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service: when guessing the main PID don't consider processes that aren't our children

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This commit is contained in:
Lennart Poettering 2011-02-13 18:52:02 +01:00
parent 3185a36b05
commit 2633eb8317
1 changed files with 11 additions and 4 deletions
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15
src/cgroup.c
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@ -403,7 +403,7 @@ char *cgroup_bonding_to_string(CGroupBonding *b) {
pid_t cgroup_bonding_search_main_pid(CGroupBonding *b) {
FILE *f;
pid_t pid = 0, npid;
pid_t pid = 0, npid, mypid;
assert(b);
@ -413,15 +413,22 @@ pid_t cgroup_bonding_search_main_pid(CGroupBonding *b) {
if (cg_enumerate_processes(b->controller, b->path, &f) < 0)
return 0;
mypid = getpid();
while (cg_read_pid(f, &npid) > 0) {
pid_t ppid;
if (npid == pid)
continue;
/* Ignore processes that aren't our kids */
if (get_parent_of_pid(npid, &ppid) >= 0 && ppid != mypid)
continue;
if (pid != 0) {
/* Dang, there's more than one PID in this
* group, so we don't know what process is the
* main process. */
/* Dang, there's more than one daemonized PID
in this group, so we don't know what process
is the main process. */
pid = 0;
break;
}