mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-21 20:40:05 +00:00
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/* Copyright (C) 1991-2023 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 <nss.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <grp.h>
|
|
|
|
#define flockfile(s) _IO_flockfile (s)
|
|
#define funlockfile(s) _IO_funlockfile (s)
|
|
|
|
#define _S(x) x ? x : ""
|
|
|
|
/* Write an entry to the given stream.
|
|
This must know the format of the group file. */
|
|
int
|
|
putgrent (const struct group *gr, FILE *stream)
|
|
{
|
|
int retval;
|
|
|
|
if (__glibc_unlikely (gr == NULL) || __glibc_unlikely (stream == NULL)
|
|
|| gr->gr_name == NULL || !__nss_valid_field (gr->gr_name)
|
|
|| !__nss_valid_field (gr->gr_passwd)
|
|
|| !__nss_valid_list_field (gr->gr_mem))
|
|
{
|
|
__set_errno (EINVAL);
|
|
return -1;
|
|
}
|
|
|
|
flockfile (stream);
|
|
|
|
if (gr->gr_name[0] == '+' || gr->gr_name[0] == '-')
|
|
retval = fprintf (stream, "%s:%s::",
|
|
gr->gr_name, _S (gr->gr_passwd));
|
|
else
|
|
retval = fprintf (stream, "%s:%s:%lu:",
|
|
gr->gr_name, _S (gr->gr_passwd),
|
|
(unsigned long int) gr->gr_gid);
|
|
if (__builtin_expect (retval, 0) < 0)
|
|
{
|
|
funlockfile (stream);
|
|
return -1;
|
|
}
|
|
|
|
if (gr->gr_mem != NULL)
|
|
{
|
|
for (size_t i = 0; gr->gr_mem[i] != NULL; i++)
|
|
if (fprintf (stream, i == 0 ? "%s" : ",%s", gr->gr_mem[i]) < 0)
|
|
{
|
|
/* What else can we do? */
|
|
funlockfile (stream);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
retval = fputc_unlocked ('\n', stream);
|
|
|
|
funlockfile (stream);
|
|
|
|
return retval < 0 ? -1 : 0;
|
|
}
|