/* * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Derived from sys_sparc32.c. * * Copyright (C) 2000 VA Linux Co * Copyright (C) 2000 Don Dugger * Copyright (C) 1999 Arun Sharma * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 2000-2003 Hewlett-Packard Co * David Mosberger-Tang * * These routines maintain argument size conversion between 32bit and 64bit * environment. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ia32priv.h" #include #include #define DEBUG 0 #if DEBUG # define DBG(fmt...) printk(KERN_DEBUG fmt) #else # define DBG(fmt...) #endif #define A(__x) ((unsigned long)(__x)) #define AA(__x) ((unsigned long)(__x)) #define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1))) #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de))) #define OFFSET4K(a) ((a) & 0xfff) #define PAGE_START(addr) ((addr) & PAGE_MASK) #define MINSIGSTKSZ_IA32 2048 #define high2lowuid(uid) ((uid) > 65535 ? 65534 : (uid)) #define high2lowgid(gid) ((gid) > 65535 ? 65534 : (gid)) extern unsigned long arch_get_unmapped_area (struct file *, unsigned long, unsigned long, unsigned long, unsigned long); /* * Anything that modifies or inspects ia32 user virtual memory must hold this semaphore * while doing so. */ /* XXX make per-mm: */ static DECLARE_MUTEX(ia32_mmap_sem); static int nargs (unsigned int arg, char **ap) { unsigned int addr; int n, err; if (!arg) return 0; n = 0; do { err = get_user(addr, (unsigned int *)A(arg)); if (err) return err; if (ap) *ap++ = (char *) A(addr); arg += sizeof(unsigned int); n++; } while (addr); return n - 1; } asmlinkage long sys32_execve (char *filename, unsigned int argv, unsigned int envp, struct pt_regs *regs) { unsigned long old_map_base, old_task_size, tssd; char **av, **ae; int na, ne, len; long r; na = nargs(argv, NULL); if (na < 0) return na; ne = nargs(envp, NULL); if (ne < 0) return ne; len = (na + ne + 2) * sizeof(*av); av = kmalloc(len, GFP_KERNEL); if (!av) return -ENOMEM; ae = av + na + 1; av[na] = NULL; ae[ne] = NULL; r = nargs(argv, av); if (r < 0) goto out; r = nargs(envp, ae); if (r < 0) goto out; old_map_base = current->thread.map_base; old_task_size = current->thread.task_size; tssd = ia64_get_kr(IA64_KR_TSSD); /* we may be exec'ing a 64-bit process: reset map base, task-size, and io-base: */ current->thread.map_base = DEFAULT_MAP_BASE; current->thread.task_size = DEFAULT_TASK_SIZE; ia64_set_kr(IA64_KR_IO_BASE, current->thread.old_iob); ia64_set_kr(IA64_KR_TSSD, current->thread.old_k1); set_fs(KERNEL_DS); r = sys_execve(filename, av, ae, regs); if (r < 0) { /* oops, execve failed, switch back to old values... */ ia64_set_kr(IA64_KR_IO_BASE, IA32_IOBASE); ia64_set_kr(IA64_KR_TSSD, tssd); current->thread.map_base = old_map_base; current->thread.task_size = old_task_size; set_fs(USER_DS); /* establish new task-size as the address-limit */ } out: kfree(av); return r; } int cp_compat_stat(struct kstat *stat, struct compat_stat *ubuf) { int err; if ((u64) stat->size > MAX_NON_LFS || !old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev)) return -EOVERFLOW; if (clear_user(ubuf, sizeof(*ubuf))) return -EFAULT; err = __put_user(old_encode_dev(stat->dev), &ubuf->st_dev); err |= __put_user(stat->ino, &ubuf->st_ino); err |= __put_user(stat->mode, &ubuf->st_mode); err |= __put_user(stat->nlink, &ubuf->st_nlink); err |= __put_user(high2lowuid(stat->uid), &ubuf->st_uid); err |= __put_user(high2lowgid(stat->gid), &ubuf->st_gid); err |= __put_user(old_encode_dev(stat->rdev), &ubuf->st_rdev); err |= __put_user(stat->size, &ubuf->st_size); err |= __put_user(stat->atime.tv_sec, &ubuf->st_atime); err |= __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec); err |= __put_user(stat->mtime.tv_sec, &ubuf->st_mtime); err |= __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec); err |= __put_user(stat->ctime.tv_sec, &ubuf->st_ctime); err |= __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec); err |= __put_user(stat->blksize, &ubuf->st_blksize); err |= __put_user(stat->blocks, &ubuf->st_blocks); return err; } #if PAGE_SHIFT > IA32_PAGE_SHIFT static int get_page_prot (struct vm_area_struct *vma, unsigned long addr) { int prot = 0; if (!vma || vma->vm_start > addr) return 0; if (vma->vm_flags & VM_READ) prot |= PROT_READ; if (vma->vm_flags & VM_WRITE) prot |= PROT_WRITE; if (vma->vm_flags & VM_EXEC) prot |= PROT_EXEC; return prot; } /* * Map a subpage by creating an anonymous page that contains the union of the old page and * the subpage. */ static unsigned long mmap_subpage (struct file *file, unsigned long start, unsigned long end, int prot, int flags, loff_t off) { void *page = NULL; struct inode *inode; unsigned long ret = 0; struct vm_area_struct *vma = find_vma(current->mm, start); int old_prot = get_page_prot(vma, start); DBG("mmap_subpage(file=%p,start=0x%lx,end=0x%lx,prot=%x,flags=%x,off=0x%llx)\n", file, start, end, prot, flags, off); /* Optimize the case where the old mmap and the new mmap are both anonymous */ if ((old_prot & PROT_WRITE) && (flags & MAP_ANONYMOUS) && !vma->vm_file) { if (clear_user((void *) start, end - start)) { ret = -EFAULT; goto out; } goto skip_mmap; } page = (void *) get_zeroed_page(GFP_KERNEL); if (!page) return -ENOMEM; if (old_prot) copy_from_user(page, (void *) PAGE_START(start), PAGE_SIZE); down_write(¤t->mm->mmap_sem); { ret = do_mmap(0, PAGE_START(start), PAGE_SIZE, prot | PROT_WRITE, flags | MAP_FIXED | MAP_ANONYMOUS, 0); } up_write(¤t->mm->mmap_sem); if (IS_ERR((void *) ret)) goto out; if (old_prot) { /* copy back the old page contents. */ if (offset_in_page(start)) copy_to_user((void *) PAGE_START(start), page, offset_in_page(start)); if (offset_in_page(end)) copy_to_user((void *) end, page + offset_in_page(end), PAGE_SIZE - offset_in_page(end)); } if (!(flags & MAP_ANONYMOUS)) { /* read the file contents */ inode = file->f_dentry->d_inode; if (!inode->i_fop || !file->f_op->read || ((*file->f_op->read)(file, (char *) start, end - start, &off) < 0)) { ret = -EINVAL; goto out; } } skip_mmap: if (!(prot & PROT_WRITE)) ret = sys_mprotect(PAGE_START(start), PAGE_SIZE, prot | old_prot); out: if (page) free_page((unsigned long) page); return ret; } static unsigned long emulate_mmap (struct file *file, unsigned long start, unsigned long len, int prot, int flags, loff_t off) { unsigned long tmp, end, pend, pstart, ret, is_congruent, fudge = 0; struct inode *inode; loff_t poff; end = start + len; pstart = PAGE_START(start); pend = PAGE_ALIGN(end); if (flags & MAP_FIXED) { if (start > pstart) { if (flags & MAP_SHARED) printk(KERN_INFO "%s(%d): emulate_mmap() can't share head (addr=0x%lx)\n", current->comm, current->pid, start); ret = mmap_subpage(file, start, min(PAGE_ALIGN(start), end), prot, flags, off); if (IS_ERR((void *) ret)) return ret; pstart += PAGE_SIZE; if (pstart >= pend) return start; /* done */ } if (end < pend) { if (flags & MAP_SHARED) printk(KERN_INFO "%s(%d): emulate_mmap() can't share tail (end=0x%lx)\n", current->comm, current->pid, end); ret = mmap_subpage(file, max(start, PAGE_START(end)), end, prot, flags, (off + len) - offset_in_page(end)); if (IS_ERR((void *) ret)) return ret; pend -= PAGE_SIZE; if (pstart >= pend) return start; /* done */ } } else { /* * If a start address was specified, use it if the entire rounded out area * is available. */ if (start && !pstart) fudge = 1; /* handle case of mapping to range (0,PAGE_SIZE) */ tmp = arch_get_unmapped_area(file, pstart - fudge, pend - pstart, 0, flags); if (tmp != pstart) { pstart = tmp; start = pstart + offset_in_page(off); /* make start congruent with off */ end = start + len; pend = PAGE_ALIGN(end); } } poff = off + (pstart - start); /* note: (pstart - start) may be negative */ is_congruent = (flags & MAP_ANONYMOUS) || (offset_in_page(poff) == 0); if ((flags & MAP_SHARED) && !is_congruent) printk(KERN_INFO "%s(%d): emulate_mmap() can't share contents of incongruent mmap " "(addr=0x%lx,off=0x%llx)\n", current->comm, current->pid, start, off); DBG("mmap_body: mapping [0x%lx-0x%lx) %s with poff 0x%llx\n", pstart, pend, is_congruent ? "congruent" : "not congruent", poff); down_write(¤t->mm->mmap_sem); { if (!(flags & MAP_ANONYMOUS) && is_congruent) ret = do_mmap(file, pstart, pend - pstart, prot, flags | MAP_FIXED, poff); else ret = do_mmap(0, pstart, pend - pstart, prot | ((flags & MAP_ANONYMOUS) ? 0 : PROT_WRITE), flags | MAP_FIXED | MAP_ANONYMOUS, 0); } up_write(¤t->mm->mmap_sem); if (IS_ERR((void *) ret)) return ret; if (!is_congruent) { /* read the file contents */ inode = file->f_dentry->d_inode; if (!inode->i_fop || !file->f_op->read || ((*file->f_op->read)(file, (char *) pstart, pend - pstart, &poff) < 0)) { sys_munmap(pstart, pend - pstart); return -EINVAL; } if (!(prot & PROT_WRITE) && sys_mprotect(pstart, pend - pstart, prot) < 0) return -EINVAL; } return start; } #endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */ static inline unsigned int get_prot32 (unsigned int prot) { if (prot & PROT_WRITE) /* on x86, PROT_WRITE implies PROT_READ which implies PROT_EEC */ prot |= PROT_READ | PROT_WRITE | PROT_EXEC; else if (prot & (PROT_READ | PROT_EXEC)) /* on x86, there is no distinction between PROT_READ and PROT_EXEC */ prot |= (PROT_READ | PROT_EXEC); return prot; } unsigned long ia32_do_mmap (struct file *file, unsigned long addr, unsigned long len, int prot, int flags, loff_t offset) { DBG("ia32_do_mmap(file=%p,addr=0x%lx,len=0x%lx,prot=%x,flags=%x,offset=0x%llx)\n", file, addr, len, prot, flags, offset); if (file && (!file->f_op || !file->f_op->mmap)) return -ENODEV; len = IA32_PAGE_ALIGN(len); if (len == 0) return addr; if (len > IA32_PAGE_OFFSET || addr > IA32_PAGE_OFFSET - len) { if (flags & MAP_FIXED) return -ENOMEM; else return -EINVAL; } if (OFFSET4K(offset)) return -EINVAL; prot = get_prot32(prot); #if PAGE_SHIFT > IA32_PAGE_SHIFT down(&ia32_mmap_sem); { addr = emulate_mmap(file, addr, len, prot, flags, offset); } up(&ia32_mmap_sem); #else down_write(¤t->mm->mmap_sem); { addr = do_mmap(file, addr, len, prot, flags, offset); } up_write(¤t->mm->mmap_sem); #endif DBG("ia32_do_mmap: returning 0x%lx\n", addr); return addr; } /* * Linux/i386 didn't use to be able to handle more than 4 system call parameters, so these * system calls used a memory block for parameter passing.. */ struct mmap_arg_struct { unsigned int addr; unsigned int len; unsigned int prot; unsigned int flags; unsigned int fd; unsigned int offset; }; asmlinkage long sys32_mmap (struct mmap_arg_struct *arg) { struct mmap_arg_struct a; struct file *file = NULL; unsigned long addr; int flags; if (copy_from_user(&a, arg, sizeof(a))) return -EFAULT; if (OFFSET4K(a.offset)) return -EINVAL; flags = a.flags; flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); if (!(flags & MAP_ANONYMOUS)) { file = fget(a.fd); if (!file) return -EBADF; } addr = ia32_do_mmap(file, a.addr, a.len, a.prot, flags, a.offset); if (file) fput(file); return addr; } asmlinkage long sys32_mmap2 (unsigned int addr, unsigned int len, unsigned int prot, unsigned int flags, unsigned int fd, unsigned int pgoff) { struct file *file = NULL; unsigned long retval; flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); if (!(flags & MAP_ANONYMOUS)) { file = fget(fd); if (!file) return -EBADF; } retval = ia32_do_mmap(file, addr, len, prot, flags, (unsigned long) pgoff << IA32_PAGE_SHIFT); if (file) fput(file); return retval; } asmlinkage long sys32_munmap (unsigned int start, unsigned int len) { unsigned int end = start + len; long ret; #if PAGE_SHIFT <= IA32_PAGE_SHIFT ret = sys_munmap(start, end - start); #else if (start >= end) return -EINVAL; start = PAGE_ALIGN(start); end = PAGE_START(end); if (start >= end) return 0; down(&ia32_mmap_sem); { ret = sys_munmap(start, end - start); } up(&ia32_mmap_sem); #endif return ret; } #if PAGE_SHIFT > IA32_PAGE_SHIFT /* * When mprotect()ing a partial page, we set the permission to the union of the old * settings and the new settings. In other words, it's only possible to make access to a * partial page less restrictive. */ static long mprotect_subpage (unsigned long address, int new_prot) { int old_prot; struct vm_area_struct *vma; if (new_prot == PROT_NONE) return 0; /* optimize case where nothing changes... */ vma = find_vma(current->mm, address); old_prot = get_page_prot(vma, address); return sys_mprotect(address, PAGE_SIZE, new_prot | old_prot); } #endif /* PAGE_SHIFT > IA32_PAGE_SHIFT */ asmlinkage long sys32_mprotect (unsigned int start, unsigned int len, int prot) { unsigned long end = start + len; #if PAGE_SHIFT > IA32_PAGE_SHIFT long retval = 0; #endif prot = get_prot32(prot); #if PAGE_SHIFT <= IA32_PAGE_SHIFT return sys_mprotect(start, end - start, prot); #else if (OFFSET4K(start)) return -EINVAL; end = IA32_PAGE_ALIGN(end); if (end < start) return -EINVAL; down(&ia32_mmap_sem); { if (offset_in_page(start)) { /* start address is 4KB aligned but not page aligned. */ retval = mprotect_subpage(PAGE_START(start), prot); if (retval < 0) goto out; start = PAGE_ALIGN(start); if (start >= end) goto out; /* retval is already zero... */ } if (offset_in_page(end)) { /* end address is 4KB aligned but not page aligned. */ retval = mprotect_subpage(PAGE_START(end), prot); if (retval < 0) goto out; end = PAGE_START(end); } retval = sys_mprotect(start, end - start, prot); } out: up(&ia32_mmap_sem); return retval; #endif } asmlinkage long sys32_pipe (int *fd) { int retval; int fds[2]; retval = do_pipe(fds); if (retval) goto out; if (copy_to_user(fd, fds, sizeof(fds))) retval = -EFAULT; out: return retval; } static inline long get_tv32 (struct timeval *o, struct compat_timeval *i) { return (!access_ok(VERIFY_READ, i, sizeof(*i)) || (__get_user(o->tv_sec, &i->tv_sec) | __get_user(o->tv_usec, &i->tv_usec))); } static inline long put_tv32 (struct compat_timeval *o, struct timeval *i) { return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || (__put_user(i->tv_sec, &o->tv_sec) | __put_user(i->tv_usec, &o->tv_usec))); } asmlinkage unsigned long sys32_alarm (unsigned int seconds) { struct itimerval it_new, it_old; unsigned int oldalarm; it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0; it_new.it_value.tv_sec = seconds; it_new.it_value.tv_usec = 0; do_setitimer(ITIMER_REAL, &it_new, &it_old); oldalarm = it_old.it_value.tv_sec; /* ehhh.. We can't return 0 if we have an alarm pending.. */ /* And we'd better return too much than too little anyway */ if (it_old.it_value.tv_usec) oldalarm++; return oldalarm; } /* Translations due to time_t size differences. Which affects all sorts of things, like timeval and itimerval. */ extern struct timezone sys_tz; asmlinkage long sys32_gettimeofday (struct compat_timeval *tv, struct timezone *tz) { if (tv) { struct timeval ktv; do_gettimeofday(&ktv); if (put_tv32(tv, &ktv)) return -EFAULT; } if (tz) { if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) return -EFAULT; } return 0; } asmlinkage long sys32_settimeofday (struct compat_timeval *tv, struct timezone *tz) { struct timeval ktv; struct timespec kts; struct timezone ktz; if (tv) { if (get_tv32(&ktv, tv)) return -EFAULT; kts.tv_sec = ktv.tv_sec; kts.tv_nsec = ktv.tv_usec * 1000; } if (tz) { if (copy_from_user(&ktz, tz, sizeof(ktz))) return -EFAULT; } return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); } struct getdents32_callback { struct compat_dirent * current_dir; struct compat_dirent * previous; int count; int error; }; struct readdir32_callback { struct old_linux32_dirent * dirent; int count; }; static int filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino, unsigned int d_type) { struct compat_dirent * dirent; struct getdents32_callback * buf = (struct getdents32_callback *) __buf; int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4); buf->error = -EINVAL; /* only used if we fail.. */ if (reclen > buf->count) return -EINVAL; buf->error = -EFAULT; /* only used if we fail.. */ dirent = buf->previous; if (dirent) if (put_user(offset, &dirent->d_off)) return -EFAULT; dirent = buf->current_dir; buf->previous = dirent; if (put_user(ino, &dirent->d_ino) || put_user(reclen, &dirent->d_reclen) || copy_to_user(dirent->d_name, name, namlen) || put_user(0, dirent->d_name + namlen)) return -EFAULT; dirent = (struct compat_dirent *) ((char *) dirent + reclen); buf->current_dir = dirent; buf->count -= reclen; return 0; } asmlinkage long sys32_getdents (unsigned int fd, struct compat_dirent *dirent, unsigned int count) { struct file * file; struct compat_dirent * lastdirent; struct getdents32_callback buf; int error; error = -EBADF; file = fget(fd); if (!file) goto out; buf.current_dir = dirent; buf.previous = NULL; buf.count = count; buf.error = 0; error = vfs_readdir(file, filldir32, &buf); if (error < 0) goto out_putf; error = buf.error; lastdirent = buf.previous; if (lastdirent) { error = -EINVAL; if (put_user(file->f_pos, &lastdirent->d_off)) goto out_putf; error = count - buf.count; } out_putf: fput(file); out: return error; } static int fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, unsigned int d_type) { struct readdir32_callback * buf = (struct readdir32_callback *) __buf; struct old_linux32_dirent * dirent; if (buf->count) return -EINVAL; buf->count++; dirent = buf->dirent; if (put_user(ino, &dirent->d_ino) || put_user(offset, &dirent->d_offset) || put_user(namlen, &dirent->d_namlen) || copy_to_user(dirent->d_name, name, namlen) || put_user(0, dirent->d_name + namlen)) return -EFAULT; return 0; } asmlinkage long sys32_readdir (unsigned int fd, void *dirent, unsigned int count) { int error; struct file * file; struct readdir32_callback buf; error = -EBADF; file = fget(fd); if (!file) goto out; buf.count = 0; buf.dirent = dirent; error = vfs_readdir(file, fillonedir32, &buf); if (error >= 0) error = buf.count; fput(file); out: return error; } /* * We can actually return ERESTARTSYS instead of EINTR, but I'd * like to be certain this leads to no problems. So I return * EINTR just for safety. * * Update: ERESTARTSYS breaks at least the xview clock binary, so * I'm trying ERESTARTNOHAND which restart only when you want to. */ #define MAX_SELECT_SECONDS \ ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1) #define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y)) asmlinkage long sys32_select (int n, fd_set *inp, fd_set *outp, fd_set *exp, struct compat_timeval *tvp32) { fd_set_bits fds; char *bits; long timeout; int ret, size; timeout = MAX_SCHEDULE_TIMEOUT; if (tvp32) { time_t sec, usec; ret = -EFAULT; if (get_user(sec, &tvp32->tv_sec) || get_user(usec, &tvp32->tv_usec)) goto out_nofds; ret = -EINVAL; if (sec < 0 || usec < 0) goto out_nofds; if ((unsigned long) sec < MAX_SELECT_SECONDS) { timeout = ROUND_UP_TIME(usec, 1000000/HZ); timeout += sec * (unsigned long) HZ; } } ret = -EINVAL; if (n < 0) goto out_nofds; if (n > current->files->max_fdset) n = current->files->max_fdset; /* * We need 6 bitmaps (in/out/ex for both incoming and outgoing), * since we used fdset we need to allocate memory in units of * long-words. */ ret = -ENOMEM; size = FDS_BYTES(n); bits = kmalloc(6 * size, GFP_KERNEL); if (!bits) goto out_nofds; fds.in = (unsigned long *) bits; fds.out = (unsigned long *) (bits + size); fds.ex = (unsigned long *) (bits + 2*size); fds.res_in = (unsigned long *) (bits + 3*size); fds.res_out = (unsigned long *) (bits + 4*size); fds.res_ex = (unsigned long *) (bits + 5*size); if ((ret = get_fd_set(n, inp, fds.in)) || (ret = get_fd_set(n, outp, fds.out)) || (ret = get_fd_set(n, exp, fds.ex))) goto out; zero_fd_set(n, fds.res_in); zero_fd_set(n, fds.res_out); zero_fd_set(n, fds.res_ex); ret = do_select(n, &fds, &timeout); if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) { time_t sec = 0, usec = 0; if (timeout) { sec = timeout / HZ; usec = timeout % HZ; usec *= (1000000/HZ); } if (put_user(sec, &tvp32->tv_sec) || put_user(usec, &tvp32->tv_usec)) { ret = -EFAULT; goto out; } } if (ret < 0) goto out; if (!ret) { ret = -ERESTARTNOHAND; if (signal_pending(current)) goto out; ret = 0; } set_fd_set(n, inp, fds.res_in); set_fd_set(n, outp, fds.res_out); set_fd_set(n, exp, fds.res_ex); out: kfree(bits); out_nofds: return ret; } struct sel_arg_struct { unsigned int n; unsigned int inp; unsigned int outp; unsigned int exp; unsigned int tvp; }; asmlinkage long sys32_old_select (struct sel_arg_struct *arg) { struct sel_arg_struct a; if (copy_from_user(&a, arg, sizeof(a))) return -EFAULT; return sys32_select(a.n, (fd_set *) A(a.inp), (fd_set *) A(a.outp), (fd_set *) A(a.exp), (struct compat_timeval *) A(a.tvp)); } static struct iovec * get_compat_iovec (struct compat_iovec *iov32, struct iovec *iov_buf, u32 count, int type) { u32 i, buf, len; struct iovec *ivp, *iov; /* Get the "struct iovec" from user memory */ if (!count) return 0; if (verify_area(VERIFY_READ, iov32, sizeof(struct compat_iovec)*count)) return NULL; if (count > UIO_MAXIOV) return NULL; if (count > UIO_FASTIOV) { iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL); if (!iov) return NULL; } else iov = iov_buf; ivp = iov; for (i = 0; i < count; i++) { if (__get_user(len, &iov32->iov_len) || __get_user(buf, &iov32->iov_base)) { if (iov != iov_buf) kfree(iov); return NULL; } if (verify_area(type, (void *)A(buf), len)) { if (iov != iov_buf) kfree(iov); return((struct iovec *)0); } ivp->iov_base = (void *)A(buf); ivp->iov_len = (__kernel_size_t) len; iov32++; ivp++; } return iov; } asmlinkage long sys32_readv (int fd, struct compat_iovec *vector, u32 count) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov; long ret; mm_segment_t old_fs = get_fs(); iov = get_compat_iovec(vector, iovstack, count, VERIFY_WRITE); if (!iov) return -EFAULT; set_fs(KERNEL_DS); ret = sys_readv(fd, iov, count); set_fs(old_fs); if (iov != iovstack) kfree(iov); return ret; } asmlinkage long sys32_writev (int fd, struct compat_iovec *vector, u32 count) { struct iovec iovstack[UIO_FASTIOV]; struct iovec *iov; long ret; mm_segment_t old_fs = get_fs(); iov = get_compat_iovec(vector, iovstack, count, VERIFY_READ); if (!iov) return -EFAULT; set_fs(KERNEL_DS); ret = sys_writev(fd, iov, count); set_fs(old_fs); if (iov != iovstack) kfree(iov); return ret; } #define SEMOP 1 #define SEMGET 2 #define SEMCTL 3 #define SEMTIMEDOP 4 #define MSGSND 11 #define MSGRCV 12 #define MSGGET 13 #define MSGCTL 14 #define SHMAT 21 #define SHMDT 22 #define SHMGET 23 #define SHMCTL 24 asmlinkage long sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth) { int version; version = call >> 16; /* hack for backward compatibility */ call &= 0xffff; switch (call) { case SEMTIMEDOP: if (fifth) return compat_sys_semtimedop(first, compat_ptr(ptr), second, compat_ptr(fifth)); /* else fall through for normal semop() */ case SEMOP: /* struct sembuf is the same on 32 and 64bit :)) */ return sys_semtimedop(first, compat_ptr(ptr), second, NULL); case SEMGET: return sys_semget(first, second, third); case SEMCTL: return compat_sys_semctl(first, second, third, compat_ptr(ptr)); case MSGSND: return compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); case MSGRCV: return compat_sys_msgrcv(first, second, fifth, third, version, compat_ptr(ptr)); case MSGGET: return sys_msgget((key_t) first, second); case MSGCTL: return compat_sys_msgctl(first, second, compat_ptr(ptr)); case SHMAT: return compat_sys_shmat(first, second, third, version, compat_ptr(ptr)); break; case SHMDT: return sys_shmdt(compat_ptr(ptr)); case SHMGET: return sys_shmget(first, second, third); case SHMCTL: return compat_sys_shmctl(first, second, compat_ptr(ptr)); default: return -ENOSYS; } return -EINVAL; } /* * sys_time() can be implemented in user-level using * sys_gettimeofday(). IA64 did this but i386 Linux did not * so we have to implement this system call here. */ asmlinkage long sys32_time (int *tloc) { int i; struct timeval tv; do_gettimeofday(&tv); i = tv.tv_sec; if (tloc) { if (put_user(i, tloc)) i = -EFAULT; } return i; } asmlinkage long compat_sys_wait4 (compat_pid_t pid, compat_uint_t * stat_addr, int options, struct compat_rusage *ru); asmlinkage long sys32_waitpid (int pid, unsigned int *stat_addr, int options) { return compat_sys_wait4(pid, stat_addr, options, NULL); } static unsigned int ia32_peek (struct pt_regs *regs, struct task_struct *child, unsigned long addr, unsigned int *val) { size_t copied; unsigned int ret; copied = access_process_vm(child, addr, val, sizeof(*val), 0); return (copied != sizeof(ret)) ? -EIO : 0; } static unsigned int ia32_poke (struct pt_regs *regs, struct task_struct *child, unsigned long addr, unsigned int val) { if (access_process_vm(child, addr, &val, sizeof(val), 1) != sizeof(val)) return -EIO; return 0; } /* * The order in which registers are stored in the ptrace regs structure */ #define PT_EBX 0 #define PT_ECX 1 #define PT_EDX 2 #define PT_ESI 3 #define PT_EDI 4 #define PT_EBP 5 #define PT_EAX 6 #define PT_DS 7 #define PT_ES 8 #define PT_FS 9 #define PT_GS 10 #define PT_ORIG_EAX 11 #define PT_EIP 12 #define PT_CS 13 #define PT_EFL 14 #define PT_UESP 15 #define PT_SS 16 static unsigned int getreg (struct task_struct *child, int regno) { struct pt_regs *child_regs; child_regs = ia64_task_regs(child); switch (regno / sizeof(int)) { case PT_EBX: return child_regs->r11; case PT_ECX: return child_regs->r9; case PT_EDX: return child_regs->r10; case PT_ESI: return child_regs->r14; case PT_EDI: return child_regs->r15; case PT_EBP: return child_regs->r13; case PT_EAX: return child_regs->r8; case PT_ORIG_EAX: return child_regs->r1; /* see dispatch_to_ia32_handler() */ case PT_EIP: return child_regs->cr_iip; case PT_UESP: return child_regs->r12; case PT_EFL: return child->thread.eflag; case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS: return __USER_DS; case PT_CS: return __USER_CS; default: printk(KERN_ERR "ia32.getreg(): unknown register %d\n", regno); break; } return 0; } static void putreg (struct task_struct *child, int regno, unsigned int value) { struct pt_regs *child_regs; child_regs = ia64_task_regs(child); switch (regno / sizeof(int)) { case PT_EBX: child_regs->r11 = value; break; case PT_ECX: child_regs->r9 = value; break; case PT_EDX: child_regs->r10 = value; break; case PT_ESI: child_regs->r14 = value; break; case PT_EDI: child_regs->r15 = value; break; case PT_EBP: child_regs->r13 = value; break; case PT_EAX: child_regs->r8 = value; break; case PT_ORIG_EAX: child_regs->r1 = value; break; case PT_EIP: child_regs->cr_iip = value; break; case PT_UESP: child_regs->r12 = value; break; case PT_EFL: child->thread.eflag = value; break; case PT_DS: case PT_ES: case PT_FS: case PT_GS: case PT_SS: if (value != __USER_DS) printk(KERN_ERR "ia32.putreg: attempt to set invalid segment register %d = %x\n", regno, value); break; case PT_CS: if (value != __USER_CS) printk(KERN_ERR "ia32.putreg: attempt to to set invalid segment register %d = %x\n", regno, value); break; default: printk(KERN_ERR "ia32.putreg: unknown register %d\n", regno); break; } } static void put_fpreg (int regno, struct _fpreg_ia32 *reg, struct pt_regs *ptp, struct switch_stack *swp, int tos) { struct _fpreg_ia32 *f; char buf[32]; f = (struct _fpreg_ia32 *)(((unsigned long)buf + 15) & ~15); if ((regno += tos) >= 8) regno -= 8; switch (regno) { case 0: ia64f2ia32f(f, &ptp->f8); break; case 1: ia64f2ia32f(f, &ptp->f9); break; case 2: ia64f2ia32f(f, &ptp->f10); break; case 3: ia64f2ia32f(f, &ptp->f11); break; case 4: case 5: case 6: case 7: ia64f2ia32f(f, &swp->f12 + (regno - 4)); break; } copy_to_user(reg, f, sizeof(*reg)); } static void get_fpreg (int regno, struct _fpreg_ia32 *reg, struct pt_regs *ptp, struct switch_stack *swp, int tos) { if ((regno += tos) >= 8) regno -= 8; switch (regno) { case 0: copy_from_user(&ptp->f8, reg, sizeof(*reg)); break; case 1: copy_from_user(&ptp->f9, reg, sizeof(*reg)); break; case 2: copy_from_user(&ptp->f10, reg, sizeof(*reg)); break; case 3: copy_from_user(&ptp->f11, reg, sizeof(*reg)); break; case 4: case 5: case 6: case 7: copy_from_user(&swp->f12 + (regno - 4), reg, sizeof(*reg)); break; } return; } int save_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct *save) { struct switch_stack *swp; struct pt_regs *ptp; int i, tos; if (!access_ok(VERIFY_WRITE, save, sizeof(*save))) return -EFAULT; __put_user(tsk->thread.fcr & 0xffff, &save->cwd); __put_user(tsk->thread.fsr & 0xffff, &save->swd); __put_user((tsk->thread.fsr>>16) & 0xffff, &save->twd); __put_user(tsk->thread.fir, &save->fip); __put_user((tsk->thread.fir>>32) & 0xffff, &save->fcs); __put_user(tsk->thread.fdr, &save->foo); __put_user((tsk->thread.fdr>>32) & 0xffff, &save->fos); /* * Stack frames start with 16-bytes of temp space */ swp = (struct switch_stack *)(tsk->thread.ksp + 16); ptp = ia64_task_regs(tsk); tos = (tsk->thread.fsr >> 11) & 7; for (i = 0; i < 8; i++) put_fpreg(i, &save->st_space[i], ptp, swp, tos); return 0; } static int restore_ia32_fpstate (struct task_struct *tsk, struct ia32_user_i387_struct *save) { struct switch_stack *swp; struct pt_regs *ptp; int i, tos; unsigned int fsrlo, fsrhi, num32; if (!access_ok(VERIFY_READ, save, sizeof(*save))) return(-EFAULT); __get_user(num32, (unsigned int *)&save->cwd); tsk->thread.fcr = (tsk->thread.fcr & (~0x1f3f)) | (num32 & 0x1f3f); __get_user(fsrlo, (unsigned int *)&save->swd); __get_user(fsrhi, (unsigned int *)&save->twd); num32 = (fsrhi << 16) | fsrlo; tsk->thread.fsr = (tsk->thread.fsr & (~0xffffffff)) | num32; __get_user(num32, (unsigned int *)&save->fip); tsk->thread.fir = (tsk->thread.fir & (~0xffffffff)) | num32; __get_user(num32, (unsigned int *)&save->foo); tsk->thread.fdr = (tsk->thread.fdr & (~0xffffffff)) | num32; /* * Stack frames start with 16-bytes of temp space */ swp = (struct switch_stack *)(tsk->thread.ksp + 16); ptp = ia64_task_regs(tsk); tos = (tsk->thread.fsr >> 11) & 7; for (i = 0; i < 8; i++) get_fpreg(i, &save->st_space[i], ptp, swp, tos); return 0; } int save_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct *save) { struct switch_stack *swp; struct pt_regs *ptp; int i, tos; unsigned long mxcsr=0; unsigned long num128[2]; if (!access_ok(VERIFY_WRITE, save, sizeof(*save))) return -EFAULT; __put_user(tsk->thread.fcr & 0xffff, &save->cwd); __put_user(tsk->thread.fsr & 0xffff, &save->swd); __put_user((tsk->thread.fsr>>16) & 0xffff, &save->twd); __put_user(tsk->thread.fir, &save->fip); __put_user((tsk->thread.fir>>32) & 0xffff, &save->fcs); __put_user(tsk->thread.fdr, &save->foo); __put_user((tsk->thread.fdr>>32) & 0xffff, &save->fos); /* * Stack frames start with 16-bytes of temp space */ swp = (struct switch_stack *)(tsk->thread.ksp + 16); ptp = ia64_task_regs(tsk); tos = (tsk->thread.fsr >> 11) & 7; for (i = 0; i < 8; i++) put_fpreg(i, (struct _fpreg_ia32 *)&save->st_space[4*i], ptp, swp, tos); mxcsr = ((tsk->thread.fcr>>32) & 0xff80) | ((tsk->thread.fsr>>32) & 0x3f); __put_user(mxcsr & 0xffff, &save->mxcsr); for (i = 0; i < 8; i++) { memcpy(&(num128[0]), &(swp->f16) + i*2, sizeof(unsigned long)); memcpy(&(num128[1]), &(swp->f17) + i*2, sizeof(unsigned long)); copy_to_user(&save->xmm_space[0] + 4*i, num128, sizeof(struct _xmmreg_ia32)); } return 0; } static int restore_ia32_fpxstate (struct task_struct *tsk, struct ia32_user_fxsr_struct *save) { struct switch_stack *swp; struct pt_regs *ptp; int i, tos; unsigned int fsrlo, fsrhi, num32; int mxcsr; unsigned long num64; unsigned long num128[2]; if (!access_ok(VERIFY_READ, save, sizeof(*save))) return(-EFAULT); __get_user(num32, (unsigned int *)&save->cwd); tsk->thread.fcr = (tsk->thread.fcr & (~0x1f3f)) | (num32 & 0x1f3f); __get_user(fsrlo, (unsigned int *)&save->swd); __get_user(fsrhi, (unsigned int *)&save->twd); num32 = (fsrhi << 16) | fsrlo; tsk->thread.fsr = (tsk->thread.fsr & (~0xffffffff)) | num32; __get_user(num32, (unsigned int *)&save->fip); tsk->thread.fir = (tsk->thread.fir & (~0xffffffff)) | num32; __get_user(num32, (unsigned int *)&save->foo); tsk->thread.fdr = (tsk->thread.fdr & (~0xffffffff)) | num32; /* * Stack frames start with 16-bytes of temp space */ swp = (struct switch_stack *)(tsk->thread.ksp + 16); ptp = ia64_task_regs(tsk); tos = (tsk->thread.fsr >> 11) & 7; for (i = 0; i < 8; i++) get_fpreg(i, (struct _fpreg_ia32 *)&save->st_space[4*i], ptp, swp, tos); __get_user(mxcsr, (unsigned int *)&save->mxcsr); num64 = mxcsr & 0xff10; tsk->thread.fcr = (tsk->thread.fcr & (~0xff1000000000)) | (num64<<32); num64 = mxcsr & 0x3f; tsk->thread.fsr = (tsk->thread.fsr & (~0x3f00000000)) | (num64<<32); for (i = 0; i < 8; i++) { copy_from_user(num128, &save->xmm_space[0] + 4*i, sizeof(struct _xmmreg_ia32)); memcpy(&(swp->f16) + i*2, &(num128[0]), sizeof(unsigned long)); memcpy(&(swp->f17) + i*2, &(num128[1]), sizeof(unsigned long)); } return 0; } /* * Note that the IA32 version of `ptrace' calls the IA64 routine for * many of the requests. This will only work for requests that do * not need access to the calling processes `pt_regs' which is located * at the address of `stack'. Once we call the IA64 `sys_ptrace' then * the address of `stack' will not be the address of the `pt_regs'. */ asmlinkage long sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data, long arg4, long arg5, long arg6, long arg7, long stack) { struct pt_regs *regs = (struct pt_regs *) &stack; struct task_struct *child; unsigned int value, tmp; long i, ret; lock_kernel(); if (request == PTRACE_TRACEME) { ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack); goto out; } ret = -ESRCH; read_lock(&tasklist_lock); child = find_task_by_pid(pid); if (child) get_task_struct(child); read_unlock(&tasklist_lock); if (!child) goto out; ret = -EPERM; if (pid == 1) /* no messing around with init! */ goto out_tsk; if (request == PTRACE_ATTACH) { ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack); goto out_tsk; } ret = ptrace_check_attach(child, request == PTRACE_KILL); if (ret < 0) goto out_tsk; switch (request) { case PTRACE_PEEKTEXT: case PTRACE_PEEKDATA: /* read word at location addr */ ret = ia32_peek(regs, child, addr, &value); if (ret == 0) ret = put_user(value, (unsigned int *) A(data)); else ret = -EIO; goto out_tsk; case PTRACE_POKETEXT: case PTRACE_POKEDATA: /* write the word at location addr */ ret = ia32_poke(regs, child, addr, data); goto out_tsk; case PTRACE_PEEKUSR: /* read word at addr in USER area */ ret = -EIO; if ((addr & 3) || addr > 17*sizeof(int)) break; tmp = getreg(child, addr); if (!put_user(tmp, (unsigned int *) A(data))) ret = 0; break; case PTRACE_POKEUSR: /* write word at addr in USER area */ ret = -EIO; if ((addr & 3) || addr > 17*sizeof(int)) break; putreg(child, addr, data); ret = 0; break; case IA32_PTRACE_GETREGS: if (!access_ok(VERIFY_WRITE, (int *) A(data), 17*sizeof(int))) { ret = -EIO; break; } for (i = 0; i < (int) (17*sizeof(int)); i += sizeof(int) ) { put_user(getreg(child, i), (unsigned int *) A(data)); data += sizeof(int); } ret = 0; break; case IA32_PTRACE_SETREGS: if (!access_ok(VERIFY_READ, (int *) A(data), 17*sizeof(int))) { ret = -EIO; break; } for (i = 0; i < (int) (17*sizeof(int)); i += sizeof(int) ) { get_user(tmp, (unsigned int *) A(data)); putreg(child, i, tmp); data += sizeof(int); } ret = 0; break; case IA32_PTRACE_GETFPREGS: ret = save_ia32_fpstate(child, (struct ia32_user_i387_struct *) A(data)); break; case IA32_PTRACE_GETFPXREGS: ret = save_ia32_fpxstate(child, (struct ia32_user_fxsr_struct *) A(data)); break; case IA32_PTRACE_SETFPREGS: ret = restore_ia32_fpstate(child, (struct ia32_user_i387_struct *) A(data)); break; case IA32_PTRACE_SETFPXREGS: ret = restore_ia32_fpxstate(child, (struct ia32_user_fxsr_struct *) A(data)); break; case PTRACE_SYSCALL: /* continue, stop after next syscall */ case PTRACE_CONT: /* restart after signal. */ case PTRACE_KILL: case PTRACE_SINGLESTEP: /* execute chile for one instruction */ case PTRACE_DETACH: /* detach a process */ ret = sys_ptrace(request, pid, addr, data, arg4, arg5, arg6, arg7, stack); break; default: ret = ptrace_request(child, request, addr, data); break; } out_tsk: put_task_struct(child); out: unlock_kernel(); return ret; } /* * The IA64 maps 4 I/O ports for each 4K page */ #define IOLEN ((65536 / 4) * 4096) asmlinkage long sys32_iopl (int level) { extern unsigned long ia64_iobase; int fd; struct file * file; unsigned int old; unsigned long addr; mm_segment_t old_fs = get_fs (); if (level != 3) return(-EINVAL); /* Trying to gain more privileges? */ old = ia64_getreg(_IA64_REG_AR_EFLAG); if ((unsigned int) level > ((old >> 12) & 3)) { if (!capable(CAP_SYS_RAWIO)) return -EPERM; } set_fs(KERNEL_DS); fd = sys_open("/dev/mem", O_SYNC | O_RDWR, 0); set_fs(old_fs); if (fd < 0) return fd; file = fget(fd); if (file == NULL) { sys_close(fd); return(-EFAULT); } down_write(¤t->mm->mmap_sem); addr = do_mmap_pgoff(file, IA32_IOBASE, IOLEN, PROT_READ|PROT_WRITE, MAP_SHARED, (ia64_iobase & ~PAGE_OFFSET) >> PAGE_SHIFT); up_write(¤t->mm->mmap_sem); if (addr >= 0) { old = (old & ~0x3000) | (level << 12); ia64_setreg(_IA64_REG_AR_EFLAG, old); } fput(file); sys_close(fd); return 0; } asmlinkage long sys32_ioperm (unsigned int from, unsigned int num, int on) { /* * Since IA64 doesn't have permission bits we'd have to go to * a lot of trouble to simulate them in software. There's * no point, only trusted programs can make this call so we'll * just turn it into an iopl call and let the process have * access to all I/O ports. * * XXX proper ioperm() support should be emulated by * manipulating the page protections... */ return sys32_iopl(3); } typedef struct { unsigned int ss_sp; unsigned int ss_flags; unsigned int ss_size; } ia32_stack_t; asmlinkage long sys32_sigaltstack (ia32_stack_t *uss32, ia32_stack_t *uoss32, long arg2, long arg3, long arg4, long arg5, long arg6, long arg7, long stack) { struct pt_regs *pt = (struct pt_regs *) &stack; stack_t uss, uoss; ia32_stack_t buf32; int ret; mm_segment_t old_fs = get_fs(); if (uss32) if (copy_from_user(&buf32, uss32, sizeof(ia32_stack_t))) return -EFAULT; uss.ss_sp = (void *) (long) buf32.ss_sp; uss.ss_flags = buf32.ss_flags; /* MINSIGSTKSZ is different for ia32 vs ia64. We lie here to pass the check and set it to the user requested value later */ if ((buf32.ss_flags != SS_DISABLE) && (buf32.ss_size < MINSIGSTKSZ_IA32)) { ret = -ENOMEM; goto out; } uss.ss_size = MINSIGSTKSZ; set_fs(KERNEL_DS); ret = do_sigaltstack(uss32 ? &uss : NULL, &uoss, pt->r12); current->sas_ss_size = buf32.ss_size; set_fs(old_fs); out: if (ret < 0) return(ret); if (uoss32) { buf32.ss_sp = (long) uoss.ss_sp; buf32.ss_flags = uoss.ss_flags; buf32.ss_size = uoss.ss_size; if (copy_to_user(uoss32, &buf32, sizeof(ia32_stack_t))) return -EFAULT; } return ret; } asmlinkage int sys32_pause (void) { current->state = TASK_INTERRUPTIBLE; schedule(); return -ERESTARTNOHAND; } asmlinkage int sys32_msync (unsigned int start, unsigned int len, int flags) { unsigned int addr; if (OFFSET4K(start)) return -EINVAL; addr = PAGE_START(start); return sys_msync(addr, len + (start - addr), flags); } struct sysctl32 { unsigned int name; int nlen; unsigned int oldval; unsigned int oldlenp; unsigned int newval; unsigned int newlen; unsigned int __unused[4]; }; asmlinkage long sys32_sysctl (struct sysctl32 *args) { #ifdef CONFIG_SYSCTL struct sysctl32 a32; mm_segment_t old_fs = get_fs (); void *oldvalp, *newvalp; size_t oldlen; int *namep; long ret; if (copy_from_user(&a32, args, sizeof(a32))) return -EFAULT; /* * We need to pre-validate these because we have to disable address checking * before calling do_sysctl() because of OLDLEN but we can't run the risk of the * user specifying bad addresses here. Well, since we're dealing with 32 bit * addresses, we KNOW that access_ok() will always succeed, so this is an * expensive NOP, but so what... */ namep = (int *) A(a32.name); oldvalp = (void *) A(a32.oldval); newvalp = (void *) A(a32.newval); if ((oldvalp && get_user(oldlen, (int *) A(a32.oldlenp))) || !access_ok(VERIFY_WRITE, namep, 0) || !access_ok(VERIFY_WRITE, oldvalp, 0) || !access_ok(VERIFY_WRITE, newvalp, 0)) return -EFAULT; set_fs(KERNEL_DS); lock_kernel(); ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen); unlock_kernel(); set_fs(old_fs); if (oldvalp && put_user (oldlen, (int *) A(a32.oldlenp))) return -EFAULT; return ret; #else return -ENOSYS; #endif } asmlinkage long sys32_newuname (struct new_utsname *name) { int ret = sys_newuname(name); if (!ret) if (copy_to_user(name->machine, "i686\0\0\0", 8)) ret = -EFAULT; return ret; } asmlinkage long sys32_getresuid16 (u16 *ruid, u16 *euid, u16 *suid) { uid_t a, b, c; int ret; mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); ret = sys_getresuid(&a, &b, &c); set_fs(old_fs); if (put_user(a, ruid) || put_user(b, euid) || put_user(c, suid)) return -EFAULT; return ret; } asmlinkage long sys32_getresgid16 (u16 *rgid, u16 *egid, u16 *sgid) { gid_t a, b, c; int ret; mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); ret = sys_getresgid(&a, &b, &c); set_fs(old_fs); if (ret) return ret; return put_user(a, rgid) | put_user(b, egid) | put_user(c, sgid); } asmlinkage long sys32_lseek (unsigned int fd, int offset, unsigned int whence) { /* Sign-extension of "offset" is important here... */ return sys_lseek(fd, offset, whence); } static int groups16_to_user(short *grouplist, struct group_info *group_info) { int i; short group; for (i = 0; i < group_info->ngroups; i++) { group = (short)GROUP_AT(group_info, i); if (put_user(group, grouplist+i)) return -EFAULT; } return 0; } static int groups16_from_user(struct group_info *group_info, short *grouplist) { int i; short group; for (i = 0; i < group_info->ngroups; i++) { if (get_user(group, grouplist+i)) return -EFAULT; GROUP_AT(group_info, i) = (gid_t)group; } return 0; } asmlinkage long sys32_getgroups16 (int gidsetsize, short *grouplist) { int i; if (gidsetsize < 0) return -EINVAL; get_group_info(current->group_info); i = current->group_info->ngroups; if (gidsetsize) { if (i > gidsetsize) { i = -EINVAL; goto out; } if (groups16_to_user(grouplist, current->group_info)) { i = -EFAULT; goto out; } } out: put_group_info(current->group_info); return i; } asmlinkage long sys32_setgroups16 (int gidsetsize, short *grouplist) { struct group_info *group_info; int retval; if (!capable(CAP_SETGID)) return -EPERM; if ((unsigned)gidsetsize > NGROUPS_MAX) return -EINVAL; group_info = groups_alloc(gidsetsize); if (!group_info) return -ENOMEM; retval = groups16_from_user(group_info, grouplist); if (retval) { put_group_info(group_info); return retval; } retval = set_current_groups(group_info); put_group_info(group_info); return retval; } asmlinkage long sys32_truncate64 (unsigned int path, unsigned int len_lo, unsigned int len_hi) { return sys_truncate((const char *) A(path), ((unsigned long) len_hi << 32) | len_lo); } asmlinkage long sys32_ftruncate64 (int fd, unsigned int len_lo, unsigned int len_hi) { return sys_ftruncate(fd, ((unsigned long) len_hi << 32) | len_lo); } static int putstat64 (struct stat64 *ubuf, struct kstat *kbuf) { int err; u64 hdev; if (clear_user(ubuf, sizeof(*ubuf))) return -EFAULT; hdev = huge_encode_dev(kbuf->dev); err = __put_user(hdev, (u32*)&ubuf->st_dev); err |= __put_user(hdev >> 32, ((u32*)&ubuf->st_dev) + 1); err |= __put_user(kbuf->ino, &ubuf->__st_ino); err |= __put_user(kbuf->ino, &ubuf->st_ino_lo); err |= __put_user(kbuf->ino >> 32, &ubuf->st_ino_hi); err |= __put_user(kbuf->mode, &ubuf->st_mode); err |= __put_user(kbuf->nlink, &ubuf->st_nlink); err |= __put_user(kbuf->uid, &ubuf->st_uid); err |= __put_user(kbuf->gid, &ubuf->st_gid); hdev = huge_encode_dev(kbuf->rdev); err = __put_user(hdev, (u32*)&ubuf->st_rdev); err |= __put_user(hdev >> 32, ((u32*)&ubuf->st_rdev) + 1); err |= __put_user(kbuf->size, &ubuf->st_size_lo); err |= __put_user((kbuf->size >> 32), &ubuf->st_size_hi); err |= __put_user(kbuf->atime.tv_sec, &ubuf->st_atime); err |= __put_user(kbuf->atime.tv_nsec, &ubuf->st_atime_nsec); err |= __put_user(kbuf->mtime.tv_sec, &ubuf->st_mtime); err |= __put_user(kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec); err |= __put_user(kbuf->ctime.tv_sec, &ubuf->st_ctime); err |= __put_user(kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec); err |= __put_user(kbuf->blksize, &ubuf->st_blksize); err |= __put_user(kbuf->blocks, &ubuf->st_blocks); return err; } asmlinkage long sys32_stat64 (char *filename, struct stat64 *statbuf) { struct kstat s; long ret = vfs_stat(filename, &s); if (!ret) ret = putstat64(statbuf, &s); return ret; } asmlinkage long sys32_lstat64 (char *filename, struct stat64 *statbuf) { struct kstat s; long ret = vfs_lstat(filename, &s); if (!ret) ret = putstat64(statbuf, &s); return ret; } asmlinkage long sys32_fstat64 (unsigned int fd, struct stat64 *statbuf) { struct kstat s; long ret = vfs_fstat(fd, &s); if (!ret) ret = putstat64(statbuf, &s); return ret; } struct sysinfo32 { s32 uptime; u32 loads[3]; u32 totalram; u32 freeram; u32 sharedram; u32 bufferram; u32 totalswap; u32 freeswap; u16 procs; u16 pad; u32 totalhigh; u32 freehigh; u32 mem_unit; char _f[8]; }; asmlinkage long sys32_sysinfo (struct sysinfo32 *info) { struct sysinfo s; long ret, err; int bitcount = 0; mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); ret = sys_sysinfo(&s); set_fs(old_fs); /* Check to see if any memory value is too large for 32-bit and * scale down if needed. */ if ((s.totalram >> 32) || (s.totalswap >> 32)) { while (s.mem_unit < PAGE_SIZE) { s.mem_unit <<= 1; bitcount++; } s.totalram >>= bitcount; s.freeram >>= bitcount; s.sharedram >>= bitcount; s.bufferram >>= bitcount; s.totalswap >>= bitcount; s.freeswap >>= bitcount; s.totalhigh >>= bitcount; s.freehigh >>= bitcount; } if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) return -EFAULT; err = __put_user(s.uptime, &info->uptime); err |= __put_user(s.loads[0], &info->loads[0]); err |= __put_user(s.loads[1], &info->loads[1]); err |= __put_user(s.loads[2], &info->loads[2]); err |= __put_user(s.totalram, &info->totalram); err |= __put_user(s.freeram, &info->freeram); err |= __put_user(s.sharedram, &info->sharedram); err |= __put_user(s.bufferram, &info->bufferram); err |= __put_user(s.totalswap, &info->totalswap); err |= __put_user(s.freeswap, &info->freeswap); err |= __put_user(s.procs, &info->procs); err |= __put_user (s.totalhigh, &info->totalhigh); err |= __put_user (s.freehigh, &info->freehigh); err |= __put_user (s.mem_unit, &info->mem_unit); if (err) return -EFAULT; return ret; } asmlinkage long sys32_sched_rr_get_interval (pid_t pid, struct compat_timespec *interval) { mm_segment_t old_fs = get_fs(); struct timespec t; long ret; set_fs(KERNEL_DS); ret = sys_sched_rr_get_interval(pid, &t); set_fs(old_fs); if (put_compat_timespec(&t, interval)) return -EFAULT; return ret; } asmlinkage long sys32_pread (unsigned int fd, void *buf, unsigned int count, u32 pos_lo, u32 pos_hi) { return sys_pread64(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo); } asmlinkage long sys32_pwrite (unsigned int fd, void *buf, unsigned int count, u32 pos_lo, u32 pos_hi) { return sys_pwrite64(fd, buf, count, ((unsigned long) pos_hi << 32) | pos_lo); } asmlinkage long sys32_sendfile (int out_fd, int in_fd, int *offset, unsigned int count) { mm_segment_t old_fs = get_fs(); long ret; off_t of; if (offset && get_user(of, offset)) return -EFAULT; set_fs(KERNEL_DS); ret = sys_sendfile(out_fd, in_fd, offset ? &of : NULL, count); set_fs(old_fs); if (!ret && offset && put_user(of, offset)) return -EFAULT; return ret; } asmlinkage long sys32_personality (unsigned int personality) { long ret; if (current->personality == PER_LINUX32 && personality == PER_LINUX) personality = PER_LINUX32; ret = sys_personality(personality); if (ret == PER_LINUX32) ret = PER_LINUX; return ret; } asmlinkage unsigned long sys32_brk (unsigned int brk) { unsigned long ret, obrk; struct mm_struct *mm = current->mm; obrk = mm->brk; ret = sys_brk(brk); if (ret < obrk) clear_user((void *) ret, PAGE_ALIGN(ret) - ret); return ret; } /* * Exactly like fs/open.c:sys_open(), except that it doesn't set the O_LARGEFILE flag. */ asmlinkage long sys32_open (const char * filename, int flags, int mode) { char * tmp; int fd, error; tmp = getname(filename); fd = PTR_ERR(tmp); if (!IS_ERR(tmp)) { fd = get_unused_fd(); if (fd >= 0) { struct file *f = filp_open(tmp, flags, mode); error = PTR_ERR(f); if (IS_ERR(f)) goto out_error; fd_install(fd, f); } out: putname(tmp); } return fd; out_error: put_unused_fd(fd); fd = error; goto out; } /* Structure for ia32 emulation on ia64 */ struct epoll_event32 { u32 events; u32 data[2]; }; asmlinkage long sys32_epoll_ctl(int epfd, int op, int fd, struct epoll_event32 *event) { mm_segment_t old_fs = get_fs(); struct epoll_event event64; int error = -EFAULT; u32 data_halfword; if ((error = verify_area(VERIFY_READ, event, sizeof(struct epoll_event32)))) return error; __get_user(event64.events, &event->events); __get_user(data_halfword, &event->data[0]); event64.data = data_halfword; __get_user(data_halfword, &event->data[1]); event64.data |= (u64)data_halfword << 32; set_fs(KERNEL_DS); error = sys_epoll_ctl(epfd, op, fd, &event64); set_fs(old_fs); return error; } asmlinkage long sys32_epoll_wait(int epfd, struct epoll_event32 *events, int maxevents, int timeout) { struct epoll_event *events64 = NULL; mm_segment_t old_fs = get_fs(); int error, numevents, size; int evt_idx; int do_free_pages = 0; if (maxevents <= 0) { return -EINVAL; } /* Verify that the area passed by the user is writeable */ if ((error = verify_area(VERIFY_WRITE, events, maxevents * sizeof(struct epoll_event32)))) return error; /* * Allocate space for the intermediate copy. If the space needed * is large enough to cause kmalloc to fail, then try again with * __get_free_pages. */ size = maxevents * sizeof(struct epoll_event); events64 = kmalloc(size, GFP_KERNEL); if (events64 == NULL) { events64 = (struct epoll_event *) __get_free_pages(GFP_KERNEL, get_order(size)); if (events64 == NULL) return -ENOMEM; do_free_pages = 1; } /* Do the system call */ set_fs(KERNEL_DS); /* copy_to/from_user should work on kernel mem*/ numevents = sys_epoll_wait(epfd, events64, maxevents, timeout); set_fs(old_fs); /* Don't modify userspace memory if we're returning an error */ if (numevents > 0) { /* Translate the 64-bit structures back into the 32-bit structures */ for (evt_idx = 0; evt_idx < numevents; evt_idx++) { __put_user(events64[evt_idx].events, &events[evt_idx].events); __put_user((u32)events64[evt_idx].data, &events[evt_idx].data[0]); __put_user((u32)(events64[evt_idx].data >> 32), &events[evt_idx].data[1]); } } if (do_free_pages) free_pages((unsigned long) events64, get_order(size)); else kfree(events64); return numevents; } /* * Get a yet unused TLS descriptor index. */ static int get_free_idx (void) { struct thread_struct *t = ¤t->thread; int idx; for (idx = 0; idx < GDT_ENTRY_TLS_ENTRIES; idx++) if (desc_empty(t->tls_array + idx)) return idx + GDT_ENTRY_TLS_MIN; return -ESRCH; } /* * Set a given TLS descriptor: */ asmlinkage int sys32_set_thread_area (struct ia32_user_desc *u_info) { struct thread_struct *t = ¤t->thread; struct ia32_user_desc info; struct desc_struct *desc; int cpu, idx; if (copy_from_user(&info, u_info, sizeof(info))) return -EFAULT; idx = info.entry_number; /* * index -1 means the kernel should try to find and allocate an empty descriptor: */ if (idx == -1) { idx = get_free_idx(); if (idx < 0) return idx; if (put_user(idx, &u_info->entry_number)) return -EFAULT; } if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) return -EINVAL; desc = t->tls_array + idx - GDT_ENTRY_TLS_MIN; cpu = smp_processor_id(); if (LDT_empty(&info)) { desc->a = 0; desc->b = 0; } else { desc->a = LDT_entry_a(&info); desc->b = LDT_entry_b(&info); } load_TLS(t, cpu); return 0; } /* * Get the current Thread-Local Storage area: */ #define GET_BASE(desc) ( \ (((desc)->a >> 16) & 0x0000ffff) | \ (((desc)->b << 16) & 0x00ff0000) | \ ( (desc)->b & 0xff000000) ) #define GET_LIMIT(desc) ( \ ((desc)->a & 0x0ffff) | \ ((desc)->b & 0xf0000) ) #define GET_32BIT(desc) (((desc)->b >> 23) & 1) #define GET_CONTENTS(desc) (((desc)->b >> 10) & 3) #define GET_WRITABLE(desc) (((desc)->b >> 9) & 1) #define GET_LIMIT_PAGES(desc) (((desc)->b >> 23) & 1) #define GET_PRESENT(desc) (((desc)->b >> 15) & 1) #define GET_USEABLE(desc) (((desc)->b >> 20) & 1) asmlinkage int sys32_get_thread_area (struct ia32_user_desc *u_info) { struct ia32_user_desc info; struct desc_struct *desc; int idx; if (get_user(idx, &u_info->entry_number)) return -EFAULT; if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX) return -EINVAL; desc = current->thread.tls_array + idx - GDT_ENTRY_TLS_MIN; info.entry_number = idx; info.base_addr = GET_BASE(desc); info.limit = GET_LIMIT(desc); info.seg_32bit = GET_32BIT(desc); info.contents = GET_CONTENTS(desc); info.read_exec_only = !GET_WRITABLE(desc); info.limit_in_pages = GET_LIMIT_PAGES(desc); info.seg_not_present = !GET_PRESENT(desc); info.useable = GET_USEABLE(desc); if (copy_to_user(u_info, &info, sizeof(info))) return -EFAULT; return 0; } extern asmlinkage long sys_timer_create(clockid_t which_clock, struct sigevent *timer_event_spec, timer_t * created_timer_id); asmlinkage long sys32_timer_create(u32 clock, struct sigevent32 *se32, timer_t *timer_id) { struct sigevent se; mm_segment_t oldfs; timer_t t; long err; if (se32 == NULL) return sys_timer_create(clock, NULL, timer_id); memset(&se, 0, sizeof(struct sigevent)); if (get_user(se.sigev_value.sival_int, &se32->sigev_value.sival_int) || __get_user(se.sigev_signo, &se32->sigev_signo) || __get_user(se.sigev_notify, &se32->sigev_notify) || __copy_from_user(&se._sigev_un._pad, &se32->_sigev_un._pad, sizeof(se._sigev_un._pad))) return -EFAULT; if (!access_ok(VERIFY_WRITE,timer_id,sizeof(timer_t))) return -EFAULT; oldfs = get_fs(); set_fs(KERNEL_DS); err = sys_timer_create(clock, &se, &t); set_fs(oldfs); if (!err) err = __put_user (t, timer_id); return err; } long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high, __u32 len_low, __u32 len_high, int advice) { return sys_fadvise64_64(fd, (((u64)offset_high)<<32) | offset_low, (((u64)len_high)<<32) | len_low, advice); } #ifdef NOTYET /* UNTESTED FOR IA64 FROM HERE DOWN */ asmlinkage long sys32_setreuid(compat_uid_t ruid, compat_uid_t euid) { uid_t sruid, seuid; sruid = (ruid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)ruid); seuid = (euid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)euid); return sys_setreuid(sruid, seuid); } asmlinkage long sys32_setresuid(compat_uid_t ruid, compat_uid_t euid, compat_uid_t suid) { uid_t sruid, seuid, ssuid; sruid = (ruid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)ruid); seuid = (euid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)euid); ssuid = (suid == (compat_uid_t)-1) ? ((uid_t)-1) : ((uid_t)suid); return sys_setresuid(sruid, seuid, ssuid); } asmlinkage long sys32_setregid(compat_gid_t rgid, compat_gid_t egid) { gid_t srgid, segid; srgid = (rgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)rgid); segid = (egid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)egid); return sys_setregid(srgid, segid); } asmlinkage long sys32_setresgid(compat_gid_t rgid, compat_gid_t egid, compat_gid_t sgid) { gid_t srgid, segid, ssgid; srgid = (rgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)rgid); segid = (egid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)egid); ssgid = (sgid == (compat_gid_t)-1) ? ((gid_t)-1) : ((gid_t)sgid); return sys_setresgid(srgid, segid, ssgid); } /* Stuff for NFS server syscalls... */ struct nfsctl_svc32 { u16 svc32_port; s32 svc32_nthreads; }; struct nfsctl_client32 { s8 cl32_ident[NFSCLNT_IDMAX+1]; s32 cl32_naddr; struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX]; s32 cl32_fhkeytype; s32 cl32_fhkeylen; u8 cl32_fhkey[NFSCLNT_KEYMAX]; }; struct nfsctl_export32 { s8 ex32_client[NFSCLNT_IDMAX+1]; s8 ex32_path[NFS_MAXPATHLEN+1]; compat_dev_t ex32_dev; compat_ino_t ex32_ino; s32 ex32_flags; compat_uid_t ex32_anon_uid; compat_gid_t ex32_anon_gid; }; struct nfsctl_arg32 { s32 ca32_version; /* safeguard */ union { struct nfsctl_svc32 u32_svc; struct nfsctl_client32 u32_client; struct nfsctl_export32 u32_export; u32 u32_debug; } u; #define ca32_svc u.u32_svc #define ca32_client u.u32_client #define ca32_export u.u32_export #define ca32_debug u.u32_debug }; union nfsctl_res32 { struct knfs_fh cr32_getfh; u32 cr32_debug; }; static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) { int err; err = __get_user(karg->ca_version, &arg32->ca32_version); err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port); err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads); return err; } static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) { int err; err = __get_user(karg->ca_version, &arg32->ca32_version); err |= copy_from_user(&karg->ca_client.cl_ident[0], &arg32->ca32_client.cl32_ident[0], NFSCLNT_IDMAX); err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr); err |= copy_from_user(&karg->ca_client.cl_addrlist[0], &arg32->ca32_client.cl32_addrlist[0], (sizeof(struct in_addr) * NFSCLNT_ADDRMAX)); err |= __get_user(karg->ca_client.cl_fhkeytype, &arg32->ca32_client.cl32_fhkeytype); err |= __get_user(karg->ca_client.cl_fhkeylen, &arg32->ca32_client.cl32_fhkeylen); err |= copy_from_user(&karg->ca_client.cl_fhkey[0], &arg32->ca32_client.cl32_fhkey[0], NFSCLNT_KEYMAX); return err; } static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32) { int err; err = __get_user(karg->ca_version, &arg32->ca32_version); err |= copy_from_user(&karg->ca_export.ex_client[0], &arg32->ca32_export.ex32_client[0], NFSCLNT_IDMAX); err |= copy_from_user(&karg->ca_export.ex_path[0], &arg32->ca32_export.ex32_path[0], NFS_MAXPATHLEN); err |= __get_user(karg->ca_export.ex_dev, &arg32->ca32_export.ex32_dev); err |= __get_user(karg->ca_export.ex_ino, &arg32->ca32_export.ex32_ino); err |= __get_user(karg->ca_export.ex_flags, &arg32->ca32_export.ex32_flags); err |= __get_user(karg->ca_export.ex_anon_uid, &arg32->ca32_export.ex32_anon_uid); err |= __get_user(karg->ca_export.ex_anon_gid, &arg32->ca32_export.ex32_anon_gid); return err; } static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32) { int err; err = copy_to_user(&res32->cr32_getfh, &kres->cr_getfh, sizeof(res32->cr32_getfh)); err |= __put_user(kres->cr_debug, &res32->cr32_debug); return err; } int asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32) { struct nfsctl_arg *karg = NULL; union nfsctl_res *kres = NULL; mm_segment_t oldfs; int err; karg = kmalloc(sizeof(*karg), GFP_USER); if(!karg) return -ENOMEM; if(res32) { kres = kmalloc(sizeof(*kres), GFP_USER); if(!kres) { kfree(karg); return -ENOMEM; } } switch(cmd) { case NFSCTL_SVC: err = nfs_svc32_trans(karg, arg32); break; case NFSCTL_ADDCLIENT: err = nfs_clnt32_trans(karg, arg32); break; case NFSCTL_DELCLIENT: err = nfs_clnt32_trans(karg, arg32); break; case NFSCTL_EXPORT: err = nfs_exp32_trans(karg, arg32); break; default: err = -EINVAL; break; } if(err) goto done; oldfs = get_fs(); set_fs(KERNEL_DS); err = sys_nfsservctl(cmd, karg, kres); set_fs(oldfs); if(!err && cmd == NFSCTL_GETFS) err = nfs_getfh32_res_trans(kres, res32); done: if(karg) kfree(karg); if(kres) kfree(kres); return err; } /* Handle adjtimex compatibility. */ struct timex32 { u32 modes; s32 offset, freq, maxerror, esterror; s32 status, constant, precision, tolerance; struct compat_timeval time; s32 tick; s32 ppsfreq, jitter, shift, stabil; s32 jitcnt, calcnt, errcnt, stbcnt; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; s32 :32; }; extern int do_adjtimex(struct timex *); asmlinkage long sys32_adjtimex(struct timex32 *utp) { struct timex txc; int ret; memset(&txc, 0, sizeof(struct timex)); if(get_user(txc.modes, &utp->modes) || __get_user(txc.offset, &utp->offset) || __get_user(txc.freq, &utp->freq) || __get_user(txc.maxerror, &utp->maxerror) || __get_user(txc.esterror, &utp->esterror) || __get_user(txc.status, &utp->status) || __get_user(txc.constant, &utp->constant) || __get_user(txc.precision, &utp->precision) || __get_user(txc.tolerance, &utp->tolerance) || __get_user(txc.time.tv_sec, &utp->time.tv_sec) || __get_user(txc.time.tv_usec, &utp->time.tv_usec) || __get_user(txc.tick, &utp->tick) || __get_user(txc.ppsfreq, &utp->ppsfreq) || __get_user(txc.jitter, &utp->jitter) || __get_user(txc.shift, &utp->shift) || __get_user(txc.stabil, &utp->stabil) || __get_user(txc.jitcnt, &utp->jitcnt) || __get_user(txc.calcnt, &utp->calcnt) || __get_user(txc.errcnt, &utp->errcnt) || __get_user(txc.stbcnt, &utp->stbcnt)) return -EFAULT; ret = do_adjtimex(&txc); if(put_user(txc.modes, &utp->modes) || __put_user(txc.offset, &utp->offset) || __put_user(txc.freq, &utp->freq) || __put_user(txc.maxerror, &utp->maxerror) || __put_user(txc.esterror, &utp->esterror) || __put_user(txc.status, &utp->status) || __put_user(txc.constant, &utp->constant) || __put_user(txc.precision, &utp->precision) || __put_user(txc.tolerance, &utp->tolerance) || __put_user(txc.time.tv_sec, &utp->time.tv_sec) || __put_user(txc.time.tv_usec, &utp->time.tv_usec) || __put_user(txc.tick, &utp->tick) || __put_user(txc.ppsfreq, &utp->ppsfreq) || __put_user(txc.jitter, &utp->jitter) || __put_user(txc.shift, &utp->shift) || __put_user(txc.stabil, &utp->stabil) || __put_user(txc.jitcnt, &utp->jitcnt) || __put_user(txc.calcnt, &utp->calcnt) || __put_user(txc.errcnt, &utp->errcnt) || __put_user(txc.stbcnt, &utp->stbcnt)) ret = -EFAULT; return ret; } #endif /* NOTYET */