2 * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Derived from sys_sparc32.c.
4 * Copyright (C) 2000 VA Linux Co
5 * Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
6 * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
7 * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
8 * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
9 * Copyright (C) 2000-2003 Hewlett-Packard Co
10 * David Mosberger-Tang <davidm@hpl.hp.com>
11 * Copyright (C) 2004 Gordon Jin <gordon.jin@intel.com>
13 * These routines maintain argument size conversion between 32bit and 64bit
17 #include <linux/config.h>
18 #include <linux/kernel.h>
19 #include <linux/syscalls.h>
20 #include <linux/sysctl.h>
21 #include <linux/sched.h>
23 #include <linux/file.h>
24 #include <linux/signal.h>
25 #include <linux/resource.h>
26 #include <linux/times.h>
27 #include <linux/utsname.h>
28 #include <linux/timex.h>
29 #include <linux/smp.h>
30 #include <linux/smp_lock.h>
31 #include <linux/sem.h>
32 #include <linux/msg.h>
34 #include <linux/shm.h>
35 #include <linux/slab.h>
36 #include <linux/uio.h>
37 #include <linux/nfs_fs.h>
38 #include <linux/quota.h>
39 #include <linux/sunrpc/svc.h>
40 #include <linux/nfsd/nfsd.h>
41 #include <linux/nfsd/cache.h>
42 #include <linux/nfsd/xdr.h>
43 #include <linux/nfsd/syscall.h>
44 #include <linux/poll.h>
45 #include <linux/eventpoll.h>
46 #include <linux/personality.h>
47 #include <linux/ptrace.h>
48 #include <linux/stat.h>
49 #include <linux/ipc.h>
50 #include <linux/compat.h>
51 #include <linux/vfs.h>
52 #include <linux/mman.h>
54 #include <asm/intrinsics.h>
55 #include <asm/semaphore.h>
56 #include <asm/types.h>
57 #include <asm/uaccess.h>
58 #include <asm/unistd.h>
68 # define DBG(fmt...) printk(KERN_DEBUG fmt)
73 #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
75 #define OFFSET4K(a) ((a) & 0xfff)
76 #define PAGE_START(addr) ((addr) & PAGE_MASK)
77 #define MINSIGSTKSZ_IA32 2048
79 #define high2lowuid(uid) ((uid) > 65535 ? 65534 : (uid))
80 #define high2lowgid(gid) ((gid) > 65535 ? 65534 : (gid))
83 * Anything that modifies or inspects ia32 user virtual memory must hold this semaphore
86 /* XXX make per-mm: */
87 static DECLARE_MUTEX(ia32_mmap_sem);
90 sys32_execve (char __user *name, compat_uptr_t __user *argv, compat_uptr_t __user *envp,
95 unsigned long old_map_base, old_task_size, tssd;
97 filename = getname(name);
98 error = PTR_ERR(filename);
102 old_map_base = current->thread.map_base;
103 old_task_size = current->thread.task_size;
104 tssd = ia64_get_kr(IA64_KR_TSSD);
106 /* we may be exec'ing a 64-bit process: reset map base, task-size, and io-base: */
107 current->thread.map_base = DEFAULT_MAP_BASE;
108 current->thread.task_size = DEFAULT_TASK_SIZE;
109 ia64_set_kr(IA64_KR_IO_BASE, current->thread.old_iob);
110 ia64_set_kr(IA64_KR_TSSD, current->thread.old_k1);
112 error = compat_do_execve(filename, argv, envp, regs);
116 /* oops, execve failed, switch back to old values... */
117 ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE);
118 ia64_set_kr(IA64_KR_TSSD, tssd);
119 current->thread.map_base = old_map_base;
120 current->thread.task_size = old_task_size;
126 int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
130 if ((u64) stat->size > MAX_NON_LFS ||
131 !old_valid_dev(stat->dev) ||
132 !old_valid_dev(stat->rdev))
135 if (clear_user(ubuf, sizeof(*ubuf)))
138 err = __put_user(old_encode_dev(stat->dev), &ubuf->st_dev);
139 err |= __put_user(stat->ino, &ubuf->st_ino);
140 err |= __put_user(stat->mode, &ubuf->st_mode);
141 err |= __put_user(stat->nlink, &ubuf->st_nlink);
142 err |= __put_user(high2lowuid(stat->uid), &ubuf->st_uid);
143 err |= __put_user(high2lowgid(stat->gid), &ubuf->st_gid);
144 err |= __put_user(old_encode_dev(stat->rdev), &ubuf->st_rdev);
145 err |= __put_user(stat->size, &ubuf->st_size);
146 err |= __put_user(stat->atime.tv_sec, &ubuf->st_atime);
147 err |= __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec);
148 err |= __put_user(stat->mtime.tv_sec, &ubuf->st_mtime);
149 err |= __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec);
150 err |= __put_user(stat->ctime.tv_sec, &ubuf->st_ctime);
151 err |= __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec);
152 err |= __put_user(stat->blksize, &ubuf->st_blksize);
153 err |= __put_user(stat->blocks, &ubuf->st_blocks);
157 #if PAGE_SHIFT > IA32_PAGE_SHIFT
161 get_page_prot (struct vm_area_struct *vma, unsigned long addr)
165 if (!vma || vma->vm_start > addr)
168 if (vma->vm_flags & VM_READ)
170 if (vma->vm_flags & VM_WRITE)
172 if (vma->vm_flags & VM_EXEC)
178 * Map a subpage by creating an anonymous page that contains the union of the old page and
182 mmap_subpage (struct file *file, unsigned long start, unsigned long end, int prot, int flags,
187 unsigned long ret = 0;
188 struct vm_area_struct *vma = find_vma(current->mm, start);
189 int old_prot = get_page_prot(vma, start);
191 DBG("mmap_subpage(file=%p,start=0x%lx,end=0x%lx,prot=%x,flags=%x,off=0x%llx)\n",
192 file, start, end, prot, flags, off);
195 /* Optimize the case where the old mmap and the new mmap are both anonymous */
196 if ((old_prot & PROT_WRITE) && (flags & MAP_ANONYMOUS) && !vma->vm_file) {
197 if (clear_user((void __user *) start, end - start)) {
204 page = (void *) get_zeroed_page(GFP_KERNEL);
209 copy_from_user(page, (void __user *) PAGE_START(start), PAGE_SIZE);
211 down_write(¤t->mm->mmap_sem);
213 ret = do_mmap(NULL, PAGE_START(start), PAGE_SIZE, prot | PROT_WRITE,
214 flags | MAP_FIXED | MAP_ANONYMOUS, 0);
216 up_write(¤t->mm->mmap_sem);
218 if (IS_ERR((void *) ret))
222 /* copy back the old page contents. */
223 if (offset_in_page(start))
224 copy_to_user((void __user *) PAGE_START(start), page,
225 offset_in_page(start));
226 if (offset_in_page(end))
227 copy_to_user((void __user *) end, page + offset_in_page(end),
228 PAGE_SIZE - offset_in_page(end));
231 if (!(flags & MAP_ANONYMOUS)) {
232 /* read the file contents */
233 inode = file->f_dentry->d_inode;
234 if (!inode->i_fop || !file->f_op->read
235 || ((*file->f_op->read)(file, (char __user *) start, end - start, &off) < 0))
243 if (!(prot & PROT_WRITE))
244 ret = sys_mprotect(PAGE_START(start), PAGE_SIZE, prot | old_prot);
247 free_page((unsigned long) page);
251 /* SLAB cache for partial_page structures */
252 kmem_cache_t *partial_page_cachep;
255 * init partial_page_list.
256 * return 0 means kmalloc fail.
258 struct partial_page_list*
259 ia32_init_pp_list(void)
261 struct partial_page_list *p;
263 if ((p = kmalloc(sizeof(*p), GFP_KERNEL)) == NULL)
268 atomic_set(&p->pp_count, 1);
273 * Search for the partial page with @start in partial page list @ppl.
274 * If finds the partial page, return the found partial page.
275 * Else, return 0 and provide @pprev, @rb_link, @rb_parent to
276 * be used by later __ia32_insert_pp().
278 static struct partial_page *
279 __ia32_find_pp(struct partial_page_list *ppl, unsigned int start,
280 struct partial_page **pprev, struct rb_node ***rb_link,
281 struct rb_node **rb_parent)
283 struct partial_page *pp;
284 struct rb_node **__rb_link, *__rb_parent, *rb_prev;
287 if (pp && pp->base == start)
290 __rb_link = &ppl->ppl_rb.rb_node;
291 rb_prev = __rb_parent = NULL;
294 __rb_parent = *__rb_link;
295 pp = rb_entry(__rb_parent, struct partial_page, pp_rb);
297 if (pp->base == start) {
300 } else if (pp->base < start) {
301 rb_prev = __rb_parent;
302 __rb_link = &__rb_parent->rb_right;
304 __rb_link = &__rb_parent->rb_left;
308 *rb_link = __rb_link;
309 *rb_parent = __rb_parent;
312 *pprev = rb_entry(rb_prev, struct partial_page, pp_rb);
317 * insert @pp into @ppl.
320 __ia32_insert_pp(struct partial_page_list *ppl, struct partial_page *pp,
321 struct partial_page *prev, struct rb_node **rb_link,
322 struct rb_node *rb_parent)
326 pp->next = prev->next;
331 pp->next = rb_entry(rb_parent,
332 struct partial_page, pp_rb);
338 rb_link_node(&pp->pp_rb, rb_parent, rb_link);
339 rb_insert_color(&pp->pp_rb, &ppl->ppl_rb);
345 * delete @pp from partial page list @ppl.
348 __ia32_delete_pp(struct partial_page_list *ppl, struct partial_page *pp,
349 struct partial_page *prev)
352 prev->next = pp->next;
353 if (ppl->pp_hint == pp)
356 ppl->pp_head = pp->next;
357 if (ppl->pp_hint == pp)
358 ppl->pp_hint = pp->next;
360 rb_erase(&pp->pp_rb, &ppl->ppl_rb);
361 kmem_cache_free(partial_page_cachep, pp);
364 static struct partial_page *
365 __pp_prev(struct partial_page *pp)
367 struct rb_node *prev = rb_prev(&pp->pp_rb);
369 return rb_entry(prev, struct partial_page, pp_rb);
375 * Delete partial pages with address between @start and @end.
376 * @start and @end are page aligned.
379 __ia32_delete_pp_range(unsigned int start, unsigned int end)
381 struct partial_page *pp, *prev;
382 struct rb_node **rb_link, *rb_parent;
387 pp = __ia32_find_pp(current->thread.ppl, start, &prev,
388 &rb_link, &rb_parent);
390 prev = __pp_prev(pp);
395 pp = current->thread.ppl->pp_head;
398 while (pp && pp->base < end) {
399 struct partial_page *tmp = pp->next;
400 __ia32_delete_pp(current->thread.ppl, pp, prev);
406 * Set the range between @start and @end in bitmap.
407 * @start and @end should be IA32 page aligned and in the same IA64 page.
410 __ia32_set_pp(unsigned int start, unsigned int end, int flags)
412 struct partial_page *pp, *prev;
413 struct rb_node ** rb_link, *rb_parent;
414 unsigned int pstart, start_bit, end_bit, i;
416 pstart = PAGE_START(start);
417 start_bit = (start % PAGE_SIZE) / IA32_PAGE_SIZE;
418 end_bit = (end % PAGE_SIZE) / IA32_PAGE_SIZE;
420 end_bit = PAGE_SIZE / IA32_PAGE_SIZE;
421 pp = __ia32_find_pp(current->thread.ppl, pstart, &prev,
422 &rb_link, &rb_parent);
424 for (i = start_bit; i < end_bit; i++)
425 set_bit(i, &pp->bitmap);
427 * Check: if this partial page has been set to a full page,
430 if (find_first_zero_bit(&pp->bitmap, sizeof(pp->bitmap)*8) >=
431 PAGE_SIZE/IA32_PAGE_SIZE) {
432 __ia32_delete_pp(current->thread.ppl, pp, __pp_prev(pp));
438 * MAP_FIXED may lead to overlapping mmap.
439 * In this case, the requested mmap area may already mmaped as a full
440 * page. So check vma before adding a new partial page.
442 if (flags & MAP_FIXED) {
443 struct vm_area_struct *vma = find_vma(current->mm, pstart);
444 if (vma && vma->vm_start <= pstart)
448 /* new a partial_page */
449 pp = kmem_cache_alloc(partial_page_cachep, GFP_KERNEL);
454 for (i=start_bit; i<end_bit; i++)
455 set_bit(i, &(pp->bitmap));
457 __ia32_insert_pp(current->thread.ppl, pp, prev, rb_link, rb_parent);
462 * @start and @end should be IA32 page aligned, but don't need to be in the
463 * same IA64 page. Split @start and @end to make sure they're in the same IA64
464 * page, then call __ia32_set_pp().
467 ia32_set_pp(unsigned int start, unsigned int end, int flags)
469 down_write(¤t->mm->mmap_sem);
470 if (flags & MAP_FIXED) {
472 * MAP_FIXED may lead to overlapping mmap. When this happens,
473 * a series of complete IA64 pages results in deletion of
474 * old partial pages in that range.
476 __ia32_delete_pp_range(PAGE_ALIGN(start), PAGE_START(end));
479 if (end < PAGE_ALIGN(start)) {
480 __ia32_set_pp(start, end, flags);
482 if (offset_in_page(start))
483 __ia32_set_pp(start, PAGE_ALIGN(start), flags);
484 if (offset_in_page(end))
485 __ia32_set_pp(PAGE_START(end), end, flags);
487 up_write(¤t->mm->mmap_sem);
491 * Unset the range between @start and @end in bitmap.
492 * @start and @end should be IA32 page aligned and in the same IA64 page.
493 * After doing that, if the bitmap is 0, then free the page and return 1,
495 * If not find the partial page in the list, then
496 * If the vma exists, then the full page is set to a partial page;
497 * Else return -ENOMEM.
500 __ia32_unset_pp(unsigned int start, unsigned int end)
502 struct partial_page *pp, *prev;
503 struct rb_node ** rb_link, *rb_parent;
504 unsigned int pstart, start_bit, end_bit, i;
505 struct vm_area_struct *vma;
507 pstart = PAGE_START(start);
508 start_bit = (start % PAGE_SIZE) / IA32_PAGE_SIZE;
509 end_bit = (end % PAGE_SIZE) / IA32_PAGE_SIZE;
511 end_bit = PAGE_SIZE / IA32_PAGE_SIZE;
513 pp = __ia32_find_pp(current->thread.ppl, pstart, &prev,
514 &rb_link, &rb_parent);
516 for (i = start_bit; i < end_bit; i++)
517 clear_bit(i, &pp->bitmap);
518 if (pp->bitmap == 0) {
519 __ia32_delete_pp(current->thread.ppl, pp, __pp_prev(pp));
525 vma = find_vma(current->mm, pstart);
526 if (!vma || vma->vm_start > pstart) {
530 /* new a partial_page */
531 pp = kmem_cache_alloc(partial_page_cachep, GFP_KERNEL);
536 for (i = 0; i < start_bit; i++)
537 set_bit(i, &(pp->bitmap));
538 for (i = end_bit; i < PAGE_SIZE / IA32_PAGE_SIZE; i++)
539 set_bit(i, &(pp->bitmap));
541 __ia32_insert_pp(current->thread.ppl, pp, prev, rb_link, rb_parent);
546 * Delete pp between PAGE_ALIGN(start) and PAGE_START(end) by calling
547 * __ia32_delete_pp_range(). Unset possible partial pages by calling
549 * The returned value see __ia32_unset_pp().
552 ia32_unset_pp(unsigned int *startp, unsigned int *endp)
554 unsigned int start = *startp, end = *endp;
557 down_write(¤t->mm->mmap_sem);
559 __ia32_delete_pp_range(PAGE_ALIGN(start), PAGE_START(end));
561 if (end < PAGE_ALIGN(start)) {
562 ret = __ia32_unset_pp(start, end);
564 *startp = PAGE_START(start);
565 *endp = PAGE_ALIGN(end);
568 /* to shortcut sys_munmap() in sys32_munmap() */
569 *startp = PAGE_START(start);
570 *endp = PAGE_START(end);
573 if (offset_in_page(start)) {
574 ret = __ia32_unset_pp(start, PAGE_ALIGN(start));
576 *startp = PAGE_START(start);
578 *startp = PAGE_ALIGN(start);
582 if (offset_in_page(end)) {
583 ret = __ia32_unset_pp(PAGE_START(end), end);
585 *endp = PAGE_ALIGN(end);
587 *endp = PAGE_START(end);
592 up_write(¤t->mm->mmap_sem);
597 * Compare the range between @start and @end with bitmap in partial page.
598 * @start and @end should be IA32 page aligned and in the same IA64 page.
601 __ia32_compare_pp(unsigned int start, unsigned int end)
603 struct partial_page *pp, *prev;
604 struct rb_node ** rb_link, *rb_parent;
605 unsigned int pstart, start_bit, end_bit, size;
606 unsigned int first_bit, next_zero_bit; /* the first range in bitmap */
608 pstart = PAGE_START(start);
610 pp = __ia32_find_pp(current->thread.ppl, pstart, &prev,
611 &rb_link, &rb_parent);
615 start_bit = (start % PAGE_SIZE) / IA32_PAGE_SIZE;
616 end_bit = (end % PAGE_SIZE) / IA32_PAGE_SIZE;
617 size = sizeof(pp->bitmap) * 8;
618 first_bit = find_first_bit(&pp->bitmap, size);
619 next_zero_bit = find_next_zero_bit(&pp->bitmap, size, first_bit);
620 if ((start_bit < first_bit) || (end_bit > next_zero_bit)) {
621 /* exceeds the first range in bitmap */
623 } else if ((start_bit == first_bit) && (end_bit == next_zero_bit)) {
624 first_bit = find_next_bit(&pp->bitmap, size, next_zero_bit);
625 if ((next_zero_bit < first_bit) && (first_bit < size))
626 return 1; /* has next range */
628 return 0; /* no next range */
634 * @start and @end should be IA32 page aligned, but don't need to be in the
635 * same IA64 page. Split @start and @end to make sure they're in the same IA64
636 * page, then call __ia32_compare_pp().
638 * Take this as example: the range is the 1st and 2nd 4K page.
639 * Return 0 if they fit bitmap exactly, i.e. bitmap = 00000011;
640 * Return 1 if the range doesn't cover whole bitmap, e.g. bitmap = 00001111;
641 * Return -ENOMEM if the range exceeds the bitmap, e.g. bitmap = 00000001 or
645 ia32_compare_pp(unsigned int *startp, unsigned int *endp)
647 unsigned int start = *startp, end = *endp;
650 down_write(¤t->mm->mmap_sem);
652 if (end < PAGE_ALIGN(start)) {
653 retval = __ia32_compare_pp(start, end);
655 *startp = PAGE_START(start);
656 *endp = PAGE_ALIGN(end);
659 if (offset_in_page(start)) {
660 retval = __ia32_compare_pp(start,
663 *startp = PAGE_START(start);
667 if (offset_in_page(end)) {
668 retval = __ia32_compare_pp(PAGE_START(end), end);
670 *endp = PAGE_ALIGN(end);
675 up_write(¤t->mm->mmap_sem);
680 __ia32_drop_pp_list(struct partial_page_list *ppl)
682 struct partial_page *pp = ppl->pp_head;
685 struct partial_page *next = pp->next;
686 kmem_cache_free(partial_page_cachep, pp);
694 ia32_drop_partial_page_list(struct task_struct *task)
696 struct partial_page_list* ppl = task->thread.ppl;
698 if (ppl && atomic_dec_and_test(&ppl->pp_count))
699 __ia32_drop_pp_list(ppl);
703 * Copy current->thread.ppl to ppl (already initialized).
706 __ia32_copy_pp_list(struct partial_page_list *ppl)
708 struct partial_page *pp, *tmp, *prev;
709 struct rb_node **rb_link, *rb_parent;
713 ppl->ppl_rb = RB_ROOT;
714 rb_link = &ppl->ppl_rb.rb_node;
718 for (pp = current->thread.ppl->pp_head; pp; pp = pp->next) {
719 tmp = kmem_cache_alloc(partial_page_cachep, GFP_KERNEL);
723 __ia32_insert_pp(ppl, tmp, prev, rb_link, rb_parent);
725 rb_link = &tmp->pp_rb.rb_right;
726 rb_parent = &tmp->pp_rb;
732 ia32_copy_partial_page_list(struct task_struct *p, unsigned long clone_flags)
736 if (clone_flags & CLONE_VM) {
737 atomic_inc(¤t->thread.ppl->pp_count);
738 p->thread.ppl = current->thread.ppl;
740 p->thread.ppl = ia32_init_pp_list();
743 down_write(¤t->mm->mmap_sem);
745 retval = __ia32_copy_pp_list(p->thread.ppl);
747 up_write(¤t->mm->mmap_sem);
754 emulate_mmap (struct file *file, unsigned long start, unsigned long len, int prot, int flags,
757 unsigned long tmp, end, pend, pstart, ret, is_congruent, fudge = 0;
762 pstart = PAGE_START(start);
763 pend = PAGE_ALIGN(end);
765 if (flags & MAP_FIXED) {
766 ia32_set_pp((unsigned int)start, (unsigned int)end, flags);
767 if (start > pstart) {
768 if (flags & MAP_SHARED)
770 "%s(%d): emulate_mmap() can't share head (addr=0x%lx)\n",
771 current->comm, current->pid, start);
772 ret = mmap_subpage(file, start, min(PAGE_ALIGN(start), end), prot, flags,
774 if (IS_ERR((void *) ret))
781 if (flags & MAP_SHARED)
783 "%s(%d): emulate_mmap() can't share tail (end=0x%lx)\n",
784 current->comm, current->pid, end);
785 ret = mmap_subpage(file, max(start, PAGE_START(end)), end, prot, flags,
786 (off + len) - offset_in_page(end));
787 if (IS_ERR((void *) ret))
795 * If a start address was specified, use it if the entire rounded out area
798 if (start && !pstart)
799 fudge = 1; /* handle case of mapping to range (0,PAGE_SIZE) */
800 tmp = arch_get_unmapped_area(file, pstart - fudge, pend - pstart, 0, flags);
803 start = pstart + offset_in_page(off); /* make start congruent with off */
805 pend = PAGE_ALIGN(end);
809 poff = off + (pstart - start); /* note: (pstart - start) may be negative */
810 is_congruent = (flags & MAP_ANONYMOUS) || (offset_in_page(poff) == 0);
812 if ((flags & MAP_SHARED) && !is_congruent)
813 printk(KERN_INFO "%s(%d): emulate_mmap() can't share contents of incongruent mmap "
814 "(addr=0x%lx,off=0x%llx)\n", current->comm, current->pid, start, off);
816 DBG("mmap_body: mapping [0x%lx-0x%lx) %s with poff 0x%llx\n", pstart, pend,
817 is_congruent ? "congruent" : "not congruent", poff);
819 down_write(¤t->mm->mmap_sem);
821 if (!(flags & MAP_ANONYMOUS) && is_congruent)
822 ret = do_mmap(file, pstart, pend - pstart, prot, flags | MAP_FIXED, poff);
824 ret = do_mmap(NULL, pstart, pend - pstart,
825 prot | ((flags & MAP_ANONYMOUS) ? 0 : PROT_WRITE),
826 flags | MAP_FIXED | MAP_ANONYMOUS, 0);
828 up_write(¤t->mm->mmap_sem);
830 if (IS_ERR((void *) ret))
834 /* read the file contents */
835 inode = file->f_dentry->d_inode;
836 if (!inode->i_fop || !file->f_op->read
837 || ((*file->f_op->read)(file, (char __user *) pstart, pend - pstart, &poff)
840 sys_munmap(pstart, pend - pstart);
843 if (!(prot & PROT_WRITE) && sys_mprotect(pstart, pend - pstart, prot) < 0)
847 if (!(flags & MAP_FIXED))
848 ia32_set_pp((unsigned int)start, (unsigned int)end, flags);
853 #endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */
855 static inline unsigned int
856 get_prot32 (unsigned int prot)
858 if (prot & PROT_WRITE)
859 /* on x86, PROT_WRITE implies PROT_READ which implies PROT_EEC */
860 prot |= PROT_READ | PROT_WRITE | PROT_EXEC;
861 else if (prot & (PROT_READ | PROT_EXEC))
862 /* on x86, there is no distinction between PROT_READ and PROT_EXEC */
863 prot |= (PROT_READ | PROT_EXEC);
869 ia32_do_mmap (struct file *file, unsigned long addr, unsigned long len, int prot, int flags,
872 DBG("ia32_do_mmap(file=%p,addr=0x%lx,len=0x%lx,prot=%x,flags=%x,offset=0x%llx)\n",
873 file, addr, len, prot, flags, offset);
875 if (file && (!file->f_op || !file->f_op->mmap))
878 len = IA32_PAGE_ALIGN(len);
882 if (len > IA32_PAGE_OFFSET || addr > IA32_PAGE_OFFSET - len)
884 if (flags & MAP_FIXED)
890 if (OFFSET4K(offset))
893 prot = get_prot32(prot);
895 #if PAGE_SHIFT > IA32_PAGE_SHIFT
896 down(&ia32_mmap_sem);
898 addr = emulate_mmap(file, addr, len, prot, flags, offset);
902 down_write(¤t->mm->mmap_sem);
904 addr = do_mmap(file, addr, len, prot, flags, offset);
906 up_write(¤t->mm->mmap_sem);
908 DBG("ia32_do_mmap: returning 0x%lx\n", addr);
913 * Linux/i386 didn't use to be able to handle more than 4 system call parameters, so these
914 * system calls used a memory block for parameter passing..
917 struct mmap_arg_struct {
927 sys32_mmap (struct mmap_arg_struct __user *arg)
929 struct mmap_arg_struct a;
930 struct file *file = NULL;
934 if (copy_from_user(&a, arg, sizeof(a)))
937 if (OFFSET4K(a.offset))
942 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
943 if (!(flags & MAP_ANONYMOUS)) {
949 addr = ia32_do_mmap(file, a.addr, a.len, a.prot, flags, a.offset);
957 sys32_mmap2 (unsigned int addr, unsigned int len, unsigned int prot, unsigned int flags,
958 unsigned int fd, unsigned int pgoff)
960 struct file *file = NULL;
961 unsigned long retval;
963 flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
964 if (!(flags & MAP_ANONYMOUS)) {
970 retval = ia32_do_mmap(file, addr, len, prot, flags,
971 (unsigned long) pgoff << IA32_PAGE_SHIFT);
979 sys32_munmap (unsigned int start, unsigned int len)
981 unsigned int end = start + len;
984 #if PAGE_SHIFT <= IA32_PAGE_SHIFT
985 ret = sys_munmap(start, end - start);
990 end = IA32_PAGE_ALIGN(end);
994 ret = ia32_unset_pp(&start, &end);
1001 down(&ia32_mmap_sem);
1003 ret = sys_munmap(start, end - start);
1010 #if PAGE_SHIFT > IA32_PAGE_SHIFT
1013 * When mprotect()ing a partial page, we set the permission to the union of the old
1014 * settings and the new settings. In other words, it's only possible to make access to a
1015 * partial page less restrictive.
1018 mprotect_subpage (unsigned long address, int new_prot)
1021 struct vm_area_struct *vma;
1023 if (new_prot == PROT_NONE)
1024 return 0; /* optimize case where nothing changes... */
1025 vma = find_vma(current->mm, address);
1026 old_prot = get_page_prot(vma, address);
1027 return sys_mprotect(address, PAGE_SIZE, new_prot | old_prot);
1030 #endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */
1033 sys32_mprotect (unsigned int start, unsigned int len, int prot)
1035 unsigned int end = start + len;
1036 #if PAGE_SHIFT > IA32_PAGE_SHIFT
1040 prot = get_prot32(prot);
1042 #if PAGE_SHIFT <= IA32_PAGE_SHIFT
1043 return sys_mprotect(start, end - start, prot);
1045 if (OFFSET4K(start))
1048 end = IA32_PAGE_ALIGN(end);
1052 retval = ia32_compare_pp(&start, &end);
1057 down(&ia32_mmap_sem);
1059 if (offset_in_page(start)) {
1060 /* start address is 4KB aligned but not page aligned. */
1061 retval = mprotect_subpage(PAGE_START(start), prot);
1065 start = PAGE_ALIGN(start);
1067 goto out; /* retval is already zero... */
1070 if (offset_in_page(end)) {
1071 /* end address is 4KB aligned but not page aligned. */
1072 retval = mprotect_subpage(PAGE_START(end), prot);
1076 end = PAGE_START(end);
1078 retval = sys_mprotect(start, end - start, prot);
1087 sys32_mremap (unsigned int addr, unsigned int old_len, unsigned int new_len,
1088 unsigned int flags, unsigned int new_addr)
1092 #if PAGE_SHIFT <= IA32_PAGE_SHIFT
1093 ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
1095 unsigned int old_end, new_end;
1100 old_len = IA32_PAGE_ALIGN(old_len);
1101 new_len = IA32_PAGE_ALIGN(new_len);
1102 old_end = addr + old_len;
1103 new_end = addr + new_len;
1108 if ((flags & MREMAP_FIXED) && (OFFSET4K(new_addr)))
1111 if (old_len >= new_len) {
1112 ret = sys32_munmap(addr + new_len, old_len - new_len);
1113 if (ret && old_len != new_len)
1116 if (!(flags & MREMAP_FIXED) || (new_addr == addr))
1121 addr = PAGE_START(addr);
1122 old_len = PAGE_ALIGN(old_end) - addr;
1123 new_len = PAGE_ALIGN(new_end) - addr;
1125 down(&ia32_mmap_sem);
1127 ret = sys_mremap(addr, old_len, new_len, flags, new_addr);
1131 if ((ret >= 0) && (old_len < new_len)) {
1132 /* mremap expanded successfully */
1133 ia32_set_pp(old_end, new_end, flags);
1140 sys32_pipe (int __user *fd)
1145 retval = do_pipe(fds);
1148 if (copy_to_user(fd, fds, sizeof(fds)))
1155 get_tv32 (struct timeval *o, struct compat_timeval __user *i)
1157 return (!access_ok(VERIFY_READ, i, sizeof(*i)) ||
1158 (__get_user(o->tv_sec, &i->tv_sec) | __get_user(o->tv_usec, &i->tv_usec)));
1162 put_tv32 (struct compat_timeval __user *o, struct timeval *i)
1164 return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) ||
1165 (__put_user(i->tv_sec, &o->tv_sec) | __put_user(i->tv_usec, &o->tv_usec)));
1168 asmlinkage unsigned long
1169 sys32_alarm (unsigned int seconds)
1171 struct itimerval it_new, it_old;
1172 unsigned int oldalarm;
1174 it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
1175 it_new.it_value.tv_sec = seconds;
1176 it_new.it_value.tv_usec = 0;
1177 do_setitimer(ITIMER_REAL, &it_new, &it_old);
1178 oldalarm = it_old.it_value.tv_sec;
1179 /* ehhh.. We can't return 0 if we have an alarm pending.. */
1180 /* And we'd better return too much than too little anyway */
1181 if (it_old.it_value.tv_usec)
1186 /* Translations due to time_t size differences. Which affects all
1187 sorts of things, like timeval and itimerval. */
1189 extern struct timezone sys_tz;
1192 sys32_gettimeofday (struct compat_timeval __user *tv, struct timezone __user *tz)
1196 do_gettimeofday(&ktv);
1197 if (put_tv32(tv, &ktv))
1201 if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
1208 sys32_settimeofday (struct compat_timeval __user *tv, struct timezone __user *tz)
1211 struct timespec kts;
1212 struct timezone ktz;
1215 if (get_tv32(&ktv, tv))
1217 kts.tv_sec = ktv.tv_sec;
1218 kts.tv_nsec = ktv.tv_usec * 1000;
1221 if (copy_from_user(&ktz, tz, sizeof(ktz)))
1225 return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
1228 struct getdents32_callback {
1229 struct compat_dirent __user *current_dir;
1230 struct compat_dirent __user *previous;
1235 struct readdir32_callback {
1236 struct old_linux32_dirent __user * dirent;
1241 filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
1242 unsigned int d_type)
1244 struct compat_dirent __user * dirent;
1245 struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
1246 int reclen = ROUND_UP(offsetof(struct compat_dirent, d_name) + namlen + 1, 4);
1248 buf->error = -EINVAL; /* only used if we fail.. */
1249 if (reclen > buf->count)
1251 buf->error = -EFAULT; /* only used if we fail.. */
1252 dirent = buf->previous;
1254 if (put_user(offset, &dirent->d_off))
1256 dirent = buf->current_dir;
1257 buf->previous = dirent;
1258 if (put_user(ino, &dirent->d_ino)
1259 || put_user(reclen, &dirent->d_reclen)
1260 || copy_to_user(dirent->d_name, name, namlen)
1261 || put_user(0, dirent->d_name + namlen))
1263 dirent = (struct compat_dirent __user *) ((char __user *) dirent + reclen);
1264 buf->current_dir = dirent;
1265 buf->count -= reclen;
1270 sys32_getdents (unsigned int fd, struct compat_dirent __user *dirent, unsigned int count)
1273 struct compat_dirent __user * lastdirent;
1274 struct getdents32_callback buf;
1282 buf.current_dir = dirent;
1283 buf.previous = NULL;
1287 error = vfs_readdir(file, filldir32, &buf);
1291 lastdirent = buf.previous;
1294 if (put_user(file->f_pos, &lastdirent->d_off))
1296 error = count - buf.count;
1306 fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino,
1307 unsigned int d_type)
1309 struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
1310 struct old_linux32_dirent __user * dirent;
1315 dirent = buf->dirent;
1316 if (put_user(ino, &dirent->d_ino)
1317 || put_user(offset, &dirent->d_offset)
1318 || put_user(namlen, &dirent->d_namlen)
1319 || copy_to_user(dirent->d_name, name, namlen)
1320 || put_user(0, dirent->d_name + namlen))
1326 sys32_readdir (unsigned int fd, void __user *dirent, unsigned int count)
1330 struct readdir32_callback buf;
1338 buf.dirent = dirent;
1340 error = vfs_readdir(file, fillonedir32, &buf);
1348 struct sel_arg_struct {
1357 sys32_old_select (struct sel_arg_struct __user *arg)
1359 struct sel_arg_struct a;
1361 if (copy_from_user(&a, arg, sizeof(a)))
1363 return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
1364 compat_ptr(a.exp), compat_ptr(a.tvp));
1370 #define SEMTIMEDOP 4
1381 sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth)
1385 version = call >> 16; /* hack for backward compatibility */
1391 return compat_sys_semtimedop(first, compat_ptr(ptr),
1392 second, compat_ptr(fifth));
1393 /* else fall through for normal semop() */
1395 /* struct sembuf is the same on 32 and 64bit :)) */
1396 return sys_semtimedop(first, compat_ptr(ptr), second,
1399 return sys_semget(first, second, third);
1401 return compat_sys_semctl(first, second, third, compat_ptr(ptr));
1404 return compat_sys_msgsnd(first, second, third, compat_ptr(ptr));
1406 return compat_sys_msgrcv(first, second, fifth, third, version, compat_ptr(ptr));
1408 return sys_msgget((key_t) first, second);
1410 return compat_sys_msgctl(first, second, compat_ptr(ptr));
1413 return compat_sys_shmat(first, second, third, version, compat_ptr(ptr));
1416 return sys_shmdt(compat_ptr(ptr));
1418 return sys_shmget(first, second, third);
1420 return compat_sys_shmctl(first, second, compat_ptr(ptr));
1429 * sys_time() can be implemented in user-level using
1430 * sys_gettimeofday(). IA64 did this but i386 Linux did not
1431 * so we have to implement this system call here.
1434 sys32_time (int __user *tloc)
1439 do_gettimeofday(&tv);
1443 if (put_user(i, tloc))
1450 compat_sys_wait4 (compat_pid_t pid, compat_uint_t * stat_addr, int options,
1451 struct compat_rusage *ru);
1454 sys32_waitpid (int pid, unsigned int *stat_addr, int options)
1456 return compat_sys_wait4(pid, stat_addr, options, NULL);
1460 ia32_peek (struct pt_regs *regs, struct task_struct *child, unsigned long addr, unsigned int *val)
1465 copied = access_process_vm(child, addr, val, sizeof(*val), 0);
1466 return (copied != sizeof(ret)) ? -EIO : 0;
1470 ia32_poke (struct pt_regs *regs, struct task_struct *child, unsigned long addr, unsigned int val)
1473 if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val))
1479 * The order in which registers are stored in the ptrace regs structure
1492 #define PT_ORIG_EAX 11
1500 getreg (struct task_struct *child, int regno)
1502 struct pt_regs *child_regs;
1504 child_regs = ia64_task_regs(child);
1505 switch (regno / sizeof(int)) {
1506 case PT_EBX: return child_regs->r11;
1507 case PT_ECX: return child_regs->r9;
1508 case PT_EDX: return child_regs->r10;
1509 case PT_ESI: return child_regs->r14;
1510 case PT_EDI: return child_regs->r15;
1511 case PT_EBP: return child_regs->r13;
1512 case PT_EAX: return child_regs->r8;
1513 case PT_ORIG_EAX: return child_regs->r1; /* see dispatch_to_ia32_handler() */
1514 case PT_EIP: return child_regs->cr_iip;
1515 case PT_UESP: return child_regs->r12;
1516 case PT_EFL: return child->thread.eflag;
1517 case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS:
1519 case PT_CS: return __USER_CS;
1521 printk(KERN_ERR "ia32.getreg(): unknown register %d\n", regno);
1528 putreg (struct task_struct *child, int regno, unsigned int value)
1530 struct pt_regs *child_regs;
1532 child_regs = ia64_task_regs(child);
1533 switch (regno / sizeof(int)) {
1534 case PT_EBX: child_regs->r11 = value; break;
1535 case PT_ECX: child_regs->r9 = value; break;
1536 case PT_EDX: child_regs->r10 = value; break;
1537 case PT_ESI: child_regs->r14 = value; break;
1538 case PT_EDI: child_regs->r15 = value; break;
1539 case PT_EBP: child_regs->r13 = value; break;
1540 case PT_EAX: child_regs->r8 = value; break;
1541 case PT_ORIG_EAX: child_regs->r1 = value; break;
1542 case PT_EIP: child_regs->cr_iip = value; break;
1543 case PT_UESP: child_regs->r12 = value; break;
1544 case PT_EFL: child->thread.eflag = value; break;
1545 case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS:
1546 if (value != __USER_DS)
1548 "ia32.putreg: attempt to set invalid segment register %d = %x\n",
1552 if (value != __USER_CS)
1554 "ia32.putreg: attempt to to set invalid segment register %d = %x\n",
1558 printk(KERN_ERR "ia32.putreg: unknown register %d\n", regno);
1564 put_fpreg (int regno, struct _fpreg_ia32 __user *reg, struct pt_regs *ptp,
1565 struct switch_stack *swp, int tos)
1567 struct _fpreg_ia32 *f;
1570 f = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15);
1571 if ((regno += tos) >= 8)
1575 ia64f2ia32f(f, &ptp->f8);
1578 ia64f2ia32f(f, &ptp->f9);
1581 ia64f2ia32f(f, &ptp->f10);
1584 ia64f2ia32f(f, &ptp->f11);
1590 ia64f2ia32f(f, &swp->f12 + (regno - 4));
1593 copy_to_user(reg, f, sizeof(*reg));
1597 get_fpreg (int regno, struct _fpreg_ia32 __user *reg, struct pt_regs *ptp,
1598 struct switch_stack *swp, int tos)
1601 if ((regno += tos) >= 8)
1605 copy_from_user(&ptp->f8, reg, sizeof(*reg));
1608 copy_from_user(&ptp->f9, reg, sizeof(*reg));
1611 copy_from_user(&ptp->f10, reg, sizeof(*reg));
1614 copy_from_user(&ptp->f11, reg, sizeof(*reg));
1620 copy_from_user(&swp->f12 + (regno - 4), reg, sizeof(*reg));
1627 save_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct __user *save)
1629 struct switch_stack *swp;
1630 struct pt_regs *ptp;
1633 if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
1636 __put_user(tsk->thread.fcr & 0xffff, &save->cwd);
1637 __put_user(tsk->thread.fsr & 0xffff, &save->swd);
1638 __put_user((tsk->thread.fsr>>16) & 0xffff, &save->twd);
1639 __put_user(tsk->thread.fir, &save->fip);
1640 __put_user((tsk->thread.fir>>32) & 0xffff, &save->fcs);
1641 __put_user(tsk->thread.fdr, &save->foo);
1642 __put_user((tsk->thread.fdr>>32) & 0xffff, &save->fos);
1645 * Stack frames start with 16-bytes of temp space
1647 swp = (struct switch_stack *)(tsk->thread.ksp + 16);
1648 ptp = ia64_task_regs(tsk);
1649 tos = (tsk->thread.fsr >> 11) & 7;
1650 for (i = 0; i < 8; i++)
1651 put_fpreg(i, &save->st_space[i], ptp, swp, tos);
1656 restore_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct __user *save)
1658 struct switch_stack *swp;
1659 struct pt_regs *ptp;
1661 unsigned int fsrlo, fsrhi, num32;
1663 if (!access_ok(VERIFY_READ, save, sizeof(*save)))
1666 __get_user(num32, (unsigned int __user *)&save->cwd);
1667 tsk->thread.fcr = (tsk->thread.fcr & (~0x1f3f)) | (num32 & 0x1f3f);
1668 __get_user(fsrlo, (unsigned int __user *)&save->swd);
1669 __get_user(fsrhi, (unsigned int __user *)&save->twd);
1670 num32 = (fsrhi << 16) | fsrlo;
1671 tsk->thread.fsr = (tsk->thread.fsr & (~0xffffffff)) | num32;
1672 __get_user(num32, (unsigned int __user *)&save->fip);
1673 tsk->thread.fir = (tsk->thread.fir & (~0xffffffff)) | num32;
1674 __get_user(num32, (unsigned int __user *)&save->foo);
1675 tsk->thread.fdr = (tsk->thread.fdr & (~0xffffffff)) | num32;
1678 * Stack frames start with 16-bytes of temp space
1680 swp = (struct switch_stack *)(tsk->thread.ksp + 16);
1681 ptp = ia64_task_regs(tsk);
1682 tos = (tsk->thread.fsr >> 11) & 7;
1683 for (i = 0; i < 8; i++)
1684 get_fpreg(i, &save->st_space[i], ptp, swp, tos);
1689 save_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct __user *save)
1691 struct switch_stack *swp;
1692 struct pt_regs *ptp;
1694 unsigned long mxcsr=0;
1695 unsigned long num128[2];
1697 if (!access_ok(VERIFY_WRITE, save, sizeof(*save)))
1700 __put_user(tsk->thread.fcr & 0xffff, &save->cwd);
1701 __put_user(tsk->thread.fsr & 0xffff, &save->swd);
1702 __put_user((tsk->thread.fsr>>16) & 0xffff, &save->twd);
1703 __put_user(tsk->thread.fir, &save->fip);
1704 __put_user((tsk->thread.fir>>32) & 0xffff, &save->fcs);
1705 __put_user(tsk->thread.fdr, &save->foo);
1706 __put_user((tsk->thread.fdr>>32) & 0xffff, &save->fos);
1709 * Stack frames start with 16-bytes of temp space
1711 swp = (struct switch_stack *)(tsk->thread.ksp + 16);
1712 ptp = ia64_task_regs(tsk);
1713 tos = (tsk->thread.fsr >> 11) & 7;
1714 for (i = 0; i < 8; i++)
1715 put_fpreg(i, (struct _fpreg_ia32 __user *)&save->st_space[4*i], ptp, swp, tos);
1717 mxcsr = ((tsk->thread.fcr>>32) & 0xff80) | ((tsk->thread.fsr>>32) & 0x3f);
1718 __put_user(mxcsr & 0xffff, &save->mxcsr);
1719 for (i = 0; i < 8; i++) {
1720 memcpy(&(num128[0]), &(swp->f16) + i*2, sizeof(unsigned long));
1721 memcpy(&(num128[1]), &(swp->f17) + i*2, sizeof(unsigned long));
1722 copy_to_user(&save->xmm_space[0] + 4*i, num128, sizeof(struct _xmmreg_ia32));
1728 restore_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct __user *save)
1730 struct switch_stack *swp;
1731 struct pt_regs *ptp;
1733 unsigned int fsrlo, fsrhi, num32;
1735 unsigned long num64;
1736 unsigned long num128[2];
1738 if (!access_ok(VERIFY_READ, save, sizeof(*save)))
1741 __get_user(num32, (unsigned int __user *)&save->cwd);
1742 tsk->thread.fcr = (tsk->thread.fcr & (~0x1f3f)) | (num32 & 0x1f3f);
1743 __get_user(fsrlo, (unsigned int __user *)&save->swd);
1744 __get_user(fsrhi, (unsigned int __user *)&save->twd);
1745 num32 = (fsrhi << 16) | fsrlo;
1746 tsk->thread.fsr = (tsk->thread.fsr & (~0xffffffff)) | num32;
1747 __get_user(num32, (unsigned int __user *)&save->fip);
1748 tsk->thread.fir = (tsk->thread.fir & (~0xffffffff)) | num32;
1749 __get_user(num32, (unsigned int __user *)&save->foo);
1750 tsk->thread.fdr = (tsk->thread.fdr & (~0xffffffff)) | num32;
1753 * Stack frames start with 16-bytes of temp space
1755 swp = (struct switch_stack *)(tsk->thread.ksp + 16);
1756 ptp = ia64_task_regs(tsk);
1757 tos = (tsk->thread.fsr >> 11) & 7;
1758 for (i = 0; i < 8; i++)
1759 get_fpreg(i, (struct _fpreg_ia32 __user *)&save->st_space[4*i], ptp, swp, tos);
1761 __get_user(mxcsr, (unsigned int __user *)&save->mxcsr);
1762 num64 = mxcsr & 0xff10;
1763 tsk->thread.fcr = (tsk->thread.fcr & (~0xff1000000000UL)) | (num64<<32);
1764 num64 = mxcsr & 0x3f;
1765 tsk->thread.fsr = (tsk->thread.fsr & (~0x3f00000000UL)) | (num64<<32);
1767 for (i = 0; i < 8; i++) {
1768 copy_from_user(num128, &save->xmm_space[0] + 4*i, sizeof(struct _xmmreg_ia32));
1769 memcpy(&(swp->f16) + i*2, &(num128[0]), sizeof(unsigned long));
1770 memcpy(&(swp->f17) + i*2, &(num128[1]), sizeof(unsigned long));
1776 * Note that the IA32 version of `ptrace' calls the IA64 routine for
1777 * many of the requests. This will only work for requests that do
1778 * not need access to the calling processes `pt_regs' which is located
1779 * at the address of `stack'. Once we call the IA64 `sys_ptrace' then
1780 * the address of `stack' will not be the address of the `pt_regs'.
1783 sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data,
1784 long arg4, long arg5, long arg6, long arg7, long stack)
1786 struct pt_regs *regs = (struct pt_regs *) &stack;
1787 struct task_struct *child;
1788 unsigned int value, tmp;
1792 if (request == PTRACE_TRACEME) {
1793 ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack);
1798 read_lock(&tasklist_lock);
1799 child = find_task_by_pid(pid);
1801 get_task_struct(child);
1802 read_unlock(&tasklist_lock);
1806 if (pid == 1) /* no messing around with init! */
1809 if (request == PTRACE_ATTACH) {
1810 ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack);
1814 ret = ptrace_check_attach(child, request == PTRACE_KILL);
1819 case PTRACE_PEEKTEXT:
1820 case PTRACE_PEEKDATA: /* read word at location addr */
1821 ret = ia32_peek(regs, child, addr, &value);
1823 ret = put_user(value, (unsigned int __user *) compat_ptr(data));
1828 case PTRACE_POKETEXT:
1829 case PTRACE_POKEDATA: /* write the word at location addr */
1830 ret = ia32_poke(regs, child, addr, data);
1833 case PTRACE_PEEKUSR: /* read word at addr in USER area */
1835 if ((addr & 3) || addr > 17*sizeof(int))
1838 tmp = getreg(child, addr);
1839 if (!put_user(tmp, (unsigned int __user *) compat_ptr(data)))
1843 case PTRACE_POKEUSR: /* write word at addr in USER area */
1845 if ((addr & 3) || addr > 17*sizeof(int))
1848 putreg(child, addr, data);
1852 case IA32_PTRACE_GETREGS:
1853 if (!access_ok(VERIFY_WRITE, compat_ptr(data), 17*sizeof(int))) {
1857 for (i = 0; i < (int) (17*sizeof(int)); i += sizeof(int) ) {
1858 put_user(getreg(child, i), (unsigned int __user *) compat_ptr(data));
1859 data += sizeof(int);
1864 case IA32_PTRACE_SETREGS:
1865 if (!access_ok(VERIFY_READ, compat_ptr(data), 17*sizeof(int))) {
1869 for (i = 0; i < (int) (17*sizeof(int)); i += sizeof(int) ) {
1870 get_user(tmp, (unsigned int __user *) compat_ptr(data));
1871 putreg(child, i, tmp);
1872 data += sizeof(int);
1877 case IA32_PTRACE_GETFPREGS:
1878 ret = save_ia32_fpstate(child, (struct ia32_user_i387_struct __user *)
1882 case IA32_PTRACE_GETFPXREGS:
1883 ret = save_ia32_fpxstate(child, (struct ia32_user_fxsr_struct __user *)
1887 case IA32_PTRACE_SETFPREGS:
1888 ret = restore_ia32_fpstate(child, (struct ia32_user_i387_struct __user *)
1892 case IA32_PTRACE_SETFPXREGS:
1893 ret = restore_ia32_fpxstate(child, (struct ia32_user_fxsr_struct __user *)
1897 case PTRACE_SYSCALL: /* continue, stop after next syscall */
1898 case PTRACE_CONT: /* restart after signal. */
1900 case PTRACE_SINGLESTEP: /* execute chile for one instruction */
1901 case PTRACE_DETACH: /* detach a process */
1902 ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack);
1906 ret = ptrace_request(child, request, addr, data);
1911 put_task_struct(child);
1919 unsigned int ss_flags;
1920 unsigned int ss_size;
1924 sys32_sigaltstack (ia32_stack_t __user *uss32, ia32_stack_t __user *uoss32,
1925 long arg2, long arg3, long arg4, long arg5, long arg6, long arg7, long stack)
1927 struct pt_regs *pt = (struct pt_regs *) &stack;
1931 mm_segment_t old_fs = get_fs();
1934 if (copy_from_user(&buf32, uss32, sizeof(ia32_stack_t)))
1936 uss.ss_sp = (void __user *) (long) buf32.ss_sp;
1937 uss.ss_flags = buf32.ss_flags;
1938 /* MINSIGSTKSZ is different for ia32 vs ia64. We lie here to pass the
1939 check and set it to the user requested value later */
1940 if ((buf32.ss_flags != SS_DISABLE) && (buf32.ss_size < MINSIGSTKSZ_IA32)) {
1944 uss.ss_size = MINSIGSTKSZ;
1947 ret = do_sigaltstack(uss32 ? (stack_t __user *) &uss : NULL,
1948 (stack_t __user *) &uoss, pt->r12);
1949 current->sas_ss_size = buf32.ss_size;
1955 buf32.ss_sp = (long __user) uoss.ss_sp;
1956 buf32.ss_flags = uoss.ss_flags;
1957 buf32.ss_size = uoss.ss_size;
1958 if (copy_to_user(uoss32, &buf32, sizeof(ia32_stack_t)))
1967 current->state = TASK_INTERRUPTIBLE;
1969 return -ERESTARTNOHAND;
1973 sys32_msync (unsigned int start, unsigned int len, int flags)
1977 if (OFFSET4K(start))
1979 addr = PAGE_START(start);
1980 return sys_msync(addr, len + (start - addr), flags);
1986 unsigned int oldval;
1987 unsigned int oldlenp;
1988 unsigned int newval;
1989 unsigned int newlen;
1990 unsigned int __unused[4];
1994 sys32_sysctl (struct sysctl32 __user *args)
1996 #ifdef CONFIG_SYSCTL
1997 struct sysctl32 a32;
1998 mm_segment_t old_fs = get_fs ();
1999 void __user *oldvalp, *newvalp;
2004 if (copy_from_user(&a32, args, sizeof(a32)))
2008 * We need to pre-validate these because we have to disable address checking
2009 * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
2010 * user specifying bad addresses here. Well, since we're dealing with 32 bit
2011 * addresses, we KNOW that access_ok() will always succeed, so this is an
2012 * expensive NOP, but so what...
2014 namep = (int __user *) compat_ptr(a32.name);
2015 oldvalp = compat_ptr(a32.oldval);
2016 newvalp = compat_ptr(a32.newval);
2018 if ((oldvalp && get_user(oldlen, (int __user *) compat_ptr(a32.oldlenp)))
2019 || !access_ok(VERIFY_WRITE, namep, 0)
2020 || !access_ok(VERIFY_WRITE, oldvalp, 0)
2021 || !access_ok(VERIFY_WRITE, newvalp, 0))
2026 ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *) &oldlen,
2027 newvalp, (size_t) a32.newlen);
2031 if (oldvalp && put_user (oldlen, (int __user *) compat_ptr(a32.oldlenp)))
2041 sys32_newuname (struct new_utsname __user *name)
2043 int ret = sys_newuname(name);
2046 if (copy_to_user(name->machine, "i686\0\0\0", 8))
2052 sys32_getresuid16 (u16 __user *ruid, u16 __user *euid, u16 __user *suid)
2056 mm_segment_t old_fs = get_fs();
2059 ret = sys_getresuid((uid_t __user *) &a, (uid_t __user *) &b, (uid_t __user *) &c);
2062 if (put_user(a, ruid) || put_user(b, euid) || put_user(c, suid))
2068 sys32_getresgid16 (u16 __user *rgid, u16 __user *egid, u16 __user *sgid)
2072 mm_segment_t old_fs = get_fs();
2075 ret = sys_getresgid((gid_t __user *) &a, (gid_t __user *) &b, (gid_t __user *) &c);
2081 return put_user(a, rgid) | put_user(b, egid) | put_user(c, sgid);
2085 sys32_lseek (unsigned int fd, int offset, unsigned int whence)
2087 /* Sign-extension of "offset" is important here... */
2088 return sys_lseek(fd, offset, whence);
2092 groups16_to_user(short __user *grouplist, struct group_info *group_info)
2097 for (i = 0; i < group_info->ngroups; i++) {
2098 group = (short)GROUP_AT(group_info, i);
2099 if (put_user(group, grouplist+i))
2107 groups16_from_user(struct group_info *group_info, short __user *grouplist)
2112 for (i = 0; i < group_info->ngroups; i++) {
2113 if (get_user(group, grouplist+i))
2115 GROUP_AT(group_info, i) = (gid_t)group;
2122 sys32_getgroups16 (int gidsetsize, short __user *grouplist)
2129 get_group_info(current->group_info);
2130 i = current->group_info->ngroups;
2132 if (i > gidsetsize) {
2136 if (groups16_to_user(grouplist, current->group_info)) {
2142 put_group_info(current->group_info);
2147 sys32_setgroups16 (int gidsetsize, short __user *grouplist)
2149 struct group_info *group_info;
2152 if (!capable(CAP_SETGID))
2154 if ((unsigned)gidsetsize > NGROUPS_MAX)
2157 group_info = groups_alloc(gidsetsize);
2160 retval = groups16_from_user(group_info, grouplist);
2162 put_group_info(group_info);
2166 retval = set_current_groups(group_info);
2167 put_group_info(group_info);
2173 sys32_truncate64 (unsigned int path, unsigned int len_lo, unsigned int len_hi)
2175 return sys_truncate(compat_ptr(path), ((unsigned long) len_hi << 32) | len_lo);
2179 sys32_ftruncate64 (int fd, unsigned int len_lo, unsigned int len_hi)
2181 return sys_ftruncate(fd, ((unsigned long) len_hi << 32) | len_lo);
2185 putstat64 (struct stat64 __user *ubuf, struct kstat *kbuf)
2190 if (clear_user(ubuf, sizeof(*ubuf)))
2193 hdev = huge_encode_dev(kbuf->dev);
2194 err = __put_user(hdev, (u32 __user*)&ubuf->st_dev);
2195 err |= __put_user(hdev >> 32, ((u32 __user*)&ubuf->st_dev) + 1);
2196 err |= __put_user(kbuf->ino, &ubuf->__st_ino);
2197 err |= __put_user(kbuf->ino, &ubuf->st_ino_lo);
2198 err |= __put_user(kbuf->ino >> 32, &ubuf->st_ino_hi);
2199 err |= __put_user(kbuf->mode, &ubuf->st_mode);
2200 err |= __put_user(kbuf->nlink, &ubuf->st_nlink);
2201 err |= __put_user(kbuf->uid, &ubuf->st_uid);
2202 err |= __put_user(kbuf->gid, &ubuf->st_gid);
2203 hdev = huge_encode_dev(kbuf->rdev);
2204 err = __put_user(hdev, (u32 __user*)&ubuf->st_rdev);
2205 err |= __put_user(hdev >> 32, ((u32 __user*)&ubuf->st_rdev) + 1);
2206 err |= __put_user(kbuf->size, &ubuf->st_size_lo);
2207 err |= __put_user((kbuf->size >> 32), &ubuf->st_size_hi);
2208 err |= __put_user(kbuf->atime.tv_sec, &ubuf->st_atime);
2209 err |= __put_user(kbuf->atime.tv_nsec, &ubuf->st_atime_nsec);
2210 err |= __put_user(kbuf->mtime.tv_sec, &ubuf->st_mtime);
2211 err |= __put_user(kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec);
2212 err |= __put_user(kbuf->ctime.tv_sec, &ubuf->st_ctime);
2213 err |= __put_user(kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec);
2214 err |= __put_user(kbuf->blksize, &ubuf->st_blksize);
2215 err |= __put_user(kbuf->blocks, &ubuf->st_blocks);
2220 sys32_stat64 (char __user *filename, struct stat64 __user *statbuf)
2223 long ret = vfs_stat(filename, &s);
2225 ret = putstat64(statbuf, &s);
2230 sys32_lstat64 (char __user *filename, struct stat64 __user *statbuf)
2233 long ret = vfs_lstat(filename, &s);
2235 ret = putstat64(statbuf, &s);
2240 sys32_fstat64 (unsigned int fd, struct stat64 __user *statbuf)
2243 long ret = vfs_fstat(fd, &s);
2245 ret = putstat64(statbuf, &s);
2267 sys32_sysinfo (struct sysinfo32 __user *info)
2272 mm_segment_t old_fs = get_fs();
2275 ret = sys_sysinfo((struct sysinfo __user *) &s);
2277 /* Check to see if any memory value is too large for 32-bit and
2278 * scale down if needed.
2280 if ((s.totalram >> 32) || (s.totalswap >> 32)) {
2281 while (s.mem_unit < PAGE_SIZE) {
2285 s.totalram >>= bitcount;
2286 s.freeram >>= bitcount;
2287 s.sharedram >>= bitcount;
2288 s.bufferram >>= bitcount;
2289 s.totalswap >>= bitcount;
2290 s.freeswap >>= bitcount;
2291 s.totalhigh >>= bitcount;
2292 s.freehigh >>= bitcount;
2295 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
2298 err = __put_user(s.uptime, &info->uptime);
2299 err |= __put_user(s.loads[0], &info->loads[0]);
2300 err |= __put_user(s.loads[1], &info->loads[1]);
2301 err |= __put_user(s.loads[2], &info->loads[2]);
2302 err |= __put_user(s.totalram, &info->totalram);
2303 err |= __put_user(s.freeram, &info->freeram);
2304 err |= __put_user(s.sharedram, &info->sharedram);
2305 err |= __put_user(s.bufferram, &info->bufferram);
2306 err |= __put_user(s.totalswap, &info->totalswap);
2307 err |= __put_user(s.freeswap, &info->freeswap);
2308 err |= __put_user(s.procs, &info->procs);
2309 err |= __put_user (s.totalhigh, &info->totalhigh);
2310 err |= __put_user (s.freehigh, &info->freehigh);
2311 err |= __put_user (s.mem_unit, &info->mem_unit);
2318 sys32_sched_rr_get_interval (pid_t pid, struct compat_timespec __user *interval)
2320 mm_segment_t old_fs = get_fs();
2325 ret = sys_sched_rr_get_interval(pid, (struct timespec __user *) &t);
2327 if (put_compat_timespec(&t, interval))
2333 sys32_pread (unsigned int fd, void __user *buf, unsigned int count, u32 pos_lo, u32 pos_hi)
2335 return sys_pread64(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo);
2339 sys32_pwrite (unsigned int fd, void __user *buf, unsigned int count, u32 pos_lo, u32 pos_hi)
2341 return sys_pwrite64(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo);
2345 sys32_sendfile (int out_fd, int in_fd, int __user *offset, unsigned int count)
2347 mm_segment_t old_fs = get_fs();
2351 if (offset && get_user(of, offset))
2355 ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *) &of : NULL, count);
2358 if (!ret && offset && put_user(of, offset))
2365 sys32_personality (unsigned int personality)
2369 if (current->personality == PER_LINUX32 && personality == PER_LINUX)
2370 personality = PER_LINUX32;
2371 ret = sys_personality(personality);
2372 if (ret == PER_LINUX32)
2377 asmlinkage unsigned long
2378 sys32_brk (unsigned int brk)
2380 unsigned long ret, obrk;
2381 struct mm_struct *mm = current->mm;
2386 clear_user(compat_ptr(ret), PAGE_ALIGN(ret) - ret);
2391 * Exactly like fs/open.c:sys_open(), except that it doesn't set the O_LARGEFILE flag.
2394 sys32_open (const char __user * filename, int flags, int mode)
2399 tmp = getname(filename);
2402 fd = get_unused_fd();
2404 struct file *f = filp_open(tmp, flags, mode);
2421 /* Structure for ia32 emulation on ia64 */
2422 struct epoll_event32
2429 sys32_epoll_ctl(int epfd, int op, int fd, struct epoll_event32 __user *event)
2431 mm_segment_t old_fs = get_fs();
2432 struct epoll_event event64;
2433 int error = -EFAULT;
2436 if ((error = verify_area(VERIFY_READ, event,
2437 sizeof(struct epoll_event32))))
2440 __get_user(event64.events, &event->events);
2441 __get_user(data_halfword, &event->data[0]);
2442 event64.data = data_halfword;
2443 __get_user(data_halfword, &event->data[1]);
2444 event64.data |= (u64)data_halfword << 32;
2447 error = sys_epoll_ctl(epfd, op, fd, (struct epoll_event __user *) &event64);
2454 sys32_epoll_wait(int epfd, struct epoll_event32 __user * events, int maxevents,
2457 struct epoll_event *events64 = NULL;
2458 mm_segment_t old_fs = get_fs();
2459 int error, numevents, size;
2461 int do_free_pages = 0;
2463 if (maxevents <= 0) {
2467 /* Verify that the area passed by the user is writeable */
2468 if ((error = verify_area(VERIFY_WRITE, events,
2469 maxevents * sizeof(struct epoll_event32))))
2473 * Allocate space for the intermediate copy. If the space needed
2474 * is large enough to cause kmalloc to fail, then try again with
2477 size = maxevents * sizeof(struct epoll_event);
2478 events64 = kmalloc(size, GFP_KERNEL);
2479 if (events64 == NULL) {
2480 events64 = (struct epoll_event *)
2481 __get_free_pages(GFP_KERNEL, get_order(size));
2482 if (events64 == NULL)
2487 /* Do the system call */
2488 set_fs(KERNEL_DS); /* copy_to/from_user should work on kernel mem*/
2489 numevents = sys_epoll_wait(epfd, (struct epoll_event __user *) events64,
2490 maxevents, timeout);
2493 /* Don't modify userspace memory if we're returning an error */
2494 if (numevents > 0) {
2495 /* Translate the 64-bit structures back into the 32-bit
2497 for (evt_idx = 0; evt_idx < numevents; evt_idx++) {
2498 __put_user(events64[evt_idx].events,
2499 &events[evt_idx].events);
2500 __put_user((u32)events64[evt_idx].data,
2501 &events[evt_idx].data[0]);
2502 __put_user((u32)(events64[evt_idx].data >> 32),
2503 &events[evt_idx].data[1]);
2508 free_pages((unsigned long) events64, get_order(size));
2515 * Get a yet unused TLS descriptor index.
2520 struct thread_struct *t = ¤t->thread;
2523 for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++)
2524 if (desc_empty(t->tls_array + idx))
2525 return idx + GDT_ENTRY_TLS_MIN;
2530 * Set a given TLS descriptor:
2533 sys32_set_thread_area (struct ia32_user_desc __user *u_info)
2535 struct thread_struct *t = ¤t->thread;
2536 struct ia32_user_desc info;
2537 struct desc_struct *desc;
2540 if (copy_from_user(&info, u_info, sizeof(info)))
2542 idx = info.entry_number;
2545 * index -1 means the kernel should try to find and allocate an empty descriptor:
2548 idx = get_free_idx();
2551 if (put_user(idx, &u_info->entry_number))
2555 if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
2558 desc = t->tls_array + idx - GDT_ENTRY_TLS_MIN;
2560 cpu = smp_processor_id();
2562 if (LDT_empty(&info)) {
2566 desc->a = LDT_entry_a(&info);
2567 desc->b = LDT_entry_b(&info);
2574 * Get the current Thread-Local Storage area:
2577 #define GET_BASE(desc) ( \
2578 (((desc)->a >> 16) & 0x0000ffff) | \
2579 (((desc)->b << 16) & 0x00ff0000) | \
2580 ( (desc)->b & 0xff000000) )
2582 #define GET_LIMIT(desc) ( \
2583 ((desc)->a & 0x0ffff) | \
2584 ((desc)->b & 0xf0000) )
2586 #define GET_32BIT(desc) (((desc)->b >> 22) & 1)
2587 #define GET_CONTENTS(desc) (((desc)->b >> 10) & 3)
2588 #define GET_WRITABLE(desc) (((desc)->b >> 9) & 1)
2589 #define GET_LIMIT_PAGES(desc) (((desc)->b >> 23) & 1)
2590 #define GET_PRESENT(desc) (((desc)->b >> 15) & 1)
2591 #define GET_USEABLE(desc) (((desc)->b >> 20) & 1)
2594 sys32_get_thread_area (struct ia32_user_desc __user *u_info)
2596 struct ia32_user_desc info;
2597 struct desc_struct *desc;
2600 if (get_user(idx, &u_info->entry_number))
2602 if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
2605 desc = current->thread.tls_array + idx - GDT_ENTRY_TLS_MIN;
2607 info.entry_number = idx;
2608 info.base_addr = GET_BASE(desc);
2609 info.limit = GET_LIMIT(desc);
2610 info.seg_32bit = GET_32BIT(desc);
2611 info.contents = GET_CONTENTS(desc);
2612 info.read_exec_only = !GET_WRITABLE(desc);
2613 info.limit_in_pages = GET_LIMIT_PAGES(desc);
2614 info.seg_not_present = !GET_PRESENT(desc);
2615 info.useable = GET_USEABLE(desc);
2617 if (copy_to_user(u_info, &info, sizeof(info)))
2623 sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *timer_id)
2631 return sys_timer_create(clock, NULL, timer_id);
2633 memset(&se, 0, sizeof(struct sigevent));
2634 if (get_user(se.sigev_value.sival_int, &se32->sigev_value.sival_int) ||
2635 __get_user(se.sigev_signo, &se32->sigev_signo) ||
2636 __get_user(se.sigev_notify, &se32->sigev_notify) ||
2637 __copy_from_user(&se._sigev_un._pad, &se32->_sigev_un._pad,
2638 sizeof(se._sigev_un._pad)))
2641 if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t)))
2646 err = sys_timer_create(clock, (struct sigevent __user *) &se, (timer_t __user *) &t);
2650 err = __put_user (t, timer_id);
2655 long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high,
2656 __u32 len_low, __u32 len_high, int advice)
2658 return sys_fadvise64_64(fd,
2659 (((u64)offset_high)<<32) | offset_low,
2660 (((u64)len_high)<<32) | len_low,
2664 asmlinkage long sys32_waitid(int which, compat_pid_t pid,
2665 siginfo_t32 __user *uinfo, int options,
2666 struct compat_rusage __user *uru)
2671 mm_segment_t old_fs = get_fs();
2675 ret = sys_waitid(which, pid, (siginfo_t __user *) &info, options,
2679 if (ret < 0 || info.si_signo == 0)
2682 if (uru && (ret = put_compat_rusage(&ru, uru)))
2685 BUG_ON(info.si_code & __SI_MASK);
2686 info.si_code |= __SI_CHLD;
2687 return copy_siginfo_to_user32(uinfo, &info);
2690 #ifdef NOTYET /* UNTESTED FOR IA64 FROM HERE DOWN */
2692 asmlinkage long sys32_setreuid(compat_uid_t ruid, compat_uid_t euid)
2696 sruid = (ruid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)ruid);
2697 seuid = (euid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)euid);
2698 return sys_setreuid(sruid, seuid);
2702 sys32_setresuid(compat_uid_t ruid, compat_uid_t euid,
2705 uid_t sruid, seuid, ssuid;
2707 sruid = (ruid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)ruid);
2708 seuid = (euid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)euid);
2709 ssuid = (suid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)suid);
2710 return sys_setresuid(sruid, seuid, ssuid);
2714 sys32_setregid(compat_gid_t rgid, compat_gid_t egid)
2718 srgid = (rgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)rgid);
2719 segid = (egid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)egid);
2720 return sys_setregid(srgid, segid);
2724 sys32_setresgid(compat_gid_t rgid, compat_gid_t egid,
2727 gid_t srgid, segid, ssgid;
2729 srgid = (rgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)rgid);
2730 segid = (egid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)egid);
2731 ssgid = (sgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)sgid);
2732 return sys_setresgid(srgid, segid, ssgid);
2735 /* Handle adjtimex compatibility. */
2739 s32 offset, freq, maxerror, esterror;
2740 s32 status, constant, precision, tolerance;
2741 struct compat_timeval time;
2743 s32 ppsfreq, jitter, shift, stabil;
2744 s32 jitcnt, calcnt, errcnt, stbcnt;
2745 s32 :32; s32 :32; s32 :32; s32 :32;
2746 s32 :32; s32 :32; s32 :32; s32 :32;
2747 s32 :32; s32 :32; s32 :32; s32 :32;
2750 extern int do_adjtimex(struct timex *);
2753 sys32_adjtimex(struct timex32 *utp)
2758 memset(&txc, 0, sizeof(struct timex));
2760 if(get_user(txc.modes, &utp->modes) ||
2761 __get_user(txc.offset, &utp->offset) ||
2762 __get_user(txc.freq, &utp->freq) ||
2763 __get_user(txc.maxerror, &utp->maxerror) ||
2764 __get_user(txc.esterror, &utp->esterror) ||
2765 __get_user(txc.status, &utp->status) ||
2766 __get_user(txc.constant, &utp->constant) ||
2767 __get_user(txc.precision, &utp->precision) ||
2768 __get_user(txc.tolerance, &utp->tolerance) ||
2769 __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
2770 __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
2771 __get_user(txc.tick, &utp->tick) ||
2772 __get_user(txc.ppsfreq, &utp->ppsfreq) ||
2773 __get_user(txc.jitter, &utp->jitter) ||
2774 __get_user(txc.shift, &utp->shift) ||
2775 __get_user(txc.stabil, &utp->stabil) ||
2776 __get_user(txc.jitcnt, &utp->jitcnt) ||
2777 __get_user(txc.calcnt, &utp->calcnt) ||
2778 __get_user(txc.errcnt, &utp->errcnt) ||
2779 __get_user(txc.stbcnt, &utp->stbcnt))
2782 ret = do_adjtimex(&txc);
2784 if(put_user(txc.modes, &utp->modes) ||
2785 __put_user(txc.offset, &utp->offset) ||
2786 __put_user(txc.freq, &utp->freq) ||
2787 __put_user(txc.maxerror, &utp->maxerror) ||
2788 __put_user(txc.esterror, &utp->esterror) ||
2789 __put_user(txc.status, &utp->status) ||
2790 __put_user(txc.constant, &utp->constant) ||
2791 __put_user(txc.precision, &utp->precision) ||
2792 __put_user(txc.tolerance, &utp->tolerance) ||
2793 __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
2794 __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
2795 __put_user(txc.tick, &utp->tick) ||
2796 __put_user(txc.ppsfreq, &utp->ppsfreq) ||
2797 __put_user(txc.jitter, &utp->jitter) ||
2798 __put_user(txc.shift, &utp->shift) ||
2799 __put_user(txc.stabil, &utp->stabil) ||
2800 __put_user(txc.jitcnt, &utp->jitcnt) ||
2801 __put_user(txc.calcnt, &utp->calcnt) ||
2802 __put_user(txc.errcnt, &utp->errcnt) ||
2803 __put_user(txc.stbcnt, &utp->stbcnt))