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 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 66 | SYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len, |
| 67 | unsigned long, prot, unsigned long, flags, unsigned long, fd, |
| 68 | unsigned long, pgoff) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | { |
| 70 | struct file * file = NULL; |
| 71 | unsigned long error; |
| 72 | |
| 73 | error = -EINVAL; |
H. Peter Anvin | 947df17 | 2006-02-24 21:20:29 -0800 | [diff] [blame] | 74 | if (pgoff & (~PAGE_MASK >> 12)) |
| 75 | goto out; |
| 76 | pgoff >>= PAGE_SHIFT-12; |
| 77 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | if (!(flags & MAP_ANONYMOUS)) { |
| 79 | error = -EBADF; |
| 80 | file = fget(fd); |
| 81 | if (!file) |
| 82 | goto out; |
| 83 | } |
| 84 | flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); |
| 85 | |
| 86 | down_write(¤t->mm->mmap_sem); |
| 87 | error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); |
| 88 | up_write(¤t->mm->mmap_sem); |
| 89 | if (file) |
| 90 | fput(file); |
| 91 | |
| 92 | out: |
| 93 | return error; |
| 94 | } |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | /* |
| 97 | * sys_execve() executes a new program. |
| 98 | */ |
| 99 | asmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) |
| 100 | { |
| 101 | int error; |
| 102 | char * filename; |
| 103 | |
| 104 | filename = getname(compat_ptr(regs.regs[4])); |
| 105 | error = PTR_ERR(filename); |
| 106 | if (IS_ERR(filename)) |
| 107 | goto out; |
| 108 | error = compat_do_execve(filename, compat_ptr(regs.regs[5]), |
| 109 | compat_ptr(regs.regs[6]), ®s); |
| 110 | putname(filename); |
| 111 | |
| 112 | out: |
| 113 | return error; |
| 114 | } |
| 115 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | #define RLIM_INFINITY32 0x7fffffff |
| 117 | #define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) |
| 118 | |
| 119 | struct rlimit32 { |
| 120 | int rlim_cur; |
| 121 | int rlim_max; |
| 122 | }; |
| 123 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 124 | SYSCALL_DEFINE4(32_truncate64, const char __user *, path, |
| 125 | unsigned long, __dummy, unsigned long, a2, unsigned long, a3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | { |
Ralf Baechle | d4e9cff | 2008-01-29 10:15:02 +0000 | [diff] [blame] | 127 | return sys_truncate(path, merge_64(a2, a3)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | } |
| 129 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 130 | SYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy, |
| 131 | unsigned long, a2, unsigned long, a3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | { |
Ralf Baechle | d4e9cff | 2008-01-29 10:15:02 +0000 | [diff] [blame] | 133 | return sys_ftruncate(fd, merge_64(a2, a3)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | } |
| 135 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 136 | SYSCALL_DEFINE5(32_llseek, unsigned long, fd, unsigned long, offset_high, |
| 137 | unsigned long, offset_low, loff_t __user *, result, |
| 138 | unsigned long, origin) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | { |
| 140 | return sys_llseek(fd, offset_high, offset_low, result, origin); |
| 141 | } |
| 142 | |
| 143 | /* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + |
| 144 | lseek back to original location. They fail just like lseek does on |
| 145 | non-seekable files. */ |
| 146 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 147 | SYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count, |
| 148 | unsigned long, unused, unsigned long, a4, unsigned long, a5) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | { |
Al Viro | 6ad0013 | 2006-04-26 07:28:09 +0100 | [diff] [blame] | 150 | return sys_pread64(fd, buf, count, merge_64(a4, a5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | } |
| 152 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 153 | SYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf, |
| 154 | size_t, count, u32, unused, u64, a4, u64, a5) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | { |
Al Viro | 6ad0013 | 2006-04-26 07:28:09 +0100 | [diff] [blame] | 156 | return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | } |
| 158 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 159 | SYSCALL_DEFINE2(32_sched_rr_get_interval, compat_pid_t, pid, |
| 160 | struct compat_timespec __user *, interval) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | { |
| 162 | struct timespec t; |
| 163 | int ret; |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 164 | mm_segment_t old_fs = get_fs(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 166 | set_fs(KERNEL_DS); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 167 | ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 168 | set_fs(old_fs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | if (put_user (t.tv_sec, &interval->tv_sec) || |
Ralf Baechle | 49a89ef | 2007-10-11 23:46:15 +0100 | [diff] [blame] | 170 | __put_user(t.tv_nsec, &interval->tv_nsec)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | return -EFAULT; |
| 172 | return ret; |
| 173 | } |
| 174 | |
Ralf Baechle | 65f8ebe | 2007-03-10 18:22:25 +0000 | [diff] [blame] | 175 | #ifdef CONFIG_SYSVIPC |
| 176 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 177 | SYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third, |
| 178 | unsigned long, ptr, unsigned long, fifth) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | { |
| 180 | int version, err; |
| 181 | |
| 182 | version = call >> 16; /* hack for backward compatibility */ |
| 183 | call &= 0xffff; |
| 184 | |
| 185 | switch (call) { |
| 186 | case SEMOP: |
| 187 | /* struct sembuf is the same on 32 and 64bit :)) */ |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 188 | err = sys_semtimedop(first, compat_ptr(ptr), second, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | break; |
| 190 | case SEMTIMEDOP: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 191 | err = compat_sys_semtimedop(first, compat_ptr(ptr), second, |
| 192 | compat_ptr(fifth)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 193 | break; |
| 194 | case SEMGET: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 195 | err = sys_semget(first, second, third); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | break; |
| 197 | case SEMCTL: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 198 | err = compat_sys_semctl(first, second, third, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | case MSGSND: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 201 | err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | break; |
| 203 | case MSGRCV: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 204 | err = compat_sys_msgrcv(first, second, fifth, third, |
| 205 | version, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | break; |
| 207 | case MSGGET: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 208 | err = sys_msgget((key_t) first, second); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | break; |
| 210 | case MSGCTL: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 211 | err = compat_sys_msgctl(first, second, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | case SHMAT: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 214 | err = compat_sys_shmat(first, second, third, version, |
| 215 | compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | break; |
| 217 | case SHMDT: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 218 | err = sys_shmdt(compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | break; |
| 220 | case SHMGET: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 221 | err = sys_shmget(first, (unsigned)second, third); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | break; |
| 223 | case SHMCTL: |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 224 | err = compat_sys_shmctl(first, second, compat_ptr(ptr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | break; |
| 226 | default: |
| 227 | err = -EINVAL; |
| 228 | break; |
| 229 | } |
| 230 | |
| 231 | return err; |
| 232 | } |
| 233 | |
Ralf Baechle | 65f8ebe | 2007-03-10 18:22:25 +0000 | [diff] [blame] | 234 | #else |
| 235 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 236 | SYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third, |
Xiaotian Feng | c189846 | 2009-03-09 09:45:12 +0800 | [diff] [blame] | 237 | u32, ptr, u32, fifth) |
Ralf Baechle | 65f8ebe | 2007-03-10 18:22:25 +0000 | [diff] [blame] | 238 | { |
| 239 | return -ENOSYS; |
| 240 | } |
| 241 | |
| 242 | #endif /* CONFIG_SYSVIPC */ |
| 243 | |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 244 | #ifdef CONFIG_MIPS32_N32 |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 245 | SYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | { |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 247 | /* compat_sys_semctl expects a pointer to union semun */ |
| 248 | u32 __user *uptr = compat_alloc_user_space(sizeof(u32)); |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 249 | if (put_user(arg, uptr)) |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 250 | return -EFAULT; |
| 251 | return compat_sys_semctl(semid, semnum, cmd, uptr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | } |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 253 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 254 | SYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz, |
| 255 | int, msgflg) |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 256 | { |
| 257 | return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp)); |
| 258 | } |
| 259 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 260 | SYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz, |
| 261 | int, msgtyp, int, msgflg) |
Atsushi Nemoto | e16d8df | 2007-01-10 18:53:33 +0900 | [diff] [blame] | 262 | { |
| 263 | return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64, |
| 264 | compat_ptr(msgp)); |
| 265 | } |
Atsushi Nemoto | 05e4396 | 2006-11-07 18:02:44 +0900 | [diff] [blame] | 266 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | struct sysctl_args32 |
| 269 | { |
| 270 | compat_caddr_t name; |
| 271 | int nlen; |
| 272 | compat_caddr_t oldval; |
| 273 | compat_caddr_t oldlenp; |
| 274 | compat_caddr_t newval; |
| 275 | compat_size_t newlen; |
| 276 | unsigned int __unused[4]; |
| 277 | }; |
| 278 | |
Eric W. Biederman | b89a817 | 2006-09-27 01:51:04 -0700 | [diff] [blame] | 279 | #ifdef CONFIG_SYSCTL_SYSCALL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 281 | SYSCALL_DEFINE1(32_sysctl, struct sysctl_args32 __user *, args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | { |
| 283 | struct sysctl_args32 tmp; |
| 284 | int error; |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 285 | size_t oldlen; |
| 286 | size_t __user *oldlenp = NULL; |
| 287 | unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 288 | |
| 289 | if (copy_from_user(&tmp, args, sizeof(tmp))) |
| 290 | return -EFAULT; |
| 291 | |
| 292 | if (tmp.oldval && tmp.oldlenp) { |
| 293 | /* Duh, this is ugly and might not work if sysctl_args |
| 294 | is in read-only memory, but do_sysctl does indirectly |
| 295 | a lot of uaccess in both directions and we'd have to |
| 296 | basically copy the whole sysctl.c here, and |
| 297 | glibc's __sysctl uses rw memory for the structure |
| 298 | anyway. */ |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 299 | if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || |
| 300 | put_user(oldlen, (size_t __user *)addr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | return -EFAULT; |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 302 | oldlenp = (size_t __user *)addr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | lock_kernel(); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 306 | error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), |
| 307 | oldlenp, (void __user *)A(tmp.newval), tmp.newlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | unlock_kernel(); |
| 309 | if (oldlenp) { |
| 310 | if (!error) { |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 311 | if (get_user(oldlen, (size_t __user *)addr) || |
| 312 | put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | error = -EFAULT; |
| 314 | } |
| 315 | copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); |
| 316 | } |
| 317 | return error; |
| 318 | } |
| 319 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 320 | #else |
| 321 | |
| 322 | SYSCALL_DEFINE1(32_sysctl, struct sysctl_args32 __user *, args) |
| 323 | { |
| 324 | return -ENOSYS; |
| 325 | } |
| 326 | |
Eric W. Biederman | b89a817 | 2006-09-27 01:51:04 -0700 | [diff] [blame] | 327 | #endif /* CONFIG_SYSCTL_SYSCALL */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 329 | SYSCALL_DEFINE1(32_newuname, struct new_utsname __user *, name) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | { |
| 331 | int ret = 0; |
| 332 | |
| 333 | down_read(&uts_sem); |
Serge E. Hallyn | e9ff399 | 2006-10-02 02:18:11 -0700 | [diff] [blame] | 334 | if (copy_to_user(name, utsname(), sizeof *name)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | ret = -EFAULT; |
| 336 | up_read(&uts_sem); |
| 337 | |
| 338 | if (current->personality == PER_LINUX32 && !ret) |
| 339 | if (copy_to_user(name->machine, "mips\0\0\0", 8)) |
| 340 | ret = -EFAULT; |
| 341 | |
| 342 | return ret; |
| 343 | } |
| 344 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 345 | SYSCALL_DEFINE1(32_personality, unsigned long, personality) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | { |
| 347 | int ret; |
Thiemo Seufer | 53571ce | 2006-08-13 00:53:29 +0100 | [diff] [blame] | 348 | personality &= 0xffffffff; |
| 349 | if (personality(current->personality) == PER_LINUX32 && |
| 350 | personality == PER_LINUX) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | personality = PER_LINUX32; |
| 352 | ret = sys_personality(personality); |
| 353 | if (ret == PER_LINUX32) |
| 354 | ret = PER_LINUX; |
| 355 | return ret; |
| 356 | } |
| 357 | |
Ralf Baechle | dbda6ac | 2009-02-08 16:00:26 +0000 | [diff] [blame] | 358 | SYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd, |
| 359 | compat_off_t __user *, offset, s32, count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | { |
| 361 | mm_segment_t old_fs = get_fs(); |
| 362 | int ret; |
| 363 | off_t of; |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 364 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | if (offset && get_user(of, offset)) |
| 366 | return -EFAULT; |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 367 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | set_fs(KERNEL_DS); |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 369 | 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] | 370 | set_fs(old_fs); |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | if (offset && put_user(of, offset)) |
| 373 | return -EFAULT; |
Ralf Baechle | 42a3b4f | 2005-09-03 15:56:17 -0700 | [diff] [blame] | 374 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | return ret; |
| 376 | } |
| 377 | |
| 378 | asmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, |
| 379 | size_t count) |
| 380 | { |
| 381 | return sys_readahead(fd, merge_64(a2, a3), count); |
| 382 | } |
| 383 | |
Ralf Baechle | a8d587a | 2006-04-01 07:49:21 +0100 | [diff] [blame] | 384 | asmlinkage long sys32_sync_file_range(int fd, int __pad, |
| 385 | unsigned long a2, unsigned long a3, |
| 386 | unsigned long a4, unsigned long a5, |
| 387 | int flags) |
| 388 | { |
| 389 | return sys_sync_file_range(fd, |
| 390 | merge_64(a2, a3), merge_64(a4, a5), |
| 391 | flags); |
| 392 | } |
| 393 | |
Atsushi Nemoto | 8676d2e | 2007-05-18 00:46:13 +0900 | [diff] [blame] | 394 | asmlinkage long sys32_fadvise64_64(int fd, int __pad, |
| 395 | unsigned long a2, unsigned long a3, |
| 396 | unsigned long a4, unsigned long a5, |
| 397 | int flags) |
| 398 | { |
| 399 | return sys_fadvise64_64(fd, |
| 400 | merge_64(a2, a3), merge_64(a4, a5), |
| 401 | flags); |
| 402 | } |
| 403 | |
Ralf Baechle | 4dc4677 | 2007-07-26 03:38:24 +0100 | [diff] [blame] | 404 | asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, |
| 405 | unsigned offset_a3, unsigned len_a4, unsigned len_a5) |
| 406 | { |
| 407 | return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), |
| 408 | merge_64(len_a4, len_a5)); |
| 409 | } |
| 410 | |
Ralf Baechle | 3c37026 | 2005-04-13 17:43:59 +0000 | [diff] [blame] | 411 | save_static_function(sys32_clone); |
David Rientjes | f5dbeaf | 2007-07-22 01:01:39 -0700 | [diff] [blame] | 412 | static int noinline __used |
Ralf Baechle | 3c37026 | 2005-04-13 17:43:59 +0000 | [diff] [blame] | 413 | _sys32_clone(nabi_no_regargs struct pt_regs regs) |
| 414 | { |
| 415 | unsigned long clone_flags; |
| 416 | unsigned long newsp; |
| 417 | int __user *parent_tidptr, *child_tidptr; |
| 418 | |
| 419 | clone_flags = regs.regs[4]; |
| 420 | newsp = regs.regs[5]; |
| 421 | if (!newsp) |
| 422 | newsp = regs.regs[29]; |
Atsushi Nemoto | 219ac73 | 2006-02-21 16:05:11 +0900 | [diff] [blame] | 423 | parent_tidptr = (int __user *) regs.regs[6]; |
Ralf Baechle | 3c37026 | 2005-04-13 17:43:59 +0000 | [diff] [blame] | 424 | |
| 425 | /* Use __dummy4 instead of getting it off the stack, so that |
| 426 | syscall() works. */ |
| 427 | child_tidptr = (int __user *) __dummy4; |
| 428 | return do_fork(clone_flags, newsp, ®s, 0, |
| 429 | parent_tidptr, child_tidptr); |
| 430 | } |