Annotation of src/sys/compat/linux/common/linux_fcntl.h, Revision 1.18
1.18 ! maxv 1: /* $NetBSD: linux_fcntl.h,v 1.17 2015/03/01 13:19:39 njoly Exp $ */
1.2 erh 2:
3: /*-
1.4 fvdl 4: * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
1.2 erh 5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
1.4 fvdl 8: * by Frank van der Linden and Eric Haszlakiewicz.
1.2 erh 9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29: * POSSIBILITY OF SUCH DAMAGE.
1.1 fvdl 30: */
31:
1.3 christos 32: #ifndef _LINUX_FCNTL_H
33: #define _LINUX_FCNTL_H
1.2 erh 34:
1.1 fvdl 35: /*
1.2 erh 36: * The arguments in the flock structure have a different order from the
37: * BSD structure.
1.1 fvdl 38: */
39:
1.2 erh 40: /* read/write mode for open(2) */
41: #define LINUX_O_RDONLY 0x0000
1.1 fvdl 42: #define LINUX_O_WRONLY 0x0001
43: #define LINUX_O_RDWR 0x0002
44: #define LINUX_O_ACCMODE 0x0003
45:
1.15 njoly 46: #define LINUX_AT_FDCWD -100
47: #define LINUX_AT_SYMLINK_NOFOLLOW 0x0100
48: #define LINUX_AT_REMOVEDIR 0x0200
49: #define LINUX_AT_SYMLINK_FOLLOW 0x0400
50: #define LINUX_AT_NO_AUTOMOUNT 0x0800
51: #define LINUX_AT_EMPTY_PATH 0x1000
52:
1.16 njoly 53: int linux_to_bsd_ioflags(int);
1.15 njoly 54: int linux_to_bsd_atflags(int);
55:
1.1 fvdl 56: struct linux_flock {
57: short l_type;
58: short l_whence;
59: linux_off_t l_start;
60: linux_off_t l_len;
61: linux_pid_t l_pid;
62: };
63:
1.9 christos 64: struct linux_flock64 {
65: short l_type;
66: short l_whence;
67: off_t l_start;
68: off_t l_len;
69: linux_pid_t l_pid;
70: };
1.12 dsl 71:
1.3 christos 72: #if defined(__i386__)
73: #include <compat/linux/arch/i386/linux_fcntl.h>
1.5 itohy 74: #elif defined(__m68k__)
75: #include <compat/linux/arch/m68k/linux_fcntl.h>
1.3 christos 76: #elif defined(__alpha__)
77: #include <compat/linux/arch/alpha/linux_fcntl.h>
1.6 manu 78: #elif defined(__powerpc__)
79: #include <compat/linux/arch/powerpc/linux_fcntl.h>
1.7 manu 80: #elif defined(__mips__)
81: #include <compat/linux/arch/mips/linux_fcntl.h>
1.8 bjh21 82: #elif defined(__arm__)
83: #include <compat/linux/arch/arm/linux_fcntl.h>
1.10 manu 84: #elif defined(__amd64__)
85: #include <compat/linux/arch/amd64/linux_fcntl.h>
1.3 christos 86: #else
87: #error Undefined linux_fcntl.h machine type.
88: #endif
89:
1.17 njoly 90: /* Linux specific fcntl(2) commands */
91: #define LINUX_F_SPECIFIC_BASE 1024
92: #define LINUX_F_SETLEASE (LINUX_F_SPECIFIC_BASE + 0)
93: #define LINUX_F_GETLEASE (LINUX_F_SPECIFIC_BASE + 1)
94: #define LINUX_F_NOTIFY (LINUX_F_SPECIFIC_BASE + 2)
95: #define LINUX_F_CANCELLK (LINUX_F_SPECIFIC_BASE + 5)
96: #define LINUX_F_DUPFD_CLOEXEC (LINUX_F_SPECIFIC_BASE + 6)
97: #define LINUX_F_SETPIPE_SZ (LINUX_F_SPECIFIC_BASE + 7)
98: #define LINUX_F_GETPIPE_SZ (LINUX_F_SPECIFIC_BASE + 8)
99:
1.12 dsl 100: /*
101: * We have to have 4 copies of the code that converts linux fcntl() file
102: * locking to native form because there are 4 layouts for the structures.
103: * To avoid replicating code, these defines are used.
104: *
105: * The next two functions take care of converting the flock
106: * structure back and forth between Linux and NetBSD format.
107: * The only difference in the structures is the order and size of
108: * the fields, and the 'whence' value.
109: */
110:
111: #define conv_linux_flock(LINUX, FLOCK) \
112: static void \
113: bsd_to_##LINUX##_##FLOCK(struct LINUX##_##FLOCK *lfp, const struct flock *bfp) \
114: copy_flock(lfp, LINUX_F, bfp, F) \
115: \
116: static void \
117: LINUX##_to_bsd_##FLOCK(struct flock *bfp, const struct LINUX##_##FLOCK *lfp) \
118: copy_flock(bfp, F, lfp, LINUX_F)
119:
120: #define copy_flock(dst, dst_f, src, src_f) { \
121: dst->l_start = src->l_start; \
122: dst->l_len = src->l_len; \
123: dst->l_pid = src->l_pid; \
124: dst->l_whence = src->l_whence; \
125: switch (src->l_type) { \
126: case src_f##_RDLCK: \
127: dst->l_type = dst_f##_RDLCK; \
128: break; \
129: case src_f##_UNLCK: \
130: dst->l_type = dst_f##_UNLCK; \
131: break; \
132: case src_f##_WRLCK: \
133: dst->l_type = dst_f##_WRLCK; \
134: break; \
1.18 ! maxv 135: default: \
! 136: dst->l_type = -1; \
! 137: break; \
1.12 dsl 138: } \
139: }
140:
141: /*
142: * These two defines do the work within the sys_fcntl() switch statement.
143: */
144:
145: #define do_linux_getlk(fd, cmd, arg, LINUX, FLOCK) do { \
146: struct LINUX##_##FLOCK lfl; \
147: struct flock bfl; \
148: int fl_error; \
149: if ((fl_error = copyin(arg, &lfl, sizeof lfl))) \
150: return fl_error; \
151: LINUX##_to_bsd_##FLOCK(&bfl, &lfl); \
1.13 ad 152: fl_error = do_fcntl_lock(fd, F_GETLK, &bfl); \
1.12 dsl 153: if (fl_error) \
154: return fl_error; \
155: bsd_to_##LINUX##_##FLOCK(&lfl, &bfl); \
156: return copyout(&lfl, arg, sizeof lfl); \
157: } while (0)
158:
159: #define do_linux_setlk(fd, cmd, arg, LINUX, FLOCK, setlk) do { \
160: struct LINUX##_##FLOCK lfl; \
161: struct flock bfl; \
162: int fl_error; \
163: if ((fl_error = copyin(arg, &lfl, sizeof lfl))) \
164: return fl_error; \
165: LINUX##_to_bsd_##FLOCK(&bfl, &lfl); \
1.13 ad 166: return do_fcntl_lock(fd, cmd == setlk ? F_SETLK : F_SETLKW, &bfl); \
1.12 dsl 167: } while (0)
168:
169:
1.3 christos 170: #endif /* !_LINUX_FCNTL_H */
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