1 /* Manipulate file descriptor. Linux LFS version.
2 Copyright (C) 2018-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #define fcntl __no_decl_fcntl
20 #define __fcntl __no_decl___fcntl
21 #include <fcntl.h>
22 #undef fcntl
23 #undef __fcntl
24 #include <stdarg.h>
25 #include <errno.h>
26 #include <sysdep-cancel.h>
27
28 #ifndef __NR_fcntl64
29 # define __NR_fcntl64 __NR_fcntl
30 #endif
31
32 #ifndef FCNTL_ADJUST_CMD
33 # define FCNTL_ADJUST_CMD(__cmd) __cmd
34 #endif
35
36 int
__libc_fcntl64(int fd,int cmd,...)37 __libc_fcntl64 (int fd, int cmd, ...)
38 {
39 va_list ap;
40 void *arg;
41
42 va_start (ap, cmd);
43 arg = va_arg (ap, void *);
44 va_end (ap);
45
46 cmd = FCNTL_ADJUST_CMD (cmd);
47
48 if (cmd == F_SETLKW || cmd == F_SETLKW64 || cmd == F_OFD_SETLKW)
49 return SYSCALL_CANCEL (fcntl64, fd, cmd, arg);
50
51 return __fcntl64_nocancel_adjusted (fd, cmd, arg);
52 }
53 libc_hidden_def (__libc_fcntl64)
54 weak_alias (__libc_fcntl64, __fcntl64)
55 libc_hidden_weak (__fcntl64)
56 weak_alias (__libc_fcntl64, fcntl64)
57 #if __TIMESIZE != 64
58 weak_alias (__libc_fcntl64, __fcntl_time64)
59 #endif
60
61 #ifdef __OFF_T_MATCHES_OFF64_T
62 weak_alias (__libc_fcntl64, __libc_fcntl)
63 weak_alias (__libc_fcntl64, __fcntl)
64 weak_alias (__libc_fcntl64, __GI___fcntl)
65 weak_alias (__libc_fcntl64, fcntl)
66 #endif
67