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Diffstat (limited to 'init')
-rw-r--r--init/halt.c9
-rw-r--r--init/init.c1335
-rw-r--r--init/poweroff.c8
-rw-r--r--init/reboot.c8
4 files changed, 690 insertions, 670 deletions
diff --git a/init/halt.c b/init/halt.c
index 23eb23c..d61c387 100644
--- a/init/halt.c
+++ b/init/halt.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
/*
* Mini halt implementation for busybox
*
@@ -23,10 +24,8 @@
#include "internal.h"
#include <signal.h>
-extern int
-halt_main(int argc, char ** argv)
+extern int halt_main(int argc, char **argv)
{
- /* don't assume init's pid == 1 */
- exit( kill(findInitPid(), SIGUSR1));
+ /* don't assume init's pid == 1 */
+ exit(kill(findInitPid(), SIGUSR1));
}
-
diff --git a/init/init.c b/init/init.c
index 6dad718..899dca4 100644
--- a/init/init.c
+++ b/init/init.c
@@ -41,8 +41,8 @@
#include <sys/kdaemon.h>
#include <sys/sysmacros.h>
#include <asm/types.h>
-#include <linux/serial.h> /* for serial_struct */
-#include <sys/vt.h> /* for vt_stat */
+#include <linux/serial.h> /* for serial_struct */
+#include <sys/vt.h> /* for vt_stat */
#include <sys/ioctl.h>
#include <linux/version.h>
#ifdef BB_SYSLOGD
@@ -58,15 +58,15 @@
#endif
-#define VT_PRIMARY "/dev/tty1" /* Primary virtual console */
-#define VT_SECONDARY "/dev/tty2" /* Virtual console */
-#define VT_LOG "/dev/tty3" /* Virtual console */
-#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
-#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
-#define SHELL "/bin/sh" /* Default shell */
-#define INITTAB "/etc/inittab" /* inittab file location */
+#define VT_PRIMARY "/dev/tty1" /* Primary virtual console */
+#define VT_SECONDARY "/dev/tty2" /* Virtual console */
+#define VT_LOG "/dev/tty3" /* Virtual console */
+#define SERIAL_CON0 "/dev/ttyS0" /* Primary serial console */
+#define SERIAL_CON1 "/dev/ttyS1" /* Serial console */
+#define SHELL "/bin/sh" /* Default 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 LOG 0x1
@@ -74,38 +74,38 @@
/* Allowed init action types */
typedef enum {
- SYSINIT=1,
- RESPAWN,
- ASKFIRST,
- WAIT,
- ONCE
+ SYSINIT = 1,
+ RESPAWN,
+ ASKFIRST,
+ WAIT,
+ ONCE
} initActionEnum;
/* And now a list of the actions we support in the version of init */
-typedef struct initActionType{
- const char* name;
- initActionEnum action;
+typedef struct initActionType {
+ const char *name;
+ initActionEnum action;
} initActionType;
static const struct initActionType actions[] = {
- {"sysinit", SYSINIT},
- {"respawn", RESPAWN},
- {"askfirst", ASKFIRST},
- {"wait", WAIT},
- {"once", ONCE},
- {0}
+ {"sysinit", SYSINIT},
+ {"respawn", RESPAWN},
+ {"askfirst", ASKFIRST},
+ {"wait", WAIT},
+ {"once", ONCE},
+ {0}
};
/* Set up a linked list of initactions, to be read from inittab */
typedef struct initActionTag initAction;
struct initActionTag {
- pid_t pid;
- char process[256];
- char console[256];
- initAction *nextPtr;
- initActionEnum action;
+ pid_t pid;
+ char process[256];
+ char console[256];
+ initAction *nextPtr;
+ initActionEnum action;
};
-initAction* initActionList = NULL;
+initAction *initActionList = NULL;
static char *secondConsole = VT_SECONDARY;
@@ -119,517 +119,533 @@ static char console[32] = _PATH_CONSOLE;
* device may be bitwise-or'd from LOG | CONSOLE */
void message(int device, char *fmt, ...)
{
- va_list arguments;
- int fd;
+ va_list arguments;
+ int fd;
#ifdef BB_SYSLOGD
- /* Log the message to syslogd */
- if (device & LOG ) {
- char msg[1024];
- va_start(arguments, fmt);
- vsnprintf(msg, sizeof(msg), fmt, arguments);
- va_end(arguments);
- openlog( "init", 0, LOG_DAEMON);
- syslog(LOG_DAEMON|LOG_NOTICE, msg);
- closelog();
- }
+ /* Log the message to syslogd */
+ if (device & LOG) {
+ char msg[1024];
+ va_start(arguments, fmt);
+ vsnprintf(msg, sizeof(msg), fmt, arguments);
+ va_end(arguments);
+ openlog("init", 0, LOG_DAEMON);
+ syslog(LOG_DAEMON | LOG_NOTICE, msg);
+ closelog();
+ }
#else
- static int log_fd = -1;
-
- /* 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) {
- log_fd = -1;
- fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
- fflush(stderr);
- return;
+ static int log_fd = -1;
+
+ /* 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) {
+ log_fd = -1;
+ fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
+ fflush(stderr);
+ return;
+ }
+ }
+ if ((device & LOG) && (log_fd >= 0)) {
+ va_start(arguments, fmt);
+ vdprintf(log_fd, fmt, arguments);
+ va_end(arguments);
}
- }
- if ( (device & LOG) && (log_fd >= 0) ) {
- va_start(arguments, fmt);
- vdprintf(log_fd, fmt, arguments);
- va_end(arguments);
- }
#endif
- 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) {
- va_start(arguments, fmt);
- vdprintf(fd, fmt, arguments);
- va_end(arguments);
- close(fd);
- } else {
- fprintf(stderr, "Bummer, can't print: ");
- va_start(arguments, fmt);
- vfprintf(stderr, fmt, arguments);
- fflush(stderr);
- va_end(arguments);
+ 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) {
+ va_start(arguments, fmt);
+ vdprintf(fd, fmt, arguments);
+ va_end(arguments);
+ close(fd);
+ } else {
+ fprintf(stderr, "Bummer, can't print: ");
+ va_start(arguments, fmt);
+ vfprintf(stderr, fmt, arguments);
+ fflush(stderr);
+ va_end(arguments);
+ }
}
- }
}
/* Set terminal settings to reasonable defaults */
-void set_term( int fd)
+void set_term(int fd)
{
- struct termios tty;
- static const char control_characters[] = {
- '\003', '\034', '\177', '\025', '\004', '\0',
- '\1', '\0', '\021', '\023', '\032', '\0', '\022',
- '\017', '\027', '\026', '\0'
+ struct termios tty;
+ static const char control_characters[] = {
+ '\003', '\034', '\177', '\025', '\004', '\0',
+ '\1', '\0', '\021', '\023', '\032', '\0', '\022',
+ '\017', '\027', '\026', '\0'
};
- tcgetattr(fd, &tty);
+ tcgetattr(fd, &tty);
- /* set control chars */
- memcpy(tty.c_cc, control_characters, sizeof(control_characters));
+ /* set control chars */
+ memcpy(tty.c_cc, control_characters, sizeof(control_characters));
- /* use line dicipline 0 */
- tty.c_line = 0;
+ /* use line dicipline 0 */
+ tty.c_line = 0;
- /* Make it be sane */
- //tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
- //tty.c_cflag |= HUPCL|CLOCAL;
+ /* Make it be sane */
+ //tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
+ //tty.c_cflag |= HUPCL|CLOCAL;
- /* input modes */
- tty.c_iflag = ICRNL|IXON|IXOFF;
+ /* input modes */
+ tty.c_iflag = ICRNL | IXON | IXOFF;
- /* output modes */
- tty.c_oflag = OPOST|ONLCR;
+ /* output modes */
+ tty.c_oflag = OPOST | ONLCR;
- /* local modes */
- tty.c_lflag = ISIG|ICANON|ECHO|ECHOE|ECHOK|ECHOCTL|ECHOKE|IEXTEN;
+ /* local modes */
+ tty.c_lflag =
+ ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN;
- tcsetattr(fd, TCSANOW, &tty);
+ tcsetattr(fd, TCSANOW, &tty);
}
/* How much memory does this machine have? */
static int mem_total()
{
- char s[80];
- char *p = "/proc/meminfo";
- FILE *f;
- const char pattern[] = "MemTotal:";
-
- if ((f = fopen(p, "r")) < 0) {
- message(LOG, "Error opening %s: %s\n", p, strerror( errno));
- return -1;
- }
- while (NULL != fgets(s, 79, f)) {
- p = strstr(s, pattern);
- if (NULL != p) {
- fclose(f);
- return (atoi(p + strlen(pattern)));
+ char s[80];
+ char *p = "/proc/meminfo";
+ FILE *f;
+ const char pattern[] = "MemTotal:";
+
+ if ((f = fopen(p, "r")) < 0) {
+ message(LOG, "Error opening %s: %s\n", p, strerror(errno));
+ return -1;
+ }
+ while (NULL != fgets(s, 79, f)) {
+ p = strstr(s, pattern);
+ if (NULL != p) {
+ fclose(f);
+ return (atoi(p + strlen(pattern)));
+ }
}
- }
- return -1;
+ return -1;
}
static void console_init()
{
- int fd;
- int tried_devcons = 0;
- int tried_vtprimary = 0;
- struct serial_struct sr;
- char *s;
-
- if ((s = getenv("TERM")) != NULL) {
- snprintf(termType,sizeof(termType)-1,"TERM=%s",s);
- }
-
- if ((s = getenv("CONSOLE")) != NULL) {
- snprintf(console, sizeof(console)-1, "%s",s);
- }
-#if #cpu(sparc)
- /* sparc kernel supports console=tty[ab] parameter which is also
- * passed to init, so catch it here */
- else if ((s = getenv("console")) != NULL) {
- /* remap tty[ab] to /dev/ttyS[01] */
- if (strcmp( s, "ttya" )==0)
- snprintf(console, sizeof(console)-1, "%s", SERIAL_CON0);
- else if (strcmp( s, "ttyb" )==0)
- snprintf(console, sizeof(console)-1, "%s", SERIAL_CON1);
- }
-#endif
- else {
- struct vt_stat vt;
+ int fd;
+ int tried_devcons = 0;
+ int tried_vtprimary = 0;
+ struct serial_struct sr;
+ char *s;
+
+ if ((s = getenv("TERM")) != NULL) {
+ snprintf(termType, sizeof(termType) - 1, "TERM=%s", s);
+ }
- /* 2.2 kernels: identify the real console backend and try to use it */
- if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
- /* this is a serial console */
- snprintf(console, sizeof(console)-1, "/dev/ttyS%d", sr.line);
+ if ((s = getenv("CONSOLE")) != NULL) {
+ snprintf(console, sizeof(console) - 1, "%s", s);
}
- else if (ioctl(0, VT_GETSTATE, &vt) == 0) {
- /* this is linux virtual tty */
- snprintf(console, sizeof(console)-1, "/dev/tty%d", vt.v_active);
- } else {
- snprintf(console, sizeof(console)-1, "%s", _PATH_CONSOLE);
- tried_devcons++;
+#if #cpu(sparc)
+ /* sparc kernel supports console=tty[ab] parameter which is also
+ * passed to init, so catch it here */
+ else if ((s = getenv("console")) != NULL) {
+ /* remap tty[ab] to /dev/ttyS[01] */
+ if (strcmp(s, "ttya") == 0)
+ snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON0);
+ else if (strcmp(s, "ttyb") == 0)
+ snprintf(console, sizeof(console) - 1, "%s", SERIAL_CON1);
}
- }
-
- while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
- /* Can't open selected console -- try /dev/console */
- if (!tried_devcons) {
- tried_devcons++;
- snprintf(console, sizeof(console)-1, "%s", _PATH_CONSOLE);
- continue;
+#endif
+ else {
+ struct vt_stat vt;
+
+ /* 2.2 kernels: identify the real console backend and try to use it */
+ if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
+ /* this is a serial console */
+ snprintf(console, sizeof(console) - 1, "/dev/ttyS%d", sr.line);
+ } else if (ioctl(0, VT_GETSTATE, &vt) == 0) {
+ /* this is linux virtual tty */
+ snprintf(console, sizeof(console) - 1, "/dev/tty%d",
+ vt.v_active);
+ } else {
+ snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
+ tried_devcons++;
+ }
}
- /* Can't open selected console -- try vt1 */
- if (!tried_vtprimary) {
- tried_vtprimary++;
- snprintf(console, sizeof(console)-1, "%s", VT_PRIMARY);
- continue;
+
+ while ((fd = open(console, O_RDONLY | O_NONBLOCK)) < 0) {
+ /* Can't open selected console -- try /dev/console */
+ if (!tried_devcons) {
+ tried_devcons++;
+ snprintf(console, sizeof(console) - 1, "%s", _PATH_CONSOLE);
+ continue;
+ }
+ /* Can't open selected console -- try vt1 */
+ if (!tried_vtprimary) {
+ tried_vtprimary++;
+ snprintf(console, sizeof(console) - 1, "%s", VT_PRIMARY);
+ continue;
+ }
+ break;
}
- break;
- }
- if (fd < 0) {
- /* Perhaps we should panic here? */
- snprintf(console, sizeof(console)-1, "/dev/null");
- } else {
- /* check for serial console and disable logging to tty3 & running a
- * shell to tty2 */
- if (ioctl(0,TIOCGSERIAL,&sr) == 0) {
- message(LOG|CONSOLE, "serial console detected. Disabling virtual terminals.\r\n" );
- log = NULL;
- secondConsole = NULL;
+ if (fd < 0) {
+ /* Perhaps we should panic here? */
+ snprintf(console, sizeof(console) - 1, "/dev/null");
+ } else {
+ /* check for serial console and disable logging to tty3 & running a
+ * shell to tty2 */
+ if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
+ message(LOG | CONSOLE,
+ "serial console detected. Disabling virtual terminals.\r\n");
+ log = NULL;
+ secondConsole = NULL;
+ }
+ close(fd);
}
- close(fd);
- }
- message(LOG, "console=%s\n", console );
+ message(LOG, "console=%s\n", console);
}
-static pid_t run(char* command,
- char *terminal, int get_enter)
+static pid_t run(char *command, char *terminal, int get_enter)
{
- int i, fd;
- pid_t pid;
- char* tmpCmd;
- char* cmd[255];
- static const char press_enter[] =
- "\nPlease press Enter to activate this console. ";
- char* environment[] = {
- "HOME=/",
- "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
- "SHELL=/bin/sh",
- termType,
- "USER=root",
- 0
- };
-
-
- if ((pid = fork()) == 0) {
- pid_t shell_pgid = getpid ();
-
- /* Clean up */
- close(0);
- close(1);
- close(2);
- setsid();
+ int i, fd;
+ pid_t pid;
+ char *tmpCmd;
+ char *cmd[255];
+ static const char press_enter[] =
+
+ "\nPlease press Enter to activate this console. ";
+ char *environment[] = {
+ "HOME=/",
+ "PATH=/usr/bin:/bin:/usr/sbin:/sbin",
+ "SHELL=/bin/sh",
+ termType,
+ "USER=root",
+ 0
+ };
- /* Reset signal handlers set for parent process */
- signal(SIGUSR1, SIG_DFL);
- signal(SIGUSR2, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGHUP, SIG_DFL);
- if ((fd = device_open(terminal, O_RDWR)) < 0) {
- message(LOG|CONSOLE, "Bummer, can't open %s\r\n", terminal);
- exit(1);
- }
- dup2(fd, 0);
- dup2(fd, 1);
- dup2(fd, 2);
- tcsetpgrp (0, getpgrp());
- set_term(0);
+ if ((pid = fork()) == 0) {
+ pid_t shell_pgid = getpid();
- if (get_enter==TRUE) {
- /*
- * Save memory by not exec-ing anything large (like a shell)
- * before the user wants it. This is critical if swap is not
- * enabled and the system has low memory. Generally this will
- * be run on the second virtual console, and the first will
- * be allowed to start a shell or whatever an init script
- * specifies.
- */
- char c;
- message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
- command, shell_pgid, terminal );
- write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
- read(fileno(stdin), &c, 1);
- }
+ /* Clean up */
+ close(0);
+ close(1);
+ close(2);
+ setsid();
+
+ /* Reset signal handlers set for parent process */
+ signal(SIGUSR1, SIG_DFL);
+ signal(SIGUSR2, SIG_DFL);
+ signal(SIGINT, SIG_DFL);
+ signal(SIGTERM, SIG_DFL);
+ signal(SIGHUP, SIG_DFL);
+
+ if ((fd = device_open(terminal, O_RDWR)) < 0) {
+ message(LOG | CONSOLE, "Bummer, can't open %s\r\n", terminal);
+ exit(1);
+ }
+ dup2(fd, 0);
+ dup2(fd, 1);
+ dup2(fd, 2);
+ tcsetpgrp(0, getpgrp());
+ set_term(0);
+
+ if (get_enter == TRUE) {
+ /*
+ * Save memory by not exec-ing anything large (like a shell)
+ * before the user wants it. This is critical if swap is not
+ * enabled and the system has low memory. Generally this will
+ * be run on the second virtual console, and the first will
+ * be allowed to start a shell or whatever an init script
+ * specifies.
+ */
+ char c;
+
+ message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
+ command, shell_pgid, terminal);
+ write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
+ read(fileno(stdin), &c, 1);
+ }
- /* Log the process name and args */
- message(LOG, "Starting pid %d, console %s: '",
- shell_pgid, terminal, command);
-
- /* Convert command (char*) into cmd (char**, one word per string) */
- for (tmpCmd=command, i=0; (tmpCmd=strsep(&command, " \t")) != NULL;) {
- if (*tmpCmd != '\0') {
- cmd[i] = tmpCmd;
- message(LOG, "%s ", tmpCmd);
- tmpCmd++;
- i++;
- }
+ /* Log the process name and args */
+ message(LOG, "Starting pid %d, console %s: '",
+ shell_pgid, terminal, command);
+
+ /* Convert command (char*) into cmd (char**, one word per string) */
+ for (tmpCmd = command, i = 0;
+ (tmpCmd = strsep(&command, " \t")) != NULL;) {
+ if (*tmpCmd != '\0') {
+ cmd[i] = tmpCmd;
+#ifdef DEBUG_INIT
+ message(LOG, "%s ", tmpCmd);
+#endif
+ tmpCmd++;
+ i++;
+ }
+ }
+ cmd[i] = NULL;
+ message(LOG, "'\r\n");
+
+ /* Now run it. The new program will take over this PID,
+ * so nothing further in init.c should be run. */
+ execve(cmd[0], cmd, environment);
+
+ /* We're still here? Some error happened. */
+ message(LOG | CONSOLE, "Bummer, could not run '%s': %s\n", cmd[0],
+ strerror(errno));
+ exit(-1);
}
- cmd[i] = NULL;
- message(LOG, "'\r\n");
-
- /* Now run it. The new program will take over this PID,
- * so nothing further in init.c should be run. */
- execve(cmd[0], cmd, environment);
-
- /* We're still here? Some error happened. */
- message(LOG|CONSOLE, "Bummer, could not run '%s': %s\n", cmd[0],
- strerror(errno));
- exit(-1);
- }
- return pid;
+ return pid;
}
-static int waitfor(char* command,
- char *terminal, int get_enter)
+static int waitfor(char *command, char *terminal, int get_enter)
{
- int status, wpid;
- int pid = run( command, terminal, get_enter);
-
- while (1) {
- wpid = wait(&status);
- if (wpid > 0 ) {
- message(LOG, "Process '%s' (pid %d) exited.\n",
- command, wpid);
- break;
+ int status, wpid;
+ int pid = run(command, terminal, get_enter);
+
+ while (1) {
+ wpid = wait(&status);
+ if (wpid > 0) {
+ message(LOG, "Process '%s' (pid %d) exited.\n", command, wpid);
+ break;
+ }
+ if (wpid == pid)
+ break;
}
- if (wpid == pid )
- break;
- }
- return wpid;
+ return wpid;
}
/* Make sure there is enough memory to do something useful. *
* Calls swapon if needed so be sure /proc is mounted. */
static void check_memory()
{
- struct stat statBuf;
-
- if (mem_total() > 3500)
+ struct stat statBuf;
+
+ if (mem_total() > 3500)
+ return;
+
+ if (stat("/etc/fstab", &statBuf) == 0) {
+ /* Try to turn on swap */
+ waitfor("/bin/swapon swapon -a", log, FALSE);
+ if (mem_total() < 3500)
+ goto goodnight;
+ } else
+ goto goodnight;
return;
- if (stat("/etc/fstab", &statBuf) == 0) {
- /* Try to turn on swap */
- waitfor("/bin/swapon swapon -a", log, FALSE);
- if (mem_total() < 3500)
- goto goodnight;
- } else
- goto goodnight;
- return;
-
-goodnight:
- message(CONSOLE, "Sorry, your computer does not have enough memory.\r\n");
- while (1) sleep(1);
+ goodnight:
+ message(CONSOLE,
+ "Sorry, your computer does not have enough memory.\r\n");
+ while (1)
+ sleep(1);
}
#ifndef DEBUG_INIT
static void shutdown_system(void)
{
- /* first disable our SIGHUP signal */
- signal(SIGHUP, SIG_DFL);
-
- /* Allow Ctrl-Alt-Del to reboot system. */
- reboot(RB_ENABLE_CAD);
- message(CONSOLE, "\r\nThe system is going down NOW !!\r\n");
- sync();
-
- /* Send signals to every process _except_ pid 1 */
- message(CONSOLE, "Sending SIGTERM to all processes.\r\n");
- kill(-1, SIGTERM);
- sleep(5);
- sync();
-
- message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
- kill(-1, SIGKILL);
- sleep(5);
-
- message(CONSOLE, "Disabling swap.\r\n");
- waitfor( "swapoff -a", console, FALSE);
- message(CONSOLE, "Unmounting filesystems.\r\n");
+ /* first disable our SIGHUP signal */
+ signal(SIGHUP, SIG_DFL);
+
+ /* Allow Ctrl-Alt-Del to reboot system. */
+ reboot(RB_ENABLE_CAD);
+ message(CONSOLE, "\r\nThe system is going down NOW !!\r\n");
+ sync();
+
+ /* Send signals to every process _except_ pid 1 */
+ message(CONSOLE, "Sending SIGTERM to all processes.\r\n");
+ kill(-1, SIGTERM);
+ sleep(5);
+ sync();
+
+ message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
+ kill(-1, SIGKILL);
+ sleep(5);
+
+ message(CONSOLE, "Disabling swap.\r\n");
+ waitfor("swapoff -a", console, FALSE);
+ message(CONSOLE, "Unmounting filesystems.\r\n");
waitfor("umount -a -r", console, FALSE);
- sync();
- if (kernelVersion > 0 && kernelVersion <= 2 * 65536 + 2 * 256 + 11) {
- /* bdflush, kupdate not needed for kernels >2.2.11 */
- bdflush(1, 0);
sync();
- }
+ if (kernelVersion > 0 && kernelVersion <= 2 * 65536 + 2 * 256 + 11) {
+ /* bdflush, kupdate not needed for kernels >2.2.11 */
+ bdflush(1, 0);
+ sync();
+ }
}
static void halt_signal(int sig)
{
- shutdown_system();
- message(CONSOLE, "The system is halted. Press %s or turn off power\r\n",
- (secondConsole == NULL) /* serial console */
- ? "Reset" : "CTRL-ALT-DEL");
- sync();
+ shutdown_system();
+ message(CONSOLE,
+ "The system is halted. Press %s or turn off power\r\n",
+ (secondConsole == NULL) /* serial console */
+ ? "Reset" : "CTRL-ALT-DEL");
+ sync();
- /* allow time for last message to reach serial console */
- sleep(5);
+ /* allow time for last message to reach serial console */
+ sleep(5);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
- if (sig == SIGUSR2)
- reboot(RB_POWER_OFF);
- else
+ if (sig == SIGUSR2)
+ reboot(RB_POWER_OFF);
+ else
#endif
- reboot(RB_HALT_SYSTEM);
- exit(0);
+ reboot(RB_HALT_SYSTEM);
+ exit(0);
}
static void reboot_signal(int sig)
{
- shutdown_system();
- message(CONSOLE, "Please stand by while rebooting the system.\r\n");
- sync();
+ shutdown_system();
+ message(CONSOLE, "Please stand by while rebooting the system.\r\n");
+ sync();
- /* allow time for last message to reach serial console */
- sleep(2);
+ /* allow time for last message to reach serial console */
+ sleep(2);
- reboot(RB_AUTOBOOT);
- exit(0);
+ reboot(RB_AUTOBOOT);
+ exit(0);
}
#if defined BB_FEATURE_INIT_CHROOT
static void check_chroot(int sig)
{
- char *argv_init[2] = { "init", NULL, };
- char *envp_init[3] = { "HOME=/", "TERM=linux", NULL, };
- char rootpath[256], *tc;
- int fd;
+ char *argv_init[2] = { "init", NULL, };
+ char *envp_init[3] = { "HOME=/", "TERM=linux", NULL, };
+ char rootpath[256], *tc;
+ int fd;
+
+ if ((fd = open("/proc/sys/kernel/init-chroot", O_RDONLY)) == -1) {
+ message(CONSOLE,
+ "SIGHUP recived, but could not open proc file\r\n");
+ sleep(2);
+ return;
+ }
+ if (read(fd, rootpath, sizeof(rootpath)) == -1) {
+ message(CONSOLE,
+ "SIGHUP recived, but could not read proc file\r\n");
+ sleep(2);
+ return;
+ }
+ close(fd);
- if ((fd = open("/proc/sys/kernel/init-chroot", O_RDONLY)) == -1) {
- message(CONSOLE, "SIGHUP recived, but could not open proc file\r\n");
- sleep(2);
- return;
- }
- if (read(fd, rootpath, sizeof(rootpath)) == -1) {
- message(CONSOLE, "SIGHUP recived, but could not read proc file\r\n");
+ if (rootpath[0] == '\0') {
+ message(CONSOLE,
+ "SIGHUP recived, but new root is not valid: %s\r\n",
+ rootpath);
+ sleep(2);
+ return;
+ }
+
+ tc = strrchr(rootpath, '\n');
+ *tc = '\0';
+
+ /* Ok, making it this far means we commit */
+ message(CONSOLE, "Please stand by, changing root to `%s'.\r\n",
+ rootpath);
+
+ /* kill all other programs first */
+ message(CONSOLE, "Sending SIGTERM to all processes.\r\n");
+ kill(-1, SIGTERM);
sleep(2);
- return;
- }
- close(fd);
+ sync();
- if (rootpath[0] == '\0') {
- message(CONSOLE, "SIGHUP recived, but new root is not valid: %s\r\n",
- rootpath);
+ message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
+ kill(-1, SIGKILL);
sleep(2);
+ sync();
+
+ /* ok, we don't need /proc anymore. we also assume that the signaling
+ * process left the rest of the filesystems alone for us */
+ umount("/proc");
+
+ /* Ok, now we chroot. Hopefully we only have two things mounted, the
+ * new chroot'd mount point, and the old "/" mount. s,
+ * we go ahead and unmount the old "/". This should trigger the kernel
+ * to set things up the Right Way(tm). */
+
+ if (!chroot(rootpath))
+ umount("/dev/root");
+
+ /* If the chroot fails, we are already too far to turn back, so we
+ * continue and hope that executing init below will revive the system */
+
+ /* close all of our descriptors and open new ones */
+ close(0);
+ close(1);
+ close(2);
+ open("/dev/console", O_RDWR, 0);
+ dup(0);
+ dup(0);
+
+ message(CONSOLE, "Executing real init...\r\n");
+ /* execute init in the (hopefully) new root */
+ execve("/sbin/init", argv_init, envp_init);
+
+ message(CONSOLE,
+ "ERROR: Could not exec new init. Press %s to reboot.\r\n",
+ (secondConsole == NULL) /* serial console */
+ ? "Reset" : "CTRL-ALT-DEL");
return;
- }
-
- tc = strrchr(rootpath, '\n');
- *tc = '\0';
-
- /* Ok, making it this far means we commit */
- message(CONSOLE, "Please stand by, changing root to `%s'.\r\n", rootpath);
-
- /* kill all other programs first */
- message(CONSOLE, "Sending SIGTERM to all processes.\r\n");
- kill(-1, SIGTERM);
- sleep(2);
- sync();
-
- message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
- kill(-1, SIGKILL);
- sleep(2);
- sync();
-
- /* ok, we don't need /proc anymore. we also assume that the signaling
- * process left the rest of the filesystems alone for us */
- umount("/proc");
-
- /* Ok, now we chroot. Hopefully we only have two things mounted, the
- * new chroot'd mount point, and the old "/" mount. s,
- * we go ahead and unmount the old "/". This should trigger the kernel
- * to set things up the Right Way(tm). */
-
- if (!chroot(rootpath))
- umount("/dev/root");
-
- /* If the chroot fails, we are already too far to turn back, so we
- * continue and hope that executing init below will revive the system */
-
- /* close all of our descriptors and open new ones */
- close(0);
- close(1);
- close(2);
- open("/dev/console", O_RDWR, 0);
- dup(0);
- dup(0);
-
- message(CONSOLE, "Executing real init...\r\n");
- /* execute init in the (hopefully) new root */
- execve("/sbin/init",argv_init,envp_init);
-
- message(CONSOLE, "ERROR: Could not exec new init. Press %s to reboot.\r\n",
- (secondConsole == NULL) /* serial console */
- ? "Reset" : "CTRL-ALT-DEL");
- return;
-}
-#endif /* BB_FEATURE_INIT_CHROOT */
-
-#endif /* ! DEBUG_INIT */
-
-void new_initAction (initActionEnum action,
- char* process, char* cons)
-{
- initAction* newAction;
-
- 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"))
- return;
+}
+#endif /* BB_FEATURE_INIT_CHROOT */
- newAction = calloc ((size_t)(1), sizeof(initAction));
- if (!newAction) {
- message(LOG|CONSOLE,"Memory allocation failure\n");
- while (1) sleep(1);
- }
- newAction->nextPtr = initActionList;
- initActionList = newAction;
- strncpy( newAction->process, process, 255);
- newAction->action = action;
- strncpy(newAction->console, cons, 255);
- newAction->pid = 0;
+#endif /* ! DEBUG_INIT */
+
+void new_initAction(initActionEnum action, char *process, char *cons)
+{
+ initAction *newAction;
+
+ 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"))
+ return;
+
+ newAction = calloc((size_t) (1), sizeof(initAction));
+ if (!newAction) {
+ message(LOG | CONSOLE, "Memory allocation failure\n");
+ while (1)
+ sleep(1);
+ }
+ newAction->nextPtr = initActionList;
+ initActionList = newAction;
+ strncpy(newAction->process, process, 255);
+ newAction->action = action;
+ strncpy(newAction->console, cons, 255);
+ newAction->pid = 0;
// message(LOG|CONSOLE, "process='%s' action='%d' console='%s'\n",
-// newAction->process, newAction->action, newAction->console);
+// newAction->process, newAction->action, newAction->console);
}
-void delete_initAction (initAction *action)
+void delete_initAction(initAction * action)
{
- initAction *a, *b=NULL;
- for( a=initActionList ; a ; b=a, a=a->nextPtr) {
- if (a == action) {
- if (b==NULL) {
- initActionList=a->nextPtr;
- } else {
- b->nextPtr=a->nextPtr;
- }
- free( a);
- break;
+ initAction *a, *b = NULL;
+
+ for (a = initActionList; a; b = a, a = a->nextPtr) {
+ if (a == action) {
+ if (b == NULL) {
+ initActionList = a->nextPtr;
+ } else {
+ b->nextPtr = a->nextPtr;
+ }
+ free(a);
+ break;
+ }
}
- }
}
/* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
@@ -639,253 +655,258 @@ void delete_initAction (initAction *action)
* _is_ defined, but /etc/inittab is missing, this
* results in the same set of default behaviors.
* */
-void parse_inittab(void)
+void parse_inittab(void)
{
#ifdef BB_FEATURE_USE_INITTAB
- FILE* file;
- char buf[256], lineAsRead[256], tmpConsole[256];
- char *p, *q, *r, *s;
- const struct initActionType *a = actions;
- int foundIt;
+ FILE *file;
+ char buf[256], lineAsRead[256], tmpConsole[256];
+ char *p, *q, *r, *s;
+ const struct initActionType *a = actions;
+ int foundIt;
- file = fopen(INITTAB, "r");
- if (file == NULL) {
- /* No inittab file -- set up some default behavior */
+ file = fopen(INITTAB, "r");
+ if (file == NULL) {
+ /* No inittab file -- set up some default behavior */
#endif
- /* Askfirst shell on tty1 */
- new_initAction( ASKFIRST, SHELL, console );
- /* Askfirst shell on tty2 */
- if (secondConsole != NULL)
- new_initAction( ASKFIRST, SHELL, secondConsole );
- /* sysinit */
- new_initAction( SYSINIT, INIT_SCRIPT, console );
-
- return;
+ /* Askfirst shell on tty1 */
+ new_initAction(ASKFIRST, SHELL, console);
+ /* Askfirst shell on tty2 */
+ if (secondConsole != NULL)
+ new_initAction(ASKFIRST, SHELL, secondConsole);
+ /* sysinit */
+ new_initAction(SYSINIT, INIT_SCRIPT, console);
+
+ return;
#ifdef BB_FEATURE_USE_INITTAB
- }
-
- while ( fgets(buf, 255, file) != NULL) {
- foundIt=FALSE;
- for(p = buf; *p == ' ' || *p == '\t'; p++);
- if (*p == '#' || *p == '\n') continue;
-
- /* Trim the trailing \n */
- q = strrchr( p, '\n');
- if (q != NULL)
- *q='\0';
-
- /* Keep a copy around for posterity's sake (and error msgs) */
- strcpy(lineAsRead, buf);
-
- /* Grab the ID field */
- s=p;
- p = strchr( p, ':');
- if ( p != NULL || *(p+1) != '\0' ) {
- *p='\0';
- ++p;
}
- /* Now peal off the process field from the end
- * of the string */
- q = strrchr( p, ':');
- if ( q == NULL || *(q+1) == '\0' ) {
- message(LOG|CONSOLE,"Bad inittab entry: %s\n", lineAsRead);
- continue;
- } else {
- *q='\0';
- ++q;
- }
+ while (fgets(buf, 255, file) != NULL) {
+ foundIt = FALSE;
+ for (p = buf; *p == ' ' || *p == '\t'; p++);
+ if (*p == '#' || *p == '\n')
+ continue;
+
+ /* Trim the trailing \n */
+ q = strrchr(p, '\n');
+ if (q != NULL)
+ *q = '\0';
+
+ /* Keep a copy around for posterity's sake (and error msgs) */
+ strcpy(lineAsRead, buf);
+
+ /* Grab the ID field */
+ s = p;
+ p = strchr(p, ':');
+ if (p != NULL || *(p + 1) != '\0') {
+ *p = '\0';
+ ++p;
+ }
- /* Now peal off the action field */
- r = strrchr( p, ':');
- if ( r == NULL || *(r+1) == '\0') {
- message(LOG|CONSOLE,"Bad inittab entry: %s\n", lineAsRead);
- continue;
- } else {
- ++r;
- }
+ /* Now peal off the process field from the end
+ * of the string */
+ q = strrchr(p, ':');
+ if (q == NULL || *(q + 1) == '\0') {
+ message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
+ continue;
+ } else {
+ *q = '\0';
+ ++q;
+ }
- /* Ok, now process it */
- a = actions;
- while (a->name != 0) {
- if (strcmp(a->name, r) == 0) {
- if (*s != '\0') {
- struct stat statBuf;
- strcpy(tmpConsole, "/dev/");
- strncat(tmpConsole, s, 200);
- if (stat(tmpConsole, &statBuf) != 0) {
- message(LOG|CONSOLE, "device '%s' does not exist. Did you read the directions?\n", tmpConsole);
- break;
- }
- s = tmpConsole;
+ /* Now peal off the action field */
+ r = strrchr(p, ':');
+ if (r == NULL || *(r + 1) == '\0') {
+ message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
+ continue;
+ } else {
+ ++r;
+ }
+
+ /* Ok, now process it */
+ a = actions;
+ while (a->name != 0) {
+ if (strcmp(a->name, r) == 0) {
+ if (*s != '\0') {
+ struct stat statBuf;
+
+ strcpy(tmpConsole, "/dev/");
+ strncat(tmpConsole, s, 200);
+ if (stat(tmpConsole, &statBuf) != 0) {
+ message(LOG | CONSOLE,
+ "device '%s' does not exist. Did you read the directions?\n",
+ tmpConsole);
+ break;
+ }
+ s = tmpConsole;
+ }
+ new_initAction(a->action, q, s);
+ foundIt = TRUE;
+ }
+ a++;
+ }
+ if (foundIt == TRUE)
+ continue;
+ else {
+ /* Choke on an unknown action */
+ message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
}
- new_initAction( a->action, q, s);
- foundIt=TRUE;
- }
- a++;
- }
- if (foundIt==TRUE)
- continue;
- else {
- /* Choke on an unknown action */
- message(LOG|CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
}
- }
- return;
+ return;
#endif
}
extern int init_main(int argc, char **argv)
{
- initAction *a;
- pid_t wpid;
- int status;
+ initAction *a;
+ pid_t wpid;
+ int status;
#ifndef DEBUG_INIT
- /* Expect to be PID 1 if we are run as init (not linuxrc) */
- if (getpid() != 1 && strstr(argv[0], "init")!=NULL ) {
- usage( "init\n\nInit is the parent of all processes.\n\n"
- "This version of init is designed to be run only by the kernel\n");
- }
- /* Fix up argv[0] to be certain we claim to be init */
- strncpy(argv[0], "init", strlen(argv[0]));
-
- /* Set up sig handlers -- be sure to
- * clear all of these in run() */
- signal(SIGUSR1, halt_signal);
- signal(SIGUSR2, reboot_signal);
- signal(SIGINT, reboot_signal);
- signal(SIGTERM, reboot_signal);
+ /* Expect to be PID 1 if we are run as init (not linuxrc) */
+ if (getpid() != 1 && strstr(argv[0], "init") != NULL) {
+ usage("init\n\nInit is the parent of all processes.\n\n"
+ "This version of init is designed to be run only by the kernel\n");
+ }
+ /* Fix up argv[0] to be certain we claim to be init */
+ strncpy(argv[0], "init", strlen(argv[0]));
+
+ /* Set up sig handlers -- be sure to
+ * clear all of these in run() */
+ signal(SIGUSR1, halt_signal);
+ signal(SIGUSR2, reboot_signal);
+ signal(SIGINT, reboot_signal);
+ signal(SIGTERM, reboot_signal);
#if defined BB_FEATURE_INIT_CHROOT
- signal(SIGHUP, check_chroot);
+ signal(SIGHUP, check_chroot);
#endif
- /* Turn off rebooting via CTL-ALT-DEL -- we get a
- * SIGINT on CAD so we can shut things down gracefully... */
- reboot(RB_DISABLE_CAD);
-#endif
+ /* Turn off rebooting via CTL-ALT-DEL -- we get a
+ * SIGINT on CAD so we can shut things down gracefully... */
+ reboot(RB_DISABLE_CAD);
+#endif
- /* Figure out where the default console should be */
- console_init();
+ /* 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);
- set_term(0);
- setsid();
+ /* Close whatever files are open, and reset the console. */
+ close(0);
+ close(1);
+ close(2);
+ set_term(0);
+ setsid();
- /* Make sure PATH is set to something sane */
- putenv(_PATH_STDPATH);
+ /* Make sure PATH is set to something sane */
+ putenv(_PATH_STDPATH);
- /* Hello world */
+ /* Hello world */
#ifndef DEBUG_INIT
- message(LOG|CONSOLE,
- "init started: BusyBox v%s (%s) multi-call binary\r\n",
- BB_VER, BB_BT);
+ message(LOG | CONSOLE,
+ "init started: BusyBox v%s (%s) multi-call binary\r\n",
+ BB_VER, BB_BT);
#else
- message(LOG|CONSOLE,
- "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n",
- getpid(), BB_VER, BB_BT);
+ message(LOG | CONSOLE,
+ "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n",
+ getpid(), BB_VER, BB_BT);
#endif
-
- /* Mount /proc */
- if (mount ("proc", "/proc", "proc", 0, 0) == 0) {
- message(LOG|CONSOLE, "Mounting /proc: done.\n");
- kernelVersion = get_kernel_revision();
- } else
- message(LOG|CONSOLE, "Mounting /proc: failed!\n");
-
- /* Make sure there is enough memory to do something useful. */
- check_memory();
-
- /* Check if we are supposed to be in single user mode */
- if ( argc > 1 && (!strcmp(argv[1], "single") ||
- !strcmp(argv[1], "-s") || !strcmp(argv[1], "1")))
- {
- /* Ask first then start a shell on tty2 */
- if (secondConsole != NULL)
- new_initAction( ASKFIRST, SHELL, secondConsole);
- /* Start a shell on tty1 */
- new_initAction( RESPAWN, SHELL, console);
- } else {
- /* Not in single user mode -- see what inittab says */
-
- /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
- * then parse_inittab() simply adds in some default
- * actions(i.e runs INIT_SCRIPT and then starts a pair
- * of "askfirst" shells */
- parse_inittab();
- }
-
- /* Now run everything that needs to be run */
-
- /* First run the sysinit command */
- for( a=initActionList ; a; a=a->nextPtr) {
- if (a->action == SYSINIT) {
- waitfor(a->process, a->console, FALSE);
- /* Now remove the "sysinit" entry from the list */
- delete_initAction( a);
+
+ /* Mount /proc */
+ if (mount("proc", "/proc", "proc", 0, 0) == 0) {
+ message(LOG | CONSOLE, "Mounting /proc: done.\n");
+ kernelVersion = get_kernel_revision();
+ } else
+ message(LOG | CONSOLE, "Mounting /proc: failed!\n");
+
+ /* Make sure there is enough memory to do something useful. */
+ check_memory();
+
+ /* Check if we are supposed to be in single user mode */
+ if (argc > 1 && (!strcmp(argv[1], "single") ||
+ !strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
+ /* Ask first then start a shell on tty2 */
+ if (secondConsole != NULL)
+ new_initAction(ASKFIRST, SHELL, secondConsole);
+ /* Start a shell on tty1 */
+ new_initAction(RESPAWN, SHELL, console);
+ } else {
+ /* Not in single user mode -- see what inittab says */
+
+ /* NOTE that if BB_FEATURE_USE_INITTAB is NOT defined,
+ * then parse_inittab() simply adds in some default
+ * actions(i.e runs INIT_SCRIPT and then starts a pair
+ * of "askfirst" shells */
+ parse_inittab();
}
- }
- /* Next run anything that wants to block */
- for( a=initActionList ; a; a=a->nextPtr) {
- if (a->action == WAIT) {
- waitfor(a->process, a->console, FALSE);
- /* Now remove the "wait" entry from the list */
- delete_initAction( a);
+
+ /* Now run everything that needs to be run */
+
+ /* First run the sysinit command */
+ for (a = initActionList; a; a = a->nextPtr) {
+ if (a->action == SYSINIT) {
+ waitfor(a->process, a->console, FALSE);
+ /* Now remove the "sysinit" entry from the list */
+ delete_initAction(a);
+ }
}
- }
- /* Next run anything to be run only once */
- for( a=initActionList ; a; a=a->nextPtr) {
- if (a->action == ONCE) {
- run(a->process, a->console, FALSE);
- /* Now remove the "once" entry from the list */
- delete_initAction( a);
+ /* Next run anything that wants to block */
+ for (a = initActionList; a; a = a->nextPtr) {
+ if (a->action == WAIT) {
+ waitfor(a->process, a->console, FALSE);
+ /* Now remove the "wait" entry from the list */
+ delete_initAction(a);
+ }
}
- }
- /* If there is nothing else to do, stop */
- if (initActionList == NULL) {
- message(LOG|CONSOLE, "No more tasks for init -- sleeping forever.\n");
- while (1) sleep(1);
- }
-
- /* Now run the looping stuff for the rest of forever */
- while (1) {
- for( a=initActionList ; a; a=a->nextPtr) {
- /* Only run stuff with pid==0. If they have
- * a pid, that means they are still running */
- if (a->pid == 0) {
- switch(a->action) {
- case RESPAWN:
- /* run the respawn stuff */
- a->pid = run(a->process, a->console, FALSE);
- break;
- case ASKFIRST:
- /* run the askfirst stuff */
- a->pid = run(a->process, a->console, TRUE);
- break;
- /* silence the compiler's incessant whining */
- default:
- break;
+ /* Next run anything to be run only once */
+ for (a = initActionList; a; a = a->nextPtr) {
+ if (a->action == ONCE) {
+ run(a->process, a->console, FALSE);
+ /* Now remove the "once" entry from the list */
+ delete_initAction(a);
}
- }
}
- /* Wait for a child process to exit */
- wpid = wait(&status);
- if (wpid > 0 ) {
- /* Find out who died and clean up their corpse */
- for( a=initActionList ; a; a=a->nextPtr) {
- if (a->pid==wpid) {
- a->pid=0;
- message(LOG, "Process '%s' (pid %d) exited. Scheduling it for restart.\n",
- a->process, wpid);
+ /* If there is nothing else to do, stop */
+ if (initActionList == NULL) {
+ message(LOG | CONSOLE,
+ "No more tasks for init -- sleeping forever.\n");
+ while (1)
+ sleep(1);
+ }
+
+ /* Now run the looping stuff for the rest of forever */
+ while (1) {
+ for (a = initActionList; a; a = a->nextPtr) {
+ /* Only run stuff with pid==0. If they have
+ * a pid, that means they are still running */
+ if (a->pid == 0) {
+ switch (a->action) {
+ case RESPAWN:
+ /* run the respawn stuff */
+ a->pid = run(a->process, a->console, FALSE);
+ break;
+ case ASKFIRST:
+ /* run the askfirst stuff */
+ a->pid = run(a->process, a->console, TRUE);
+ break;
+ /* silence the compiler's incessant whining */
+ default:
+ break;
+ }
+ }
+ }
+ /* Wait for a child process to exit */
+ wpid = wait(&status);
+ if (wpid > 0) {
+ /* Find out who died and clean up their corpse */
+ for (a = initActionList; a; a = a->nextPtr) {
+ if (a->pid == wpid) {
+ a->pid = 0;
+ message(LOG,
+ "Process '%s' (pid %d) exited. Scheduling it for restart.\n",
+ a->process, wpid);
+ }
+ }
}
- }
+ sleep(1);
}
- sleep(1);
- }
}
-
diff --git a/init/poweroff.c b/init/poweroff.c
index 405ca3f..7f9abf1 100644
--- a/init/poweroff.c
+++ b/init/poweroff.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
/*
* Mini poweroff implementation for busybox
*
@@ -23,9 +24,8 @@
#include "internal.h"
#include <signal.h>
-extern int
-poweroff_main(int argc, char ** argv)
+extern int poweroff_main(int argc, char **argv)
{
- /* don't assume init's pid == 1 */
- exit( kill(findInitPid(), SIGUSR2));
+ /* don't assume init's pid == 1 */
+ exit(kill(findInitPid(), SIGUSR2));
}
diff --git a/init/reboot.c b/init/reboot.c
index 1339a60..ef2a848 100644
--- a/init/reboot.c
+++ b/init/reboot.c
@@ -1,3 +1,4 @@
+/* vi: set sw=4 ts=4: */
/*
* Mini reboot implementation for busybox
*
@@ -23,9 +24,8 @@
#include "internal.h"
#include <signal.h>
-extern int
-reboot_main(int argc, char ** argv)
+extern int reboot_main(int argc, char **argv)
{
- /* don't assume init's pid == 1 */
- exit( kill(findInitPid(), SIGINT));
+ /* don't assume init's pid == 1 */
+ exit(kill(findInitPid(), SIGINT));
}
generated by cgit v1.1 at 2024-12-26 03:19:52 +0000