diff options
| -rw-r--r-- | init/init.c | 39 |
1 files changed, 14 insertions, 25 deletions
diff --git a/init/init.c b/init/init.c index 10cb015..9cbe818 100644 --- a/init/init.c +++ b/init/init.c @@ -174,7 +174,7 @@ static const char * const environment[] = { /* Function prototypes */ static void delete_init_action(struct init_action *a); -static int waitfor(const struct init_action *a); +static int waitfor(const struct init_action *a, pid_t pid); static void halt_signal(int sig); @@ -200,14 +200,14 @@ static void message(int device, const char *fmt, ...) { va_list arguments; int l; - char msg[1024]; + RESERVE_CONFIG_BUFFER(msg, 1024); #ifndef CONFIG_SYSLOGD static int log_fd = -1; #endif msg[0] = '\r'; va_start(arguments, fmt); - l = vsnprintf(msg + 1, sizeof(msg) - 2, fmt, arguments) + 1; + l = vsnprintf(msg + 1, 1024 - 2, fmt, arguments) + 1; va_end(arguments); #ifdef CONFIG_SYSLOGD @@ -258,6 +258,7 @@ static void message(int device, const char *fmt, ...) #endif } } + RELEASE_CONFIG_BUFFER(msg); } /* Set terminal settings to reasonable defaults */ @@ -400,7 +401,7 @@ static void open_new_terminal(const char *device, char fail) { static pid_t run(const struct init_action *a) { - int i, junk; + int i; pid_t pid; char *s, *tmpCmd, *cmd[INIT_BUFFS_SIZE], *cmdpath; char buf[INIT_BUFFS_SIZE + 6]; /* INIT_BUFFS_SIZE+strlen("exec ")+1 */ @@ -452,7 +453,6 @@ static pid_t run(const struct init_action *a) /* If the init Action requires us to wait, then force the * supplied terminal to be the controlling tty. */ if (a->action & (SYSINIT | WAIT | CTRLALTDEL | SHUTDOWN | RESTART)) { - pid_t pgrp, tmp_pid; /* Now fork off another process to just hang around */ if ((pid = fork()) < 0) { @@ -468,17 +468,9 @@ static pid_t run(const struct init_action *a) signal(SIGQUIT, SIG_IGN); signal(SIGCHLD, SIG_DFL); - /* Wait for child to exit */ - while ((tmp_pid = waitpid(pid, &junk, 0)) != pid) { - if (tmp_pid == -1 && errno == ECHILD) { - break; - } - /* FIXME handle other errors */ - } - + waitfor(NULL, pid); /* See if stealing the controlling tty back is necessary */ - pgrp = tcgetpgrp(0); - if (pgrp != getpid()) + if (tcgetpgrp(0) != getpid()) _exit(0); /* Use a temporary process to steal the controlling tty. */ @@ -491,10 +483,7 @@ static pid_t run(const struct init_action *a) ioctl(0, TIOCSCTTY, 1); _exit(0); } - while ((tmp_pid = waitpid(pid, &junk, 0)) != pid) { - if (tmp_pid < 0 && errno == ECHILD) - break; - } + waitfor(NULL, pid); _exit(0); } @@ -603,15 +592,15 @@ static pid_t run(const struct init_action *a) return pid; } -static int waitfor(const struct init_action *a) +static int waitfor(const struct init_action *a, pid_t pid) { - int pid; + int runpid; int status, wpid; - pid = run(a); + runpid = (NULL == a)? pid : run(a); while (1) { - wpid = waitpid(pid,&status,0); - if (wpid == pid) + wpid = waitpid(runpid,&status,0); + if (wpid == runpid) break; if (wpid == -1 && errno == ECHILD) { /* we missed its termination */ @@ -634,7 +623,7 @@ static void run_actions(int action) if (access(a->terminal, R_OK | W_OK)) { delete_init_action(a); } else if (a->action & (SYSINIT | WAIT | CTRLALTDEL | SHUTDOWN | RESTART)) { - waitfor(a); + waitfor(a, 0); delete_init_action(a); } else if (a->action & ONCE) { run(a); |