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/mmu_context.h>
59 #define DBG(x) printk x
65 * sys32_execve() executes a new program.
68 asmlinkage int sys32_execve(struct pt_regs *regs)
73 DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
74 filename = getname((const char __user *) regs->gr[26]);
75 error = PTR_ERR(filename);
78 error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
79 compat_ptr(regs->gr[24]), regs);
82 current->ptrace &= ~PT_DTRACE;
91 asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
92 int r22, int r21, int r20)
94 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
95 current->comm, current->pid, r20);
101 struct __sysctl_args32 {
111 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
113 #ifndef CONFIG_SYSCTL_SYSCALL
116 struct __sysctl_args32 tmp;
118 unsigned int oldlen32;
119 size_t oldlen, __user *oldlenp = NULL;
120 unsigned long addr = (((long __force)&args->__unused[0]) + 7) & ~7;
122 DBG(("sysctl32(%p)\n", args));
124 if (copy_from_user(&tmp, args, sizeof(tmp)))
127 if (tmp.oldval && tmp.oldlenp) {
128 /* Duh, this is ugly and might not work if sysctl_args
129 is in read-only memory, but do_sysctl does indirectly
130 a lot of uaccess in both directions and we'd have to
131 basically copy the whole sysctl.c here, and
132 glibc's __sysctl uses rw memory for the structure
134 /* a possibly better hack than this, which will avoid the
135 * problem if the struct is read only, is to push the
136 * 'oldlen' value out to the user's stack instead. -PB
138 if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
141 if (put_user(oldlen, (size_t *)addr))
143 oldlenp = (size_t *)addr;
147 error = do_sysctl((int __user *)(u64)tmp.name, tmp.nlen,
148 (void __user *)(u64)tmp.oldval, oldlenp,
149 (void __user *)(u64)tmp.newval, tmp.newlen);
153 if (get_user(oldlen, (size_t *)addr)) {
157 if (put_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
161 if (copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)))
168 #endif /* CONFIG_SYSCTL */
170 asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
171 struct compat_timespec __user *interval)
176 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, (struct timespec __user *)&t);
177 if (put_compat_timespec(&t, interval))
183 put_compat_timeval(struct compat_timeval __user *u, struct timeval *t)
185 struct compat_timeval t32;
186 t32.tv_sec = t->tv_sec;
187 t32.tv_usec = t->tv_usec;
188 return copy_to_user(u, &t32, sizeof t32);
191 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
195 if (__get_user(o->tv_sec, &i->tv_sec))
197 if (__get_user(usec, &i->tv_usec))
199 o->tv_nsec = usec * 1000;
204 sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
206 extern void do_gettimeofday(struct timeval *tv);
210 do_gettimeofday(&ktv);
211 if (put_compat_timeval(tv, &ktv))
215 extern struct timezone sys_tz;
216 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
223 int sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
229 if (get_ts32(&kts, tv))
233 if (copy_from_user(&ktz, tz, sizeof(ktz)))
237 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
240 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
245 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
246 !new_valid_dev(stat->rdev))
250 if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
253 err = put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
254 err |= put_user(ino, &statbuf->st_ino);
255 err |= put_user(stat->mode, &statbuf->st_mode);
256 err |= put_user(stat->nlink, &statbuf->st_nlink);
257 err |= put_user(0, &statbuf->st_reserved1);
258 err |= put_user(0, &statbuf->st_reserved2);
259 err |= put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
260 err |= put_user(stat->size, &statbuf->st_size);
261 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
262 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
263 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
264 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
265 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
266 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
267 err |= put_user(stat->blksize, &statbuf->st_blksize);
268 err |= put_user(stat->blocks, &statbuf->st_blocks);
269 err |= put_user(0, &statbuf->__unused1);
270 err |= put_user(0, &statbuf->__unused2);
271 err |= put_user(0, &statbuf->__unused3);
272 err |= put_user(0, &statbuf->__unused4);
273 err |= put_user(0, &statbuf->__unused5);
274 err |= put_user(0, &statbuf->st_fstype); /* not avail */
275 err |= put_user(0, &statbuf->st_realdev); /* not avail */
276 err |= put_user(0, &statbuf->st_basemode); /* not avail */
277 err |= put_user(0, &statbuf->st_spareshort);
278 err |= put_user(stat->uid, &statbuf->st_uid);
279 err |= put_user(stat->gid, &statbuf->st_gid);
280 err |= put_user(0, &statbuf->st_spare4[0]);
281 err |= put_user(0, &statbuf->st_spare4[1]);
282 err |= put_user(0, &statbuf->st_spare4[2]);
287 /*** copied from mips64 ***/
289 * Ooo, nasty. We need here to frob 32-bit unsigned longs to
290 * 64-bit unsigned longs.
294 get_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
296 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
300 if (!access_ok(VERIFY_WRITE, ufdset, n*sizeof(u32)))
307 __get_user(l, ufdset);
308 __get_user(h, ufdset+1);
310 *fdset++ = h << 32 | l;
314 __get_user(*fdset, ufdset);
316 /* Tricky, must clear full unsigned long in the
317 * kernel fdset at the end, this makes sure that
320 memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
326 set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
329 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
340 __put_user(l, ufdset);
341 __put_user(h, ufdset+1);
346 __put_user(*fdset, ufdset);
354 asmlinkage long sys32_msgsnd(int msqid,
355 struct msgbuf32 __user *umsgp32,
356 size_t msgsz, int msgflg)
359 struct msgbuf32 mb32;
362 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
365 err = get_user(mb32.mtype, &umsgp32->mtype);
366 mb->mtype = mb32.mtype;
367 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
372 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
378 asmlinkage long sys32_msgrcv(int msqid,
379 struct msgbuf32 __user *umsgp32,
380 size_t msgsz, long msgtyp, int msgflg)
383 struct msgbuf32 mb32;
386 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
389 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
393 mb32.mtype = mb->mtype;
394 err = put_user(mb32.mtype, &umsgp32->mtype);
395 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
406 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
408 mm_segment_t old_fs = get_fs();
412 if (offset && get_user(of, offset))
416 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
419 if (offset && put_user(of, offset))
425 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
427 mm_segment_t old_fs = get_fs();
431 if (offset && get_user(lof, offset))
435 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
438 if (offset && put_user(lof, offset))
445 /* lseek() needs a wrapper because 'offset' can be negative, but the top
446 * half of the argument has been zeroed by syscall.S.
449 asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
451 return sys_lseek(fd, offset, origin);
454 asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
459 /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
460 * The int should be in the first 4, but our argument
461 * frobbing has left it in the last 4.
463 u.val = *((int *)&arg + 1);
464 return sys_semctl (semid, semnum, cmd, u);
466 return sys_semctl (semid, semnum, cmd, arg);
469 long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
472 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
476 asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo,
477 u32 lenhi, u32 lenlo)
479 return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo,
480 ((loff_t)lenhi << 32) | lenlo);