Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Conversion between 32-bit and 64-bit native system calls. |
| 3 | * |
| 4 | * Copyright (C) 2000 Silicon Graphics, Inc. |
| 5 | * Written by Ulf Carlsson (ulfc@engr.sgi.com) |
| 6 | * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com) |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/compiler.h> |
| 9 | #include <linux/mm.h> |
| 10 | #include <linux/errno.h> |
| 11 | #include <linux/file.h> |
| 12 | #include <linux/smp_lock.h> |
| 13 | #include <linux/highuid.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 14 | #include <linux/resource.h> |
| 15 | #include <linux/highmem.h> |
| 16 | #include <linux/time.h> |
| 17 | #include <linux/times.h> |
| 18 | #include <linux/poll.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/skbuff.h> |
| 21 | #include <linux/filter.h> |
| 22 | #include <linux/shm.h> |
| 23 | #include <linux/sem.h> |
| 24 | #include <linux/msg.h> |
| 25 | #include <linux/icmpv6.h> |
| 26 | #include <linux/syscalls.h> |
| 27 | #include <linux/sysctl.h> |
| 28 | #include <linux/utime.h> |
| 29 | #include <linux/utsname.h> |
| 30 | #include <linux/personality.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/dnotify.h> |
| 32 | #include <linux/module.h> |
| 33 | #include <linux/binfmts.h> |
| 34 | #include <linux/security.h> |
| 35 | #include <linux/compat.h> |
| 36 | #include <linux/vfs.h> |
Adrian Bunk | cba4fbb | 2007-10-16 23:29:24 -0700 | [diff] [blame] | 37 | #include <linux/ipc.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | #include <net/sock.h> |
| 40 | #include <net/scm.h> |
| 41 | |
Ralf Baechle | 431dc80 | 2007-02-13 00:05:11 +0000 | [diff] [blame] | 42 | #include <asm/compat-signal.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | #include <asm/sim.h> |
| 44 | #include <asm/uaccess.h> |
| 45 | #include <asm/mmu_context.h> |
| 46 | #include <asm/mman.h> |
| 47 | |
| 48 | /* Use this to get at 32-bit user passed pointers. */ |
| 49 | /* A() macro should be used for places where you e.g. |
| 50 | have some internal variable u32 and just want to get |
| 51 | rid of a compiler warning. AA() has to be used in |
| 52 | places where you want to convert a function argument |
| 53 | to 32bit pointer or when you e.g. access pt_regs |
| 54 | structure and want to consider 32bit registers only. |
| 55 | */ |
| 56 | #define A(__x) ((unsigned long)(__x)) |
| 57 | #define AA(__x) ((unsigned long)((int)__x)) |
| 58 | |
| 59 | #ifdef __MIPSEB__ |
Ralf Baechle | 21a151d | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 60 | #define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #endif |
| 62 | #ifdef __MIPSEL__ |
Ralf Baechle | 21a151d | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 63 | #define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | #endif |
| 65 | |
| 66 | /* |
| 67 | * Revalidate the inode. This is required for proper NFS attribute caching. |
| 68 | */ |
| 69 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 70 | int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | { |
| 72 | struct compat_stat tmp; |
| 73 | |
| 74 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) |
| 75 | return -EOVERFLOW; |
| 76 | |
| 77 | memset(&tmp, 0, sizeof(tmp)); |
| 78 | tmp.st_dev = new_encode_dev(stat->dev); |
| 79 | tmp.st_ino = stat->ino; |
David Howells | afefdbb | 2006-10-03 01:13:46 -0700 | [diff] [blame] | 80 | if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino) |
| 81 | return -EOVERFLOW; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | tmp.st_mode = stat->mode; |
| 83 | tmp.st_nlink = stat->nlink; |
| 84 | SET_UID(tmp.st_uid, stat->uid); |
| 85 | SET_GID(tmp.st_gid, stat->gid); |
| 86 | tmp.st_rdev = new_encode_dev(stat->rdev); |
| 87 | tmp.st_size = stat->size; |
| 88 | tmp.st_atime = stat->atime.tv_sec; |
| 89 | tmp.st_mtime = stat->mtime.tv_sec; |
| 90 | tmp.st_ctime = stat->ctime.tv_sec; |
| 91 | #ifdef STAT_HAVE_NSEC |
| 92 | tmp.st_atime_nsec = stat->atime.tv_nsec; |
| 93 | tmp.st_mtime_nsec = stat->mtime.tv_nsec; |
| 94 | tmp.st_ctime_nsec = stat->ctime.tv_nsec; |
| 95 | #endif |
| 96 | tmp.st_blocks = stat->blocks; |
| 97 | tmp.st_blksize = stat->blksize; |
Ralf Baechle | 21a151d | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 98 | return copy_to_user(statbuf, &tmp, sizeof(tmp)) ? -EFAULT : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | } |
| 100 | |
| 101 | asmlinkage unsigned long |
| 102 | sys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, |
| 103 | unsigned long flags, unsigned long fd, unsigned long pgoff) |
| 104 | { |
| 105 | struct file * file = NULL; |
| 106 | unsigned long error; |
| 107 | |
| 108 | error = -EINVAL; |
H. Peter Anvin | 947df17 | 2006-02-24 21:20:29 -0800 | [diff] [blame] | 109 | if (pgoff & (~PAGE_MASK >> 12)) |
| 110 | goto out; |
| 111 | pgoff >>= PAGE_SHIFT-12; |
| 112 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | if (!(flags & MAP_ANONYMOUS)) { |
| 114 | error = -EBADF; |
| 115 | file = fget(fd); |
| 116 | if (!file) |
| 117 | goto out; |
| 118 | } |
| 119 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); |
| 120 | |
| 121 | down_write(¤t->mm->mmap_sem); |
| 122 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); |
| 123 | up_write(¤t->mm->mmap_sem); |
| 124 | if (file) |
| 125 | fput(file); |
| 126 | |
| 127 | out: |
| 128 | return error; |
| 129 | } |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | /* |
| 132 | * sys_execve() executes a new program. |
| 133 | */ |
| 134 | asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) |
| 135 | { |
| 136 | int error; |
| 137 | char * filename; |
| 138 | |
| 139 | filename = getname(compat_ptr(regs.regs[4])); |
| 140 | error = PTR_ERR(filename); |
| 141 | if (IS_ERR(filename)) |
| 142 | goto out; |
| 143 | error = compat_do_execve(filename, compat_ptr(regs.regs[5]), |
| 144 | compat_ptr(regs.regs[6]), ®s); |
| 145 | putname(filename); |
| 146 | |
| 147 | out: |
| 148 | return error; |
| 149 | } |
| 150 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | #define RLIM_INFINITY32 0x7fffffff |
| 152 | #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) |
| 153 | |
| 154 | struct rlimit32 { |
| 155 | int rlim_cur; |
| 156 | int rlim_max; |
| 157 | }; |
| 158 | |
Ralf Baechle | d4e9cff | 2008-01-29 10:15:02 +0000 | [diff] [blame] | 159 | asmlinkage long sys32_truncate64(const char __user * path, |
| 160 | unsigned long __dummy, int a2, int a3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | { |
Ralf Baechle | d4e9cff | 2008-01-29 10:15:02 +0000 | [diff] [blame] | 162 | return sys_truncate(path, merge_64(a2, a3)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | } |
| 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, |
Ralf Baechle | d4e9cff | 2008-01-29 10:15:02 +0000 | [diff] [blame] | 166 | int a2, int a3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | { |
Ralf Baechle | d4e9cff | 2008-01-29 10:15:02 +0000 | [diff] [blame] | 168 | return sys_ftruncate(fd, merge_64(a2, a3)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | static inline long |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 172 | get_tv32(struct timeval *o, struct compat_timeval __user *i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | { |
| 174 | return (!access_ok(VERIFY_READ, i, sizeof(*i)) || |
| 175 | (__get_user(o->tv_sec, &i->tv_sec) | |
| 176 | __get_user(o->tv_usec, &i->tv_usec))); |
| 177 | } |
| 178 | |
| 179 | static inline long |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 180 | put_tv32(struct compat_timeval __user *o, struct timeval *i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | { |
| 182 | return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || |
| 183 | (__put_user(i->tv_sec, &o->tv_sec) | |
| 184 | __put_user(i->tv_usec, &o->tv_usec))); |
| 185 | } |
| 186 | |
| 187 | extern struct timezone sys_tz; |
| 188 | |
| 189 | asmlinkage int |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 190 | sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | { |
| 192 | if (tv) { |
| 193 | struct timeval ktv; |
| 194 | do_gettimeofday(&ktv); |
| 195 | if (put_tv32(tv, &ktv)) |
| 196 | return -EFAULT; |
| 197 | } |
| 198 | if (tz) { |
| 199 | if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) |
| 200 | return -EFAULT; |
| 201 | } |
| 202 | return 0; |
| 203 | } |
| 204 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 205 | static inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | { |
| 207 | long usec; |
| 208 | |
| 209 | if (!access_ok(VERIFY_READ, i, sizeof(*i))) |
| 210 | return -EFAULT; |
| 211 | if (__get_user(o->tv_sec, &i->tv_sec)) |
| 212 | return -EFAULT; |
| 213 | if (__get_user(usec, &i->tv_usec)) |
| 214 | return -EFAULT; |
| 215 | o->tv_nsec = usec * 1000; |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | asmlinkage int |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 220 | sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | { |
| 222 | struct timespec kts; |
| 223 | struct timezone ktz; |
| 224 | |
| 225 | if (tv) { |
| 226 | if (get_ts32(&kts, tv)) |
| 227 | return -EFAULT; |
| 228 | } |
| 229 | if (tz) { |
| 230 | if (copy_from_user(&ktz, tz, sizeof(ktz))) |
| 231 | return -EFAULT; |
| 232 | } |
| 233 | |
| 234 | return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); |
| 235 | } |
| 236 | |
| 237 | asmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 238 | unsigned int offset_low, loff_t __user * result, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | unsigned int origin) |
| 240 | { |
| 241 | return sys_llseek(fd, offset_high, offset_low, result, origin); |
| 242 | } |
| 243 | |
| 244 | /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + |
| 245 | lseek back to original location. They fail just like lseek does on |
| 246 | non-seekable files. */ |
| 247 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 248 | asmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | size_t count, u32 unused, u64 a4, u64 a5) |
| 250 | { |
Al Viro | 6ad0013 | 2006-04-26 07:28:09 +0100 | [diff] [blame] | 251 | return sys_pread64(fd, buf, count, merge_64(a4, a5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
| 253 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 254 | asmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | size_t count, u32 unused, u64 a4, u64 a5) |
| 256 | { |
Al Viro | 6ad0013 | 2006-04-26 07:28:09 +0100 | [diff] [blame] | 257 | return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | asmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 261 | struct compat_timespec __user *interval) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | { |
| 263 | struct timespec t; |
| 264 | int ret; |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 265 | mm_segment_t old_fs = get_fs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 267 | set_fs(KERNEL_DS); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 268 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 269 | set_fs(old_fs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | if (put_user (t.tv_sec, &interval->tv_sec) || |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 271 | __put_user(t.tv_nsec, &interval->tv_nsec)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | return -EFAULT; |
| 273 | return ret; |
| 274 | } |
| 275 | |
Ralf Baechle | 65f8ebe | 2007-03-10 18:22:25 +0000 | [diff] [blame] | 276 | #ifdef CONFIG_SYSVIPC |
| 277 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | asmlinkage long |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 279 | sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | { |
| 281 | int version, err; |
| 282 | |
| 283 | version = call >> 16; /* hack for backward compatibility */ |
| 284 | call &= 0xffff; |
| 285 | |
| 286 | switch (call) { |
| 287 | case SEMOP: |
| 288 | /* struct sembuf is the same on 32 and 64bit :)) */ |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 289 | err = sys_semtimedop(first, compat_ptr(ptr), second, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | break; |
| 291 | case SEMTIMEDOP: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 292 | err = compat_sys_semtimedop(first, compat_ptr(ptr), second, |
| 293 | compat_ptr(fifth)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | break; |
| 295 | case SEMGET: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 296 | err = sys_semget(first, second, third); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | break; |
| 298 | case SEMCTL: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 299 | err = compat_sys_semctl(first, second, third, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | case MSGSND: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 302 | err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | break; |
| 304 | case MSGRCV: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 305 | err = compat_sys_msgrcv(first, second, fifth, third, |
| 306 | version, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | break; |
| 308 | case MSGGET: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 309 | err = sys_msgget((key_t) first, second); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | break; |
| 311 | case MSGCTL: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 312 | err = compat_sys_msgctl(first, second, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | case SHMAT: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 315 | err = compat_sys_shmat(first, second, third, version, |
| 316 | compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | break; |
| 318 | case SHMDT: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 319 | err = sys_shmdt(compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | break; |
| 321 | case SHMGET: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 322 | err = sys_shmget(first, (unsigned)second, third); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | break; |
| 324 | case SHMCTL: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 325 | err = compat_sys_shmctl(first, second, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | break; |
| 327 | default: |
| 328 | err = -EINVAL; |
| 329 | break; |
| 330 | } |
| 331 | |
| 332 | return err; |
| 333 | } |
| 334 | |
Ralf Baechle | 65f8ebe | 2007-03-10 18:22:25 +0000 | [diff] [blame] | 335 | #else |
| 336 | |
| 337 | asmlinkage long |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 338 | sys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth) |
Ralf Baechle | 65f8ebe | 2007-03-10 18:22:25 +0000 | [diff] [blame] | 339 | { |
| 340 | return -ENOSYS; |
| 341 | } |
| 342 | |
| 343 | #endif /* CONFIG_SYSVIPC */ |
| 344 | |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 345 | #ifdef CONFIG_MIPS32_N32 |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 346 | asmlinkage long sysn32_semctl(int semid, int semnum, int cmd, u32 arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 348 | /* compat_sys_semctl expects a pointer to union semun */ |
| 349 | u32 __user *uptr = compat_alloc_user_space(sizeof(u32)); |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 350 | if (put_user(arg, uptr)) |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 351 | return -EFAULT; |
| 352 | return compat_sys_semctl(semid, semnum, cmd, uptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | } |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 354 | |
| 355 | asmlinkage long sysn32_msgsnd(int msqid, u32 msgp, unsigned msgsz, int msgflg) |
| 356 | { |
| 357 | return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp)); |
| 358 | } |
| 359 | |
| 360 | asmlinkage long sysn32_msgrcv(int msqid, u32 msgp, size_t msgsz, int msgtyp, |
| 361 | int msgflg) |
| 362 | { |
| 363 | return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64, |
| 364 | compat_ptr(msgp)); |
| 365 | } |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 366 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | |
| 368 | struct sysctl_args32 |
| 369 | { |
| 370 | compat_caddr_t name; |
| 371 | int nlen; |
| 372 | compat_caddr_t oldval; |
| 373 | compat_caddr_t oldlenp; |
| 374 | compat_caddr_t newval; |
| 375 | compat_size_t newlen; |
| 376 | unsigned int __unused[4]; |
| 377 | }; |
| 378 | |
Eric W. Biederman | b89a817 | 2006-09-27 01:51:04 -0700 | [diff] [blame] | 379 | #ifdef CONFIG_SYSCTL_SYSCALL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 381 | asmlinkage long sys32_sysctl(struct sysctl_args32 __user *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | { |
| 383 | struct sysctl_args32 tmp; |
| 384 | int error; |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 385 | size_t oldlen; |
| 386 | size_t __user *oldlenp = NULL; |
| 387 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | |
| 389 | if (copy_from_user(&tmp, args, sizeof(tmp))) |
| 390 | return -EFAULT; |
| 391 | |
| 392 | if (tmp.oldval && tmp.oldlenp) { |
| 393 | /* Duh, this is ugly and might not work if sysctl_args |
| 394 | is in read-only memory, but do_sysctl does indirectly |
| 395 | a lot of uaccess in both directions and we'd have to |
| 396 | basically copy the whole sysctl.c here, and |
| 397 | glibc's __sysctl uses rw memory for the structure |
| 398 | anyway. */ |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 399 | if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || |
| 400 | put_user(oldlen, (size_t __user *)addr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | return -EFAULT; |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 402 | oldlenp = (size_t __user *)addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | } |
| 404 | |
| 405 | lock_kernel(); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 406 | error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), |
| 407 | oldlenp, (void __user *)A(tmp.newval), tmp.newlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | unlock_kernel(); |
| 409 | if (oldlenp) { |
| 410 | if (!error) { |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 411 | if (get_user(oldlen, (size_t __user *)addr) || |
| 412 | put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | error = -EFAULT; |
| 414 | } |
| 415 | copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); |
| 416 | } |
| 417 | return error; |
| 418 | } |
| 419 | |
Eric W. Biederman | b89a817 | 2006-09-27 01:51:04 -0700 | [diff] [blame] | 420 | #endif /* CONFIG_SYSCTL_SYSCALL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 422 | asmlinkage long sys32_newuname(struct new_utsname __user * name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | { |
| 424 | int ret = 0; |
| 425 | |
| 426 | down_read(&uts_sem); |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 427 | if (copy_to_user(name, utsname(), sizeof *name)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | ret = -EFAULT; |
| 429 | up_read(&uts_sem); |
| 430 | |
| 431 | if (current->personality == PER_LINUX32 && !ret) |
| 432 | if (copy_to_user(name->machine, "mips\0\0\0", 8)) |
| 433 | ret = -EFAULT; |
| 434 | |
| 435 | return ret; |
| 436 | } |
| 437 | |
| 438 | asmlinkage int sys32_personality(unsigned long personality) |
| 439 | { |
| 440 | int ret; |
Thiemo Seufer | 53571ce | 2006-08-13 00:53:29 +0100 | [diff] [blame] | 441 | personality &= 0xffffffff; |
| 442 | if (personality(current->personality) == PER_LINUX32 && |
| 443 | personality == PER_LINUX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | personality = PER_LINUX32; |
| 445 | ret = sys_personality(personality); |
| 446 | if (ret == PER_LINUX32) |
| 447 | ret = PER_LINUX; |
| 448 | return ret; |
| 449 | } |
| 450 | |
| 451 | /* ustat compatibility */ |
| 452 | struct ustat32 { |
| 453 | compat_daddr_t f_tfree; |
| 454 | compat_ino_t f_tinode; |
| 455 | char f_fname[6]; |
| 456 | char f_fpack[6]; |
| 457 | }; |
| 458 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 459 | extern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 461 | asmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | { |
| 463 | int err; |
Ralf Baechle | e0daad4 | 2007-02-05 00:10:11 +0000 | [diff] [blame] | 464 | struct ustat tmp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 465 | struct ustat32 tmp32; |
| 466 | mm_segment_t old_fs = get_fs(); |
| 467 | |
| 468 | set_fs(KERNEL_DS); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 469 | err = sys_ustat(dev, (struct ustat __user *)&tmp); |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 470 | set_fs(old_fs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | |
| 472 | if (err) |
| 473 | goto out; |
| 474 | |
Ralf Baechle | 21a151d | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 475 | memset(&tmp32, 0, sizeof(struct ustat32)); |
Ralf Baechle | e0daad4 | 2007-02-05 00:10:11 +0000 | [diff] [blame] | 476 | tmp32.f_tfree = tmp.f_tfree; |
| 477 | tmp32.f_tinode = tmp.f_tinode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
Ralf Baechle | 21a151d | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 479 | err = copy_to_user(ubuf32, &tmp32, sizeof(struct ustat32)) ? -EFAULT : 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | |
| 481 | out: |
| 482 | return err; |
| 483 | } |
| 484 | |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 485 | asmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | s32 count) |
| 487 | { |
| 488 | mm_segment_t old_fs = get_fs(); |
| 489 | int ret; |
| 490 | off_t of; |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 491 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | if (offset && get_user(of, offset)) |
| 493 | return -EFAULT; |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 494 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | set_fs(KERNEL_DS); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 496 | ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 497 | set_fs(old_fs); |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 498 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | if (offset && put_user(of, offset)) |
| 500 | return -EFAULT; |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 501 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | return ret; |
| 503 | } |
| 504 | |
| 505 | asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, |
| 506 | size_t count) |
| 507 | { |
| 508 | return sys_readahead(fd, merge_64(a2, a3), count); |
| 509 | } |
| 510 | |
Ralf Baechle | a8d587a | 2006-04-01 07:49:21 +0100 | [diff] [blame] | 511 | asmlinkage long sys32_sync_file_range(int fd, int __pad, |
| 512 | unsigned long a2, unsigned long a3, |
| 513 | unsigned long a4, unsigned long a5, |
| 514 | int flags) |
| 515 | { |
| 516 | return sys_sync_file_range(fd, |
| 517 | merge_64(a2, a3), merge_64(a4, a5), |
| 518 | flags); |
| 519 | } |
| 520 | |
Atsushi Nemoto | 8676d2e | 2007-05-18 00:46:13 +0900 | [diff] [blame] | 521 | asmlinkage long sys32_fadvise64_64(int fd, int __pad, |
| 522 | unsigned long a2, unsigned long a3, |
| 523 | unsigned long a4, unsigned long a5, |
| 524 | int flags) |
| 525 | { |
| 526 | return sys_fadvise64_64(fd, |
| 527 | merge_64(a2, a3), merge_64(a4, a5), |
| 528 | flags); |
| 529 | } |
| 530 | |
Ralf Baechle | 4dc4677 | 2007-07-26 03:38:24 +0100 | [diff] [blame] | 531 | asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, |
| 532 | unsigned offset_a3, unsigned len_a4, unsigned len_a5) |
| 533 | { |
| 534 | return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), |
| 535 | merge_64(len_a4, len_a5)); |
| 536 | } |
| 537 | |
Ralf Baechle | 3c37026 | 2005-04-13 17:43:59 +0000 | [diff] [blame] | 538 | save_static_function(sys32_clone); |
David Rientjes | f5dbeaf | 2007-07-22 01:01:39 -0700 | [diff] [blame] | 539 | static int noinline __used |
Ralf Baechle | 3c37026 | 2005-04-13 17:43:59 +0000 | [diff] [blame] | 540 | _sys32_clone(nabi_no_regargs struct pt_regs regs) |
| 541 | { |
| 542 | unsigned long clone_flags; |
| 543 | unsigned long newsp; |
| 544 | int __user *parent_tidptr, *child_tidptr; |
| 545 | |
| 546 | clone_flags = regs.regs[4]; |
| 547 | newsp = regs.regs[5]; |
| 548 | if (!newsp) |
| 549 | newsp = regs.regs[29]; |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 550 | parent_tidptr = (int __user *) regs.regs[6]; |
Ralf Baechle | 3c37026 | 2005-04-13 17:43:59 +0000 | [diff] [blame] | 551 | |
| 552 | /* Use __dummy4 instead of getting it off the stack, so that |
| 553 | syscall() works. */ |
| 554 | child_tidptr = (int __user *) __dummy4; |
| 555 | return do_fork(clone_flags, newsp, ®s, 0, |
| 556 | parent_tidptr, child_tidptr); |
| 557 | } |