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main: set PR_SET_CHILD_REAPER for MANAGER_USER

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Become the reaper for all children part of the user session. Tested
with several forking services.
This commit is contained in:
Auke Kok 2012-07-25 00:13:11 +02:00 committed by Kay Sievers
parent 578ac0604e
commit d4447f4d95
2 changed files with 13 additions and 0 deletions
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9
src/core/main.c
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@ -1500,6 +1500,15 @@ int main(int argc, char *argv[]) {
}
}
if (arg_running_as == MANAGER_USER) {
/* Become reaper of our children */
r = prctl(PR_SET_CHILD_SUBREAPER, 1);
if (r < 0)
log_error("Failed to prctl(PR_SET_CHILD_SUBREAPER): %s", strerror(-r));
if (r == -EINVAL)
log_error("Perhaps the kernel version is too old (< 3.4?)");
}
r = manager_new(arg_running_as, &m);
if (r < 0) {
log_error("Failed to allocate manager object: %s", strerror(-r));

4
src/shared/missing.h
View File

@ -190,3 +190,7 @@ static inline pid_t gettid(void) {
#ifndef PR_SET_NO_NEW_PRIVS
#define PR_SET_NO_NEW_PRIVS 38
#endif
#ifndef PR_SET_CHILD_SUBREAPER
#define PR_SET_CHILD_SUBREAPER 36
#endif