Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 3 | * sys_sparc32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * Copyright (C) 2000 VA Linux Co |
| 6 | * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 7 | * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> |
| 8 | * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) |
| 9 | * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * Copyright (C) 2000 Hewlett-Packard Co. |
| 11 | * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 12 | * Copyright (C) 2000,2001,2002 Andi Kleen, SuSE Labs (x86-64 port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * These routines maintain argument size conversion between 32bit and 64bit |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 15 | * environment. In 2.5 most of this should be moved to a generic directory. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
| 17 | * This file assumes that there is a hole at the end of user address space. |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 18 | * |
| 19 | * Some of the functions are LE specific currently. These are |
| 20 | * hopefully all marked. This should be fixed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | */ |
| 22 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | #include <linux/kernel.h> |
| 24 | #include <linux/sched.h> |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 25 | #include <linux/fs.h> |
| 26 | #include <linux/file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/signal.h> |
| 28 | #include <linux/syscalls.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/times.h> |
| 30 | #include <linux/utsname.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/smp_lock.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | #include <linux/uio.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #include <linux/poll.h> |
| 35 | #include <linux/personality.h> |
| 36 | #include <linux/stat.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include <linux/rwsem.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include <linux/compat.h> |
| 39 | #include <linux/vfs.h> |
| 40 | #include <linux/ptrace.h> |
| 41 | #include <linux/highuid.h> |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 42 | #include <linux/sysctl.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <asm/mman.h> |
| 44 | #include <asm/types.h> |
| 45 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #include <asm/atomic.h> |
Arnaldo Carvalho de Melo | 28d2312 | 2008-02-07 21:03:04 -0200 | [diff] [blame] | 47 | #include <asm/vgtod.h> |
Jaswinder Singh Rajput | 2f06de0 | 2008-12-27 21:37:10 +0530 | [diff] [blame] | 48 | #include <asm/sys_ia32.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
| 50 | #define AA(__x) ((unsigned long)(__x)) |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 53 | asmlinkage long sys32_truncate64(char __user *filename, |
| 54 | unsigned long offset_low, |
| 55 | unsigned long offset_high) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | { |
| 57 | return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low); |
| 58 | } |
| 59 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 60 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low, |
| 61 | unsigned long offset_high) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | { |
| 63 | return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); |
| 64 | } |
| 65 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 66 | /* |
| 67 | * Another set for IA32/LFS -- x86_64 struct stat is different due to |
| 68 | * support for 64bit inode numbers. |
| 69 | */ |
| 70 | static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | { |
| 72 | typeof(ubuf->st_uid) uid = 0; |
| 73 | typeof(ubuf->st_gid) gid = 0; |
| 74 | SET_UID(uid, stat->uid); |
| 75 | SET_GID(gid, stat->gid); |
| 76 | if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || |
| 77 | __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) || |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 78 | __put_user(stat->ino, &ubuf->__st_ino) || |
| 79 | __put_user(stat->ino, &ubuf->st_ino) || |
| 80 | __put_user(stat->mode, &ubuf->st_mode) || |
| 81 | __put_user(stat->nlink, &ubuf->st_nlink) || |
| 82 | __put_user(uid, &ubuf->st_uid) || |
| 83 | __put_user(gid, &ubuf->st_gid) || |
| 84 | __put_user(huge_encode_dev(stat->rdev), &ubuf->st_rdev) || |
| 85 | __put_user(stat->size, &ubuf->st_size) || |
| 86 | __put_user(stat->atime.tv_sec, &ubuf->st_atime) || |
| 87 | __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec) || |
| 88 | __put_user(stat->mtime.tv_sec, &ubuf->st_mtime) || |
| 89 | __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) || |
| 90 | __put_user(stat->ctime.tv_sec, &ubuf->st_ctime) || |
| 91 | __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) || |
| 92 | __put_user(stat->blksize, &ubuf->st_blksize) || |
| 93 | __put_user(stat->blocks, &ubuf->st_blocks)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | return -EFAULT; |
| 95 | return 0; |
| 96 | } |
| 97 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 98 | asmlinkage long sys32_stat64(char __user *filename, |
| 99 | struct stat64 __user *statbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | { |
| 101 | struct kstat stat; |
| 102 | int ret = vfs_stat(filename, &stat); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | if (!ret) |
| 105 | ret = cp_stat64(statbuf, &stat); |
| 106 | return ret; |
| 107 | } |
| 108 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 109 | asmlinkage long sys32_lstat64(char __user *filename, |
| 110 | struct stat64 __user *statbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { |
| 112 | struct kstat stat; |
| 113 | int ret = vfs_lstat(filename, &stat); |
| 114 | if (!ret) |
| 115 | ret = cp_stat64(statbuf, &stat); |
| 116 | return ret; |
| 117 | } |
| 118 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 119 | asmlinkage long sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
| 121 | struct kstat stat; |
| 122 | int ret = vfs_fstat(fd, &stat); |
| 123 | if (!ret) |
| 124 | ret = cp_stat64(statbuf, &stat); |
| 125 | return ret; |
| 126 | } |
| 127 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 128 | asmlinkage long sys32_fstatat(unsigned int dfd, char __user *filename, |
| 129 | struct stat64 __user *statbuf, int flag) |
Ulrich Drepper | cff2b76 | 2006-02-11 17:55:47 -0800 | [diff] [blame] | 130 | { |
| 131 | struct kstat stat; |
| 132 | int error = -EINVAL; |
| 133 | |
| 134 | if ((flag & ~AT_SYMLINK_NOFOLLOW) != 0) |
| 135 | goto out; |
| 136 | |
| 137 | if (flag & AT_SYMLINK_NOFOLLOW) |
| 138 | error = vfs_lstat_fd(dfd, filename, &stat); |
| 139 | else |
| 140 | error = vfs_stat_fd(dfd, filename, &stat); |
| 141 | |
| 142 | if (!error) |
| 143 | error = cp_stat64(statbuf, &stat); |
| 144 | |
| 145 | out: |
| 146 | return error; |
| 147 | } |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | /* |
| 150 | * Linux/i386 didn't use to be able to handle more than |
| 151 | * 4 system call parameters, so these system calls used a memory |
| 152 | * block for parameter passing.. |
| 153 | */ |
| 154 | |
| 155 | struct mmap_arg_struct { |
| 156 | unsigned int addr; |
| 157 | unsigned int len; |
| 158 | unsigned int prot; |
| 159 | unsigned int flags; |
| 160 | unsigned int fd; |
| 161 | unsigned int offset; |
| 162 | }; |
| 163 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 164 | asmlinkage long sys32_mmap(struct mmap_arg_struct __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | { |
| 166 | struct mmap_arg_struct a; |
| 167 | struct file *file = NULL; |
| 168 | unsigned long retval; |
| 169 | struct mm_struct *mm ; |
| 170 | |
| 171 | if (copy_from_user(&a, arg, sizeof(a))) |
| 172 | return -EFAULT; |
| 173 | |
| 174 | if (a.offset & ~PAGE_MASK) |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 175 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | if (!(a.flags & MAP_ANONYMOUS)) { |
| 178 | file = fget(a.fd); |
| 179 | if (!file) |
| 180 | return -EBADF; |
| 181 | } |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 182 | |
| 183 | mm = current->mm; |
| 184 | down_write(&mm->mmap_sem); |
| 185 | retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, |
| 186 | a.offset>>PAGE_SHIFT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | if (file) |
| 188 | fput(file); |
| 189 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 190 | up_write(&mm->mmap_sem); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | |
| 192 | return retval; |
| 193 | } |
| 194 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 195 | asmlinkage long sys32_mprotect(unsigned long start, size_t len, |
| 196 | unsigned long prot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 198 | return sys_mprotect(start, len, prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | } |
| 200 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 201 | asmlinkage long sys32_pipe(int __user *fd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | { |
| 203 | int retval; |
| 204 | int fds[2]; |
| 205 | |
Ulrich Drepper | ed8cae8 | 2008-07-23 21:29:30 -0700 | [diff] [blame] | 206 | retval = do_pipe_flags(fds, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | if (retval) |
| 208 | goto out; |
| 209 | if (copy_to_user(fd, fds, sizeof(fds))) |
| 210 | retval = -EFAULT; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 211 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | return retval; |
| 213 | } |
| 214 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 215 | asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act, |
| 216 | struct sigaction32 __user *oact, |
| 217 | unsigned int sigsetsize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | { |
| 219 | struct k_sigaction new_ka, old_ka; |
| 220 | int ret; |
| 221 | compat_sigset_t set32; |
| 222 | |
| 223 | /* XXX: Don't preclude handling different sized sigset_t's. */ |
| 224 | if (sigsetsize != sizeof(compat_sigset_t)) |
| 225 | return -EINVAL; |
| 226 | |
| 227 | if (act) { |
| 228 | compat_uptr_t handler, restorer; |
| 229 | |
| 230 | if (!access_ok(VERIFY_READ, act, sizeof(*act)) || |
| 231 | __get_user(handler, &act->sa_handler) || |
| 232 | __get_user(new_ka.sa.sa_flags, &act->sa_flags) || |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 233 | __get_user(restorer, &act->sa_restorer) || |
| 234 | __copy_from_user(&set32, &act->sa_mask, |
| 235 | sizeof(compat_sigset_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | return -EFAULT; |
| 237 | new_ka.sa.sa_handler = compat_ptr(handler); |
| 238 | new_ka.sa.sa_restorer = compat_ptr(restorer); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 239 | |
| 240 | /* |
| 241 | * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= |
| 242 | * than _NSIG_WORDS << 1 |
| 243 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | switch (_NSIG_WORDS) { |
| 245 | case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] |
| 246 | | (((long)set32.sig[7]) << 32); |
| 247 | case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] |
| 248 | | (((long)set32.sig[5]) << 32); |
| 249 | case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] |
| 250 | | (((long)set32.sig[3]) << 32); |
| 251 | case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] |
| 252 | | (((long)set32.sig[1]) << 32); |
| 253 | } |
| 254 | } |
| 255 | |
| 256 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
| 257 | |
| 258 | if (!ret && oact) { |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 259 | /* |
| 260 | * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= |
| 261 | * than _NSIG_WORDS << 1 |
| 262 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | switch (_NSIG_WORDS) { |
| 264 | case 4: |
| 265 | set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); |
| 266 | set32.sig[6] = old_ka.sa.sa_mask.sig[3]; |
| 267 | case 3: |
| 268 | set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); |
| 269 | set32.sig[4] = old_ka.sa.sa_mask.sig[2]; |
| 270 | case 2: |
| 271 | set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); |
| 272 | set32.sig[2] = old_ka.sa.sa_mask.sig[1]; |
| 273 | case 1: |
| 274 | set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); |
| 275 | set32.sig[0] = old_ka.sa.sa_mask.sig[0]; |
| 276 | } |
| 277 | if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 278 | __put_user(ptr_to_compat(old_ka.sa.sa_handler), |
| 279 | &oact->sa_handler) || |
| 280 | __put_user(ptr_to_compat(old_ka.sa.sa_restorer), |
| 281 | &oact->sa_restorer) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 283 | __copy_to_user(&oact->sa_mask, &set32, |
| 284 | sizeof(compat_sigset_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | return -EFAULT; |
| 286 | } |
| 287 | |
| 288 | return ret; |
| 289 | } |
| 290 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 291 | asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act, |
| 292 | struct old_sigaction32 __user *oact) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | { |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 294 | struct k_sigaction new_ka, old_ka; |
| 295 | int ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 297 | if (act) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | compat_old_sigset_t mask; |
| 299 | compat_uptr_t handler, restorer; |
| 300 | |
| 301 | if (!access_ok(VERIFY_READ, act, sizeof(*act)) || |
| 302 | __get_user(handler, &act->sa_handler) || |
| 303 | __get_user(new_ka.sa.sa_flags, &act->sa_flags) || |
| 304 | __get_user(restorer, &act->sa_restorer) || |
| 305 | __get_user(mask, &act->sa_mask)) |
| 306 | return -EFAULT; |
| 307 | |
| 308 | new_ka.sa.sa_handler = compat_ptr(handler); |
| 309 | new_ka.sa.sa_restorer = compat_ptr(restorer); |
| 310 | |
| 311 | siginitset(&new_ka.sa.sa_mask, mask); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 312 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 314 | ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
| 316 | if (!ret && oact) { |
| 317 | if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 318 | __put_user(ptr_to_compat(old_ka.sa.sa_handler), |
| 319 | &oact->sa_handler) || |
| 320 | __put_user(ptr_to_compat(old_ka.sa.sa_restorer), |
| 321 | &oact->sa_restorer) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || |
| 323 | __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) |
| 324 | return -EFAULT; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 325 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
| 327 | return ret; |
| 328 | } |
| 329 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 330 | asmlinkage long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, |
| 331 | compat_sigset_t __user *oset, |
| 332 | unsigned int sigsetsize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | { |
| 334 | sigset_t s; |
| 335 | compat_sigset_t s32; |
| 336 | int ret; |
| 337 | mm_segment_t old_fs = get_fs(); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 338 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | if (set) { |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 340 | if (copy_from_user(&s32, set, sizeof(compat_sigset_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | return -EFAULT; |
| 342 | switch (_NSIG_WORDS) { |
| 343 | case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32); |
| 344 | case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32); |
| 345 | case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32); |
| 346 | case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32); |
| 347 | } |
| 348 | } |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 349 | set_fs(KERNEL_DS); |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 350 | ret = sys_rt_sigprocmask(how, |
| 351 | set ? (sigset_t __user *)&s : NULL, |
| 352 | oset ? (sigset_t __user *)&s : NULL, |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 353 | sigsetsize); |
| 354 | set_fs(old_fs); |
| 355 | if (ret) |
| 356 | return ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | if (oset) { |
| 358 | switch (_NSIG_WORDS) { |
| 359 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; |
| 360 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; |
| 361 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; |
| 362 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; |
| 363 | } |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 364 | if (copy_to_user(oset, &s32, sizeof(compat_sigset_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | return -EFAULT; |
| 366 | } |
| 367 | return 0; |
| 368 | } |
| 369 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 370 | asmlinkage long sys32_alarm(unsigned int seconds) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | { |
Thomas Gleixner | c08b8a4 | 2006-03-25 03:06:33 -0800 | [diff] [blame] | 372 | return alarm_setitimer(seconds); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | } |
| 374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | struct sel_arg_struct { |
| 376 | unsigned int n; |
| 377 | unsigned int inp; |
| 378 | unsigned int outp; |
| 379 | unsigned int exp; |
| 380 | unsigned int tvp; |
| 381 | }; |
| 382 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 383 | asmlinkage long sys32_old_select(struct sel_arg_struct __user *arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
| 385 | struct sel_arg_struct a; |
| 386 | |
| 387 | if (copy_from_user(&a, arg, sizeof(a))) |
| 388 | return -EFAULT; |
| 389 | return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp), |
| 390 | compat_ptr(a.exp), compat_ptr(a.tvp)); |
| 391 | } |
| 392 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 393 | asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, |
| 394 | int options) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | { |
| 396 | return compat_sys_wait4(pid, stat_addr, options, NULL); |
| 397 | } |
| 398 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | /* 32-bit timeval and related flotsam. */ |
| 400 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 401 | asmlinkage long sys32_sysfs(int option, u32 arg1, u32 arg2) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 402 | { |
| 403 | return sys_sysfs(option, arg1, arg2); |
| 404 | } |
| 405 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 406 | asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, |
| 407 | struct compat_timespec __user *interval) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | { |
| 409 | struct timespec t; |
| 410 | int ret; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 411 | mm_segment_t old_fs = get_fs(); |
| 412 | |
| 413 | set_fs(KERNEL_DS); |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 414 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 415 | set_fs(old_fs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | if (put_compat_timespec(&t, interval)) |
| 417 | return -EFAULT; |
| 418 | return ret; |
| 419 | } |
| 420 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 421 | asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, |
| 422 | compat_size_t sigsetsize) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | { |
| 424 | sigset_t s; |
| 425 | compat_sigset_t s32; |
| 426 | int ret; |
| 427 | mm_segment_t old_fs = get_fs(); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 428 | |
| 429 | set_fs(KERNEL_DS); |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 430 | ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 431 | set_fs(old_fs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | if (!ret) { |
| 433 | switch (_NSIG_WORDS) { |
| 434 | case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; |
| 435 | case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; |
| 436 | case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; |
| 437 | case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; |
| 438 | } |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 439 | if (copy_to_user(set, &s32, sizeof(compat_sigset_t))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | return -EFAULT; |
| 441 | } |
| 442 | return ret; |
| 443 | } |
| 444 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 445 | asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, |
| 446 | compat_siginfo_t __user *uinfo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | { |
| 448 | siginfo_t info; |
| 449 | int ret; |
| 450 | mm_segment_t old_fs = get_fs(); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 451 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | if (copy_siginfo_from_user32(&info, uinfo)) |
| 453 | return -EFAULT; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 454 | set_fs(KERNEL_DS); |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 455 | ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 456 | set_fs(old_fs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | return ret; |
| 458 | } |
| 459 | |
Eric W. Biederman | b89a817 | 2006-09-27 01:51:04 -0700 | [diff] [blame] | 460 | #ifdef CONFIG_SYSCTL_SYSCALL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | struct sysctl_ia32 { |
| 462 | unsigned int name; |
| 463 | int nlen; |
| 464 | unsigned int oldval; |
| 465 | unsigned int oldlenp; |
| 466 | unsigned int newval; |
| 467 | unsigned int newlen; |
| 468 | unsigned int __unused[4]; |
| 469 | }; |
| 470 | |
| 471 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 472 | asmlinkage long sys32_sysctl(struct sysctl_ia32 __user *args32) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | { |
| 474 | struct sysctl_ia32 a32; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 475 | mm_segment_t old_fs = get_fs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | void __user *oldvalp, *newvalp; |
| 477 | size_t oldlen; |
| 478 | int __user *namep; |
| 479 | long ret; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 481 | if (copy_from_user(&a32, args32, sizeof(a32))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | return -EFAULT; |
| 483 | |
| 484 | /* |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 485 | * We need to pre-validate these because we have to disable |
| 486 | * address checking before calling do_sysctl() because of |
| 487 | * OLDLEN but we can't run the risk of the user specifying bad |
| 488 | * addresses here. Well, since we're dealing with 32 bit |
| 489 | * addresses, we KNOW that access_ok() will always succeed, so |
| 490 | * this is an expensive NOP, but so what... |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | */ |
| 492 | namep = compat_ptr(a32.name); |
| 493 | oldvalp = compat_ptr(a32.oldval); |
| 494 | newvalp = compat_ptr(a32.newval); |
| 495 | |
| 496 | if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) |
| 497 | || !access_ok(VERIFY_WRITE, namep, 0) |
| 498 | || !access_ok(VERIFY_WRITE, oldvalp, 0) |
| 499 | || !access_ok(VERIFY_WRITE, newvalp, 0)) |
| 500 | return -EFAULT; |
| 501 | |
| 502 | set_fs(KERNEL_DS); |
| 503 | lock_kernel(); |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 504 | ret = do_sysctl(namep, a32.nlen, oldvalp, (size_t __user *)&oldlen, |
| 505 | newvalp, (size_t) a32.newlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | unlock_kernel(); |
| 507 | set_fs(old_fs); |
| 508 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 509 | if (oldvalp && put_user(oldlen, (int __user *)compat_ptr(a32.oldlenp))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | return -EFAULT; |
| 511 | |
| 512 | return ret; |
| 513 | } |
| 514 | #endif |
| 515 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 516 | /* warning: next two assume little endian */ |
| 517 | asmlinkage long sys32_pread(unsigned int fd, char __user *ubuf, u32 count, |
| 518 | u32 poslo, u32 poshi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | { |
| 520 | return sys_pread64(fd, ubuf, count, |
| 521 | ((loff_t)AA(poshi) << 32) | AA(poslo)); |
| 522 | } |
| 523 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 524 | asmlinkage long sys32_pwrite(unsigned int fd, char __user *ubuf, u32 count, |
| 525 | u32 poslo, u32 poshi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | { |
| 527 | return sys_pwrite64(fd, ubuf, count, |
| 528 | ((loff_t)AA(poshi) << 32) | AA(poslo)); |
| 529 | } |
| 530 | |
| 531 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 532 | asmlinkage long sys32_personality(unsigned long personality) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | { |
| 534 | int ret; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 535 | |
| 536 | if (personality(current->personality) == PER_LINUX32 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | personality == PER_LINUX) |
| 538 | personality = PER_LINUX32; |
| 539 | ret = sys_personality(personality); |
| 540 | if (ret == PER_LINUX32) |
| 541 | ret = PER_LINUX; |
| 542 | return ret; |
| 543 | } |
| 544 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 545 | asmlinkage long sys32_sendfile(int out_fd, int in_fd, |
| 546 | compat_off_t __user *offset, s32 count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | { |
| 548 | mm_segment_t old_fs = get_fs(); |
| 549 | int ret; |
| 550 | off_t of; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 551 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | if (offset && get_user(of, offset)) |
| 553 | return -EFAULT; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 554 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | set_fs(KERNEL_DS); |
Andi Kleen | ddb15ec | 2006-09-26 10:52:33 +0200 | [diff] [blame] | 556 | ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, |
| 557 | count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | set_fs(old_fs); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 559 | |
Tsuneo.Yoshioka@f-secure.com | 83b942b | 2005-09-12 18:49:24 +0200 | [diff] [blame] | 560 | if (offset && put_user(of, offset)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | return ret; |
| 563 | } |
| 564 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len, |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 566 | unsigned long prot, unsigned long flags, |
| 567 | unsigned long fd, unsigned long pgoff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | { |
| 569 | struct mm_struct *mm = current->mm; |
| 570 | unsigned long error; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 571 | struct file *file = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 572 | |
| 573 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); |
| 574 | if (!(flags & MAP_ANONYMOUS)) { |
| 575 | file = fget(fd); |
| 576 | if (!file) |
| 577 | return -EBADF; |
| 578 | } |
| 579 | |
| 580 | down_write(&mm->mmap_sem); |
| 581 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); |
| 582 | up_write(&mm->mmap_sem); |
| 583 | |
| 584 | if (file) |
| 585 | fput(file); |
| 586 | return error; |
| 587 | } |
| 588 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 589 | asmlinkage long sys32_olduname(struct oldold_utsname __user *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | { |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 591 | char *arch = "x86_64"; |
Andi Kleen | 26c13f2 | 2006-09-26 10:52:40 +0200 | [diff] [blame] | 592 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | |
| 594 | if (!name) |
| 595 | return -EFAULT; |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 596 | if (!access_ok(VERIFY_WRITE, name, sizeof(struct oldold_utsname))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | return -EFAULT; |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 598 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 599 | down_read(&uts_sem); |
| 600 | |
| 601 | err = __copy_to_user(&name->sysname, &utsname()->sysname, |
| 602 | __OLD_UTS_LEN); |
| 603 | err |= __put_user(0, name->sysname+__OLD_UTS_LEN); |
| 604 | err |= __copy_to_user(&name->nodename, &utsname()->nodename, |
| 605 | __OLD_UTS_LEN); |
| 606 | err |= __put_user(0, name->nodename+__OLD_UTS_LEN); |
| 607 | err |= __copy_to_user(&name->release, &utsname()->release, |
| 608 | __OLD_UTS_LEN); |
| 609 | err |= __put_user(0, name->release+__OLD_UTS_LEN); |
| 610 | err |= __copy_to_user(&name->version, &utsname()->version, |
| 611 | __OLD_UTS_LEN); |
| 612 | err |= __put_user(0, name->version+__OLD_UTS_LEN); |
| 613 | |
| 614 | if (personality(current->personality) == PER_LINUX32) |
| 615 | arch = "i686"; |
| 616 | |
| 617 | err |= __copy_to_user(&name->machine, arch, strlen(arch) + 1); |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 618 | |
| 619 | up_read(&uts_sem); |
| 620 | |
| 621 | err = err ? -EFAULT : 0; |
| 622 | |
| 623 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | } |
| 625 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 626 | long sys32_uname(struct old_utsname __user *name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | { |
| 628 | int err; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 629 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | if (!name) |
| 631 | return -EFAULT; |
| 632 | down_read(&uts_sem); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 633 | err = copy_to_user(name, utsname(), sizeof(*name)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 634 | up_read(&uts_sem); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 635 | if (personality(current->personality) == PER_LINUX32) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 636 | err |= copy_to_user(&name->machine, "i686", 5); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 637 | |
| 638 | return err ? -EFAULT : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | } |
| 640 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv, |
| 642 | compat_uptr_t __user *envp, struct pt_regs *regs) |
| 643 | { |
| 644 | long error; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 645 | char *filename; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | |
| 647 | filename = getname(name); |
| 648 | error = PTR_ERR(filename); |
| 649 | if (IS_ERR(filename)) |
| 650 | return error; |
| 651 | error = compat_do_execve(filename, argv, envp, regs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | putname(filename); |
| 653 | return error; |
| 654 | } |
| 655 | |
| 656 | asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, |
| 657 | struct pt_regs *regs) |
| 658 | { |
H. Peter Anvin | 65ea5b0 | 2008-01-30 13:30:56 +0100 | [diff] [blame] | 659 | void __user *parent_tid = (void __user *)regs->dx; |
| 660 | void __user *child_tid = (void __user *)regs->di; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 661 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | if (!newsp) |
H. Peter Anvin | 65ea5b0 | 2008-01-30 13:30:56 +0100 | [diff] [blame] | 663 | newsp = regs->sp; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 664 | return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | /* |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 668 | * Some system calls that need sign extended arguments. This could be |
| 669 | * done by a generic wrapper. |
| 670 | */ |
| 671 | long sys32_lseek(unsigned int fd, int offset, unsigned int whence) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | { |
| 673 | return sys_lseek(fd, offset, whence); |
| 674 | } |
| 675 | |
| 676 | long sys32_kill(int pid, int sig) |
| 677 | { |
| 678 | return sys_kill(pid, sig); |
| 679 | } |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 680 | |
| 681 | long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 682 | __u32 len_low, __u32 len_high, int advice) |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 683 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 684 | return sys_fadvise64_64(fd, |
| 685 | (((u64)offset_high)<<32) | offset_low, |
| 686 | (((u64)len_high)<<32) | len_low, |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 687 | advice); |
| 688 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | |
| 690 | long sys32_vm86_warning(void) |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 691 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 692 | struct task_struct *me = current; |
| 693 | static char lastcomm[sizeof(me->comm)]; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 694 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) { |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 696 | compat_printk(KERN_INFO |
| 697 | "%s: vm86 mode not supported on 64 bit kernel\n", |
| 698 | me->comm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 699 | strncpy(lastcomm, me->comm, sizeof(lastcomm)); |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 700 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | return -ENOSYS; |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 702 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | |
| 704 | long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 705 | char __user *buf, size_t len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
| 707 | return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); |
| 708 | } |
| 709 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 710 | asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, |
| 711 | size_t count) |
Andi Kleen | e412ac4 | 2007-06-20 12:23:30 +0200 | [diff] [blame] | 712 | { |
| 713 | return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); |
| 714 | } |
| 715 | |
| 716 | asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 717 | unsigned n_low, unsigned n_hi, int flags) |
Andi Kleen | e412ac4 | 2007-06-20 12:23:30 +0200 | [diff] [blame] | 718 | { |
| 719 | return sys_sync_file_range(fd, |
| 720 | ((u64)off_hi << 32) | off_low, |
| 721 | ((u64)n_hi << 32) | n_low, flags); |
| 722 | } |
| 723 | |
Thomas Gleixner | c202f29 | 2008-01-30 13:30:08 +0100 | [diff] [blame] | 724 | asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, |
| 725 | size_t len, int advice) |
Andi Kleen | e412ac4 | 2007-06-20 12:23:30 +0200 | [diff] [blame] | 726 | { |
| 727 | return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, |
| 728 | len, advice); |
| 729 | } |
Amit Arora | 97ac735 | 2007-07-17 21:42:44 -0400 | [diff] [blame] | 730 | |
| 731 | asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo, |
| 732 | unsigned offset_hi, unsigned len_lo, |
| 733 | unsigned len_hi) |
| 734 | { |
| 735 | return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, |
| 736 | ((u64)len_hi << 32) | len_lo); |
| 737 | } |