File: /usr/include/asm/fcntl.h

1     #ifndef _I386_FCNTL_H
2     #define _I386_FCNTL_H
3     
4     /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
5        located on an ext2 file system */
6     #define O_ACCMODE	   0003
7     #define O_RDONLY	     00
8     #define O_WRONLY	     01
9     #define O_RDWR		     02
10     #define O_CREAT		   0100	/* not fcntl */
11     #define O_EXCL		   0200	/* not fcntl */
12     #define O_NOCTTY	   0400	/* not fcntl */
13     #define O_TRUNC		  01000	/* not fcntl */
14     #define O_APPEND	  02000
15     #define O_NONBLOCK	  04000
16     #define O_NDELAY	O_NONBLOCK
17     #define O_SYNC		 010000
18     #define FASYNC		 020000	/* fcntl, for BSD compatibility */
19     #define O_DIRECT	 040000	/* direct disk access hint - currently ignored */
20     #define O_LARGEFILE	0100000
21     #define O_DIRECTORY	0200000	/* must be a directory */
22     #define O_NOFOLLOW	0400000 /* don't follow links */
23     #define O_ATOMICLOOKUP	01000000 /* do atomic file lookup */
24     
25     #define F_DUPFD		0	/* dup */
26     #define F_GETFD		1	/* get close_on_exec */
27     #define F_SETFD		2	/* set/clear close_on_exec */
28     #define F_GETFL		3	/* get file->f_flags */
29     #define F_SETFL		4	/* set file->f_flags */
30     #define F_GETLK		5
31     #define F_SETLK		6
32     #define F_SETLKW	7
33     
34     #define F_SETOWN	8	/*  for sockets. */
35     #define F_GETOWN	9	/*  for sockets. */
36     #define F_SETSIG	10	/*  for sockets. */
37     #define F_GETSIG	11	/*  for sockets. */
38     
39     #define F_GETLK64	12	/*  using 'struct flock64' */
40     #define F_SETLK64	13
41     #define F_SETLKW64	14
42     
43     /* for F_[GET|SET]FL */
44     #define FD_CLOEXEC	1	/* actually anything with low bit set goes */
45     
46     /* for posix fcntl() and lockf() */
47     #define F_RDLCK		0
48     #define F_WRLCK		1
49     #define F_UNLCK		2
50     
51     /* for old implementation of bsd flock () */
52     #define F_EXLCK		4	/* or 3 */
53     #define F_SHLCK		8	/* or 4 */
54     
55     /* for leases */
56     #define F_INPROGRESS	16
57     
58     /* operations for bsd flock(), also used by the kernel implementation */
59     #define LOCK_SH		1	/* shared lock */
60     #define LOCK_EX		2	/* exclusive lock */
61     #define LOCK_NB		4	/* or'd with one of the above to prevent
62     				   blocking */
63     #define LOCK_UN		8	/* remove lock */
64     
65     #define LOCK_MAND	32	/* This is a mandatory flock */
66     #define LOCK_READ	64	/* ... Which allows concurrent read operations */
67     #define LOCK_WRITE	128	/* ... Which allows concurrent write operations */
68     #define LOCK_RW		192	/* ... Which allows concurrent read & write ops */
69     
70     struct flock {
71     	short l_type;
72     	short l_whence;
73     	off_t l_start;
74     	off_t l_len;
75     	pid_t l_pid;
76     };
77     
78     struct flock64 {
79     	short  l_type;
80     	short  l_whence;
81     	loff_t l_start;
82     	loff_t l_len;
83     	pid_t  l_pid;
84     };
85     
86     #define F_LINUX_SPECIFIC_BASE	1024
87     
88     #endif
89