2 * sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
4 * Copyright (C) 2001 IBM
5 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
6 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
8 * These routines maintain argument size conversion between 32bit and 64bit
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
17 #include <linux/config.h>
18 #include <linux/kernel.h>
19 #include <linux/sched.h>
22 #include <linux/file.h>
23 #include <linux/signal.h>
24 #include <linux/resource.h>
25 #include <linux/times.h>
26 #include <linux/utsname.h>
27 #include <linux/timex.h>
28 #include <linux/smp.h>
29 #include <linux/smp_lock.h>
30 #include <linux/sem.h>
31 #include <linux/msg.h>
32 #include <linux/shm.h>
33 #include <linux/poll.h>
34 #include <linux/personality.h>
35 #include <linux/stat.h>
36 #include <linux/mman.h>
38 #include <linux/syscalls.h>
39 #include <linux/unistd.h>
40 #include <linux/sysctl.h>
41 #include <linux/binfmts.h>
42 #include <linux/security.h>
43 #include <linux/compat.h>
44 #include <linux/ptrace.h>
45 #include <linux/elf.h>
47 #include <asm/ptrace.h>
48 #include <asm/types.h>
50 #include <asm/uaccess.h>
51 #include <asm/unistd.h>
52 #include <asm/semaphore.h>
54 #include <asm/mmu_context.h>
55 #include <asm/systemcfg.h>
59 /* readdir & getdents */
60 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
61 #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
63 struct old_linux_dirent32 {
66 unsigned short d_namlen;
70 struct readdir_callback32 {
71 struct old_linux_dirent32 __user * dirent;
75 static int fillonedir(void * __buf, const char * name, int namlen,
76 off_t offset, ino_t ino, unsigned int d_type)
78 struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
79 struct old_linux_dirent32 __user * dirent;
85 put_user(ino, &dirent->d_ino);
86 put_user(offset, &dirent->d_offset);
87 put_user(namlen, &dirent->d_namlen);
88 copy_to_user(dirent->d_name, name, namlen);
89 put_user(0, dirent->d_name + namlen);
93 asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
97 struct readdir_callback32 buf;
106 error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
117 struct linux_dirent32 {
120 unsigned short d_reclen;
124 struct getdents_callback32 {
125 struct linux_dirent32 __user * current_dir;
126 struct linux_dirent32 __user * previous;
131 static int filldir(void * __buf, const char * name, int namlen, off_t offset,
132 ino_t ino, unsigned int d_type)
134 struct linux_dirent32 __user * dirent;
135 struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf;
136 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2);
138 buf->error = -EINVAL; /* only used if we fail.. */
139 if (reclen > buf->count)
141 dirent = buf->previous;
143 if (__put_user(offset, &dirent->d_off))
146 dirent = buf->current_dir;
147 if (__put_user(ino, &dirent->d_ino))
149 if (__put_user(reclen, &dirent->d_reclen))
151 if (copy_to_user(dirent->d_name, name, namlen))
153 if (__put_user(0, dirent->d_name + namlen))
155 if (__put_user(d_type, (char __user *) dirent + reclen - 1))
157 buf->previous = dirent;
158 dirent = (void __user *)dirent + reclen;
159 buf->current_dir = dirent;
160 buf->count -= reclen;
163 buf->error = -EFAULT;
167 asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent,
171 struct linux_dirent32 __user * lastdirent;
172 struct getdents_callback32 buf;
176 if (!access_ok(VERIFY_WRITE, dirent, count))
184 buf.current_dir = dirent;
189 error = vfs_readdir(file, (filldir_t)filldir, &buf);
193 lastdirent = buf.previous;
195 if (put_user(file->f_pos, &lastdirent->d_off))
198 error = count - buf.count;
207 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
208 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
212 return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
215 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
219 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
220 !new_valid_dev(stat->rdev))
223 err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT;
224 err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
225 err |= __put_user(stat->ino, &statbuf->st_ino);
226 err |= __put_user(stat->mode, &statbuf->st_mode);
227 err |= __put_user(stat->nlink, &statbuf->st_nlink);
228 err |= __put_user(stat->uid, &statbuf->st_uid);
229 err |= __put_user(stat->gid, &statbuf->st_gid);
230 err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
231 err |= __put_user(stat->size, &statbuf->st_size);
232 err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime);
233 err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
234 err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
235 err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
236 err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
237 err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
238 err |= __put_user(stat->blksize, &statbuf->st_blksize);
239 err |= __put_user(stat->blocks, &statbuf->st_blocks);
240 err |= __put_user(0, &statbuf->__unused4[0]);
241 err |= __put_user(0, &statbuf->__unused4[1]);
246 /* Note: it is necessary to treat option as an unsigned int,
247 * with the corresponding cast to a signed int to insure that the
248 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
249 * and the register representation of a signed int (msr in 64-bit mode) is performed.
251 asmlinkage long sys32_sysfs(u32 option, u32 arg1, u32 arg2)
253 return sys_sysfs((int)option, arg1, arg2);
256 /* Handle adjtimex compatibility. */
259 s32 offset, freq, maxerror, esterror;
260 s32 status, constant, precision, tolerance;
261 struct compat_timeval time;
263 s32 ppsfreq, jitter, shift, stabil;
264 s32 jitcnt, calcnt, errcnt, stbcnt;
265 s32 :32; s32 :32; s32 :32; s32 :32;
266 s32 :32; s32 :32; s32 :32; s32 :32;
267 s32 :32; s32 :32; s32 :32; s32 :32;
270 extern int do_adjtimex(struct timex *);
271 extern void ppc_adjtimex(void);
273 asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
278 memset(&txc, 0, sizeof(struct timex));
280 if(get_user(txc.modes, &utp->modes) ||
281 __get_user(txc.offset, &utp->offset) ||
282 __get_user(txc.freq, &utp->freq) ||
283 __get_user(txc.maxerror, &utp->maxerror) ||
284 __get_user(txc.esterror, &utp->esterror) ||
285 __get_user(txc.status, &utp->status) ||
286 __get_user(txc.constant, &utp->constant) ||
287 __get_user(txc.precision, &utp->precision) ||
288 __get_user(txc.tolerance, &utp->tolerance) ||
289 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
290 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
291 __get_user(txc.tick, &utp->tick) ||
292 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
293 __get_user(txc.jitter, &utp->jitter) ||
294 __get_user(txc.shift, &utp->shift) ||
295 __get_user(txc.stabil, &utp->stabil) ||
296 __get_user(txc.jitcnt, &utp->jitcnt) ||
297 __get_user(txc.calcnt, &utp->calcnt) ||
298 __get_user(txc.errcnt, &utp->errcnt) ||
299 __get_user(txc.stbcnt, &utp->stbcnt))
302 ret = do_adjtimex(&txc);
304 /* adjust the conversion of TB to time of day to track adjtimex */
307 if(put_user(txc.modes, &utp->modes) ||
308 __put_user(txc.offset, &utp->offset) ||
309 __put_user(txc.freq, &utp->freq) ||
310 __put_user(txc.maxerror, &utp->maxerror) ||
311 __put_user(txc.esterror, &utp->esterror) ||
312 __put_user(txc.status, &utp->status) ||
313 __put_user(txc.constant, &utp->constant) ||
314 __put_user(txc.precision, &utp->precision) ||
315 __put_user(txc.tolerance, &utp->tolerance) ||
316 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
317 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
318 __put_user(txc.tick, &utp->tick) ||
319 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
320 __put_user(txc.jitter, &utp->jitter) ||
321 __put_user(txc.shift, &utp->shift) ||
322 __put_user(txc.stabil, &utp->stabil) ||
323 __put_user(txc.jitcnt, &utp->jitcnt) ||
324 __put_user(txc.calcnt, &utp->calcnt) ||
325 __put_user(txc.errcnt, &utp->errcnt) ||
326 __put_user(txc.stbcnt, &utp->stbcnt))
332 asmlinkage long sys32_pause(void)
334 current->state = TASK_INTERRUPTIBLE;
337 return -ERESTARTNOHAND;
340 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
344 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
346 if (__get_user(o->tv_sec, &i->tv_sec))
348 if (__get_user(usec, &i->tv_usec))
350 o->tv_nsec = usec * 1000;
354 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
356 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
357 (__put_user(i->tv_sec, &o->tv_sec) |
358 __put_user(i->tv_usec, &o->tv_usec)));
370 unsigned short procs;
375 char _f[20-2*sizeof(int)-sizeof(int)];
378 asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
383 mm_segment_t old_fs = get_fs ();
385 /* The __user cast is valid due to set_fs() */
387 ret = sys_sysinfo((struct sysinfo __user *)&s);
390 /* Check to see if any memory value is too large for 32-bit and
391 * scale down if needed.
393 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
394 while (s.mem_unit < PAGE_SIZE) {
398 s.totalram >>=bitcount;
399 s.freeram >>= bitcount;
400 s.sharedram >>= bitcount;
401 s.bufferram >>= bitcount;
402 s.totalswap >>= bitcount;
403 s.freeswap >>= bitcount;
404 s.totalhigh >>= bitcount;
405 s.freehigh >>= bitcount;
408 err = put_user (s.uptime, &info->uptime);
409 err |= __put_user (s.loads[0], &info->loads[0]);
410 err |= __put_user (s.loads[1], &info->loads[1]);
411 err |= __put_user (s.loads[2], &info->loads[2]);
412 err |= __put_user (s.totalram, &info->totalram);
413 err |= __put_user (s.freeram, &info->freeram);
414 err |= __put_user (s.sharedram, &info->sharedram);
415 err |= __put_user (s.bufferram, &info->bufferram);
416 err |= __put_user (s.totalswap, &info->totalswap);
417 err |= __put_user (s.freeswap, &info->freeswap);
418 err |= __put_user (s.procs, &info->procs);
419 err |= __put_user (s.totalhigh, &info->totalhigh);
420 err |= __put_user (s.freehigh, &info->freehigh);
421 err |= __put_user (s.mem_unit, &info->mem_unit);
431 /* Translations due to time_t size differences. Which affects all
432 sorts of things, like timeval and itimerval. */
433 extern struct timezone sys_tz;
435 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
439 do_gettimeofday(&ktv);
440 if (put_tv32(tv, &ktv))
444 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
453 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
459 if (get_ts32(&kts, tv))
463 if (copy_from_user(&ktz, tz, sizeof(ktz)))
467 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
470 #ifdef CONFIG_SYSVIPC
471 long sys32_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
476 version = call >> 16; /* hack for backward compatibility */
483 /* sign extend semid */
484 return compat_sys_semtimedop((int)first,
485 compat_ptr(ptr), second,
487 /* else fall through for normal semop() */
489 /* struct sembuf is the same on 32 and 64bit :)) */
490 /* sign extend semid */
491 return sys_semtimedop((int)first, compat_ptr(ptr), second,
494 /* sign extend key, nsems */
495 return sys_semget((int)first, (int)second, third);
497 /* sign extend semid, semnum */
498 return compat_sys_semctl((int)first, (int)second, third,
502 /* sign extend msqid */
503 return compat_sys_msgsnd((int)first, (int)second, third,
506 /* sign extend msqid, msgtyp */
507 return compat_sys_msgrcv((int)first, second, (int)fifth,
508 third, version, compat_ptr(ptr));
510 /* sign extend key */
511 return sys_msgget((int)first, second);
513 /* sign extend msqid */
514 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
517 /* sign extend shmid */
518 return compat_sys_shmat((int)first, second, third, version,
521 return sys_shmdt(compat_ptr(ptr));
523 /* sign extend key_t */
524 return sys_shmget((int)first, second, third);
526 /* sign extend shmid */
527 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
537 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
538 * with the corresponding cast to a signed int to insure that the
539 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
540 * and the register representation of a signed int (msr in 64-bit mode) is performed.
542 asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
544 mm_segment_t old_fs = get_fs();
549 if (offset && get_user(of, offset))
552 /* The __user pointer cast is valid because of the set_fs() */
554 up = offset ? (off_t __user *) &of : NULL;
555 ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
558 if (offset && put_user(of, offset))
564 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
566 mm_segment_t old_fs = get_fs();
571 if (offset && get_user(lof, offset))
574 /* The __user pointer cast is valid because of the set_fs() */
576 up = offset ? (loff_t __user *) &lof : NULL;
577 ret = sys_sendfile64(out_fd, in_fd, up, count);
580 if (offset && put_user(lof, offset))
586 long sys32_execve(unsigned long a0, unsigned long a1, unsigned long a2,
587 unsigned long a3, unsigned long a4, unsigned long a5,
588 struct pt_regs *regs)
593 filename = getname((char __user *) a0);
594 error = PTR_ERR(filename);
595 if (IS_ERR(filename))
597 flush_fp_to_thread(current);
598 flush_altivec_to_thread(current);
600 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
604 current->ptrace &= ~PT_DTRACE;
605 task_unlock(current);
613 /* Set up a thread for executing a new program. */
614 void start_thread32(struct pt_regs* regs, unsigned long nip, unsigned long sp)
619 * If we exec out of a kernel thread then thread.regs will not be
622 if (!current->thread.regs) {
623 unsigned long childregs = (unsigned long)current->thread_info +
625 childregs -= sizeof(struct pt_regs);
626 current->thread.regs = (struct pt_regs *)childregs;
630 * ELF_PLAT_INIT already clears all registers but it also sets r2.
631 * So just clear r2 here.
637 regs->msr = MSR_USER32;
639 if (last_task_used_math == current)
640 last_task_used_math = 0;
641 #endif /* CONFIG_SMP */
642 current->thread.fpscr = 0;
643 memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
644 #ifdef CONFIG_ALTIVEC
646 if (last_task_used_altivec == current)
647 last_task_used_altivec = 0;
648 #endif /* CONFIG_SMP */
649 memset(current->thread.vr, 0, sizeof(current->thread.vr));
650 current->thread.vscr.u[0] = 0;
651 current->thread.vscr.u[1] = 0;
652 current->thread.vscr.u[2] = 0;
653 current->thread.vscr.u[3] = 0x00010000; /* Java mode disabled */
654 current->thread.vrsave = 0;
655 current->thread.used_vr = 0;
656 #endif /* CONFIG_ALTIVEC */
659 /* Note: it is necessary to treat option as an unsigned int,
660 * with the corresponding cast to a signed int to insure that the
661 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
662 * and the register representation of a signed int (msr in 64-bit mode) is performed.
664 asmlinkage long sys32_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
666 return sys_prctl((int)option,
667 (unsigned long) arg2,
668 (unsigned long) arg3,
669 (unsigned long) arg4,
670 (unsigned long) arg5);
673 /* Note: it is necessary to treat pid as an unsigned int,
674 * with the corresponding cast to a signed int to insure that the
675 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
676 * and the register representation of a signed int (msr in 64-bit mode) is performed.
678 asmlinkage long sys32_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
682 mm_segment_t old_fs = get_fs ();
684 /* The __user pointer cast is valid because of the set_fs() */
686 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
688 if (put_compat_timespec(&t, interval))
693 asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
695 return sys_pciconfig_read((unsigned long) bus,
702 asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
704 return sys_pciconfig_write((unsigned long) bus,
711 #define IOBASE_BRIDGE_NUMBER 0
712 #define IOBASE_MEMORY 1
714 #define IOBASE_ISA_IO 3
715 #define IOBASE_ISA_MEM 4
717 asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn)
720 struct pci_controller* hose;
721 struct list_head *ln;
722 struct pci_bus *bus = NULL;
723 struct device_node *hose_node;
725 /* Argh ! Please forgive me for that hack, but that's the
726 * simplest way to get existing XFree to not lockup on some
727 * G5 machines... So when something asks for bus 0 io base
728 * (bus 0 is HT root), we return the AGP one instead.
730 #ifdef CONFIG_PPC_PMAC
731 if (systemcfg->platform == PLATFORM_POWERMAC &&
732 machine_is_compatible("MacRISC4"))
735 #endif /* CONFIG_PPC_PMAC */
737 /* That syscall isn't quite compatible with PCI domains, but it's
738 * used on pre-domains setup. We return the first match
741 for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
743 if (in_bus >= bus->number && in_bus < (bus->number + bus->subordinate))
747 if (bus == NULL || bus->sysdata == NULL)
750 hose_node = (struct device_node *)bus->sysdata;
751 hose = hose_node->phb;
754 case IOBASE_BRIDGE_NUMBER:
755 return (long)hose->first_busno;
757 return (long)hose->pci_mem_offset;
759 return (long)hose->io_base_phys;
761 return (long)isa_io_base;
765 #endif /* CONFIG_PCI */
770 /* Note: it is necessary to treat mode as an unsigned int,
771 * with the corresponding cast to a signed int to insure that the
772 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
773 * and the register representation of a signed int (msr in 64-bit mode) is performed.
775 asmlinkage long sys32_access(const char __user * filename, u32 mode)
777 return sys_access(filename, (int)mode);
781 /* Note: it is necessary to treat mode as an unsigned int,
782 * with the corresponding cast to a signed int to insure that the
783 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
784 * and the register representation of a signed int (msr in 64-bit mode) is performed.
786 asmlinkage long sys32_creat(const char __user * pathname, u32 mode)
788 return sys_creat(pathname, (int)mode);
792 /* Note: it is necessary to treat pid and options as unsigned ints,
793 * with the corresponding cast to a signed int to insure that the
794 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
795 * and the register representation of a signed int (msr in 64-bit mode) is performed.
797 asmlinkage long sys32_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
799 return sys_waitpid((int)pid, stat_addr, (int)options);
803 /* Note: it is necessary to treat gidsetsize as an unsigned int,
804 * with the corresponding cast to a signed int to insure that the
805 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
806 * and the register representation of a signed int (msr in 64-bit mode) is performed.
808 asmlinkage long sys32_getgroups(u32 gidsetsize, gid_t __user *grouplist)
810 return sys_getgroups((int)gidsetsize, grouplist);
814 /* Note: it is necessary to treat pid as an unsigned int,
815 * with the corresponding cast to a signed int to insure that the
816 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
817 * and the register representation of a signed int (msr in 64-bit mode) is performed.
819 asmlinkage long sys32_getpgid(u32 pid)
821 return sys_getpgid((int)pid);
826 /* Note: it is necessary to treat pid as an unsigned int,
827 * with the corresponding cast to a signed int to insure that the
828 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
829 * and the register representation of a signed int (msr in 64-bit mode) is performed.
831 asmlinkage long sys32_getsid(u32 pid)
833 return sys_getsid((int)pid);
837 /* Note: it is necessary to treat pid and sig as unsigned ints,
838 * with the corresponding cast to a signed int to insure that the
839 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
840 * and the register representation of a signed int (msr in 64-bit mode) is performed.
842 asmlinkage long sys32_kill(u32 pid, u32 sig)
844 return sys_kill((int)pid, (int)sig);
848 /* Note: it is necessary to treat mode as an unsigned int,
849 * with the corresponding cast to a signed int to insure that the
850 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
851 * and the register representation of a signed int (msr in 64-bit mode) is performed.
853 asmlinkage long sys32_mkdir(const char __user * pathname, u32 mode)
855 return sys_mkdir(pathname, (int)mode);
858 long sys32_nice(u32 increment)
860 /* sign extend increment */
861 return sys_nice((int)increment);
864 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
867 return sys_lseek(fd, (int)offset, origin);
871 * This is just a version for 32-bit applications which does
872 * not force O_LARGEFILE on.
874 asmlinkage long sys32_open(const char __user * filename, int flags, int mode)
879 tmp = getname(filename);
882 fd = get_unused_fd();
884 struct file * f = filp_open(tmp, flags, mode);
901 /* Note: it is necessary to treat bufsiz as an unsigned int,
902 * with the corresponding cast to a signed int to insure that the
903 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
904 * and the register representation of a signed int (msr in 64-bit mode) is performed.
906 asmlinkage long sys32_readlink(const char __user * path, char __user * buf, u32 bufsiz)
908 return sys_readlink(path, buf, (int)bufsiz);
911 /* Note: it is necessary to treat option as an unsigned int,
912 * with the corresponding cast to a signed int to insure that the
913 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
914 * and the register representation of a signed int (msr in 64-bit mode) is performed.
916 asmlinkage long sys32_sched_get_priority_max(u32 policy)
918 return sys_sched_get_priority_max((int)policy);
922 /* Note: it is necessary to treat policy as an unsigned int,
923 * with the corresponding cast to a signed int to insure that the
924 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
925 * and the register representation of a signed int (msr in 64-bit mode) is performed.
927 asmlinkage long sys32_sched_get_priority_min(u32 policy)
929 return sys_sched_get_priority_min((int)policy);
933 /* Note: it is necessary to treat pid as an unsigned int,
934 * with the corresponding cast to a signed int to insure that the
935 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
936 * and the register representation of a signed int (msr in 64-bit mode) is performed.
938 asmlinkage long sys32_sched_getparam(u32 pid, struct sched_param __user *param)
940 return sys_sched_getparam((int)pid, param);
944 /* Note: it is necessary to treat pid as an unsigned int,
945 * with the corresponding cast to a signed int to insure that the
946 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
947 * and the register representation of a signed int (msr in 64-bit mode) is performed.
949 asmlinkage long sys32_sched_getscheduler(u32 pid)
951 return sys_sched_getscheduler((int)pid);
955 /* Note: it is necessary to treat pid as an unsigned int,
956 * with the corresponding cast to a signed int to insure that the
957 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
958 * and the register representation of a signed int (msr in 64-bit mode) is performed.
960 asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param __user *param)
962 return sys_sched_setparam((int)pid, param);
966 /* Note: it is necessary to treat pid and policy as unsigned ints,
967 * with the corresponding cast to a signed int to insure that the
968 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
969 * and the register representation of a signed int (msr in 64-bit mode) is performed.
971 asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
973 return sys_sched_setscheduler((int)pid, (int)policy, param);
977 /* Note: it is necessary to treat len as an unsigned int,
978 * with the corresponding cast to a signed int to insure that the
979 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
980 * and the register representation of a signed int (msr in 64-bit mode) is performed.
982 asmlinkage long sys32_setdomainname(char __user *name, u32 len)
984 return sys_setdomainname(name, (int)len);
988 /* Note: it is necessary to treat gidsetsize as an unsigned int,
989 * with the corresponding cast to a signed int to insure that the
990 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
991 * and the register representation of a signed int (msr in 64-bit mode) is performed.
993 asmlinkage long sys32_setgroups(u32 gidsetsize, gid_t __user *grouplist)
995 return sys_setgroups((int)gidsetsize, grouplist);
999 asmlinkage long sys32_sethostname(char __user *name, u32 len)
1001 /* sign extend len */
1002 return sys_sethostname(name, (int)len);
1006 /* Note: it is necessary to treat pid and pgid as unsigned ints,
1007 * with the corresponding cast to a signed int to insure that the
1008 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1009 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1011 asmlinkage long sys32_setpgid(u32 pid, u32 pgid)
1013 return sys_setpgid((int)pid, (int)pgid);
1016 long sys32_getpriority(u32 which, u32 who)
1018 /* sign extend which and who */
1019 return sys_getpriority((int)which, (int)who);
1022 long sys32_setpriority(u32 which, u32 who, u32 niceval)
1024 /* sign extend which, who and niceval */
1025 return sys_setpriority((int)which, (int)who, (int)niceval);
1028 long sys32_ioprio_get(u32 which, u32 who)
1030 /* sign extend which and who */
1031 return sys_ioprio_get((int)which, (int)who);
1034 long sys32_ioprio_set(u32 which, u32 who, u32 ioprio)
1036 /* sign extend which, who and ioprio */
1037 return sys_ioprio_set((int)which, (int)who, (int)ioprio);
1040 /* Note: it is necessary to treat newmask as an unsigned int,
1041 * with the corresponding cast to a signed int to insure that the
1042 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1043 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1045 asmlinkage long sys32_ssetmask(u32 newmask)
1047 return sys_ssetmask((int) newmask);
1050 asmlinkage long sys32_syslog(u32 type, char __user * buf, u32 len)
1052 /* sign extend len */
1053 return sys_syslog(type, buf, (int)len);
1057 /* Note: it is necessary to treat mask as an unsigned int,
1058 * with the corresponding cast to a signed int to insure that the
1059 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1060 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1062 asmlinkage long sys32_umask(u32 mask)
1064 return sys_umask((int)mask);
1067 #ifdef CONFIG_SYSCTL
1068 struct __sysctl_args32 {
1078 asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
1080 struct __sysctl_args32 tmp;
1083 size_t __user *oldlenp = NULL;
1084 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1086 if (copy_from_user(&tmp, args, sizeof(tmp)))
1089 if (tmp.oldval && tmp.oldlenp) {
1090 /* Duh, this is ugly and might not work if sysctl_args
1091 is in read-only memory, but do_sysctl does indirectly
1092 a lot of uaccess in both directions and we'd have to
1093 basically copy the whole sysctl.c here, and
1094 glibc's __sysctl uses rw memory for the structure
1096 oldlenp = (size_t __user *)addr;
1097 if (get_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)) ||
1098 put_user(oldlen, oldlenp))
1103 error = do_sysctl(compat_ptr(tmp.name), tmp.nlen,
1104 compat_ptr(tmp.oldval), oldlenp,
1105 compat_ptr(tmp.newval), tmp.newlen);
1109 if (get_user(oldlen, oldlenp) ||
1110 put_user(oldlen, (compat_size_t __user *)compat_ptr(tmp.oldlenp)))
1113 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1119 asmlinkage int sys32_uname(struct old_utsname __user * name)
1123 down_read(&uts_sem);
1124 if (copy_to_user(name, &system_utsname, sizeof(*name)))
1127 if (!err && personality(current->personality) == PER_LINUX32) {
1128 /* change "ppc64" to "ppc" */
1129 if (__put_user(0, name->machine + 3)
1130 || __put_user(0, name->machine + 4))
1136 asmlinkage int sys32_olduname(struct oldold_utsname __user * name)
1140 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
1143 down_read(&uts_sem);
1144 error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
1145 error |= __put_user(0,name->sysname+__OLD_UTS_LEN);
1146 error |= __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
1147 error |= __put_user(0,name->nodename+__OLD_UTS_LEN);
1148 error |= __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
1149 error |= __put_user(0,name->release+__OLD_UTS_LEN);
1150 error |= __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
1151 error |= __put_user(0,name->version+__OLD_UTS_LEN);
1152 error |= __copy_to_user(&name->machine,&system_utsname.machine,__OLD_UTS_LEN);
1153 error |= __put_user(0,name->machine+__OLD_UTS_LEN);
1154 if (personality(current->personality) == PER_LINUX32) {
1155 /* change "ppc64" to "ppc" */
1156 error |= __put_user(0, name->machine + 3);
1157 error |= __put_user(0, name->machine + 4);
1162 error = error ? -EFAULT : 0;
1167 unsigned long sys32_mmap2(unsigned long addr, size_t len,
1168 unsigned long prot, unsigned long flags,
1169 unsigned long fd, unsigned long pgoff)
1171 /* This should remain 12 even if PAGE_SIZE changes */
1172 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
1175 int get_compat_timeval(struct timeval *tv, struct compat_timeval __user *ctv)
1177 return (!access_ok(VERIFY_READ, ctv, sizeof(*ctv)) ||
1178 __get_user(tv->tv_sec, &ctv->tv_sec) ||
1179 __get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
1182 asmlinkage long sys32_utimes(char __user *filename, struct compat_timeval __user *tvs)
1184 struct timeval ktvs[2], *ptr;
1188 if (get_compat_timeval(&ktvs[0], &tvs[0]) ||
1189 get_compat_timeval(&ktvs[1], &tvs[1]))
1194 return do_utimes(filename, ptr);
1197 long sys32_tgkill(u32 tgid, u32 pid, int sig)
1199 /* sign extend tgid, pid */
1200 return sys_tgkill((int)tgid, (int)pid, sig);
1204 * long long munging:
1205 * The 32 bit ABI passes long longs in an odd even register pair.
1208 compat_ssize_t sys32_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
1209 u32 reg6, u32 poshi, u32 poslo)
1211 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
1214 compat_ssize_t sys32_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
1215 u32 reg6, u32 poshi, u32 poslo)
1217 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
1220 compat_ssize_t sys32_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
1222 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
1225 asmlinkage int sys32_truncate64(const char __user * path, u32 reg4,
1226 unsigned long high, unsigned long low)
1228 return sys_truncate(path, (high << 32) | low);
1231 asmlinkage int sys32_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
1234 return sys_ftruncate(fd, (high << 32) | low);
1237 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
1240 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
1244 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
1245 size_t len, int advice)
1247 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
1251 long ppc32_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
1252 u32 len_high, u32 len_low)
1254 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low,
1255 (u64)len_high << 32 | len_low, advice);
1258 long ppc32_timer_create(clockid_t clock,
1259 struct compat_sigevent __user *ev32,
1260 timer_t __user *timer_id)
1265 mm_segment_t savefs;
1268 return sys_timer_create(clock, NULL, timer_id);
1270 if (get_compat_sigevent(&event, ev32))
1273 if (!access_ok(VERIFY_WRITE, timer_id, sizeof(timer_t)))
1278 /* The __user pointer casts are valid due to the set_fs() */
1279 err = sys_timer_create(clock,
1280 (sigevent_t __user *) &event,
1281 (timer_t __user *) &t);
1285 err = __put_user(t, timer_id);
1290 asmlinkage long sys32_add_key(const char __user *_type,
1291 const char __user *_description,
1292 const void __user *_payload,
1296 return sys_add_key(_type, _description, _payload, plen, ringid);
1299 asmlinkage long sys32_request_key(const char __user *_type,
1300 const char __user *_description,
1301 const char __user *_callout_info,
1304 return sys_request_key(_type, _description, _callout_info, destringid);