*/
#include "internal.h"
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <unistd.h>
+#include <asm/types.h>
#include <errno.h>
-#include <signal.h>
-#include <termios.h>
+#include <linux/serial.h> /* for serial_struct */
+#include <linux/version.h>
#include <paths.h>
-#include <sys/types.h>
-#include <sys/fcntl.h>
-#include <sys/wait.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
#include <string.h>
+#include <sys/fcntl.h>
+#include <sys/ioctl.h>
+#include <sys/kdaemon.h>
#include <sys/mount.h>
#include <sys/reboot.h>
-#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 <sys/ioctl.h>
#include <sys/sysinfo.h> /* For check_free_memory() */
-#include <linux/version.h>
#ifdef BB_SYSLOGD
-#include <sys/syslog.h>
+# include <sys/syslog.h>
+#endif
+#include <sys/sysmacros.h>
+#include <sys/types.h>
+#include <sys/vt.h> /* for vt_stat */
+#include <sys/wait.h>
+#include <termios.h>
+#include <unistd.h>
+
+
+#if defined BB_FEATURE_INIT_COREDUMPS
+/*
+ * When a file named CORE_ENABLE_FLAG_FILE exists, setrlimit is called
+ * before processes are spawned to set core file size as unlimited.
+ * This is for debugging only. Don't use this is production, unless
+ * you want core dumps lying about....
+ */
+#define CORE_ENABLE_FLAG_FILE "/.init_enable_core"
+#include <sys/resource.h>
+#include <sys/time.h>
#endif
#ifndef KERNEL_VERSION
#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
-#define CONSOLE 0x2
+#define LOG 0x1
+#define CONSOLE 0x2
/* Allowed init action types */
typedef enum {
CTRLALTDEL
} initActionEnum;
-/* And now a list of the actions we support in the version of init */
+/* A mapping between "inittab" action name strings and action type codes. */
typedef struct initActionType {
const char *name;
initActionEnum action;
{0}
};
-/* Set up a linked list of initactions, to be read from inittab */
+/* Set up a linked list of initActions, to be read from inittab */
typedef struct initActionTag initAction;
struct initActionTag {
pid_t pid;
static char *secondConsole = VT_SECONDARY;
-static char *log = VT_LOG;
-static int kernelVersion = 0;
-static char termType[32] = "TERM=linux";
-static char console[32] = _PATH_CONSOLE;
+static char *log = VT_LOG;
+static int kernelVersion = 0;
+static char termType[32] = "TERM=linux";
+static char console[32] = _PATH_CONSOLE;
+
static void delete_initAction(initAction * action);
-/* print a message to the specified device:
- * device may be bitwise-or'd from LOG | CONSOLE */
-void message(int device, char *fmt, ...)
+/* Print a message to the specified device.
+ * Device may be bitwise-or'd from LOG | CONSOLE */
+static void message(int device, char *fmt, ...)
{
va_list arguments;
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'
- };
tcgetattr(fd, &tty);
/* set control chars */
- memcpy(tty.c_cc, control_characters, sizeof(control_characters));
+ 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 */
/* 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;
+ tty.c_cflag &= CBAUD|CBAUDEX|CSIZE|CSTOPB|PARENB|PARODD;
+ tty.c_cflag |= HUPCL|CLOCAL;
/* input modes */
tty.c_iflag = ICRNL | IXON | IXOFF;
return -1;
}
- return(info.freeram/1024);
-
+ return((info.totalram+info.totalswap)/1024);
}
static void console_init()
int fd;
int tried_devcons = 0;
int tried_vtprimary = 0;
+ struct vt_stat vt;
struct serial_struct sr;
char *s;
}
#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 */
if ((pid = fork()) == 0) {
-#ifdef DEBUG_INIT
- pid_t shell_pgid = getpid();
-#endif
-
/* Clean up */
close(0);
close(1);
* specifies.
*/
char c;
-
#ifdef DEBUG_INIT
+ pid_t shell_pgid = getpid();
message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
command, shell_pgid, terminal);
#endif
cmd[i] = NULL;
}
+#if defined BB_FEATURE_INIT_COREDUMPS
+ {
+ struct stat sb;
+ 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);
+ }
+ }
+#endif
+
/* 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);
++p;
}
- /* Now peal off the process field from the end
+ /* Now peel off the process field from the end
* of the string */
q = strrchr(p, ':');
if (q == NULL || *(q + 1) == '\0') {
++q;
}
- /* Now peal off the action field */
+ /* Now peel off the action field */
r = strrchr(p, ':');
if (r == NULL || *(r + 1) == '\0') {
message(LOG | CONSOLE, "Bad inittab entry: %s\n", lineAsRead);
}
}
return;
-#endif
+#endif /* BB_FEATURE_USE_INITTAB */
}
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");
+ /* Expect to be invoked as init with PID=1 or be invoked as linuxrc */
+ if (getpid() != 1
+#ifdef BB_FEATURE_LINUXRC
+ && strstr(argv[0], "linuxrc") == NULL
+#endif
+ )
+ {
+ 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");
}
/* Set up sig handlers -- be sure to
* clear all of these in run() */
reboot(RB_DISABLE_CAD);
#endif
+ /* Figure out what kernel this is running */
+ kernelVersion = get_kernel_revision();
+
/* Figure out where the default console should be */
console_init();
close(1);
close(2);
set_term(0);
+ chdir("/");
setsid();
/* Make sure PATH is set to something sane */
/* Hello world */
#ifndef DEBUG_INIT
- message(LOG,
+ message(
+#if ! defined BB_FEATURE_EXTRA_QUIET
+ CONSOLE|
+#endif
+ LOG,
"init started: BusyBox v%s (%s) multi-call binary\r\n",
BB_VER, BB_BT);
#else
- message(LOG,
+ message(
+#if ! defined BB_FEATURE_EXTRA_QUIET
+ CONSOLE|
+#endif
+ LOG,
"init(%d) started: BusyBox v%s (%s) multi-call binary\r\n",
getpid(), BB_VER, BB_BT);
#endif
* of "askfirst" shells */
parse_inittab();
}
-
+
/* Fix up argv[0] to be certain we claim to be init */
strncpy(argv[0], "init", strlen(argv[0])+1);
if (argc > 1)
sleep(1);
}
}
+
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
projects / oweals / busybox.git / blobdiff