diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/x86/ia32/sys_ia32.c')
-rw-r--r-- | ANDROID_3.4.5/arch/x86/ia32/sys_ia32.c | 516 |
1 files changed, 0 insertions, 516 deletions
diff --git a/ANDROID_3.4.5/arch/x86/ia32/sys_ia32.c b/ANDROID_3.4.5/arch/x86/ia32/sys_ia32.c deleted file mode 100644 index aec2202a..00000000 --- a/ANDROID_3.4.5/arch/x86/ia32/sys_ia32.c +++ /dev/null @@ -1,516 +0,0 @@ -/* - * sys_ia32.c: Conversion between 32bit and 64bit native syscalls. Based on - * sys_sparc32 - * - * Copyright (C) 2000 VA Linux Co - * Copyright (C) 2000 Don Dugger <n0ano@valinux.com> - * Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com> - * Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz) - * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu) - * Copyright (C) 2000 Hewlett-Packard Co. - * Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com> - * Copyright (C) 2000,2001,2002 Andi Kleen, SuSE Labs (x86-64 port) - * - * These routines maintain argument size conversion between 32bit and 64bit - * environment. In 2.5 most of this should be moved to a generic directory. - * - * This file assumes that there is a hole at the end of user address space. - * - * Some of the functions are LE specific currently. These are - * hopefully all marked. This should be fixed. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/signal.h> -#include <linux/syscalls.h> -#include <linux/times.h> -#include <linux/utsname.h> -#include <linux/mm.h> -#include <linux/uio.h> -#include <linux/poll.h> -#include <linux/personality.h> -#include <linux/stat.h> -#include <linux/rwsem.h> -#include <linux/compat.h> -#include <linux/vfs.h> -#include <linux/ptrace.h> -#include <linux/highuid.h> -#include <linux/sysctl.h> -#include <linux/slab.h> -#include <asm/mman.h> -#include <asm/types.h> -#include <asm/uaccess.h> -#include <linux/atomic.h> -#include <asm/vgtod.h> -#include <asm/sys_ia32.h> - -#define AA(__x) ((unsigned long)(__x)) - - -asmlinkage long sys32_truncate64(const char __user *filename, - unsigned long offset_low, - unsigned long offset_high) -{ - return sys_truncate(filename, ((loff_t) offset_high << 32) | offset_low); -} - -asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low, - unsigned long offset_high) -{ - return sys_ftruncate(fd, ((loff_t) offset_high << 32) | offset_low); -} - -/* - * Another set for IA32/LFS -- x86_64 struct stat is different due to - * support for 64bit inode numbers. - */ -static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat) -{ - typeof(ubuf->st_uid) uid = 0; - typeof(ubuf->st_gid) gid = 0; - SET_UID(uid, stat->uid); - SET_GID(gid, stat->gid); - if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) || - __put_user(huge_encode_dev(stat->dev), &ubuf->st_dev) || - __put_user(stat->ino, &ubuf->__st_ino) || - __put_user(stat->ino, &ubuf->st_ino) || - __put_user(stat->mode, &ubuf->st_mode) || - __put_user(stat->nlink, &ubuf->st_nlink) || - __put_user(uid, &ubuf->st_uid) || - __put_user(gid, &ubuf->st_gid) || - __put_user(huge_encode_dev(stat->rdev), &ubuf->st_rdev) || - __put_user(stat->size, &ubuf->st_size) || - __put_user(stat->atime.tv_sec, &ubuf->st_atime) || - __put_user(stat->atime.tv_nsec, &ubuf->st_atime_nsec) || - __put_user(stat->mtime.tv_sec, &ubuf->st_mtime) || - __put_user(stat->mtime.tv_nsec, &ubuf->st_mtime_nsec) || - __put_user(stat->ctime.tv_sec, &ubuf->st_ctime) || - __put_user(stat->ctime.tv_nsec, &ubuf->st_ctime_nsec) || - __put_user(stat->blksize, &ubuf->st_blksize) || - __put_user(stat->blocks, &ubuf->st_blocks)) - return -EFAULT; - return 0; -} - -asmlinkage long sys32_stat64(const char __user *filename, - struct stat64 __user *statbuf) -{ - struct kstat stat; - int ret = vfs_stat(filename, &stat); - - if (!ret) - ret = cp_stat64(statbuf, &stat); - return ret; -} - -asmlinkage long sys32_lstat64(const char __user *filename, - struct stat64 __user *statbuf) -{ - struct kstat stat; - int ret = vfs_lstat(filename, &stat); - if (!ret) - ret = cp_stat64(statbuf, &stat); - return ret; -} - -asmlinkage long sys32_fstat64(unsigned int fd, struct stat64 __user *statbuf) -{ - struct kstat stat; - int ret = vfs_fstat(fd, &stat); - if (!ret) - ret = cp_stat64(statbuf, &stat); - return ret; -} - -asmlinkage long sys32_fstatat(unsigned int dfd, const char __user *filename, - struct stat64 __user *statbuf, int flag) -{ - struct kstat stat; - int error; - - error = vfs_fstatat(dfd, filename, &stat, flag); - if (error) - return error; - return cp_stat64(statbuf, &stat); -} - -/* - * Linux/i386 didn't use to be able to handle more than - * 4 system call parameters, so these system calls used a memory - * block for parameter passing.. - */ - -struct mmap_arg_struct32 { - unsigned int addr; - unsigned int len; - unsigned int prot; - unsigned int flags; - unsigned int fd; - unsigned int offset; -}; - -asmlinkage long sys32_mmap(struct mmap_arg_struct32 __user *arg) -{ - struct mmap_arg_struct32 a; - - if (copy_from_user(&a, arg, sizeof(a))) - return -EFAULT; - - if (a.offset & ~PAGE_MASK) - return -EINVAL; - - return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, - a.offset>>PAGE_SHIFT); -} - -asmlinkage long sys32_mprotect(unsigned long start, size_t len, - unsigned long prot) -{ - return sys_mprotect(start, len, prot); -} - -asmlinkage long sys32_rt_sigaction(int sig, struct sigaction32 __user *act, - struct sigaction32 __user *oact, - unsigned int sigsetsize) -{ - struct k_sigaction new_ka, old_ka; - int ret; - compat_sigset_t set32; - - /* XXX: Don't preclude handling different sized sigset_t's. */ - if (sigsetsize != sizeof(compat_sigset_t)) - return -EINVAL; - - if (act) { - compat_uptr_t handler, restorer; - - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(restorer, &act->sa_restorer) || - __copy_from_user(&set32, &act->sa_mask, - sizeof(compat_sigset_t))) - return -EFAULT; - new_ka.sa.sa_handler = compat_ptr(handler); - new_ka.sa.sa_restorer = compat_ptr(restorer); - - /* - * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= - * than _NSIG_WORDS << 1 - */ - switch (_NSIG_WORDS) { - case 4: new_ka.sa.sa_mask.sig[3] = set32.sig[6] - | (((long)set32.sig[7]) << 32); - case 3: new_ka.sa.sa_mask.sig[2] = set32.sig[4] - | (((long)set32.sig[5]) << 32); - case 2: new_ka.sa.sa_mask.sig[1] = set32.sig[2] - | (((long)set32.sig[3]) << 32); - case 1: new_ka.sa.sa_mask.sig[0] = set32.sig[0] - | (((long)set32.sig[1]) << 32); - } - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - /* - * FIXME: here we rely on _COMPAT_NSIG_WORS to be >= - * than _NSIG_WORDS << 1 - */ - switch (_NSIG_WORDS) { - case 4: - set32.sig[7] = (old_ka.sa.sa_mask.sig[3] >> 32); - set32.sig[6] = old_ka.sa.sa_mask.sig[3]; - case 3: - set32.sig[5] = (old_ka.sa.sa_mask.sig[2] >> 32); - set32.sig[4] = old_ka.sa.sa_mask.sig[2]; - case 2: - set32.sig[3] = (old_ka.sa.sa_mask.sig[1] >> 32); - set32.sig[2] = old_ka.sa.sa_mask.sig[1]; - case 1: - set32.sig[1] = (old_ka.sa.sa_mask.sig[0] >> 32); - set32.sig[0] = old_ka.sa.sa_mask.sig[0]; - } - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(ptr_to_compat(old_ka.sa.sa_handler), - &oact->sa_handler) || - __put_user(ptr_to_compat(old_ka.sa.sa_restorer), - &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __copy_to_user(&oact->sa_mask, &set32, - sizeof(compat_sigset_t))) - return -EFAULT; - } - - return ret; -} - -asmlinkage long sys32_sigaction(int sig, struct old_sigaction32 __user *act, - struct old_sigaction32 __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - compat_old_sigset_t mask; - compat_uptr_t handler, restorer; - - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(restorer, &act->sa_restorer) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - - new_ka.sa.sa_handler = compat_ptr(handler); - new_ka.sa.sa_restorer = compat_ptr(restorer); - - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(ptr_to_compat(old_ka.sa.sa_handler), - &oact->sa_handler) || - __put_user(ptr_to_compat(old_ka.sa.sa_restorer), - &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -asmlinkage long sys32_alarm(unsigned int seconds) -{ - return alarm_setitimer(seconds); -} - -asmlinkage long sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, - int options) -{ - return compat_sys_wait4(pid, stat_addr, options, NULL); -} - -/* 32-bit timeval and related flotsam. */ - -asmlinkage long sys32_sysfs(int option, u32 arg1, u32 arg2) -{ - return sys_sysfs(option, arg1, arg2); -} - -asmlinkage long sys32_sched_rr_get_interval(compat_pid_t pid, - struct compat_timespec __user *interval) -{ - struct timespec t; - int ret; - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); - ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t); - set_fs(old_fs); - if (put_compat_timespec(&t, interval)) - return -EFAULT; - return ret; -} - -asmlinkage long sys32_rt_sigpending(compat_sigset_t __user *set, - compat_size_t sigsetsize) -{ - sigset_t s; - compat_sigset_t s32; - int ret; - mm_segment_t old_fs = get_fs(); - - set_fs(KERNEL_DS); - ret = sys_rt_sigpending((sigset_t __user *)&s, sigsetsize); - set_fs(old_fs); - if (!ret) { - switch (_NSIG_WORDS) { - case 4: s32.sig[7] = (s.sig[3] >> 32); s32.sig[6] = s.sig[3]; - case 3: s32.sig[5] = (s.sig[2] >> 32); s32.sig[4] = s.sig[2]; - case 2: s32.sig[3] = (s.sig[1] >> 32); s32.sig[2] = s.sig[1]; - case 1: s32.sig[1] = (s.sig[0] >> 32); s32.sig[0] = s.sig[0]; - } - if (copy_to_user(set, &s32, sizeof(compat_sigset_t))) - return -EFAULT; - } - return ret; -} - -asmlinkage long sys32_rt_sigqueueinfo(int pid, int sig, - compat_siginfo_t __user *uinfo) -{ - siginfo_t info; - int ret; - mm_segment_t old_fs = get_fs(); - - if (copy_siginfo_from_user32(&info, uinfo)) - return -EFAULT; - set_fs(KERNEL_DS); - ret = sys_rt_sigqueueinfo(pid, sig, (siginfo_t __user *)&info); - set_fs(old_fs); - return ret; -} - -/* warning: next two assume little endian */ -asmlinkage long sys32_pread(unsigned int fd, char __user *ubuf, u32 count, - u32 poslo, u32 poshi) -{ - return sys_pread64(fd, ubuf, count, - ((loff_t)AA(poshi) << 32) | AA(poslo)); -} - -asmlinkage long sys32_pwrite(unsigned int fd, const char __user *ubuf, - u32 count, u32 poslo, u32 poshi) -{ - return sys_pwrite64(fd, ubuf, count, - ((loff_t)AA(poshi) << 32) | AA(poslo)); -} - - -asmlinkage long sys32_personality(unsigned long personality) -{ - int ret; - - if (personality(current->personality) == PER_LINUX32 && - personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - return ret; -} - -asmlinkage long sys32_sendfile(int out_fd, int in_fd, - compat_off_t __user *offset, s32 count) -{ - mm_segment_t old_fs = get_fs(); - int ret; - off_t of; - - if (offset && get_user(of, offset)) - return -EFAULT; - - set_fs(KERNEL_DS); - ret = sys_sendfile(out_fd, in_fd, offset ? (off_t __user *)&of : NULL, - count); - set_fs(old_fs); - - if (offset && put_user(of, offset)) - return -EFAULT; - return ret; -} - -asmlinkage long sys32_execve(const char __user *name, compat_uptr_t __user *argv, - compat_uptr_t __user *envp, struct pt_regs *regs) -{ - long error; - char *filename; - - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - return error; - error = compat_do_execve(filename, argv, envp, regs); - putname(filename); - return error; -} - -asmlinkage long sys32_clone(unsigned int clone_flags, unsigned int newsp, - struct pt_regs *regs) -{ - void __user *parent_tid = (void __user *)regs->dx; - void __user *child_tid = (void __user *)regs->di; - - if (!newsp) - newsp = regs->sp; - return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); -} - -/* - * Some system calls that need sign extended arguments. This could be - * done by a generic wrapper. - */ -long sys32_lseek(unsigned int fd, int offset, unsigned int whence) -{ - return sys_lseek(fd, offset, whence); -} - -long sys32_kill(int pid, int sig) -{ - return sys_kill(pid, sig); -} - -long sys32_fadvise64_64(int fd, __u32 offset_low, __u32 offset_high, - __u32 len_low, __u32 len_high, int advice) -{ - return sys_fadvise64_64(fd, - (((u64)offset_high)<<32) | offset_low, - (((u64)len_high)<<32) | len_low, - advice); -} - -long sys32_vm86_warning(void) -{ - struct task_struct *me = current; - static char lastcomm[sizeof(me->comm)]; - - if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) { - compat_printk(KERN_INFO - "%s: vm86 mode not supported on 64 bit kernel\n", - me->comm); - strncpy(lastcomm, me->comm, sizeof(lastcomm)); - } - return -ENOSYS; -} - -long sys32_lookup_dcookie(u32 addr_low, u32 addr_high, - char __user *buf, size_t len) -{ - return sys_lookup_dcookie(((u64)addr_high << 32) | addr_low, buf, len); -} - -asmlinkage ssize_t sys32_readahead(int fd, unsigned off_lo, unsigned off_hi, - size_t count) -{ - return sys_readahead(fd, ((u64)off_hi << 32) | off_lo, count); -} - -asmlinkage long sys32_sync_file_range(int fd, unsigned off_low, unsigned off_hi, - unsigned n_low, unsigned n_hi, int flags) -{ - return sys_sync_file_range(fd, - ((u64)off_hi << 32) | off_low, - ((u64)n_hi << 32) | n_low, flags); -} - -asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi, - size_t len, int advice) -{ - return sys_fadvise64_64(fd, ((u64)offset_hi << 32) | offset_lo, - len, advice); -} - -asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo, - unsigned offset_hi, unsigned len_lo, - unsigned len_hi) -{ - return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, - ((u64)len_hi << 32) | len_lo); -} - -asmlinkage long sys32_fanotify_mark(int fanotify_fd, unsigned int flags, - u32 mask_lo, u32 mask_hi, - int fd, const char __user *pathname) -{ - return sys_fanotify_mark(fanotify_fd, flags, - ((u64)mask_hi << 32) | mask_lo, - fd, pathname); -} |