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device_mapper: optimize dm_pool_strndup

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This commit is contained in:
Zdenek Kabelac 2018-12-01 00:34:29 +01:00
parent c61c4271a4
commit 93dfb5dd3e
1 changed files with 4 additions and 2 deletions
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6
device_mapper/mm/pool.c
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@ -59,11 +59,13 @@ char *dm_pool_strdup(struct dm_pool *p, const char *str)
char *dm_pool_strndup(struct dm_pool *p, const char *str, size_t n) char *dm_pool_strndup(struct dm_pool *p, const char *str, size_t n)
{ {
size_t slen = strlen(str);
size_t len = (slen < n) ? slen : n;
char *ret = dm_pool_alloc(p, n + 1); char *ret = dm_pool_alloc(p, n + 1);
if (ret) { if (ret) {
strncpy(ret, str, n); ret[len] = '\0';
ret[n] = '\0'; memcpy(ret, str, len);
} }
return ret; return ret;