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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/smp_lock.h>
13#include <linux/highuid.h>
14#include <linux/resource.h>
15#include <linux/highmem.h>
16#include <linux/time.h>
17#include <linux/times.h>
18#include <linux/poll.h>
19#include <linux/slab.h>
20#include <linux/skbuff.h>
21#include <linux/filter.h>
22#include <linux/shm.h>
23#include <linux/sem.h>
24#include <linux/msg.h>
25#include <linux/icmpv6.h>
26#include <linux/syscalls.h>
27#include <linux/sysctl.h>
28#include <linux/utime.h>
29#include <linux/utsname.h>
30#include <linux/personality.h>
31#include <linux/dnotify.h>
32#include <linux/module.h>
33#include <linux/binfmts.h>
34#include <linux/security.h>
35#include <linux/compat.h>
36#include <linux/vfs.h>
37#include <linux/ipc.h>
38
39#include <net/sock.h>
40#include <net/scm.h>
41
42#include <asm/compat-signal.h>
43#include <asm/sim.h>
44#include <asm/uaccess.h>
45#include <asm/mmu_context.h>
46#include <asm/mman.h>
47
48
49
50
51
52
53
54
55
56#define A(__x) ((unsigned long)(__x))
57#define AA(__x) ((unsigned long)((int)__x))
58
59#ifdef __MIPSEB__
60#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL))
61#endif
62#ifdef __MIPSEL__
63#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL))
64#endif
65
66SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len,
67 unsigned long, prot, unsigned long, flags, unsigned long, fd,
68 unsigned long, pgoff)
69{
70 struct file * file = NULL;
71 unsigned long error;
72
73 error = -EINVAL;
74 if (pgoff & (~PAGE_MASK >> 12))
75 goto out;
76 pgoff >>= PAGE_SHIFT-12;
77
78 if (!(flags & MAP_ANONYMOUS)) {
79 error = -EBADF;
80 file = fget(fd);
81 if (!file)
82 goto out;
83 }
84 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
85
86 down_write(¤t->mm->mmap_sem);
87 error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
88 up_write(¤t->mm->mmap_sem);
89 if (file)
90 fput(file);
91
92out:
93 return error;
94}
95
96
97
98
99asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs)
100{
101 int error;
102 char * filename;
103
104 filename = getname(compat_ptr(regs.regs[4]));
105 error = PTR_ERR(filename);
106 if (IS_ERR(filename))
107 goto out;
108 error = compat_do_execve(filename, compat_ptr(regs.regs[5]),
109 compat_ptr(regs.regs[6]), ®s);
110 putname(filename);
111
112out:
113 return error;
114}
115
116#define RLIM_INFINITY32 0x7fffffff
117#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
118
119struct rlimit32 {
120 int rlim_cur;
121 int rlim_max;
122};
123
124SYSCALL_DEFINE4(32_truncate64, const char __user *, path,
125 unsigned long, __dummy, unsigned long, a2, unsigned long, a3)
126{
127 return sys_truncate(path, merge_64(a2, a3));
128}
129
130SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy,
131 unsigned long, a2, unsigned long, a3)
132{
133 return sys_ftruncate(fd, merge_64(a2, a3));
134}
135
136SYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high,
137 unsigned int, offset_low, loff_t __user *, result,
138 unsigned int, origin)
139{
140 return sys_llseek(fd, offset_high, offset_low, result, origin);
141}
142
143
144
145
146
147SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count,
148 unsigned long, unused, unsigned long, a4, unsigned long, a5)
149{
150 return sys_pread64(fd, buf, count, merge_64(a4, a5));
151}
152
153SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf,
154 size_t, count, u32, unused, u64, a4, u64, a5)
155{
156 return sys_pwrite64(fd, buf, count, merge_64(a4, a5));
157}
158
159SYSCALL_DEFINE2(32_sched_rr_get_interval, compat_pid_t, pid,
160 struct compat_timespec __user *, interval)
161{
162 struct timespec t;
163 int ret;
164 mm_segment_t old_fs = get_fs();
165
166 set_fs(KERNEL_DS);
167 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
168 set_fs(old_fs);
169 if (put_user (t.tv_sec, &interval->tv_sec) ||
170 __put_user(t.tv_nsec, &interval->tv_nsec))
171 return -EFAULT;
172 return ret;
173}
174
175#ifdef CONFIG_SYSVIPC
176
177SYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third,
178 unsigned long, ptr, unsigned long, fifth)
179{
180 int version, err;
181
182 version = call >> 16;
183 call &= 0xffff;
184
185 switch (call) {
186 case SEMOP:
187
188 err = sys_semtimedop(first, compat_ptr(ptr), second, NULL);
189 break;
190 case SEMTIMEDOP:
191 err = compat_sys_semtimedop(first, compat_ptr(ptr), second,
192 compat_ptr(fifth));
193 break;
194 case SEMGET:
195 err = sys_semget(first, second, third);
196 break;
197 case SEMCTL:
198 err = compat_sys_semctl(first, second, third, compat_ptr(ptr));
199 break;
200 case MSGSND:
201 err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
202 break;
203 case MSGRCV:
204 err = compat_sys_msgrcv(first, second, fifth, third,
205 version, compat_ptr(ptr));
206 break;
207 case MSGGET:
208 err = sys_msgget((key_t) first, second);
209 break;
210 case MSGCTL:
211 err = compat_sys_msgctl(first, second, compat_ptr(ptr));
212 break;
213 case SHMAT:
214 err = compat_sys_shmat(first, second, third, version,
215 compat_ptr(ptr));
216 break;
217 case SHMDT:
218 err = sys_shmdt(compat_ptr(ptr));
219 break;
220 case SHMGET:
221 err = sys_shmget(first, (unsigned)second, third);
222 break;
223 case SHMCTL:
224 err = compat_sys_shmctl(first, second, compat_ptr(ptr));
225 break;
226 default:
227 err = -EINVAL;
228 break;
229 }
230
231 return err;
232}
233
234#else
235
236SYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third,
237 u32, ptr, u32, fifth)
238{
239 return -ENOSYS;
240}
241
242#endif
243
244#ifdef CONFIG_MIPS32_N32
245SYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg)
246{
247
248 u32 __user *uptr = compat_alloc_user_space(sizeof(u32));
249 if (put_user(arg, uptr))
250 return -EFAULT;
251 return compat_sys_semctl(semid, semnum, cmd, uptr);
252}
253
254SYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz,
255 int, msgflg)
256{
257 return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
258}
259
260SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz,
261 int, msgtyp, int, msgflg)
262{
263 return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
264 compat_ptr(msgp));
265}
266#endif
267
268struct sysctl_args32
269{
270 compat_caddr_t name;
271 int nlen;
272 compat_caddr_t oldval;
273 compat_caddr_t oldlenp;
274 compat_caddr_t newval;
275 compat_size_t newlen;
276 unsigned int __unused[4];
277};
278
279#ifdef CONFIG_SYSCTL_SYSCALL
280
281SYSCALL_DEFINE1(32_sysctl, struct sysctl_args32 __user *, args)
282{
283 struct sysctl_args32 tmp;
284 int error;
285 size_t oldlen;
286 size_t __user *oldlenp = NULL;
287 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
288
289 if (copy_from_user(&tmp, args, sizeof(tmp)))
290 return -EFAULT;
291
292 if (tmp.oldval && tmp.oldlenp) {
293
294
295
296
297
298
299 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
300 put_user(oldlen, (size_t __user *)addr))
301 return -EFAULT;
302 oldlenp = (size_t __user *)addr;
303 }
304
305 lock_kernel();
306 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
307 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
308 unlock_kernel();
309 if (oldlenp) {
310 if (!error) {
311 if (get_user(oldlen, (size_t __user *)addr) ||
312 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
313 error = -EFAULT;
314 }
315 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
316 }
317 return error;
318}
319
320#else
321
322SYSCALL_DEFINE1(32_sysctl, struct sysctl_args32 __user *, args)
323{
324 return -ENOSYS;
325}
326
327#endif
328
329SYSCALL_DEFINE1(32_newuname, struct new_utsname __user *, name)
330{
331 int ret = 0;
332
333 down_read(&uts_sem);
334 if (copy_to_user(name, utsname(), sizeof *name))
335 ret = -EFAULT;
336 up_read(&uts_sem);
337
338 if (current->personality == PER_LINUX32 && !ret)
339 if (copy_to_user(name->machine, "mips\0\0\0", 8))
340 ret = -EFAULT;
341
342 return ret;
343}
344
345SYSCALL_DEFINE1(32_personality, unsigned long, personality)
346{
347 int ret;
348 personality &= 0xffffffff;
349 if (personality(current->personality) == PER_LINUX32 &&
350 personality == PER_LINUX)
351 personality = PER_LINUX32;
352 ret = sys_personality(personality);
353 if (ret == PER_LINUX32)
354 ret = PER_LINUX;
355 return ret;
356}
357
358SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd,
359 compat_off_t __user *, offset, s32, count)
360{
361 mm_segment_t old_fs = get_fs();
362 int ret;
363 off_t of;
364
365 if (offset && get_user(of, offset))
366 return -EFAULT;
367
368 set_fs(KERNEL_DS);
369 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
370 set_fs(old_fs);
371
372 if (offset && put_user(of, offset))
373 return -EFAULT;
374
375 return ret;
376}
377
378asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
379 size_t count)
380{
381 return sys_readahead(fd, merge_64(a2, a3), count);
382}
383
384asmlinkage long sys32_sync_file_range(int fd, int __pad,
385 unsigned long a2, unsigned long a3,
386 unsigned long a4, unsigned long a5,
387 int flags)
388{
389 return sys_sync_file_range(fd,
390 merge_64(a2, a3), merge_64(a4, a5),
391 flags);
392}
393
394asmlinkage long sys32_fadvise64_64(int fd, int __pad,
395 unsigned long a2, unsigned long a3,
396 unsigned long a4, unsigned long a5,
397 int flags)
398{
399 return sys_fadvise64_64(fd,
400 merge_64(a2, a3), merge_64(a4, a5),
401 flags);
402}
403
404asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
405 unsigned offset_a3, unsigned len_a4, unsigned len_a5)
406{
407 return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
408 merge_64(len_a4, len_a5));
409}
410
411save_static_function(sys32_clone);
412static int noinline __used
413_sys32_clone(nabi_no_regargs struct pt_regs regs)
414{
415 unsigned long clone_flags;
416 unsigned long newsp;
417 int __user *parent_tidptr, *child_tidptr;
418
419 clone_flags = regs.regs[4];
420 newsp = regs.regs[5];
421 if (!newsp)
422 newsp = regs.regs[29];
423 parent_tidptr = (int __user *) regs.regs[6];
424
425
426
427 child_tidptr = (int __user *) __dummy4;
428 return do_fork(clone_flags, newsp, ®s, 0,
429 parent_tidptr, child_tidptr);
430}
431
432asmlinkage long sys32_lookup_dcookie(u32 a0, u32 a1, char __user *buf,
433 size_t len)
434{
435 return sys_lookup_dcookie(merge_64(a0, a1), buf, len);
436}
437
