glibc/grp/putgrent.c
Paul Eggert 2b778ceb40 Update copyright dates with scripts/update-copyrights
I used these shell commands:

../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")

and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
2021-01-02 12:17:34 -08:00

77 lines
2.1 KiB
C

/* Copyright (C) 1991-2021 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;
}