diff options
| -rw-r--r-- | source3/lib/util_pw.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/source3/lib/util_pw.c b/source3/lib/util_pw.c index 9d075a05e8..e102f2ef81 100644 --- a/source3/lib/util_pw.c +++ b/source3/lib/util_pw.c @@ -52,10 +52,40 @@ void passwd_free (struct passwd **buf) SAFE_FREE(*buf); } +#define PWNAMCACHE_SIZE 4 +static struct passwd *pwnam_cache[PWNAMCACHE_SIZE]; +static BOOL pwnam_cache_initialized = False; + +static void init_pwnam_cache(void) +{ + int i; + + if (pwnam_cache_initialized) + return; + + for (i=0; i<PWNAMCACHE_SIZE; i++) + pwnam_cache[i] = NULL; + + pwnam_cache_initialized = True; + return; +} + struct passwd *getpwnam_alloc(const char *name) { + int i; + struct passwd *temp; + init_pwnam_cache(); + + for (i=0; i<PWNAMCACHE_SIZE; i++) { + if ((pwnam_cache[i] != NULL) && + (strcmp(name, pwnam_cache[i]->pw_name) == 0)) { + DEBUG(10, ("Got %s from pwnam_cache\n", name)); + return alloc_copy_passwd(pwnam_cache[i]); + } + } + temp = sys_getpwnam(name); if (!temp) { @@ -67,6 +97,19 @@ struct passwd *getpwnam_alloc(const char *name) return NULL; } + for (i=0; i<PWNAMCACHE_SIZE; i++) { + if (pwnam_cache[i] == NULL) + break; + } + + if (i == PWNAMCACHE_SIZE) + i = rand() % PWNAMCACHE_SIZE; + + if (pwnam_cache[i] != NULL) + passwd_free(&pwnam_cache[i]); + + pwnam_cache[i] = alloc_copy_passwd(temp); + return alloc_copy_passwd(temp); } |