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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * Conversion between 32-bit and 64-bit native system calls. | |
4 | * | |
5 | * Copyright (C) 2000 Silicon Graphics, Inc. | |
6 | * Written by Ulf Carlsson (ulfc@engr.sgi.com) | |
1da177e4 | 7 | */ |
1da177e4 LT |
8 | #include <linux/compiler.h> |
9 | #include <linux/mm.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/file.h> | |
1da177e4 | 12 | #include <linux/highuid.h> |
1da177e4 LT |
13 | #include <linux/resource.h> |
14 | #include <linux/highmem.h> | |
15 | #include <linux/time.h> | |
16 | #include <linux/times.h> | |
17 | #include <linux/poll.h> | |
1da177e4 LT |
18 | #include <linux/skbuff.h> |
19 | #include <linux/filter.h> | |
20 | #include <linux/shm.h> | |
21 | #include <linux/sem.h> | |
22 | #include <linux/msg.h> | |
23 | #include <linux/icmpv6.h> | |
24 | #include <linux/syscalls.h> | |
25 | #include <linux/sysctl.h> | |
26 | #include <linux/utime.h> | |
27 | #include <linux/utsname.h> | |
28 | #include <linux/personality.h> | |
1da177e4 | 29 | #include <linux/dnotify.h> |
1da177e4 LT |
30 | #include <linux/binfmts.h> |
31 | #include <linux/security.h> | |
32 | #include <linux/compat.h> | |
33 | #include <linux/vfs.h> | |
cba4fbbf | 34 | #include <linux/ipc.h> |
5a0e3ad6 | 35 | #include <linux/slab.h> |
1da177e4 LT |
36 | |
37 | #include <net/sock.h> | |
38 | #include <net/scm.h> | |
39 | ||
431dc804 | 40 | #include <asm/compat-signal.h> |
1da177e4 | 41 | #include <asm/sim.h> |
7c0f6ba6 | 42 | #include <linux/uaccess.h> |
1da177e4 LT |
43 | #include <asm/mmu_context.h> |
44 | #include <asm/mman.h> | |
45 | ||
1da177e4 | 46 | #ifdef __MIPSEB__ |
21a151d8 | 47 | #define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) |
1da177e4 LT |
48 | #endif |
49 | #ifdef __MIPSEL__ | |
21a151d8 | 50 | #define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) |
1da177e4 LT |
51 | #endif |
52 | ||
dbda6ac0 RB |
53 | SYSCALL_DEFINE4(32_truncate64, const char __user *, path, |
54 | unsigned long, __dummy, unsigned long, a2, unsigned long, a3) | |
1da177e4 | 55 | { |
df260e21 | 56 | return ksys_truncate(path, merge_64(a2, a3)); |
1da177e4 LT |
57 | } |
58 | ||
dbda6ac0 RB |
59 | SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy, |
60 | unsigned long, a2, unsigned long, a3) | |
1da177e4 | 61 | { |
411d9475 | 62 | return ksys_ftruncate(fd, merge_64(a2, a3)); |
1da177e4 LT |
63 | } |
64 | ||
d6c178e9 RB |
65 | SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high, |
66 | unsigned int, offset_low, loff_t __user *, result, | |
67 | unsigned int, origin) | |
1da177e4 LT |
68 | { |
69 | return sys_llseek(fd, offset_high, offset_low, result, origin); | |
70 | } | |
71 | ||
72 | /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + | |
73 | lseek back to original location. They fail just like lseek does on | |
70342287 | 74 | non-seekable files. */ |
1da177e4 | 75 | |
dbda6ac0 RB |
76 | SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count, |
77 | unsigned long, unused, unsigned long, a4, unsigned long, a5) | |
1da177e4 | 78 | { |
36028d5d | 79 | return ksys_pread64(fd, buf, count, merge_64(a4, a5)); |
1da177e4 LT |
80 | } |
81 | ||
dbda6ac0 RB |
82 | SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf, |
83 | size_t, count, u32, unused, u64, a4, u64, a5) | |
1da177e4 | 84 | { |
36028d5d | 85 | return ksys_pwrite64(fd, buf, count, merge_64(a4, a5)); |
1da177e4 LT |
86 | } |
87 | ||
dbda6ac0 | 88 | SYSCALL_DEFINE1(32_personality, unsigned long, personality) |
1da177e4 | 89 | { |
d62c9ced | 90 | unsigned int p = personality & 0xffffffff; |
1da177e4 | 91 | int ret; |
d62c9ced | 92 | |
53571ce4 | 93 | if (personality(current->personality) == PER_LINUX32 && |
d62c9ced DD |
94 | personality(p) == PER_LINUX) |
95 | p = (p & ~PER_MASK) | PER_LINUX32; | |
96 | ret = sys_personality(p); | |
97 | if (ret != -1 && personality(ret) == PER_LINUX32) | |
98 | ret = (ret & ~PER_MASK) | PER_LINUX; | |
1da177e4 LT |
99 | return ret; |
100 | } | |
101 | ||
1da177e4 | 102 | asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, |
70342287 | 103 | size_t count) |
1da177e4 | 104 | { |
c7b95d51 | 105 | return ksys_readahead(fd, merge_64(a2, a3), count); |
1da177e4 LT |
106 | } |
107 | ||
a8d587a7 RB |
108 | asmlinkage long sys32_sync_file_range(int fd, int __pad, |
109 | unsigned long a2, unsigned long a3, | |
110 | unsigned long a4, unsigned long a5, | |
111 | int flags) | |
112 | { | |
806cbae1 | 113 | return ksys_sync_file_range(fd, |
a8d587a7 RB |
114 | merge_64(a2, a3), merge_64(a4, a5), |
115 | flags); | |
116 | } | |
117 | ||
8676d2e0 AN |
118 | asmlinkage long sys32_fadvise64_64(int fd, int __pad, |
119 | unsigned long a2, unsigned long a3, | |
120 | unsigned long a4, unsigned long a5, | |
121 | int flags) | |
122 | { | |
9d5b7c95 | 123 | return ksys_fadvise64_64(fd, |
8676d2e0 AN |
124 | merge_64(a2, a3), merge_64(a4, a5), |
125 | flags); | |
126 | } | |
127 | ||
4dc46775 RB |
128 | asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, |
129 | unsigned offset_a3, unsigned len_a4, unsigned len_a5) | |
130 | { | |
edf292c7 DB |
131 | return ksys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), |
132 | merge_64(len_a4, len_a5)); | |
4dc46775 | 133 | } |