diff options
| -rw-r--r-- | Changelog | 2 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | busybox.def.h | 1 | ||||
| -rw-r--r-- | init.c | 126 | ||||
| -rw-r--r-- | init/init.c | 126 | ||||
| -rw-r--r-- | internal.h | 2 | ||||
| -rw-r--r-- | mount.c | 54 | ||||
| -rw-r--r-- | swaponoff.c | 23 | ||||
| -rw-r--r-- | umount.c | 192 | ||||
| -rw-r--r-- | util-linux/mount.c | 54 | ||||
| -rw-r--r-- | util-linux/swaponoff.c | 23 | ||||
| -rw-r--r-- | util-linux/umount.c | 192 | ||||
| -rw-r--r-- | utility.c | 14 |
13 files changed, 457 insertions, 354 deletions
@@ -84,6 +84,8 @@ - `fdflush', `length' and `printf' crashed when run without arguments - `fdflush' tried to flush itself using *argv - added "skip" and "seek" to dd. + * swapoff -a was not working. Now it is. + * init did not cleanly unmount filesystems on reboot. Now it does. -Erik Andersen @@ -62,7 +62,7 @@ endif # -D_GNU_SOURCE is needed because environ is used in init.c ifeq ($(DODEBUG),true) - CFLAGS += -Wall -g -D_GNU_SOURCE -DDEBUG_INIT + CFLAGS += -Wall -g -D_GNU_SOURCE STRIP = LDFLAGS = else diff --git a/busybox.def.h b/busybox.def.h index f8c6e6e..e2f5dd3 100644 --- a/busybox.def.h +++ b/busybox.def.h @@ -59,7 +59,6 @@ #define BB_MOUNT #define BB_NFSMOUNT //#define BB_MT -//#define BB_MTAB #define BB_NSLOOKUP #define BB_PING #define BB_POWEROFF @@ -22,6 +22,11 @@ * */ +/* Turn this on to disable all the dangerous + rebooting stuff when debugging. +#define DEBUG_INIT +*/ + #include "internal.h" #include <stdio.h> #include <string.h> @@ -78,7 +83,8 @@ typedef enum { RESPAWN, ASKFIRST, WAIT, - ONCE + ONCE, + CTRLALTDEL } initActionEnum; /* And now a list of the actions we support in the version of init */ @@ -93,6 +99,7 @@ static const struct initActionType actions[] = { {"askfirst", ASKFIRST}, {"wait", WAIT}, {"once", ONCE}, + {"ctrlaltdel", CTRLALTDEL}, {0} }; @@ -113,6 +120,7 @@ static char *log = VT_LOG; static int kernelVersion = 0; static char termType[32] = "TERM=ansi"; static char console[32] = _PATH_CONSOLE; +static void delete_initAction(initAction * action); /* print a message to the specified device: @@ -131,8 +139,8 @@ void message(int device, char *fmt, ...) va_start(arguments, fmt); vsnprintf(msg, sizeof(msg), fmt, arguments); va_end(arguments); - openlog("init", 0, LOG_DAEMON); - syslog(LOG_DAEMON | LOG_NOTICE, msg); + openlog("init", 0, LOG_USER); + syslog(LOG_USER|LOG_INFO, msg); closelog(); } #else @@ -146,11 +154,12 @@ void message(int device, char *fmt, ...) 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; + } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) { + log_fd = -2; fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log); fflush(stderr); - return; + log = NULL; + device = CONSOLE; } } if ((device & LOG) && (log_fd >= 0)) { @@ -303,10 +312,10 @@ static void console_init() /* 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; + message(LOG | CONSOLE, + "serial console detected. Disabling virtual terminals.\r\n"); } close(fd); } @@ -319,6 +328,7 @@ static pid_t run(char *command, char *terminal, int get_enter) pid_t pid; char *tmpCmd; char *cmd[255]; + char buf[255]; static const char press_enter[] = "\nPlease press Enter to activate this console. "; @@ -333,7 +343,9 @@ static pid_t run(char *command, char *terminal, int get_enter) if ((pid = fork()) == 0) { +#ifdef DEBUG_INIT pid_t shell_pgid = getpid(); +#endif /* Clean up */ close(0); @@ -369,30 +381,40 @@ static pid_t run(char *command, char *terminal, int get_enter) */ char c; +#ifdef DEBUG_INIT message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n", command, shell_pgid, terminal); +#endif write(fileno(stdout), press_enter, sizeof(press_enter) - 1); read(fileno(stdin), &c, 1); } +#ifdef DEBUG_INIT /* Log the process name and args */ - message(LOG, "Starting pid %d, console %s: '", + message(LOG, "Starting pid %d, console %s: '%s'\r\n", 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++; + + /* See if any special /bin/sh requiring characters are present */ + if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) { + cmd[0] = SHELL; + cmd[1] = "-c"; + strcpy(buf, "exec "); + strncat(buf, command, sizeof(buf) - strlen(buf) - 1); + cmd[2] = buf; + cmd[3] = NULL; + } else { + /* 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; } - 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. */ @@ -413,9 +435,8 @@ static int waitfor(char *command, char *terminal, int get_enter) while (1) { wpid = wait(&status); - if (wpid > 0) { - message(LOG, "Process '%s' (pid %d) exited.\n", command, wpid); - break; + if (wpid > 0 && wpid != pid) { + continue; } if (wpid == pid) break; @@ -424,7 +445,7 @@ static int waitfor(char *command, char *terminal, int get_enter) } /* Make sure there is enough memory to do something useful. * - * Calls swapon if needed so be sure /proc is mounted. */ + * Calls "swapon -a" if needed so be sure /etc/fstab is present... */ static void check_memory() { struct stat statBuf; @@ -434,7 +455,7 @@ static void check_memory() if (stat("/etc/fstab", &statBuf) == 0) { /* Try to turn on swap */ - waitfor("/bin/swapon swapon -a", log, FALSE); + system("/sbin/swapon swapon -a"); if (mem_total() < 3500) goto goodnight; } else @@ -448,31 +469,45 @@ static void check_memory() sleep(1); } +/* Run all commands to be run right before halt/reboot */ +static void run_lastAction(void) +{ + initAction *a; + for (a = initActionList; a; a = a->nextPtr) { + if (a->action == CTRLALTDEL) { + waitfor(a->process, a->console, FALSE); + delete_initAction(a); + } + } +} + + #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"); + + message(CONSOLE|LOG, "\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"); + message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n"); kill(-1, SIGTERM); - sleep(5); + sleep(1); sync(); - message(CONSOLE, "Sending SIGKILL to all processes.\r\n"); + message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n"); kill(-1, SIGKILL); - sleep(5); + sleep(1); + + /* run everything to be run at "ctrlaltdel" */ + run_lastAction(); - 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 */ @@ -484,14 +519,14 @@ static void shutdown_system(void) static void halt_signal(int sig) { shutdown_system(); - message(CONSOLE, + message(CONSOLE|LOG, "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); + sleep(2); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) if (sig == SIGUSR2) @@ -505,7 +540,7 @@ static void halt_signal(int sig) static void reboot_signal(int sig) { shutdown_system(); - message(CONSOLE, "Please stand by while rebooting the system.\r\n"); + message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n"); sync(); /* allow time for last message to reach serial console */ @@ -631,7 +666,7 @@ void new_initAction(initActionEnum action, char *process, char *cons) // newAction->process, newAction->action, newAction->console); } -void delete_initAction(initAction * action) +static void delete_initAction(initAction * action) { initAction *a, *b = NULL; @@ -669,6 +704,10 @@ void parse_inittab(void) if (file == NULL) { /* No inittab file -- set up some default behavior */ #endif + /* Swapoff on halt/reboot */ + new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console); + /* Umount all filesystems on halt/reboot */ + new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console); /* Askfirst shell on tty1 */ new_initAction(ASKFIRST, SHELL, console); /* Askfirst shell on tty2 */ @@ -756,6 +795,8 @@ void parse_inittab(void) #endif } + + extern int init_main(int argc, char **argv) { initAction *a; @@ -768,9 +809,6 @@ extern int init_main(int argc, char **argv) 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); @@ -838,6 +876,10 @@ extern int init_main(int argc, char **argv) * 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); + strncpy(argv[1], "\0", strlen(argv[1])+1); /* Now run everything that needs to be run */ diff --git a/init/init.c b/init/init.c index 899dca4..2f2203b 100644 --- a/init/init.c +++ b/init/init.c @@ -22,6 +22,11 @@ * */ +/* Turn this on to disable all the dangerous + rebooting stuff when debugging. +#define DEBUG_INIT +*/ + #include "internal.h" #include <stdio.h> #include <string.h> @@ -78,7 +83,8 @@ typedef enum { RESPAWN, ASKFIRST, WAIT, - ONCE + ONCE, + CTRLALTDEL } initActionEnum; /* And now a list of the actions we support in the version of init */ @@ -93,6 +99,7 @@ static const struct initActionType actions[] = { {"askfirst", ASKFIRST}, {"wait", WAIT}, {"once", ONCE}, + {"ctrlaltdel", CTRLALTDEL}, {0} }; @@ -113,6 +120,7 @@ static char *log = VT_LOG; static int kernelVersion = 0; static char termType[32] = "TERM=ansi"; static char console[32] = _PATH_CONSOLE; +static void delete_initAction(initAction * action); /* print a message to the specified device: @@ -131,8 +139,8 @@ void message(int device, char *fmt, ...) va_start(arguments, fmt); vsnprintf(msg, sizeof(msg), fmt, arguments); va_end(arguments); - openlog("init", 0, LOG_DAEMON); - syslog(LOG_DAEMON | LOG_NOTICE, msg); + openlog("init", 0, LOG_USER); + syslog(LOG_USER|LOG_INFO, msg); closelog(); } #else @@ -146,11 +154,12 @@ void message(int device, char *fmt, ...) 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; + } else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) { + log_fd = -2; fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log); fflush(stderr); - return; + log = NULL; + device = CONSOLE; } } if ((device & LOG) && (log_fd >= 0)) { @@ -303,10 +312,10 @@ static void console_init() /* 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; + message(LOG | CONSOLE, + "serial console detected. Disabling virtual terminals.\r\n"); } close(fd); } @@ -319,6 +328,7 @@ static pid_t run(char *command, char *terminal, int get_enter) pid_t pid; char *tmpCmd; char *cmd[255]; + char buf[255]; static const char press_enter[] = "\nPlease press Enter to activate this console. "; @@ -333,7 +343,9 @@ static pid_t run(char *command, char *terminal, int get_enter) if ((pid = fork()) == 0) { +#ifdef DEBUG_INIT pid_t shell_pgid = getpid(); +#endif /* Clean up */ close(0); @@ -369,30 +381,40 @@ static pid_t run(char *command, char *terminal, int get_enter) */ char c; +#ifdef DEBUG_INIT message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n", command, shell_pgid, terminal); +#endif write(fileno(stdout), press_enter, sizeof(press_enter) - 1); read(fileno(stdin), &c, 1); } +#ifdef DEBUG_INIT /* Log the process name and args */ - message(LOG, "Starting pid %d, console %s: '", + message(LOG, "Starting pid %d, console %s: '%s'\r\n", 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++; + + /* See if any special /bin/sh requiring characters are present */ + if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) { + cmd[0] = SHELL; + cmd[1] = "-c"; + strcpy(buf, "exec "); + strncat(buf, command, sizeof(buf) - strlen(buf) - 1); + cmd[2] = buf; + cmd[3] = NULL; + } else { + /* 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; } - 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. */ @@ -413,9 +435,8 @@ static int waitfor(char *command, char *terminal, int get_enter) while (1) { wpid = wait(&status); - if (wpid > 0) { - message(LOG, "Process '%s' (pid %d) exited.\n", command, wpid); - break; + if (wpid > 0 && wpid != pid) { + continue; } if (wpid == pid) break; @@ -424,7 +445,7 @@ static int waitfor(char *command, char *terminal, int get_enter) } /* Make sure there is enough memory to do something useful. * - * Calls swapon if needed so be sure /proc is mounted. */ + * Calls "swapon -a" if needed so be sure /etc/fstab is present... */ static void check_memory() { struct stat statBuf; @@ -434,7 +455,7 @@ static void check_memory() if (stat("/etc/fstab", &statBuf) == 0) { /* Try to turn on swap */ - waitfor("/bin/swapon swapon -a", log, FALSE); + system("/sbin/swapon swapon -a"); if (mem_total() < 3500) goto goodnight; } else @@ -448,31 +469,45 @@ static void check_memory() sleep(1); } +/* Run all commands to be run right before halt/reboot */ +static void run_lastAction(void) +{ + initAction *a; + for (a = initActionList; a; a = a->nextPtr) { + if (a->action == CTRLALTDEL) { + waitfor(a->process, a->console, FALSE); + delete_initAction(a); + } + } +} + + #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"); + + message(CONSOLE|LOG, "\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"); + message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n"); kill(-1, SIGTERM); - sleep(5); + sleep(1); sync(); - message(CONSOLE, "Sending SIGKILL to all processes.\r\n"); + message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n"); kill(-1, SIGKILL); - sleep(5); + sleep(1); + + /* run everything to be run at "ctrlaltdel" */ + run_lastAction(); - 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 */ @@ -484,14 +519,14 @@ static void shutdown_system(void) static void halt_signal(int sig) { shutdown_system(); - message(CONSOLE, + message(CONSOLE|LOG, "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); + sleep(2); #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0) if (sig == SIGUSR2) @@ -505,7 +540,7 @@ static void halt_signal(int sig) static void reboot_signal(int sig) { shutdown_system(); - message(CONSOLE, "Please stand by while rebooting the system.\r\n"); + message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n"); sync(); /* allow time for last message to reach serial console */ @@ -631,7 +666,7 @@ void new_initAction(initActionEnum action, char *process, char *cons) // newAction->process, newAction->action, newAction->console); } -void delete_initAction(initAction * action) +static void delete_initAction(initAction * action) { initAction *a, *b = NULL; @@ -669,6 +704,10 @@ void parse_inittab(void) if (file == NULL) { /* No inittab file -- set up some default behavior */ #endif + /* Swapoff on halt/reboot */ + new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console); + /* Umount all filesystems on halt/reboot */ + new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console); /* Askfirst shell on tty1 */ new_initAction(ASKFIRST, SHELL, console); /* Askfirst shell on tty2 */ @@ -756,6 +795,8 @@ void parse_inittab(void) #endif } + + extern int init_main(int argc, char **argv) { initAction *a; @@ -768,9 +809,6 @@ extern int init_main(int argc, char **argv) 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); @@ -838,6 +876,10 @@ extern int init_main(int argc, char **argv) * 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); + strncpy(argv[1], "\0", strlen(argv[1])+1); /* Now run everything that needs to be run */ @@ -31,6 +31,7 @@ #include <string.h> #include <unistd.h> #include <sys/stat.h> +//#include <sys/param.h> #include <mntent.h> @@ -186,6 +187,7 @@ extern pid_t findInitPid(); #if defined BB_INIT || defined BB_SYSLOGD extern int device_open(char *device, int mode); #endif +extern void whine_if_fstab_is_missing(); #if defined BB_FEATURE_MOUNT_LOOP extern int del_loop(const char *device); @@ -53,7 +53,7 @@ #include <linux/loop.h> -static int use_loop = 0; +static int use_loop = FALSE; #endif extern const char mtab_file[]; /* Defined in utility.c */ @@ -114,13 +114,14 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, char *mtab_opts) { int status = 0; + char *lofile = NULL; #if defined BB_MTAB if (fakeIt == FALSE) #endif { #if defined BB_FEATURE_MOUNT_LOOP - if (use_loop) { + if (use_loop==TRUE) { int loro = flags & MS_RDONLY; char *lofile = specialfile; @@ -137,6 +138,7 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, fprintf(stderr, "WARNING: loop device is read-only\n"); flags &= ~MS_RDONLY; } + use_loop = FALSE; } #endif status = @@ -157,7 +159,7 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, /* Bummer. mount failed. Clean up */ #if defined BB_FEATURE_MOUNT_LOOP - if (specialfile != NULL) { + if (lofile != NULL) { del_loop(specialfile); } #endif @@ -166,20 +168,6 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, -#if defined BB_MTAB -#define whine_if_fstab_is_missing() {} -#else -extern void whine_if_fstab_is_missing() -{ - struct stat statBuf; - - if (stat("/etc/fstab", &statBuf) < 0) - fprintf(stderr, - "/etc/fstab file missing -- install one to name /dev/root.\n\n"); -} -#endif - - /* Seperate standard mount options from the nonstandard string options */ static void parse_mount_options(char *options, unsigned long *flags, char *strflags) @@ -204,7 +192,7 @@ parse_mount_options(char *options, unsigned long *flags, char *strflags) } #if defined BB_FEATURE_MOUNT_LOOP if (gotone == FALSE && !strcasecmp("loop", options)) { /* loop device support */ - use_loop = 1; + use_loop = TRUE; gotone = TRUE; } #endif @@ -229,7 +217,7 @@ parse_mount_options(char *options, unsigned long *flags, char *strflags) int mount_one(char *blockDevice, char *directory, char *filesystemType, unsigned long flags, char *string_flags, int useMtab, int fakeIt, - char *mtab_opts) + char *mtab_opts, int whineOnErrors) { int status = 0; @@ -270,9 +258,11 @@ mount_one(char *blockDevice, char *directory, char *filesystemType, fakeIt, mtab_opts); } - if (status == FALSE) { - fprintf(stderr, "Mounting %s on %s failed: %s\n", - blockDevice, directory, strerror(errno)); + if (status == FALSE && whineOnErrors == TRUE) { + if (whineOnErrors == TRUE) { + fprintf(stderr, "Mounting %s on %s failed: %s\n", + blockDevice, directory, strerror(errno)); + } return (FALSE); } return (TRUE); @@ -387,18 +377,28 @@ extern int mount_main(int argc, char **argv) exit(FALSE); } while ((m = getmntent(f)) != NULL) { - // If the file system isn't noauto, and isn't mounted on /, + // If the file system isn't noauto, // and isn't swap or nfs, then mount it if ((!strstr(m->mnt_opts, "noauto")) && - (m->mnt_dir[1] != '\0') && (!strstr(m->mnt_type, "swap")) && (!strstr(m->mnt_type, "nfs"))) { flags = 0; *string_flags = '\0'; parse_mount_options(m->mnt_opts, &flags, string_flags); - mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, + /* If the directory is /, try to remount + * with the options specified in fstab */ + if (m->mnt_dir[0] == '/' && m->mnt_dir[1] == '\0') { + flags |= MS_REMOUNT; + } + if (mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, flags, string_flags, useMtab, fakeIt, - extra_opts); + extra_opts, FALSE)) + { + /* Try again, but this time try a remount */ + mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, + flags|MS_REMOUNT, string_flags, useMtab, fakeIt, + extra_opts, TRUE); + } } } endmntent(f); @@ -414,7 +414,7 @@ extern int mount_main(int argc, char **argv) #endif exit(mount_one(device, directory, filesystemType, flags, string_flags, useMtab, fakeIt, - extra_opts)); + extra_opts, TRUE)); } else { goto goodbye; } diff --git a/swaponoff.c b/swaponoff.c index 6bda222..bc096ea 100644 --- a/swaponoff.c +++ b/swaponoff.c @@ -36,13 +36,16 @@ static int whichApp; static const char *appName; static const char swapoff_usage[] = + "swapoff [OPTION] [device]\n\n" + "Stop swapping virtual memory pages on the given device.\n\n" + "Options:\n" + "\t-a\tStop swapping on all swap devices\n"; - "swapoff device\n" - "\nStop swapping virtual memory pages on the given device.\n"; static const char swapon_usage[] = - - "swapon device\n" - "\nStart swapping virtual memory pages on the given device.\n"; + "swapon [OPTION] [device]\n\n" + "Start swapping virtual memory pages on the given device.\n\n" + "Options:\n" + "\t-a\tStart swapping on all swap devices\n"; #define SWAPON_APP 1 @@ -85,12 +88,6 @@ static void do_em_all() extern int swap_on_off_main(int argc, char **argv) { - struct stat statBuf; - - if (stat("/etc/fstab", &statBuf) < 0) - fprintf(stderr, - "/etc/fstab file missing -- Please install one.\n\n"); - if (strcmp(*argv, "swapon") == 0) { appName = *argv; whichApp = SWAPON_APP; @@ -100,8 +97,9 @@ extern int swap_on_off_main(int argc, char **argv) whichApp = SWAPOFF_APP; } - if (argc < 2) + if (argc != 2) { goto usage_and_exit; + } argc--; argv++; @@ -110,6 +108,7 @@ extern int swap_on_off_main(int argc, char **argv) while (*++(*argv)) switch (**argv) { case 'a': + whine_if_fstab_is_missing(); do_em_all(); break; default: @@ -29,6 +29,7 @@ #include <fstab.h> #include <errno.h> + static const char umount_usage[] = "umount [flags] filesystem|directory\n\n" "Flags:\n" "\t-a:\tUnmount all file systems" @@ -57,7 +58,99 @@ static int umountAll = FALSE; static int doRemount = FALSE; extern const char mtab_file[]; /* Defined in utility.c */ -#define MIN(x,y) (x > y ? x : y) + +/* These functions are here because the getmntent functions do not appear + * to be re-entrant, which leads to all sorts of problems when we try to + * use them recursively - randolph + */ +void mtab_read(void) +{ + struct _mtab_entry_t *entry = NULL; + struct mntent *e; + FILE *fp; + + if (mtab_cache != NULL) + return; + + if ((fp = setmntent(mtab_file, "r")) == NULL) { + fprintf(stderr, "Cannot open %s\n", mtab_file); + return; + } + while ((e = getmntent(fp))) { + entry = malloc(sizeof(struct _mtab_entry_t)); + + entry->device = strdup(e->mnt_fsname); + entry->mountpt = strdup(e->mnt_dir); + entry->next = mtab_cache; + mtab_cache = entry; + } + endmntent(fp); +} + +char *mtab_getinfo(const char *match, const char which) +{ + struct _mtab_entry_t *cur = mtab_cache; + + while (cur) { + if (strcmp(cur->mountpt, match) == 0 || + strcmp(cur->device, match) == 0) { + if (which == MTAB_GETMOUNTPT) { + return cur->mountpt; + } else { +#if !defined BB_MTAB + if (strcmp(cur->device, "/dev/root") == 0) { + struct fstab *fstabItem; + + fstabItem = getfsfile("/"); + if (fstabItem != NULL) + return fstabItem->fs_spec; + } +#endif + return cur->device; + } + } + cur = cur->next; + } + return NULL; +} + +char *mtab_first(void **iter) +{ + struct _mtab_entry_t *mtab_iter; + + if (!iter) + return NULL; + mtab_iter = mtab_cache; + *iter = (void *) mtab_iter; + return mtab_next(iter); +} + +char *mtab_next(void **iter) +{ + char *mp; + + if (iter == NULL || *iter == NULL) + return NULL; + mp = ((struct _mtab_entry_t *) (*iter))->mountpt; + *iter = (void *) ((struct _mtab_entry_t *) (*iter))->next; + return mp; +} + +void mtab_free(void) +{ + struct _mtab_entry_t *this, *next; + + this = mtab_cache; + while (this) { + next = this->next; + if (this->device) + free(this->device); + if (this->mountpt) + free(this->mountpt); + free(this); + this = next; + } +} static int do_umount(const char *name, int useMtab) { @@ -105,6 +198,9 @@ static int umount_all(int useMtab) void *iter; for (mountpt = mtab_first(&iter); mountpt; mountpt = mtab_next(&iter)) { + /* Never umount /proc on a umount -a */ + if (strstr(mountpt, "proc")!= NULL) + continue; status = do_umount(mountpt, useMtab); if (status != 0) { /* Don't bother retrying the umount on busy devices */ @@ -163,97 +259,3 @@ extern int umount_main(int argc, char **argv) } } - - -/* These functions are here because the getmntent functions do not appear - * to be re-entrant, which leads to all sorts of problems when we try to - * use them recursively - randolph - */ -void mtab_read(void) -{ - struct _mtab_entry_t *entry = NULL; - struct mntent *e; - FILE *fp; - - if (mtab_cache != NULL) - return; - - if ((fp = setmntent(mtab_file, "r")) == NULL) { - fprintf(stderr, "Cannot open %s\n", mtab_file); - return; - } - while ((e = getmntent(fp))) { - entry = malloc(sizeof(struct _mtab_entry_t)); - - entry->device = strdup(e->mnt_fsname); - entry->mountpt = strdup(e->mnt_dir); - entry->next = mtab_cache; - mtab_cache = entry; - } - endmntent(fp); -} - -char *mtab_getinfo(const char *match, const char which) -{ - struct _mtab_entry_t *cur = mtab_cache; - - while (cur) { - if (strcmp(cur->mountpt, match) == 0 || - strcmp(cur->device, match) == 0) { - if (which == MTAB_GETMOUNTPT) { - return cur->mountpt; - } else { -#if !defined BB_MTAB - if (strcmp(cur->device, "/dev/root") == 0) { - struct fstab *fstabItem; - - fstabItem = getfsfile("/"); - if (fstabItem != NULL) - return fstabItem->fs_spec; - } -#endif - return cur->device; - } - } - cur = cur->next; - } - return NULL; -} - -char *mtab_first(void **iter) -{ - struct _mtab_entry_t *mtab_iter; - - if (!iter) - return NULL; - mtab_iter = mtab_cache; - *iter = (void *) mtab_iter; - return mtab_next(iter); -} - -char *mtab_next(void **iter) -{ - char *mp; - - if (iter == NULL || *iter == NULL) - return NULL; - mp = ((struct _mtab_entry_t *) (*iter))->mountpt; - *iter = (void *) ((struct _mtab_entry_t *) (*iter))->next; - return mp; -} - -void mtab_free(void) -{ - struct _mtab_entry_t *this, *next; - - this = mtab_cache; - while (this) { - next = this->next; - if (this->device) - free(this->device); - if (this->mountpt) - free(this->mountpt); - free(this); - this = next; - } -} diff --git a/util-linux/mount.c b/util-linux/mount.c index c3e3bbd..37f789d 100644 --- a/util-linux/mount.c +++ b/util-linux/mount.c @@ -53,7 +53,7 @@ #include <linux/loop.h> -static int use_loop = 0; +static int use_loop = FALSE; #endif extern const char mtab_file[]; /* Defined in utility.c */ @@ -114,13 +114,14 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, char *mtab_opts) { int status = 0; + char *lofile = NULL; #if defined BB_MTAB if (fakeIt == FALSE) #endif { #if defined BB_FEATURE_MOUNT_LOOP - if (use_loop) { + if (use_loop==TRUE) { int loro = flags & MS_RDONLY; char *lofile = specialfile; @@ -137,6 +138,7 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, fprintf(stderr, "WARNING: loop device is read-only\n"); flags &= ~MS_RDONLY; } + use_loop = FALSE; } #endif status = @@ -157,7 +159,7 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, /* Bummer. mount failed. Clean up */ #if defined BB_FEATURE_MOUNT_LOOP - if (specialfile != NULL) { + if (lofile != NULL) { del_loop(specialfile); } #endif @@ -166,20 +168,6 @@ do_mount(char *specialfile, char *dir, char *filesystemtype, -#if defined BB_MTAB -#define whine_if_fstab_is_missing() {} -#else -extern void whine_if_fstab_is_missing() -{ - struct stat statBuf; - - if (stat("/etc/fstab", &statBuf) < 0) - fprintf(stderr, - "/etc/fstab file missing -- install one to name /dev/root.\n\n"); -} -#endif - - /* Seperate standard mount options from the nonstandard string options */ static void parse_mount_options(char *options, unsigned long *flags, char *strflags) @@ -204,7 +192,7 @@ parse_mount_options(char *options, unsigned long *flags, char *strflags) } #if defined BB_FEATURE_MOUNT_LOOP if (gotone == FALSE && !strcasecmp("loop", options)) { /* loop device support */ - use_loop = 1; + use_loop = TRUE; gotone = TRUE; } #endif @@ -229,7 +217,7 @@ parse_mount_options(char *options, unsigned long *flags, char *strflags) int mount_one(char *blockDevice, char *directory, char *filesystemType, unsigned long flags, char *string_flags, int useMtab, int fakeIt, - char *mtab_opts) + char *mtab_opts, int whineOnErrors) { int status = 0; @@ -270,9 +258,11 @@ mount_one(char *blockDevice, char *directory, char *filesystemType, fakeIt, mtab_opts); } - if (status == FALSE) { - fprintf(stderr, "Mounting %s on %s failed: %s\n", - blockDevice, directory, strerror(errno)); + if (status == FALSE && whineOnErrors == TRUE) { + if (whineOnErrors == TRUE) { + fprintf(stderr, "Mounting %s on %s failed: %s\n", + blockDevice, directory, strerror(errno)); + } return (FALSE); } return (TRUE); @@ -387,18 +377,28 @@ extern int mount_main(int argc, char **argv) exit(FALSE); } while ((m = getmntent(f)) != NULL) { - // If the file system isn't noauto, and isn't mounted on /, + // If the file system isn't noauto, // and isn't swap or nfs, then mount it if ((!strstr(m->mnt_opts, "noauto")) && - (m->mnt_dir[1] != '\0') && (!strstr(m->mnt_type, "swap")) && (!strstr(m->mnt_type, "nfs"))) { flags = 0; *string_flags = '\0'; parse_mount_options(m->mnt_opts, &flags, string_flags); - mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, + /* If the directory is /, try to remount + * with the options specified in fstab */ + if (m->mnt_dir[0] == '/' && m->mnt_dir[1] == '\0') { + flags |= MS_REMOUNT; + } + if (mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, flags, string_flags, useMtab, fakeIt, - extra_opts); + extra_opts, FALSE)) + { + /* Try again, but this time try a remount */ + mount_one(m->mnt_fsname, m->mnt_dir, m->mnt_type, + flags|MS_REMOUNT, string_flags, useMtab, fakeIt, + extra_opts, TRUE); + } } } endmntent(f); @@ -414,7 +414,7 @@ extern int mount_main(int argc, char **argv) #endif exit(mount_one(device, directory, filesystemType, flags, string_flags, useMtab, fakeIt, - extra_opts)); + extra_opts, TRUE)); } else { goto goodbye; } diff --git a/util-linux/swaponoff.c b/util-linux/swaponoff.c index 6bda222..bc096ea 100644 --- a/util-linux/swaponoff.c +++ b/util-linux/swaponoff.c @@ -36,13 +36,16 @@ static int whichApp; static const char *appName; static const char swapoff_usage[] = + "swapoff [OPTION] [device]\n\n" + "Stop swapping virtual memory pages on the given device.\n\n" + "Options:\n" + "\t-a\tStop swapping on all swap devices\n"; - "swapoff device\n" - "\nStop swapping virtual memory pages on the given device.\n"; static const char swapon_usage[] = - - "swapon device\n" - "\nStart swapping virtual memory pages on the given device.\n"; + "swapon [OPTION] [device]\n\n" + "Start swapping virtual memory pages on the given device.\n\n" + "Options:\n" + "\t-a\tStart swapping on all swap devices\n"; #define SWAPON_APP 1 @@ -85,12 +88,6 @@ static void do_em_all() extern int swap_on_off_main(int argc, char **argv) { - struct stat statBuf; - - if (stat("/etc/fstab", &statBuf) < 0) - fprintf(stderr, - "/etc/fstab file missing -- Please install one.\n\n"); - if (strcmp(*argv, "swapon") == 0) { appName = *argv; whichApp = SWAPON_APP; @@ -100,8 +97,9 @@ extern int swap_on_off_main(int argc, char **argv) whichApp = SWAPOFF_APP; } - if (argc < 2) + if (argc != 2) { goto usage_and_exit; + } argc--; argv++; @@ -110,6 +108,7 @@ extern int swap_on_off_main(int argc, char **argv) while (*++(*argv)) switch (**argv) { case 'a': + whine_if_fstab_is_missing(); do_em_all(); break; default: diff --git a/util-linux/umount.c b/util-linux/umount.c index a2ca8c7..b58b1a0 100644 --- a/util-linux/umount.c +++ b/util-linux/umount.c @@ -29,6 +29,7 @@ #include <fstab.h> #include <errno.h> + static const char umount_usage[] = "umount [flags] filesystem|directory\n\n" "Flags:\n" "\t-a:\tUnmount all file systems" @@ -57,7 +58,99 @@ static int umountAll = FALSE; static int doRemount = FALSE; extern const char mtab_file[]; /* Defined in utility.c */ -#define MIN(x,y) (x > y ? x : y) + +/* These functions are here because the getmntent functions do not appear + * to be re-entrant, which leads to all sorts of problems when we try to + * use them recursively - randolph + */ +void mtab_read(void) +{ + struct _mtab_entry_t *entry = NULL; + struct mntent *e; + FILE *fp; + + if (mtab_cache != NULL) + return; + + if ((fp = setmntent(mtab_file, "r")) == NULL) { + fprintf(stderr, "Cannot open %s\n", mtab_file); + return; + } + while ((e = getmntent(fp))) { + entry = malloc(sizeof(struct _mtab_entry_t)); + + entry->device = strdup(e->mnt_fsname); + entry->mountpt = strdup(e->mnt_dir); + entry->next = mtab_cache; + mtab_cache = entry; + } + endmntent(fp); +} + +char *mtab_getinfo(const char *match, const char which) +{ + struct _mtab_entry_t *cur = mtab_cache; + + while (cur) { + if (strcmp(cur->mountpt, match) == 0 || + strcmp(cur->device, match) == 0) { + if (which == MTAB_GETMOUNTPT) { + return cur->mountpt; + } else { +#if !defined BB_MTAB + if (strcmp(cur->device, "/dev/root") == 0) { + struct fstab *fstabItem; + + fstabItem = getfsfile("/"); + if (fstabItem != NULL) + return fstabItem->fs_spec; + } +#endif + return cur->device; + } + } + cur = cur->next; + } + return NULL; +} + +char *mtab_first(void **iter) +{ + struct _mtab_entry_t *mtab_iter; + + if (!iter) + return NULL; + mtab_iter = mtab_cache; + *iter = (void *) mtab_iter; + return mtab_next(iter); +} + +char *mtab_next(void **iter) +{ + char *mp; + + if (iter == NULL || *iter == NULL) + return NULL; + mp = ((struct _mtab_entry_t *) (*iter))->mountpt; + *iter = (void *) ((struct _mtab_entry_t *) (*iter))->next; + return mp; +} + +void mtab_free(void) +{ + struct _mtab_entry_t *this, *next; + + this = mtab_cache; + while (this) { + next = this->next; + if (this->device) + free(this->device); + if (this->mountpt) + free(this->mountpt); + free(this); + this = next; + } +} static int do_umount(const char *name, int useMtab) { @@ -105,6 +198,9 @@ static int umount_all(int useMtab) void *iter; for (mountpt = mtab_first(&iter); mountpt; mountpt = mtab_next(&iter)) { + /* Never umount /proc on a umount -a */ + if (strstr(mountpt, "proc")!= NULL) + continue; status = do_umount(mountpt, useMtab); if (status != 0) { /* Don't bother retrying the umount on busy devices */ @@ -163,97 +259,3 @@ extern int umount_main(int argc, char **argv) } } - - -/* These functions are here because the getmntent functions do not appear - * to be re-entrant, which leads to all sorts of problems when we try to - * use them recursively - randolph - */ -void mtab_read(void) -{ - struct _mtab_entry_t *entry = NULL; - struct mntent *e; - FILE *fp; - - if (mtab_cache != NULL) - return; - - if ((fp = setmntent(mtab_file, "r")) == NULL) { - fprintf(stderr, "Cannot open %s\n", mtab_file); - return; - } - while ((e = getmntent(fp))) { - entry = malloc(sizeof(struct _mtab_entry_t)); - - entry->device = strdup(e->mnt_fsname); - entry->mountpt = strdup(e->mnt_dir); - entry->next = mtab_cache; - mtab_cache = entry; - } - endmntent(fp); -} - -char *mtab_getinfo(const char *match, const char which) -{ - struct _mtab_entry_t *cur = mtab_cache; - - while (cur) { - if (strcmp(cur->mountpt, match) == 0 || - strcmp(cur->device, match) == 0) { - if (which == MTAB_GETMOUNTPT) { - return cur->mountpt; - } else { -#if !defined BB_MTAB - if (strcmp(cur->device, "/dev/root") == 0) { - struct fstab *fstabItem; - - fstabItem = getfsfile("/"); - if (fstabItem != NULL) - return fstabItem->fs_spec; - } -#endif - return cur->device; - } - } - cur = cur->next; - } - return NULL; -} - -char *mtab_first(void **iter) -{ - struct _mtab_entry_t *mtab_iter; - - if (!iter) - return NULL; - mtab_iter = mtab_cache; - *iter = (void *) mtab_iter; - return mtab_next(iter); -} - -char *mtab_next(void **iter) -{ - char *mp; - - if (iter == NULL || *iter == NULL) - return NULL; - mp = ((struct _mtab_entry_t *) (*iter))->mountpt; - *iter = (void *) ((struct _mtab_entry_t *) (*iter))->next; - return mp; -} - -void mtab_free(void) -{ - struct _mtab_entry_t *this, *next; - - this = mtab_cache; - while (this) { - next = this->next; - if (this->device) - free(this->device); - if (this->mountpt) - free(this->mountpt); - free(this); - this = next; - } -} @@ -1298,5 +1298,19 @@ extern char *find_unused_loop_device(void) } #endif /* BB_FEATURE_MOUNT_LOOP */ +#if defined BB_MTAB +#define whine_if_fstab_is_missing() {} +#else +extern void whine_if_fstab_is_missing() +{ + struct stat statBuf; + + if (stat("/etc/fstab", &statBuf) < 0) + fprintf(stderr, + "/etc/fstab file missing -- install one to name /dev/root.\n\n"); +} +#endif + + /* END CODE */ |