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/config.h>
13 #include <linux/compat.h>
14 #include <linux/kernel.h>
15 #include <linux/sched.h>
18 #include <linux/file.h>
19 #include <linux/signal.h>
20 #include <linux/resource.h>
21 #include <linux/times.h>
22 #include <linux/utsname.h>
23 #include <linux/time.h>
24 #include <linux/timex.h>
25 #include <linux/smp.h>
26 #include <linux/smp_lock.h>
27 #include <linux/sem.h>
28 #include <linux/msg.h>
29 #include <linux/shm.h>
30 #include <linux/slab.h>
31 #include <linux/uio.h>
32 #include <linux/nfs_fs.h>
33 #include <linux/ncp_fs.h>
34 #include <linux/sunrpc/svc.h>
35 #include <linux/nfsd/nfsd.h>
36 #include <linux/nfsd/cache.h>
37 #include <linux/nfsd/xdr.h>
38 #include <linux/nfsd/syscall.h>
39 #include <linux/poll.h>
40 #include <linux/personality.h>
41 #include <linux/stat.h>
42 #include <linux/highmem.h>
43 #include <linux/highuid.h>
44 #include <linux/mman.h>
45 #include <linux/binfmts.h>
46 #include <linux/namei.h>
47 #include <linux/vfs.h>
48 #include <linux/ptrace.h>
49 #include <linux/swap.h>
50 #include <linux/syscalls.h>
52 #include <asm/types.h>
53 #include <asm/uaccess.h>
54 #include <asm/semaphore.h>
55 #include <asm/mmu_context.h>
62 #define DBG(x) printk x
68 * sys32_execve() executes a new program.
71 asmlinkage int sys32_execve(struct pt_regs *regs)
76 DBG(("sys32_execve(%p) r26 = 0x%lx\n", regs, regs->gr[26]));
77 filename = getname((const char __user *) regs->gr[26]);
78 error = PTR_ERR(filename);
81 error = compat_do_execve(filename, compat_ptr(regs->gr[25]),
82 compat_ptr(regs->gr[24]), regs);
85 current->ptrace &= ~PT_DTRACE;
94 asmlinkage long sys32_unimplemented(int r26, int r25, int r24, int r23,
95 int r22, int r21, int r20)
97 printk(KERN_ERR "%s(%d): Unimplemented 32 on 64 syscall #%d!\n",
98 current->comm, current->pid, r20);
104 struct __sysctl_args32 {
114 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
116 struct __sysctl_args32 tmp;
118 unsigned int oldlen32;
119 size_t oldlen, *oldlenp = NULL;
120 unsigned long addr = (((long __force)&args->__unused[0]) + 7) & ~7;
121 extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
122 void *newval, size_t newlen);
124 DBG(("sysctl32(%p)\n", args));
126 if (copy_from_user(&tmp, args, sizeof(tmp)))
129 if (tmp.oldval && tmp.oldlenp) {
130 /* Duh, this is ugly and might not work if sysctl_args
131 is in read-only memory, but do_sysctl does indirectly
132 a lot of uaccess in both directions and we'd have to
133 basically copy the whole sysctl.c here, and
134 glibc's __sysctl uses rw memory for the structure
136 /* a possibly better hack than this, which will avoid the
137 * problem if the struct is read only, is to push the
138 * 'oldlen' value out to the user's stack instead. -PB
140 if (get_user(oldlen32, (u32 *)(u64)tmp.oldlenp))
143 if (put_user(oldlen, (size_t *)addr))
145 oldlenp = (size_t *)addr;
149 error = do_sysctl((int *)(u64)tmp.name, tmp.nlen, (void *)(u64)tmp.oldval,
150 oldlenp, (void *)(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[0], 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)
244 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
245 !new_valid_dev(stat->rdev))
248 err = put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
249 err |= put_user(stat->ino, &statbuf->st_ino);
250 err |= put_user(stat->mode, &statbuf->st_mode);
251 err |= put_user(stat->nlink, &statbuf->st_nlink);
252 err |= put_user(0, &statbuf->st_reserved1);
253 err |= put_user(0, &statbuf->st_reserved2);
254 err |= put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
255 err |= put_user(stat->size, &statbuf->st_size);
256 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
257 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
258 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
259 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
260 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
261 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
262 err |= put_user(stat->blksize, &statbuf->st_blksize);
263 err |= put_user(stat->blocks, &statbuf->st_blocks);
264 err |= put_user(0, &statbuf->__unused1);
265 err |= put_user(0, &statbuf->__unused2);
266 err |= put_user(0, &statbuf->__unused3);
267 err |= put_user(0, &statbuf->__unused4);
268 err |= put_user(0, &statbuf->__unused5);
269 err |= put_user(0, &statbuf->st_fstype); /* not avail */
270 err |= put_user(0, &statbuf->st_realdev); /* not avail */
271 err |= put_user(0, &statbuf->st_basemode); /* not avail */
272 err |= put_user(0, &statbuf->st_spareshort);
273 err |= put_user(stat->uid, &statbuf->st_uid);
274 err |= put_user(stat->gid, &statbuf->st_gid);
275 err |= put_user(0, &statbuf->st_spare4[0]);
276 err |= put_user(0, &statbuf->st_spare4[1]);
277 err |= put_user(0, &statbuf->st_spare4[2]);
282 struct linux32_dirent {
289 struct old_linux32_dirent {
296 struct getdents32_callback {
297 struct linux32_dirent __user * current_dir;
298 struct linux32_dirent __user * previous;
303 struct readdir32_callback {
304 struct old_linux32_dirent __user * dirent;
308 #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
309 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
311 filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
314 struct linux32_dirent __user * dirent;
315 struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
316 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
318 buf->error = -EINVAL; /* only used if we fail.. */
319 if (reclen > buf->count)
321 dirent = buf->previous;
323 put_user(offset, &dirent->d_off);
324 dirent = buf->current_dir;
325 buf->previous = dirent;
326 put_user(ino, &dirent->d_ino);
327 put_user(reclen, &dirent->d_reclen);
328 copy_to_user(dirent->d_name, name, namlen);
329 put_user(0, dirent->d_name + namlen);
330 dirent = ((void __user *)dirent) + reclen;
331 buf->current_dir = dirent;
332 buf->count -= reclen;
337 sys32_getdents (unsigned int fd, void __user * dirent, unsigned int count)
340 struct linux32_dirent __user * lastdirent;
341 struct getdents32_callback buf;
349 buf.current_dir = (struct linux32_dirent __user *) dirent;
354 error = vfs_readdir(file, filldir32, &buf);
358 lastdirent = buf.previous;
360 put_user(file->f_pos, &lastdirent->d_off);
361 error = count - buf.count;
371 fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
374 struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
375 struct old_linux32_dirent __user * dirent;
380 dirent = buf->dirent;
381 put_user(ino, &dirent->d_ino);
382 put_user(offset, &dirent->d_offset);
383 put_user(namlen, &dirent->d_namlen);
384 copy_to_user(dirent->d_name, name, namlen);
385 put_user(0, dirent->d_name + namlen);
390 sys32_readdir (unsigned int fd, void __user * dirent, unsigned int count)
394 struct readdir32_callback buf;
404 error = vfs_readdir(file, fillonedir32, &buf);
412 /*** copied from mips64 ***/
414 * Ooo, nasty. We need here to frob 32-bit unsigned longs to
415 * 64-bit unsigned longs.
419 get_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
421 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
425 if (!access_ok(VERIFY_WRITE, ufdset, n*sizeof(u32)))
432 __get_user(l, ufdset);
433 __get_user(h, ufdset+1);
435 *fdset++ = h << 32 | l;
439 __get_user(*fdset, ufdset);
441 /* Tricky, must clear full unsigned long in the
442 * kernel fdset at the end, this makes sure that
445 memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
451 set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
454 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
465 __put_user(l, ufdset);
466 __put_user(h, ufdset+1);
471 __put_user(*fdset, ufdset);
479 asmlinkage long sys32_msgsnd(int msqid,
480 struct msgbuf32 __user *umsgp32,
481 size_t msgsz, int msgflg)
484 struct msgbuf32 mb32;
487 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
490 err = get_user(mb32.mtype, &umsgp32->mtype);
491 mb->mtype = mb32.mtype;
492 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
497 KERNEL_SYSCALL(err, sys_msgsnd, msqid, (struct msgbuf __user *)mb, msgsz, msgflg);
503 asmlinkage long sys32_msgrcv(int msqid,
504 struct msgbuf32 __user *umsgp32,
505 size_t msgsz, long msgtyp, int msgflg)
508 struct msgbuf32 mb32;
511 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
514 KERNEL_SYSCALL(err, sys_msgrcv, msqid, (struct msgbuf __user *)mb, msgsz, msgtyp, msgflg);
518 mb32.mtype = mb->mtype;
519 err = put_user(mb32.mtype, &umsgp32->mtype);
520 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
531 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, s32 count)
533 mm_segment_t old_fs = get_fs();
537 if (offset && get_user(of, offset))
541 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count);
544 if (offset && put_user(of, offset))
550 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
552 mm_segment_t old_fs = get_fs();
556 if (offset && get_user(lof, offset))
560 ret = sys_sendfile64(out_fd, in_fd, offset ? (loff_t __user *)&lof : NULL, count);
563 if (offset && put_user(lof, offset))
571 unsigned int modes; /* mode selector */
572 int offset; /* time offset (usec) */
573 int freq; /* frequency offset (scaled ppm) */
574 int maxerror; /* maximum error (usec) */
575 int esterror; /* estimated error (usec) */
576 int status; /* clock command/status */
577 int constant; /* pll time constant */
578 int precision; /* clock precision (usec) (read only) */
579 int tolerance; /* clock frequency tolerance (ppm)
582 struct compat_timeval time; /* (read only) */
583 int tick; /* (modified) usecs between clock ticks */
585 int ppsfreq; /* pps frequency (scaled ppm) (ro) */
586 int jitter; /* pps jitter (us) (ro) */
587 int shift; /* interval duration (s) (shift) (ro) */
588 int stabil; /* pps stability (scaled ppm) (ro) */
589 int jitcnt; /* jitter limit exceeded (ro) */
590 int calcnt; /* calibration intervals (ro) */
591 int errcnt; /* calibration errors (ro) */
592 int stbcnt; /* stability limit exceeded (ro) */
594 int :32; int :32; int :32; int :32;
595 int :32; int :32; int :32; int :32;
596 int :32; int :32; int :32; int :32;
599 asmlinkage long sys32_adjtimex(struct timex32 __user *txc_p32)
604 extern int do_adjtimex(struct timex *txc);
606 if(copy_from_user(&t32, txc_p32, sizeof(struct timex32)))
609 #define CP(x) txc.x = t32.x
610 CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror);
611 CP(status); CP(constant); CP(precision); CP(tolerance);
612 CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
613 CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
615 ret = do_adjtimex(&txc);
617 #define CP(x) t32.x = txc.x
618 CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror);
619 CP(status); CP(constant); CP(precision); CP(tolerance);
620 CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
621 CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
623 return copy_to_user(txc_p32, &t32, sizeof(struct timex32)) ? -EFAULT : ret;
636 unsigned short procs;
643 /* We used to call sys_sysinfo and translate the result. But sys_sysinfo
644 * undoes the good work done elsewhere, and rather than undoing the
645 * damage, I decided to just duplicate the code from sys_sysinfo here.
648 asmlinkage int sys32_sysinfo(struct sysinfo32 __user *info)
654 /* We don't need a memset here because we copy the
655 * struct to userspace once element at a time.
659 seq = read_seqbegin(&xtime_lock);
660 val.uptime = jiffies / HZ;
662 val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT);
663 val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT);
664 val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT);
666 val.procs = nr_threads;
667 } while (read_seqretry(&xtime_lock, seq));
673 err = put_user (val.uptime, &info->uptime);
674 err |= __put_user (val.loads[0], &info->loads[0]);
675 err |= __put_user (val.loads[1], &info->loads[1]);
676 err |= __put_user (val.loads[2], &info->loads[2]);
677 err |= __put_user (val.totalram, &info->totalram);
678 err |= __put_user (val.freeram, &info->freeram);
679 err |= __put_user (val.sharedram, &info->sharedram);
680 err |= __put_user (val.bufferram, &info->bufferram);
681 err |= __put_user (val.totalswap, &info->totalswap);
682 err |= __put_user (val.freeswap, &info->freeswap);
683 err |= __put_user (val.procs, &info->procs);
684 err |= __put_user (val.totalhigh, &info->totalhigh);
685 err |= __put_user (val.freehigh, &info->freehigh);
686 err |= __put_user (val.mem_unit, &info->mem_unit);
687 return err ? -EFAULT : 0;
691 /* lseek() needs a wrapper because 'offset' can be negative, but the top
692 * half of the argument has been zeroed by syscall.S.
695 asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
697 return sys_lseek(fd, offset, origin);
700 asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
705 /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
706 * The int should be in the first 4, but our argument
707 * frobbing has left it in the last 4.
709 u.val = *((int *)&arg + 1);
710 return sys_semctl (semid, semnum, cmd, u);
712 return sys_semctl (semid, semnum, cmd, arg);
715 long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
718 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,