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configuration: added one more alias check to detect a circular configuration

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This commit is contained in:
Jaroslav Kysela 2006-09-28 16:42:19 +02:00
parent 1dc96732c2
commit 35b1df509f
1 changed files with 7 additions and 3 deletions
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10
src/conf.c
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@ -2405,7 +2405,7 @@ int snd_config_save(snd_config_t *config, snd_output_t *out)
{ \
snd_config_t *res = NULL; \
char *old_key; \
int err, first = 1; \
int err, first = 1, maxloop = 1000; \
assert(config && key); \
while (1) { \
old_key = strdup(key); \
@ -2424,14 +2424,18 @@ int snd_config_save(snd_config_t *config, snd_output_t *out)
} \
if (snd_config_get_string(res, &key) < 0) \
break; \
if (!first && strcmp(key, old_key) == 0) { \
SNDERR("key %s refers to itself"); \
if (!first && (strcmp(key, old_key) == 0 || maxloop <= 0)) { \
if (maxloop == 0) \
SNDERR("maximum loop count reached (circular configuration?)"); \
else \
SNDERR("key %s refers to itself", key); \
err = -EINVAL; \
res = NULL; \
break; \
} \
free(old_key); \
first = 0; \
maxloop--; \
} \
free(old_key); \
if (!res) \