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More strict permission for IPC shm and sem

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Use more strict permission for IPC shm and sem, too.
The permission follows to the value of ipc_perm config option, as
default 0600.
This commit is contained in:
Takashi Iwai 2005-05-19 14:36:04 +00:00
parent 13c7364997
commit 4e1723f9a5
2 changed files with 8 additions and 5 deletions
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8
src/pcm/pcm_direct.c
View file

@ -57,7 +57,8 @@
int snd_pcm_direct_semaphore_create_or_connect(snd_pcm_direct_t *dmix) int snd_pcm_direct_semaphore_create_or_connect(snd_pcm_direct_t *dmix)
{ {
dmix->semid = semget(dmix->ipc_key, DIRECT_IPC_SEMS, IPC_CREAT | 0666); dmix->semid = semget(dmix->ipc_key, DIRECT_IPC_SEMS,
IPC_CREAT | dmix->ipc_perm);
if (dmix->semid < 0) if (dmix->semid < 0)
return -errno; return -errno;
return 0; return 0;
@ -104,11 +105,12 @@ int snd_pcm_direct_shm_create_or_connect(snd_pcm_direct_t *dmix)
int tmpid, err; int tmpid, err;
retryget: retryget:
dmix->shmid = shmget(dmix->ipc_key, sizeof(snd_pcm_direct_share_t), IPC_CREAT | 0666); dmix->shmid = shmget(dmix->ipc_key, sizeof(snd_pcm_direct_share_t),
IPC_CREAT | dmix->ipc_perm);
err = -errno; err = -errno;
if (dmix->shmid < 0){ if (dmix->shmid < 0){
if (errno == EINVAL) if (errno == EINVAL)
if ((tmpid = shmget(dmix->ipc_key, 0, 0666)) != -1) if ((tmpid = shmget(dmix->ipc_key, 0, dmix->ipc_perm)) != -1)
if (!shmctl(tmpid, IPC_STAT, &buf)) if (!shmctl(tmpid, IPC_STAT, &buf))
if (!buf.shm_nattch) if (!buf.shm_nattch)
/* no users so destroy the segment */ /* no users so destroy the segment */

5
src/pcm/pcm_dmix.c
View file

@ -71,11 +71,12 @@ static int shm_sum_create_or_connect(snd_pcm_direct_t *dmix)
dmix->shmptr->s.buffer_size * dmix->shmptr->s.buffer_size *
sizeof(signed int); sizeof(signed int);
retryshm: retryshm:
dmix->u.dmix.shmid_sum = shmget(dmix->ipc_key + 1, size, IPC_CREAT | 0666); dmix->u.dmix.shmid_sum = shmget(dmix->ipc_key + 1, size,
IPC_CREAT | dmix->ipc_perm);
err = -errno; err = -errno;
if (dmix->u.dmix.shmid_sum < 0){ if (dmix->u.dmix.shmid_sum < 0){
if (errno == EINVAL) if (errno == EINVAL)
if ((tmpid = shmget(dmix->ipc_key + 1, 0, 0666)) != -1) if ((tmpid = shmget(dmix->ipc_key + 1, 0, dmix->ipc_perm)) != -1)
if (!shmctl(tmpid, IPC_STAT, &buf)) if (!shmctl(tmpid, IPC_STAT, &buf))
if (!buf.shm_nattch) if (!buf.shm_nattch)
/* no users so destroy the segment */ /* no users so destroy the segment */