diff options
Diffstat (limited to 'gshadow/putsgent.c')
| -rw-r--r-- | gshadow/putsgent.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gshadow/putsgent.c b/gshadow/putsgent.c index 0b2cad6..c1cb921 100644 --- a/gshadow/putsgent.c +++ b/gshadow/putsgent.c @@ -15,9 +15,11 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ +#include <errno.h> #include <stdbool.h> #include <stdio.h> #include <gshadow.h> +#include <nss.h> #define _S(x) x ? x : "" @@ -29,6 +31,15 @@ putsgent (const struct sgrp *g, FILE *stream) { int errors = 0; + if (g->sg_namp == NULL || !__nss_valid_field (g->sg_namp) + || !__nss_valid_field (g->sg_passwd) + || !__nss_valid_list_field (g->sg_adm) + || !__nss_valid_list_field (g->sg_mem)) + { + __set_errno (EINVAL); + return -1; + } + _IO_flockfile (stream); if (fprintf (stream, "%s:%s:", g->sg_namp, _S (g->sg_passwd)) < 0) |