- no obj-code changes. Fix indentation, use existing defines.
This commit is contained in:
Bernhard Reutner-Fischer
parent
1101d1c980
commit
ad2fa65fc0
139
init/init.c
139
init/init.c
@ -43,16 +43,6 @@
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#define SHUTDOWN 0x40
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#define RESTART 0x80
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/*
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#define STR_SYSINIT "\x01"
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#define STR_RESPAWN "\x02"
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#define STR_ASKFIRST "\x04"
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#define STR_WAIT "\x08"
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#define STR_ONCE "\x10"
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#define STR_CTRLALTDEL "\x20"
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#define STR_SHUTDOWN "\x40"
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#define STR_RESTART "\x80"
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*/
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/* Set up a linked list of init_actions, to be read from inittab */
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struct init_action {
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struct init_action *next;
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@ -142,7 +132,7 @@ static void message(int where, const char *fmt, ...)
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if (ENABLE_FEATURE_INIT_SYSLOG) {
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/* Log the message to syslogd */
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if (where & L_LOG) {
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/* don't out "\r" */
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/* don't print out "\r" */
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openlog(applet_name, 0, LOG_DAEMON);
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syslog(LOG_INFO, "init: %s", msg + 1);
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closelog();
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@ -156,7 +146,7 @@ static void message(int where, const char *fmt, ...)
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* It's mine, all mine! Muhahahaha! */
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if (log_fd < 0) {
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if (!log_console) {
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log_fd = 2;
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log_fd = STDERR_FILENO;
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} else {
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log_fd = device_open(log_console, O_WRONLY | O_NONBLOCK | O_NOCTTY);
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if (log_fd < 0) {
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@ -169,7 +159,7 @@ static void message(int where, const char *fmt, ...)
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}
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if (where & L_LOG) {
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full_write(log_fd, msg, l);
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if (log_fd == 2)
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if (log_fd == STDERR_FILENO)
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return; /* don't print dup messages */
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}
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}
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@ -210,13 +200,14 @@ static void console_init(void)
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char *s;
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s = getenv("CONSOLE");
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if (!s) s = getenv("console");
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if (!s)
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s = getenv("console");
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if (s) {
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int fd = open(s, O_RDWR | O_NONBLOCK | O_NOCTTY);
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if (fd >= 0) {
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dup2(fd, 0);
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dup2(fd, 1);
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xmove_fd(fd, 2);
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dup2(fd, STDIN_FILENO);
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dup2(fd, STDOUT_FILENO);
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xmove_fd(fd, STDERR_FILENO);
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}
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messageD(L_LOG, "console='%s'", s);
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} else {
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@ -255,7 +246,7 @@ static void set_sane_term(void)
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tty.c_cc[VSTOP] = 19; /* C-s */
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tty.c_cc[VSUSP] = 26; /* C-z */
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/* use line dicipline 0 */
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/* use line discipline 0 */
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tty.c_line = 0;
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/* Make it be sane */
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@ -282,7 +273,7 @@ static void open_stdio_to_tty(const char* tty_name, int exit_on_failure)
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/* empty tty_name means "use init's tty", else... */
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if (tty_name[0]) {
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int fd;
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close(0);
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close(STDIN_FILENO);
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/* fd can be only < 0 or 0: */
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fd = device_open(tty_name, O_RDWR);
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if (fd) {
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@ -292,12 +283,12 @@ static void open_stdio_to_tty(const char* tty_name, int exit_on_failure)
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_exit(EXIT_FAILURE);
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if (ENABLE_DEBUG_INIT)
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_exit(2);
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/* NB: we don't reach this if we were called after vfork.
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* Thus halt_reboot_pwoff() itself need not be vfork-safe. */
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/* NB: we don't reach this if we were called after vfork.
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* Thus halt_reboot_pwoff() itself need not be vfork-safe. */
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halt_reboot_pwoff(SIGUSR1); /* halt the system */
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}
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dup2(0, 1);
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dup2(0, 2);
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dup2(STDIN_FILENO, STDOUT_FILENO);
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dup2(STDIN_FILENO, STDERR_FILENO);
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}
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set_sane_term();
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}
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@ -346,8 +337,7 @@ static void init_exec(const char *command)
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ioctl(STDIN_FILENO, TIOCSCTTY, 0 /*only try, don't steal*/);
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}
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BB_EXECVP(cmd[0] + dash, cmd);
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message(L_LOG | L_CONSOLE, "Cannot run '%s': %s",
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cmd[0], strerror(errno));
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message(L_LOG | L_CONSOLE, "Cannot run '%s': %s", cmd[0], strerror(errno));
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/* returns if execvp fails */
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}
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@ -434,7 +424,6 @@ static pid_t run(const struct init_action *a)
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waitfor(pid);
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_exit(EXIT_SUCCESS);
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}
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/* Child - fall though to actually execute things */
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}
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#endif
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@ -640,8 +629,7 @@ static void new_init_action(uint8_t action_type, const char *command, const char
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/* don't enter action if it's already in the list,
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* but do overwrite existing actions */
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if ((strcmp(a->command, command) == 0)
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&& (strcmp(a->terminal, cons) == 0)
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) {
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&& (strcmp(a->terminal, cons) == 0)) {
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a->action_type = action_type;
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return;
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}
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@ -687,95 +675,6 @@ static void delete_init_action(struct init_action *action)
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*/
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static void parse_inittab(void)
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{
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#if 0
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FILE *file;
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char buf[COMMAND_SIZE];
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if (ENABLE_FEATURE_USE_INITTAB)
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file = fopen(INITTAB, "r");
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else
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file = NULL;
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/* No inittab file -- set up some default behavior */
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if (file == NULL) {
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/* Reboot on Ctrl-Alt-Del */
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new_init_action(CTRLALTDEL, "reboot", "");
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/* Umount all filesystems on halt/reboot */
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new_init_action(SHUTDOWN, "umount -a -r", "");
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/* Swapoff on halt/reboot */
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if (ENABLE_SWAPONOFF)
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new_init_action(SHUTDOWN, "swapoff -a", "");
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/* Prepare to restart init when a QUIT is received */
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new_init_action(RESTART, "init", "");
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/* Askfirst shell on tty1-4 */
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new_init_action(ASKFIRST, bb_default_login_shell, "");
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new_init_action(ASKFIRST, bb_default_login_shell, VC_2);
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new_init_action(ASKFIRST, bb_default_login_shell, VC_3);
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new_init_action(ASKFIRST, bb_default_login_shell, VC_4);
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/* sysinit */
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new_init_action(SYSINIT, INIT_SCRIPT, "");
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return;
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}
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while (fgets(buf, COMMAND_SIZE, file) != NULL) {
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static const char actions[] =
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STR_SYSINIT "sysinit\0"
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STR_RESPAWN "respawn\0"
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STR_ASKFIRST "askfirst\0"
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STR_WAIT "wait\0"
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STR_ONCE "once\0"
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STR_CTRLALTDEL "ctrlaltdel\0"
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STR_SHUTDOWN "shutdown\0"
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STR_RESTART "restart\0"
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;
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char tmpConsole[CONSOLE_NAME_SIZE];
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char *id, *runlev, *action, *command;
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const char *a;
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/* Skip leading spaces */
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id = skip_whitespace(buf);
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/* Trim the trailing '\n' */
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*strchrnul(id, '\n') = '\0';
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/* Skip the line if it is a comment */
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if (*id == '#' || *id == '\0')
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continue;
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/* Line is: "id:runlevel_ignored:action:command" */
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runlev = strchr(id, ':');
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if (runlev == NULL /*|| runlev[1] == '\0' - not needed */)
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goto bad_entry;
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action = strchr(runlev + 1, ':');
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if (action == NULL /*|| action[1] == '\0' - not needed */)
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goto bad_entry;
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command = strchr(action + 1, ':');
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if (command == NULL || command[1] == '\0')
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goto bad_entry;
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*command = '\0'; /* action => ":action\0" now */
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for (a = actions; a[0]; a += strlen(a) + 1) {
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if (strcmp(a + 1, action + 1) == 0) {
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*runlev = '\0';
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if (*id != '\0') {
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if (strncmp(id, "/dev/", 5) == 0)
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id += 5;
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strcpy(tmpConsole, "/dev/");
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safe_strncpy(tmpConsole + 5, id,
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sizeof(tmpConsole) - 5);
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id = tmpConsole;
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}
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new_init_action((uint8_t)a[0], command + 1, id);
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goto next_line;
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}
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}
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*command = ':';
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/* Choke on an unknown action */
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bad_entry:
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message(L_LOG | L_CONSOLE, "Bad inittab entry: %s", id);
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next_line: ;
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}
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fclose(file);
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#else
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char *token[4];
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/* order must correspond to SYSINIT..RESTART constants */
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static const char actions[] ALIGN1 =
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@ -808,7 +707,7 @@ static void parse_inittab(void)
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/* optional_tty:ignored_runlevel:action:command
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* Delims are not to be collapsed and need exactly 4 tokens
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*/
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while (config_read(parser, token, 4, 0, "#:", PARSE_DONT_TRIM|PARSE_DONT_REDUCE|PARSE_LAST_IS_GREEDY)) {
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while (config_read(parser, token, 4, 0, "#:", PARSE_DONT_TRIM|PARSE_DONT_REDUCE|PARSE_LAST_IS_GREEDY)) {
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int action;
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char *tty = token[0];
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@ -828,10 +727,10 @@ static void parse_inittab(void)
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free(tty);
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continue;
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bad_entry:
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message(L_LOG | L_CONSOLE, "Bad inittab entry at line %d", parser->lineno);
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message(L_LOG | L_CONSOLE, "Bad inittab entry at line %d",
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parser->lineno);
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}
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config_close(parser);
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#endif
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}
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#if ENABLE_FEATURE_USE_INITTAB
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