2 * sys_parisc32.c: Conversion between 32bit and 64bit native syscalls.
4 * Copyright (C) 2000-2001 Hewlett Packard Company
5 * Copyright (C) 2000 John Marvin
6 * Copyright (C) 2001 Matthew Wilcox
8 * These routines maintain argument size conversion between 32bit and 64bit
9 * environment. Based heavily on sys_ia32.c and sys_sparc32.c.
12 #include <linux/compat.h>
13 #include <linux/kernel.h>
14 #include <linux/sched.h>
17 #include <linux/file.h>
18 #include <linux/signal.h>
19 #include <linux/resource.h>
20 #include <linux/times.h>
21 #include <linux/utsname.h>
22 #include <linux/time.h>
23 #include <linux/smp.h>
24 #include <linux/smp_lock.h>
25 #include <linux/sem.h>
26 #include <linux/msg.h>
27 #include <linux/shm.h>
28 #include <linux/slab.h>
29 #include <linux/uio.h>
30 #include <linux/nfs_fs.h>
31 #include <linux/ncp_fs.h>
32 #include <linux/sunrpc/svc.h>
33 #include <linux/nfsd/nfsd.h>
34 #include <linux/nfsd/cache.h>
35 #include <linux/nfsd/xdr.h>
36 #include <linux/nfsd/syscall.h>
37 #include <linux/poll.h>
38 #include <linux/personality.h>
39 #include <linux/stat.h>
40 #include <linux/highmem.h>
41 #include <linux/highuid.h>
42 #include <linux/mman.h>
43 #include <linux/binfmts.h>
44 #include <linux/namei.h>
45 #include <linux/vfs.h>
46 #include <linux/ptrace.h>
47 #include <linux/swap.h>
48 #include <linux/syscalls.h>
50 #include <asm/types.h>
51 #include <asm/uaccess.h>
52 #include <asm/semaphore.h>
53 #include <asm/mmu_context.h>
60 #define DBG(x) printk x
66 * sys32_execve() executes a new program.
69 asmlinkage int sys32_execve(struct pt_regs *regs)
74 DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
75 filename = getname((const char __user *) regs->gr[26]);
76 error = PTR_ERR(filename);
79 error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
80 compat_ptr(regs->gr[24]), regs);
83 current->ptrace &= ~PT_DTRACE;
92 asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
93 int r22, int r21, int r20)
95 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
96 current->comm, current->pid, r20);
102 struct __sysctl_args32 {
112 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
114 #ifndef CONFIG_SYSCTL_SYSCALL
117 struct __sysctl_args32 tmp;
119 unsigned int oldlen32;
120 size_t oldlen, __user *oldlenp = NULL;
121 unsigned long addr = (((long __force)&args->__unused[0]) + 7) & ~7;
123 DBG(("sysctl32(%p)\n", args));
125 if (copy_from_user(&tmp, args, sizeof(tmp)))
128 if (tmp.oldval && tmp.oldlenp) {
129 /* Duh, this is ugly and might not work if sysctl_args
130 is in read-only memory, but do_sysctl does indirectly
131 a lot of uaccess in both directions and we'd have to
132 basically copy the whole sysctl.c here, and
133 glibc's __sysctl uses rw memory for the structure
135 /* a possibly better hack than this, which will avoid the
136 * problem if the struct is read only, is to push the
137 * 'oldlen' value out to the user's stack instead. -PB
139 if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
142 if (put_user(oldlen, (size_t *)addr))
144 oldlenp = (size_t *)addr;
148 error = do_sysctl((int __user *)(u64)tmp.name, tmp.nlen,
149 (void __user *)(u64)tmp.oldval, oldlenp,
150 (void __user *)(u64)tmp.newval, tmp.newlen);
154 if (get_user(oldlen, (size_t *)addr)) {
158 if (put_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
162 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
169 #endif /* CONFIG_SYSCTL */
171 asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
172 struct compat_timespec __user *interval)
177 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
178 if (put_compat_timespec(&t, interval))
184 put_compat_timeval(struct compat_timeval __user *u, struct timeval *t)
186 struct compat_timeval t32;
187 t32.tv_sec = t->tv_sec;
188 t32.tv_usec = t->tv_usec;
189 return copy_to_user(u, &t32, sizeof t32);
192 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
196 if (__get_user(o->tv_sec, &i->tv_sec))
198 if (__get_user(usec, &i->tv_usec))
200 o->tv_nsec = usec * 1000;
205 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
207 extern void do_gettimeofday(struct timeval *tv);
211 do_gettimeofday(&ktv);
212 if (put_compat_timeval(tv, &ktv))
216 extern struct timezone sys_tz;
217 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
224 int sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
230 if (get_ts32(&kts, tv))
234 if (copy_from_user(&ktz, tz, sizeof(ktz)))
238 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
241 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
246 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
247 !new_valid_dev(stat->rdev))
251 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
254 err = put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
255 err |= put_user(ino, &statbuf->st_ino);
256 err |= put_user(stat->mode, &statbuf->st_mode);
257 err |= put_user(stat->nlink, &statbuf->st_nlink);
258 err |= put_user(0, &statbuf->st_reserved1);
259 err |= put_user(0, &statbuf->st_reserved2);
260 err |= put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
261 err |= put_user(stat->size, &statbuf->st_size);
262 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
263 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
264 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
265 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
266 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
267 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
268 err |= put_user(stat->blksize, &statbuf->st_blksize);
269 err |= put_user(stat->blocks, &statbuf->st_blocks);
270 err |= put_user(0, &statbuf->__unused1);
271 err |= put_user(0, &statbuf->__unused2);
272 err |= put_user(0, &statbuf->__unused3);
273 err |= put_user(0, &statbuf->__unused4);
274 err |= put_user(0, &statbuf->__unused5);
275 err |= put_user(0, &statbuf->st_fstype); /* not avail */
276 err |= put_user(0, &statbuf->st_realdev); /* not avail */
277 err |= put_user(0, &statbuf->st_basemode); /* not avail */
278 err |= put_user(0, &statbuf->st_spareshort);
279 err |= put_user(stat->uid, &statbuf->st_uid);
280 err |= put_user(stat->gid, &statbuf->st_gid);
281 err |= put_user(0, &statbuf->st_spare4[0]);
282 err |= put_user(0, &statbuf->st_spare4[1]);
283 err |= put_user(0, &statbuf->st_spare4[2]);
288 struct linux32_dirent {
295 struct old_linux32_dirent {
302 struct getdents32_callback {
303 struct linux32_dirent __user * current_dir;
304 struct linux32_dirent __user * previous;
309 struct readdir32_callback {
310 struct old_linux32_dirent __user * dirent;
314 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
315 static int filldir32 (void *__buf, const char *name, int namlen,
316 loff_t offset, u64 ino, unsigned int d_type)
318 struct linux32_dirent __user * dirent;
319 struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
320 int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, 4);
323 buf->error = -EINVAL; /* only used if we fail.. */
324 if (reclen > buf->count)
327 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
329 dirent = buf->previous;
331 put_user(offset, &dirent->d_off);
332 dirent = buf->current_dir;
333 buf->previous = dirent;
334 put_user(d_ino, &dirent->d_ino);
335 put_user(reclen, &dirent->d_reclen);
336 copy_to_user(dirent->d_name, name, namlen);
337 put_user(0, dirent->d_name + namlen);
338 dirent = ((void __user *)dirent) + reclen;
339 buf->current_dir = dirent;
340 buf->count -= reclen;
345 sys32_getdents (unsigned int fd, void __user * dirent, unsigned int count)
348 struct linux32_dirent __user * lastdirent;
349 struct getdents32_callback buf;
353 if (!access_ok(VERIFY_WRITE, dirent, count))
361 buf.current_dir = (struct linux32_dirent __user *) dirent;
366 error = vfs_readdir(file, filldir32, &buf);
370 lastdirent = buf.previous;
372 if (put_user(file->f_pos, &lastdirent->d_off))
375 error = count - buf.count;
384 static int fillonedir32(void * __buf, const char * name, int namlen,
385 loff_t offset, u64 ino, unsigned int d_type)
387 struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
388 struct old_linux32_dirent __user * dirent;
394 if (sizeof(d_ino) < sizeof(ino) && d_ino != ino)
397 dirent = buf->dirent;
398 put_user(d_ino, &dirent->d_ino);
399 put_user(offset, &dirent->d_offset);
400 put_user(namlen, &dirent->d_namlen);
401 copy_to_user(dirent->d_name, name, namlen);
402 put_user(0, dirent->d_name + namlen);
407 sys32_readdir (unsigned int fd, void __user * dirent, unsigned int count)
411 struct readdir32_callback buf;
421 error = vfs_readdir(file, fillonedir32, &buf);
429 /*** copied from mips64 ***/
431 * Ooo, nasty. We need here to frob 32-bit unsigned longs to
432 * 64-bit unsigned longs.
436 get_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
438 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
442 if (!access_ok(VERIFY_WRITE, ufdset, n*sizeof(u32)))
449 __get_user(l, ufdset);
450 __get_user(h, ufdset+1);
452 *fdset++ = h << 32 | l;
456 __get_user(*fdset, ufdset);
458 /* Tricky, must clear full unsigned long in the
459 * kernel fdset at the end, this makes sure that
462 memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
468 set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
471 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
482 __put_user(l, ufdset);
483 __put_user(h, ufdset+1);
488 __put_user(*fdset, ufdset);
496 asmlinkage long sys32_msgsnd(int msqid,
497 struct msgbuf32 __user *umsgp32,
498 size_t msgsz, int msgflg)
501 struct msgbuf32 mb32;
504 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
507 err = get_user(mb32.mtype, &umsgp32->mtype);
508 mb->mtype = mb32.mtype;
509 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
514 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
520 asmlinkage long sys32_msgrcv(int msqid,
521 struct msgbuf32 __user *umsgp32,
522 size_t msgsz, long msgtyp, int msgflg)
525 struct msgbuf32 mb32;
528 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
531 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
535 mb32.mtype = mb->mtype;
536 err = put_user(mb32.mtype, &umsgp32->mtype);
537 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
548 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
550 mm_segment_t old_fs = get_fs();
554 if (offset && get_user(of, offset))
558 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
561 if (offset && put_user(of, offset))
567 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
569 mm_segment_t old_fs = get_fs();
573 if (offset && get_user(lof, offset))
577 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
580 if (offset && put_user(lof, offset))
587 /* lseek() needs a wrapper because 'offset' can be negative, but the top
588 * half of the argument has been zeroed by syscall.S.
591 asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
593 return sys_lseek(fd, offset, origin);
596 asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
601 /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
602 * The int should be in the first 4, but our argument
603 * frobbing has left it in the last 4.
605 u.val = *((int *)&arg + 1);
606 return sys_semctl (semid, semnum, cmd, u);
608 return sys_semctl (semid, semnum, cmd, arg);
611 long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
614 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,