linux32.c revision cba4fbbff2e9722e93b28e18fa7714b9013cbdda
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/dirent.h> 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/resource.h> 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/highmem.h> 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/time.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/times.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/poll.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/skbuff.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/filter.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/shm.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sem.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/msg.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/icmpv6.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/syscalls.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/sysctl.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/utime.h> 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/utsname.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/personality.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/dnotify.h> 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/binfmts.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/security.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/compat.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/vfs.h> 38cba4fbbff2e9722e93b28e18fa7714b9013cbddaAdrian Bunk#include <linux/ipc.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/sock.h> 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/scm.h> 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 43431dc8040354db65e4f8d4d4e21ae4fab41f5bc3Ralf Baechle#include <asm/compat-signal.h> 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/sim.h> 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/mmu_context.h> 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/mman.h> 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* Use this to get at 32-bit user passed pointers. */ 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* A() macro should be used for places where you e.g. 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds have some internal variable u32 and just want to get 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds rid of a compiler warning. AA() has to be used in 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds places where you want to convert a function argument 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds to 32bit pointer or when you e.g. access pt_regs 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds structure and want to consider 32bit registers only. 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define A(__x) ((unsigned long)(__x)) 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define AA(__x) ((unsigned long)((int)__x)) 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEB__ 6121a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle#define merge_64(r1, r2) ((((r1) & 0xffffffffUL) << 32) + ((r2) & 0xffffffffUL)) 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEL__ 6421a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle#define merge_64(r1, r2) ((((r2) & 0xffffffffUL) << 32) + ((r1) & 0xffffffffUL)) 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Revalidate the inode. This is required for proper NFS attribute caching. 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 71219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoint cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf) 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct compat_stat tmp; 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EOVERFLOW; 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds memset(&tmp, 0, sizeof(tmp)); 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_dev = new_encode_dev(stat->dev); 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_ino = stat->ino; 81afefdbb28a0a2af689926c30b94a14aea6036719David Howells if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino) 82afefdbb28a0a2af689926c30b94a14aea6036719David Howells return -EOVERFLOW; 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_mode = stat->mode; 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_nlink = stat->nlink; 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SET_UID(tmp.st_uid, stat->uid); 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SET_GID(tmp.st_gid, stat->gid); 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_rdev = new_encode_dev(stat->rdev); 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_size = stat->size; 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_atime = stat->atime.tv_sec; 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_mtime = stat->mtime.tv_sec; 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_ctime = stat->ctime.tv_sec; 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef STAT_HAVE_NSEC 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_atime_nsec = stat->atime.tv_nsec; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_mtime_nsec = stat->mtime.tv_nsec; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_ctime_nsec = stat->ctime.tv_nsec; 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_blocks = stat->blocks; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tmp.st_blksize = stat->blksize; 9921a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle return copy_to_user(statbuf, &tmp, sizeof(tmp)) ? -EFAULT : 0; 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage unsigned long 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldssys32_mmap2(unsigned long addr, unsigned long len, unsigned long prot, 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags, unsigned long fd, unsigned long pgoff) 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct file * file = NULL; 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long error; 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EINVAL; 110947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin if (pgoff & (~PAGE_MASK >> 12)) 111947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin goto out; 112947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin pgoff >>= PAGE_SHIFT-12; 113947df17cb1be4c7239280a77263c249fde1379efH. Peter Anvin 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!(flags & MAP_ANONYMOUS)) { 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EBADF; 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds file = fget(fd); 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!file) 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down_write(¤t->mm->mmap_sem); 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up_write(¤t->mm->mmap_sem); 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (file) 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds fput(file); 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 133219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage int sys_truncate64(const char __user *path, unsigned int high, 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int low) 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((int)high < 0) 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_truncate(path, ((long) high << 32) | low); 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int sys_ftruncate64(unsigned int fd, unsigned int high, 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int low) 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((int)high < 0) 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EINVAL; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_ftruncate(fd, ((long) high << 32) | low); 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * sys_execve() executes a new program. 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int sys32_execve(nabi_no_regargs struct pt_regs regs) 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char * filename; 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds filename = getname(compat_ptr(regs.regs[4])); 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = PTR_ERR(filename); 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (IS_ERR(filename)) 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = compat_do_execve(filename, compat_ptr(regs.regs[5]), 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_ptr(regs.regs[6]), ®s); 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds putname(filename); 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RLIM_INFINITY32 0x7fffffff 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x) 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct rlimit32 { 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rlim_cur; 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int rlim_max; 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEB__ 178219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, 1791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int length_hi, int length_lo) 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEL__ 182219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage long sys32_truncate64(const char __user * path, unsigned long __dummy, 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int length_lo, int length_hi) 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loff_t length; 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_truncate(path, length); 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEB__ 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int length_hi, int length_lo) 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#ifdef __MIPSEL__ 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long __dummy, 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int length_lo, int length_hi) 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds loff_t length; 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds length = ((unsigned long) length_hi << 32) | (unsigned int) length_lo; 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_ftruncate(fd, length); 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline long 210219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoget_tv32(struct timeval *o, struct compat_timeval __user *i) 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (!access_ok(VERIFY_READ, i, sizeof(*i)) || 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (__get_user(o->tv_sec, &i->tv_sec) | 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __get_user(o->tv_usec, &i->tv_usec))); 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic inline long 218219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoput_tv32(struct compat_timeval __user *o, struct timeval *i) 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return (!access_ok(VERIFY_WRITE, o, sizeof(*o)) || 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (__put_user(i->tv_sec, &o->tv_sec) | 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __put_user(i->tv_usec, &o->tv_usec))); 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsextern struct timezone sys_tz; 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int 228219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotosys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tv) { 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timeval ktv; 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds do_gettimeofday(&ktv); 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (put_tv32(tv, &ktv)) 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tz) { 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(tz, &sys_tz, sizeof(sys_tz))) 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 243219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotostatic inline long get_ts32(struct timespec *o, struct compat_timeval __user *i) 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds long usec; 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!access_ok(VERIFY_READ, i, sizeof(*i))) 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (__get_user(o->tv_sec, &i->tv_sec)) 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (__get_user(usec, &i->tv_usec)) 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds o->tv_nsec = usec * 1000; 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int 258219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotosys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz) 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timespec kts; 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timezone ktz; 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tv) { 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (get_ts32(&kts, tv)) 2651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tz) { 2681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&ktz, tz, sizeof(ktz))) 2691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 2701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL); 2731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int sys32_llseek(unsigned int fd, unsigned int offset_high, 276219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto unsigned int offset_low, loff_t __user * result, 2771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int origin) 2781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_llseek(fd, offset_high, offset_low, result, origin); 2801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* From the Single Unix Spec: pread & pwrite act like lseek to pos + op + 2831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lseek back to original location. They fail just like lseek does on 2841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds non-seekable files. */ 2851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 286219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage ssize_t sys32_pread(unsigned int fd, char __user * buf, 2871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count, u32 unused, u64 a4, u64 a5) 2881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2896ad0013b316367671ef316cff91ab2d912e309c9Al Viro return sys_pread64(fd, buf, count, merge_64(a4, a5)); 2901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 292219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage ssize_t sys32_pwrite(unsigned int fd, const char __user * buf, 2931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count, u32 unused, u64 a4, u64 a5) 2941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2956ad0013b316367671ef316cff91ab2d912e309c9Al Viro return sys_pwrite64(fd, buf, count, merge_64(a4, a5)); 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int sys32_sched_rr_get_interval(compat_pid_t pid, 299219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto struct compat_timespec __user *interval) 3001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct timespec t; 3021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 30349a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle mm_segment_t old_fs = get_fs(); 3041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 30549a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle set_fs(KERNEL_DS); 306219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); 30749a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle set_fs(old_fs); 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (put_user (t.tv_sec, &interval->tv_sec) || 30949a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle __put_user(t.tv_nsec, &interval->tv_nsec)) 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31465f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle#ifdef CONFIG_SYSVIPC 31565f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage long 31749a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechlesys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth) 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int version, err; 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds version = call >> 16; /* hack for backward compatibility */ 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds call &= 0xffff; 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (call) { 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMOP: 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* struct sembuf is the same on 32 and 64bit :)) */ 32705e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_semtimedop(first, compat_ptr(ptr), second, NULL); 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMTIMEDOP: 33005e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_semtimedop(first, compat_ptr(ptr), second, 33105e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto compat_ptr(fifth)); 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMGET: 33405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_semget(first, second, third); 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SEMCTL: 33705e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_semctl(first, second, third, compat_ptr(ptr)); 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGSND: 34005e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_msgsnd(first, second, third, compat_ptr(ptr)); 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGRCV: 34305e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_msgrcv(first, second, fifth, third, 34405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto version, compat_ptr(ptr)); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGGET: 34705e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_msgget((key_t) first, second); 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case MSGCTL: 35005e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_msgctl(first, second, compat_ptr(ptr)); 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMAT: 35305e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_shmat(first, second, third, version, 35405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto compat_ptr(ptr)); 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMDT: 35705e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_shmdt(compat_ptr(ptr)); 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMGET: 36005e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = sys_shmget(first, (unsigned)second, third); 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case SHMCTL: 36305e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto err = compat_sys_shmctl(first, second, compat_ptr(ptr)); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds err = -EINVAL; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 37365f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle#else 37465f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 37565f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechleasmlinkage long 37649a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechlesys32_ipc(u32 call, int first, int second, int third, u32 ptr, u32 fifth) 37765f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle{ 37865f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle return -ENOSYS; 37965f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle} 38065f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 38165f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle#endif /* CONFIG_SYSVIPC */ 38265f8ebe0630ffadce19a3ed11c7eb41bc6cfabceRalf Baechle 38305e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto#ifdef CONFIG_MIPS32_N32 384e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemotoasmlinkage long sysn32_semctl(int semid, int semnum, int cmd, u32 arg) 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 38605e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto /* compat_sys_semctl expects a pointer to union semun */ 38705e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto u32 __user *uptr = compat_alloc_user_space(sizeof(u32)); 388e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto if (put_user(arg, uptr)) 38905e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto return -EFAULT; 39005e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto return compat_sys_semctl(semid, semnum, cmd, uptr); 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 392e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto 393e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemotoasmlinkage long sysn32_msgsnd(int msqid, u32 msgp, unsigned msgsz, int msgflg) 394e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto{ 395e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto return compat_sys_msgsnd(msqid, msgsz, msgflg, compat_ptr(msgp)); 396e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto} 397e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto 398e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemotoasmlinkage long sysn32_msgrcv(int msqid, u32 msgp, size_t msgsz, int msgtyp, 399e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto int msgflg) 400e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto{ 401e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto return compat_sys_msgrcv(msqid, msgsz, msgtyp, msgflg, IPC_64, 402e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto compat_ptr(msgp)); 403e16d8df0be26c8e82c4a1188af8143f2d466b12aAtsushi Nemoto} 40405e4396651ca1cac51d8da9ff4992741c9dc1e39Atsushi Nemoto#endif 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct sysctl_args32 4071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t name; 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int nlen; 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t oldval; 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t oldlenp; 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_caddr_t newval; 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_size_t newlen; 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int __unused[4]; 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 417b89a81712f486e4f7a606987413e387605fdeaf4Eric W. Biederman#ifdef CONFIG_SYSCTL_SYSCALL 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 419219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage long sys32_sysctl(struct sysctl_args32 __user *args) 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct sysctl_args32 tmp; 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int error; 423219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto size_t oldlen; 424219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto size_t __user *oldlenp = NULL; 425219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto unsigned long addr = (((unsigned long)&args->__unused[0]) + 7) & ~7; 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_from_user(&tmp, args, sizeof(tmp))) 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tmp.oldval && tmp.oldlenp) { 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Duh, this is ugly and might not work if sysctl_args 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds is in read-only memory, but do_sysctl does indirectly 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds a lot of uaccess in both directions and we'd have to 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds basically copy the whole sysctl.c here, and 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds glibc's __sysctl uses rw memory for the structure 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds anyway. */ 437219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto if (get_user(oldlen, (u32 __user *)A(tmp.oldlenp)) || 438219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto put_user(oldlen, (size_t __user *)addr)) 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 440219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto oldlenp = (size_t __user *)addr; 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds lock_kernel(); 444219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto error = do_sysctl((int __user *)A(tmp.name), tmp.nlen, (void __user *)A(tmp.oldval), 445219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto oldlenp, (void __user *)A(tmp.newval), tmp.newlen); 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unlock_kernel(); 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (oldlenp) { 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!error) { 449219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto if (get_user(oldlen, (size_t __user *)addr) || 450219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto put_user(oldlen, (u32 __user *)A(tmp.oldlenp))) 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds error = -EFAULT; 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused)); 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return error; 4561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 458b89a81712f486e4f7a606987413e387605fdeaf4Eric W. Biederman#endif /* CONFIG_SYSCTL_SYSCALL */ 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 460219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage long sys32_newuname(struct new_utsname __user * name) 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret = 0; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds down_read(&uts_sem); 465e9ff3990f08e9a0c2839cc22808b01732ea5b3e4Serge E. Hallyn if (copy_to_user(name, utsname(), sizeof *name)) 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EFAULT; 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds up_read(&uts_sem); 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (current->personality == PER_LINUX32 && !ret) 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (copy_to_user(name->machine, "mips\0\0\0", 8)) 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = -EFAULT; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage int sys32_personality(unsigned long personality) 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 47953571ce47010562f5e67782ea00206f379a5cd65Thiemo Seufer personality &= 0xffffffff; 48053571ce47010562f5e67782ea00206f379a5cd65Thiemo Seufer if (personality(current->personality) == PER_LINUX32 && 48153571ce47010562f5e67782ea00206f379a5cd65Thiemo Seufer personality == PER_LINUX) 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds personality = PER_LINUX32; 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = sys_personality(personality); 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (ret == PER_LINUX32) 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ret = PER_LINUX; 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* ustat compatibility */ 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct ustat32 { 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_daddr_t f_tfree; 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds compat_ino_t f_tinode; 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char f_fname[6]; 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char f_fpack[6]; 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 497219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoextern asmlinkage long sys_ustat(dev_t dev, struct ustat __user * ubuf); 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 499219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage int sys32_ustat(dev_t dev, struct ustat32 __user * ubuf32) 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int err; 502e0daad449c5195fa4552c60392eeee4e5c58d31cRalf Baechle struct ustat tmp; 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct ustat32 tmp32; 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mm_segment_t old_fs = get_fs(); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_fs(KERNEL_DS); 507219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto err = sys_ustat(dev, (struct ustat __user *)&tmp); 50849a89efbbbcc178a39555c43bd59a7593c429664Ralf Baechle set_fs(old_fs); 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (err) 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto out; 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51321a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle memset(&tmp32, 0, sizeof(struct ustat32)); 514e0daad449c5195fa4552c60392eeee4e5c58d31cRalf Baechle tmp32.f_tfree = tmp.f_tfree; 515e0daad449c5195fa4552c60392eeee4e5c58d31cRalf Baechle tmp32.f_tinode = tmp.f_tinode; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 51721a151d8ca3aa74ee79f9791a9d4dc370d3e0636Ralf Baechle err = copy_to_user(ubuf32, &tmp32, sizeof(struct ustat32)) ? -EFAULT : 0; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsout: 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return err; 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 523219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemotoasmlinkage int sys32_sendfile(int out_fd, int in_fd, compat_off_t __user *offset, 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds s32 count) 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mm_segment_t old_fs = get_fs(); 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int ret; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds off_t of; 52942a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (offset && get_user(of, offset)) 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 53242a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_fs(KERNEL_DS); 534219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, count); 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_fs(old_fs); 53642a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 5371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (offset && put_user(of, offset)) 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EFAULT; 53942a3b4f25af8f8d77feddf27f839fa0628dbff1aRalf Baechle 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return ret; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsasmlinkage ssize_t sys32_readahead(int fd, u32 pad0, u64 a2, u64 a3, 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds size_t count) 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return sys_readahead(fd, merge_64(a2, a3), count); 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 549a8d587a71b76328447de165b12495650721b9286Ralf Baechleasmlinkage long sys32_sync_file_range(int fd, int __pad, 550a8d587a71b76328447de165b12495650721b9286Ralf Baechle unsigned long a2, unsigned long a3, 551a8d587a71b76328447de165b12495650721b9286Ralf Baechle unsigned long a4, unsigned long a5, 552a8d587a71b76328447de165b12495650721b9286Ralf Baechle int flags) 553a8d587a71b76328447de165b12495650721b9286Ralf Baechle{ 554a8d587a71b76328447de165b12495650721b9286Ralf Baechle return sys_sync_file_range(fd, 555a8d587a71b76328447de165b12495650721b9286Ralf Baechle merge_64(a2, a3), merge_64(a4, a5), 556a8d587a71b76328447de165b12495650721b9286Ralf Baechle flags); 557a8d587a71b76328447de165b12495650721b9286Ralf Baechle} 558a8d587a71b76328447de165b12495650721b9286Ralf Baechle 5598676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemotoasmlinkage long sys32_fadvise64_64(int fd, int __pad, 5608676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto unsigned long a2, unsigned long a3, 5618676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto unsigned long a4, unsigned long a5, 5628676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto int flags) 5638676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto{ 5648676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto return sys_fadvise64_64(fd, 5658676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto merge_64(a2, a3), merge_64(a4, a5), 5668676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto flags); 5678676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto} 5688676d2e0244cbef294c7d9ad6e50048f9dfba9e0Atsushi Nemoto 5694dc467756e77838c592a6dc797434f11761d33f5Ralf Baechleasmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, 5704dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle unsigned offset_a3, unsigned len_a4, unsigned len_a5) 5714dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle{ 5724dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), 5734dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle merge_64(len_a4, len_a5)); 5744dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle} 5754dc467756e77838c592a6dc797434f11761d33f5Ralf Baechle 5763c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechlesave_static_function(sys32_clone); 577f5dbeaf5ed3938beea8e58ee473982a4bcadc172David Rientjesstatic int noinline __used 5783c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle_sys32_clone(nabi_no_regargs struct pt_regs regs) 5793c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle{ 5803c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle unsigned long clone_flags; 5813c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle unsigned long newsp; 5823c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle int __user *parent_tidptr, *child_tidptr; 5833c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle 5843c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle clone_flags = regs.regs[4]; 5853c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle newsp = regs.regs[5]; 5863c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle if (!newsp) 5873c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle newsp = regs.regs[29]; 588219ac73a7ad17a3ae3d5c07b4fc8c280645a073aAtsushi Nemoto parent_tidptr = (int __user *) regs.regs[6]; 5893c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle 5903c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle /* Use __dummy4 instead of getting it off the stack, so that 5913c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle syscall() works. */ 5923c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle child_tidptr = (int __user *) __dummy4; 5933c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle return do_fork(clone_flags, newsp, ®s, 0, 5943c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle parent_tidptr, child_tidptr); 5953c37026d43c47bec4710cbda286f4a17f416f5e6Ralf Baechle} 596