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pcm_hw: fix possible memory leak (coverity)

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This commit is contained in:
Jaroslav Kysela 2016-01-12 16:07:16 +01:00
parent 822e781a47
commit 0f4f48d377
2 changed files with 21 additions and 17 deletions
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2
src/pcm/pcm.c
View file

@ -7512,7 +7512,7 @@ snd_pcm_chmap_query_t **snd_pcm_query_chmaps(snd_pcm_t *pcm)
*/ */
void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps) void snd_pcm_free_chmaps(snd_pcm_chmap_query_t **maps)
{ {
snd_pcm_chmap_query_t **p = maps; snd_pcm_chmap_query_t **p;
if (!maps) if (!maps)
return; return;
for (p = maps; *p; p++) for (p = maps; *p; p++)

36
src/pcm/pcm_hw.c
View file

@ -1693,12 +1693,14 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
err = snd_config_get_string(n, &str); err = snd_config_get_string(n, &str);
if (err < 0) { if (err < 0) {
SNDERR("Invalid type for %s", id); SNDERR("Invalid type for %s", id);
return -EINVAL; err = -EINVAL;
goto fail;
} }
card = snd_card_get_index(str); card = snd_card_get_index(str);
if (card < 0) { if (card < 0) {
SNDERR("Invalid value for %s", id); SNDERR("Invalid value for %s", id);
return card; err = card;
goto fail;
} }
} }
continue; continue;
@ -1707,7 +1709,7 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
err = snd_config_get_integer(n, &device); err = snd_config_get_integer(n, &device);
if (err < 0) { if (err < 0) {
SNDERR("Invalid type for %s", id); SNDERR("Invalid type for %s", id);
return err; goto fail;
} }
continue; continue;
} }
@ -1715,7 +1717,7 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
err = snd_config_get_integer(n, &subdevice); err = snd_config_get_integer(n, &subdevice);
if (err < 0) { if (err < 0) {
SNDERR("Invalid type for %s", id); SNDERR("Invalid type for %s", id);
return err; goto fail;
} }
continue; continue;
} }
@ -1738,7 +1740,7 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
err = snd_config_get_integer(n, &val); err = snd_config_get_integer(n, &val);
if (err < 0) { if (err < 0) {
SNDERR("Invalid type for %s", id); SNDERR("Invalid type for %s", id);
return err; goto fail;
} }
rate = val; rate = val;
continue; continue;
@ -1747,7 +1749,7 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
err = snd_config_get_string(n, &str); err = snd_config_get_string(n, &str);
if (err < 0) { if (err < 0) {
SNDERR("invalid type for %s", id); SNDERR("invalid type for %s", id);
return err; goto fail;
} }
format = snd_pcm_format_value(str); format = snd_pcm_format_value(str);
continue; continue;
@ -1757,7 +1759,7 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
err = snd_config_get_integer(n, &val); err = snd_config_get_integer(n, &val);
if (err < 0) { if (err < 0) {
SNDERR("Invalid type for %s", id); SNDERR("Invalid type for %s", id);
return err; goto fail;
} }
channels = val; channels = val;
continue; continue;
@ -1767,26 +1769,24 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
chmap = _snd_pcm_parse_config_chmaps(n); chmap = _snd_pcm_parse_config_chmaps(n);
if (!chmap) { if (!chmap) {
SNDERR("Invalid channel map for %s", id); SNDERR("Invalid channel map for %s", id);
return -EINVAL; goto fail;
} }
continue; continue;
} }
SNDERR("Unknown field %s", id); SNDERR("Unknown field %s", id);
snd_pcm_free_chmaps(chmap); err = -EINVAL;
return -EINVAL; goto fail;
} }
if (card < 0) { if (card < 0) {
SNDERR("card is not defined"); SNDERR("card is not defined");
snd_pcm_free_chmaps(chmap); err = -EINVAL;
return -EINVAL; goto fail;
} }
err = snd_pcm_hw_open(pcmp, name, card, device, subdevice, stream, err = snd_pcm_hw_open(pcmp, name, card, device, subdevice, stream,
mode | (nonblock ? SND_PCM_NONBLOCK : 0), mode | (nonblock ? SND_PCM_NONBLOCK : 0),
0, sync_ptr_ioctl); 0, sync_ptr_ioctl);
if (err < 0) { if (err < 0)
snd_pcm_free_chmaps(chmap); goto fail;
return err;
}
if (nonblock && ! (mode & SND_PCM_NONBLOCK)) { if (nonblock && ! (mode & SND_PCM_NONBLOCK)) {
/* revert to blocking mode for read/write access */ /* revert to blocking mode for read/write access */
snd_pcm_hw_nonblock(*pcmp, 0); snd_pcm_hw_nonblock(*pcmp, 0);
@ -1810,6 +1810,10 @@ int _snd_pcm_hw_open(snd_pcm_t **pcmp, const char *name,
hw->chmap_override = chmap; hw->chmap_override = chmap;
return 0; return 0;
fail:
snd_pcm_free_chmaps(chmap);
return err;
} }
#ifndef DOC_HIDDEN #ifndef DOC_HIDDEN