| /* Copyright (C) 2000-2018 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <fcntl.h> |
| #include <stdarg.h> |
| #include <errno.h> |
| #include <sysdep-cancel.h> |
| #include <not-cancel.h> |
| |
| #ifndef __NR_fcntl64 |
| # define __NR_fcntl64 __NR_fcntl |
| #endif |
| |
| #ifndef FCNTL_ADJUST_CMD |
| # define FCNTL_ADJUST_CMD(__cmd) __cmd |
| #endif |
| |
| static int |
| fcntl_common (int fd, int cmd, void *arg) |
| { |
| if (cmd == F_GETOWN) |
| { |
| INTERNAL_SYSCALL_DECL (err); |
| struct f_owner_ex fex; |
| int res = INTERNAL_SYSCALL_CALL (fcntl64, err, fd, F_GETOWN_EX, &fex); |
| if (!INTERNAL_SYSCALL_ERROR_P (res, err)) |
| return fex.type == F_OWNER_GID ? -fex.pid : fex.pid; |
| |
| return INLINE_SYSCALL_ERROR_RETURN_VALUE (INTERNAL_SYSCALL_ERRNO (res, |
| err)); |
| } |
| |
| return INLINE_SYSCALL_CALL (fcntl64, fd, cmd, (void *) arg); |
| } |
| |
| int |
| __libc_fcntl (int fd, int cmd, ...) |
| { |
| va_list ap; |
| void *arg; |
| |
| va_start (ap, cmd); |
| arg = va_arg (ap, void *); |
| va_end (ap); |
| |
| cmd = FCNTL_ADJUST_CMD (cmd); |
| |
| if (cmd == F_SETLKW || cmd == F_SETLKW64) |
| return SYSCALL_CANCEL (fcntl64, fd, cmd, (void *) arg); |
| |
| return fcntl_common (fd, cmd, arg); |
| } |
| libc_hidden_def (__libc_fcntl) |
| |
| #if !IS_IN (rtld) |
| int |
| __fcntl_nocancel (int fd, int cmd, ...) |
| { |
| va_list ap; |
| void *arg; |
| |
| va_start (ap, cmd); |
| arg = va_arg (ap, void *); |
| va_end (ap); |
| |
| return fcntl_common (fd, cmd, arg); |
| } |
| #else |
| strong_alias (__libc_fcntl, __fcntl_nocancel) |
| #endif |
| libc_hidden_def (__fcntl_nocancel) |
| |
| weak_alias (__libc_fcntl, __fcntl) |
| libc_hidden_weak (__fcntl) |
| weak_alias (__libc_fcntl, fcntl) |