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8#include <linux/compiler.h>
9#include <linux/mm.h>
10#include <linux/errno.h>
11#include <linux/file.h>
12#include <linux/highuid.h>
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>
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>
29#include <linux/dnotify.h>
30#include <linux/module.h>
31#include <linux/binfmts.h>
32#include <linux/security.h>
33#include <linux/compat.h>
34#include <linux/vfs.h>
35#include <linux/ipc.h>
36#include <linux/slab.h>
37
38#include <net/sock.h>
39#include <net/scm.h>
40
41#include <asm/compat-signal.h>
42#include <asm/sim.h>
43#include <asm/uaccess.h>
44#include <asm/mmu_context.h>
45#include <asm/mman.h>
46
47
48
49
50
51
52
53
54
55#define A(__x) ((unsigned long)(__x))
56#define AA(__x) ((unsigned long)((int)__x))
57
58#ifdef __MIPSEB__
59#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
60#endif
61#ifdef __MIPSEL__
62#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
63#endif
64
65SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len,
66 unsigned long, prot, unsigned long, flags, unsigned long, fd,
67 unsigned long, pgoff)
68{
69 unsigned long error;
70
71 error = -EINVAL;
72 if (pgoff & (~PAGE_MASK >> 12))
73 goto out;
74 error = sys_mmap_pgoff(addr, len, prot, flags, fd,
75 pgoff >> (PAGE_SHIFT-12));
76out:
77 return error;
78}
79
80
81
82
83asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
84{
85 int error;
86 char * filename;
87
88 filename = getname(compat_ptr(regs.regs[4]));
89 error = PTR_ERR(filename);
90 if (IS_ERR(filename))
91 goto out;
92 error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
93 compat_ptr(regs.regs[6]), ®s);
94 putname(filename);
95
96out:
97 return error;
98}
99
100#define RLIM_INFINITY32 0x7fffffff
101#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
102
103struct rlimit32 {
104 int rlim_cur;
105 int rlim_max;
106};
107
108SYSCALL_DEFINE4(32_truncate64, const char __user *, path,
109 unsigned long, __dummy, unsigned long, a2, unsigned long, a3)
110{
111 return sys_truncate(path, merge_64(a2, a3));
112}
113
114SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy,
115 unsigned long, a2, unsigned long, a3)
116{
117 return sys_ftruncate(fd, merge_64(a2, a3));
118}
119
120SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
121 unsigned int, offset_low, loff_t __user *, result,
122 unsigned int, origin)
123{
124 return sys_llseek(fd, offset_high, offset_low, result, origin);
125}
126
127
128
129
130
131SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
132 unsigned long, unused, unsigned long, a4, unsigned long, a5)
133{
134 return sys_pread64(fd, buf, count, merge_64(a4, a5));
135}
136
137SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
138 size_t, count, u32, unused, u64, a4, u64, a5)
139{
140 return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
141}
142
143SYSCALL_DEFINE2(32_sched_rr_get_interval, compat_pid_t, pid,
144 struct compat_timespec __user *, interval)
145{
146 struct timespec t;
147 int ret;
148 mm_segment_t old_fs = get_fs();
149
150 set_fs(KERNEL_DS);
151 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
152 set_fs(old_fs);
153 if (put_user (t.tv_sec, &interval->tv_sec) ||
154 __put_user(t.tv_nsec, &interval->tv_nsec))
155 return -EFAULT;
156 return ret;
157}
158
159#ifdef CONFIG_SYSVIPC
160
161SYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third,
162 unsigned long, ptr, unsigned long, fifth)
163{
164 int version, err;
165
166 version = call >> 16;
167 call &= 0xffff;
168
169 switch (call) {
170 case SEMOP:
171
172 err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
173 break;
174 case SEMTIMEDOP:
175 err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
176 compat_ptr(fifth));
177 break;
178 case SEMGET:
179 err = sys_semget(first, second, third);
180 break;
181 case SEMCTL:
182 err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
183 break;
184 case MSGSND:
185 err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
186 break;
187 case MSGRCV:
188 err = compat_sys_msgrcv(first, second, fifth, third,
189 version, compat_ptr(ptr));
190 break;
191 case MSGGET:
192 err = sys_msgget((key_t) first, second);
193 break;
194 case MSGCTL:
195 err = compat_sys_msgctl(first, second, compat_ptr(ptr));
196 break;
197 case SHMAT:
198 err = compat_sys_shmat(first, second, third, version,
199 compat_ptr(ptr));
200 break;
201 case SHMDT:
202 err = sys_shmdt(compat_ptr(ptr));
203 break;
204 case SHMGET:
205 err = sys_shmget(first, (unsigned)second, third);
206 break;
207 case SHMCTL:
208 err = compat_sys_shmctl(first, second, compat_ptr(ptr));
209 break;
210 default:
211 err = -EINVAL;
212 break;
213 }
214
215 return err;
216}
217
218#else
219
220SYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third,
221 u32, ptr, u32, fifth)
222{
223 return -ENOSYS;
224}
225
226#endif
227
228#ifdef CONFIG_MIPS32_N32
229SYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg)
230{
231
232 u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
233 if (put_user(arg, uptr))
234 return -EFAULT;
235 return compat_sys_semctl(semid, semnum, cmd, uptr);
236}
237
238SYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz,
239 int, msgflg)
240{
241 return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
242}
243
244SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz,
245 int, msgtyp, int, msgflg)
246{
247 return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
248 compat_ptr(msgp));
249}
250#endif
251
252SYSCALL_DEFINE1(32_personality, unsigned long, personality)
253{
254 unsigned int p = personality & 0xffffffff;
255 int ret;
256
257 if (personality(current->personality) == PER_LINUX32 &&
258 personality(p) == PER_LINUX)
259 p = (p & ~PER_MASK) | PER_LINUX32;
260 ret = sys_personality(p);
261 if (ret != -1 && personality(ret) == PER_LINUX32)
262 ret = (ret & ~PER_MASK) | PER_LINUX;
263 return ret;
264}
265
266SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd,
267 compat_off_t __user *, offset, s32, count)
268{
269 mm_segment_t old_fs = get_fs();
270 int ret;
271 off_t of;
272
273 if (offset && get_user(of, offset))
274 return -EFAULT;
275
276 set_fs(KERNEL_DS);
277 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
278 set_fs(old_fs);
279
280 if (offset && put_user(of, offset))
281 return -EFAULT;
282
283 return ret;
284}
285
286asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
287 size_t count)
288{
289 return sys_readahead(fd, merge_64(a2, a3), count);
290}
291
292asmlinkage long sys32_sync_file_range(int fd, int __pad,
293 unsigned long a2, unsigned long a3,
294 unsigned long a4, unsigned long a5,
295 int flags)
296{
297 return sys_sync_file_range(fd,
298 merge_64(a2, a3), merge_64(a4, a5),
299 flags);
300}
301
302asmlinkage long sys32_fadvise64_64(int fd, int __pad,
303 unsigned long a2, unsigned long a3,
304 unsigned long a4, unsigned long a5,
305 int flags)
306{
307 return sys_fadvise64_64(fd,
308 merge_64(a2, a3), merge_64(a4, a5),
309 flags);
310}
311
312asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
313 unsigned offset_a3, unsigned len_a4, unsigned len_a5)
314{
315 return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
316 merge_64(len_a4, len_a5));
317}
318
319save_static_function(sys32_clone);
320static int noinline __used
321_sys32_clone(nabi_no_regargs struct pt_regs regs)
322{
323 unsigned long clone_flags;
324 unsigned long newsp;
325 int __user *parent_tidptr, *child_tidptr;
326
327 clone_flags = regs.regs[4];
328 newsp = regs.regs[5];
329 if (!newsp)
330 newsp = regs.regs[29];
331 parent_tidptr = (int __user *) regs.regs[6];
332
333
334
335 child_tidptr = (int __user *) __dummy4;
336 return do_fork(clone_flags, newsp, ®s, 0,
337 parent_tidptr, child_tidptr);
338}
339
340asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
341 size_t len)
342{
343 return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
344}
345
346SYSCALL_DEFINE6(32_fanotify_mark, int, fanotify_fd, unsigned int, flags,
347 u64, a3, u64, a4, int, dfd, const char __user *, pathname)
348{
349 return sys_fanotify_mark(fanotify_fd, flags, merge_64(a3, a4),
350 dfd, pathname);
351}
352
