Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c
new file mode 100644
index 0000000..68a9ab0
--- /dev/null
+++ b/arch/x86_64/ia32/sys_ia32.c
@@ -0,0 +1,1050 @@
+/*
+ * 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/config.h>
+#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/resource.h>
+#include <linux/times.h>
+#include <linux/utsname.h>
+#include <linux/timex.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/mm.h>
+#include <linux/shm.h>
+#include <linux/slab.h>
+#include <linux/uio.h>
+#include <linux/nfs_fs.h>
+#include <linux/quota.h>
+#include <linux/module.h>
+#include <linux/sunrpc/svc.h>
+#include <linux/nfsd/nfsd.h>
+#include <linux/nfsd/cache.h>
+#include <linux/nfsd/xdr.h>
+#include <linux/nfsd/syscall.h>
+#include <linux/poll.h>
+#include <linux/personality.h>
+#include <linux/stat.h>
+#include <linux/ipc.h>
+#include <linux/rwsem.h>
+#include <linux/binfmts.h>
+#include <linux/init.h>
+#include <linux/aio_abi.h>
+#include <linux/aio.h>
+#include <linux/compat.h>
+#include <linux/vfs.h>
+#include <linux/ptrace.h>
+#include <linux/highuid.h>
+#include <linux/vmalloc.h>
+#include <asm/mman.h>
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/atomic.h>
+#include <asm/ldt.h>
+
+#include <net/scm.h>
+#include <net/sock.h>
+#include <asm/ia32.h>
+
+#define AA(__x) ((unsigned long)(__x))
+
+int cp_compat_stat(struct kstat *kbuf, struct compat_stat __user *ubuf)
+{
+ typeof(ubuf->st_uid) uid = 0;
+ typeof(ubuf->st_gid) gid = 0;
+ SET_UID(uid, kbuf->uid);
+ SET_GID(gid, kbuf->gid);
+ if (!old_valid_dev(kbuf->dev) || !old_valid_dev(kbuf->rdev))
+ return -EOVERFLOW;
+ if (kbuf->size >= 0x7fffffff)
+ return -EOVERFLOW;
+ if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct compat_stat)) ||
+ __put_user (old_encode_dev(kbuf->dev), &ubuf->st_dev) ||
+ __put_user (kbuf->ino, &ubuf->st_ino) ||
+ __put_user (kbuf->mode, &ubuf->st_mode) ||
+ __put_user (kbuf->nlink, &ubuf->st_nlink) ||
+ __put_user (uid, &ubuf->st_uid) ||
+ __put_user (gid, &ubuf->st_gid) ||
+ __put_user (old_encode_dev(kbuf->rdev), &ubuf->st_rdev) ||
+ __put_user (kbuf->size, &ubuf->st_size) ||
+ __put_user (kbuf->atime.tv_sec, &ubuf->st_atime) ||
+ __put_user (kbuf->atime.tv_nsec, &ubuf->st_atime_nsec) ||
+ __put_user (kbuf->mtime.tv_sec, &ubuf->st_mtime) ||
+ __put_user (kbuf->mtime.tv_nsec, &ubuf->st_mtime_nsec) ||
+ __put_user (kbuf->ctime.tv_sec, &ubuf->st_ctime) ||
+ __put_user (kbuf->ctime.tv_nsec, &ubuf->st_ctime_nsec) ||
+ __put_user (kbuf->blksize, &ubuf->st_blksize) ||
+ __put_user (kbuf->blocks, &ubuf->st_blocks))
+ return -EFAULT;
+ return 0;
+}
+
+asmlinkage long
+sys32_truncate64(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(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(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;
+}
+
+/*
+ * 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_struct {
+ 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_struct __user *arg)
+{
+ struct mmap_arg_struct a;
+ struct file *file = NULL;
+ unsigned long retval;
+ struct mm_struct *mm ;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ return -EFAULT;
+
+ if (a.offset & ~PAGE_MASK)
+ return -EINVAL;
+
+ if (!(a.flags & MAP_ANONYMOUS)) {
+ file = fget(a.fd);
+ if (!file)
+ return -EBADF;
+ }
+
+ mm = current->mm;
+ down_write(&mm->mmap_sem);
+ retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, a.offset>>PAGE_SHIFT);
+ if (file)
+ fput(file);
+
+ up_write(&mm->mmap_sem);
+
+ return retval;
+}
+
+asmlinkage long
+sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
+{
+ return sys_mprotect(start,len,prot);
+}
+
+asmlinkage long
+sys32_pipe(int __user *fd)
+{
+ int retval;
+ int fds[2];
+
+ retval = do_pipe(fds);
+ if (retval)
+ goto out;
+ if (copy_to_user(fd, fds, sizeof(fds)))
+ retval = -EFAULT;
+ out:
+ return retval;
+}
+
+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_rt_sigprocmask(int how, compat_sigset_t __user *set,
+ compat_sigset_t __user *oset, unsigned int sigsetsize)
+{
+ sigset_t s;
+ compat_sigset_t s32;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (set) {
+ if (copy_from_user (&s32, set, sizeof(compat_sigset_t)))
+ return -EFAULT;
+ switch (_NSIG_WORDS) {
+ case 4: s.sig[3] = s32.sig[6] | (((long)s32.sig[7]) << 32);
+ case 3: s.sig[2] = s32.sig[4] | (((long)s32.sig[5]) << 32);
+ case 2: s.sig[1] = s32.sig[2] | (((long)s32.sig[3]) << 32);
+ case 1: s.sig[0] = s32.sig[0] | (((long)s32.sig[1]) << 32);
+ }
+ }
+ set_fs (KERNEL_DS);
+ ret = sys_rt_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL,
+ sigsetsize);
+ set_fs (old_fs);
+ if (ret) return ret;
+ if (oset) {
+ 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 (oset, &s32, sizeof(compat_sigset_t)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+static inline long
+get_tv32(struct timeval *o, struct compat_timeval __user *i)
+{
+ int err = -EFAULT;
+ if (access_ok(VERIFY_READ, i, sizeof(*i))) {
+ err = __get_user(o->tv_sec, &i->tv_sec);
+ err |= __get_user(o->tv_usec, &i->tv_usec);
+ }
+ return err;
+}
+
+static inline long
+put_tv32(struct compat_timeval __user *o, struct timeval *i)
+{
+ int err = -EFAULT;
+ if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
+ err = __put_user(i->tv_sec, &o->tv_sec);
+ err |= __put_user(i->tv_usec, &o->tv_usec);
+ }
+ return err;
+}
+
+extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
+
+asmlinkage long
+sys32_alarm(unsigned int seconds)
+{
+ struct itimerval it_new, it_old;
+ unsigned int oldalarm;
+
+ it_new.it_interval.tv_sec = it_new.it_interval.tv_usec = 0;
+ it_new.it_value.tv_sec = seconds;
+ it_new.it_value.tv_usec = 0;
+ do_setitimer(ITIMER_REAL, &it_new, &it_old);
+ oldalarm = it_old.it_value.tv_sec;
+ /* ehhh.. We can't return 0 if we have an alarm pending.. */
+ /* And we'd better return too much than too little anyway */
+ if (it_old.it_value.tv_usec)
+ oldalarm++;
+ return oldalarm;
+}
+
+/* Translations due to time_t size differences. Which affects all
+ sorts of things, like timeval and itimerval. */
+
+extern struct timezone sys_tz;
+
+asmlinkage long
+sys32_gettimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
+{
+ if (tv) {
+ struct timeval ktv;
+ do_gettimeofday(&ktv);
+ if (put_tv32(tv, &ktv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_to_user(tz, &sys_tz, sizeof(sys_tz)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+asmlinkage long
+sys32_settimeofday(struct compat_timeval __user *tv, struct timezone __user *tz)
+{
+ struct timeval ktv;
+ struct timespec kts;
+ struct timezone ktz;
+
+ if (tv) {
+ if (get_tv32(&ktv, tv))
+ return -EFAULT;
+ kts.tv_sec = ktv.tv_sec;
+ kts.tv_nsec = ktv.tv_usec * NSEC_PER_USEC;
+ }
+ if (tz) {
+ if (copy_from_user(&ktz, tz, sizeof(ktz)))
+ return -EFAULT;
+ }
+
+ return do_sys_settimeofday(tv ? &kts : NULL, tz ? &ktz : NULL);
+}
+
+struct sel_arg_struct {
+ unsigned int n;
+ unsigned int inp;
+ unsigned int outp;
+ unsigned int exp;
+ unsigned int tvp;
+};
+
+asmlinkage long
+sys32_old_select(struct sel_arg_struct __user *arg)
+{
+ struct sel_arg_struct a;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ return -EFAULT;
+ return compat_sys_select(a.n, compat_ptr(a.inp), compat_ptr(a.outp),
+ compat_ptr(a.exp), compat_ptr(a.tvp));
+}
+
+extern asmlinkage long
+compat_sys_wait4(compat_pid_t pid, compat_uint_t * stat_addr, int options,
+ struct compat_rusage *ru);
+
+asmlinkage long
+sys32_waitpid(compat_pid_t pid, unsigned int *stat_addr, int options)
+{
+ return compat_sys_wait4(pid, stat_addr, options, NULL);
+}
+
+int sys32_ni_syscall(int call)
+{
+ struct task_struct *me = current;
+ static char lastcomm[sizeof(me->comm)];
+
+ if (strncmp(lastcomm, me->comm, sizeof(lastcomm))) {
+ printk(KERN_INFO "IA32 syscall %d from %s not implemented\n",
+ call, me->comm);
+ strncpy(lastcomm, me->comm, sizeof(lastcomm));
+ }
+ return -ENOSYS;
+}
+
+/* 32-bit timeval and related flotsam. */
+
+asmlinkage long
+sys32_sysfs(int option, u32 arg1, u32 arg2)
+{
+ return sys_sysfs(option, arg1, arg2);
+}
+
+struct sysinfo32 {
+ s32 uptime;
+ u32 loads[3];
+ u32 totalram;
+ u32 freeram;
+ u32 sharedram;
+ u32 bufferram;
+ u32 totalswap;
+ u32 freeswap;
+ unsigned short procs;
+ unsigned short pad;
+ u32 totalhigh;
+ u32 freehigh;
+ u32 mem_unit;
+ char _f[20-2*sizeof(u32)-sizeof(int)];
+};
+
+asmlinkage long
+sys32_sysinfo(struct sysinfo32 __user *info)
+{
+ struct sysinfo s;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+ int bitcount = 0;
+
+ set_fs (KERNEL_DS);
+ ret = sys_sysinfo(&s);
+ set_fs (old_fs);
+
+ /* Check to see if any memory value is too large for 32-bit and scale
+ * down if needed
+ */
+ if ((s.totalram >> 32) || (s.totalswap >> 32)) {
+ while (s.mem_unit < PAGE_SIZE) {
+ s.mem_unit <<= 1;
+ bitcount++;
+ }
+ s.totalram >>= bitcount;
+ s.freeram >>= bitcount;
+ s.sharedram >>= bitcount;
+ s.bufferram >>= bitcount;
+ s.totalswap >>= bitcount;
+ s.freeswap >>= bitcount;
+ s.totalhigh >>= bitcount;
+ s.freehigh >>= bitcount;
+ }
+
+ if (!access_ok(VERIFY_WRITE, info, sizeof(struct sysinfo32)) ||
+ __put_user (s.uptime, &info->uptime) ||
+ __put_user (s.loads[0], &info->loads[0]) ||
+ __put_user (s.loads[1], &info->loads[1]) ||
+ __put_user (s.loads[2], &info->loads[2]) ||
+ __put_user (s.totalram, &info->totalram) ||
+ __put_user (s.freeram, &info->freeram) ||
+ __put_user (s.sharedram, &info->sharedram) ||
+ __put_user (s.bufferram, &info->bufferram) ||
+ __put_user (s.totalswap, &info->totalswap) ||
+ __put_user (s.freeswap, &info->freeswap) ||
+ __put_user (s.procs, &info->procs) ||
+ __put_user (s.totalhigh, &info->totalhigh) ||
+ __put_user (s.freehigh, &info->freehigh) ||
+ __put_user (s.mem_unit, &info->mem_unit))
+ return -EFAULT;
+ return 0;
+}
+
+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, &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(&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, &info);
+ set_fs (old_fs);
+ return ret;
+}
+
+/* These are here just in case some old ia32 binary calls it. */
+asmlinkage long
+sys32_pause(void)
+{
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+ return -ERESTARTNOHAND;
+}
+
+
+#ifdef CONFIG_SYSCTL
+struct sysctl_ia32 {
+ unsigned int name;
+ int nlen;
+ unsigned int oldval;
+ unsigned int oldlenp;
+ unsigned int newval;
+ unsigned int newlen;
+ unsigned int __unused[4];
+};
+
+
+asmlinkage long
+sys32_sysctl(struct sysctl_ia32 __user *args32)
+{
+ struct sysctl_ia32 a32;
+ mm_segment_t old_fs = get_fs ();
+ void __user *oldvalp, *newvalp;
+ size_t oldlen;
+ int __user *namep;
+ long ret;
+ extern int do_sysctl(int *name, int nlen, void *oldval, size_t *oldlenp,
+ void *newval, size_t newlen);
+
+
+ if (copy_from_user(&a32, args32, sizeof (a32)))
+ return -EFAULT;
+
+ /*
+ * We need to pre-validate these because we have to disable address checking
+ * before calling do_sysctl() because of OLDLEN but we can't run the risk of the
+ * user specifying bad addresses here. Well, since we're dealing with 32 bit
+ * addresses, we KNOW that access_ok() will always succeed, so this is an
+ * expensive NOP, but so what...
+ */
+ namep = compat_ptr(a32.name);
+ oldvalp = compat_ptr(a32.oldval);
+ newvalp = compat_ptr(a32.newval);
+
+ if ((oldvalp && get_user(oldlen, (int __user *)compat_ptr(a32.oldlenp)))
+ || !access_ok(VERIFY_WRITE, namep, 0)
+ || !access_ok(VERIFY_WRITE, oldvalp, 0)
+ || !access_ok(VERIFY_WRITE, newvalp, 0))
+ return -EFAULT;
+
+ set_fs(KERNEL_DS);
+ lock_kernel();
+ ret = do_sysctl(namep, a32.nlen, oldvalp, &oldlen, newvalp, (size_t) a32.newlen);
+ unlock_kernel();
+ set_fs(old_fs);
+
+ if (oldvalp && put_user (oldlen, (int __user *)compat_ptr(a32.oldlenp)))
+ return -EFAULT;
+
+ return ret;
+}
+#endif
+
+/* 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, 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 ? &of : NULL, count);
+ set_fs(old_fs);
+
+ if (!ret && offset && put_user(of, offset))
+ return -EFAULT;
+
+ return ret;
+}
+
+/* Handle adjtimex compatibility. */
+
+struct timex32 {
+ u32 modes;
+ s32 offset, freq, maxerror, esterror;
+ s32 status, constant, precision, tolerance;
+ struct compat_timeval time;
+ s32 tick;
+ s32 ppsfreq, jitter, shift, stabil;
+ s32 jitcnt, calcnt, errcnt, stbcnt;
+ s32 :32; s32 :32; s32 :32; s32 :32;
+ s32 :32; s32 :32; s32 :32; s32 :32;
+ s32 :32; s32 :32; s32 :32; s32 :32;
+};
+
+extern int do_adjtimex(struct timex *);
+
+asmlinkage long
+sys32_adjtimex(struct timex32 __user *utp)
+{
+ struct timex txc;
+ int ret;
+
+ memset(&txc, 0, sizeof(struct timex));
+
+ if (!access_ok(VERIFY_READ, utp, sizeof(struct timex32)) ||
+ __get_user(txc.modes, &utp->modes) ||
+ __get_user(txc.offset, &utp->offset) ||
+ __get_user(txc.freq, &utp->freq) ||
+ __get_user(txc.maxerror, &utp->maxerror) ||
+ __get_user(txc.esterror, &utp->esterror) ||
+ __get_user(txc.status, &utp->status) ||
+ __get_user(txc.constant, &utp->constant) ||
+ __get_user(txc.precision, &utp->precision) ||
+ __get_user(txc.tolerance, &utp->tolerance) ||
+ __get_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __get_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __get_user(txc.tick, &utp->tick) ||
+ __get_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __get_user(txc.jitter, &utp->jitter) ||
+ __get_user(txc.shift, &utp->shift) ||
+ __get_user(txc.stabil, &utp->stabil) ||
+ __get_user(txc.jitcnt, &utp->jitcnt) ||
+ __get_user(txc.calcnt, &utp->calcnt) ||
+ __get_user(txc.errcnt, &utp->errcnt) ||
+ __get_user(txc.stbcnt, &utp->stbcnt))
+ return -EFAULT;
+
+ ret = do_adjtimex(&txc);
+
+ if (!access_ok(VERIFY_WRITE, utp, sizeof(struct timex32)) ||
+ __put_user(txc.modes, &utp->modes) ||
+ __put_user(txc.offset, &utp->offset) ||
+ __put_user(txc.freq, &utp->freq) ||
+ __put_user(txc.maxerror, &utp->maxerror) ||
+ __put_user(txc.esterror, &utp->esterror) ||
+ __put_user(txc.status, &utp->status) ||
+ __put_user(txc.constant, &utp->constant) ||
+ __put_user(txc.precision, &utp->precision) ||
+ __put_user(txc.tolerance, &utp->tolerance) ||
+ __put_user(txc.time.tv_sec, &utp->time.tv_sec) ||
+ __put_user(txc.time.tv_usec, &utp->time.tv_usec) ||
+ __put_user(txc.tick, &utp->tick) ||
+ __put_user(txc.ppsfreq, &utp->ppsfreq) ||
+ __put_user(txc.jitter, &utp->jitter) ||
+ __put_user(txc.shift, &utp->shift) ||
+ __put_user(txc.stabil, &utp->stabil) ||
+ __put_user(txc.jitcnt, &utp->jitcnt) ||
+ __put_user(txc.calcnt, &utp->calcnt) ||
+ __put_user(txc.errcnt, &utp->errcnt) ||
+ __put_user(txc.stbcnt, &utp->stbcnt))
+ ret = -EFAULT;
+
+ return ret;
+}
+
+asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
+{
+ struct mm_struct *mm = current->mm;
+ unsigned long error;
+ struct file * file = NULL;
+
+ flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+ if (!(flags & MAP_ANONYMOUS)) {
+ file = fget(fd);
+ if (!file)
+ return -EBADF;
+ }
+
+ down_write(&mm->mmap_sem);
+ error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+ up_write(&mm->mmap_sem);
+
+ if (file)
+ fput(file);
+ return error;
+}
+
+asmlinkage long sys32_olduname(struct oldold_utsname __user * name)
+{
+ int error;
+
+ if (!name)
+ return -EFAULT;
+ if (!access_ok(VERIFY_WRITE,name,sizeof(struct oldold_utsname)))
+ return -EFAULT;
+
+ down_read(&uts_sem);
+
+ error = __copy_to_user(&name->sysname,&system_utsname.sysname,__OLD_UTS_LEN);
+ __put_user(0,name->sysname+__OLD_UTS_LEN);
+ __copy_to_user(&name->nodename,&system_utsname.nodename,__OLD_UTS_LEN);
+ __put_user(0,name->nodename+__OLD_UTS_LEN);
+ __copy_to_user(&name->release,&system_utsname.release,__OLD_UTS_LEN);
+ __put_user(0,name->release+__OLD_UTS_LEN);
+ __copy_to_user(&name->version,&system_utsname.version,__OLD_UTS_LEN);
+ __put_user(0,name->version+__OLD_UTS_LEN);
+ {
+ char *arch = "x86_64";
+ if (personality(current->personality) == PER_LINUX32)
+ arch = "i686";
+
+ __copy_to_user(&name->machine,arch,strlen(arch)+1);
+ }
+
+ up_read(&uts_sem);
+
+ error = error ? -EFAULT : 0;
+
+ return error;
+}
+
+long sys32_uname(struct old_utsname __user * name)
+{
+ int err;
+ if (!name)
+ return -EFAULT;
+ down_read(&uts_sem);
+ err=copy_to_user(name, &system_utsname, sizeof (*name));
+ up_read(&uts_sem);
+ if (personality(current->personality) == PER_LINUX32)
+ err |= copy_to_user(&name->machine, "i686", 5);
+ return err?-EFAULT:0;
+}
+
+long sys32_ustat(unsigned dev, struct ustat32 __user *u32p)
+{
+ struct ustat u;
+ mm_segment_t seg;
+ int ret;
+
+ seg = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_ustat(dev,&u);
+ set_fs(seg);
+ if (ret >= 0) {
+ if (!access_ok(VERIFY_WRITE,u32p,sizeof(struct ustat32)) ||
+ __put_user((__u32) u.f_tfree, &u32p->f_tfree) ||
+ __put_user((__u32) u.f_tinode, &u32p->f_tfree) ||
+ __copy_to_user(&u32p->f_fname, u.f_fname, sizeof(u.f_fname)) ||
+ __copy_to_user(&u32p->f_fpack, u.f_fpack, sizeof(u.f_fpack)))
+ ret = -EFAULT;
+ }
+ return ret;
+}
+
+asmlinkage long sys32_execve(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);
+ if (error == 0) {
+ task_lock(current);
+ current->ptrace &= ~PT_DTRACE;
+ task_unlock(current);
+ }
+ 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->rdx;
+ void __user *child_tid = (void __user *)regs->rdi;
+ if (!newsp)
+ newsp = regs->rsp;
+ 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);
+}
+
+asmlinkage long sys32_open(const char __user * filename, int flags, int mode)
+{
+ char * tmp;
+ int fd, error;
+
+ /* don't force O_LARGEFILE */
+ tmp = getname(filename);
+ fd = PTR_ERR(tmp);
+ if (!IS_ERR(tmp)) {
+ fd = get_unused_fd();
+ if (fd >= 0) {
+ struct file *f = filp_open(tmp, flags, mode);
+ error = PTR_ERR(f);
+ if (IS_ERR(f)) {
+ put_unused_fd(fd);
+ fd = error;
+ } else
+ fd_install(fd, f);
+ }
+ putname(tmp);
+ }
+ return fd;
+}
+
+extern asmlinkage long
+sys_timer_create(clockid_t which_clock,
+ struct sigevent __user *timer_event_spec,
+ timer_t __user * created_timer_id);
+
+long
+sys32_timer_create(u32 clock, struct compat_sigevent __user *se32, timer_t __user *timer_id)
+{
+ struct sigevent __user *p = NULL;
+ if (se32) {
+ struct sigevent se;
+ p = compat_alloc_user_space(sizeof(struct sigevent));
+ if (get_compat_sigevent(&se, se32) ||
+ copy_to_user(p, &se, sizeof(se)))
+ return -EFAULT;
+ }
+ return sys_timer_create(clock, p, timer_id);
+}
+
+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))) {
+ 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);
+}
+
+static int __init ia32_init (void)
+{
+ printk("IA32 emulation $Id: sys_ia32.c,v 1.32 2002/03/24 13:02:28 ak Exp $\n");
+ return 0;
+}
+
+__initcall(ia32_init);
+
+extern unsigned long ia32_sys_call_table[];
+EXPORT_SYMBOL(ia32_sys_call_table);