/* Copyright (C) 1991,92,96,98,99,2000,2005 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, 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 (__builtin_expect (gr == NULL, 0) || __builtin_expect (stream == NULL, 0)) { __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) { int i; for (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; }