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-rw-r--r--nss/putsgent.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/nss/putsgent.c b/nss/putsgent.c
new file mode 100644
index 0000000..cd48eb2
--- /dev/null
+++ b/nss/putsgent.c
@@ -0,0 +1,81 @@
+/* Copyright (C) 2009-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <gshadow.h>
+#include <nss.h>
+
+#define _S(x) x ? x : ""
+
+
+/* Write an entry to the given stream.
+ This must know the format of the group file. */
+int
+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)
+ ++errors;
+
+ bool first = true;
+ char **sp = g->sg_adm;
+ if (sp != NULL)
+ while (*sp != NULL)
+ {
+ if (fprintf (stream, "%s%s", first ? "" : ",", *sp++) < 0)
+ {
+ ++errors;
+ break;
+ }
+ first = false;
+ }
+ if (putc_unlocked (':', stream) == EOF)
+ ++errors;
+
+ first = true;
+ sp = g->sg_mem;
+ if (sp != NULL)
+ while (*sp != NULL)
+ {
+ if (fprintf (stream, "%s%s", first ? "" : ",", *sp++) < 0)
+ {
+ ++errors;
+ break;
+ }
+ first = false;
+ }
+ if (putc_unlocked ('\n', stream) == EOF)
+ ++errors;
+
+ _IO_funlockfile (stream);
+
+ return errors ? -1 : 0;
+}