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Shared memory cleanup when it was created locally

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Wolfgang Hommel
2019-08-13 19:48:29 +02:00
parent 7498c405ed
commit a70db9196a
1 changed files with 21 additions and 0 deletions
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21
src/libfaketime.c
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@@ -276,6 +276,8 @@ static void ftpl_init (void) __attribute__ ((constructor));
* =======================================================================
*/
static bool shmCreator = false;
static void ft_shm_create(void) {
char sem_name[256], shm_name[256];
int shm_fdN;
@@ -338,6 +340,24 @@ static void ft_shm_create(void) {
snprintf(shared_objsN, sizeof(shared_objsN), "%s %s", sem_name, shm_name);
setenv("FAKETIME_SHARED", shared_objsN, true);
sem_close(semN);
shmCreator = true;
}
static void ft_shm_destroy(void)
{
char sem_name[256], shm_name[256], *ft_shared_env = getenv("FAKETIME_SHARED");
if (ft_shared_env != NULL)
{
if (sscanf(ft_shared_env, "%255s %255s", sem_name, shm_name) < 2)
{
printf("Error parsing semaphore name and shared memory id from string: %s", ft_shared_env);
exit(1);
}
sem_unlink(sem_name);
sem_unlink(shm_name);
}
}
static void ft_shm_init (void)
@@ -401,6 +421,7 @@ static void ft_cleanup (void)
exit(-1);
}
#endif
if (shmCreator == true) ft_shm_destroy();
}