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/slab.h>
34 #include <linux/uio.h>
35 #include <linux/aio.h>
36 #include <linux/nfs_fs.h>
37 #include <linux/module.h>
38 #include <linux/sunrpc/svc.h>
39 #include <linux/nfsd/nfsd.h>
40 #include <linux/nfsd/cache.h>
41 #include <linux/nfsd/xdr.h>
42 #include <linux/nfsd/syscall.h>
43 #include <linux/poll.h>
44 #include <linux/personality.h>
45 #include <linux/stat.h>
46 #include <linux/filter.h>
47 #include <linux/highmem.h>
48 #include <linux/highuid.h>
49 #include <linux/mman.h>
50 #include <linux/ipv6.h>
52 #include <linux/icmpv6.h>
53 #include <linux/syscalls.h>
54 #include <linux/unistd.h>
55 #include <linux/sysctl.h>
56 #include <linux/binfmts.h>
57 #include <linux/dnotify.h>
58 #include <linux/security.h>
59 #include <linux/compat.h>
60 #include <linux/ptrace.h>
61 #include <linux/aio_abi.h>
62 #include <linux/elf.h>
63 #include <linux/vs_cvirt.h>
68 #include <asm/ptrace.h>
69 #include <asm/types.h>
71 #include <asm/uaccess.h>
72 #include <asm/unistd.h>
73 #include <asm/semaphore.h>
74 #include <asm/ppcdebug.h>
76 #include <asm/ppc32.h>
77 #include <asm/mmu_context.h>
81 /* readdir & getdents */
82 #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
83 #define ROUND_UP(x) (((x)+sizeof(u32)-1) & ~(sizeof(u32)-1))
85 struct old_linux_dirent32 {
88 unsigned short d_namlen;
92 struct readdir_callback32 {
93 struct old_linux_dirent32 __user * dirent;
97 static int fillonedir(void * __buf, const char * name, int namlen,
98 off_t offset, ino_t ino, unsigned int d_type)
100 struct readdir_callback32 * buf = (struct readdir_callback32 *) __buf;
101 struct old_linux_dirent32 __user * dirent;
106 dirent = buf->dirent;
107 put_user(ino, &dirent->d_ino);
108 put_user(offset, &dirent->d_offset);
109 put_user(namlen, &dirent->d_namlen);
110 copy_to_user(dirent->d_name, name, namlen);
111 put_user(0, dirent->d_name + namlen);
115 asmlinkage int old32_readdir(unsigned int fd, struct old_linux_dirent32 __user *dirent, unsigned int count)
119 struct readdir_callback32 buf;
128 error = vfs_readdir(file, (filldir_t)fillonedir, &buf);
139 struct linux_dirent32 {
142 unsigned short d_reclen;
146 struct getdents_callback32 {
147 struct linux_dirent32 __user * current_dir;
148 struct linux_dirent32 __user * previous;
153 static int filldir(void * __buf, const char * name, int namlen, off_t offset,
154 ino_t ino, unsigned int d_type)
156 struct linux_dirent32 __user * dirent;
157 struct getdents_callback32 * buf = (struct getdents_callback32 *) __buf;
158 int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 2);
160 buf->error = -EINVAL; /* only used if we fail.. */
161 if (reclen > buf->count)
163 dirent = buf->previous;
165 if (__put_user(offset, &dirent->d_off))
168 dirent = buf->current_dir;
169 if (__put_user(ino, &dirent->d_ino))
171 if (__put_user(reclen, &dirent->d_reclen))
173 if (copy_to_user(dirent->d_name, name, namlen))
175 if (__put_user(0, dirent->d_name + namlen))
177 if (__put_user(d_type, (char __user *) dirent + reclen - 1))
179 buf->previous = dirent;
180 dirent = (void __user *)dirent + reclen;
181 buf->current_dir = dirent;
182 buf->count -= reclen;
185 buf->error = -EFAULT;
189 asmlinkage long sys32_getdents(unsigned int fd, struct linux_dirent32 __user *dirent,
193 struct linux_dirent32 __user * lastdirent;
194 struct getdents_callback32 buf;
198 if (!access_ok(VERIFY_WRITE, dirent, count))
206 buf.current_dir = dirent;
211 error = vfs_readdir(file, (filldir_t)filldir, &buf);
215 lastdirent = buf.previous;
217 if (put_user(file->f_pos, &lastdirent->d_off))
220 error = count - buf.count;
229 asmlinkage long ppc32_select(u32 n, compat_ulong_t __user *inp,
230 compat_ulong_t __user *outp, compat_ulong_t __user *exp,
234 return compat_sys_select((int)n, inp, outp, exp, compat_ptr(tvp_x));
237 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
241 if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
242 !new_valid_dev(stat->rdev))
245 err = verify_area(VERIFY_WRITE, statbuf, sizeof(*statbuf));
246 err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
247 err |= __put_user(stat->ino, &statbuf->st_ino);
248 err |= __put_user(stat->mode, &statbuf->st_mode);
249 err |= __put_user(stat->nlink, &statbuf->st_nlink);
250 err |= __put_user(stat->uid, &statbuf->st_uid);
251 err |= __put_user(stat->gid, &statbuf->st_gid);
252 err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
253 err |= __put_user(stat->size, &statbuf->st_size);
254 err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime);
255 err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
256 err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
257 err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
258 err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
259 err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
260 err |= __put_user(stat->blksize, &statbuf->st_blksize);
261 err |= __put_user(stat->blocks, &statbuf->st_blocks);
262 err |= __put_user(0, &statbuf->__unused4[0]);
263 err |= __put_user(0, &statbuf->__unused4[1]);
268 /* Note: it is necessary to treat option as an unsigned int,
269 * with the corresponding cast to a signed int to insure that the
270 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
271 * and the register representation of a signed int (msr in 64-bit mode) is performed.
273 asmlinkage long sys32_sysfs(u32 option, u32 arg1, u32 arg2)
275 return sys_sysfs((int)option, arg1, arg2);
278 /* Handle adjtimex compatibility. */
281 s32 offset, freq, maxerror, esterror;
282 s32 status, constant, precision, tolerance;
283 struct compat_timeval time;
285 s32 ppsfreq, jitter, shift, stabil;
286 s32 jitcnt, calcnt, errcnt, stbcnt;
287 s32 :32; s32 :32; s32 :32; s32 :32;
288 s32 :32; s32 :32; s32 :32; s32 :32;
289 s32 :32; s32 :32; s32 :32; s32 :32;
292 extern int do_adjtimex(struct timex *);
293 extern void ppc_adjtimex(void);
295 asmlinkage long sys32_adjtimex(struct timex32 __user *utp)
300 memset(&txc, 0, sizeof(struct timex));
302 if(get_user(txc.modes, &utp->modes) ||
303 __get_user(txc.offset, &utp->offset) ||
304 __get_user(txc.freq, &utp->freq) ||
305 __get_user(txc.maxerror, &utp->maxerror) ||
306 __get_user(txc.esterror, &utp->esterror) ||
307 __get_user(txc.status, &utp->status) ||
308 __get_user(txc.constant, &utp->constant) ||
309 __get_user(txc.precision, &utp->precision) ||
310 __get_user(txc.tolerance, &utp->tolerance) ||
311 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
312 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
313 __get_user(txc.tick, &utp->tick) ||
314 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
315 __get_user(txc.jitter, &utp->jitter) ||
316 __get_user(txc.shift, &utp->shift) ||
317 __get_user(txc.stabil, &utp->stabil) ||
318 __get_user(txc.jitcnt, &utp->jitcnt) ||
319 __get_user(txc.calcnt, &utp->calcnt) ||
320 __get_user(txc.errcnt, &utp->errcnt) ||
321 __get_user(txc.stbcnt, &utp->stbcnt))
324 ret = do_adjtimex(&txc);
326 /* adjust the conversion of TB to time of day to track adjtimex */
329 if(put_user(txc.modes, &utp->modes) ||
330 __put_user(txc.offset, &utp->offset) ||
331 __put_user(txc.freq, &utp->freq) ||
332 __put_user(txc.maxerror, &utp->maxerror) ||
333 __put_user(txc.esterror, &utp->esterror) ||
334 __put_user(txc.status, &utp->status) ||
335 __put_user(txc.constant, &utp->constant) ||
336 __put_user(txc.precision, &utp->precision) ||
337 __put_user(txc.tolerance, &utp->tolerance) ||
338 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
339 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
340 __put_user(txc.tick, &utp->tick) ||
341 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
342 __put_user(txc.jitter, &utp->jitter) ||
343 __put_user(txc.shift, &utp->shift) ||
344 __put_user(txc.stabil, &utp->stabil) ||
345 __put_user(txc.jitcnt, &utp->jitcnt) ||
346 __put_user(txc.calcnt, &utp->calcnt) ||
347 __put_user(txc.errcnt, &utp->errcnt) ||
348 __put_user(txc.stbcnt, &utp->stbcnt))
355 /* These are here just in case some old sparc32 binary calls it. */
356 asmlinkage long sys32_pause(void)
358 current->state = TASK_INTERRUPTIBLE;
361 return -ERESTARTNOHAND;
366 static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i)
370 if (!access_ok(VERIFY_READ, i, sizeof(*i)))
372 if (__get_user(o->tv_sec, &i->tv_sec))
374 if (__get_user(usec, &i->tv_usec))
376 o->tv_nsec = usec * 1000;
380 static inline long put_tv32(struct compat_timeval __user *o, struct timeval *i)
382 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
383 (__put_user(i->tv_sec, &o->tv_sec) |
384 __put_user(i->tv_usec, &o->tv_usec)));
396 unsigned short procs;
401 char _f[20-2*sizeof(int)-sizeof(int)];
404 asmlinkage long sys32_sysinfo(struct sysinfo32 __user *info)
409 mm_segment_t old_fs = get_fs ();
411 /* The __user cast is valid due to set_fs() */
413 ret = sys_sysinfo((struct sysinfo __user *)&s);
416 /* Check to see if any memory value is too large for 32-bit and
417 * scale down if needed.
419 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
420 while (s.mem_unit < PAGE_SIZE) {
424 s.totalram >>=bitcount;
425 s.freeram >>= bitcount;
426 s.sharedram >>= bitcount;
427 s.bufferram >>= bitcount;
428 s.totalswap >>= bitcount;
429 s.freeswap >>= bitcount;
430 s.totalhigh >>= bitcount;
431 s.freehigh >>= bitcount;
434 err = put_user (s.uptime, &info->uptime);
435 err |= __put_user (s.loads[0], &info->loads[0]);
436 err |= __put_user (s.loads[1], &info->loads[1]);
437 err |= __put_user (s.loads[2], &info->loads[2]);
438 err |= __put_user (s.totalram, &info->totalram);
439 err |= __put_user (s.freeram, &info->freeram);
440 err |= __put_user (s.sharedram, &info->sharedram);
441 err |= __put_user (s.bufferram, &info->bufferram);
442 err |= __put_user (s.totalswap, &info->totalswap);
443 err |= __put_user (s.freeswap, &info->freeswap);
444 err |= __put_user (s.procs, &info->procs);
445 err |= __put_user (s.totalhigh, &info->totalhigh);
446 err |= __put_user (s.freehigh, &info->freehigh);
447 err |= __put_user (s.mem_unit, &info->mem_unit);
457 /* Translations due to time_t size differences. Which affects all
458 sorts of things, like timeval and itimerval. */
459 extern struct timezone sys_tz;
461 asmlinkage long sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
465 do_gettimeofday(&ktv);
466 if (put_tv32(tv, &ktv))
470 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
479 asmlinkage long sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
485 if (get_ts32(&kts, tv))
489 if (copy_from_user(&ktz, tz, sizeof(ktz)))
493 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
496 long sys32_ipc(u32 call, u32 first, u32 second, u32 third, compat_uptr_t ptr,
501 version = call >> 16; /* hack for backward compatibility */
508 /* sign extend semid */
509 return compat_sys_semtimedop((int)first,
510 compat_ptr(ptr), second,
512 /* else fall through for normal semop() */
514 /* struct sembuf is the same on 32 and 64bit :)) */
515 /* sign extend semid */
516 return sys_semtimedop((int)first, compat_ptr(ptr), second,
519 /* sign extend key, nsems */
520 return sys_semget((int)first, (int)second, third);
522 /* sign extend semid, semnum */
523 return compat_sys_semctl((int)first, (int)second, third,
527 /* sign extend msqid */
528 return compat_sys_msgsnd((int)first, (int)second, third,
531 /* sign extend msqid, msgtyp */
532 return compat_sys_msgrcv((int)first, second, (int)fifth,
533 third, version, compat_ptr(ptr));
535 /* sign extend key */
536 return sys_msgget((int)first, second);
538 /* sign extend msqid */
539 return compat_sys_msgctl((int)first, second, compat_ptr(ptr));
542 /* sign extend shmid */
543 return compat_sys_shmat((int)first, second, third, version,
546 return sys_shmdt(compat_ptr(ptr));
548 /* sign extend key_t */
549 return sys_shmget((int)first, second, third);
551 /* sign extend shmid */
552 return compat_sys_shmctl((int)first, second, compat_ptr(ptr));
561 /* Note: it is necessary to treat out_fd and in_fd as unsigned ints,
562 * with the corresponding cast to a signed int to insure that the
563 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
564 * and the register representation of a signed int (msr in 64-bit mode) is performed.
566 asmlinkage long sys32_sendfile(u32 out_fd, u32 in_fd, compat_off_t __user * offset, u32 count)
568 mm_segment_t old_fs = get_fs();
573 if (offset && get_user(of, offset))
576 /* The __user pointer cast is valid because of the set_fs() */
578 up = offset ? (off_t __user *) &of : NULL;
579 ret = sys_sendfile((int)out_fd, (int)in_fd, up, count);
582 if (offset && put_user(of, offset))
588 asmlinkage int sys32_sendfile64(int out_fd, int in_fd, compat_loff_t __user *offset, s32 count)
590 mm_segment_t old_fs = get_fs();
595 if (offset && get_user(lof, offset))
598 /* The __user pointer cast is valid because of the set_fs() */
600 up = offset ? (loff_t __user *) &lof : NULL;
601 ret = sys_sendfile64(out_fd, in_fd, up, count);
604 if (offset && put_user(lof, offset))
610 long sys32_execve(unsigned long a0, unsigned long a1, unsigned long a2,
611 unsigned long a3, unsigned long a4, unsigned long a5,
612 struct pt_regs *regs)
617 filename = getname((char __user *) a0);
618 error = PTR_ERR(filename);
619 if (IS_ERR(filename))
621 flush_fp_to_thread(current);
622 flush_altivec_to_thread(current);
624 error = compat_do_execve(filename, compat_ptr(a1), compat_ptr(a2), regs);
627 current->ptrace &= ~PT_DTRACE;
634 /* Set up a thread for executing a new program. */
635 void start_thread32(struct pt_regs* regs, unsigned long nip, unsigned long sp)
638 memset(regs->gpr, 0, sizeof(regs->gpr));
639 memset(®s->ctr, 0, 4 * sizeof(regs->ctr));
642 regs->msr = MSR_USER32;
644 if (last_task_used_math == current)
645 last_task_used_math = 0;
646 #endif /* CONFIG_SMP */
647 current->thread.fpscr = 0;
648 memset(current->thread.fpr, 0, sizeof(current->thread.fpr));
649 #ifdef CONFIG_ALTIVEC
651 if (last_task_used_altivec == current)
652 last_task_used_altivec = 0;
653 #endif /* CONFIG_SMP */
654 memset(current->thread.vr, 0, sizeof(current->thread.vr));
655 current->thread.vscr.u[0] = 0;
656 current->thread.vscr.u[1] = 0;
657 current->thread.vscr.u[2] = 0;
658 current->thread.vscr.u[3] = 0x00010000; /* Java mode disabled */
659 current->thread.vrsave = 0;
660 current->thread.used_vr = 0;
661 #endif /* CONFIG_ALTIVEC */
664 /* Note: it is necessary to treat option as an unsigned int,
665 * with the corresponding cast to a signed int to insure that the
666 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
667 * and the register representation of a signed int (msr in 64-bit mode) is performed.
669 asmlinkage long sys32_prctl(u32 option, u32 arg2, u32 arg3, u32 arg4, u32 arg5)
671 return sys_prctl((int)option,
672 (unsigned long) arg2,
673 (unsigned long) arg3,
674 (unsigned long) arg4,
675 (unsigned long) arg5);
678 /* Note: it is necessary to treat pid as an unsigned int,
679 * with the corresponding cast to a signed int to insure that the
680 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
681 * and the register representation of a signed int (msr in 64-bit mode) is performed.
683 asmlinkage long sys32_sched_rr_get_interval(u32 pid, struct compat_timespec __user *interval)
687 mm_segment_t old_fs = get_fs ();
689 /* The __user pointer cast is valid because of the set_fs() */
691 ret = sys_sched_rr_get_interval((int)pid, (struct timespec __user *) &t);
693 if (put_compat_timespec(&t, interval))
698 asmlinkage int sys32_pciconfig_read(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
700 return sys_pciconfig_read((unsigned long) bus,
704 (unsigned char __user *)AA(ubuf));
707 asmlinkage int sys32_pciconfig_write(u32 bus, u32 dfn, u32 off, u32 len, u32 ubuf)
709 return sys_pciconfig_write((unsigned long) bus,
713 (unsigned char __user *)AA(ubuf));
716 #define IOBASE_BRIDGE_NUMBER 0
717 #define IOBASE_MEMORY 1
719 #define IOBASE_ISA_IO 3
720 #define IOBASE_ISA_MEM 4
722 asmlinkage int sys32_pciconfig_iobase(u32 which, u32 in_bus, u32 in_devfn)
724 struct pci_controller* hose;
725 struct list_head *ln;
726 struct pci_bus *bus = NULL;
727 struct device_node *hose_node;
729 /* Argh ! Please forgive me for that hack, but that's the
730 * simplest way to get existing XFree to not lockup on some
731 * G5 machines... So when something asks for bus 0 io base
732 * (bus 0 is HT root), we return the AGP one instead.
734 #ifdef CONFIG_PPC_PMAC
735 if (systemcfg->platform == PLATFORM_POWERMAC &&
736 machine_is_compatible("MacRISC4"))
739 #endif /* CONFIG_PPC_PMAC */
741 /* That syscall isn't quite compatible with PCI domains, but it's
742 * used on pre-domains setup. We return the first match
745 for (ln = pci_root_buses.next; ln != &pci_root_buses; ln = ln->next) {
747 if (in_bus >= bus->number && in_bus < (bus->number + bus->subordinate))
751 if (bus == NULL || bus->sysdata == NULL)
754 hose_node = (struct device_node *)bus->sysdata;
755 hose = hose_node->phb;
758 case IOBASE_BRIDGE_NUMBER:
759 return (long)hose->first_busno;
761 return (long)hose->pci_mem_offset;
763 return (long)hose->io_base_phys;
765 return (long)isa_io_base;
774 asmlinkage int ppc64_newuname(struct new_utsname __user * name)
776 int errno = sys_newuname(name);
778 if (current->personality == PER_LINUX32 && !errno) {
779 if(copy_to_user(name->machine, "ppc\0\0", 8)) {
786 asmlinkage int ppc64_personality(unsigned long personality)
789 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
790 personality = PER_LINUX32;
791 ret = sys_personality(personality);
792 if (ret == PER_LINUX32)
799 /* Note: it is necessary to treat mode as an unsigned int,
800 * with the corresponding cast to a signed int to insure that the
801 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
802 * and the register representation of a signed int (msr in 64-bit mode) is performed.
804 asmlinkage long sys32_access(const char __user * filename, u32 mode)
806 return sys_access(filename, (int)mode);
810 /* Note: it is necessary to treat mode as an unsigned int,
811 * with the corresponding cast to a signed int to insure that the
812 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
813 * and the register representation of a signed int (msr in 64-bit mode) is performed.
815 asmlinkage long sys32_creat(const char __user * pathname, u32 mode)
817 return sys_creat(pathname, (int)mode);
821 /* Note: it is necessary to treat pid and options as unsigned ints,
822 * with the corresponding cast to a signed int to insure that the
823 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
824 * and the register representation of a signed int (msr in 64-bit mode) is performed.
826 asmlinkage long sys32_waitpid(u32 pid, unsigned int __user * stat_addr, u32 options)
828 return sys_waitpid((int)pid, stat_addr, (int)options);
832 /* Note: it is necessary to treat gidsetsize as an unsigned int,
833 * with the corresponding cast to a signed int to insure that the
834 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
835 * and the register representation of a signed int (msr in 64-bit mode) is performed.
837 asmlinkage long sys32_getgroups(u32 gidsetsize, gid_t __user *grouplist)
839 return sys_getgroups((int)gidsetsize, grouplist);
843 /* Note: it is necessary to treat pid as an unsigned int,
844 * with the corresponding cast to a signed int to insure that the
845 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
846 * and the register representation of a signed int (msr in 64-bit mode) is performed.
848 asmlinkage long sys32_getpgid(u32 pid)
850 return sys_getpgid((int)pid);
854 /* Note: it is necessary to treat which and who as unsigned ints,
855 * with the corresponding cast to a signed int to insure that the
856 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
857 * and the register representation of a signed int (msr in 64-bit mode) is performed.
859 asmlinkage long sys32_getpriority(u32 which, u32 who)
861 return sys_getpriority((int)which, (int)who);
865 /* Note: it is necessary to treat pid as an unsigned int,
866 * with the corresponding cast to a signed int to insure that the
867 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
868 * and the register representation of a signed int (msr in 64-bit mode) is performed.
870 asmlinkage long sys32_getsid(u32 pid)
872 return sys_getsid((int)pid);
876 /* Note: it is necessary to treat pid and sig as unsigned ints,
877 * with the corresponding cast to a signed int to insure that the
878 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
879 * and the register representation of a signed int (msr in 64-bit mode) is performed.
881 asmlinkage long sys32_kill(u32 pid, u32 sig)
883 return sys_kill((int)pid, (int)sig);
887 /* Note: it is necessary to treat mode as an unsigned int,
888 * with the corresponding cast to a signed int to insure that the
889 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
890 * and the register representation of a signed int (msr in 64-bit mode) is performed.
892 asmlinkage long sys32_mkdir(const char __user * pathname, u32 mode)
894 return sys_mkdir(pathname, (int)mode);
897 long sys32_nice(u32 increment)
899 /* sign extend increment */
900 return sys_nice((int)increment);
903 off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
906 return sys_lseek(fd, (int)offset, origin);
910 * This is just a version for 32-bit applications which does
911 * not force O_LARGEFILE on.
913 asmlinkage long sys32_open(const char __user * filename, int flags, int mode)
918 tmp = getname(filename);
921 fd = get_unused_fd();
923 struct file * f = filp_open(tmp, flags, mode);
940 /* Note: it is necessary to treat bufsiz as an unsigned int,
941 * with the corresponding cast to a signed int to insure that the
942 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
943 * and the register representation of a signed int (msr in 64-bit mode) is performed.
945 asmlinkage long sys32_readlink(const char __user * path, char __user * buf, u32 bufsiz)
947 return sys_readlink(path, buf, (int)bufsiz);
950 /* Note: it is necessary to treat option as an unsigned int,
951 * with the corresponding cast to a signed int to insure that the
952 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
953 * and the register representation of a signed int (msr in 64-bit mode) is performed.
955 asmlinkage long sys32_sched_get_priority_max(u32 policy)
957 return sys_sched_get_priority_max((int)policy);
961 /* Note: it is necessary to treat policy as an unsigned int,
962 * with the corresponding cast to a signed int to insure that the
963 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
964 * and the register representation of a signed int (msr in 64-bit mode) is performed.
966 asmlinkage long sys32_sched_get_priority_min(u32 policy)
968 return sys_sched_get_priority_min((int)policy);
972 /* Note: it is necessary to treat pid as an unsigned int,
973 * with the corresponding cast to a signed int to insure that the
974 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
975 * and the register representation of a signed int (msr in 64-bit mode) is performed.
977 asmlinkage long sys32_sched_getparam(u32 pid, struct sched_param __user *param)
979 return sys_sched_getparam((int)pid, param);
983 /* Note: it is necessary to treat pid as an unsigned int,
984 * with the corresponding cast to a signed int to insure that the
985 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
986 * and the register representation of a signed int (msr in 64-bit mode) is performed.
988 asmlinkage long sys32_sched_getscheduler(u32 pid)
990 return sys_sched_getscheduler((int)pid);
994 /* Note: it is necessary to treat pid as an unsigned int,
995 * with the corresponding cast to a signed int to insure that the
996 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
997 * and the register representation of a signed int (msr in 64-bit mode) is performed.
999 asmlinkage long sys32_sched_setparam(u32 pid, struct sched_param __user *param)
1001 return sys_sched_setparam((int)pid, param);
1005 /* Note: it is necessary to treat pid and policy as unsigned ints,
1006 * with the corresponding cast to a signed int to insure that the
1007 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1008 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1010 asmlinkage long sys32_sched_setscheduler(u32 pid, u32 policy, struct sched_param __user *param)
1012 return sys_sched_setscheduler((int)pid, (int)policy, param);
1016 /* Note: it is necessary to treat len as an unsigned int,
1017 * with the corresponding cast to a signed int to insure that the
1018 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1019 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1021 asmlinkage long sys32_setdomainname(char __user *name, u32 len)
1023 return sys_setdomainname(name, (int)len);
1027 /* Note: it is necessary to treat gidsetsize as an unsigned int,
1028 * with the corresponding cast to a signed int to insure that the
1029 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1030 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1032 asmlinkage long sys32_setgroups(u32 gidsetsize, gid_t __user *grouplist)
1034 return sys_setgroups((int)gidsetsize, grouplist);
1038 asmlinkage long sys32_sethostname(char __user *name, u32 len)
1040 /* sign extend len */
1041 return sys_sethostname(name, (int)len);
1045 /* Note: it is necessary to treat pid and pgid as unsigned ints,
1046 * with the corresponding cast to a signed int to insure that the
1047 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1048 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1050 asmlinkage long sys32_setpgid(u32 pid, u32 pgid)
1052 return sys_setpgid((int)pid, (int)pgid);
1056 long sys32_setpriority(u32 which, u32 who, u32 niceval)
1058 /* sign extend which, who and niceval */
1059 return sys_setpriority((int)which, (int)who, (int)niceval);
1062 /* Note: it is necessary to treat newmask as an unsigned int,
1063 * with the corresponding cast to a signed int to insure that the
1064 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1065 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1067 asmlinkage long sys32_ssetmask(u32 newmask)
1069 return sys_ssetmask((int) newmask);
1072 asmlinkage long sys32_syslog(u32 type, char __user * buf, u32 len)
1074 /* sign extend len */
1075 return sys_syslog(type, buf, (int)len);
1079 /* Note: it is necessary to treat mask as an unsigned int,
1080 * with the corresponding cast to a signed int to insure that the
1081 * proper conversion (sign extension) between the register representation of a signed int (msr in 32-bit mode)
1082 * and the register representation of a signed int (msr in 64-bit mode) is performed.
1084 asmlinkage long sys32_umask(u32 mask)
1086 return sys_umask((int)mask);
1089 struct __sysctl_args32 {
1099 extern asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
1101 struct __sysctl_args32 tmp;
1104 size_t __user *oldlenp = NULL;
1105 unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7;
1107 if (copy_from_user(&tmp, args, sizeof(tmp)))
1110 if (tmp.oldval && tmp.oldlenp) {
1111 /* Duh, this is ugly and might not work if sysctl_args
1112 is in read-only memory, but do_sysctl does indirectly
1113 a lot of uaccess in both directions and we'd have to
1114 basically copy the whole sysctl.c here, and
1115 glibc's __sysctl uses rw memory for the structure
1117 oldlenp = (size_t __user *)addr;
1118 if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) ||
1119 put_user(oldlen, oldlenp))
1124 error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval),
1125 oldlenp, (void __user *)A(tmp.newval), tmp.newlen);
1129 if (get_user(oldlen, oldlenp) ||
1130 put_user(oldlen, (u32 __user *)A(tmp.oldlenp)))
1133 copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
1138 asmlinkage long sys32_time(compat_time_t __user * tloc)
1144 do_gettimeofday( &tv );
1148 if (put_user(secs,tloc))
1155 asmlinkage int sys32_olduname(struct oldold_utsname __user * name)
1158 struct new_utsname *ptr;
1162 if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
1165 down_read(&uts_sem);
1166 ptr = vx_new_utsname();
1167 error = __copy_to_user(&name->sysname,ptr->sysname,__OLD_UTS_LEN);
1168 error -= __put_user(0,name->sysname+__OLD_UTS_LEN);
1169 error -= __copy_to_user(&name->nodename,ptr->nodename,__OLD_UTS_LEN);
1170 error -= __put_user(0,name->nodename+__OLD_UTS_LEN);
1171 error -= __copy_to_user(&name->release,ptr->release,__OLD_UTS_LEN);
1172 error -= __put_user(0,name->release+__OLD_UTS_LEN);
1173 error -= __copy_to_user(&name->version,ptr->version,__OLD_UTS_LEN);
1174 error -= __put_user(0,name->version+__OLD_UTS_LEN);
1175 error -= __copy_to_user(&name->machine,ptr->machine,__OLD_UTS_LEN);
1176 error = __put_user(0,name->machine+__OLD_UTS_LEN);
1179 error = error ? -EFAULT : 0;
1184 unsigned long sys32_mmap2(unsigned long addr, size_t len,
1185 unsigned long prot, unsigned long flags,
1186 unsigned long fd, unsigned long pgoff)
1188 /* This should remain 12 even if PAGE_SIZE changes */
1189 return sys_mmap(addr, len, prot, flags, fd, pgoff << 12);
1192 int get_compat_timeval(struct timeval *tv, struct compat_timeval __user *ctv)
1194 return (verify_area(VERIFY_READ, ctv, sizeof(*ctv)) ||
1195 __get_user(tv->tv_sec, &ctv->tv_sec) ||
1196 __get_user(tv->tv_usec, &ctv->tv_usec)) ? -EFAULT : 0;
1199 asmlinkage long sys32_utimes(char __user *filename, struct compat_timeval __user *tvs)
1201 struct timeval ktvs[2], *ptr;
1205 if (get_compat_timeval(&ktvs[0], &tvs[0]) ||
1206 get_compat_timeval(&ktvs[1], &tvs[1]))
1211 return do_utimes(filename, ptr);
1214 long sys32_tgkill(u32 tgid, u32 pid, int sig)
1216 /* sign extend tgid, pid */
1217 return sys_tgkill((int)tgid, (int)pid, sig);
1221 * long long munging:
1222 * The 32 bit ABI passes long longs in an odd even register pair.
1225 compat_ssize_t sys32_pread64(unsigned int fd, char __user *ubuf, compat_size_t count,
1226 u32 reg6, u32 poshi, u32 poslo)
1228 return sys_pread64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
1231 compat_ssize_t sys32_pwrite64(unsigned int fd, char __user *ubuf, compat_size_t count,
1232 u32 reg6, u32 poshi, u32 poslo)
1234 return sys_pwrite64(fd, ubuf, count, ((loff_t)poshi << 32) | poslo);
1237 compat_ssize_t sys32_readahead(int fd, u32 r4, u32 offhi, u32 offlo, u32 count)
1239 return sys_readahead(fd, ((loff_t)offhi << 32) | offlo, count);
1242 asmlinkage int sys32_truncate64(const char __user * path, u32 reg4,
1243 unsigned long high, unsigned long low)
1245 return sys_truncate(path, (high << 32) | low);
1248 asmlinkage int sys32_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
1251 return sys_ftruncate(fd, (high << 32) | low);
1254 long ppc32_lookup_dcookie(u32 cookie_high, u32 cookie_low, char __user *buf,
1257 return sys_lookup_dcookie((u64)cookie_high << 32 | cookie_low,
1261 long ppc32_fadvise64(int fd, u32 unused, u32 offset_high, u32 offset_low,
1262 size_t len, int advice)
1264 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low, len,
1268 long ppc32_fadvise64_64(int fd, int advice, u32 offset_high, u32 offset_low,
1269 u32 len_high, u32 len_low)
1271 return sys_fadvise64(fd, (u64)offset_high << 32 | offset_low,
1272 (u64)len_high << 32 | len_low, advice);
1275 extern asmlinkage long sys_timer_create(clockid_t, sigevent_t __user *, timer_t __user *);
1277 long ppc32_timer_create(clockid_t clock,
1278 struct compat_sigevent __user *ev32,
1279 timer_t __user *timer_id)
1284 mm_segment_t savefs;
1287 return sys_timer_create(clock, NULL, timer_id);
1289 memset(&event, 0, sizeof(event));
1290 if (!access_ok(VERIFY_READ, ev32, sizeof(struct compat_sigevent))
1291 || __get_user(event.sigev_value.sival_int,
1292 &ev32->sigev_value.sival_int)
1293 || __get_user(event.sigev_signo, &ev32->sigev_signo)
1294 || __get_user(event.sigev_notify, &ev32->sigev_notify)
1295 || __get_user(event.sigev_notify_thread_id,
1296 &ev32->sigev_notify_thread_id))
1299 if (!access_ok(VERIFY_WRITE, timer_id, sizeof(timer_t)))
1304 /* The __user pointer casts are valid due to the set_fs() */
1305 err = sys_timer_create(clock,
1306 (sigevent_t __user *) &event,
1307 (timer_t __user *) &t);
1311 err = __put_user(t, timer_id);