mirror of
https://git.busybox.net/busybox.git
synced 2024-11-23 21:53:25 +08:00
Fixed the init problem where it wouldn't unmount filesystems
on reboot. Also fixed swapoff -a so it works. -Erik
This commit is contained in:
Erik Andersen
parent
e49d5ecbbe
commit
e132f4b09e
@ -84,6 +84,8 @@
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- `fdflush', `length' and `printf' crashed when run without arguments
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- `fdflush' tried to flush itself using *argv
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- added "skip" and "seek" to dd.
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* swapoff -a was not working. Now it is.
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* init did not cleanly unmount filesystems on reboot. Now it does.
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-Erik Andersen
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2
Makefile
2
Makefile
@ -62,7 +62,7 @@ endif
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# -D_GNU_SOURCE is needed because environ is used in init.c
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ifeq ($(DODEBUG),true)
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CFLAGS += -Wall -g -D_GNU_SOURCE -DDEBUG_INIT
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CFLAGS += -Wall -g -D_GNU_SOURCE
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STRIP =
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LDFLAGS =
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else
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@ -59,7 +59,6 @@
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#define BB_MOUNT
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#define BB_NFSMOUNT
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//#define BB_MT
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//#define BB_MTAB
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#define BB_NSLOOKUP
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#define BB_PING
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#define BB_POWEROFF
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128
init.c
128
init.c
@ -22,6 +22,11 @@
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*
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*/
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/* Turn this on to disable all the dangerous
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rebooting stuff when debugging.
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#define DEBUG_INIT
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*/
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#include "internal.h"
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#include <stdio.h>
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#include <string.h>
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@ -78,7 +83,8 @@ typedef enum {
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RESPAWN,
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ASKFIRST,
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WAIT,
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ONCE
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ONCE,
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CTRLALTDEL
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} initActionEnum;
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/* And now a list of the actions we support in the version of init */
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@ -93,6 +99,7 @@ static const struct initActionType actions[] = {
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{"askfirst", ASKFIRST},
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{"wait", WAIT},
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{"once", ONCE},
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{"ctrlaltdel", CTRLALTDEL},
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{0}
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};
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@ -113,6 +120,7 @@ static char *log = VT_LOG;
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static int kernelVersion = 0;
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static char termType[32] = "TERM=ansi";
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static char console[32] = _PATH_CONSOLE;
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static void delete_initAction(initAction * action);
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/* print a message to the specified device:
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@ -131,8 +139,8 @@ void message(int device, char *fmt, ...)
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va_start(arguments, fmt);
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vsnprintf(msg, sizeof(msg), fmt, arguments);
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va_end(arguments);
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openlog("init", 0, LOG_DAEMON);
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syslog(LOG_DAEMON | LOG_NOTICE, msg);
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openlog("init", 0, LOG_USER);
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syslog(LOG_USER|LOG_INFO, msg);
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closelog();
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}
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#else
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@ -146,11 +154,12 @@ void message(int device, char *fmt, ...)
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log_fd = -2;
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/* log to main console instead */
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device = CONSOLE;
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} else if ((log_fd = device_open(log, O_RDWR | O_NDELAY)) < 0) {
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log_fd = -1;
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} else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
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log_fd = -2;
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fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
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fflush(stderr);
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return;
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log = NULL;
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device = CONSOLE;
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}
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}
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if ((device & LOG) && (log_fd >= 0)) {
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@ -303,10 +312,10 @@ static void console_init()
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/* check for serial console and disable logging to tty3 & running a
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* shell to tty2 */
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if (ioctl(0, TIOCGSERIAL, &sr) == 0) {
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message(LOG | CONSOLE,
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"serial console detected. Disabling virtual terminals.\r\n");
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log = NULL;
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secondConsole = NULL;
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message(LOG | CONSOLE,
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"serial console detected. Disabling virtual terminals.\r\n");
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}
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close(fd);
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}
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@ -319,6 +328,7 @@ static pid_t run(char *command, char *terminal, int get_enter)
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pid_t pid;
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char *tmpCmd;
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char *cmd[255];
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char buf[255];
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static const char press_enter[] =
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"\nPlease press Enter to activate this console. ";
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@ -333,7 +343,9 @@ static pid_t run(char *command, char *terminal, int get_enter)
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if ((pid = fork()) == 0) {
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#ifdef DEBUG_INIT
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pid_t shell_pgid = getpid();
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#endif
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/* Clean up */
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close(0);
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@ -369,30 +381,40 @@ static pid_t run(char *command, char *terminal, int get_enter)
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*/
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char c;
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#ifdef DEBUG_INIT
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message(LOG, "Waiting for enter to start '%s' (pid %d, console %s)\r\n",
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command, shell_pgid, terminal);
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#endif
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write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
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read(fileno(stdin), &c, 1);
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}
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/* Log the process name and args */
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message(LOG, "Starting pid %d, console %s: '",
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shell_pgid, terminal, command);
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/* Convert command (char*) into cmd (char**, one word per string) */
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for (tmpCmd = command, i = 0;
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(tmpCmd = strsep(&command, " \t")) != NULL;) {
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if (*tmpCmd != '\0') {
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cmd[i] = tmpCmd;
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#ifdef DEBUG_INIT
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message(LOG, "%s ", tmpCmd);
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/* Log the process name and args */
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message(LOG, "Starting pid %d, console %s: '%s'\r\n",
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shell_pgid, terminal, command);
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#endif
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tmpCmd++;
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i++;
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/* See if any special /bin/sh requiring characters are present */
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if (strpbrk(command, "~`!$^&*()=|\\{}[];\"'<>?") != NULL) {
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cmd[0] = SHELL;
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cmd[1] = "-c";
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strcpy(buf, "exec ");
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strncat(buf, command, sizeof(buf) - strlen(buf) - 1);
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cmd[2] = buf;
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cmd[3] = NULL;
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} else {
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/* Convert command (char*) into cmd (char**, one word per string) */
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for (tmpCmd = command, i = 0;
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(tmpCmd = strsep(&command, " \t")) != NULL;) {
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if (*tmpCmd != '\0') {
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cmd[i] = tmpCmd;
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tmpCmd++;
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i++;
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}
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}
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cmd[i] = NULL;
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}
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cmd[i] = NULL;
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message(LOG, "'\r\n");
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/* Now run it. The new program will take over this PID,
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* so nothing further in init.c should be run. */
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@ -413,9 +435,8 @@ static int waitfor(char *command, char *terminal, int get_enter)
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while (1) {
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wpid = wait(&status);
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if (wpid > 0) {
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message(LOG, "Process '%s' (pid %d) exited.\n", command, wpid);
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break;
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if (wpid > 0 && wpid != pid) {
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continue;
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}
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if (wpid == pid)
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break;
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@ -424,7 +445,7 @@ static int waitfor(char *command, char *terminal, int get_enter)
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}
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/* Make sure there is enough memory to do something useful. *
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* Calls swapon if needed so be sure /proc is mounted. */
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* Calls "swapon -a" if needed so be sure /etc/fstab is present... */
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static void check_memory()
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{
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struct stat statBuf;
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@ -434,7 +455,7 @@ static void check_memory()
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if (stat("/etc/fstab", &statBuf) == 0) {
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/* Try to turn on swap */
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waitfor("/bin/swapon swapon -a", log, FALSE);
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system("/sbin/swapon swapon -a");
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if (mem_total() < 3500)
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goto goodnight;
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} else
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@ -448,31 +469,45 @@ static void check_memory()
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sleep(1);
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}
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/* Run all commands to be run right before halt/reboot */
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static void run_lastAction(void)
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{
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initAction *a;
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for (a = initActionList; a; a = a->nextPtr) {
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if (a->action == CTRLALTDEL) {
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waitfor(a->process, a->console, FALSE);
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delete_initAction(a);
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}
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}
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}
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#ifndef DEBUG_INIT
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static void shutdown_system(void)
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{
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/* first disable our SIGHUP signal */
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signal(SIGHUP, SIG_DFL);
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/* Allow Ctrl-Alt-Del to reboot system. */
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reboot(RB_ENABLE_CAD);
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message(CONSOLE, "\r\nThe system is going down NOW !!\r\n");
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message(CONSOLE|LOG, "\r\nThe system is going down NOW !!\r\n");
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sync();
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/* Send signals to every process _except_ pid 1 */
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message(CONSOLE, "Sending SIGTERM to all processes.\r\n");
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message(CONSOLE|LOG, "Sending SIGTERM to all processes.\r\n");
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kill(-1, SIGTERM);
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sleep(5);
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sleep(1);
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sync();
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message(CONSOLE, "Sending SIGKILL to all processes.\r\n");
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message(CONSOLE|LOG, "Sending SIGKILL to all processes.\r\n");
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kill(-1, SIGKILL);
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sleep(5);
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sleep(1);
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/* run everything to be run at "ctrlaltdel" */
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run_lastAction();
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message(CONSOLE, "Disabling swap.\r\n");
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waitfor("swapoff -a", console, FALSE);
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message(CONSOLE, "Unmounting filesystems.\r\n");
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waitfor("umount -a -r", console, FALSE);
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sync();
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if (kernelVersion > 0 && kernelVersion <= 2 * 65536 + 2 * 256 + 11) {
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/* bdflush, kupdate not needed for kernels >2.2.11 */
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@ -484,14 +519,14 @@ static void shutdown_system(void)
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static void halt_signal(int sig)
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{
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shutdown_system();
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message(CONSOLE,
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message(CONSOLE|LOG,
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"The system is halted. Press %s or turn off power\r\n",
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(secondConsole == NULL) /* serial console */
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? "Reset" : "CTRL-ALT-DEL");
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sync();
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/* allow time for last message to reach serial console */
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sleep(5);
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sleep(2);
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#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,2,0)
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if (sig == SIGUSR2)
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@ -505,7 +540,7 @@ static void halt_signal(int sig)
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static void reboot_signal(int sig)
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{
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shutdown_system();
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message(CONSOLE, "Please stand by while rebooting the system.\r\n");
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message(CONSOLE|LOG, "Please stand by while rebooting the system.\r\n");
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sync();
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/* allow time for last message to reach serial console */
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@ -631,7 +666,7 @@ void new_initAction(initActionEnum action, char *process, char *cons)
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// newAction->process, newAction->action, newAction->console);
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}
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void delete_initAction(initAction * action)
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static void delete_initAction(initAction * action)
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{
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initAction *a, *b = NULL;
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@ -669,6 +704,10 @@ void parse_inittab(void)
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if (file == NULL) {
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/* No inittab file -- set up some default behavior */
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#endif
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/* Swapoff on halt/reboot */
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new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console);
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/* Umount all filesystems on halt/reboot */
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new_initAction(CTRLALTDEL, "/bin/umount -a -r > /dev/null 2>&1", console);
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/* Askfirst shell on tty1 */
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new_initAction(ASKFIRST, SHELL, console);
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/* Askfirst shell on tty2 */
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@ -756,6 +795,8 @@ void parse_inittab(void)
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#endif
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}
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extern int init_main(int argc, char **argv)
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{
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initAction *a;
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@ -768,9 +809,6 @@ extern int init_main(int argc, char **argv)
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usage("init\n\nInit is the parent of all processes.\n\n"
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"This version of init is designed to be run only by the kernel\n");
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}
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/* Fix up argv[0] to be certain we claim to be init */
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strncpy(argv[0], "init", strlen(argv[0]));
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/* Set up sig handlers -- be sure to
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* clear all of these in run() */
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signal(SIGUSR1, halt_signal);
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@ -838,6 +876,10 @@ extern int init_main(int argc, char **argv)
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* of "askfirst" shells */
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parse_inittab();
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}
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/* Fix up argv[0] to be certain we claim to be init */
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strncpy(argv[0], "init", strlen(argv[0])+1);
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strncpy(argv[1], "\0", strlen(argv[1])+1);
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/* Now run everything that needs to be run */
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128
init/init.c
128
init/init.c
@ -22,6 +22,11 @@
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*
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*/
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/* Turn this on to disable all the dangerous
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rebooting stuff when debugging.
|
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#define DEBUG_INIT
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*/
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|
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#include "internal.h"
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#include <stdio.h>
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#include <string.h>
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@ -78,7 +83,8 @@ typedef enum {
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RESPAWN,
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ASKFIRST,
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WAIT,
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ONCE
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ONCE,
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CTRLALTDEL
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} initActionEnum;
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/* And now a list of the actions we support in the version of init */
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@ -93,6 +99,7 @@ static const struct initActionType actions[] = {
|
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{"askfirst", ASKFIRST},
|
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{"wait", WAIT},
|
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{"once", ONCE},
|
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{"ctrlaltdel", CTRLALTDEL},
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{0}
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};
|
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|
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@ -113,6 +120,7 @@ static char *log = VT_LOG;
|
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static int kernelVersion = 0;
|
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static char termType[32] = "TERM=ansi";
|
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static char console[32] = _PATH_CONSOLE;
|
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static void delete_initAction(initAction * action);
|
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|
||||
|
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/* print a message to the specified device:
|
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@ -131,8 +139,8 @@ void message(int device, char *fmt, ...)
|
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va_start(arguments, fmt);
|
||||
vsnprintf(msg, sizeof(msg), fmt, arguments);
|
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va_end(arguments);
|
||||
openlog("init", 0, LOG_DAEMON);
|
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syslog(LOG_DAEMON | LOG_NOTICE, msg);
|
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openlog("init", 0, LOG_USER);
|
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syslog(LOG_USER|LOG_INFO, msg);
|
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closelog();
|
||||
}
|
||||
#else
|
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@ -146,11 +154,12 @@ void message(int device, char *fmt, ...)
|
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log_fd = -2;
|
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/* log to main console instead */
|
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device = CONSOLE;
|
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} else if ((log_fd = device_open(log, O_RDWR | O_NDELAY)) < 0) {
|
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log_fd = -1;
|
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} else if ((log_fd = device_open(log, O_RDWR|O_NDELAY)) < 0) {
|
||||
log_fd = -2;
|
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fprintf(stderr, "Bummer, can't write to log on %s!\r\n", log);
|
||||
fflush(stderr);
|
||||
return;
|
||||
log = NULL;
|
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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");
|
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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",
|
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command, shell_pgid, terminal);
|
||||
#endif
|
||||
write(fileno(stdout), press_enter, sizeof(press_enter) - 1);
|
||||
read(fileno(stdin), &c, 1);
|
||||
}
|
||||
|
||||
/* Log the process name and args */
|
||||
message(LOG, "Starting pid %d, console %s: '",
|
||||
shell_pgid, terminal, command);
|
||||
|
||||
/* Convert command (char*) into cmd (char**, one word per string) */
|
||||
for (tmpCmd = command, i = 0;
|
||||
(tmpCmd = strsep(&command, " \t")) != NULL;) {
|
||||
if (*tmpCmd != '\0') {
|
||||
cmd[i] = tmpCmd;
|
||||
#ifdef DEBUG_INIT
|
||||
message(LOG, "%s ", tmpCmd);
|
||||
/* Log the process name and args */
|
||||
message(LOG, "Starting pid %d, console %s: '%s'\r\n",
|
||||
shell_pgid, terminal, command);
|
||||
#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);
|
||||
|
||||
54
mount.c
54
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;
|
||||
}
|
||||
|
||||
23
swaponoff.c
23
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:
|
||||
|
||||
216
umount.c
216
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"
|
||||
@ -57,113 +58,6 @@ 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)
|
||||
|
||||
static int do_umount(const char *name, int useMtab)
|
||||
{
|
||||
int status;
|
||||
char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
|
||||
|
||||
if (blockDevice && strcmp(blockDevice, name) == 0)
|
||||
name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
|
||||
|
||||
status = umount(name);
|
||||
|
||||
#if defined BB_FEATURE_MOUNT_LOOP
|
||||
if (blockDevice != NULL && !strncmp("/dev/loop", blockDevice, 9))
|
||||
/* this was a loop device, delete it */
|
||||
del_loop(blockDevice);
|
||||
#endif
|
||||
#if defined BB_FEATURE_REMOUNT
|
||||
if (status != 0 && doRemount == TRUE && errno == EBUSY) {
|
||||
status = mount(blockDevice, name, NULL,
|
||||
MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
|
||||
if (status == 0) {
|
||||
fprintf(stderr, "umount: %s busy - remounted read-only\n",
|
||||
blockDevice);
|
||||
/* TODO: update mtab if BB_MTAB is defined */
|
||||
} else {
|
||||
fprintf(stderr, "umount: Cannot remount %s read-only\n",
|
||||
blockDevice);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
if (status == 0) {
|
||||
#if defined BB_MTAB
|
||||
if (useMtab == TRUE)
|
||||
erase_mtab(name);
|
||||
#endif
|
||||
return (TRUE);
|
||||
}
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
static int umount_all(int useMtab)
|
||||
{
|
||||
int status = TRUE;
|
||||
char *mountpt;
|
||||
void *iter;
|
||||
|
||||
for (mountpt = mtab_first(&iter); mountpt; mountpt = mtab_next(&iter)) {
|
||||
status = do_umount(mountpt, useMtab);
|
||||
if (status != 0) {
|
||||
/* Don't bother retrying the umount on busy devices */
|
||||
if (errno == EBUSY) {
|
||||
perror(mountpt);
|
||||
continue;
|
||||
}
|
||||
status = do_umount(mountpt, useMtab);
|
||||
if (status != 0) {
|
||||
printf("Couldn't umount %s on %s: %s\n",
|
||||
mountpt, mtab_getinfo(mountpt, MTAB_GETDEVICE),
|
||||
strerror(errno));
|
||||
}
|
||||
}
|
||||
}
|
||||
return (status);
|
||||
}
|
||||
|
||||
extern int umount_main(int argc, char **argv)
|
||||
{
|
||||
if (argc < 2) {
|
||||
usage(umount_usage);
|
||||
}
|
||||
|
||||
/* Parse any options */
|
||||
while (--argc > 0 && **(++argv) == '-') {
|
||||
while (*++(*argv))
|
||||
switch (**argv) {
|
||||
case 'a':
|
||||
umountAll = TRUE;
|
||||
break;
|
||||
#ifdef BB_MTAB
|
||||
case 'n':
|
||||
useMtab = FALSE;
|
||||
break;
|
||||
#endif
|
||||
#ifdef BB_FEATURE_REMOUNT
|
||||
case 'r':
|
||||
doRemount = TRUE;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
usage(umount_usage);
|
||||
}
|
||||
}
|
||||
|
||||
mtab_read();
|
||||
if (umountAll == TRUE) {
|
||||
exit(umount_all(useMtab));
|
||||
}
|
||||
if (do_umount(*argv, useMtab) == 0)
|
||||
exit(TRUE);
|
||||
else {
|
||||
perror("umount");
|
||||
exit(FALSE);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* 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
|
||||
@ -257,3 +151,111 @@ void mtab_free(void)
|
||||
this = next;
|
||||
}
|
||||
}
|
||||
|
||||
static int do_umount(const char *name, int useMtab)
|
||||
{
|
||||
int status;
|
||||
char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
|
||||
|
||||
if (blockDevice && strcmp(blockDevice, name) == 0)
|
||||
name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
|
||||
|
||||
status = umount(name);
|
||||
|
||||
#if defined BB_FEATURE_MOUNT_LOOP
|
||||
if (blockDevice != NULL && !strncmp("/dev/loop", blockDevice, 9))
|
||||
/* this was a loop device, delete it */
|
||||
del_loop(blockDevice);
|
||||
#endif
|
||||
#if defined BB_FEATURE_REMOUNT
|
||||
if (status != 0 && doRemount == TRUE && errno == EBUSY) {
|
||||
status = mount(blockDevice, name, NULL,
|
||||
MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
|
||||
if (status == 0) {
|
||||
fprintf(stderr, "umount: %s busy - remounted read-only\n",
|
||||
blockDevice);
|
||||
/* TODO: update mtab if BB_MTAB is defined */
|
||||
} else {
|
||||
fprintf(stderr, "umount: Cannot remount %s read-only\n",
|
||||
blockDevice);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
if (status == 0) {
|
||||
#if defined BB_MTAB
|
||||
if (useMtab == TRUE)
|
||||
erase_mtab(name);
|
||||
#endif
|
||||
return (TRUE);
|
||||
}
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
static int umount_all(int useMtab)
|
||||
{
|
||||
int status = TRUE;
|
||||
char *mountpt;
|
||||
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 */
|
||||
if (errno == EBUSY) {
|
||||
perror(mountpt);
|
||||
continue;
|
||||
}
|
||||
status = do_umount(mountpt, useMtab);
|
||||
if (status != 0) {
|
||||
printf("Couldn't umount %s on %s: %s\n",
|
||||
mountpt, mtab_getinfo(mountpt, MTAB_GETDEVICE),
|
||||
strerror(errno));
|
||||
}
|
||||
}
|
||||
}
|
||||
return (status);
|
||||
}
|
||||
|
||||
extern int umount_main(int argc, char **argv)
|
||||
{
|
||||
if (argc < 2) {
|
||||
usage(umount_usage);
|
||||
}
|
||||
|
||||
/* Parse any options */
|
||||
while (--argc > 0 && **(++argv) == '-') {
|
||||
while (*++(*argv))
|
||||
switch (**argv) {
|
||||
case 'a':
|
||||
umountAll = TRUE;
|
||||
break;
|
||||
#ifdef BB_MTAB
|
||||
case 'n':
|
||||
useMtab = FALSE;
|
||||
break;
|
||||
#endif
|
||||
#ifdef BB_FEATURE_REMOUNT
|
||||
case 'r':
|
||||
doRemount = TRUE;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
usage(umount_usage);
|
||||
}
|
||||
}
|
||||
|
||||
mtab_read();
|
||||
if (umountAll == TRUE) {
|
||||
exit(umount_all(useMtab));
|
||||
}
|
||||
if (do_umount(*argv, useMtab) == 0)
|
||||
exit(TRUE);
|
||||
else {
|
||||
perror("umount");
|
||||
exit(FALSE);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -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;
|
||||
}
|
||||
|
||||
@ -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"
|
||||
@ -57,113 +58,6 @@ 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)
|
||||
|
||||
static int do_umount(const char *name, int useMtab)
|
||||
{
|
||||
int status;
|
||||
char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
|
||||
|
||||
if (blockDevice && strcmp(blockDevice, name) == 0)
|
||||
name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
|
||||
|
||||
status = umount(name);
|
||||
|
||||
#if defined BB_FEATURE_MOUNT_LOOP
|
||||
if (blockDevice != NULL && !strncmp("/dev/loop", blockDevice, 9))
|
||||
/* this was a loop device, delete it */
|
||||
del_loop(blockDevice);
|
||||
#endif
|
||||
#if defined BB_FEATURE_REMOUNT
|
||||
if (status != 0 && doRemount == TRUE && errno == EBUSY) {
|
||||
status = mount(blockDevice, name, NULL,
|
||||
MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
|
||||
if (status == 0) {
|
||||
fprintf(stderr, "umount: %s busy - remounted read-only\n",
|
||||
blockDevice);
|
||||
/* TODO: update mtab if BB_MTAB is defined */
|
||||
} else {
|
||||
fprintf(stderr, "umount: Cannot remount %s read-only\n",
|
||||
blockDevice);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
if (status == 0) {
|
||||
#if defined BB_MTAB
|
||||
if (useMtab == TRUE)
|
||||
erase_mtab(name);
|
||||
#endif
|
||||
return (TRUE);
|
||||
}
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
static int umount_all(int useMtab)
|
||||
{
|
||||
int status = TRUE;
|
||||
char *mountpt;
|
||||
void *iter;
|
||||
|
||||
for (mountpt = mtab_first(&iter); mountpt; mountpt = mtab_next(&iter)) {
|
||||
status = do_umount(mountpt, useMtab);
|
||||
if (status != 0) {
|
||||
/* Don't bother retrying the umount on busy devices */
|
||||
if (errno == EBUSY) {
|
||||
perror(mountpt);
|
||||
continue;
|
||||
}
|
||||
status = do_umount(mountpt, useMtab);
|
||||
if (status != 0) {
|
||||
printf("Couldn't umount %s on %s: %s\n",
|
||||
mountpt, mtab_getinfo(mountpt, MTAB_GETDEVICE),
|
||||
strerror(errno));
|
||||
}
|
||||
}
|
||||
}
|
||||
return (status);
|
||||
}
|
||||
|
||||
extern int umount_main(int argc, char **argv)
|
||||
{
|
||||
if (argc < 2) {
|
||||
usage(umount_usage);
|
||||
}
|
||||
|
||||
/* Parse any options */
|
||||
while (--argc > 0 && **(++argv) == '-') {
|
||||
while (*++(*argv))
|
||||
switch (**argv) {
|
||||
case 'a':
|
||||
umountAll = TRUE;
|
||||
break;
|
||||
#ifdef BB_MTAB
|
||||
case 'n':
|
||||
useMtab = FALSE;
|
||||
break;
|
||||
#endif
|
||||
#ifdef BB_FEATURE_REMOUNT
|
||||
case 'r':
|
||||
doRemount = TRUE;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
usage(umount_usage);
|
||||
}
|
||||
}
|
||||
|
||||
mtab_read();
|
||||
if (umountAll == TRUE) {
|
||||
exit(umount_all(useMtab));
|
||||
}
|
||||
if (do_umount(*argv, useMtab) == 0)
|
||||
exit(TRUE);
|
||||
else {
|
||||
perror("umount");
|
||||
exit(FALSE);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* 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
|
||||
@ -257,3 +151,111 @@ void mtab_free(void)
|
||||
this = next;
|
||||
}
|
||||
}
|
||||
|
||||
static int do_umount(const char *name, int useMtab)
|
||||
{
|
||||
int status;
|
||||
char *blockDevice = mtab_getinfo(name, MTAB_GETDEVICE);
|
||||
|
||||
if (blockDevice && strcmp(blockDevice, name) == 0)
|
||||
name = mtab_getinfo(blockDevice, MTAB_GETMOUNTPT);
|
||||
|
||||
status = umount(name);
|
||||
|
||||
#if defined BB_FEATURE_MOUNT_LOOP
|
||||
if (blockDevice != NULL && !strncmp("/dev/loop", blockDevice, 9))
|
||||
/* this was a loop device, delete it */
|
||||
del_loop(blockDevice);
|
||||
#endif
|
||||
#if defined BB_FEATURE_REMOUNT
|
||||
if (status != 0 && doRemount == TRUE && errno == EBUSY) {
|
||||
status = mount(blockDevice, name, NULL,
|
||||
MS_MGC_VAL | MS_REMOUNT | MS_RDONLY, NULL);
|
||||
if (status == 0) {
|
||||
fprintf(stderr, "umount: %s busy - remounted read-only\n",
|
||||
blockDevice);
|
||||
/* TODO: update mtab if BB_MTAB is defined */
|
||||
} else {
|
||||
fprintf(stderr, "umount: Cannot remount %s read-only\n",
|
||||
blockDevice);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
if (status == 0) {
|
||||
#if defined BB_MTAB
|
||||
if (useMtab == TRUE)
|
||||
erase_mtab(name);
|
||||
#endif
|
||||
return (TRUE);
|
||||
}
|
||||
return (FALSE);
|
||||
}
|
||||
|
||||
static int umount_all(int useMtab)
|
||||
{
|
||||
int status = TRUE;
|
||||
char *mountpt;
|
||||
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 */
|
||||
if (errno == EBUSY) {
|
||||
perror(mountpt);
|
||||
continue;
|
||||
}
|
||||
status = do_umount(mountpt, useMtab);
|
||||
if (status != 0) {
|
||||
printf("Couldn't umount %s on %s: %s\n",
|
||||
mountpt, mtab_getinfo(mountpt, MTAB_GETDEVICE),
|
||||
strerror(errno));
|
||||
}
|
||||
}
|
||||
}
|
||||
return (status);
|
||||
}
|
||||
|
||||
extern int umount_main(int argc, char **argv)
|
||||
{
|
||||
if (argc < 2) {
|
||||
usage(umount_usage);
|
||||
}
|
||||
|
||||
/* Parse any options */
|
||||
while (--argc > 0 && **(++argv) == '-') {
|
||||
while (*++(*argv))
|
||||
switch (**argv) {
|
||||
case 'a':
|
||||
umountAll = TRUE;
|
||||
break;
|
||||
#ifdef BB_MTAB
|
||||
case 'n':
|
||||
useMtab = FALSE;
|
||||
break;
|
||||
#endif
|
||||
#ifdef BB_FEATURE_REMOUNT
|
||||
case 'r':
|
||||
doRemount = TRUE;
|
||||
break;
|
||||
#endif
|
||||
default:
|
||||
usage(umount_usage);
|
||||
}
|
||||
}
|
||||
|
||||
mtab_read();
|
||||
if (umountAll == TRUE) {
|
||||
exit(umount_all(useMtab));
|
||||
}
|
||||
if (do_umount(*argv, useMtab) == 0)
|
||||
exit(TRUE);
|
||||
else {
|
||||
perror("umount");
|
||||
exit(FALSE);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
14
utility.c
14
utility.c
@ -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 */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user