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6f52b16c | 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
9317259e SR |
2 | #ifndef _ASM_GENERIC_FCNTL_H |
3 | #define _ASM_GENERIC_FCNTL_H | |
4 | ||
5ac353f9 SR |
5 | #include <linux/types.h> |
6 | ||
ecf081d1 EP |
7 | /* |
8 | * FMODE_EXEC is 0x20 | |
75069f2b | 9 | * FMODE_NONOTIFY is 0x4000000 |
ecf081d1 EP |
10 | * These cannot be used by userspace O_* until internal and external open |
11 | * flags are split. | |
12 | * -Eric Paris | |
13 | */ | |
14 | ||
454eedb8 WF |
15 | /* |
16 | * When introducing new O_* bits, please check its uniqueness in fcntl_init(). | |
17 | */ | |
18 | ||
e64ca97f SR |
19 | #define O_ACCMODE 00000003 |
20 | #define O_RDONLY 00000000 | |
21 | #define O_WRONLY 00000001 | |
22 | #define O_RDWR 00000002 | |
23 | #ifndef O_CREAT | |
24 | #define O_CREAT 00000100 /* not fcntl */ | |
25 | #endif | |
26 | #ifndef O_EXCL | |
27 | #define O_EXCL 00000200 /* not fcntl */ | |
28 | #endif | |
29 | #ifndef O_NOCTTY | |
30 | #define O_NOCTTY 00000400 /* not fcntl */ | |
31 | #endif | |
32 | #ifndef O_TRUNC | |
33 | #define O_TRUNC 00001000 /* not fcntl */ | |
34 | #endif | |
35 | #ifndef O_APPEND | |
36 | #define O_APPEND 00002000 | |
37 | #endif | |
38 | #ifndef O_NONBLOCK | |
39 | #define O_NONBLOCK 00004000 | |
40 | #endif | |
6b2f3d1f CH |
41 | #ifndef O_DSYNC |
42 | #define O_DSYNC 00010000 /* used to be O_SYNC, see below */ | |
e64ca97f SR |
43 | #endif |
44 | #ifndef FASYNC | |
45 | #define FASYNC 00020000 /* fcntl, for BSD compatibility */ | |
46 | #endif | |
47 | #ifndef O_DIRECT | |
48 | #define O_DIRECT 00040000 /* direct disk access hint */ | |
49 | #endif | |
50 | #ifndef O_LARGEFILE | |
51 | #define O_LARGEFILE 00100000 | |
52 | #endif | |
53 | #ifndef O_DIRECTORY | |
54 | #define O_DIRECTORY 00200000 /* must be a directory */ | |
55 | #endif | |
56 | #ifndef O_NOFOLLOW | |
57 | #define O_NOFOLLOW 00400000 /* don't follow links */ | |
58 | #endif | |
59 | #ifndef O_NOATIME | |
60 | #define O_NOATIME 01000000 | |
61 | #endif | |
f23513e8 UD |
62 | #ifndef O_CLOEXEC |
63 | #define O_CLOEXEC 02000000 /* set close_on_exec */ | |
64 | #endif | |
6b2f3d1f CH |
65 | |
66 | /* | |
76b7e005 | 67 | * Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using |
6b2f3d1f CH |
68 | * the O_SYNC flag. We continue to use the existing numerical value |
69 | * for O_DSYNC semantics now, but using the correct symbolic name for it. | |
70 | * This new value is used to request true Posix O_SYNC semantics. It is | |
71 | * defined in this strange way to make sure applications compiled against | |
72 | * new headers get at least O_DSYNC semantics on older kernels. | |
73 | * | |
74 | * This has the nice side-effect that we can simply test for O_DSYNC | |
75 | * wherever we do not care if O_DSYNC or O_SYNC is used. | |
76 | * | |
77 | * Note: __O_SYNC must never be used directly. | |
78 | */ | |
79 | #ifndef O_SYNC | |
80 | #define __O_SYNC 04000000 | |
81 | #define O_SYNC (__O_SYNC|O_DSYNC) | |
82 | #endif | |
83 | ||
1abf0c71 AV |
84 | #ifndef O_PATH |
85 | #define O_PATH 010000000 | |
86 | #endif | |
87 | ||
bb458c64 AV |
88 | #ifndef __O_TMPFILE |
89 | #define __O_TMPFILE 020000000 | |
60545d0d AV |
90 | #endif |
91 | ||
bb458c64 | 92 | /* a horrid kludge trying to make sure that this will fail on old kernels */ |
ba57ea64 AV |
93 | #define O_TMPFILE (__O_TMPFILE | O_DIRECTORY) |
94 | #define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT) | |
bb458c64 | 95 | |
e64ca97f SR |
96 | #ifndef O_NDELAY |
97 | #define O_NDELAY O_NONBLOCK | |
98 | #endif | |
9317259e SR |
99 | |
100 | #define F_DUPFD 0 /* dup */ | |
101 | #define F_GETFD 1 /* get close_on_exec */ | |
102 | #define F_SETFD 2 /* set/clear close_on_exec */ | |
103 | #define F_GETFL 3 /* get file->f_flags */ | |
104 | #define F_SETFL 4 /* set file->f_flags */ | |
1abf62af SR |
105 | #ifndef F_GETLK |
106 | #define F_GETLK 5 | |
107 | #define F_SETLK 6 | |
108 | #define F_SETLKW 7 | |
109 | #endif | |
110 | #ifndef F_SETOWN | |
111 | #define F_SETOWN 8 /* for sockets. */ | |
112 | #define F_GETOWN 9 /* for sockets. */ | |
113 | #endif | |
114 | #ifndef F_SETSIG | |
115 | #define F_SETSIG 10 /* for sockets. */ | |
116 | #define F_GETSIG 11 /* for sockets. */ | |
117 | #endif | |
71ccb83c PZ |
118 | |
119 | #ifndef CONFIG_64BIT | |
120 | #ifndef F_GETLK64 | |
121 | #define F_GETLK64 12 /* using 'struct flock64' */ | |
122 | #define F_SETLK64 13 | |
123 | #define F_SETLKW64 14 | |
124 | #endif | |
125 | #endif | |
126 | ||
ba0a6c9f | 127 | #ifndef F_SETOWN_EX |
71ccb83c PZ |
128 | #define F_SETOWN_EX 15 |
129 | #define F_GETOWN_EX 16 | |
ba0a6c9f PZ |
130 | #endif |
131 | ||
1d151c33 CG |
132 | #ifndef F_GETOWNER_UIDS |
133 | #define F_GETOWNER_UIDS 17 | |
134 | #endif | |
135 | ||
5d50ffd7 | 136 | /* |
0d3f7a2d | 137 | * Open File Description Locks |
5d50ffd7 | 138 | * |
0d3f7a2d | 139 | * Usually record locks held by a process are released on *any* close and are |
5d50ffd7 JL |
140 | * not inherited across a fork(). |
141 | * | |
0d3f7a2d JL |
142 | * These cmd values will set locks that conflict with process-associated |
143 | * record locks, but are "owned" by the open file description, not the | |
144 | * process. This means that they are inherited across fork() like BSD (flock) | |
145 | * locks, and they are only released automatically when the last reference to | |
146 | * the the open file against which they were acquired is put. | |
5d50ffd7 | 147 | */ |
0d3f7a2d JL |
148 | #define F_OFD_GETLK 36 |
149 | #define F_OFD_SETLK 37 | |
150 | #define F_OFD_SETLKW 38 | |
5d50ffd7 | 151 | |
ba0a6c9f PZ |
152 | #define F_OWNER_TID 0 |
153 | #define F_OWNER_PID 1 | |
978b4053 | 154 | #define F_OWNER_PGRP 2 |
ba0a6c9f PZ |
155 | |
156 | struct f_owner_ex { | |
157 | int type; | |
269b8fd5 | 158 | __kernel_pid_t pid; |
ba0a6c9f | 159 | }; |
9317259e SR |
160 | |
161 | /* for F_[GET|SET]FL */ | |
162 | #define FD_CLOEXEC 1 /* actually anything with low bit set goes */ | |
163 | ||
1abf62af SR |
164 | /* for posix fcntl() and lockf() */ |
165 | #ifndef F_RDLCK | |
166 | #define F_RDLCK 0 | |
167 | #define F_WRLCK 1 | |
168 | #define F_UNLCK 2 | |
169 | #endif | |
170 | ||
171 | /* for old implementation of bsd flock () */ | |
172 | #ifndef F_EXLCK | |
173 | #define F_EXLCK 4 /* or 3 */ | |
174 | #define F_SHLCK 8 /* or 4 */ | |
175 | #endif | |
176 | ||
9317259e SR |
177 | /* operations for bsd flock(), also used by the kernel implementation */ |
178 | #define LOCK_SH 1 /* shared lock */ | |
179 | #define LOCK_EX 2 /* exclusive lock */ | |
180 | #define LOCK_NB 4 /* or'd with one of the above to prevent | |
181 | blocking */ | |
182 | #define LOCK_UN 8 /* remove lock */ | |
183 | ||
184 | #define LOCK_MAND 32 /* This is a mandatory flock ... */ | |
185 | #define LOCK_READ 64 /* which allows concurrent read operations */ | |
186 | #define LOCK_WRITE 128 /* which allows concurrent write operations */ | |
187 | #define LOCK_RW 192 /* which allows concurrent read & write ops */ | |
188 | ||
189 | #define F_LINUX_SPECIFIC_BASE 1024 | |
190 | ||
5ac353f9 SR |
191 | #ifndef HAVE_ARCH_STRUCT_FLOCK |
192 | #ifndef __ARCH_FLOCK_PAD | |
193 | #define __ARCH_FLOCK_PAD | |
194 | #endif | |
195 | ||
196 | struct flock { | |
197 | short l_type; | |
198 | short l_whence; | |
85efde6f AB |
199 | __kernel_off_t l_start; |
200 | __kernel_off_t l_len; | |
201 | __kernel_pid_t l_pid; | |
5ac353f9 SR |
202 | __ARCH_FLOCK_PAD |
203 | }; | |
204 | #endif | |
205 | ||
8d286aa5 SR |
206 | #ifndef HAVE_ARCH_STRUCT_FLOCK64 |
207 | #ifndef __ARCH_FLOCK64_PAD | |
208 | #define __ARCH_FLOCK64_PAD | |
209 | #endif | |
210 | ||
211 | struct flock64 { | |
212 | short l_type; | |
213 | short l_whence; | |
85efde6f AB |
214 | __kernel_loff_t l_start; |
215 | __kernel_loff_t l_len; | |
216 | __kernel_pid_t l_pid; | |
8d286aa5 SR |
217 | __ARCH_FLOCK64_PAD |
218 | }; | |
219 | #endif | |
8d286aa5 | 220 | |
9317259e | 221 | #endif /* _ASM_GENERIC_FCNTL_H */ |