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65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* Linux fcntl syscall implementation -- non-cancellable.
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Copyright (C) 2018-2024 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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<https://www.gnu.org/licenses/>. */
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#include <fcntl.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <sysdep-cancel.h>
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#include <not-cancel.h>
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#ifndef __NR_fcntl64
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# define __NR_fcntl64 __NR_fcntl
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#endif
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#ifndef FCNTL_ADJUST_CMD
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# define FCNTL_ADJUST_CMD(__cmd) __cmd
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#endif
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int
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__fcntl64_nocancel (int fd, int cmd, ...)
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{
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va_list ap;
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void *arg;
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va_start (ap, cmd);
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arg = va_arg (ap, void *);
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va_end (ap);
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cmd = FCNTL_ADJUST_CMD (cmd);
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return __fcntl64_nocancel_adjusted (fd, cmd, arg);
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}
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hidden_def (__fcntl64_nocancel)
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int
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__fcntl64_nocancel_adjusted (int fd, int cmd, void *arg)
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{
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if (cmd == F_GETOWN)
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{
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struct f_owner_ex fex;
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int res = INTERNAL_SYSCALL_CALL (fcntl64, fd, F_GETOWN_EX, &fex);
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if (!INTERNAL_SYSCALL_ERROR_P (res))
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return fex.type == F_OWNER_GID ? -fex.pid : fex.pid;
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return INLINE_SYSCALL_ERROR_RETURN_VALUE
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(INTERNAL_SYSCALL_ERRNO (res));
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}
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return INLINE_SYSCALL_CALL (fcntl64, fd, cmd, (void *) arg);
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}
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