diff options
Diffstat (limited to 'libc/pwd_grp/getgrgid.c')
| -rw-r--r-- | libc/pwd_grp/getgrgid.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/libc/pwd_grp/getgrgid.c b/libc/pwd_grp/getgrgid.c index dc9176d39..5efca964a 100644 --- a/libc/pwd_grp/getgrgid.c +++ b/libc/pwd_grp/getgrgid.c @@ -24,6 +24,20 @@ #include <paths.h> #include "config.h" + +#ifdef __UCLIBC_HAS_THREADS__ +#include <pthread.h> +static pthread_mutex_t mylock = PTHREAD_MUTEX_INITIALIZER; +# define LOCK pthread_mutex_lock(&mylock) +# define UNLOCK pthread_mutex_unlock(&mylock); +#else +# define LOCK +# define UNLOCK +#endif +static char *line_buff = NULL; +static char **members = NULL; + + struct group *getgrgid(const gid_t gid) { struct group *group; @@ -32,13 +46,16 @@ struct group *getgrgid(const gid_t gid) if ((grp_fd = open(_PATH_GROUP, O_RDONLY)) < 0) return NULL; - while ((group = __getgrent(grp_fd)) != NULL) + LOCK; + while ((group = __getgrent(grp_fd, line_buff, members)) != NULL) if (group->gr_gid == gid) { close(grp_fd); + UNLOCK; return group; } close(grp_fd); + UNLOCK; return NULL; } |