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((char *) 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 *args)
116 struct __sysctl_args32 tmp;
118 unsigned int oldlen32;
119 size_t oldlen, *oldlenp = NULL;
120 unsigned long addr = (((long)&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, tmp.__unused, sizeof(tmp.__unused)))
168 #else /* CONFIG_SYSCTL */
170 asmlinkage long sys32_sysctl(struct __sysctl_args *args)
174 #endif /* CONFIG_SYSCTL */
176 asmlinkage long sys32_sched_rr_get_interval(pid_t pid,
177 struct compat_timespec *interval)
182 KERNEL_SYSCALL(ret, sys_sched_rr_get_interval, pid, &t);
183 if (put_compat_timespec(&t, interval))
189 put_compat_timeval(struct compat_timeval *u, struct timeval *t)
191 struct compat_timeval t32;
192 t32.tv_sec = t->tv_sec;
193 t32.tv_usec = t->tv_usec;
194 return copy_to_user(u, &t32, sizeof t32);
197 static inline long get_ts32(struct timespec *o, struct compat_timeval *i)
201 if (__get_user(o->tv_sec, &i->tv_sec))
203 if (__get_user(usec, &i->tv_usec))
205 o->tv_nsec = usec * 1000;
209 asmlinkage long sys32_time(compat_time_t *tloc)
214 do_gettimeofday(&tv);
218 if (put_user(now32, tloc))
225 sys32_gettimeofday(struct compat_timeval *tv, struct timezone *tz)
227 extern void do_gettimeofday(struct timeval *tv);
231 do_gettimeofday(&ktv);
232 if (put_compat_timeval(tv, &ktv))
236 extern struct timezone sys_tz;
237 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
244 int sys32_settimeofday(struct compat_timeval *tv, struct timezone *tz)
250 if (get_ts32(&kts, tv))
254 if (copy_from_user(&ktz, tz, sizeof(ktz)))
258 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
261 int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
265 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
266 !new_valid_dev(stat->rdev))
269 err = put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
270 err |= put_user(stat->ino, &statbuf->st_ino);
271 err |= put_user(stat->mode, &statbuf->st_mode);
272 err |= put_user(stat->nlink, &statbuf->st_nlink);
273 err |= put_user(0, &statbuf->st_reserved1);
274 err |= put_user(0, &statbuf->st_reserved2);
275 err |= put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
276 err |= put_user(stat->size, &statbuf->st_size);
277 err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
278 err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
279 err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
280 err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
281 err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
282 err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
283 err |= put_user(stat->blksize, &statbuf->st_blksize);
284 err |= put_user(stat->blocks, &statbuf->st_blocks);
285 err |= put_user(0, &statbuf->__unused1);
286 err |= put_user(0, &statbuf->__unused2);
287 err |= put_user(0, &statbuf->__unused3);
288 err |= put_user(0, &statbuf->__unused4);
289 err |= put_user(0, &statbuf->__unused5);
290 err |= put_user(0, &statbuf->st_fstype); /* not avail */
291 err |= put_user(0, &statbuf->st_realdev); /* not avail */
292 err |= put_user(0, &statbuf->st_basemode); /* not avail */
293 err |= put_user(0, &statbuf->st_spareshort);
294 err |= put_user(stat->uid, &statbuf->st_uid);
295 err |= put_user(stat->gid, &statbuf->st_gid);
296 err |= put_user(0, &statbuf->st_spare4[0]);
297 err |= put_user(0, &statbuf->st_spare4[1]);
298 err |= put_user(0, &statbuf->st_spare4[2]);
303 struct linux32_dirent {
310 struct old_linux32_dirent {
317 struct getdents32_callback {
318 struct linux32_dirent * current_dir;
319 struct linux32_dirent * previous;
324 struct readdir32_callback {
325 struct old_linux32_dirent * dirent;
329 #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
330 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
332 filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
335 struct linux32_dirent * dirent;
336 struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
337 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
339 buf->error = -EINVAL; /* only used if we fail.. */
340 if (reclen > buf->count)
342 dirent = buf->previous;
344 put_user(offset, &dirent->d_off);
345 dirent = buf->current_dir;
346 buf->previous = dirent;
347 put_user(ino, &dirent->d_ino);
348 put_user(reclen, &dirent->d_reclen);
349 copy_to_user(dirent->d_name, name, namlen);
350 put_user(0, dirent->d_name + namlen);
351 dirent = (struct linux32_dirent *)((char *)dirent + reclen);
352 buf->current_dir = dirent;
353 buf->count -= reclen;
358 sys32_getdents (unsigned int fd, void * dirent, unsigned int count)
361 struct linux32_dirent * lastdirent;
362 struct getdents32_callback buf;
370 buf.current_dir = (struct linux32_dirent *) dirent;
375 error = vfs_readdir(file, filldir32, &buf);
379 lastdirent = buf.previous;
381 put_user(file->f_pos, &lastdirent->d_off);
382 error = count - buf.count;
392 fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
395 struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
396 struct old_linux32_dirent * dirent;
401 dirent = buf->dirent;
402 put_user(ino, &dirent->d_ino);
403 put_user(offset, &dirent->d_offset);
404 put_user(namlen, &dirent->d_namlen);
405 copy_to_user(dirent->d_name, name, namlen);
406 put_user(0, dirent->d_name + namlen);
411 sys32_readdir (unsigned int fd, void * dirent, unsigned int count)
415 struct readdir32_callback buf;
425 error = vfs_readdir(file, fillonedir32, &buf);
433 /*** copied from mips64 ***/
435 * Ooo, nasty. We need here to frob 32-bit unsigned longs to
436 * 64-bit unsigned longs.
440 get_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
442 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
446 if (verify_area(VERIFY_WRITE, ufdset, n*sizeof(u32)))
453 __get_user(l, ufdset);
454 __get_user(h, ufdset+1);
456 *fdset++ = h << 32 | l;
460 __get_user(*fdset, ufdset);
462 /* Tricky, must clear full unsigned long in the
463 * kernel fdset at the end, this makes sure that
466 memset(fdset, 0, ((n + 1) & ~1)*sizeof(u32));
472 set_fd_set32(unsigned long n, u32 *ufdset, unsigned long *fdset)
475 n = (n + 8*sizeof(u32) - 1) / (8*sizeof(u32));
486 __put_user(l, ufdset);
487 __put_user(h, ufdset+1);
492 __put_user(*fdset, ufdset);
500 asmlinkage long sys32_msgsnd(int msqid,
501 struct msgbuf32 *umsgp32,
502 size_t msgsz, int msgflg)
505 struct msgbuf32 mb32;
508 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
511 err = get_user(mb32.mtype, &umsgp32->mtype);
512 mb->mtype = mb32.mtype;
513 err |= copy_from_user(mb->mtext, &umsgp32->mtext, msgsz);
518 KERNEL_SYSCALL(err, sys_msgsnd, msqid, mb, msgsz, msgflg);
524 asmlinkage long sys32_msgrcv(int msqid,
525 struct msgbuf32 *umsgp32,
526 size_t msgsz, long msgtyp, int msgflg)
529 struct msgbuf32 mb32;
532 if ((mb = kmalloc(msgsz + sizeof *mb + 4, GFP_KERNEL)) == NULL)
535 KERNEL_SYSCALL(err, sys_msgrcv, msqid, mb, msgsz, msgtyp, msgflg);
539 mb32.mtype = mb->mtype;
540 err = put_user(mb32.mtype, &umsgp32->mtype);
541 err |= copy_to_user(&umsgp32->mtext, mb->mtext, len);
552 asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t *offset, s32 count)
554 mm_segment_t old_fs = get_fs();
558 if (offset && get_user(of, offset))
562 ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count);
565 if (offset && put_user(of, offset))
571 typedef long __kernel_loff_t32; /* move this to asm/posix_types.h? */
573 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, __kernel_loff_t32 *offset, s32 count)
575 mm_segment_t old_fs = get_fs();
579 if (offset && get_user(lof, offset))
583 ret = sys_sendfile64(out_fd, in_fd, offset ? &lof : NULL, count);
586 if (offset && put_user(lof, offset))
594 unsigned int modes; /* mode selector */
595 int offset; /* time offset (usec) */
596 int freq; /* frequency offset (scaled ppm) */
597 int maxerror; /* maximum error (usec) */
598 int esterror; /* estimated error (usec) */
599 int status; /* clock command/status */
600 int constant; /* pll time constant */
601 int precision; /* clock precision (usec) (read only) */
602 int tolerance; /* clock frequency tolerance (ppm)
605 struct compat_timeval time; /* (read only) */
606 int tick; /* (modified) usecs between clock ticks */
608 int ppsfreq; /* pps frequency (scaled ppm) (ro) */
609 int jitter; /* pps jitter (us) (ro) */
610 int shift; /* interval duration (s) (shift) (ro) */
611 int stabil; /* pps stability (scaled ppm) (ro) */
612 int jitcnt; /* jitter limit exceeded (ro) */
613 int calcnt; /* calibration intervals (ro) */
614 int errcnt; /* calibration errors (ro) */
615 int stbcnt; /* stability limit exceeded (ro) */
617 int :32; int :32; int :32; int :32;
618 int :32; int :32; int :32; int :32;
619 int :32; int :32; int :32; int :32;
622 asmlinkage long sys32_adjtimex(struct timex32 *txc_p32)
627 extern int do_adjtimex(struct timex *txc);
629 if(copy_from_user(&t32, txc_p32, sizeof(struct timex32)))
632 #define CP(x) txc.x = t32.x
633 CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror);
634 CP(status); CP(constant); CP(precision); CP(tolerance);
635 CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
636 CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
638 ret = do_adjtimex(&txc);
640 #define CP(x) t32.x = txc.x
641 CP(modes); CP(offset); CP(freq); CP(maxerror); CP(esterror);
642 CP(status); CP(constant); CP(precision); CP(tolerance);
643 CP(time.tv_sec); CP(time.tv_usec); CP(tick); CP(ppsfreq); CP(jitter);
644 CP(shift); CP(stabil); CP(jitcnt); CP(calcnt); CP(errcnt);
646 return copy_to_user(txc_p32, &t32, sizeof(struct timex32)) ? -EFAULT : ret;
659 unsigned short procs;
666 /* We used to call sys_sysinfo and translate the result. But sys_sysinfo
667 * undoes the good work done elsewhere, and rather than undoing the
668 * damage, I decided to just duplicate the code from sys_sysinfo here.
671 asmlinkage int sys32_sysinfo(struct sysinfo32 *info)
677 /* We don't need a memset here because we copy the
678 * struct to userspace once element at a time.
682 seq = read_seqbegin(&xtime_lock);
683 /* requires vx virtualization */
684 val.uptime = jiffies / HZ;
686 val.loads[0] = avenrun[0] << (SI_LOAD_SHIFT - FSHIFT);
687 val.loads[1] = avenrun[1] << (SI_LOAD_SHIFT - FSHIFT);
688 val.loads[2] = avenrun[2] << (SI_LOAD_SHIFT - FSHIFT);
690 val.procs = nr_threads;
691 } while (read_seqretry(&xtime_lock, seq));
697 err = put_user (val.uptime, &info->uptime);
698 err |= __put_user (val.loads[0], &info->loads[0]);
699 err |= __put_user (val.loads[1], &info->loads[1]);
700 err |= __put_user (val.loads[2], &info->loads[2]);
701 err |= __put_user (val.totalram, &info->totalram);
702 err |= __put_user (val.freeram, &info->freeram);
703 err |= __put_user (val.sharedram, &info->sharedram);
704 err |= __put_user (val.bufferram, &info->bufferram);
705 err |= __put_user (val.totalswap, &info->totalswap);
706 err |= __put_user (val.freeswap, &info->freeswap);
707 err |= __put_user (val.procs, &info->procs);
708 err |= __put_user (val.totalhigh, &info->totalhigh);
709 err |= __put_user (val.freehigh, &info->freehigh);
710 err |= __put_user (val.mem_unit, &info->mem_unit);
711 return err ? -EFAULT : 0;
715 /* lseek() needs a wrapper because 'offset' can be negative, but the top
716 * half of the argument has been zeroed by syscall.S.
719 asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
721 return sys_lseek(fd, offset, origin);
724 asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
729 /* Ugh. arg is a union of int,ptr,ptr,ptr, so is 8 bytes.
730 * The int should be in the first 4, but our argument
731 * frobbing has left it in the last 4.
733 u.val = *((int *)&arg + 1);
734 return sys_semctl (semid, semnum, cmd, u);
736 return sys_semctl (semid, semnum, cmd, arg);
739 long sys32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char *buf,
742 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,