1 /* Copyright (C) 2003-2021 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18 #include <errno.h>
19 #include <fcntl.h>
20 #include <sysdep.h>
21
22 int __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise);
23 int __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise);
24
25 /* Advice the system about the expected behaviour of the application with
26 respect to the file associated with FD. */
27
28 struct fadvise64_64_layout
29 {
30 int fd;
31 off64_t offset;
32 off64_t len;
33 int advise;
34 };
35
36 int
__posix_fadvise64_l64(int fd,off64_t offset,off64_t len,int advise)37 __posix_fadvise64_l64 (int fd, off64_t offset, off64_t len, int advise)
38 {
39 struct fadvise64_64_layout parameters;
40
41 parameters.fd = fd;
42 parameters.offset = offset;
43 parameters.len = len;
44 parameters.advise = advise;
45 int ret = INTERNAL_SYSCALL_CALL (fadvise64_64, ¶meters);
46 if (!INTERNAL_SYSCALL_ERROR_P (ret))
47 return 0;
48 return INTERNAL_SYSCALL_ERRNO (ret);
49 }
50
51 #include <shlib-compat.h>
52
53 #if SHLIB_COMPAT(libc, GLIBC_2_2, GLIBC_2_3_3)
54
55 int
56 attribute_compat_text_section
__posix_fadvise64_l32(int fd,off64_t offset,size_t len,int advise)57 __posix_fadvise64_l32 (int fd, off64_t offset, size_t len, int advise)
58 {
59 return __posix_fadvise64_l64 (fd, offset, len, advise);
60 }
61
62 versioned_symbol (libc, __posix_fadvise64_l64, posix_fadvise64, GLIBC_2_3_3);
63 compat_symbol (libc, __posix_fadvise64_l32, posix_fadvise64, GLIBC_2_2);
64 #else
65 strong_alias (__posix_fadvise64_l64, posix_fadvise64);
66 #endif
67