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| author | dimitri staessens <dimitri.staessens@intec.ugent.be> | 2016-05-22 20:45:41 +0200 |
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| committer | dimitri staessens <dimitri.staessens@intec.ugent.be> | 2016-05-22 20:45:41 +0200 |
| commit | 9544da4a44f40f8c90b56b816a28fc6ac566d85d (patch) | |
| tree | 37ebb2d5c4d5a266f6e298fc7960aa609c07bc0e | |
| parent | 467e504993c1cb0351dc3e279e7aeab8e5df333f (diff) | |
| download | ouroboros-9544da4a44f40f8c90b56b816a28fc6ac566d85d.tar.gz ouroboros-9544da4a44f40f8c90b56b816a28fc6ac566d85d.zip | |
irmd: use the shm_du_map as a uniqueness check
This makes sure only one shm_du_map is running in the system.
Starting a second irmd would invalidate the shared memory map.
| -rw-r--r-- | src/irmd/main.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/irmd/main.c b/src/irmd/main.c index a33fae84..b84c3327 100644 --- a/src/irmd/main.c +++ b/src/irmd/main.c @@ -1487,8 +1487,13 @@ static struct irm * irm_create() if (i == NULL) return NULL; - if (access("/dev/shm/" SHM_DU_MAP_FILENAME, F_OK) != -1) - unlink("/dev/shm/" SHM_DU_MAP_FILENAME); + if (access("/dev/shm/" SHM_DU_MAP_FILENAME, F_OK) != -1) { + LOG_ERR("IRM daemon is running in this system."); + LOG_ERR("If you think this message is in error,"); + LOG_ERR("please remove /dev/shm/" SHM_DU_MAP_FILENAME); + LOG_ERR("(root privileges required) or reboot your system."); + return NULL; + } i->threadpool = malloc(sizeof(pthread_t) * IRMD_THREADPOOL_SIZE); if (i->threadpool == NULL) { |