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privops: wait for helper pid

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Save the pid of the helper process and replace wait() with waitpid().
This commit is contained in:
Miroslav Lichvar
2015-12-08 16:09:02 +01:00
parent 1b8ee3259e
commit aa9a4c697c
1 changed files with 3 additions and 1 deletions
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4
privops.c
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@@ -92,6 +92,7 @@ typedef struct {
} PrvResponse; } PrvResponse;
static int helper_fd = -1; static int helper_fd = -1;
static pid_t helper_pid;
static int static int
have_helper(void) have_helper(void)
@@ -381,7 +382,7 @@ stop_helper(void)
req.op = op_QUIT; req.op = op_QUIT;
send_request(&req); send_request(&req);
wait(&status); waitpid(helper_pid, &status, 0);
} }
/* ======================================================================= */ /* ======================================================================= */
@@ -518,6 +519,7 @@ PRV_Initialise(void)
/* parent process */ /* parent process */
close(sock_pair[1]); close(sock_pair[1]);
helper_fd = sock_pair[0]; helper_fd = sock_pair[0];
helper_pid = pid;
/* stop the helper even when not exiting cleanly from the main function */ /* stop the helper even when not exiting cleanly from the main function */
atexit(stop_helper); atexit(stop_helper);