1
2
3
4
5
6
7
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
66asmlinkage unsigned long
67sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
68 unsigned long flags, unsigned long fd, 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
124asmlinkage long sys32_truncate64(const char __user * path,
125 unsigned long __dummy, int a2, int a3)
126{
127 return sys_truncate(path, merge_64(a2, a3));
128}
129
130asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy,
131 int a2, int a3)
132{
133 return sys_ftruncate(fd, merge_64(a2, a3));
134}
135
136asmlinkage int sys32_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
147asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf,
148 size_t count, u32 unused, u64 a4, u64 a5)
149{
150 return sys_pread64(fd, buf, count, merge_64(a4, a5));
151}
152
153asmlinkage ssize_t sys32_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
159asmlinkage int sys32_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
177asmlinkage long
178sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 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
236asmlinkage long
237sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth)
238{
239 return -ENOSYS;
240}
241
242#endif
243
244#ifdef CONFIG_MIPS32_N32
245asmlinkage long sysn32_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
254asmlinkage long sysn32_msgsnd(int msqid, u32 msgp, unsigned msgsz, int msgflg)
255{
256 return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp));
257}
258
259asmlinkage long sysn32_msgrcv(int msqid, u32 msgp, size_t msgsz, int msgtyp,
260 int msgflg)
261{
262 return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64,
263 compat_ptr(msgp));
264}
265#endif
266
267struct sysctl_args32
268{
269 compat_caddr_t name;
270 int nlen;
271 compat_caddr_t oldval;
272 compat_caddr_t oldlenp;
273 compat_caddr_t newval;
274 compat_size_t newlen;
275 unsigned int __unused[4];
276};
277
278#ifdef CONFIG_SYSCTL_SYSCALL
279
280asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args)
281{
282 struct sysctl_args32 tmp;
283 int error;
284 size_t oldlen;
285 size_t __user *oldlenp = NULL;
286 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
287
288 if (copy_from_user(&tmp, args, sizeof(tmp)))
289 return -EFAULT;
290
291 if (tmp.oldval && tmp.oldlenp) {
292
293
294
295
296
297
298 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
299 put_user(oldlen, (size_t __user *)addr))
300 return -EFAULT;
301 oldlenp = (size_t __user *)addr;
302 }
303
304 lock_kernel();
305 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
306 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
307 unlock_kernel();
308 if (oldlenp) {
309 if (!error) {
310 if (get_user(oldlen, (size_t __user *)addr) ||
311 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
312 error = -EFAULT;
313 }
314 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
315 }
316 return error;
317}
318
319#endif
320
321asmlinkage long sys32_newuname(struct new_utsname __user * name)
322{
323 int ret = 0;
324
325 down_read(&uts_sem);
326 if (copy_to_user(name, utsname(), sizeof *name))
327 ret = -EFAULT;
328 up_read(&uts_sem);
329
330 if (current->personality == PER_LINUX32 && !ret)
331 if (copy_to_user(name->machine, "mips\0\0\0", 8))
332 ret = -EFAULT;
333
334 return ret;
335}
336
337asmlinkage int sys32_personality(unsigned long personality)
338{
339 int ret;
340 personality &= 0xffffffff;
341 if (personality(current->personality) == PER_LINUX32 &&
342 personality == PER_LINUX)
343 personality = PER_LINUX32;
344 ret = sys_personality(personality);
345 if (ret == PER_LINUX32)
346 ret = PER_LINUX;
347 return ret;
348}
349
350
351struct ustat32 {
352 compat_daddr_t f_tfree;
353 compat_ino_t f_tinode;
354 char f_fname[6];
355 char f_fpack[6];
356};
357
358extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf);
359
360asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32)
361{
362 int err;
363 struct ustat tmp;
364 struct ustat32 tmp32;
365 mm_segment_t old_fs = get_fs();
366
367 set_fs(KERNEL_DS);
368 err = sys_ustat(dev, (struct ustat __user *)&tmp);
369 set_fs(old_fs);
370
371 if (err)
372 goto out;
373
374 memset(&tmp32, 0, sizeof(struct ustat32));
375 tmp32.f_tfree = tmp.f_tfree;
376 tmp32.f_tinode = tmp.f_tinode;
377
378 err = copy_to_user(ubuf32, &tmp32, sizeof(struct ustat32)) ? -EFAULT : 0;
379
380out:
381 return err;
382}
383
384asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset,
385 s32 count)
386{
387 mm_segment_t old_fs = get_fs();
388 int ret;
389 off_t of;
390
391 if (offset && get_user(of, offset))
392 return -EFAULT;
393
394 set_fs(KERNEL_DS);
395 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
396 set_fs(old_fs);
397
398 if (offset && put_user(of, offset))
399 return -EFAULT;
400
401 return ret;
402}
403
404asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3,
405 size_t count)
406{
407 return sys_readahead(fd, merge_64(a2, a3), count);
408}
409
410asmlinkage long sys32_sync_file_range(int fd, int __pad,
411 unsigned long a2, unsigned long a3,
412 unsigned long a4, unsigned long a5,
413 int flags)
414{
415 return sys_sync_file_range(fd,
416 merge_64(a2, a3), merge_64(a4, a5),
417 flags);
418}
419
420asmlinkage long sys32_fadvise64_64(int fd, int __pad,
421 unsigned long a2, unsigned long a3,
422 unsigned long a4, unsigned long a5,
423 int flags)
424{
425 return sys_fadvise64_64(fd,
426 merge_64(a2, a3), merge_64(a4, a5),
427 flags);
428}
429
430asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2,
431 unsigned offset_a3, unsigned len_a4, unsigned len_a5)
432{
433 return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3),
434 merge_64(len_a4, len_a5));
435}
436
437save_static_function(sys32_clone);
438static int noinline __used
439_sys32_clone(nabi_no_regargs struct pt_regs regs)
440{
441 unsigned long clone_flags;
442 unsigned long newsp;
443 int __user *parent_tidptr, *child_tidptr;
444
445 clone_flags = regs.regs[4];
446 newsp = regs.regs[5];
447 if (!newsp)
448 newsp = regs.regs[29];
449 parent_tidptr = (int __user *) regs.regs[6];
450
451
452
453 child_tidptr = (int __user *) __dummy4;
454 return do_fork(clone_flags, newsp, ®s, 0,
455 parent_tidptr, child_tidptr);
456}
457
