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wait_on_damonized-start: wait only on the pid we want

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Otherwise we can reap another thread's forked pid.

Changelog: Per Dwight's suggestion, use pid_t for argument.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Dwight Engen <dwight.engen@oracle.com>
Acked-by: S.Çağlar Onur <caglar@10ur.org>
This commit is contained in:
Serge Hallyn 2013-11-08 17:41:16 +00:00
parent 2d834aa807
commit 03f064ff74
1 changed files with 3 additions and 3 deletions
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6
src/lxc/lxccontainer.c
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@ -491,7 +491,7 @@ static bool lxcapi_wait(struct lxc_container *c, const char *state, int timeout)
}
static bool wait_on_daemonized_start(struct lxc_container *c)
static bool wait_on_daemonized_start(struct lxc_container *c, int pid)
{
/* we'll probably want to make this timeout configurable? */
int timeout = 5, ret, status;
@ -500,7 +500,7 @@ static bool wait_on_daemonized_start(struct lxc_container *c)
* our child is going to fork again, then exit. reap the
* child
*/
ret = wait(&status);
ret = waitpid(pid, &status, 0);
if (ret == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 0)
DEBUG("failed waiting for first dual-fork child");
return lxcapi_wait(c, "RUNNING", timeout);
@ -607,7 +607,7 @@ static bool lxcapi_start(struct lxc_container *c, int useinit, char * const argv
return false;
}
if (pid != 0)
return wait_on_daemonized_start(c);
return wait_on_daemonized_start(c, pid);
process_unlock(); // we're no longer sharing
/* second fork to be reparented by init */