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7#include <linux/compiler.h>
8#include <linux/mm.h>
9#include <linux/errno.h>
10#include <linux/file.h>
11#include <linux/highuid.h>
12#include <linux/resource.h>
13#include <linux/highmem.h>
14#include <linux/time.h>
15#include <linux/times.h>
16#include <linux/poll.h>
17#include <linux/skbuff.h>
18#include <linux/filter.h>
19#include <linux/shm.h>
20#include <linux/sem.h>
21#include <linux/msg.h>
22#include <linux/icmpv6.h>
23#include <linux/syscalls.h>
24#include <linux/sysctl.h>
25#include <linux/utime.h>
26#include <linux/utsname.h>
27#include <linux/personality.h>
28#include <linux/dnotify.h>
29#include <linux/module.h>
30#include <linux/binfmts.h>
31#include <linux/security.h>
32#include <linux/compat.h>
33#include <linux/vfs.h>
34#include <linux/ipc.h>
35#include <linux/slab.h>
36
37#include <net/sock.h>
38#include <net/scm.h>
39
40#include <asm/compat-signal.h>
41#include <asm/sim.h>
42#include <asm/uaccess.h>
43#include <asm/mmu_context.h>
44#include <asm/mman.h>
45
46
47
48
49
50
51
52
53
54#define A(__x) ((unsigned long)(__x))
55#define AA(__x) ((unsigned long)((int)__x))
56
57#ifdef __MIPSEB__
58#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
59#endif
60#ifdef __MIPSEL__
61#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
62#endif
63
64SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len,
65 unsigned long, prot, unsigned long, flags, unsigned long, fd,
66 unsigned long, pgoff)
67{
68 unsigned long error;
69
70 error = -EINVAL;
71 if (pgoff & (~PAGE_MASK >> 12))
72 goto out;
73 error = sys_mmap_pgoff(addr, len, prot, flags, fd,
74 pgoff >> (PAGE_SHIFT-12));
75out:
76 return error;
77}
78
79#define RLIM_INFINITY32 0x7fffffff
80#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
81
82struct rlimit32 {
83 int rlim_cur;
84 int rlim_max;
85};
86
87SYSCALL_DEFINE4(32_truncate64, const char __user *, path,
88 unsigned long, __dummy, unsigned long, a2, unsigned long, a3)
89{
90 return sys_truncate(path, merge_64(a2, a3));
91}
92
93SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy,
94 unsigned long, a2, unsigned long, a3)
95{
96 return sys_ftruncate(fd, merge_64(a2, a3));
97}
98
99SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
100 unsigned int, offset_low, loff_t __user *, result,
101 unsigned int, origin)
102{
103 return sys_llseek(fd, offset_high, offset_low, result, origin);
104}
105
106
107
108
109
110SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
111 unsigned long, unused, unsigned long, a4, unsigned long, a5)
112{
113 return sys_pread64(fd, buf, count, merge_64(a4, a5));
114}
115
116SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
117 size_t, count, u32, unused, u64, a4, u64, a5)
118{
119 return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
120}
121
122#ifdef CONFIG_SYSVIPC
123
124SYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third,
125 unsigned long, ptr, unsigned long, fifth)
126{
127 int version, err;
128
129 version = call >> 16;
130 call &= 0xffff;
131
132 switch (call) {
133 case SEMOP:
134
135 err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
136 break;
137 case SEMTIMEDOP:
138 err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
139 compat_ptr(fifth));
140 break;
141 case SEMGET:
142 err = sys_semget(first, second, third);
143 break;
144 case SEMCTL:
145 err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
146 break;
147 case MSGSND:
148 err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
149 break;
150 case MSGRCV:
151 err = compat_sys_msgrcv(first, second, fifth, third,
152 version, compat_ptr(ptr));
153 break;
154 case MSGGET:
155 err = sys_msgget((key_t) first, second);
156 break;
157 case MSGCTL:
158 err = compat_sys_msgctl(first, second, compat_ptr(ptr));
159 break;
160 case SHMAT:
161 err = compat_sys_shmat(first, second, third, version,
162 compat_ptr(ptr));
163 break;
164 case SHMDT:
165 err = sys_shmdt(compat_ptr(ptr));
166 break;
167 case SHMGET:
168 err = sys_shmget(first, (unsigned)second, third);
169 break;
170 case SHMCTL:
171 err = compat_sys_shmctl(first, second, compat_ptr(ptr));
172 break;
173 default:
174 err = -ENOSYS;
175 break;
176 }
177
178 return err;
179}
180
181#else
182
183SYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third,
184 u32, ptr, u32, fifth)
185{
186 return -ENOSYS;
187}
188
189#endif
190
191#ifdef CONFIG_MIPS32_N32
192SYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg)
193{
194
195 u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
196 if (put_user(arg, uptr))
197 return -EFAULT;
198 return compat_sys_semctl(semid, semnum, cmd, uptr);
199}
200
201SYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz,
202 int, msgflg)
203{
204 return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
205}
206
207SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz,
208 int, msgtyp, int, msgflg)
209{
210 return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
211 compat_ptr(msgp));
212}
213#endif
214
215SYSCALL_DEFINE1(32_personality, unsigned long, personality)
216{
217 unsigned int p = personality & 0xffffffff;
218 int ret;
219
220 if (personality(current->personality) == PER_LINUX32 &&
221 personality(p) == PER_LINUX)
222 p = (p & ~PER_MASK) | PER_LINUX32;
223 ret = sys_personality(p);
224 if (ret != -1 && personality(ret) == PER_LINUX32)
225 ret = (ret & ~PER_MASK) | PER_LINUX;
226 return ret;
227}
228
229SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd,
230 compat_off_t __user *, offset, s32, count)
231{
232 mm_segment_t old_fs = get_fs();
233 int ret;
234 off_t of;
235
236 if (offset && get_user(of, offset))
237 return -EFAULT;
238
239 set_fs(KERNEL_DS);
240 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
241 set_fs(old_fs);
242
243 if (offset && put_user(of, offset))
244 return -EFAULT;
245
246 return ret;
247}
248
249asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
250 size_t count)
251{
252 return sys_readahead(fd, merge_64(a2, a3), count);
253}
254
255asmlinkage long sys32_sync_file_range(int fd, int __pad,
256 unsigned long a2, unsigned long a3,
257 unsigned long a4, unsigned long a5,
258 int flags)
259{
260 return sys_sync_file_range(fd,
261 merge_64(a2, a3), merge_64(a4, a5),
262 flags);
263}
264
265asmlinkage long sys32_fadvise64_64(int fd, int __pad,
266 unsigned long a2, unsigned long a3,
267 unsigned long a4, unsigned long a5,
268 int flags)
269{
270 return sys_fadvise64_64(fd,
271 merge_64(a2, a3), merge_64(a4, a5),
272 flags);
273}
274
275asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
276 unsigned offset_a3, unsigned len_a4, unsigned len_a5)
277{
278 return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
279 merge_64(len_a4, len_a5));
280}
281
282asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
283 size_t len)
284{
285 return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
286}
287
288SYSCALL_DEFINE6(32_fanotify_mark, int, fanotify_fd, unsigned int, flags,
289 u64, a3, u64, a4, int, dfd, const char __user *, pathname)
290{
291 return sys_fanotify_mark(fanotify_fd, flags, merge_64(a3, a4),
292 dfd, pathname);
293}
294
