1 | /* $NetBSD: linux32_fcntl.c,v 1.10 2014/05/17 09:30:07 njoly Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. All advertising materials mentioning features or use of this software |
15 | * must display the following acknowledgement: |
16 | * This product includes software developed by Emmanuel Dreyfus |
17 | * 4. The name of the author may not be used to endorse or promote |
18 | * products derived from this software without specific prior written |
19 | * permission. |
20 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
31 | * POSSIBILITY OF SUCH DAMAGE. |
32 | */ |
33 | |
34 | #include <sys/cdefs.h> |
35 | |
36 | __KERNEL_RCSID(0, "$NetBSD: linux32_fcntl.c,v 1.10 2014/05/17 09:30:07 njoly Exp $" ); |
37 | |
38 | #include <sys/types.h> |
39 | #include <sys/param.h> |
40 | #include <sys/signal.h> |
41 | #include <sys/fcntl.h> |
42 | #include <sys/filedesc.h> |
43 | |
44 | #include <machine/types.h> |
45 | |
46 | #include <sys/syscallargs.h> |
47 | |
48 | #include <compat/netbsd32/netbsd32.h> |
49 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
50 | |
51 | #include <compat/linux/common/linux_types.h> |
52 | #include <compat/linux/common/linux_fcntl.h> |
53 | #include <compat/linux/common/linux_machdep.h> |
54 | #include <compat/linux/common/linux_misc.h> |
55 | #include <compat/linux/common/linux_ipc.h> |
56 | #include <compat/linux/common/linux_sem.h> |
57 | #include <compat/linux/linux_syscallargs.h> |
58 | |
59 | #include <compat/linux32/common/linux32_types.h> |
60 | #include <compat/linux32/common/linux32_signal.h> |
61 | #include <compat/linux32/common/linux32_machdep.h> |
62 | #include <compat/linux32/linux32_syscallargs.h> |
63 | |
64 | struct linux32_flock { |
65 | short l_type; |
66 | short l_whence; |
67 | int32_t l_start; |
68 | int32_t l_len; |
69 | linux_pid_t l_pid; |
70 | }; |
71 | |
72 | struct linux32_flock64 { |
73 | short l_type; |
74 | short l_whence; |
75 | netbsd32_int64 l_start; |
76 | netbsd32_int64 l_len; |
77 | linux_pid_t l_pid; |
78 | }; |
79 | |
80 | conv_linux_flock(linux32, flock) |
81 | conv_linux_flock(linux32, flock64) |
82 | |
83 | int |
84 | linux32_sys_open(struct lwp *l, const struct linux32_sys_open_args *uap, register_t *retval) |
85 | { |
86 | /* { |
87 | syscallarg(const netbsd32_charp) path; |
88 | syscallarg(int) flags; |
89 | syscallarg(int) mode; |
90 | } */ |
91 | struct linux_sys_open_args ua; |
92 | |
93 | NETBSD32TOP_UAP(path, const char); |
94 | NETBSD32TO64_UAP(flags); |
95 | NETBSD32TO64_UAP(mode); |
96 | |
97 | return linux_sys_open(l, &ua, retval); |
98 | } |
99 | |
100 | /* |
101 | * The linux support for 64bit file offsets introduced both an fcntl64() |
102 | * function and LINUX_F_SETLK64 (et al), however the fcntl64() function |
103 | * can still be passed LINUX_F_GETLK (etc). |
104 | * In practice this means that the two functions are identical! |
105 | * |
106 | * We have to intercept both sets of locking primitives because the |
107 | * structure layout of the 64bit version differs from that on amd64 due |
108 | * to extra padding because the alignment constraint for int64_t differs. |
109 | */ |
110 | |
111 | int |
112 | linux32_sys_fcntl(struct lwp *l, const struct linux32_sys_fcntl_args *uap, register_t *retval) |
113 | { |
114 | /* { |
115 | syscallarg(int) fd; |
116 | syscallarg(int) cmd; |
117 | syscallarg(netbsd32_voidp) arg; |
118 | } */ |
119 | struct linux_sys_fcntl_args ua; |
120 | int cmd = SCARG(uap, cmd); |
121 | |
122 | switch (cmd) { |
123 | case LINUX_F_GETLK64: |
124 | do_linux_getlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg), |
125 | linux32, flock64); |
126 | case LINUX_F_SETLK64: |
127 | case LINUX_F_SETLKW64: |
128 | do_linux_setlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg), |
129 | linux32, flock64, LINUX_F_SETLK64); |
130 | case LINUX_F_GETLK: |
131 | do_linux_getlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg), |
132 | linux32, flock); |
133 | case LINUX_F_SETLK: |
134 | case LINUX_F_SETLKW: |
135 | do_linux_setlk(SCARG(uap, fd), cmd, SCARG_P32(uap, arg), |
136 | linux32, flock, LINUX_F_SETLK); |
137 | default: |
138 | break; |
139 | } |
140 | |
141 | NETBSD32TO64_UAP(fd); |
142 | SCARG(&ua, cmd) = cmd; |
143 | NETBSD32TOP_UAP(arg, void); |
144 | |
145 | return linux_sys_fcntl(l, &ua, retval); |
146 | } |
147 | |
148 | int |
149 | linux32_sys_fadvise64(struct lwp *l, |
150 | const struct linux32_sys_fadvise64_args *uap, register_t *retval) |
151 | { |
152 | /* { |
153 | syscallarg(int) fd; |
154 | syscallarg(uint32_t) offlo; |
155 | syscallarg(uint32_t) offhi; |
156 | syscallarg(netbsd32_size_t) len; |
157 | syscallarg(int) advice; |
158 | } */ |
159 | off_t off = ((off_t)SCARG(uap, offhi) << 32) + SCARG(uap, offlo); |
160 | |
161 | return do_posix_fadvise(SCARG(uap, fd), off, |
162 | SCARG(uap, len), linux_to_bsd_posix_fadv(SCARG(uap, advice))); |
163 | } |
164 | |
165 | int |
166 | linux32_sys_fadvise64_64(struct lwp *l, |
167 | const struct linux32_sys_fadvise64_64_args *uap, register_t *retval) |
168 | { |
169 | /* { |
170 | syscallarg(int) fd; |
171 | syscallarg(uint32_t) offlo; |
172 | syscallarg(uint32_t) offhi; |
173 | syscallarg(uint32_t) lenlo; |
174 | syscallarg(uint32_t) lenhi; |
175 | syscallarg(int) advice; |
176 | } */ |
177 | off_t off = ((off_t)SCARG(uap, offhi) << 32) + SCARG(uap, offlo); |
178 | off_t len = ((off_t)SCARG(uap, lenhi) << 32) + SCARG(uap, lenlo); |
179 | |
180 | return do_posix_fadvise(SCARG(uap, fd), off, |
181 | len, linux_to_bsd_posix_fadv(SCARG(uap, advice))); |
182 | } |
183 | |