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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
bc5a2e64 | 2 | /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. |
1da177e4 LT |
3 | * |
4 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) | |
bc5a2e64 | 5 | * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net) |
1da177e4 LT |
6 | * |
7 | * These routines maintain argument size conversion between 32bit and 64bit | |
8 | * environment. | |
9 | */ | |
10 | ||
1da177e4 LT |
11 | #include <linux/kernel.h> |
12 | #include <linux/sched.h> | |
a9415644 | 13 | #include <linux/capability.h> |
1da177e4 LT |
14 | #include <linux/fs.h> |
15 | #include <linux/mm.h> | |
16 | #include <linux/file.h> | |
17 | #include <linux/signal.h> | |
18 | #include <linux/resource.h> | |
19 | #include <linux/times.h> | |
1da177e4 | 20 | #include <linux/smp.h> |
1da177e4 LT |
21 | #include <linux/sem.h> |
22 | #include <linux/msg.h> | |
23 | #include <linux/shm.h> | |
1da177e4 LT |
24 | #include <linux/uio.h> |
25 | #include <linux/nfs_fs.h> | |
26 | #include <linux/quota.h> | |
1da177e4 LT |
27 | #include <linux/poll.h> |
28 | #include <linux/personality.h> | |
29 | #include <linux/stat.h> | |
30 | #include <linux/filter.h> | |
31 | #include <linux/highmem.h> | |
32 | #include <linux/highuid.h> | |
33 | #include <linux/mman.h> | |
34 | #include <linux/ipv6.h> | |
35 | #include <linux/in.h> | |
36 | #include <linux/icmpv6.h> | |
37 | #include <linux/syscalls.h> | |
38 | #include <linux/sysctl.h> | |
39 | #include <linux/binfmts.h> | |
40 | #include <linux/dnotify.h> | |
41 | #include <linux/security.h> | |
42 | #include <linux/compat.h> | |
43 | #include <linux/vfs.h> | |
1da177e4 | 44 | #include <linux/ptrace.h> |
5a0e3ad6 | 45 | #include <linux/slab.h> |
1da177e4 LT |
46 | |
47 | #include <asm/types.h> | |
7c0f6ba6 | 48 | #include <linux/uaccess.h> |
1da177e4 | 49 | #include <asm/fpumacro.h> |
1da177e4 | 50 | #include <asm/mmu_context.h> |
14cc6aba | 51 | #include <asm/compat_signal.h> |
1da177e4 | 52 | |
ed8eb755 SR |
53 | #include "systbls.h" |
54 | ||
1da177e4 LT |
55 | asmlinkage long sys32_truncate64(const char __user * path, unsigned long high, unsigned long low) |
56 | { | |
57 | if ((int)high < 0) | |
58 | return -EINVAL; | |
59 | else | |
60 | return sys_truncate(path, (high << 32) | low); | |
61 | } | |
62 | ||
63 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long high, unsigned long low) | |
64 | { | |
65 | if ((int)high < 0) | |
66 | return -EINVAL; | |
67 | else | |
411d9475 | 68 | return ksys_ftruncate(fd, (high << 32) | low); |
1da177e4 LT |
69 | } |
70 | ||
908f5162 AB |
71 | static int cp_compat_stat64(struct kstat *stat, |
72 | struct compat_stat64 __user *statbuf) | |
0ba4da03 DM |
73 | { |
74 | int err; | |
75 | ||
76 | err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev); | |
77 | err |= put_user(stat->ino, &statbuf->st_ino); | |
78 | err |= put_user(stat->mode, &statbuf->st_mode); | |
79 | err |= put_user(stat->nlink, &statbuf->st_nlink); | |
a7c1938e EB |
80 | err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid); |
81 | err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid); | |
0ba4da03 DM |
82 | err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev); |
83 | err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); | |
84 | err |= put_user(stat->size, &statbuf->st_size); | |
85 | err |= put_user(stat->blksize, &statbuf->st_blksize); | |
86 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); | |
87 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); | |
88 | err |= put_user(stat->blocks, &statbuf->st_blocks); | |
89 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); | |
90 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); | |
91 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); | |
92 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); | |
93 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); | |
94 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); | |
95 | err |= put_user(0, &statbuf->__unused4); | |
96 | err |= put_user(0, &statbuf->__unused5); | |
97 | ||
98 | return err; | |
99 | } | |
100 | ||
c7887325 | 101 | asmlinkage long compat_sys_stat64(const char __user * filename, |
0ba4da03 DM |
102 | struct compat_stat64 __user *statbuf) |
103 | { | |
104 | struct kstat stat; | |
105 | int error = vfs_stat(filename, &stat); | |
106 | ||
107 | if (!error) | |
108 | error = cp_compat_stat64(&stat, statbuf); | |
109 | return error; | |
110 | } | |
111 | ||
c7887325 | 112 | asmlinkage long compat_sys_lstat64(const char __user * filename, |
0ba4da03 DM |
113 | struct compat_stat64 __user *statbuf) |
114 | { | |
115 | struct kstat stat; | |
116 | int error = vfs_lstat(filename, &stat); | |
117 | ||
118 | if (!error) | |
119 | error = cp_compat_stat64(&stat, statbuf); | |
120 | return error; | |
121 | } | |
122 | ||
123 | asmlinkage long compat_sys_fstat64(unsigned int fd, | |
124 | struct compat_stat64 __user * statbuf) | |
125 | { | |
126 | struct kstat stat; | |
127 | int error = vfs_fstat(fd, &stat); | |
128 | ||
129 | if (!error) | |
130 | error = cp_compat_stat64(&stat, statbuf); | |
131 | return error; | |
132 | } | |
133 | ||
c7887325 DH |
134 | asmlinkage long compat_sys_fstatat64(unsigned int dfd, |
135 | const char __user *filename, | |
40ad7a6a DM |
136 | struct compat_stat64 __user * statbuf, int flag) |
137 | { | |
138 | struct kstat stat; | |
0112fc22 | 139 | int error; |
40ad7a6a | 140 | |
0112fc22 OD |
141 | error = vfs_fstatat(dfd, filename, &stat, flag); |
142 | if (error) | |
143 | return error; | |
144 | return cp_compat_stat64(&stat, statbuf); | |
40ad7a6a DM |
145 | } |
146 | ||
a274bd49 AV |
147 | COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig, |
148 | struct compat_old_sigaction __user *,act, | |
149 | struct compat_old_sigaction __user *,oact) | |
1da177e4 | 150 | { |
5526b7e4 | 151 | WARN_ON_ONCE(sig >= 0); |
a274bd49 | 152 | return compat_sys_sigaction(-sig, act, oact); |
1da177e4 LT |
153 | } |
154 | ||
bdc40abf AV |
155 | COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig, |
156 | struct compat_sigaction __user *,act, | |
157 | struct compat_sigaction __user *,oact, | |
158 | void __user *,restorer, | |
159 | compat_size_t,sigsetsize) | |
1da177e4 LT |
160 | { |
161 | struct k_sigaction new_ka, old_ka; | |
162 | int ret; | |
1da177e4 LT |
163 | |
164 | /* XXX: Don't preclude handling different sized sigset_t's. */ | |
165 | if (sigsetsize != sizeof(compat_sigset_t)) | |
166 | return -EINVAL; | |
167 | ||
1da177e4 LT |
168 | if (act) { |
169 | u32 u_handler, u_restorer; | |
170 | ||
171 | new_ka.ka_restorer = restorer; | |
172 | ret = get_user(u_handler, &act->sa_handler); | |
173 | new_ka.sa.sa_handler = compat_ptr(u_handler); | |
3968cf62 | 174 | ret |= get_compat_sigset(&new_ka.sa.sa_mask, &act->sa_mask); |
3ddc5b46 MD |
175 | ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags); |
176 | ret |= get_user(u_restorer, &act->sa_restorer); | |
1da177e4 LT |
177 | new_ka.sa.sa_restorer = compat_ptr(u_restorer); |
178 | if (ret) | |
179 | return -EFAULT; | |
180 | } | |
181 | ||
182 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); | |
183 | ||
184 | if (!ret && oact) { | |
1da177e4 | 185 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); |
f454322e DL |
186 | ret |= put_compat_sigset(&oact->sa_mask, &old_ka.sa.sa_mask, |
187 | sizeof(oact->sa_mask)); | |
3ddc5b46 MD |
188 | ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags); |
189 | ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); | |
1da177e4 LT |
190 | if (ret) |
191 | ret = -EFAULT; | |
192 | } | |
193 | ||
194 | return ret; | |
195 | } | |
196 | ||
1da177e4 LT |
197 | asmlinkage compat_ssize_t sys32_pread64(unsigned int fd, |
198 | char __user *ubuf, | |
199 | compat_size_t count, | |
200 | unsigned long poshi, | |
201 | unsigned long poslo) | |
202 | { | |
203 | return sys_pread64(fd, ubuf, count, (poshi << 32) | poslo); | |
204 | } | |
205 | ||
206 | asmlinkage compat_ssize_t sys32_pwrite64(unsigned int fd, | |
207 | char __user *ubuf, | |
208 | compat_size_t count, | |
209 | unsigned long poshi, | |
210 | unsigned long poslo) | |
211 | { | |
212 | return sys_pwrite64(fd, ubuf, count, (poshi << 32) | poslo); | |
213 | } | |
214 | ||
215 | asmlinkage long compat_sys_readahead(int fd, | |
216 | unsigned long offhi, | |
217 | unsigned long offlo, | |
218 | compat_size_t count) | |
219 | { | |
220 | return sys_readahead(fd, (offhi << 32) | offlo, count); | |
221 | } | |
222 | ||
223 | long compat_sys_fadvise64(int fd, | |
224 | unsigned long offhi, | |
225 | unsigned long offlo, | |
226 | compat_size_t len, int advice) | |
227 | { | |
228 | return sys_fadvise64_64(fd, (offhi << 32) | offlo, len, advice); | |
229 | } | |
230 | ||
231 | long compat_sys_fadvise64_64(int fd, | |
232 | unsigned long offhi, unsigned long offlo, | |
233 | unsigned long lenhi, unsigned long lenlo, | |
234 | int advice) | |
235 | { | |
236 | return sys_fadvise64_64(fd, | |
237 | (offhi << 32) | offlo, | |
238 | (lenhi << 32) | lenlo, | |
239 | advice); | |
240 | } | |
241 | ||
2ae80c43 | 242 | long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned long off_low, unsigned long nb_high, unsigned long nb_low, unsigned int flags) |
289eee6f DM |
243 | { |
244 | return sys_sync_file_range(fd, | |
245 | (off_high << 32) | off_low, | |
246 | (nb_high << 32) | nb_low, | |
247 | flags); | |
248 | } | |
bc5a2e64 DM |
249 | |
250 | asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, | |
251 | u32 lenhi, u32 lenlo) | |
252 | { | |
253 | return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, | |
254 | ((loff_t)lenhi << 32) | lenlo); | |
255 | } |