From 3bbceb1287e3df7eb75e7a9852278d4eb9d33a00 Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Tue, 31 Oct 1995 06:54:40 +0000 Subject: Tue Oct 31 00:07:29 1995 Roland McGrath * sysdeps/mach/hurd/group_member.c: New file. * sysdeps/generic/group_member.c: New file. * Makerules (lib-noranlib): Don't depend on $(install-lib). (others): Do. * extra-lib.mk: Fix test of $(lib)-no-lib-dep. Mon Oct 30 12:33:10 1995 Roland McGrath * Rules (others): Depend on $(extra-objs). * posix/unistd.h [__USE_GNU]: Declare group_member, __group_member. * posix/Makefile (routines): Add group_member. * sysdeps/posix/euidaccess.c: New file, adapted from fileutils. * sysdeps/unix/sysv/linux/i386/sigaction.c: Tighten constraint for SIG operand in asm so it must be a register. Add dead return to quiet gcc warning. * Makerules (sysd-rules): Write a defn for sysd-rules-done. [! sysd-rules-done]: Inhibit deps. --- sysdeps/generic/group_member.c | 50 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 sysdeps/generic/group_member.c (limited to 'sysdeps/generic/group_member.c') diff --git a/sysdeps/generic/group_member.c b/sysdeps/generic/group_member.c new file mode 100644 index 0000000000..31d2e87f53 --- /dev/null +++ b/sysdeps/generic/group_member.c @@ -0,0 +1,50 @@ +/* `group_member' -- test if process is in a given group. +Copyright (C) 1995 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include + +#ifndef NGROUPS_MAX +#define NGROUPS_MAX 16 /* First guess. */ +#endif + +int +__group_member (gid) + gid_t gid; +{ + int n, size; + gid_t *groups; + + size = NGROUPS_MAX; + do + { + groups = __alloca (size * sizeof *groups); + n = __getgroups (size, groups); + size *= 2; + } while (n == size / 2); + + while (n > 0) + if (groups[n--] == gid) + return 1; + + return 0; +} +weak_alias (__group_member, group_member) -- cgit 1.4.1