linux32.c revision d6c178e9694e7e0c7ffe0289cf4389a498cac735
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Conversion between 32-bit and 64-bit native system calls. 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2000 Silicon Graphics, Inc. 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Written by Ulf Carlsson (ulfc@engr.sgi.com) 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sys32_execve from ia64/ia32 code, Feb 2000, Kanoj Sarcar (kanoj@sgi.com) 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/compiler.h> 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/mm.h> 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/file.h> 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/smp_lock.h> 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/highuid.h> 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/resource.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/highmem.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/time.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/times.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/poll.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/skbuff.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/filter.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/shm.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sem.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/msg.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/icmpv6.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/syscalls.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sysctl.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/utime.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/utsname.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/personality.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/dnotify.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/binfmts.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/security.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/compat.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vfs.h> 37cba4fbbff2e9722e93b28e18fa7714b9013cbddaAdrian Bunk#include <linux/ipc.h> 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/sock.h> 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/scm.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 42431dc8040354db65e4f8d4d4e21ae4fab41f5bc3Ralf Baechle#include <asm/compat-signal.h> 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sim.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/mmu_context.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/mman.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Use this to get at 32-bit user passed pointers. */ 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* A() macro should be used for places where you e.g. 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds have some internal variable u32 and just want to get 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rid of a compiler warning. AA() has to be used in 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds places where you want to convert a function argument 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to 32bit pointer or when you e.g. access pt_regs 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds structure and want to consider 32bit registers only. 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define A(__x) ((unsigned long)(__x)) 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AA(__x) ((unsigned long)((int)__x)) 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEB__ 6021a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEL__ 6321a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 66dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE6(32_mmap2, unsigned long, addr, unsigned long, len, 67dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle unsigned long, prot, unsigned long, flags, unsigned long, fd, 68dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle unsigned long, pgoff) 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct file * file = NULL; 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long error; 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EINVAL; 74947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin if (pgoff & (~PAGE_MASK >> 12)) 75947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin goto out; 76947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin pgoff >>= PAGE_SHIFT-12; 77947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(flags & MAP_ANONYMOUS)) { 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EBADF; 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds file = fget(fd); 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!file) 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down_write(¤t->mm->mmap_sem); 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up_write(¤t->mm->mmap_sem); 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (file) 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fput(file); 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sys_execve() executes a new program. 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char * filename; 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds filename = getname(compat_ptr(regs.regs[4])); 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = PTR_ERR(filename); 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(filename)) 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = compat_do_execve(filename, compat_ptr(regs.regs[5]), 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_ptr(regs.regs[6]), ®s); 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds putname(filename); 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RLIM_INFINITY32 0x7fffffff 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct rlimit32 { 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rlim_cur; 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rlim_max; 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 124dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE4(32_truncate64, const char __user *, path, 125dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle unsigned long, __dummy, unsigned long, a2, unsigned long, a3) 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 127d4e9cffa161da806cb4bc9df4a4e49d287156bfaRalf Baechle return sys_truncate(path, merge_64(a2, a3)); 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 130dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE4(32_ftruncate64, unsigned long, fd, unsigned long, __dummy, 131dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle unsigned long, a2, unsigned long, a3) 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 133d4e9cffa161da806cb4bc9df4a4e49d287156bfaRalf Baechle return sys_ftruncate(fd, merge_64(a2, a3)); 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 136d6c178e9694e7e0c7ffe0289cf4389a498cac735Ralf BaechleSYSCALL_DEFINE5(32_llseek, unsigned int, fd, unsigned int, offset_high, 137d6c178e9694e7e0c7ffe0289cf4389a498cac735Ralf Baechle unsigned int, offset_low, loff_t __user *, result, 138d6c178e9694e7e0c7ffe0289cf4389a498cac735Ralf Baechle unsigned int, origin) 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_llseek(fd, offset_high, offset_low, result, origin); 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lseek back to original location. They fail just like lseek does on 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds non-seekable files. */ 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 147dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE6(32_pread, unsigned long, fd, char __user *, buf, size_t, count, 148dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle unsigned long, unused, unsigned long, a4, unsigned long, a5) 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1506ad0013b316367671ef316cff91ab2d912e309c9Al Viro return sys_pread64(fd, buf, count, merge_64(a4, a5)); 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 153dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE6(32_pwrite, unsigned int, fd, const char __user *, buf, 154dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle size_t, count, u32, unused, u64, a4, u64, a5) 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1566ad0013b316367671ef316cff91ab2d912e309c9Al Viro return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 159dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE2(32_sched_rr_get_interval, compat_pid_t, pid, 160dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle struct compat_timespec __user *, interval) 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timespec t; 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 16449a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle mm_segment_t old_fs = get_fs(); 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 16649a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle set_fs(KERNEL_DS); 167219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); 16849a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle set_fs(old_fs); 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (put_user (t.tv_sec, &interval->tv_sec) || 17049a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle __put_user(t.tv_nsec, &interval->tv_nsec)) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 17565f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle#ifdef CONFIG_SYSVIPC 17665f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 177dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE6(32_ipc, u32, call, long, first, long, second, long, third, 178dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle unsigned long, ptr, unsigned long, fifth) 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int version, err; 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds version = call >> 16; /* hack for backward compatibility */ 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds call &= 0xffff; 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (call) { 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMOP: 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* struct sembuf is the same on 32 and 64bit :)) */ 18805e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_semtimedop(first, compat_ptr(ptr), second, NULL); 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMTIMEDOP: 19105e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_semtimedop(first, compat_ptr(ptr), second, 19205e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto compat_ptr(fifth)); 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMGET: 19505e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_semget(first, second, third); 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMCTL: 19805e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_semctl(first, second, third, compat_ptr(ptr)); 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGSND: 20105e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGRCV: 20405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_msgrcv(first, second, fifth, third, 20505e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto version, compat_ptr(ptr)); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGGET: 20805e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_msgget((key_t) first, second); 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGCTL: 21105e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_msgctl(first, second, compat_ptr(ptr)); 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMAT: 21405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_shmat(first, second, third, version, 21505e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto compat_ptr(ptr)); 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMDT: 21805e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_shmdt(compat_ptr(ptr)); 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMGET: 22105e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_shmget(first, (unsigned)second, third); 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMCTL: 22405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_shmctl(first, second, compat_ptr(ptr)); 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EINVAL; 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 23465f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle#else 23565f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 236dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE6(32_ipc, u32, call, int, first, int, second, int, third, 237c189846ecf900cd6b3ad7d3cef5b45a746ce646bXiaotian Feng u32, ptr, u32, fifth) 23865f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle{ 23965f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle return -ENOSYS; 24065f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle} 24165f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 24265f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle#endif /* CONFIG_SYSVIPC */ 24365f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 24405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto#ifdef CONFIG_MIPS32_N32 245dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE4(n32_semctl, int, semid, int, semnum, int, cmd, u32, arg) 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 24705e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto /* compat_sys_semctl expects a pointer to union semun */ 24805e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto u32 __user *uptr = compat_alloc_user_space(sizeof(u32)); 249e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto if (put_user(arg, uptr)) 25005e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto return -EFAULT; 25105e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto return compat_sys_semctl(semid, semnum, cmd, uptr); 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 253e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto 254dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE4(n32_msgsnd, int, msqid, u32, msgp, unsigned int, msgsz, 255dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle int, msgflg) 256e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto{ 257e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp)); 258e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto} 259e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto 260dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE5(n32_msgrcv, int, msqid, u32, msgp, size_t, msgsz, 261dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle int, msgtyp, int, msgflg) 262e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto{ 263e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64, 264e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto compat_ptr(msgp)); 265e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto} 26605e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto#endif 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct sysctl_args32 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t name; 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int nlen; 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t oldval; 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t oldlenp; 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t newval; 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_size_t newlen; 2761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int __unused[4]; 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 279b89a81712f486e4f7a606987413e387605fdeaf4Eric W. Biederman#ifdef CONFIG_SYSCTL_SYSCALL 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 281dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE1(32_sysctl, struct sysctl_args32 __user *, args) 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sysctl_args32 tmp; 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 285219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto size_t oldlen; 286219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto size_t __user *oldlenp = NULL; 287219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tmp.oldval && tmp.oldlenp) { 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Duh, this is ugly and might not work if sysctl_args 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is in read-only memory, but do_sysctl does indirectly 2951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds a lot of uaccess in both directions and we'd have to 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds basically copy the whole sysctl.c here, and 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds glibc's __sysctl uses rw memory for the structure 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds anyway. */ 299219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || 300219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto put_user(oldlen, (size_t __user *)addr)) 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 302219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto oldlenp = (size_t __user *)addr; 3031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lock_kernel(); 306219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), 307219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto oldlenp, (void __user *)A(tmp.newval), tmp.newlen); 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unlock_kernel(); 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (oldlenp) { 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!error) { 311219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto if (get_user(oldlen, (size_t __user *)addr) || 312219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EFAULT; 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 320dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle#else 321dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle 322dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE1(32_sysctl, struct sysctl_args32 __user *, args) 323dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle{ 324dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle return -ENOSYS; 325dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle} 326dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle 327b89a81712f486e4f7a606987413e387605fdeaf4Eric W. Biederman#endif /* CONFIG_SYSCTL_SYSCALL */ 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 329dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE1(32_newuname, struct new_utsname __user *, name) 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down_read(&uts_sem); 334e9ff3990f08e9a0c2839cc22808b01732ea5b3e4Serge E. Hallyn if (copy_to_user(name, utsname(), sizeof *name)) 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EFAULT; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up_read(&uts_sem); 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (current->personality == PER_LINUX32 && !ret) 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(name->machine, "mips\0\0\0", 8)) 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EFAULT; 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 345dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE1(32_personality, unsigned long, personality) 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 34853571ce47010562f5e67782ea00206f379a5cd65Thiemo Seufer personality &= 0xffffffff; 34953571ce47010562f5e67782ea00206f379a5cd65Thiemo Seufer if (personality(current->personality) == PER_LINUX32 && 35053571ce47010562f5e67782ea00206f379a5cd65Thiemo Seufer personality == PER_LINUX) 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds personality = PER_LINUX32; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = sys_personality(personality); 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret == PER_LINUX32) 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = PER_LINUX; 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 358dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf BaechleSYSCALL_DEFINE4(32_sendfile, long, out_fd, long, in_fd, 359dbda6ac0897603f6c6dfadbbc37f9882177ec7acRalf Baechle compat_off_t __user *, offset, s32, count) 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mm_segment_t old_fs = get_fs(); 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds off_t of; 36442a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (offset && get_user(of, offset)) 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 36742a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_fs(KERNEL_DS); 369219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count); 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_fs(old_fs); 37142a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (offset && put_user(of, offset)) 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 37442a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 3761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count) 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_readahead(fd, merge_64(a2, a3), count); 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 384a8d587a71b76328447de165b12495650721b9286Ralf Baechleasmlinkage long sys32_sync_file_range(int fd, int __pad, 385a8d587a71b76328447de165b12495650721b9286Ralf Baechle unsigned long a2, unsigned long a3, 386a8d587a71b76328447de165b12495650721b9286Ralf Baechle unsigned long a4, unsigned long a5, 387a8d587a71b76328447de165b12495650721b9286Ralf Baechle int flags) 388a8d587a71b76328447de165b12495650721b9286Ralf Baechle{ 389a8d587a71b76328447de165b12495650721b9286Ralf Baechle return sys_sync_file_range(fd, 390a8d587a71b76328447de165b12495650721b9286Ralf Baechle merge_64(a2, a3), merge_64(a4, a5), 391a8d587a71b76328447de165b12495650721b9286Ralf Baechle flags); 392a8d587a71b76328447de165b12495650721b9286Ralf Baechle} 393a8d587a71b76328447de165b12495650721b9286Ralf Baechle 3948676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemotoasmlinkage long sys32_fadvise64_64(int fd, int __pad, 3958676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto unsigned long a2, unsigned long a3, 3968676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto unsigned long a4, unsigned long a5, 3978676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto int flags) 3988676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto{ 3998676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto return sys_fadvise64_64(fd, 4008676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto merge_64(a2, a3), merge_64(a4, a5), 4018676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto flags); 4028676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto} 4038676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto 4044dc467756e77838c592a6dc797434f11761d33f5Ralf Baechleasmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, 4054dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle unsigned offset_a3, unsigned len_a4, unsigned len_a5) 4064dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle{ 4074dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), 4084dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle merge_64(len_a4, len_a5)); 4094dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle} 4104dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle 4113c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechlesave_static_function(sys32_clone); 412f5dbeaf5ed3938beea8e58ee473982a4bcadc172David Rientjesstatic int noinline __used 4133c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle_sys32_clone(nabi_no_regargs struct pt_regs regs) 4143c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle{ 4153c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle unsigned long clone_flags; 4163c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle unsigned long newsp; 4173c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle int __user *parent_tidptr, *child_tidptr; 4183c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle 4193c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle clone_flags = regs.regs[4]; 4203c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle newsp = regs.regs[5]; 4213c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle if (!newsp) 4223c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle newsp = regs.regs[29]; 423219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto parent_tidptr = (int __user *) regs.regs[6]; 4243c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle 4253c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle /* Use __dummy4 instead of getting it off the stack, so that 4263c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle syscall() works. */ 4273c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle child_tidptr = (int __user *) __dummy4; 4283c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle return do_fork(clone_flags, newsp, ®s, 0, 4293c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle parent_tidptr, child_tidptr); 4303c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle} 431