diff options
Diffstat (limited to 'grp/putgrent.c')
-rw-r--r-- | grp/putgrent.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/grp/putgrent.c b/grp/putgrent.c new file mode 100644 index 0000000..7d7732a --- /dev/null +++ b/grp/putgrent.c @@ -0,0 +1,70 @@ +/* Copyright (C) 1991, 1992, 1996, 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#include <errno.h> +#include <stdio.h> +#include <grp.h> + +#ifdef USE_IN_LIBIO +# define flockfile(s) _IO_flockfile (s) +# define funlockfile(s) _IO_funlockfile (s) +#endif + +#define _S(x) x ? x : "" + +/* Write an entry to the given stream. + This must know the format of the group file. */ +int +putgrent (gr, stream) + const struct group *gr; + FILE *stream; +{ + int retval; + + if (gr == NULL || stream == NULL) + { + __set_errno (EINVAL); + return -1; + } + + flockfile (stream); + + retval = fprintf (stream, "%s:%s:%u:", + gr->gr_name, _S (gr->gr_passwd), gr->gr_gid); + if (retval < 0) + return -1; + + if (gr->gr_mem != NULL) + { + int i; + + for (i = 0 ; gr->gr_mem[i] != NULL; i++) + if (fprintf (stream, "%c%s", i == 0 ? ':' : ',', 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; +} |