diff options
Diffstat (limited to 'src/bus.c')
| -rw-r--r-- | src/bus.c | 62 |
1 files changed, 50 insertions, 12 deletions
@@ -87,6 +87,11 @@ #define BUS_SEMAPHORES 4 #endif +/** + * The default permission mits of the bus + */ +#define DEFAULT_MODE 0600 + /** @@ -130,7 +135,7 @@ * @return :int 0 on success, -1 on error */ #define open_semaphores(bus) \ - (((bus)->sem_id = semget((bus)->key_sem, BUS_SEMAPHORES, 0600)) == -1 ? -1 : 0) + (((bus)->sem_id = semget((bus)->key_sem, BUS_SEMAPHORES, 0)) == -1 ? -1 : 0) /** * Write a message to the shared memory @@ -194,7 +199,7 @@ create_semaphores(bus_t *bus) bus->key_sem = (key_t)r + 1; if (bus->key_sem == IPC_PRIVATE) continue; - id = semget(bus->key_sem, BUS_SEMAPHORES, IPC_CREAT | IPC_EXCL | 0600); + id = semget(bus->key_sem, BUS_SEMAPHORES, IPC_CREAT | IPC_EXCL | DEFAULT_MODE); if (id != -1) break; if ((errno != EEXIST) && (errno != EINTR)) @@ -245,7 +250,7 @@ create_shared_memory(bus_t *bus) bus->key_shm = (key_t)r + 1; if (bus->key_shm == IPC_PRIVATE) continue; - id = shmget(bus->key_shm, (size_t)BUS_MEMORY_SIZE, IPC_CREAT | IPC_EXCL | 0600); + id = shmget(bus->key_shm, (size_t)BUS_MEMORY_SIZE, IPC_CREAT | IPC_EXCL | DEFAULT_MODE); if (id != -1) break; if ((errno != EEXIST) && (errno != EINTR)) @@ -272,7 +277,7 @@ fail: static int remove_semaphores(const bus_t *bus) { - int id = semget(bus->key_sem, BUS_SEMAPHORES, 0600); + int id = semget(bus->key_sem, BUS_SEMAPHORES, 0); return ((id == -1) || (semctl(id, 0, IPC_RMID) == -1)) ? -1 : 0; } @@ -287,7 +292,7 @@ static int remove_shared_memory(const bus_t *bus) { struct shmid_ds _info; - int id = shmget(bus->key_shm, (size_t)BUS_MEMORY_SIZE, 0600); + int id = shmget(bus->key_shm, (size_t)BUS_MEMORY_SIZE, 0); return ((id == -1) || (shmctl(id, IPC_RMID, &_info) == -1)) ? -1 : 0; } @@ -341,7 +346,7 @@ open_shared_memory(bus_t *bus, int flags) { int id; void *address; - t(id = shmget(bus->key_shm, (size_t)BUS_MEMORY_SIZE, 0600)); + t(id = shmget(bus->key_shm, (size_t)BUS_MEMORY_SIZE, 0)); address = shmat(id, NULL, (flags & BUS_RDONLY) ? SHM_RDONLY : 0); if ((address == (void *)-1) || !address) goto fail; @@ -452,7 +457,7 @@ bus_create(const char *file, int flags, char **out_file) srand((unsigned int)time(NULL) + (unsigned int)rand()); if (file) { - fd = open(file, O_WRONLY | O_CREAT | O_EXCL, 0600); + fd = open(file, O_WRONLY | O_CREAT | O_EXCL, DEFAULT_MODE); if (fd == -1) { if ((errno != EEXIST) || (flags & BUS_EXCL)) return -1; @@ -475,7 +480,7 @@ bus_create(const char *file, int flags, char **out_file) retry: for (ptr = 0; ptr < 30; ptr++) genfile[len + ptr] = randomchar(); - fd = open(genfile, O_WRONLY | O_CREAT | O_EXCL, 0600); + fd = open(genfile, O_WRONLY | O_CREAT | O_EXCL, DEFAULT_MODE); if (fd == -1) { if (errno == EEXIST) goto retry; @@ -826,10 +831,27 @@ int bus_chown(const char *file, uid_t owner, gid_t group) { bus_t bus; + struct semid_ds sem_stat; + struct shmid_ds shm_stat; + int shm_id; + t(bus_open(&bus, file, -1)); t(chown(file, owner, group)); - /* TODO chown sem */ - /* TODO chown shm */ + + /* chown sem */ + t(open_semaphores(&bus)); + t(semctl(bus.sem_id, 0, IPC_STAT, &sem_stat)); + sem_stat.sem_perm.uid = owner; + sem_stat.sem_perm.gid = group; + t(semctl(bus.sem_id, 0, IPC_SET, &sem_stat)); + + /* chown shm */ + t(shm_id = shmget(bus.key_shm, (size_t)BUS_MEMORY_SIZE, 0)); + t(shmctl(shm_id, IPC_STAT, &shm_stat)); + shm_stat.shm_perm.uid = owner; + shm_stat.shm_perm.gid = group; + t(shmctl(shm_id, IPC_SET, &shm_stat)); + return 0; fail: return -1; @@ -852,15 +874,31 @@ bus_chmod(const char *file, mode_t mode) { bus_t bus; mode_t fmode; + struct semid_ds sem_stat; + struct shmid_ds shm_stat; + int shm_id; + mode = (mode & S_IRWXU) ? (mode | S_IRWXU) : (mode & ~S_IRWXU); mode = (mode & S_IRWXG) ? (mode | S_IRWXG) : (mode & ~S_IRWXG); mode = (mode & S_IRWXO) ? (mode | S_IRWXO) : (mode & ~S_IRWXO); mode &= (S_IWUSR | S_IWGRP | S_IWOTH | S_IRUSR | S_IRGRP | S_IROTH); fmode = mode & ~(S_IWGRP | S_IWOTH); + t(bus_open(&bus, file, -1)); t(chmod(file, fmode)); - /* TODO chmod sem */ - /* TODO chmod shm */ + + /* chmod sem */ + t(open_semaphores(&bus)); + t(semctl(bus.sem_id, 0, IPC_STAT, &sem_stat)); + sem_stat.sem_perm.mode = mode; + t(semctl(bus.sem_id, 0, IPC_SET, &sem_stat)); + + /* chmod shm */ + t(shm_id = shmget(bus.key_shm, (size_t)BUS_MEMORY_SIZE, 0)); + t(shmctl(shm_id, IPC_STAT, &shm_stat)); + shm_stat.shm_perm.mode = mode; + t(shmctl(shm_id, IPC_SET, &shm_stat)); + return 0; fail: return -1; |