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Use real_getpid instead of getpid in ft_shm_create() under FAKE_PID

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This addresses part of the concerns raised in #297
This commit is contained in:
Daniel Kahn Gillmor
2021-02-25 10:38:48 -05:00
parent 9337bccfcb
commit 7f4e5c378a
1 changed files with 8 additions and 2 deletions
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10
src/libfaketime.c
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@@ -354,9 +354,15 @@ static void ft_shm_create(void) {
struct ft_shared_s *ft_sharedN;
char shared_objsN[513];
sem_t *shared_semT = NULL;
pid_t pid;
snprintf(sem_name, 255, "/faketime_sem_%ld", (long)getpid());
snprintf(shm_name, 255, "/faketime_shm_%ld", (long)getpid());
#ifdef FAKE_PID
pid = real_getpid();
#else
pid = getpid();
#endif
snprintf(sem_name, 255, "/faketime_sem_%ld", (long)pid);
snprintf(shm_name, 255, "/faketime_shm_%ld", (long)pid);
if (SEM_FAILED == (semN = sem_open(sem_name, O_CREAT|O_EXCL, S_IWUSR|S_IRUSR, 1)))
{ /* silently fail on platforms that do not support sem_open() */
return;