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70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/* Copyright (C) 1998, 2000, 2003, 2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/fsuid.h>
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#include <sysdep.h>
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#include <sys/syscall.h>
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#include <linux/posix_types.h>
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#include <kernel-features.h>
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#ifdef __NR_setfsgid
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# ifdef __NR_setfsgid32
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# if __ASSUME_32BITUIDS == 0
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/* This variable is shared with all files that need to check for 32bit
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uids. */
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extern int __libc_missing_32bit_uids attribute_hidden;
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# endif
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# endif /* __NR_setfsgid32 */
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int
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setfsgid (gid_t gid)
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{
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INTERNAL_SYSCALL_DECL (err);
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# if __ASSUME_32BITUIDS > 0
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/* No error checking. */
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return INTERNAL_SYSCALL (setfsgid32, err, 1, gid);
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# else
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# ifdef __NR_setfsgid32
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if (__libc_missing_32bit_uids <= 0)
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{
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int result;
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result = INTERNAL_SYSCALL (setfsgid32, err, 1, gid);
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if (! INTERNAL_SYSCALL_ERROR_P (result, err)
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|| INTERNAL_SYSCALL_ERRNO (result, err) != ENOSYS)
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return result;
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__libc_missing_32bit_uids = 1;
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}
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# endif /* __NR_setfsgid32 */
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if (gid != (gid_t) ((__kernel_gid_t) gid))
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{
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__set_errno (EINVAL);
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return -1;
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}
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/* No error checking. */
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return INTERNAL_SYSCALL (setfsgid, err, 1, gid);
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# endif
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}
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#endif
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