action) {
- if (a->action & (SYSINIT|WAIT|CTRLALTDEL|SHUTDOWN|RESTART)) {
+ if (a->action & (SYSINIT | WAIT | CTRLALTDEL | SHUTDOWN | RESTART)) {
waitfor(a);
delete_init_action(a);
} else if (a->action & ONCE) {
run(a);
delete_init_action(a);
- } else if (a->action & (RESPAWN|ASKFIRST)) {
+ } else if (a->action & (RESPAWN | ASKFIRST)) {
/* Only run stuff with pid==0. If they have
* a pid, that means it is still running */
if (a->pid == 0) {
{
sigset_t block_signals;
+ /* run everything to be run at "shutdown". This is done _prior_
+ * to killing everything, in case people wish to use scripts to
+ * shut things down gracefully... */
+ run_actions(SHUTDOWN);
+
/* first disable all our signals */
sigemptyset(&block_signals);
sigaddset(&block_signals, SIGHUP);
/* Allow Ctrl-Alt-Del to reboot system. */
init_reboot(RB_ENABLE_CAD);
- message(CONSOLE|LOG, "\nThe system is going down NOW !!\n");
+ message(CONSOLE | LOG, "\n\rThe system is going down NOW !!\n");
sync();
/* Send signals to every process _except_ pid 1 */
- message(CONSOLE|LOG, "Sending SIGTERM to all processes.\n");
+ message(CONSOLE | LOG, "\rSending SIGTERM to all processes.\n");
kill(-1, SIGTERM);
sleep(1);
sync();
- message(CONSOLE|LOG, "Sending SIGKILL to all processes.\n");
+ message(CONSOLE | LOG, "\rSending SIGKILL to all processes.\n");
kill(-1, SIGKILL);
sleep(1);
- /* run everything to be run at "shutdown" */
- run_actions(SHUTDOWN);
-
sync();
- if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2,2,11)) {
+ if (kernelVersion > 0 && kernelVersion <= KERNEL_VERSION(2, 2, 11)) {
/* bdflush, kupdate not needed for kernels >2.2.11 */
bdflush(1, 0);
sync();
static void exec_signal(int sig)
{
struct init_action *a, *tmp;
+ sigset_t unblock_signals;
+
for (a = init_action_list; a; a = tmp) {
tmp = a->next;
if (a->action & RESTART) {
shutdown_system();
- message(CONSOLE|LOG, "Trying to re-exec %s\n", a->command);
+
+ /* unblock all signals, blocked in shutdown_system() */
+ sigemptyset(&unblock_signals);
+ sigaddset(&unblock_signals, SIGHUP);
+ sigaddset(&unblock_signals, SIGCHLD);
+ sigaddset(&unblock_signals, SIGUSR1);
+ sigaddset(&unblock_signals, SIGUSR2);
+ sigaddset(&unblock_signals, SIGINT);
+ sigaddset(&unblock_signals, SIGTERM);
+ sigaddset(&unblock_signals, SIGCONT);
+ sigaddset(&unblock_signals, SIGSTOP);
+ sigaddset(&unblock_signals, SIGTSTP);
+ sigprocmask(SIG_UNBLOCK, &unblock_signals, NULL);
+
+ message(CONSOLE | LOG, "\rTrying to re-exec %s\n", a->command);
execl(a->command, a->command, NULL);
-
- message(CONSOLE|LOG, "execl of %s failed: %s\n",
- a->command, sys_errlist[errno]);
+
+ message(CONSOLE | LOG, "\rexec of '%s' failed: %m\n",
+ a->command);
sync();
sleep(2);
init_reboot(RB_HALT_SYSTEM);
static void halt_signal(int sig)
{
shutdown_system();
- message(CONSOLE|LOG,
+ message(CONSOLE | LOG,
#if #cpu(s390)
/* Seems the s390 console is Wierd(tm). */
- "The system is halted. You may reboot now.\n"
+ "\rThe system is halted. You may reboot now.\n"
#else
- /* secondConsole is NULL for a serial console */
- "The system is halted. Press %s or turn off power\n",
- (secondConsole == NULL)? "Reset" : "CTRL-ALT-DEL"
+ "\rThe system is halted. Press Reset or turn off power\n"
#endif
- );
+ );
sync();
/* allow time for last message to reach serial console */
sleep(2);
- if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2,2,0))
+ if (sig == SIGUSR2 && kernelVersion >= KERNEL_VERSION(2, 2, 0))
init_reboot(RB_POWER_OFF);
else
init_reboot(RB_HALT_SYSTEM);
static void reboot_signal(int sig)
{
shutdown_system();
- message(CONSOLE|LOG, "Please stand by while rebooting the system.\n");
+ message(CONSOLE | LOG, "\rPlease stand by while rebooting the system.\n");
sync();
/* allow time for last message to reach serial console */
int saved_errno = errno;
got_cont = 0;
- while(!got_cont) pause();
+ while (!got_cont)
+ pause();
got_cont = 0;
errno = saved_errno;
}
-/* The SIGCONT handler */
+/* The SIGCONT handler */
static void cont_handler(int sig)
{
got_cont = 1;
if (*cons == '\0')
cons = console;
- /* If BusyBox detects that a serial console is in use, then entries
- * not refering to the console or null devices will _not_ be run.
- * The exception to this rule is the null device.
- */
- if (secondConsole == NULL && strcmp(cons, console)
- && strcmp(cons, "/dev/null"))
+ /* do not run entries if console device is not available */
+ if (access(cons, R_OK | W_OK))
return;
if (strcmp(cons, "/dev/null") == 0 && (action & ASKFIRST))
return;
new_action = calloc((size_t) (1), sizeof(struct init_action));
if (!new_action) {
- message(LOG | CONSOLE, "Memory allocation failure\n");
+ message(LOG | CONSOLE, "\rMemory allocation failure\n");
loop_forever();
}
/* Append to the end of the list */
- for (a = init_action_list; a && a->next; a = a->next) ;
+ for (a = init_action_list; a && a->next; a = a->next);
if (a) {
a->next = new_action;
} else {
init_action_list = new_action;
}
- safe_strncpy(new_action->command, command, 255);
+ strcpy(new_action->command, command);
new_action->action = action;
- safe_strncpy(new_action->terminal, cons, 255);
+ strcpy(new_action->terminal, cons);
new_action->pid = 0;
-// message(LOG|CONSOLE, "command='%s' action='%d' terminal='%s'\n",
-// new_action->command, new_action->action, new_action->terminal);
+/* message(LOG|CONSOLE, "command='%s' action='%d' terminal='%s'\n",
+ new_action->command, new_action->action, new_action->terminal); */
}
-static void delete_init_action(struct init_action * action)
+static void delete_init_action(struct init_action *action)
{
struct init_action *a, *b = NULL;
* of "askfirst" shells). If CONFIG_FEATURE_USE_INITTAB
* _is_ defined, but /etc/inittab is missing, this
* results in the same set of default behaviors.
- * */
+ */
static void parse_inittab(void)
{
#ifdef CONFIG_FEATURE_USE_INITTAB
FILE *file;
- char buf[256], lineAsRead[256], tmpConsole[256];
+ char buf[INIT_BUFFS_SIZE], lineAsRead[INIT_BUFFS_SIZE],
+ tmpConsole[INIT_BUFFS_SIZE];
char *id, *runlev, *action, *command, *eol;
const struct init_action_type *a = actions;
int foundIt;
#endif
/* Prepare to restart init when a HUP is received */
new_init_action(RESTART, "/sbin/init", console);
- /* Askfirst shell on tty1 */
+ /* Askfirst shell on tty1-4 */
new_init_action(ASKFIRST, LOGIN_SHELL, console);
- /* Askfirst shell on tty2 */
- if (secondConsole != NULL)
- new_init_action(ASKFIRST, LOGIN_SHELL, secondConsole);
- /* Askfirst shell on tty3 */
- if (thirdConsole != NULL)
- new_init_action(ASKFIRST, LOGIN_SHELL, thirdConsole);
- /* Askfirst shell on tty4 */
- if (fourthConsole != NULL)
- new_init_action(ASKFIRST, LOGIN_SHELL, fourthConsole);
+ new_init_action(ASKFIRST, LOGIN_SHELL, VC_2);
+ new_init_action(ASKFIRST, LOGIN_SHELL, VC_3);
+ new_init_action(ASKFIRST, LOGIN_SHELL, VC_4);
/* sysinit */
new_init_action(SYSINIT, INIT_SCRIPT, console);
#ifdef CONFIG_FEATURE_USE_INITTAB
}
- while (fgets(buf, 255, file) != NULL) {
+ while (fgets(buf, INIT_BUFFS_SIZE, file) != NULL) {
foundIt = FALSE;
/* Skip leading spaces */
for (id = buf; *id == ' ' || *id == '\t'; id++);
/* Separate the ID field from the runlevels */
runlev = strchr(id, ':');
if (runlev == NULL || *(runlev + 1) == '\0') {
- message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
+ message(LOG | CONSOLE, "\rBad inittab entry: %s\n", lineAsRead);
continue;
} else {
*runlev = '\0';
/* Separate the runlevels from the action */
action = strchr(runlev, ':');
if (action == NULL || *(action + 1) == '\0') {
- message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
+ message(LOG | CONSOLE, "\rBad inittab entry: %s\n", lineAsRead);
continue;
} else {
*action = '\0';
/* Separate the action from the command */
command = strchr(action, ':');
if (command == NULL || *(command + 1) == '\0') {
- message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
+ message(LOG | CONSOLE, "\rBad inittab entry: %s\n", lineAsRead);
continue;
} else {
*command = '\0';
if (strcmp(a->name, action) == 0) {
if (*id != '\0') {
strcpy(tmpConsole, "/dev/");
- strncat(tmpConsole, id, 200);
+ strncat(tmpConsole, id, INIT_BUFFS_SIZE - 6);
id = tmpConsole;
}
new_init_action(a->action, command, id);
continue;
else {
/* Choke on an unknown action */
- message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
+ message(LOG | CONSOLE, "\rBad inittab entry: %s\n", lineAsRead);
}
}
+ fclose(file);
return;
-#endif /* CONFIG_FEATURE_USE_INITTAB */
+#endif /* CONFIG_FEATURE_USE_INITTAB */
}
if (argc > 1 && !strcmp(argv[1], "-q")) {
/* don't assume init's pid == 1 */
long *pid = find_pid_by_name("init");
- if (!pid || *pid<=0) {
+
+ if (!pid || *pid <= 0) {
pid = find_pid_by_name("linuxrc");
- if (!pid || *pid<=0)
+ if (!pid || *pid <= 0)
error_msg_and_die("no process killed");
}
kill(*pid, SIGHUP);
exit(0);
}
-
#ifndef DEBUG_INIT
/* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
if (getpid() != 1
#ifdef CONFIG_FEATURE_INITRD
- && strstr(applet_name, "linuxrc") == NULL
+ && strstr(applet_name, "linuxrc") == NULL
#endif
- )
- {
- show_usage();
+ ) {
+ show_usage();
}
/* Set up sig handlers -- be sure to
* clear all of these in run() */
- signal(SIGHUP, exec_signal);
+ signal(SIGHUP, exec_signal);
signal(SIGUSR1, halt_signal);
signal(SIGUSR2, halt_signal);
- signal(SIGINT, ctrlaltdel_signal);
+ signal(SIGINT, ctrlaltdel_signal);
signal(SIGTERM, reboot_signal);
signal(SIGCONT, cont_handler);
signal(SIGSTOP, stop_handler);
/* Figure out what kernel this is running */
kernelVersion = get_kernel_revision();
+ /* Figure out where the default console should be */
+ console_init();
+
/* Close whatever files are open, and reset the console. */
close(0);
close(1);
close(2);
- /* Figure out where the default console should be */
- console_init();
+ if (device_open(console, O_RDWR | O_NOCTTY) == 0) {
+ set_term(0);
+ close(0);
+ }
- set_term(0);
chdir("/");
setsid();
/* Make sure PATH is set to something sane */
- putenv("PATH="_PATH_STDPATH);
+ putenv("PATH=" _PATH_STDPATH);
/* Hello world */
- message(MAYBE_CONSOLE|LOG, "init started: %s\n", full_version);
+ message(MAYBE_CONSOLE | LOG, "\rinit started: %s\n", full_version);
/* Make sure there is enough memory to do something useful. */
check_memory();
if (argc > 1 && (!strcmp(argv[1], "single") ||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
/* Ask first then start a shell on tty2-4 */
- if (secondConsole != NULL)
- new_init_action(ASKFIRST, LOGIN_SHELL, secondConsole);
- if (thirdConsole != NULL)
- new_init_action(ASKFIRST, LOGIN_SHELL, thirdConsole);
- if (fourthConsole != NULL)
- new_init_action(ASKFIRST, LOGIN_SHELL, fourthConsole);
+ new_init_action(ASKFIRST, LOGIN_SHELL, VC_2);
+ new_init_action(ASKFIRST, LOGIN_SHELL, VC_3);
+ new_init_action(ASKFIRST, LOGIN_SHELL, VC_4);
/* Start a shell on tty1 */
new_init_action(RESPAWN, LOGIN_SHELL, console);
} else {
/* If there is nothing else to do, stop */
if (init_action_list == NULL) {
- message(LOG | CONSOLE, "No more tasks for init -- sleeping forever.\n");
+ message(LOG | CONSOLE,
+ "\rNo more tasks for init -- sleeping forever.\n");
loop_forever();
}
projects / oweals / busybox.git / blobdiff