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authorGravatar Eric Andersen <andersen@codepoet.org>2004-03-13 08:33:10 +0000
committerGravatar Eric Andersen <andersen@codepoet.org>2004-03-13 08:33:10 +0000
commit63a1a7aaa520d84bcf37b7351e3923bd308ab8ea (patch)
treee64462d91b1b7edb0030cde420c4a7e2c8759264 /debianutils
parent55c704c119c871e25253d8dc3582f623d7d47708 (diff)
downloadbusybox-63a1a7aaa520d84bcf37b7351e3923bd308ab8ea.tar.gz
busybox-63a1a7aaa520d84bcf37b7351e3923bd308ab8ea.tar.bz2
Update docs for start_stop_daemon to match reality. Update
the reality a bit to better match debian behavior.
Diffstat (limited to 'debianutils')
-rw-r--r--debianutils/start_stop_daemon.c82
1 files changed, 53 insertions, 29 deletions
diff --git a/debianutils/start_stop_daemon.c b/debianutils/start_stop_daemon.c
index dfa33e1f9..6bc259fb3 100644
--- a/debianutils/start_stop_daemon.c
+++ b/debianutils/start_stop_daemon.c
@@ -23,21 +23,23 @@
static int signal_nr = 15;
static int user_id = -1;
+static int quiet = 0;
static char *userspec = NULL;
static char *cmdname = NULL;
static char *execname = NULL;
+static char *pidfile = NULL;
-typedef struct pid_list {
+struct pid_list {
struct pid_list *next;
- int pid;
-} pid_list;
+ pid_t pid;
+};
-static pid_list *found = NULL;
+static struct pid_list *found = NULL;
static inline void
-push(int pid)
+push(pid_t pid)
{
- pid_list *p;
+ struct pid_list *p;
p = xmalloc(sizeof(*p));
p->next = found;
@@ -46,21 +48,19 @@ push(int pid)
}
static int
-pid_is_exec(int pid, const char *exec)
+pid_is_exec(pid_t pid, const char *name)
{
- char buf[PATH_MAX];
- FILE *fp;
-
- sprintf(buf, "/proc/%d/cmdline", pid);
- fp = fopen(buf, "r");
- if (fp && fgets (buf, sizeof (buf), fp) ) {
- fclose(fp);
- if (strncmp (buf, exec, strlen(exec)) == 0)
- return 1;
- }
- return 0;
-}
+ char buf[32];
+ struct stat sb, exec_stat;
+ if (name && stat(name, &exec_stat))
+ bb_perror_msg_and_die("stat %s", name);
+
+ sprintf(buf, "/proc/%d/exe", pid);
+ if (stat(buf, &sb) != 0)
+ return 0;
+ return (sb.st_dev == exec_stat.st_dev && sb.st_ino == exec_stat.st_ino);
+}
static int
pid_is_user(int pid, int uid)
@@ -74,9 +74,8 @@ pid_is_user(int pid, int uid)
return (sb.st_uid == uid);
}
-
static int
-pid_is_cmd(int pid, const char *name)
+pid_is_cmd(pid_t pid, const char *name)
{
char buf[32];
FILE *f;
@@ -116,9 +115,24 @@ check(int pid)
}
+static void
+do_pidfile(const char *name)
+{
+ FILE *f;
+ pid_t pid;
+
+ f = fopen(name, "r");
+ if (f) {
+ if (fscanf(f, "%d", &pid) == 1)
+ check(pid);
+ fclose(f);
+ } else if (errno != ENOENT)
+ bb_perror_msg_and_die("open pidfile %s", name);
+
+}
static void
-do_procfs(void)
+do_procinit(void)
{
DIR *procdir;
struct dirent *entry;
@@ -145,9 +159,14 @@ static void
do_stop(void)
{
char what[1024];
- pid_list *p;
+ struct pid_list *p;
int killed = 0;
+ if (pidfile)
+ do_pidfile(pidfile);
+ else
+ do_procinit();
+
if (cmdname)
strcpy(what, cmdname);
else if (execname)
@@ -158,7 +177,8 @@ do_stop(void)
bb_error_msg_and_die ("internal error, please report");
if (!found) {
- printf("no %s found; none killed.\n", what);
+ if (!quiet)
+ printf("no %s found; none killed.\n", what);
return;
}
for (p = found; p; p = p->next) {
@@ -169,7 +189,7 @@ do_stop(void)
bb_perror_msg("warning: failed to kill %d:", p->pid);
}
}
- if (killed) {
+ if (!quiet && killed) {
printf("stopped %s (pid", what);
for (p = found; p; p = p->next)
if(p->pid < 0)
@@ -183,17 +203,20 @@ static const struct option ssd_long_options[] = {
{ "stop", 0, NULL, 'K' },
{ "start", 0, NULL, 'S' },
{ "background", 0, NULL, 'b' },
+ { "quiet", 0, NULL, 'q' },
{ "startas", 1, NULL, 'a' },
{ "name", 1, NULL, 'n' },
{ "signal", 1, NULL, 's' },
{ "user", 1, NULL, 'u' },
{ "exec", 1, NULL, 'x' },
+ { "pidfile", 1, NULL, 'p' },
{ 0, 0, 0, 0 }
};
#define SSD_CTX_STOP 1
#define SSD_CTX_START 2
#define SSD_OPT_BACKGROUND 4
+#define SSD_OPT_QUIET 8
int
start_stop_daemon_main(int argc, char **argv)
@@ -205,8 +228,8 @@ start_stop_daemon_main(int argc, char **argv)
bb_applet_long_options = ssd_long_options;
bb_opt_complementaly = "K~S:S~K";
- opt = bb_getopt_ulflags(argc, argv, "KSba:n:s:u:x:",
- &startas, &cmdname, &signame, &userspec, &execname);
+ opt = bb_getopt_ulflags(argc, argv, "KSbqa:n:s:u:x:p:",
+ &startas, &cmdname, &signame, &userspec, &execname, &pidfile);
/* Check one and only one context option was given */
if ((opt & 0x80000000UL) || (opt & (SSD_CTX_STOP | SSD_CTX_START)) == 0) {
@@ -232,7 +255,7 @@ start_stop_daemon_main(int argc, char **argv)
if (userspec && sscanf(userspec, "%d", &user_id) != 1)
user_id = my_getpwnam(userspec);
- do_procfs();
+ do_procinit();
if (opt & SSD_CTX_STOP) {
do_stop();
@@ -240,7 +263,8 @@ start_stop_daemon_main(int argc, char **argv)
}
if (found) {
- printf("%s already running.\n%d\n", execname ,found->pid);
+ if (!quiet)
+ printf("%s already running.\n%d\n", execname ,found->pid);
return EXIT_SUCCESS;
}
*--argv = startas;