xref: /xnu-8792.41.9/bsd/sys/_types/_seek_set.h (revision 5c2921b07a2480ab43ec66f5b9e41cb872bc554f)
1 /*
2  * Copyright (c) 2003-2012 Apple Inc. All rights reserved.
3  *
4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
5  *
6  * This file contains Original Code and/or Modifications of Original Code
7  * as defined in and that are subject to the Apple Public Source License
8  * Version 2.0 (the 'License'). You may not use this file except in
9  * compliance with the License. The rights granted to you under the License
10  * may not be used to create, or enable the creation or redistribution of,
11  * unlawful or unlicensed copies of an Apple operating system, or to
12  * circumvent, violate, or enable the circumvention or violation of, any
13  * terms of an Apple operating system software license agreement.
14  *
15  * Please obtain a copy of the License at
16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
17  *
18  * The Original Code and all software distributed under the License are
19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
23  * Please see the License for the specific language governing rights and
24  * limitations under the License.
25  *
26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
27  */
28 
29 #include <sys/cdefs.h>
30 
31 /* whence values for lseek(2) */
32 #ifndef SEEK_SET
33 #define SEEK_SET        0       /* set file offset to offset */
34 #define SEEK_CUR        1       /* set file offset to current plus offset */
35 #define SEEK_END        2       /* set file offset to EOF plus offset */
36 #endif  /* !SEEK_SET */
37 
38 #if __DARWIN_C_LEVEL >= __DARWIN_C_FULL
39 #ifndef SEEK_HOLE
40 #define SEEK_HOLE       3       /* set file offset to the start of the next hole greater than or equal to the supplied offset */
41 #endif
42 
43 #ifndef SEEK_DATA
44 #define SEEK_DATA       4       /* set file offset to the start of the next non-hole file region greater than or equal to the supplied offset */
45 #endif
46 #endif /* __DARWIN_C_LEVEL >= __DARWIN_C_FULL */
47