0.40
* Added the -s option to du -beppu
* Fixed an embarrasing segfault in head -beppu
- * Fixed an bug in syslogd causing it to stop logging after 20 minutes. -erik
+ * Fixed an bug in syslogd causing it to stop after 20 minutes. -erik
* New Apps: lsmod, rmmod -erik
* New Apps: fbset contributed by Randolph Chung <tausq@debian.org>.
- * Fixed the embarrasing failure of the -p opition in the logger app. -erik
- * Re-worked the whole source tree a bit so it will compile under glibc 2.0.7
+ * Fixed the embarrasing failure of 'logger -p'. -erik
+ * Re-worked the source tree a bit so it will compile under glibc 2.0.7
with the 2.0.x Linux kernel.
* Added 'grep -q' thanks to a patch from "Konstantin Boldyshev"
<konst@voshod.com>.
* Fixed a bug where tar would set, and then clear SGID and SUID bits.
* Fixed a bug where tar would not set the user and group on device
special files.
- * cp and mv were quite broken when moving directories. I have rewritten
+ * cp and mv were very broken when moving directories. I have rewritten
them so they should now work as expected.
* New app: loadacm contributed by Peter Novodvorsky <petya@logic.ru>
- for loading application character maps for working with Unicode fonts.
+ for loading application character maps for Unicode fonts.
* sed now supports addresses (numeric or regexp, with negation) and
has an append command, thanks to Marco Pantaleoni <panta@prosa.it>
* Fixed dmesg. It wasn't parsing its options (-n or -s) properly.
* Some cosmetic fixes to ls output formatting to make it behave more
like GNU ls.
+ * Fixed a bug where tar would not restore the time to files.
+ * Fixed a major security problem with tar -- it changed ownership
+ of any file pointed to by a symlink to 777 (like say libc....)
+ Ouch!!!
+ * Fixed a stupid segfault in kill.
+ * Several fixes from Friedrich Vedder <fwv@myrtle.lahn.de>:
+ - Added gunzip -t, removed gunzip.c dead code,
+ - fixed several typos
+ - Glibc 2.0.7 and libc5 compile fixes
-Erik Andersen
# Comment out the following to make a debuggable build
# Leave this off for production use.
-DODEBUG=false
+DODEBUG=true
# If you want a static binary, turn this on. I can't think
# of many situations where anybody would ever want it static,
# but...
#ifdef BB_LN //bin
{"ln", ln_main},
#endif
+#ifdef BB_LOADACM //usr/bin
+ {"loadacm", loadacm_main},
+#endif
#ifdef BB_LOADFONT //usr/bin
{"loadfont", loadfont_main},
#endif
#ifdef BB_GZIP //bin
{"gzip", gzip_main},
#endif
-#ifdef BB_LOADACM //usr/bin
- {"loadacm", loadacm_main},
-#endif
{0}
};
"gunzip [OPTION]... FILE\n\n"
"Uncompress FILE (or standard input if FILE is '-').\n\n"
"Options:\n"
- "\t-c\tWrite output to standard output\n";
+ "\t-c\tWrite output to standard output\n"
+ "\t-t\tTest compressed file integrity\n";
/* gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
* Copyright (C) 1992-1993 Jean-loup Gailly
/* local variables */
-int force = 0; /* don't ask questions, compress links (-f) */
+int test_mode = 0; /* check file integrity option */
int foreground; /* set if program run in foreground */
int maxbits = BITS; /* max bits per code for LZW */
int method = DEFLATED;/* compression method */
case 'c':
to_stdout = 1;
break;
+ case 't':
+ test_mode = 1;
+ break;
+
default:
usage(gunzip_usage);
}
/* Actually do the compression/decompression. */
unzip(inFileNum, outFileNum);
+ } else if (test_mode) {
+ /* Actually do the compression/decompression. */
+ unzip(inFileNum, 2);
} else {
char* pos;
uch flags; /* compression flags */
char magic[2]; /* magic header */
- /* If --force and --stdout, zcat == cat, so do not complain about
- * premature end of file: use try_byte instead of get_byte.
- */
- if (force) {
- magic[0] = (char)try_byte();
- magic[1] = (char)try_byte();
- /* If try_byte returned EOF, magic[1] == 0xff */
- } else {
- magic[0] = (char)get_byte();
- magic[1] = (char)get_byte();
- }
+ magic[0] = (char)get_byte();
+ magic[1] = (char)get_byte();
method = -1; /* unknown yet */
part_nb++; /* number of parts in gzip file */
header_bytes = 0;
{
if (outcnt == 0) return;
- write_buf(ofd, (char *)outbuf, outcnt);
+ if (!test_mode)
+ write_buf(ofd, (char *)outbuf, outcnt);
bytes_out += (ulg)outcnt;
outcnt = 0;
}
if (outcnt == 0) return;
updcrc(window, outcnt);
- write_buf(ofd, (char *)window, outcnt);
-
+ if (!test_mode)
+ write_buf(ofd, (char *)window, outcnt);
bytes_out += (ulg)outcnt;
outcnt = 0;
}
#include <fcntl.h>
#include <signal.h>
#include <time.h>
+#include <utime.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
static int eofFlag;
static long dataCc;
static int outFd;
-static char outName[TAR_NAME_SIZE];
+static const char *outName;
+static int mode;
+static int uid;
+static int gid;
+static time_t mtime;
/*
* Static data associated with the tar file.
* message is required on errors.
*/
if (tostdoutFlag == FALSE) {
- if (outFd >= 0)
- (void) close (outFd);
+ if (outFd >= 0) {
+ close (outFd);
+ }
}
}
static void
readHeader (const TarHeader * hp, int fileCount, char **fileTable)
{
- int mode;
- int uid;
- int gid;
int checkSum;
- unsigned int major;
- unsigned int minor;
- long size;
- time_t mtime;
- const char *name;
int cc;
int hardLink;
int softLink;
int devFileFlag;
+ unsigned int major;
+ unsigned int minor;
+ long size;
+ struct utimbuf utb;
/*
* If the block is completely empty, then this is the end of the
* archive file. If the name is null, then just skip this header.
*/
- name = hp->name;
+ outName = hp->name;
- if (*name == '\0') {
+ if (*outName == '\0') {
for (cc = TAR_BLOCK_SIZE; cc > 0; cc--) {
- if (*name++)
+ if (*outName++)
return;
}
/*
* Check for a directory.
*/
- if (name[strlen (name) - 1] == '/')
+ if (outName[strlen (outName) - 1] == '/')
mode |= S_IFDIR;
/*
* Check for absolute paths in the file.
* If we find any, then warn the user and make them relative.
*/
- if (*name == '/') {
- while (*name == '/')
- name++;
+ if (*outName == '/') {
+ while (*outName == '/')
+ outName++;
if (warnedRoot==FALSE) {
fprintf (stderr,
* See if we want this file to be restored.
* If not, then set up to skip it.
*/
- if (wantFileName (name, fileCount, fileTable) == FALSE) {
+ if (wantFileName (outName, fileCount, fileTable) == FALSE) {
if ( !hardLink && !softLink && (S_ISREG (mode) || S_ISCHR (mode)
|| S_ISBLK (mode) || S_ISSOCK(mode) || S_ISFIFO(mode) ) ) {
inHeader = (size == 0)? TRUE : FALSE;
else
printf ("%9ld %s ", size, timeString (mtime));
}
- printf ("%s", name);
+ printf ("%s", outName);
if (hardLink)
printf (" (link to \"%s\")", hp->linkName);
* We really want to extract the file.
*/
if (verboseFlag==TRUE)
- printf ("x %s\n", name);
+ printf ("x %s\n", outName);
if (hardLink) {
- if (link (hp->linkName, name) < 0)
- perror (name);
- chown(name, uid, gid);
- chmod(name, mode);
+ if (link (hp->linkName, outName) < 0)
+ perror (outName);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
return;
}
if (softLink) {
#ifdef S_ISLNK
- if (symlink (hp->linkName, name) < 0)
- perror (name);
- chown(name, uid, gid);
- chmod(name, mode);
+ if (symlink (hp->linkName, outName) < 0)
+ perror (outName);
+ /* Try to change ownership of the symlink.
+ * If libs doesn't support that, don't bother.
+ * Changing the pointed-to file is the Wrong Thing(tm).
+ */
+#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+ lchown(outName, uid, gid);
+#endif
+
+ /* Do not change permissions or date on symlink,
+ * since it changes the pointed to file instead. duh. */
#else
fprintf (stderr, "Cannot create symbolic links\n");
#endif
* If the file is a directory, then just create the path.
*/
if (S_ISDIR (mode)) {
- createPath (name, mode);
- chown(name, uid, gid);
- chmod(name, mode);
-
+ createPath (outName, mode);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
return;
}
* There is a file to write.
* First create the path to it if necessary with default permissions.
*/
- createPath (name, 0777);
+ createPath (outName, 0777);
inHeader = (size == 0)? TRUE : FALSE;
dataCc = size;
else {
if ( S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) ) {
devFileFlag = TRUE;
- outFd = mknod (name, mode, makedev(major, minor) );
+ outFd = mknod (outName, mode, makedev(major, minor) );
}
else if (S_ISFIFO(mode) ) {
devFileFlag = TRUE;
- outFd = mkfifo(name, mode);
+ outFd = mkfifo(outName, mode);
} else {
- outFd = open (name, O_WRONLY | O_CREAT | O_TRUNC, mode);
+ outFd = open (outName, O_WRONLY | O_CREAT | O_TRUNC, mode);
}
if (outFd < 0) {
- perror (name);
+ perror (outName);
skipFileFlag = TRUE;
return;
}
- chown(name, uid, gid);
- chmod(name, mode);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
}
* If the file is empty, then that's all we need to do.
*/
if (size == 0 && (tostdoutFlag == FALSE) && (devFileFlag == FALSE)) {
- (void) close (outFd);
+ close (outFd);
outFd = -1;
}
}
if (fullWrite (outFd, cp, count) < 0) {
perror (outName);
if (tostdoutFlag == FALSE) {
- (void) close (outFd);
+ close (outFd);
outFd = -1;
}
skipFileFlag = TRUE;
}
/*
- * If the write failed, close the file and disable further
- * writes to this file.
+ * Check if we are done writing to the file now.
*/
if (dataCc <= 0 && tostdoutFlag == FALSE) {
+ struct utimbuf utb;
if (close (outFd))
perror (outName);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
+
outFd = -1;
}
}
static void saveFile (const char *fileName, int seeLinks)
{
int status;
- int mode;
struct stat statbuf;
if (verboseFlag==TRUE)
#ifdef BB_LN //bin
{"ln", ln_main},
#endif
+#ifdef BB_LOADACM //usr/bin
+ {"loadacm", loadacm_main},
+#endif
#ifdef BB_LOADFONT //usr/bin
{"loadfont", loadfont_main},
#endif
#ifdef BB_GZIP //bin
{"gzip", gzip_main},
#endif
-#ifdef BB_LOADACM //usr/bin
- {"loadacm", loadacm_main},
-#endif
{0}
};
//#define BB_LOADACM
//#define BB_LOADFONT
//#define BB_LOADKMAP
-#define BB_LOGGER
+//#define BB_LOGGER
#define BB_LS
#define BB_LSMOD
//#define BB_MAKEDEVS
#define BB_SORT
#define BB_SWAPONOFF
#define BB_SYNC
-#define BB_SYSLOGD
+//#define BB_SYSLOGD
#define BB_TAIL
#define BB_TAR
#define BB_TEE
// pretty/useful).
//
//
-// enable a second console on TTY2 in init
-#define BB_FEATURE_INIT_SECOND_CONSOLE
// enable features that use the /proc filesystem
#define BB_FEATURE_USE_PROCFS
//Enable init being called as /linuxrc
+++ /dev/null
-#ifndef __BUSYBOX_FUNCTIONS_H__
-#define __BUSYBOX_FUNCTIONS_H__
-
-int
-mkswap(char *device_name, int pages, int check);
-/* pages = 0 for autodetection */
-
-int
-fdflush(char *filename);
-
-#endif /* __BUSYBOX_FUNCTIONS_H__ */
"\n"
"\t-a\tsame as -dpR\n"
"\t-d\tpreserve links\n"
- "\t-p\tpreserve file attributes if possable\n"
+ "\t-p\tpreserve file attributes if possible\n"
"\t-R\tcopy directories recursively\n";
"\n"
"\t-a\tsame as -dpR\n"
"\t-d\tpreserve links\n"
- "\t-p\tpreserve file attributes if possable\n"
+ "\t-p\tpreserve file attributes if possible\n"
"\t-R\tcopy directories recursively\n";
"\t /REGEXP/ Match specified regexp\n"
"\t (! inverts the meaning of the match)\n\n"
"\tand COMMAND can be:\n"
- "\t s/regexp/replacement/[gp]\n"
+ "\t s/regexp/replacement/[igp]\n"
"\t which attempt to match regexp against the pattern space\n"
"\t and if successful replaces the matched portion with replacement.\n\n"
"\t aTEXT\n"
"gunzip [OPTION]... FILE\n\n"
"Uncompress FILE (or standard input if FILE is '-').\n\n"
"Options:\n"
- "\t-c\tWrite output to standard output\n";
+ "\t-c\tWrite output to standard output\n"
+ "\t-t\tTest compressed file integrity\n";
/* gzip (GNU zip) -- compress files with zip algorithm and 'compress' interface
* Copyright (C) 1992-1993 Jean-loup Gailly
/* local variables */
-int force = 0; /* don't ask questions, compress links (-f) */
+int test_mode = 0; /* check file integrity option */
int foreground; /* set if program run in foreground */
int maxbits = BITS; /* max bits per code for LZW */
int method = DEFLATED;/* compression method */
case 'c':
to_stdout = 1;
break;
+ case 't':
+ test_mode = 1;
+ break;
+
default:
usage(gunzip_usage);
}
/* Actually do the compression/decompression. */
unzip(inFileNum, outFileNum);
+ } else if (test_mode) {
+ /* Actually do the compression/decompression. */
+ unzip(inFileNum, 2);
} else {
char* pos;
uch flags; /* compression flags */
char magic[2]; /* magic header */
- /* If --force and --stdout, zcat == cat, so do not complain about
- * premature end of file: use try_byte instead of get_byte.
- */
- if (force) {
- magic[0] = (char)try_byte();
- magic[1] = (char)try_byte();
- /* If try_byte returned EOF, magic[1] == 0xff */
- } else {
- magic[0] = (char)get_byte();
- magic[1] = (char)get_byte();
- }
+ magic[0] = (char)get_byte();
+ magic[1] = (char)get_byte();
method = -1; /* unknown yet */
part_nb++; /* number of parts in gzip file */
header_bytes = 0;
{
if (outcnt == 0) return;
- write_buf(ofd, (char *)outbuf, outcnt);
+ if (!test_mode)
+ write_buf(ofd, (char *)outbuf, outcnt);
bytes_out += (ulg)outcnt;
outcnt = 0;
}
if (outcnt == 0) return;
updcrc(window, outcnt);
- write_buf(ofd, (char *)window, outcnt);
-
+ if (!test_mode)
+ write_buf(ofd, (char *)window, outcnt);
bytes_out += (ulg)outcnt;
outcnt = 0;
}
#include "internal.h"
#include <stdio.h>
+#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#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 GETTY "/sbin/getty" /* Default location of getty */
-#define SHELL "/bin/sh" /* Default shell */
-#define INITTAB "/etc/inittab" /* inittab file location */
-#ifndef BB_INIT_SCRIPT
-#define BB_INIT_SCRIPT "/etc/init.d/rcS" /* Initscript. */
-#endif
-
-#if 1
+#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 REBOOT "/sbin/reboot" /* Default ctrl-alt-del command */
+#define INITTAB "/etc/inittab" /* inittab file location */
+#define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
#define LOG 0x1
#define CONSOLE 0x2
+
+/* Allowed init action types */
+typedef enum {
+ SYSINIT=1,
+ CTRLALTDEL,
+ 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;
+} initActionType;
+
+static const struct initActionType actions[] = {
+ {"sysinit", SYSINIT},
+ {"ctrlaltdel", CTRLALTDEL},
+ {"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;
+ initAction *nextPtr;
+ initActionEnum action;
+};
+initAction* initActionList = NULL;
+
+
static char *console = _PATH_CONSOLE;
static char *second_console = VT_SECONDARY;
static char *log = VT_LOG;
* device may be bitwise-or'd from LOG | CONSOLE */
void message(int device, char *fmt, ...)
{
- int fd;
va_list arguments;
+ int fd;
+
#ifdef BB_SYSLOGD
/* Log the message to syslogd */
}
-static pid_t run(const char * const* command,
+static pid_t run(char* command,
char *terminal, int get_enter)
{
- int fd;
+ int i;
pid_t pid;
- const char * const* cmd = command+1;
+ char* tmpCmd;
+ char* cmd[255];
static const char press_enter[] =
"\nPlease press Enter to activate this console. ";
if ((pid = fork()) == 0) {
+ int fd;
/* Clean up */
close(0);
close(1);
signal(SIGTERM, SIG_DFL);
if ((fd = device_open(terminal, O_RDWR)) < 0) {
- message(LOG, "Bummer, can't open %s\r\n", terminal);
+ message(LOG|CONSOLE, "Bummer, can't open %s\r\n", terminal);
exit(-1);
}
dup(fd);
*/
char c;
message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
- *cmd, getpid(), terminal );
- write(1, press_enter, sizeof(press_enter) - 1);
- read(0, &c, 1);
+ command, getpid(), terminal );
+ write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
+ read(fileno(stdin), &c, 1);
}
+ /* 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;
+ tmpCmd++;
+ i++;
+ }
+ }
+ cmd[i] = NULL;
+
/* Log the process name and args */
- message(LOG|CONSOLE, "Starting pid %d, console %s: '", getpid(), terminal);
- while ( *cmd) message(LOG|CONSOLE, "%s ", *cmd++);
- message(LOG|CONSOLE, "'\r\n");
-
+ message(LOG, "Starting pid %d, console %s: '%s'\r\n",
+ getpid(), terminal, cmd[0]);
+
/* Now run it. The new program will take over this PID,
* so nothing further in init.c should be run. */
- execvp(*command, (char**)command+1);
+ execvp(cmd[0], cmd);
- message(LOG, "Bummer, could not run '%s'\n", command);
+ /* 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;
static void check_memory()
{
struct stat statbuf;
- const char* const swap_on_cmd[] =
- { "/bin/swapon", "swapon", "-a", 0};
if (mem_total() > 3500)
return;
if (stat("/etc/fstab", &statbuf) == 0) {
/* Try to turn on swap */
- waitfor(run(swap_on_cmd, log, FALSE));
+ waitfor(run("/bin/swapon swapon -a", log, FALSE));
if (mem_total() < 3500)
goto goodnight;
} else
while (1) sleep(1);
}
+#ifndef DEBUG_INIT
static void shutdown_system(void)
{
- const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0};
- const char* const umount_cmd[] = { "umount", "umount", "-a", 0};
-
-#ifndef DEBUG_INIT
/* Allow Ctrl-Alt-Del to reboot system. */
reboot(RB_ENABLE_CAD);
-#endif
message(CONSOLE, "\r\nThe system is going down NOW !!\r\n");
sync();
+
/* Send signals to every process _except_ pid 1 */
message(CONSOLE, "Sending SIGHUP to all processes.\r\n");
-#ifndef DEBUG_INIT
kill(-1, SIGHUP);
-#endif
sleep(2);
sync();
+
message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
-#ifndef DEBUG_INIT
kill(-1, SIGKILL);
-#endif
sleep(1);
+
message(CONSOLE, "Disabling swap.\r\n");
- waitfor(run( swap_off_cmd, console, FALSE));
+ waitfor(run( "swapoff -a", console, FALSE));
message(CONSOLE, "Unmounting filesystems.\r\n");
- waitfor(run( umount_cmd, console, FALSE));
+ waitfor(run( "umount -a", console, FALSE));
sync();
if (kernel_version > 0 && kernel_version <= 2 * 65536 + 2 * 256 + 11) {
/* bdflush, kupdate not needed for kernels >2.2.11 */
message(CONSOLE,
"The system is halted. Press CTRL-ALT-DEL or turn off power\r\n");
sync();
-#ifndef DEBUG_INIT
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
if (sig == SIGUSR2)
reboot(RB_POWER_OFF);
else
#endif
- reboot(RB_HALT_SYSTEM);
-#endif
+ reboot(RB_HALT_SYSTEM);
exit(0);
}
shutdown_system();
message(CONSOLE, "Please stand by while rebooting the system.\r\n");
sync();
-#ifndef DEBUG_INIT
reboot(RB_AUTOBOOT);
-#endif
exit(0);
}
+static void ctrl_alt_del_signal(int sig)
+{
+ initAction* a;
+ /* Run whatever we are supposed to run */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == CTRLALTDEL) {
+ waitfor(run(a->process, console, FALSE));
+ }
+ }
+}
+#endif
+
+void new_initAction (const struct initActionType *a,
+ char* process, char* console)
+{
+ initAction* newAction;
+ newAction = calloc ((size_t)(1), sizeof(initAction));
+ if (!newAction) {
+ fprintf(stderr, "Memory allocation failure\n");
+ while (1) sleep(1);
+ }
+ newAction->nextPtr = initActionList;
+ initActionList = newAction;
+ strncpy( newAction->process, process, 255);
+ newAction->action = a->action;
+ newAction->console = console;
+ newAction->pid = 0;
+}
+
+void delete_initAction (initAction *action)
+{
+ initAction *a, *b=NULL;
+ for( a=initActionList ; a; b=a, a=a->nextPtr) {
+ if (a == action && b != NULL) {
+ b->nextPtr=a->nextPtr;
+ free( a);
+ break;
+ }
+ }
+}
+
+void parse_inittab(void)
+{
+ FILE* file;
+ char buf[256];
+ char *p, *q, *r;
+ const struct initActionType *a = actions;
+ int foundIt;
+
+
+ file = fopen(INITTAB, "r");
+ if (file == NULL) {
+ /* No inittab file -- set up some default behavior */
+
+ /* Askfirst shell on tty1 */
+ new_initAction( &(actions[3]), SHELL, console );
+ /* Askfirst shell on tty2 */
+ if (second_console != NULL)
+ new_initAction( &(actions[3]), SHELL, second_console );
+ /* Control-alt-del */
+ new_initAction( &(actions[1]), REBOOT, console );
+ /* sysinit */
+ new_initAction( &(actions[0]), INIT_SCRIPT, console );
+
+ return;
+ }
+
+ 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';
+
+ /* Skip past the ID field and the runlevel
+ * field (both are ignored) */
+ p = strchr( p, ':');
+
+ /* Now peal off the process field from the end
+ * of the string */
+ q = strrchr( p, ':');
+ if ( q == NULL || *(q+1) == '\0' ) {
+ fprintf(stderr, "Bad inittab entry: %s\n", buf);
+ continue;
+ } else {
+ *q='\0';
+ ++q;
+ }
+
+ /* Now peal off the action field */
+ r = strrchr( p, ':');
+ if ( r == NULL || *(r+1) == '\0') {
+ fprintf(stderr, "Bad inittab entry: %s\n", buf);
+ continue;
+ } else {
+ ++r;
+ }
+
+ /* Ok, now process it */
+ a = actions;
+ while (a->name != 0) {
+ if (strcmp(a->name, r) == 0) {
+ new_initAction( a, q, NULL);
+ foundIt=TRUE;
+ }
+ a++;
+ }
+ if (foundIt==TRUE)
+ continue;
+ else {
+ /* Choke on an unknown action */
+ fprintf(stderr, "Bad inittab entry: %s\n", buf);
+ }
+ }
+ return;
+}
+
+
extern int init_main(int argc, char **argv)
{
- int run_rc = FALSE;
+ initAction *a;
+ pid_t wpid;
+ int status;
int single = FALSE;
- int wait_for_enter_tty1 = TRUE;
- int wait_for_enter_tty2 = TRUE;
- pid_t pid1 = 0;
- pid_t pid2 = 0;
- struct stat statbuf;
- char which_vt1[30];
- char which_vt2[30];
- const char* const rc_script_command[] = { BB_INIT_SCRIPT, BB_INIT_SCRIPT, 0};
- const char* const getty1_command[] = { GETTY, GETTY, "38400", which_vt1, 0};
- const char* const getty2_command[] = { GETTY, GETTY, "38400", which_vt2, 0};
- const char* const shell_command[] = { SHELL, "-" SHELL, 0};
- const char* const* tty1_command = shell_command;
- const char* const* tty2_command = shell_command;
-#ifdef BB_INIT_CMD_IF_RC_SCRIPT_EXITS
- const char* const rc_exit_command[] = { "BB_INIT_CMD_IF_RC_SCRIPT_EXITS",
- "BB_INIT_CMD_IF_RC_SCRIPT_EXITS", 0 };
-#endif
-#ifdef DEBUG_INIT
- char *hello_msg_format =
- "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n";
-#else
- char *hello_msg_format =
- "init started: BusyBox v%s (%s) multi-call binary\r\n";
-#endif
-
#ifndef DEBUG_INIT
/* Expect to be PID 1 iff 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");
}
-#endif
- /* Set up sig handlers -- be sure to
- * clear all of these in run() */
+ /* 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(SIGINT, ctrl_alt_del_signal);
signal(SIGTERM, reboot_signal);
/* Turn off rebooting via CTL-ALT-DEL -- we get a
* SIGINT on CAD so we can shut things down gracefully... */
-#ifndef DEBUG_INIT
reboot(RB_DISABLE_CAD);
#endif
-
+
/* Figure out where the default console should be */
console_init();
/* Hello world */
#ifndef DEBUG_INIT
- message(CONSOLE|LOG, hello_msg_format, BB_VER, BB_BT);
+ message(CONSOLE|LOG,
+ "init started: BusyBox v%s (%s) multi-call binary\r\n",
+ BB_VER, BB_BT);
#else
- message(CONSOLE|LOG, hello_msg_format, getpid(), BB_VER, BB_BT);
+ message(CONSOLE|LOG,
+ "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n",
+ getpid(), BB_VER, BB_BT);
#endif
if ( argc > 1 && (!strcmp(argv[1], "single") ||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
single = TRUE;
- tty1_command = shell_command;
- tty2_command = shell_command;
+ /* Ask first then start a shell on tty2 */
+ if (second_console != NULL)
+ new_initAction( &(actions[3]), SHELL, second_console);
+ /* Ask first then start a shell on tty1 */
+ new_initAction( &(actions[3]), SHELL, console);
+ } else {
+ /* Not in single user mode -- see what inittab says */
+ parse_inittab();
}
- /* Make sure an init script exists before trying to run it */
- if (single==FALSE && stat(BB_INIT_SCRIPT, &statbuf)==0) {
- run_rc = TRUE;
- wait_for_enter_tty1 = FALSE;
- tty1_command = rc_script_command;
+ /* Now run everything that needs to be run */
+
+ /* First run sysinit */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == SYSINIT) {
+ waitfor(run(a->process, console, FALSE));
+ /* Now remove the "sysinit" entry from the list */
+ delete_initAction( a);
+ }
}
-
- /* Make sure /sbin/getty exists before trying to run it */
- if (stat(GETTY, &statbuf)==0) {
- char* where;
- /* First do tty2 */
- wait_for_enter_tty2 = FALSE;
- where = strrchr( second_console, '/');
- if ( where != NULL) {
- where++;
- strncpy( which_vt2, where, sizeof(which_vt2));
+ /* Next run anything that wants to block */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == WAIT) {
+ waitfor(run(a->process, console, FALSE));
+ /* Now remove the "wait" entry from the list */
+ delete_initAction( a);
}
- tty2_command = getty2_command;
-
- /* Check on hooking a getty onto tty1 */
- if (run_rc == FALSE && single==FALSE) {
- wait_for_enter_tty1 = FALSE;
- where = strrchr( console, '/');
- if ( where != NULL) {
- where++;
- strncpy( which_vt1, where, sizeof(which_vt1));
- }
- tty1_command = getty1_command;
+ }
+ /* Next run anything to be run only once */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == ONCE) {
+ run(a->process, console, FALSE);
+ /* Now remove the "once" entry from the list */
+ delete_initAction( a);
}
}
-
- /* Ok, now launch the tty1_command and tty2_command */
+ /* Now run the looping stuff */
for (;;) {
- pid_t wpid;
- int status;
-
- if (pid1 == 0 && tty1_command) {
- pid1 = run(tty1_command, console, wait_for_enter_tty1);
- }
-#ifdef BB_FEATURE_INIT_SECOND_CONSOLE
- if (pid2 == 0 && tty2_command && second_console) {
- pid2 = run(tty2_command, second_console, wait_for_enter_tty2);
+ 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, console, FALSE);
+ break;
+ case ASKFIRST:
+ /* run the askfirst stuff */
+ a->pid = waitfor(run(a->process, console, TRUE));
+ break;
+ /* silence the compiler's whining */
+ default:
+ break;
+ }
+ }
}
-#endif
+
wpid = wait(&status);
+ /* Find out who died and clean up their corpse */
if (wpid > 0 ) {
message(LOG, "pid %d exited, status=%x.\n", wpid, status);
- }
- /* Don't respawn init script if it exits */
- if (wpid == pid1) {
- if (run_rc == FALSE) {
- pid1 = 0;
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->pid==wpid) {
+ a->pid=0;
+ }
}
-#ifdef BB_INIT_CMD_IF_RC_SCRIPT_EXITS
- else {
- pid1 = 0;
- run_rc=FALSE;
- wait_for_enter_tty1=TRUE;
- tty1_command=rc_exit_command;
- }
-#endif
}
-#ifdef BB_FEATURE_INIT_SECOND_CONSOLE
- if (wpid == pid2) {
- pid2 = 0;
- }
-#endif
- sleep(1);
- }
-}
-
-#else
-
-
-void parse_inittab(void)
-{
- FILE* file;
- char buf[256];
- char action[256]="";
- char process[256]="";
- char *p, *q;
-
-
- if ((file = fopen(INITTAB, "r")) < 0) {
- /* No inittab file -- set up some default behavior */
-
- /* FIXME */
- return;
- }
-
- while ( fgets(buf, 255, file) != NULL) {
- 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';
-
- /* Skip past the ID field and the runlevel
- * field (both are ignored) */
- p = strchr( p, ':');
-
- /* Now peal off the process field from the end
- * of the string */
- q = strrchr( p, ':');
- if ( q == NULL || q+1 == NULL)
- goto choke;
- *q='\0';
- strcpy( process, ++q);
- fprintf(stderr, "process=%s\n", process);
-
-
- /* Now peal off the action field */
- q = strrchr( p, ':');
- if ( q == NULL || q+1 == NULL)
- goto choke;
- strcpy( action, ++q);
- fprintf(stderr, "action=%s\n", action);
-
-
- /* Ok, now do the right thing */
+ sleep(1);
}
- return;
-
-choke:
- //message(CONSOLE, "Bad entry:");
- fprintf(stderr, "Bad inittab entry: %s", buf);
- while (1) sleep(1);
-
-}
-
-
-extern int init_main(int argc, char **argv)
-{
- parse_inittab();
- exit( TRUE);
}
-
-#endif
#include "internal.h"
#include <stdio.h>
+#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <unistd.h>
#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 GETTY "/sbin/getty" /* Default location of getty */
-#define SHELL "/bin/sh" /* Default shell */
-#define INITTAB "/etc/inittab" /* inittab file location */
-#ifndef BB_INIT_SCRIPT
-#define BB_INIT_SCRIPT "/etc/init.d/rcS" /* Initscript. */
-#endif
-
-#if 1
+#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 REBOOT "/sbin/reboot" /* Default ctrl-alt-del command */
+#define INITTAB "/etc/inittab" /* inittab file location */
+#define INIT_SCRIPT "/etc/init.d/rcS" /* Default sysinit script. */
#define LOG 0x1
#define CONSOLE 0x2
+
+/* Allowed init action types */
+typedef enum {
+ SYSINIT=1,
+ CTRLALTDEL,
+ 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;
+} initActionType;
+
+static const struct initActionType actions[] = {
+ {"sysinit", SYSINIT},
+ {"ctrlaltdel", CTRLALTDEL},
+ {"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;
+ initAction *nextPtr;
+ initActionEnum action;
+};
+initAction* initActionList = NULL;
+
+
static char *console = _PATH_CONSOLE;
static char *second_console = VT_SECONDARY;
static char *log = VT_LOG;
* device may be bitwise-or'd from LOG | CONSOLE */
void message(int device, char *fmt, ...)
{
- int fd;
va_list arguments;
+ int fd;
+
#ifdef BB_SYSLOGD
/* Log the message to syslogd */
}
-static pid_t run(const char * const* command,
+static pid_t run(char* command,
char *terminal, int get_enter)
{
- int fd;
+ int i;
pid_t pid;
- const char * const* cmd = command+1;
+ char* tmpCmd;
+ char* cmd[255];
static const char press_enter[] =
"\nPlease press Enter to activate this console. ";
if ((pid = fork()) == 0) {
+ int fd;
/* Clean up */
close(0);
close(1);
signal(SIGTERM, SIG_DFL);
if ((fd = device_open(terminal, O_RDWR)) < 0) {
- message(LOG, "Bummer, can't open %s\r\n", terminal);
+ message(LOG|CONSOLE, "Bummer, can't open %s\r\n", terminal);
exit(-1);
}
dup(fd);
*/
char c;
message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
- *cmd, getpid(), terminal );
- write(1, press_enter, sizeof(press_enter) - 1);
- read(0, &c, 1);
+ command, getpid(), terminal );
+ write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
+ read(fileno(stdin), &c, 1);
}
+ /* 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;
+ tmpCmd++;
+ i++;
+ }
+ }
+ cmd[i] = NULL;
+
/* Log the process name and args */
- message(LOG|CONSOLE, "Starting pid %d, console %s: '", getpid(), terminal);
- while ( *cmd) message(LOG|CONSOLE, "%s ", *cmd++);
- message(LOG|CONSOLE, "'\r\n");
-
+ message(LOG, "Starting pid %d, console %s: '%s'\r\n",
+ getpid(), terminal, cmd[0]);
+
/* Now run it. The new program will take over this PID,
* so nothing further in init.c should be run. */
- execvp(*command, (char**)command+1);
+ execvp(cmd[0], cmd);
- message(LOG, "Bummer, could not run '%s'\n", command);
+ /* 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;
static void check_memory()
{
struct stat statbuf;
- const char* const swap_on_cmd[] =
- { "/bin/swapon", "swapon", "-a", 0};
if (mem_total() > 3500)
return;
if (stat("/etc/fstab", &statbuf) == 0) {
/* Try to turn on swap */
- waitfor(run(swap_on_cmd, log, FALSE));
+ waitfor(run("/bin/swapon swapon -a", log, FALSE));
if (mem_total() < 3500)
goto goodnight;
} else
while (1) sleep(1);
}
+#ifndef DEBUG_INIT
static void shutdown_system(void)
{
- const char* const swap_off_cmd[] = { "swapoff", "swapoff", "-a", 0};
- const char* const umount_cmd[] = { "umount", "umount", "-a", 0};
-
-#ifndef DEBUG_INIT
/* Allow Ctrl-Alt-Del to reboot system. */
reboot(RB_ENABLE_CAD);
-#endif
message(CONSOLE, "\r\nThe system is going down NOW !!\r\n");
sync();
+
/* Send signals to every process _except_ pid 1 */
message(CONSOLE, "Sending SIGHUP to all processes.\r\n");
-#ifndef DEBUG_INIT
kill(-1, SIGHUP);
-#endif
sleep(2);
sync();
+
message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
-#ifndef DEBUG_INIT
kill(-1, SIGKILL);
-#endif
sleep(1);
+
message(CONSOLE, "Disabling swap.\r\n");
- waitfor(run( swap_off_cmd, console, FALSE));
+ waitfor(run( "swapoff -a", console, FALSE));
message(CONSOLE, "Unmounting filesystems.\r\n");
- waitfor(run( umount_cmd, console, FALSE));
+ waitfor(run( "umount -a", console, FALSE));
sync();
if (kernel_version > 0 && kernel_version <= 2 * 65536 + 2 * 256 + 11) {
/* bdflush, kupdate not needed for kernels >2.2.11 */
message(CONSOLE,
"The system is halted. Press CTRL-ALT-DEL or turn off power\r\n");
sync();
-#ifndef DEBUG_INIT
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
if (sig == SIGUSR2)
reboot(RB_POWER_OFF);
else
#endif
- reboot(RB_HALT_SYSTEM);
-#endif
+ reboot(RB_HALT_SYSTEM);
exit(0);
}
shutdown_system();
message(CONSOLE, "Please stand by while rebooting the system.\r\n");
sync();
-#ifndef DEBUG_INIT
reboot(RB_AUTOBOOT);
-#endif
exit(0);
}
+static void ctrl_alt_del_signal(int sig)
+{
+ initAction* a;
+ /* Run whatever we are supposed to run */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == CTRLALTDEL) {
+ waitfor(run(a->process, console, FALSE));
+ }
+ }
+}
+#endif
+
+void new_initAction (const struct initActionType *a,
+ char* process, char* console)
+{
+ initAction* newAction;
+ newAction = calloc ((size_t)(1), sizeof(initAction));
+ if (!newAction) {
+ fprintf(stderr, "Memory allocation failure\n");
+ while (1) sleep(1);
+ }
+ newAction->nextPtr = initActionList;
+ initActionList = newAction;
+ strncpy( newAction->process, process, 255);
+ newAction->action = a->action;
+ newAction->console = console;
+ newAction->pid = 0;
+}
+
+void delete_initAction (initAction *action)
+{
+ initAction *a, *b=NULL;
+ for( a=initActionList ; a; b=a, a=a->nextPtr) {
+ if (a == action && b != NULL) {
+ b->nextPtr=a->nextPtr;
+ free( a);
+ break;
+ }
+ }
+}
+
+void parse_inittab(void)
+{
+ FILE* file;
+ char buf[256];
+ char *p, *q, *r;
+ const struct initActionType *a = actions;
+ int foundIt;
+
+
+ file = fopen(INITTAB, "r");
+ if (file == NULL) {
+ /* No inittab file -- set up some default behavior */
+
+ /* Askfirst shell on tty1 */
+ new_initAction( &(actions[3]), SHELL, console );
+ /* Askfirst shell on tty2 */
+ if (second_console != NULL)
+ new_initAction( &(actions[3]), SHELL, second_console );
+ /* Control-alt-del */
+ new_initAction( &(actions[1]), REBOOT, console );
+ /* sysinit */
+ new_initAction( &(actions[0]), INIT_SCRIPT, console );
+
+ return;
+ }
+
+ 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';
+
+ /* Skip past the ID field and the runlevel
+ * field (both are ignored) */
+ p = strchr( p, ':');
+
+ /* Now peal off the process field from the end
+ * of the string */
+ q = strrchr( p, ':');
+ if ( q == NULL || *(q+1) == '\0' ) {
+ fprintf(stderr, "Bad inittab entry: %s\n", buf);
+ continue;
+ } else {
+ *q='\0';
+ ++q;
+ }
+
+ /* Now peal off the action field */
+ r = strrchr( p, ':');
+ if ( r == NULL || *(r+1) == '\0') {
+ fprintf(stderr, "Bad inittab entry: %s\n", buf);
+ continue;
+ } else {
+ ++r;
+ }
+
+ /* Ok, now process it */
+ a = actions;
+ while (a->name != 0) {
+ if (strcmp(a->name, r) == 0) {
+ new_initAction( a, q, NULL);
+ foundIt=TRUE;
+ }
+ a++;
+ }
+ if (foundIt==TRUE)
+ continue;
+ else {
+ /* Choke on an unknown action */
+ fprintf(stderr, "Bad inittab entry: %s\n", buf);
+ }
+ }
+ return;
+}
+
+
extern int init_main(int argc, char **argv)
{
- int run_rc = FALSE;
+ initAction *a;
+ pid_t wpid;
+ int status;
int single = FALSE;
- int wait_for_enter_tty1 = TRUE;
- int wait_for_enter_tty2 = TRUE;
- pid_t pid1 = 0;
- pid_t pid2 = 0;
- struct stat statbuf;
- char which_vt1[30];
- char which_vt2[30];
- const char* const rc_script_command[] = { BB_INIT_SCRIPT, BB_INIT_SCRIPT, 0};
- const char* const getty1_command[] = { GETTY, GETTY, "38400", which_vt1, 0};
- const char* const getty2_command[] = { GETTY, GETTY, "38400", which_vt2, 0};
- const char* const shell_command[] = { SHELL, "-" SHELL, 0};
- const char* const* tty1_command = shell_command;
- const char* const* tty2_command = shell_command;
-#ifdef BB_INIT_CMD_IF_RC_SCRIPT_EXITS
- const char* const rc_exit_command[] = { "BB_INIT_CMD_IF_RC_SCRIPT_EXITS",
- "BB_INIT_CMD_IF_RC_SCRIPT_EXITS", 0 };
-#endif
-#ifdef DEBUG_INIT
- char *hello_msg_format =
- "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n";
-#else
- char *hello_msg_format =
- "init started: BusyBox v%s (%s) multi-call binary\r\n";
-#endif
-
#ifndef DEBUG_INIT
/* Expect to be PID 1 iff 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");
}
-#endif
- /* Set up sig handlers -- be sure to
- * clear all of these in run() */
+ /* 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(SIGINT, ctrl_alt_del_signal);
signal(SIGTERM, reboot_signal);
/* Turn off rebooting via CTL-ALT-DEL -- we get a
* SIGINT on CAD so we can shut things down gracefully... */
-#ifndef DEBUG_INIT
reboot(RB_DISABLE_CAD);
#endif
-
+
/* Figure out where the default console should be */
console_init();
/* Hello world */
#ifndef DEBUG_INIT
- message(CONSOLE|LOG, hello_msg_format, BB_VER, BB_BT);
+ message(CONSOLE|LOG,
+ "init started: BusyBox v%s (%s) multi-call binary\r\n",
+ BB_VER, BB_BT);
#else
- message(CONSOLE|LOG, hello_msg_format, getpid(), BB_VER, BB_BT);
+ message(CONSOLE|LOG,
+ "init(%d) started: BusyBox v%s (%s) multi-call binary\r\n",
+ getpid(), BB_VER, BB_BT);
#endif
if ( argc > 1 && (!strcmp(argv[1], "single") ||
!strcmp(argv[1], "-s") || !strcmp(argv[1], "1"))) {
single = TRUE;
- tty1_command = shell_command;
- tty2_command = shell_command;
+ /* Ask first then start a shell on tty2 */
+ if (second_console != NULL)
+ new_initAction( &(actions[3]), SHELL, second_console);
+ /* Ask first then start a shell on tty1 */
+ new_initAction( &(actions[3]), SHELL, console);
+ } else {
+ /* Not in single user mode -- see what inittab says */
+ parse_inittab();
}
- /* Make sure an init script exists before trying to run it */
- if (single==FALSE && stat(BB_INIT_SCRIPT, &statbuf)==0) {
- run_rc = TRUE;
- wait_for_enter_tty1 = FALSE;
- tty1_command = rc_script_command;
+ /* Now run everything that needs to be run */
+
+ /* First run sysinit */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == SYSINIT) {
+ waitfor(run(a->process, console, FALSE));
+ /* Now remove the "sysinit" entry from the list */
+ delete_initAction( a);
+ }
}
-
- /* Make sure /sbin/getty exists before trying to run it */
- if (stat(GETTY, &statbuf)==0) {
- char* where;
- /* First do tty2 */
- wait_for_enter_tty2 = FALSE;
- where = strrchr( second_console, '/');
- if ( where != NULL) {
- where++;
- strncpy( which_vt2, where, sizeof(which_vt2));
+ /* Next run anything that wants to block */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == WAIT) {
+ waitfor(run(a->process, console, FALSE));
+ /* Now remove the "wait" entry from the list */
+ delete_initAction( a);
}
- tty2_command = getty2_command;
-
- /* Check on hooking a getty onto tty1 */
- if (run_rc == FALSE && single==FALSE) {
- wait_for_enter_tty1 = FALSE;
- where = strrchr( console, '/');
- if ( where != NULL) {
- where++;
- strncpy( which_vt1, where, sizeof(which_vt1));
- }
- tty1_command = getty1_command;
+ }
+ /* Next run anything to be run only once */
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->action == ONCE) {
+ run(a->process, console, FALSE);
+ /* Now remove the "once" entry from the list */
+ delete_initAction( a);
}
}
-
- /* Ok, now launch the tty1_command and tty2_command */
+ /* Now run the looping stuff */
for (;;) {
- pid_t wpid;
- int status;
-
- if (pid1 == 0 && tty1_command) {
- pid1 = run(tty1_command, console, wait_for_enter_tty1);
- }
-#ifdef BB_FEATURE_INIT_SECOND_CONSOLE
- if (pid2 == 0 && tty2_command && second_console) {
- pid2 = run(tty2_command, second_console, wait_for_enter_tty2);
+ 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, console, FALSE);
+ break;
+ case ASKFIRST:
+ /* run the askfirst stuff */
+ a->pid = waitfor(run(a->process, console, TRUE));
+ break;
+ /* silence the compiler's whining */
+ default:
+ break;
+ }
+ }
}
-#endif
+
wpid = wait(&status);
+ /* Find out who died and clean up their corpse */
if (wpid > 0 ) {
message(LOG, "pid %d exited, status=%x.\n", wpid, status);
- }
- /* Don't respawn init script if it exits */
- if (wpid == pid1) {
- if (run_rc == FALSE) {
- pid1 = 0;
+ for( a=initActionList ; a; a=a->nextPtr) {
+ if (a->pid==wpid) {
+ a->pid=0;
+ }
}
-#ifdef BB_INIT_CMD_IF_RC_SCRIPT_EXITS
- else {
- pid1 = 0;
- run_rc=FALSE;
- wait_for_enter_tty1=TRUE;
- tty1_command=rc_exit_command;
- }
-#endif
}
-#ifdef BB_FEATURE_INIT_SECOND_CONSOLE
- if (wpid == pid2) {
- pid2 = 0;
- }
-#endif
- sleep(1);
- }
-}
-
-#else
-
-
-void parse_inittab(void)
-{
- FILE* file;
- char buf[256];
- char action[256]="";
- char process[256]="";
- char *p, *q;
-
-
- if ((file = fopen(INITTAB, "r")) < 0) {
- /* No inittab file -- set up some default behavior */
-
- /* FIXME */
- return;
- }
-
- while ( fgets(buf, 255, file) != NULL) {
- 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';
-
- /* Skip past the ID field and the runlevel
- * field (both are ignored) */
- p = strchr( p, ':');
-
- /* Now peal off the process field from the end
- * of the string */
- q = strrchr( p, ':');
- if ( q == NULL || q+1 == NULL)
- goto choke;
- *q='\0';
- strcpy( process, ++q);
- fprintf(stderr, "process=%s\n", process);
-
-
- /* Now peal off the action field */
- q = strrchr( p, ':');
- if ( q == NULL || q+1 == NULL)
- goto choke;
- strcpy( action, ++q);
- fprintf(stderr, "action=%s\n", action);
-
-
- /* Ok, now do the right thing */
+ sleep(1);
}
- return;
-
-choke:
- //message(CONSOLE, "Bad entry:");
- fprintf(stderr, "Bad inittab entry: %s", buf);
- while (1) sleep(1);
-
-}
-
-
-extern int init_main(int argc, char **argv)
-{
- parse_inittab();
- exit( TRUE);
}
-
-#endif
extern long getNum (const char *cp);
extern pid_t findInitPid();
+#if (__GLIBC__ < 2) && defined BB_SYSLOGD
+extern int vdprintf(int d, const char *format, va_list ap);
+#endif
#if defined BB_MTAB
#define whine_if_fstab_is_missing() {}
do_it_now:
- while (argc >= 1) {
+ while (--argc >= 0) {
int pid;
struct stat statbuf;
char pidpath[20]="/proc/";
fprintf(stderr, "kill: (%d) - No such pid\n", pid);
exit( FALSE);
}
+ fprintf(stderr, "sig = %d\n", sig);
if (kill (pid, sig) != 0) {
perror (*argv);
exit ( FALSE);
do_it_now:
- while (argc >= 1) {
+ while (--argc >= 0) {
int pid;
struct stat statbuf;
char pidpath[20]="/proc/";
fprintf(stderr, "kill: (%d) - No such pid\n", pid);
exit( FALSE);
}
+ fprintf(stderr, "sig = %d\n", sig);
if (kill (pid, sig) != 0) {
perror (*argv);
exit ( FALSE);
"\t /REGEXP/ Match specified regexp\n"
"\t (! inverts the meaning of the match)\n\n"
"\tand COMMAND can be:\n"
- "\t s/regexp/replacement/[gp]\n"
+ "\t s/regexp/replacement/[igp]\n"
"\t which attempt to match regexp against the pattern space\n"
"\t and if successful replaces the matched portion with replacement.\n\n"
"\t aTEXT\n"
#include <fcntl.h>
#include <signal.h>
#include <time.h>
+#include <utime.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
static int eofFlag;
static long dataCc;
static int outFd;
-static char outName[TAR_NAME_SIZE];
+static const char *outName;
+static int mode;
+static int uid;
+static int gid;
+static time_t mtime;
/*
* Static data associated with the tar file.
* message is required on errors.
*/
if (tostdoutFlag == FALSE) {
- if (outFd >= 0)
- (void) close (outFd);
+ if (outFd >= 0) {
+ close (outFd);
+ }
}
}
static void
readHeader (const TarHeader * hp, int fileCount, char **fileTable)
{
- int mode;
- int uid;
- int gid;
int checkSum;
- unsigned int major;
- unsigned int minor;
- long size;
- time_t mtime;
- const char *name;
int cc;
int hardLink;
int softLink;
int devFileFlag;
+ unsigned int major;
+ unsigned int minor;
+ long size;
+ struct utimbuf utb;
/*
* If the block is completely empty, then this is the end of the
* archive file. If the name is null, then just skip this header.
*/
- name = hp->name;
+ outName = hp->name;
- if (*name == '\0') {
+ if (*outName == '\0') {
for (cc = TAR_BLOCK_SIZE; cc > 0; cc--) {
- if (*name++)
+ if (*outName++)
return;
}
/*
* Check for a directory.
*/
- if (name[strlen (name) - 1] == '/')
+ if (outName[strlen (outName) - 1] == '/')
mode |= S_IFDIR;
/*
* Check for absolute paths in the file.
* If we find any, then warn the user and make them relative.
*/
- if (*name == '/') {
- while (*name == '/')
- name++;
+ if (*outName == '/') {
+ while (*outName == '/')
+ outName++;
if (warnedRoot==FALSE) {
fprintf (stderr,
* See if we want this file to be restored.
* If not, then set up to skip it.
*/
- if (wantFileName (name, fileCount, fileTable) == FALSE) {
+ if (wantFileName (outName, fileCount, fileTable) == FALSE) {
if ( !hardLink && !softLink && (S_ISREG (mode) || S_ISCHR (mode)
|| S_ISBLK (mode) || S_ISSOCK(mode) || S_ISFIFO(mode) ) ) {
inHeader = (size == 0)? TRUE : FALSE;
else
printf ("%9ld %s ", size, timeString (mtime));
}
- printf ("%s", name);
+ printf ("%s", outName);
if (hardLink)
printf (" (link to \"%s\")", hp->linkName);
* We really want to extract the file.
*/
if (verboseFlag==TRUE)
- printf ("x %s\n", name);
+ printf ("x %s\n", outName);
if (hardLink) {
- if (link (hp->linkName, name) < 0)
- perror (name);
- chown(name, uid, gid);
- chmod(name, mode);
+ if (link (hp->linkName, outName) < 0)
+ perror (outName);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
return;
}
if (softLink) {
#ifdef S_ISLNK
- if (symlink (hp->linkName, name) < 0)
- perror (name);
- chown(name, uid, gid);
- chmod(name, mode);
+ if (symlink (hp->linkName, outName) < 0)
+ perror (outName);
+ /* Try to change ownership of the symlink.
+ * If libs doesn't support that, don't bother.
+ * Changing the pointed-to file is the Wrong Thing(tm).
+ */
+#if (__GLIBC__ >= 2) && (__GLIBC_MINOR__ >= 1)
+ lchown(outName, uid, gid);
+#endif
+
+ /* Do not change permissions or date on symlink,
+ * since it changes the pointed to file instead. duh. */
#else
fprintf (stderr, "Cannot create symbolic links\n");
#endif
* If the file is a directory, then just create the path.
*/
if (S_ISDIR (mode)) {
- createPath (name, mode);
- chown(name, uid, gid);
- chmod(name, mode);
-
+ createPath (outName, mode);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
return;
}
* There is a file to write.
* First create the path to it if necessary with default permissions.
*/
- createPath (name, 0777);
+ createPath (outName, 0777);
inHeader = (size == 0)? TRUE : FALSE;
dataCc = size;
else {
if ( S_ISCHR(mode) || S_ISBLK(mode) || S_ISSOCK(mode) ) {
devFileFlag = TRUE;
- outFd = mknod (name, mode, makedev(major, minor) );
+ outFd = mknod (outName, mode, makedev(major, minor) );
}
else if (S_ISFIFO(mode) ) {
devFileFlag = TRUE;
- outFd = mkfifo(name, mode);
+ outFd = mkfifo(outName, mode);
} else {
- outFd = open (name, O_WRONLY | O_CREAT | O_TRUNC, mode);
+ outFd = open (outName, O_WRONLY | O_CREAT | O_TRUNC, mode);
}
if (outFd < 0) {
- perror (name);
+ perror (outName);
skipFileFlag = TRUE;
return;
}
- chown(name, uid, gid);
- chmod(name, mode);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
}
* If the file is empty, then that's all we need to do.
*/
if (size == 0 && (tostdoutFlag == FALSE) && (devFileFlag == FALSE)) {
- (void) close (outFd);
+ close (outFd);
outFd = -1;
}
}
if (fullWrite (outFd, cp, count) < 0) {
perror (outName);
if (tostdoutFlag == FALSE) {
- (void) close (outFd);
+ close (outFd);
outFd = -1;
}
skipFileFlag = TRUE;
}
/*
- * If the write failed, close the file and disable further
- * writes to this file.
+ * Check if we are done writing to the file now.
*/
if (dataCc <= 0 && tostdoutFlag == FALSE) {
+ struct utimbuf utb;
if (close (outFd))
perror (outName);
+ /* Set the file time */
+ utb.actime = mtime;
+ utb.modtime = mtime;
+ utime (outName, &utb);
+ /* Set the file permissions */
+ chown(outName, uid, gid);
+ chmod(outName, mode);
+
outFd = -1;
}
}
static void saveFile (const char *fileName, int seeLinks)
{
int status;
- int mode;
struct stat statbuf;
if (verboseFlag==TRUE)
#endif
-#if defined (BB_CHOWN) || defined (BB_CP) || defined (BB_FIND) || defined (BB_LS) || defined (BB_INSMOD)
+#if defined (BB_CHMOD_CHOWN_CHGRP) || defined (BB_CP) || defined (BB_FIND) || defined (BB_LS) || defined (BB_INSMOD)
/*
* Walk down all the directories under the specified
* location, and do something (something specified
-#if defined BB_DF | defined BB_MTAB
+#if defined BB_DF || defined BB_MTAB
/*
* Given a block device, find the mount table entry if that block device
* is mounted.
endmntent(mountTable);
return mountEntry;
}
-
#endif
}
#endif
+#if (__GLIBC__ < 2) && (defined BB_SYSLOGD || defined BB_INIT)
+extern int vdprintf(int d, const char *format, va_list ap)
+{
+ char buf[BUF_SIZE];
+ int len;
+
+ len = vsprintf(buf, format, ap);
+ return write(d, buf, len);
+}
+#endif
+
/* END CODE */
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