1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* sys_sparc32.c: Conversion between 32bit and 64bit native syscalls. |
3 | * |
4 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
5 | * Copyright (C) 1997, 2007 David S. Miller (davem@davemloft.net) |
6 | * |
7 | * These routines maintain argument size conversion between 32bit and 64bit |
8 | * environment. |
9 | */ |
10 | |
11 | #include <linux/kernel.h> |
12 | #include <linux/sched.h> |
13 | #include <linux/capability.h> |
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> |
20 | #include <linux/smp.h> |
21 | #include <linux/sem.h> |
22 | #include <linux/msg.h> |
23 | #include <linux/shm.h> |
24 | #include <linux/uio.h> |
25 | #include <linux/quota.h> |
26 | #include <linux/poll.h> |
27 | #include <linux/personality.h> |
28 | #include <linux/stat.h> |
29 | #include <linux/filter.h> |
30 | #include <linux/highmem.h> |
31 | #include <linux/highuid.h> |
32 | #include <linux/mman.h> |
33 | #include <linux/ipv6.h> |
34 | #include <linux/in.h> |
35 | #include <linux/icmpv6.h> |
36 | #include <linux/syscalls.h> |
37 | #include <linux/sysctl.h> |
38 | #include <linux/binfmts.h> |
39 | #include <linux/dnotify.h> |
40 | #include <linux/security.h> |
41 | #include <linux/compat.h> |
42 | #include <linux/vfs.h> |
43 | #include <linux/ptrace.h> |
44 | #include <linux/slab.h> |
45 | |
46 | #include <asm/types.h> |
47 | #include <linux/uaccess.h> |
48 | #include <asm/fpumacro.h> |
49 | #include <asm/mmu_context.h> |
50 | #include <asm/compat_signal.h> |
51 | |
52 | #include "systbls.h" |
53 | |
54 | COMPAT_SYSCALL_DEFINE3(truncate64, const char __user *, path, u32, high, u32, low) |
55 | { |
56 | return ksys_truncate(pathname: path, length: ((u64)high << 32) | low); |
57 | } |
58 | |
59 | COMPAT_SYSCALL_DEFINE3(ftruncate64, unsigned int, fd, u32, high, u32, low) |
60 | { |
61 | return ksys_ftruncate(fd, length: ((u64)high << 32) | low); |
62 | } |
63 | |
64 | static int cp_compat_stat64(struct kstat *stat, |
65 | struct compat_stat64 __user *statbuf) |
66 | { |
67 | int err; |
68 | |
69 | err = put_user(huge_encode_dev(stat->dev), &statbuf->st_dev); |
70 | err |= put_user(stat->ino, &statbuf->st_ino); |
71 | err |= put_user(stat->mode, &statbuf->st_mode); |
72 | err |= put_user(stat->nlink, &statbuf->st_nlink); |
73 | err |= put_user(from_kuid_munged(current_user_ns(), stat->uid), &statbuf->st_uid); |
74 | err |= put_user(from_kgid_munged(current_user_ns(), stat->gid), &statbuf->st_gid); |
75 | err |= put_user(huge_encode_dev(stat->rdev), &statbuf->st_rdev); |
76 | err |= put_user(0, (unsigned long __user *) &statbuf->__pad3[0]); |
77 | err |= put_user(stat->size, &statbuf->st_size); |
78 | err |= put_user(stat->blksize, &statbuf->st_blksize); |
79 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[0]); |
80 | err |= put_user(0, (unsigned int __user *) &statbuf->__pad4[4]); |
81 | err |= put_user(stat->blocks, &statbuf->st_blocks); |
82 | err |= put_user(stat->atime.tv_sec, &statbuf->st_atime); |
83 | err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec); |
84 | err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime); |
85 | err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec); |
86 | err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime); |
87 | err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec); |
88 | err |= put_user(0, &statbuf->__unused4); |
89 | err |= put_user(0, &statbuf->__unused5); |
90 | |
91 | return err; |
92 | } |
93 | |
94 | COMPAT_SYSCALL_DEFINE2(stat64, const char __user *, filename, |
95 | struct compat_stat64 __user *, statbuf) |
96 | { |
97 | struct kstat stat; |
98 | int error = vfs_stat(filename, stat: &stat); |
99 | |
100 | if (!error) |
101 | error = cp_compat_stat64(stat: &stat, statbuf); |
102 | return error; |
103 | } |
104 | |
105 | COMPAT_SYSCALL_DEFINE2(lstat64, const char __user *, filename, |
106 | struct compat_stat64 __user *, statbuf) |
107 | { |
108 | struct kstat stat; |
109 | int error = vfs_lstat(name: filename, stat: &stat); |
110 | |
111 | if (!error) |
112 | error = cp_compat_stat64(stat: &stat, statbuf); |
113 | return error; |
114 | } |
115 | |
116 | COMPAT_SYSCALL_DEFINE2(fstat64, unsigned int, fd, |
117 | struct compat_stat64 __user *, statbuf) |
118 | { |
119 | struct kstat stat; |
120 | int error = vfs_fstat(fd, stat: &stat); |
121 | |
122 | if (!error) |
123 | error = cp_compat_stat64(stat: &stat, statbuf); |
124 | return error; |
125 | } |
126 | |
127 | COMPAT_SYSCALL_DEFINE4(fstatat64, unsigned int, dfd, |
128 | const char __user *, filename, |
129 | struct compat_stat64 __user *, statbuf, int, flag) |
130 | { |
131 | struct kstat stat; |
132 | int error; |
133 | |
134 | error = vfs_fstatat(dfd, filename, stat: &stat, flags: flag); |
135 | if (error) |
136 | return error; |
137 | return cp_compat_stat64(stat: &stat, statbuf); |
138 | } |
139 | |
140 | COMPAT_SYSCALL_DEFINE3(sparc_sigaction, int, sig, |
141 | struct compat_old_sigaction __user *,act, |
142 | struct compat_old_sigaction __user *,oact) |
143 | { |
144 | WARN_ON_ONCE(sig >= 0); |
145 | return compat_sys_sigaction(-sig, act, oact); |
146 | } |
147 | |
148 | COMPAT_SYSCALL_DEFINE5(rt_sigaction, int, sig, |
149 | struct compat_sigaction __user *,act, |
150 | struct compat_sigaction __user *,oact, |
151 | void __user *,restorer, |
152 | compat_size_t,sigsetsize) |
153 | { |
154 | struct k_sigaction new_ka, old_ka; |
155 | int ret; |
156 | |
157 | /* XXX: Don't preclude handling different sized sigset_t's. */ |
158 | if (sigsetsize != sizeof(compat_sigset_t)) |
159 | return -EINVAL; |
160 | |
161 | if (act) { |
162 | u32 u_handler, u_restorer; |
163 | |
164 | new_ka.ka_restorer = restorer; |
165 | ret = get_user(u_handler, &act->sa_handler); |
166 | new_ka.sa.sa_handler = compat_ptr(uptr: u_handler); |
167 | ret |= get_compat_sigset(set: &new_ka.sa.sa_mask, compat: &act->sa_mask); |
168 | ret |= get_user(new_ka.sa.sa_flags, &act->sa_flags); |
169 | ret |= get_user(u_restorer, &act->sa_restorer); |
170 | new_ka.sa.sa_restorer = compat_ptr(uptr: u_restorer); |
171 | if (ret) |
172 | return -EFAULT; |
173 | } |
174 | |
175 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
176 | |
177 | if (!ret && oact) { |
178 | ret = put_user(ptr_to_compat(old_ka.sa.sa_handler), &oact->sa_handler); |
179 | ret |= put_compat_sigset(compat: &oact->sa_mask, set: &old_ka.sa.sa_mask, |
180 | size: sizeof(oact->sa_mask)); |
181 | ret |= put_user(old_ka.sa.sa_flags, &oact->sa_flags); |
182 | ret |= put_user(ptr_to_compat(old_ka.sa.sa_restorer), &oact->sa_restorer); |
183 | if (ret) |
184 | ret = -EFAULT; |
185 | } |
186 | |
187 | return ret; |
188 | } |
189 | |
190 | COMPAT_SYSCALL_DEFINE5(pread64, unsigned int, fd, char __user *, ubuf, |
191 | compat_size_t, count, u32, poshi, u32, poslo) |
192 | { |
193 | return ksys_pread64(fd, buf: ubuf, count, pos: ((u64)poshi << 32) | poslo); |
194 | } |
195 | |
196 | COMPAT_SYSCALL_DEFINE5(pwrite64, unsigned int, fd, char __user *, ubuf, |
197 | compat_size_t, count, u32, poshi, u32, poslo) |
198 | { |
199 | return ksys_pwrite64(fd, buf: ubuf, count, pos: ((u64)poshi << 32) | poslo); |
200 | } |
201 | |
202 | COMPAT_SYSCALL_DEFINE4(readahead, int, fd, u32, offhi, u32, offlo, |
203 | compat_size_t, count) |
204 | { |
205 | return ksys_readahead(fd, offset: ((u64)offhi << 32) | offlo, count); |
206 | } |
207 | |
208 | COMPAT_SYSCALL_DEFINE5(fadvise64, int, fd, u32, offhi, u32, offlo, |
209 | compat_size_t, len, int, advice) |
210 | { |
211 | return ksys_fadvise64_64(fd, offset: ((u64)offhi << 32) | offlo, len, advice); |
212 | } |
213 | |
214 | COMPAT_SYSCALL_DEFINE6(fadvise64_64, int, fd, u32, offhi, u32, offlo, |
215 | u32, lenhi, u32, lenlo, int, advice) |
216 | { |
217 | return ksys_fadvise64_64(fd, |
218 | offset: ((u64)offhi << 32) | offlo, |
219 | len: ((u64)lenhi << 32) | lenlo, |
220 | advice); |
221 | } |
222 | |
223 | COMPAT_SYSCALL_DEFINE6(sync_file_range, unsigned int, fd, u32, off_high, u32, off_low, |
224 | u32, nb_high, u32, nb_low, unsigned int, flags) |
225 | { |
226 | return ksys_sync_file_range(fd, |
227 | offset: ((u64)off_high << 32) | off_low, |
228 | nbytes: ((u64)nb_high << 32) | nb_low, |
229 | flags); |
230 | } |
231 | |
232 | COMPAT_SYSCALL_DEFINE6(fallocate, int, fd, int, mode, u32, offhi, u32, offlo, |
233 | u32, lenhi, u32, lenlo) |
234 | { |
235 | return ksys_fallocate(fd, mode, offset: ((loff_t)offhi << 32) | offlo, |
236 | len: ((loff_t)lenhi << 32) | lenlo); |
237 | } |
238 | |