patch-2.4.20 linux-2.4.20/arch/x86_64/ia32/sys_ia32.c
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- Lines: 2528
- Date:
Thu Nov 28 15:53:12 2002
- Orig file:
linux-2.4.19/arch/x86_64/ia32/sys_ia32.c
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/arch/x86_64/ia32/sys_ia32.c linux-2.4.20/arch/x86_64/ia32/sys_ia32.c
@@ -0,0 +1,2527 @@
+/*
+ * 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 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.
+ * $Id: sys_ia32.c,v 1.42 2002/09/17 15:23:41 ak Exp $
+ */
+
+#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/utime.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/smb_fs.h>
+#include <linux/smb_mount.h>
+#include <linux/ncp_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 <asm/mman.h>
+#include <asm/types.h>
+#include <asm/uaccess.h>
+#include <asm/semaphore.h>
+#include <asm/ipc.h>
+#include <asm/atomic.h>
+
+#include <net/scm.h>
+#include <net/sock.h>
+#include <asm/ia32.h>
+
+#define A(__x) ((unsigned long)(__x))
+#define AA(__x) ((unsigned long)(__x))
+#define ROUND_UP(x,a) ((__typeof__(x))(((unsigned long)(x) + ((a) - 1)) & ~((a) - 1)))
+#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
+
+#undef high2lowuid
+#undef high2lowgid
+#undef low2highuid
+#undef low2highgid
+
+#define high2lowuid(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
+#define high2lowgid(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid)
+#define low2highuid(uid) ((uid) == (u16)-1) ? (uid_t)-1 : (uid_t)(uid)
+#define low2highgid(gid) ((gid) == (u16)-1) ? (gid_t)-1 : (gid_t)(gid)
+extern int overflowuid,overflowgid;
+
+
+static int
+putstat(struct stat32 *ubuf, struct stat *kbuf)
+{
+ if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat32)) ||
+ __put_user (kbuf->st_dev, &ubuf->st_dev) ||
+ __put_user (kbuf->st_ino, &ubuf->st_ino) ||
+ __put_user (kbuf->st_mode, &ubuf->st_mode) ||
+ __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
+ __put_user (kbuf->st_uid, &ubuf->st_uid) ||
+ __put_user (kbuf->st_gid, &ubuf->st_gid) ||
+ __put_user (kbuf->st_rdev, &ubuf->st_rdev) ||
+ __put_user (kbuf->st_size, &ubuf->st_size) ||
+ __put_user (kbuf->st_atime, &ubuf->st_atime) ||
+ __put_user (kbuf->st_mtime, &ubuf->st_mtime) ||
+ __put_user (kbuf->st_ctime, &ubuf->st_ctime) ||
+ __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
+ __put_user (kbuf->st_blocks, &ubuf->st_blocks))
+ return -EFAULT;
+ return 0;
+}
+
+extern asmlinkage long sys_newstat(char * filename, struct stat * statbuf);
+
+asmlinkage long
+sys32_newstat(char * filename, struct stat32 *statbuf)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newstat(filename, &s);
+ set_fs (old_fs);
+ if (putstat (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_newlstat(char * filename, struct stat * statbuf);
+
+asmlinkage long
+sys32_newlstat(char * filename, struct stat32 *statbuf)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newlstat(filename, &s);
+ set_fs (old_fs);
+ if (putstat (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_newfstat(unsigned int fd, struct stat * statbuf);
+
+asmlinkage long
+sys32_newfstat(unsigned int fd, struct stat32 *statbuf)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newfstat(fd, &s);
+ set_fs (old_fs);
+ if (putstat (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+/* Another set for IA32/LFS -- x86_64 struct stat is different due to
+ support for 64bit inode numbers. */
+
+static int
+putstat64(struct stat64 *ubuf, struct stat *kbuf)
+{
+ if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
+ __put_user (kbuf->st_dev, &ubuf->st_dev) ||
+ __put_user (kbuf->st_ino, &ubuf->__st_ino) ||
+ __put_user (kbuf->st_ino, &ubuf->st_ino) ||
+ __put_user (kbuf->st_mode, &ubuf->st_mode) ||
+ __put_user (kbuf->st_nlink, &ubuf->st_nlink) ||
+ __put_user (kbuf->st_uid, &ubuf->st_uid) ||
+ __put_user (kbuf->st_gid, &ubuf->st_gid) ||
+ __put_user (kbuf->st_rdev, &ubuf->st_rdev) ||
+ __put_user (kbuf->st_size, &ubuf->st_size) ||
+ __put_user (kbuf->st_atime, &ubuf->st_atime) ||
+ __put_user (kbuf->st_mtime, &ubuf->st_mtime) ||
+ __put_user (kbuf->st_ctime, &ubuf->st_ctime) ||
+ __put_user (kbuf->st_blksize, &ubuf->st_blksize) ||
+ __put_user (kbuf->st_blocks, &ubuf->st_blocks))
+ return -EFAULT;
+ return 0;
+}
+
+asmlinkage long
+sys32_stat64(char * filename, struct stat64 *statbuf)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newstat(filename, &s);
+ set_fs (old_fs);
+ if (putstat64 (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+asmlinkage long
+sys32_lstat64(char * filename, struct stat64 *statbuf)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newlstat(filename, &s);
+ set_fs (old_fs);
+ if (putstat64 (statbuf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+asmlinkage long
+sys32_fstat64(unsigned int fd, struct stat64 *statbuf)
+{
+ int ret;
+ struct stat s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_newfstat(fd, &s);
+ set_fs (old_fs);
+ if (putstat64 (statbuf, &s))
+ return -EFAULT;
+ 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 __u32
+sys32_mmap(struct mmap_arg_struct *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;
+ }
+ if (a.prot & PROT_READ)
+ a.prot |= PROT_EXEC;
+
+ a.flags |= MAP_32BIT;
+
+ 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);
+
+ /* Should not happen */
+ if (retval >= 0xFFFFFFFF && (long)retval > 0) {
+ do_munmap(mm, retval, a.len);
+ retval = -ENOMEM;
+ }
+ up_write(&mm->mmap_sem);
+
+ return retval;
+}
+
+extern asmlinkage long sys_mprotect(unsigned long start,size_t len,unsigned long prot);
+
+asmlinkage int sys32_mprotect(unsigned long start, size_t len, unsigned long prot)
+{
+ if (prot & PROT_READ)
+ prot |= PROT_EXEC;
+ return sys_mprotect(start,len,prot);
+}
+
+asmlinkage long
+sys32_pipe(int *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 *act,
+ struct sigaction32 *oact, unsigned int sigsetsize)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+ sigset32_t set32;
+
+ /* XXX: Don't preclude handling different sized sigset_t's. */
+ if (sigsetsize != sizeof(sigset32_t))
+ return -EINVAL;
+
+ if (act) {
+ if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user((long)new_ka.sa.sa_handler, &act->sa_handler) ||
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+ __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer)||
+ __copy_from_user(&set32, &act->sa_mask, sizeof(sigset32_t)))
+ return -EFAULT;
+
+ /* FIXME: here we rely on _IA32_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 _IA32_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 (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
+ __put_user((long)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(sigset32_t)))
+ return -EFAULT;
+ }
+
+ return ret;
+}
+
+asmlinkage long
+sys32_sigaction (int sig, struct old_sigaction32 *act, struct old_sigaction32 *oact)
+{
+ struct k_sigaction new_ka, old_ka;
+ int ret;
+
+ if (act) {
+ old_sigset32_t mask;
+
+ if (verify_area(VERIFY_READ, act, sizeof(*act)) ||
+ __get_user((long)new_ka.sa.sa_handler, &act->sa_handler) ||
+ __get_user(new_ka.sa.sa_flags, &act->sa_flags) ||
+ __get_user((long)new_ka.sa.sa_restorer, &act->sa_restorer) ||
+ __get_user(mask, &act->sa_mask))
+ return -EFAULT;
+ siginitset(&new_ka.sa.sa_mask, mask);
+ }
+
+ ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL);
+
+ if (!ret && oact) {
+ if (verify_area(VERIFY_WRITE, oact, sizeof(*oact)) ||
+ __put_user((long)old_ka.sa.sa_handler, &oact->sa_handler) ||
+ __put_user((long)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;
+}
+
+extern asmlinkage long sys_rt_sigprocmask(int how, sigset_t *set, sigset_t *oset,
+ size_t sigsetsize);
+
+asmlinkage long
+sys32_rt_sigprocmask(int how, sigset32_t *set, sigset32_t *oset,
+ unsigned int sigsetsize)
+{
+ sigset_t s;
+ sigset32_t s32;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (set) {
+ if (copy_from_user (&s32, set, sizeof(sigset32_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(sigset32_t)))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+static int
+put_statfs (struct statfs32 *ubuf, struct statfs *kbuf)
+{
+ if (verify_area(VERIFY_WRITE, ubuf, sizeof(struct statfs32)) ||
+ __put_user (kbuf->f_type, &ubuf->f_type) ||
+ __put_user (kbuf->f_bsize, &ubuf->f_bsize) ||
+ __put_user (kbuf->f_blocks, &ubuf->f_blocks) ||
+ __put_user (kbuf->f_bfree, &ubuf->f_bfree) ||
+ __put_user (kbuf->f_bavail, &ubuf->f_bavail) ||
+ __put_user (kbuf->f_files, &ubuf->f_files) ||
+ __put_user (kbuf->f_ffree, &ubuf->f_ffree) ||
+ __put_user (kbuf->f_namelen, &ubuf->f_namelen) ||
+ __put_user (kbuf->f_fsid.val[0], &ubuf->f_fsid.val[0]) ||
+ __put_user (kbuf->f_fsid.val[1], &ubuf->f_fsid.val[1]))
+ return -EFAULT;
+ return 0;
+}
+
+extern asmlinkage long sys_statfs(const char * path, struct statfs * buf);
+
+asmlinkage long
+sys32_statfs(const char * path, struct statfs32 *buf)
+{
+ int ret;
+ struct statfs s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_statfs((const char *)path, &s);
+ set_fs (old_fs);
+ if (put_statfs(buf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_fstatfs(unsigned int fd, struct statfs * buf);
+
+asmlinkage long
+sys32_fstatfs(unsigned int fd, struct statfs32 *buf)
+{
+ int ret;
+ struct statfs s;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_fstatfs(fd, &s);
+ set_fs (old_fs);
+ if (put_statfs(buf, &s))
+ return -EFAULT;
+ return ret;
+}
+
+struct timeval32
+{
+ int tv_sec, tv_usec;
+};
+
+struct itimerval32
+{
+ struct timeval32 it_interval;
+ struct timeval32 it_value;
+};
+
+static inline long
+get_tv32(struct timeval *o, struct timeval32 *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 timeval32 *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;
+}
+
+static inline long
+get_it32(struct itimerval *o, struct itimerval32 *i)
+{
+ int err = -EFAULT;
+ if (access_ok(VERIFY_READ, i, sizeof(*i))) {
+ err = __get_user(o->it_interval.tv_sec, &i->it_interval.tv_sec);
+ err |= __get_user(o->it_interval.tv_usec, &i->it_interval.tv_usec);
+ err |= __get_user(o->it_value.tv_sec, &i->it_value.tv_sec);
+ err |= __get_user(o->it_value.tv_usec, &i->it_value.tv_usec);
+ }
+ return err;
+}
+
+static inline long
+put_it32(struct itimerval32 *o, struct itimerval *i)
+{
+ int err = -EFAULT;
+ if (access_ok(VERIFY_WRITE, o, sizeof(*o))) {
+ err = __put_user(i->it_interval.tv_sec, &o->it_interval.tv_sec);
+ err |= __put_user(i->it_interval.tv_usec, &o->it_interval.tv_usec);
+ err |= __put_user(i->it_value.tv_sec, &o->it_value.tv_sec);
+ err |= __put_user(i->it_value.tv_usec, &o->it_value.tv_usec);
+ }
+ return err;
+}
+
+extern int do_getitimer(int which, struct itimerval *value);
+
+asmlinkage long
+sys32_getitimer(int which, struct itimerval32 *it)
+{
+ struct itimerval kit;
+ int error;
+
+ error = do_getitimer(which, &kit);
+ if (!error && put_it32(it, &kit))
+ error = -EFAULT;
+
+ return error;
+}
+
+extern int do_setitimer(int which, struct itimerval *, struct itimerval *);
+
+asmlinkage long
+sys32_setitimer(int which, struct itimerval32 *in, struct itimerval32 *out)
+{
+ struct itimerval kin, kout;
+ int error;
+
+ if (in) {
+ if (get_it32(&kin, in))
+ return -EFAULT;
+ } else
+ memset(&kin, 0, sizeof(kin));
+
+ error = do_setitimer(which, &kin, out ? &kout : NULL);
+ if (error || !out)
+ return error;
+ if (put_it32(out, &kout))
+ return -EFAULT;
+
+ return 0;
+
+}
+asmlinkage unsigned 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. */
+
+struct utimbuf_32 {
+ int atime;
+ int mtime;
+};
+
+extern asmlinkage long sys_utimes(char * filename, struct timeval * utimes);
+extern asmlinkage long sys_gettimeofday (struct timeval *tv, struct timezone *tz);
+
+extern struct timezone sys_tz;
+extern int do_sys_settimeofday(struct timeval *tv, struct timezone *tz);
+
+asmlinkage long
+sys32_gettimeofday(struct timeval32 *tv, struct timezone *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 timeval32 *tv, struct timezone *tz)
+{
+ struct timeval ktv;
+ struct timezone ktz;
+
+ if (tv) {
+ if (get_tv32(&ktv, tv))
+ return -EFAULT;
+ }
+ if (tz) {
+ if (copy_from_user(&ktz, tz, sizeof(ktz)))
+ return -EFAULT;
+ }
+
+ return do_sys_settimeofday(tv ? &ktv : NULL, tz ? &ktz : NULL);
+}
+
+struct linux32_dirent {
+ u32 d_ino;
+ u32 d_off;
+ u16 d_reclen;
+ char d_name[1];
+};
+
+struct old_linux32_dirent {
+ u32 d_ino;
+ u32 d_offset;
+ u16 d_namlen;
+ char d_name[1];
+};
+
+struct getdents32_callback {
+ struct linux32_dirent * current_dir;
+ struct linux32_dirent * previous;
+ int count;
+ int error;
+};
+
+struct readdir32_callback {
+ struct old_linux32_dirent * dirent;
+ int count;
+};
+
+static int
+filldir32 (void *__buf, const char *name, int namlen, loff_t offset, ino_t ino,
+ unsigned int d_type)
+{
+ struct linux32_dirent * dirent;
+ struct getdents32_callback * buf = (struct getdents32_callback *) __buf;
+ int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1, 4);
+
+ buf->error = -EINVAL; /* only used if we fail.. */
+ if (reclen > buf->count)
+ return -EINVAL;
+ dirent = buf->previous;
+ if (dirent)
+ put_user(offset, &dirent->d_off);
+ dirent = buf->current_dir;
+ buf->previous = dirent;
+ put_user(ino, &dirent->d_ino);
+ put_user(reclen, &dirent->d_reclen);
+ copy_to_user(dirent->d_name, name, namlen);
+ put_user(0, dirent->d_name + namlen);
+ ((char *) dirent) += reclen;
+ buf->current_dir = dirent;
+ buf->count -= reclen;
+ return 0;
+}
+
+asmlinkage long
+sys32_getdents (unsigned int fd, void * dirent, unsigned int count)
+{
+ struct file * file;
+ struct linux32_dirent * lastdirent;
+ struct getdents32_callback buf;
+ int error;
+
+ error = -EBADF;
+ file = fget(fd);
+ if (!file)
+ goto out;
+
+ buf.current_dir = (struct linux32_dirent *) dirent;
+ buf.previous = NULL;
+ buf.count = count;
+ buf.error = 0;
+
+ error = vfs_readdir(file, filldir32, &buf);
+ if (error < 0)
+ goto out_putf;
+ error = buf.error;
+ lastdirent = buf.previous;
+ if (lastdirent) {
+ put_user(file->f_pos, &lastdirent->d_off);
+ error = count - buf.count;
+ }
+
+out_putf:
+ fput(file);
+out:
+ return error;
+}
+
+static int
+fillonedir32 (void * __buf, const char * name, int namlen, loff_t offset, ino_t ino, unsigned d_type)
+{
+ struct readdir32_callback * buf = (struct readdir32_callback *) __buf;
+ struct old_linux32_dirent * dirent;
+
+ if (buf->count)
+ return -EINVAL;
+ buf->count++;
+ dirent = buf->dirent;
+ put_user(ino, &dirent->d_ino);
+ put_user(offset, &dirent->d_offset);
+ put_user(namlen, &dirent->d_namlen);
+ copy_to_user(dirent->d_name, name, namlen);
+ put_user(0, dirent->d_name + namlen);
+ return 0;
+}
+
+asmlinkage long
+sys32_oldreaddir (unsigned int fd, void * dirent, unsigned int count)
+{
+ int error;
+ struct file * file;
+ struct readdir32_callback buf;
+
+ error = -EBADF;
+ file = fget(fd);
+ if (!file)
+ goto out;
+
+ buf.count = 0;
+ buf.dirent = dirent;
+
+ error = vfs_readdir(file, fillonedir32, &buf);
+ if (error >= 0)
+ error = buf.count;
+ fput(file);
+out:
+ return error;
+}
+
+/*
+ * We can actually return ERESTARTSYS instead of EINTR, but I'd
+ * like to be certain this leads to no problems. So I return
+ * EINTR just for safety.
+ *
+ * Update: ERESTARTSYS breaks at least the xview clock binary, so
+ * I'm trying ERESTARTNOHAND which restart only when you want to.
+ */
+#define MAX_SELECT_SECONDS \
+ ((unsigned long) (MAX_SCHEDULE_TIMEOUT / HZ)-1)
+#define ROUND_UP_TIME(x,y) (((x)+(y)-1)/(y))
+
+asmlinkage long
+sys32_select(int n, fd_set *inp, fd_set *outp, fd_set *exp, struct timeval32 *tvp32)
+{
+ fd_set_bits fds;
+ char *bits;
+ long timeout;
+ int ret, size;
+
+ timeout = MAX_SCHEDULE_TIMEOUT;
+ if (tvp32) {
+ time_t sec, usec;
+
+ get_user(sec, &tvp32->tv_sec);
+ get_user(usec, &tvp32->tv_usec);
+
+ ret = -EINVAL;
+ if (sec < 0 || usec < 0)
+ goto out_nofds;
+
+ if ((unsigned long) sec < MAX_SELECT_SECONDS) {
+ timeout = ROUND_UP_TIME(usec, 1000000/HZ);
+ timeout += sec * (unsigned long) HZ;
+ }
+ }
+
+ ret = -EINVAL;
+ if (n < 0)
+ goto out_nofds;
+
+ if (n > current->files->max_fdset)
+ n = current->files->max_fdset;
+
+ /*
+ * We need 6 bitmaps (in/out/ex for both incoming and outgoing),
+ * since we used fdset we need to allocate memory in units of
+ * long-words.
+ */
+ ret = -ENOMEM;
+ size = FDS_BYTES(n);
+ bits = kmalloc(6 * size, GFP_KERNEL);
+ if (!bits)
+ goto out_nofds;
+ fds.in = (unsigned long *) bits;
+ fds.out = (unsigned long *) (bits + size);
+ fds.ex = (unsigned long *) (bits + 2*size);
+ fds.res_in = (unsigned long *) (bits + 3*size);
+ fds.res_out = (unsigned long *) (bits + 4*size);
+ fds.res_ex = (unsigned long *) (bits + 5*size);
+
+ if ((ret = get_fd_set(n, inp, fds.in)) ||
+ (ret = get_fd_set(n, outp, fds.out)) ||
+ (ret = get_fd_set(n, exp, fds.ex)))
+ goto out;
+ zero_fd_set(n, fds.res_in);
+ zero_fd_set(n, fds.res_out);
+ zero_fd_set(n, fds.res_ex);
+
+ ret = do_select(n, &fds, &timeout);
+
+ if (tvp32 && !(current->personality & STICKY_TIMEOUTS)) {
+ time_t sec = 0, usec = 0;
+ if (timeout) {
+ sec = timeout / HZ;
+ usec = timeout % HZ;
+ usec *= (1000000/HZ);
+ }
+ put_user(sec, (int *)&tvp32->tv_sec);
+ put_user(usec, (int *)&tvp32->tv_usec);
+ }
+
+ if (ret < 0)
+ goto out;
+ if (!ret) {
+ ret = -ERESTARTNOHAND;
+ if (signal_pending(current))
+ goto out;
+ ret = 0;
+ }
+
+ set_fd_set(n, inp, fds.res_in);
+ set_fd_set(n, outp, fds.res_out);
+ set_fd_set(n, exp, fds.res_ex);
+
+out:
+ kfree(bits);
+out_nofds:
+ return ret;
+}
+
+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 *arg)
+{
+ struct sel_arg_struct a;
+
+ if (copy_from_user(&a, arg, sizeof(a)))
+ return -EFAULT;
+ return sys32_select(a.n, (fd_set *)A(a.inp), (fd_set *)A(a.outp), (fd_set *)A(a.exp),
+ (struct timeval32 *)A(a.tvp));
+}
+
+struct timespec32 {
+ int tv_sec;
+ int tv_nsec;
+};
+
+extern asmlinkage long sys_nanosleep(struct timespec *rqtp, struct timespec *rmtp);
+
+asmlinkage long
+sys32_nanosleep(struct timespec32 *rqtp, struct timespec32 *rmtp)
+{
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ if (verify_area(VERIFY_READ, rqtp, sizeof(struct timespec32)) ||
+ __get_user (t.tv_sec, &rqtp->tv_sec) ||
+ __get_user (t.tv_nsec, &rqtp->tv_nsec))
+ return -EFAULT;
+ set_fs (KERNEL_DS);
+ ret = sys_nanosleep(&t, rmtp ? &t : NULL);
+ set_fs (old_fs);
+ if (rmtp && ret == -EINTR) {
+ if (verify_area(VERIFY_WRITE, rmtp, sizeof(struct timespec32)) ||
+ __put_user (t.tv_sec, &rmtp->tv_sec) ||
+ __put_user (t.tv_nsec, &rmtp->tv_nsec))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+asmlinkage ssize_t sys_readv(unsigned long,const struct iovec *,unsigned long);
+asmlinkage ssize_t sys_writev(unsigned long,const struct iovec *,unsigned long);
+
+struct iovec *
+get_iovec32(struct iovec32 *iov32, struct iovec *iov_buf, u32 count, int type)
+{
+ int i;
+ u32 buf, len;
+ struct iovec *ivp, *iov;
+
+ /* Get the "struct iovec" from user memory */
+
+ if (!count)
+ return 0;
+ if(verify_area(VERIFY_READ, iov32, sizeof(struct iovec32)*count))
+ return(struct iovec *)0;
+ if (count > UIO_MAXIOV)
+ return(struct iovec *)0;
+ if (count > UIO_FASTIOV) {
+ iov = kmalloc(count*sizeof(struct iovec), GFP_KERNEL);
+ if (!iov)
+ return((struct iovec *)0);
+ } else
+ iov = iov_buf;
+
+ ivp = iov;
+ for (i = 0; i < count; i++) {
+ if (__get_user(len, &iov32->iov_len) ||
+ __get_user(buf, &iov32->iov_base)) {
+ if (iov != iov_buf)
+ kfree(iov);
+ return((struct iovec *)0);
+ }
+ if (verify_area(type, (void *)A(buf), len)) {
+ if (iov != iov_buf)
+ kfree(iov);
+ return((struct iovec *)0);
+ }
+ ivp->iov_base = (void *)A(buf);
+ ivp->iov_len = (__kernel_size_t)len;
+ iov32++;
+ ivp++;
+ }
+ return(iov);
+}
+
+asmlinkage long
+sys32_readv(int fd, struct iovec32 *vector, u32 count)
+{
+ struct iovec iovstack[UIO_FASTIOV];
+ struct iovec *iov;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if ((iov = get_iovec32(vector, iovstack, count, VERIFY_WRITE)) == (struct iovec *)0)
+ return -EFAULT;
+ set_fs(KERNEL_DS);
+ ret = sys_readv(fd, iov, count);
+ set_fs(old_fs);
+ if (iov != iovstack)
+ kfree(iov);
+ return ret;
+}
+
+asmlinkage long
+sys32_writev(int fd, struct iovec32 *vector, u32 count)
+{
+ struct iovec iovstack[UIO_FASTIOV];
+ struct iovec *iov;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if ((iov = get_iovec32(vector, iovstack, count, VERIFY_READ)) == (struct iovec *)0)
+ return -EFAULT;
+ set_fs(KERNEL_DS);
+ ret = sys_writev(fd, iov, count);
+ set_fs(old_fs);
+ if (iov != iovstack)
+ kfree(iov);
+ return ret;
+}
+
+#define RLIM_INFINITY32 0xffffffff
+#define RESOURCE32(x) ((x > RLIM_INFINITY32) ? RLIM_INFINITY32 : x)
+
+struct rlimit32 {
+ int rlim_cur;
+ int rlim_max;
+};
+
+extern asmlinkage long sys_getrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage long
+sys32_getrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+ struct rlimit r;
+ int ret;
+ mm_segment_t old_fs;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_getrlimit(resource, &r);
+ set_fs(old_fs);
+ if (!ret) {
+ if (verify_area(VERIFY_WRITE, rlim, sizeof(struct rlimit32)) ||
+ __put_user(RESOURCE32(r.rlim_cur), &rlim->rlim_cur) ||
+ __put_user(RESOURCE32(r.rlim_max), &rlim->rlim_max))
+ ret = -EFAULT;
+ }
+ return ret;
+}
+
+extern asmlinkage long sys_old_getrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage long
+sys32_old_getrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+ struct rlimit r;
+ int ret;
+ mm_segment_t old_fs;
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_old_getrlimit(resource, &r);
+ set_fs(old_fs);
+ if (!ret) {
+ if (verify_area(VERIFY_WRITE, rlim, sizeof(struct rlimit32)) ||
+ __put_user(r.rlim_cur, &rlim->rlim_cur) ||
+ __put_user(r.rlim_max, &rlim->rlim_max))
+ ret = -EFAULT;
+ }
+ return ret;
+}
+
+extern asmlinkage long sys_setrlimit(unsigned int resource, struct rlimit *rlim);
+
+asmlinkage long
+sys32_setrlimit(unsigned int resource, struct rlimit32 *rlim)
+{
+ struct rlimit r;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ if (resource >= RLIM_NLIMITS) return -EINVAL;
+ if (verify_area(VERIFY_READ, rlim, sizeof(struct rlimit32)) ||
+ __get_user (r.rlim_cur, &rlim->rlim_cur) ||
+ __get_user (r.rlim_max, &rlim->rlim_max))
+ return -EFAULT;
+ if (r.rlim_cur == RLIM_INFINITY32)
+ r.rlim_cur = RLIM_INFINITY;
+ if (r.rlim_max == RLIM_INFINITY32)
+ r.rlim_max = RLIM_INFINITY;
+ set_fs (KERNEL_DS);
+ ret = sys_setrlimit(resource, &r);
+ set_fs (old_fs);
+ return ret;
+}
+
+/*
+ * sys_time() can be implemented in user-level using
+ * sys_gettimeofday(). IA64 did this but i386 Linux did not
+ * so we have to implement this system call here.
+ */
+asmlinkage long sys32_time(int * tloc)
+{
+ int i;
+
+ /* SMP: This is fairly trivial. We grab CURRENT_TIME and
+ stuff it to user space. No side effects */
+ i = CURRENT_TIME;
+ if (tloc) {
+ if (put_user(i,tloc))
+ i = -EFAULT;
+ }
+ return i;
+}
+
+struct rusage32 {
+ struct timeval32 ru_utime;
+ struct timeval32 ru_stime;
+ int ru_maxrss;
+ int ru_ixrss;
+ int ru_idrss;
+ int ru_isrss;
+ int ru_minflt;
+ int ru_majflt;
+ int ru_nswap;
+ int ru_inblock;
+ int ru_oublock;
+ int ru_msgsnd;
+ int ru_msgrcv;
+ int ru_nsignals;
+ int ru_nvcsw;
+ int ru_nivcsw;
+};
+
+static int
+put_rusage (struct rusage32 *ru, struct rusage *r)
+{
+ if (verify_area(VERIFY_WRITE, ru, sizeof(struct rusage32)) ||
+ __put_user (r->ru_utime.tv_sec, &ru->ru_utime.tv_sec) ||
+ __put_user (r->ru_utime.tv_usec, &ru->ru_utime.tv_usec) ||
+ __put_user (r->ru_stime.tv_sec, &ru->ru_stime.tv_sec) ||
+ __put_user (r->ru_stime.tv_usec, &ru->ru_stime.tv_usec) ||
+ __put_user (r->ru_maxrss, &ru->ru_maxrss) ||
+ __put_user (r->ru_ixrss, &ru->ru_ixrss) ||
+ __put_user (r->ru_idrss, &ru->ru_idrss) ||
+ __put_user (r->ru_isrss, &ru->ru_isrss) ||
+ __put_user (r->ru_minflt, &ru->ru_minflt) ||
+ __put_user (r->ru_majflt, &ru->ru_majflt) ||
+ __put_user (r->ru_nswap, &ru->ru_nswap) ||
+ __put_user (r->ru_inblock, &ru->ru_inblock) ||
+ __put_user (r->ru_oublock, &ru->ru_oublock) ||
+ __put_user (r->ru_msgsnd, &ru->ru_msgsnd) ||
+ __put_user (r->ru_msgrcv, &ru->ru_msgrcv) ||
+ __put_user (r->ru_nsignals, &ru->ru_nsignals) ||
+ __put_user (r->ru_nvcsw, &ru->ru_nvcsw) ||
+ __put_user (r->ru_nivcsw, &ru->ru_nivcsw))
+ return -EFAULT;
+ return 0;
+}
+
+extern asmlinkage long sys_wait4(pid_t pid,unsigned int * stat_addr,
+ int options, struct rusage * ru);
+
+asmlinkage long
+sys32_wait4(__kernel_pid_t32 pid, unsigned int *stat_addr, int options,
+ struct rusage32 *ru)
+{
+ if (!ru)
+ return sys_wait4(pid, stat_addr, options, NULL);
+ else {
+ struct rusage r;
+ int ret;
+ unsigned int status;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_wait4(pid, stat_addr ? &status : NULL, options, &r);
+ set_fs (old_fs);
+ if (put_rusage (ru, &r)) return -EFAULT;
+ if (stat_addr && put_user (status, stat_addr))
+ return -EFAULT;
+ return ret;
+ }
+}
+
+asmlinkage long
+sys32_waitpid(__kernel_pid_t32 pid, unsigned int *stat_addr, int options)
+{
+ return sys32_wait4(pid, stat_addr, options, NULL);
+}
+
+
+extern asmlinkage long
+sys_getrusage(int who, struct rusage *ru);
+
+asmlinkage long
+sys32_getrusage(int who, struct rusage32 *ru)
+{
+ struct rusage r;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_getrusage(who, &r);
+ set_fs (old_fs);
+ if (put_rusage (ru, &r)) return -EFAULT;
+ return ret;
+}
+
+struct tms32 {
+ __kernel_clock_t32 tms_utime;
+ __kernel_clock_t32 tms_stime;
+ __kernel_clock_t32 tms_cutime;
+ __kernel_clock_t32 tms_cstime;
+};
+
+extern int sys_times(struct tms *);
+
+asmlinkage long
+sys32_times(struct tms32 *tbuf)
+{
+ struct tms t;
+ long ret;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_times(tbuf ? &t : NULL);
+ set_fs (old_fs);
+ if (tbuf) {
+ if (verify_area(VERIFY_WRITE, tbuf, sizeof(struct tms32)) ||
+ __put_user (t.tms_utime, &tbuf->tms_utime) ||
+ __put_user (t.tms_stime, &tbuf->tms_stime) ||
+ __put_user (t.tms_cutime, &tbuf->tms_cutime) ||
+ __put_user (t.tms_cstime, &tbuf->tms_cstime))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+
+static inline int get_flock(struct flock *kfl, struct flock32 *ufl)
+{
+ int err;
+
+ err = get_user(kfl->l_type, &ufl->l_type);
+ err |= __get_user(kfl->l_whence, &ufl->l_whence);
+ err |= __get_user(kfl->l_start, &ufl->l_start);
+ err |= __get_user(kfl->l_len, &ufl->l_len);
+ err |= __get_user(kfl->l_pid, &ufl->l_pid);
+ return err;
+}
+
+static inline int put_flock(struct flock *kfl, struct flock32 *ufl)
+{
+ int err;
+
+ err = __put_user(kfl->l_type, &ufl->l_type);
+ err |= __put_user(kfl->l_whence, &ufl->l_whence);
+ err |= __put_user(kfl->l_start, &ufl->l_start);
+ err |= __put_user(kfl->l_len, &ufl->l_len);
+ err |= __put_user(kfl->l_pid, &ufl->l_pid);
+ return err;
+}
+
+extern asmlinkage long sys_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg);
+asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg);
+
+
+asmlinkage long sys32_fcntl(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+ switch (cmd) {
+ case F_GETLK:
+ case F_SETLK:
+ case F_SETLKW:
+ {
+ struct flock f;
+ mm_segment_t old_fs;
+ long ret;
+
+ if (get_flock(&f, (struct flock32 *)arg))
+ return -EFAULT;
+ old_fs = get_fs(); set_fs (KERNEL_DS);
+ ret = sys_fcntl(fd, cmd, (unsigned long)&f);
+ set_fs (old_fs);
+ if (ret) return ret;
+ if (put_flock(&f, (struct flock32 *)arg))
+ return -EFAULT;
+ return 0;
+ }
+ case F_GETLK64:
+ case F_SETLK64:
+ case F_SETLKW64:
+ return sys32_fcntl64(fd,cmd,arg);
+
+ default:
+ return sys_fcntl(fd, cmd, (unsigned long)arg);
+ }
+}
+
+static inline int get_flock64(struct ia32_flock64 *fl32, struct flock *fl64)
+{
+ if (access_ok(fl32, sizeof(struct ia32_flock64), VERIFY_WRITE)) {
+ int ret = __get_user(fl64->l_type, &fl32->l_type);
+ ret |= __get_user(fl64->l_whence, &fl32->l_whence);
+ ret |= __get_user(fl64->l_start, &fl32->l_start);
+ ret |= __get_user(fl64->l_len, &fl32->l_len);
+ ret |= __get_user(fl64->l_pid, &fl32->l_pid);
+ return ret;
+ }
+ return -EFAULT;
+}
+
+static inline int put_flock64(struct ia32_flock64 *fl32, struct flock *fl64)
+{
+ if (access_ok(fl32, sizeof(struct ia32_flock64), VERIFY_WRITE)) {
+ int ret = __put_user(fl64->l_type, &fl32->l_type);
+ ret |= __put_user(fl64->l_whence, &fl32->l_whence);
+ ret |= __put_user(fl64->l_start, &fl32->l_start);
+ ret |= __put_user(fl64->l_len, &fl32->l_len);
+ ret |= __put_user(fl64->l_pid, &fl32->l_pid);
+ return ret;
+ }
+ return -EFAULT;
+}
+
+asmlinkage long sys32_fcntl64(unsigned int fd, unsigned int cmd, unsigned long arg)
+{
+ struct flock fl64;
+ mm_segment_t oldfs = get_fs();
+ int ret = 0;
+ int oldcmd = cmd;
+ unsigned long oldarg = arg;
+
+ switch (cmd) {
+ case F_GETLK64:
+ cmd = F_GETLK;
+ goto cnv;
+ case F_SETLK64:
+ cmd = F_SETLK;
+ goto cnv;
+ case F_SETLKW64:
+ cmd = F_SETLKW;
+ cnv:
+ ret = get_flock64((struct ia32_flock64 *)arg, &fl64);
+ arg = (unsigned long)&fl64;
+ set_fs(KERNEL_DS);
+ break;
+ case F_GETLK:
+ case F_SETLK:
+ case F_SETLKW:
+ return sys32_fcntl(fd,cmd,arg);
+ }
+ if (!ret)
+ ret = sys_fcntl(fd, cmd, arg);
+ set_fs(oldfs);
+ if (oldcmd == F_GETLK64 && !ret)
+ ret = put_flock64((struct ia32_flock64 *)oldarg, &fl64);
+ return ret;
+}
+
+int sys32_ni_syscall(int call)
+{
+ printk(KERN_INFO "IA32 syscall %d from %s not implemented\n", call,
+ current->comm);
+ return -ENOSYS;
+}
+
+/* 32-bit timeval and related flotsam. */
+
+extern asmlinkage long sys_utime(char * filename, struct utimbuf * times);
+
+struct utimbuf32 {
+ __kernel_time_t32 actime, modtime;
+};
+
+asmlinkage long
+sys32_utime(char * filename, struct utimbuf32 *times)
+{
+ struct utimbuf t;
+ mm_segment_t old_fs;
+ int ret;
+ char *filenam;
+
+ if (!times)
+ return sys_utime(filename, NULL);
+ if (verify_area(VERIFY_READ, times, sizeof(struct utimbuf32)) ||
+ __get_user (t.actime, ×->actime) ||
+ __get_user (t.modtime, ×->modtime))
+ return -EFAULT;
+ filenam = getname (filename);
+ ret = PTR_ERR(filenam);
+ if (!IS_ERR(filenam)) {
+ old_fs = get_fs();
+ set_fs (KERNEL_DS);
+ ret = sys_utime(filenam, &t);
+ set_fs (old_fs);
+ putname(filenam);
+ }
+ return ret;
+}
+
+extern asmlinkage long sys_sysfs(int option, unsigned long arg1,
+ unsigned long arg2);
+
+asmlinkage long
+sys32_sysfs(int option, u32 arg1, u32 arg2)
+{
+ return sys_sysfs(option, arg1, arg2);
+}
+
+extern asmlinkage long sys_mount(char * dev_name, char * dir_name, char * type,
+ unsigned long new_flags, void *data);
+
+static char *badfs[] = {
+ "smbfs", "ncpfs", NULL
+};
+
+static int checktype(char *user_type)
+{
+ int err = 0;
+ char **s,*kernel_type = getname(user_type);
+ if (!kernel_type || IS_ERR(kernel_type))
+ return -EFAULT;
+ for (s = badfs; *s; ++s)
+ if (!strcmp(kernel_type, *s)) {
+ printk(KERN_ERR "mount32: unsupported fs `%s' -- use 64bit mount\n", *s);
+ err = -EINVAL;
+ break;
+ }
+ putname(user_type);
+ return err;
+}
+
+asmlinkage long
+sys32_mount(char *dev_name, char *dir_name, char *type,
+ unsigned long new_flags, u32 data)
+{
+ int err;
+ if(!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ err = checktype(type);
+ if (err)
+ return err;
+ return sys_mount(dev_name, dir_name, type, new_flags, (void *)AA(data));
+}
+
+struct sysinfo32 {
+ s32 uptime;
+ u32 loads[3];
+ u32 totalram;
+ u32 freeram;
+ u32 sharedram;
+ u32 bufferram;
+ u32 totalswap;
+ u32 freeswap;
+ unsigned short procs;
+ char _f[22];
+};
+
+extern asmlinkage long sys_sysinfo(struct sysinfo *info);
+
+asmlinkage long
+sys32_sysinfo(struct sysinfo32 *info)
+{
+ struct sysinfo s;
+ int ret;
+ mm_segment_t old_fs = get_fs ();
+
+ set_fs (KERNEL_DS);
+ ret = sys_sysinfo(&s);
+ set_fs (old_fs);
+ if (verify_area(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))
+ return -EFAULT;
+ return 0;
+}
+
+extern asmlinkage long sys_sched_rr_get_interval(pid_t pid,
+ struct timespec *interval);
+
+asmlinkage long
+sys32_sched_rr_get_interval(__kernel_pid_t32 pid, struct timespec32 *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 (verify_area(VERIFY_WRITE, interval, sizeof(struct timespec32)) ||
+ __put_user (t.tv_sec, &interval->tv_sec) ||
+ __put_user (t.tv_nsec, &interval->tv_nsec))
+ return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_sigprocmask(int how, old_sigset_t *set,
+ old_sigset_t *oset);
+
+asmlinkage long
+sys32_sigprocmask(int how, old_sigset32_t *set, old_sigset32_t *oset)
+{
+ old_sigset_t s;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (set && get_user (s, set)) return -EFAULT;
+ set_fs (KERNEL_DS);
+ ret = sys_sigprocmask(how, set ? &s : NULL, oset ? &s : NULL);
+ set_fs (old_fs);
+ if (ret) return ret;
+ if (oset && put_user (s, oset)) return -EFAULT;
+ return 0;
+}
+
+extern asmlinkage long sys_sigpending(old_sigset_t *set);
+
+asmlinkage long
+sys32_sigpending(old_sigset32_t *set)
+{
+ old_sigset_t s;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ set_fs (KERNEL_DS);
+ ret = sys_sigpending(&s);
+ set_fs (old_fs);
+ if (put_user (s, set)) return -EFAULT;
+ return ret;
+}
+
+extern asmlinkage long sys_rt_sigpending(sigset_t *set, size_t sigsetsize);
+
+asmlinkage long
+sys32_rt_sigpending(sigset32_t *set, __kernel_size_t32 sigsetsize)
+{
+ sigset_t s;
+ sigset32_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(sigset32_t)))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+siginfo_t32 *
+siginfo64to32(siginfo_t32 *d, siginfo_t *s)
+{
+ memset (d, 0, sizeof(siginfo_t32));
+ d->si_signo = s->si_signo;
+ d->si_errno = s->si_errno;
+ d->si_code = s->si_code;
+ if (s->si_signo >= SIGRTMIN) {
+ d->si_pid = s->si_pid;
+ d->si_uid = s->si_uid;
+ /* XXX: Ouch, how to find this out??? */
+ d->si_int = s->si_int;
+ } else switch (s->si_signo) {
+ /* XXX: What about POSIX1.b timers */
+ case SIGCHLD:
+ d->si_pid = s->si_pid;
+ d->si_status = s->si_status;
+ d->si_utime = s->si_utime;
+ d->si_stime = s->si_stime;
+ break;
+ case SIGSEGV:
+ case SIGBUS:
+ case SIGFPE:
+ case SIGILL:
+ d->si_addr = (long)(s->si_addr);
+// d->si_trapno = s->si_trapno;
+ break;
+ case SIGPOLL:
+ d->si_band = s->si_band;
+ d->si_fd = s->si_fd;
+ break;
+ default:
+ d->si_pid = s->si_pid;
+ d->si_uid = s->si_uid;
+ break;
+ }
+ return d;
+}
+
+siginfo_t *
+siginfo32to64(siginfo_t *d, siginfo_t32 *s)
+{
+ d->si_signo = s->si_signo;
+ d->si_errno = s->si_errno;
+ d->si_code = s->si_code;
+ if (s->si_signo >= SIGRTMIN) {
+ d->si_pid = s->si_pid;
+ d->si_uid = s->si_uid;
+ /* XXX: Ouch, how to find this out??? */
+ d->si_int = s->si_int;
+ } else switch (s->si_signo) {
+ /* XXX: What about POSIX1.b timers */
+ case SIGCHLD:
+ d->si_pid = s->si_pid;
+ d->si_status = s->si_status;
+ d->si_utime = s->si_utime;
+ d->si_stime = s->si_stime;
+ break;
+ case SIGSEGV:
+ case SIGBUS:
+ case SIGFPE:
+ case SIGILL:
+ d->si_addr = (void *)A(s->si_addr);
+// d->si_trapno = s->si_trapno;
+ break;
+ case SIGPOLL:
+ d->si_band = s->si_band;
+ d->si_fd = s->si_fd;
+ break;
+ default:
+ d->si_pid = s->si_pid;
+ d->si_uid = s->si_uid;
+ break;
+ }
+ return d;
+}
+
+extern asmlinkage long
+sys_rt_sigtimedwait(const sigset_t *uthese, siginfo_t *uinfo,
+ const struct timespec *uts, size_t sigsetsize);
+
+asmlinkage long
+sys32_rt_sigtimedwait(sigset32_t *uthese, siginfo_t32 *uinfo,
+ struct timespec32 *uts, __kernel_size_t32 sigsetsize)
+{
+ sigset_t s;
+ sigset32_t s32;
+ struct timespec t;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+ siginfo_t info;
+ siginfo_t32 info32;
+
+ if (copy_from_user (&s32, uthese, sizeof(sigset32_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);
+ }
+ if (uts) {
+ if (verify_area(VERIFY_READ, uts, sizeof(struct timespec32)) ||
+ __get_user (t.tv_sec, &uts->tv_sec) ||
+ __get_user (t.tv_nsec, &uts->tv_nsec))
+ return -EFAULT;
+ }
+ set_fs (KERNEL_DS);
+ ret = sys_rt_sigtimedwait(&s, &info, &t, sigsetsize);
+ set_fs (old_fs);
+ if (ret >= 0 && uinfo) {
+ if (copy_to_user (uinfo, siginfo64to32(&info32, &info),
+ sizeof(siginfo_t32)))
+ return -EFAULT;
+ }
+ return ret;
+}
+
+extern asmlinkage long
+sys_rt_sigqueueinfo(int pid, int sig, siginfo_t *uinfo);
+
+asmlinkage long
+sys32_rt_sigqueueinfo(int pid, int sig, siginfo_t32 *uinfo)
+{
+ siginfo_t info;
+ siginfo_t32 info32;
+ int ret;
+ mm_segment_t old_fs = get_fs();
+
+ if (copy_from_user (&info32, uinfo, sizeof(siginfo_t32)))
+ return -EFAULT;
+ /* XXX: Is this correct? */
+ siginfo32to64(&info, &info32);
+ set_fs (KERNEL_DS);
+ ret = sys_rt_sigqueueinfo(pid, sig, &info);
+ set_fs (old_fs);
+ return ret;
+}
+
+extern void check_pending(int signum);
+
+asmlinkage long sys_utimes(char *, struct timeval *);
+
+asmlinkage long
+sys32_utimes(char *filename, struct timeval32 *tvs)
+{
+ char *kfilename;
+ struct timeval ktvs[2];
+ mm_segment_t old_fs;
+ int ret;
+
+ kfilename = getname(filename);
+ ret = PTR_ERR(kfilename);
+ if (!IS_ERR(kfilename)) {
+ if (tvs) {
+ if (get_tv32(&ktvs[0], tvs) ||
+ get_tv32(&ktvs[1], 1+tvs))
+ return -EFAULT;
+ }
+
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_utimes(kfilename, &ktvs[0]);
+ set_fs(old_fs);
+
+ putname(kfilename);
+ }
+ 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;
+}
+
+
+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 *args32)
+{
+#ifndef CONFIG_SYSCTL
+ return -ENOSYS;
+#else
+ struct sysctl_ia32 a32;
+ mm_segment_t old_fs = get_fs ();
+ void *oldvalp, *newvalp;
+ size_t oldlen;
+ int *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 = (int *) A(a32.name);
+ oldvalp = (void *) A(a32.oldval);
+ newvalp = (void *) A(a32.newval);
+
+ if ((oldvalp && get_user(oldlen, (int *) A(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 *) A(a32.oldlenp)))
+ return -EFAULT;
+
+ return ret;
+#endif
+}
+
+extern asmlinkage ssize_t sys_pread(unsigned int fd, char * buf,
+ size_t count, loff_t pos);
+
+extern asmlinkage ssize_t sys_pwrite(unsigned int fd, const char * buf,
+ size_t count, loff_t pos);
+
+typedef __kernel_ssize_t32 ssize_t32;
+
+
+/* warning: next two assume little endian */
+asmlinkage ssize_t32
+sys32_pread(unsigned int fd, char *ubuf, __kernel_size_t32 count,
+ u32 poslo, u32 poshi)
+{
+ return sys_pread(fd, ubuf, count,
+ ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+asmlinkage ssize_t32
+sys32_pwrite(unsigned int fd, char *ubuf, __kernel_size_t32 count,
+ u32 poslo, u32 poshi)
+{
+ return sys_pwrite(fd, ubuf, count,
+ ((loff_t)AA(poshi) << 32) | AA(poslo));
+}
+
+
+extern asmlinkage long sys_personality(unsigned long);
+
+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;
+}
+
+extern asmlinkage ssize_t sys_sendfile(int out_fd, int in_fd, off_t *offset,
+ size_t count);
+
+asmlinkage long
+sys32_sendfile(int out_fd, int in_fd, __kernel_off_t32 *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 compatability. */
+
+struct timex32 {
+ u32 modes;
+ s32 offset, freq, maxerror, esterror;
+ s32 status, constant, precision, tolerance;
+ struct timeval32 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 *utp)
+{
+ struct timex txc;
+ int ret;
+
+ memset(&txc, 0, sizeof(struct timex));
+
+ if(verify_area(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(verify_area(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;
+}
+
+
+/* common code for old and new mmaps */
+static inline long do_mmap2(
+ unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
+{
+ int error = -EBADF;
+ struct file * file = NULL;
+
+ flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
+ if (!(flags & MAP_ANONYMOUS)) {
+ file = fget(fd);
+ if (!file)
+ goto out;
+ }
+
+ down_write(¤t->mm->mmap_sem);
+ error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
+ up_write(¤t->mm->mmap_sem);
+
+ if (file)
+ fput(file);
+out:
+ return error;
+}
+
+asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
+{
+ return do_mmap2(addr, len, prot, flags, fd, pgoff);
+}
+
+
+asmlinkage long sys32_olduname(struct oldold_utsname * 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 = (personality(current->personality) == PER_LINUX32)
+ ? "i686" : "x86_64";
+
+ __copy_to_user(&name->machine,arch,strlen(arch)+1);
+ }
+
+ up_read(&uts_sem);
+
+ error = error ? -EFAULT : 0;
+
+ return error;
+}
+
+asmlinkage long sys32_uname(struct old_utsname * name)
+{
+ int err;
+ 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;
+}
+
+extern int sys_ustat(dev_t, struct ustat *);
+
+int sys32_ustat(dev_t dev, struct ustat32 *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;
+}
+
+static int nargs(u32 src, char **dst)
+{
+ int cnt;
+ u32 val;
+
+ cnt = 0;
+ do {
+ int ret = get_user(val, (__u32 *)(u64)src);
+ if (ret)
+ return ret;
+ if (dst)
+ dst[cnt] = (char *)(u64)val;
+ cnt++;
+ src += 4;
+ if (cnt >= (MAX_ARG_PAGES*PAGE_SIZE)/sizeof(void*))
+ return -E2BIG;
+ } while(val);
+ if (dst)
+ dst[cnt-1] = 0;
+ return cnt;
+}
+
+int sys32_execve(char *name, u32 argv, u32 envp, struct pt_regs regs)
+{
+ mm_segment_t oldseg;
+ char **buf;
+ int na,ne;
+ int ret;
+ unsigned sz;
+
+ na = nargs(argv, NULL);
+ if (na < 0)
+ return -EFAULT;
+ ne = nargs(envp, NULL);
+ if (ne < 0)
+ return -EFAULT;
+
+ sz = (na+ne)*sizeof(void *);
+ if (sz > PAGE_SIZE)
+ buf = vmalloc(sz);
+ else
+ buf = kmalloc(sz, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ret = nargs(argv, buf);
+ if (ret < 0)
+ goto free;
+
+ ret = nargs(envp, buf + na);
+ if (ret < 0)
+ goto free;
+
+ name = getname(name);
+ ret = PTR_ERR(name);
+ if (IS_ERR(name))
+ goto free;
+
+ oldseg = get_fs();
+ set_fs(KERNEL_DS);
+ ret = do_execve(name, buf, buf+na, ®s);
+ set_fs(oldseg);
+
+ if (ret == 0)
+ current->ptrace &= ~PT_DTRACE;
+
+ putname(name);
+
+free:
+ if (sz > PAGE_SIZE)
+ vfree(buf);
+ else
+ kfree(buf);
+ return ret;
+}
+
+asmlinkage int sys32_fork(struct pt_regs regs)
+{
+ return do_fork(SIGCHLD, regs.rsp, ®s, 0);
+}
+
+asmlinkage int sys32_clone(unsigned int clone_flags, unsigned int newsp, struct pt_regs regs)
+{
+ if (!newsp)
+ newsp = regs.rsp;
+ return do_fork(clone_flags, newsp, ®s, 0);
+}
+
+/*
+ * This is trivial, and on the face of it looks like it
+ * could equally well be done in user mode.
+ *
+ * Not so, for quite unobvious reasons - register pressure.
+ * In user mode vfork() cannot have a stack frame, and if
+ * done by calling the "clone()" system call directly, you
+ * do not have enough call-clobbered registers to hold all
+ * the information you need.
+ */
+asmlinkage int sys32_vfork(struct pt_regs regs)
+{
+ return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, regs.rsp, ®s, 0);
+}
+
+/*
+ * Some system calls that need sign extended arguments. This could be done by a generic wrapper.
+ */
+
+extern off_t sys_lseek (unsigned int fd, off_t offset, unsigned int origin);
+
+int sys32_lseek (unsigned int fd, int offset, unsigned int whence)
+{
+ return sys_lseek(fd, offset, whence);
+}
+
+extern int sys_kill(pid_t pid, int sig);
+
+int sys32_kill(int pid, int sig)
+{
+ return sys_kill(pid, sig);
+}
+
+
+#if defined(CONFIG_NFSD) || defined(CONFIG_NFSD_MODULE)
+/* Stuff for NFS server syscalls... */
+struct nfsctl_svc32 {
+ u16 svc32_port;
+ s32 svc32_nthreads;
+};
+
+struct nfsctl_client32 {
+ s8 cl32_ident[NFSCLNT_IDMAX+1];
+ s32 cl32_naddr;
+ struct in_addr cl32_addrlist[NFSCLNT_ADDRMAX];
+ s32 cl32_fhkeytype;
+ s32 cl32_fhkeylen;
+ u8 cl32_fhkey[NFSCLNT_KEYMAX];
+};
+
+struct nfsctl_export32 {
+ s8 ex32_client[NFSCLNT_IDMAX+1];
+ s8 ex32_path[NFS_MAXPATHLEN+1];
+ __kernel_dev_t32 ex32_dev;
+ __kernel_ino_t32 ex32_ino;
+ s32 ex32_flags;
+ __kernel_uid_t32 ex32_anon_uid;
+ __kernel_gid_t32 ex32_anon_gid;
+};
+
+struct nfsctl_uidmap32 {
+ u32 ug32_ident; /* char * */
+ __kernel_uid_t32 ug32_uidbase;
+ s32 ug32_uidlen;
+ u32 ug32_udimap; /* uid_t * */
+ __kernel_uid_t32 ug32_gidbase;
+ s32 ug32_gidlen;
+ u32 ug32_gdimap; /* gid_t * */
+};
+
+struct nfsctl_fhparm32 {
+ struct sockaddr gf32_addr;
+ __kernel_dev_t32 gf32_dev;
+ __kernel_ino_t32 gf32_ino;
+ s32 gf32_version;
+};
+
+struct nfsctl_fdparm32 {
+ struct sockaddr gd32_addr;
+ s8 gd32_path[NFS_MAXPATHLEN+1];
+ s32 gd32_version;
+};
+
+struct nfsctl_fsparm32 {
+ struct sockaddr gd32_addr;
+ s8 gd32_path[NFS_MAXPATHLEN+1];
+ s32 gd32_maxlen;
+};
+
+struct nfsctl_arg32 {
+ s32 ca32_version; /* safeguard */
+ union {
+ struct nfsctl_svc32 u32_svc;
+ struct nfsctl_client32 u32_client;
+ struct nfsctl_export32 u32_export;
+ struct nfsctl_uidmap32 u32_umap;
+ struct nfsctl_fhparm32 u32_getfh;
+ struct nfsctl_fdparm32 u32_getfd;
+ struct nfsctl_fsparm32 u32_getfs;
+ } u;
+#define ca32_svc u.u32_svc
+#define ca32_client u.u32_client
+#define ca32_export u.u32_export
+#define ca32_umap u.u32_umap
+#define ca32_getfh u.u32_getfh
+#define ca32_getfd u.u32_getfd
+#define ca32_getfs u.u32_getfs
+#define ca32_authd u.u32_authd
+};
+
+union nfsctl_res32 {
+ __u8 cr32_getfh[NFS_FHSIZE];
+ struct knfsd_fh cr32_getfs;
+};
+
+static int nfs_svc32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = get_user(karg->ca_version, &arg32->ca32_version);
+ err |= __get_user(karg->ca_svc.svc_port, &arg32->ca32_svc.svc32_port);
+ err |= __get_user(karg->ca_svc.svc_nthreads, &arg32->ca32_svc.svc32_nthreads);
+ return err;
+}
+
+static int nfs_clnt32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_client.cl_ident[0],
+ &arg32->ca32_client.cl32_ident[0],
+ NFSCLNT_IDMAX);
+ err |= __get_user(karg->ca_client.cl_naddr, &arg32->ca32_client.cl32_naddr);
+ err |= copy_from_user(&karg->ca_client.cl_addrlist[0],
+ &arg32->ca32_client.cl32_addrlist[0],
+ (sizeof(struct in_addr) * NFSCLNT_ADDRMAX));
+ err |= __get_user(karg->ca_client.cl_fhkeytype,
+ &arg32->ca32_client.cl32_fhkeytype);
+ err |= __get_user(karg->ca_client.cl_fhkeylen,
+ &arg32->ca32_client.cl32_fhkeylen);
+ err |= copy_from_user(&karg->ca_client.cl_fhkey[0],
+ &arg32->ca32_client.cl32_fhkey[0],
+ NFSCLNT_KEYMAX);
+ return err;
+}
+
+static int nfs_exp32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_export.ex_client[0],
+ &arg32->ca32_export.ex32_client[0],
+ NFSCLNT_IDMAX);
+ err |= copy_from_user(&karg->ca_export.ex_path[0],
+ &arg32->ca32_export.ex32_path[0],
+ NFS_MAXPATHLEN);
+ err |= __get_user(karg->ca_export.ex_dev,
+ &arg32->ca32_export.ex32_dev);
+ err |= __get_user(karg->ca_export.ex_ino,
+ &arg32->ca32_export.ex32_ino);
+ err |= __get_user(karg->ca_export.ex_flags,
+ &arg32->ca32_export.ex32_flags);
+ err |= __get_user(karg->ca_export.ex_anon_uid,
+ &arg32->ca32_export.ex32_anon_uid);
+ err |= __get_user(karg->ca_export.ex_anon_gid,
+ &arg32->ca32_export.ex32_anon_gid);
+ karg->ca_export.ex_anon_uid = high2lowuid(karg->ca_export.ex_anon_uid);
+ karg->ca_export.ex_anon_gid = high2lowgid(karg->ca_export.ex_anon_gid);
+ return err;
+}
+
+static int nfs_uud32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ u32 uaddr;
+ int i;
+ int err;
+
+ memset(karg, 0, sizeof(*karg));
+ if(get_user(karg->ca_version, &arg32->ca32_version))
+ return -EFAULT;
+ karg->ca_umap.ug_ident = (char *)get_free_page(GFP_USER);
+ if(!karg->ca_umap.ug_ident)
+ return -ENOMEM;
+ err = get_user(uaddr, &arg32->ca32_umap.ug32_ident);
+ if(strncpy_from_user(karg->ca_umap.ug_ident,
+ (char *)A(uaddr), PAGE_SIZE) <= 0)
+ return -EFAULT;
+ err |= __get_user(karg->ca_umap.ug_uidbase,
+ &arg32->ca32_umap.ug32_uidbase);
+ err |= __get_user(karg->ca_umap.ug_uidlen,
+ &arg32->ca32_umap.ug32_uidlen);
+ err |= __get_user(uaddr, &arg32->ca32_umap.ug32_udimap);
+ if (err)
+ return -EFAULT;
+ karg->ca_umap.ug_udimap = kmalloc((sizeof(uid_t) * karg->ca_umap.ug_uidlen),
+ GFP_USER);
+ if(!karg->ca_umap.ug_udimap)
+ return -ENOMEM;
+ for(i = 0; i < karg->ca_umap.ug_uidlen; i++)
+ err |= __get_user(karg->ca_umap.ug_udimap[i],
+ &(((__kernel_uid_t32 *)A(uaddr))[i]));
+ err |= __get_user(karg->ca_umap.ug_gidbase,
+ &arg32->ca32_umap.ug32_gidbase);
+ err |= __get_user(karg->ca_umap.ug_uidlen,
+ &arg32->ca32_umap.ug32_gidlen);
+ err |= __get_user(uaddr, &arg32->ca32_umap.ug32_gdimap);
+ if (err)
+ return -EFAULT;
+ karg->ca_umap.ug_gdimap = kmalloc((sizeof(gid_t) * karg->ca_umap.ug_uidlen),
+ GFP_USER);
+ if(!karg->ca_umap.ug_gdimap)
+ return -ENOMEM;
+ for(i = 0; i < karg->ca_umap.ug_gidlen; i++)
+ err |= __get_user(karg->ca_umap.ug_gdimap[i],
+ &(((__kernel_gid_t32 *)A(uaddr))[i]));
+
+ return err;
+}
+
+static int nfs_getfh32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_getfh.gf_addr,
+ &arg32->ca32_getfh.gf32_addr,
+ (sizeof(struct sockaddr)));
+ err |= __get_user(karg->ca_getfh.gf_dev,
+ &arg32->ca32_getfh.gf32_dev);
+ err |= __get_user(karg->ca_getfh.gf_ino,
+ &arg32->ca32_getfh.gf32_ino);
+ err |= __get_user(karg->ca_getfh.gf_version,
+ &arg32->ca32_getfh.gf32_version);
+ return err;
+}
+
+static int nfs_getfd32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_getfd.gd_addr,
+ &arg32->ca32_getfd.gd32_addr,
+ (sizeof(struct sockaddr)));
+ err |= copy_from_user(&karg->ca_getfd.gd_path,
+ &arg32->ca32_getfd.gd32_path,
+ (NFS_MAXPATHLEN+1));
+ err |= get_user(karg->ca_getfd.gd_version,
+ &arg32->ca32_getfd.gd32_version);
+ return err;
+}
+
+static int nfs_getfs32_trans(struct nfsctl_arg *karg, struct nfsctl_arg32 *arg32)
+{
+ int err;
+
+ err = get_user(karg->ca_version, &arg32->ca32_version);
+ err |= copy_from_user(&karg->ca_getfs.gd_addr,
+ &arg32->ca32_getfs.gd32_addr,
+ (sizeof(struct sockaddr)));
+ err |= copy_from_user(&karg->ca_getfs.gd_path,
+ &arg32->ca32_getfs.gd32_path,
+ (NFS_MAXPATHLEN+1));
+ err |= get_user(karg->ca_getfs.gd_maxlen,
+ &arg32->ca32_getfs.gd32_maxlen);
+ return err;
+}
+
+/* This really doesn't need translations, we are only passing
+ * back a union which contains opaque nfs file handle data.
+ */
+static int nfs_getfh32_res_trans(union nfsctl_res *kres, union nfsctl_res32 *res32)
+{
+ return copy_to_user(res32, kres, sizeof(*res32));
+}
+
+int asmlinkage sys32_nfsservctl(int cmd, struct nfsctl_arg32 *arg32, union nfsctl_res32 *res32)
+{
+ struct nfsctl_arg *karg = NULL;
+ union nfsctl_res *kres = NULL;
+ mm_segment_t oldfs;
+ int err;
+
+ karg = kmalloc(sizeof(*karg), GFP_USER);
+ if(!karg)
+ return -ENOMEM;
+ if(res32) {
+ kres = kmalloc(sizeof(*kres), GFP_USER);
+ if(!kres) {
+ kfree(karg);
+ return -ENOMEM;
+ }
+ }
+ switch(cmd) {
+ case NFSCTL_SVC:
+ err = nfs_svc32_trans(karg, arg32);
+ break;
+ case NFSCTL_ADDCLIENT:
+ err = nfs_clnt32_trans(karg, arg32);
+ break;
+ case NFSCTL_DELCLIENT:
+ err = nfs_clnt32_trans(karg, arg32);
+ break;
+ case NFSCTL_EXPORT:
+ case NFSCTL_UNEXPORT:
+ err = nfs_exp32_trans(karg, arg32);
+ break;
+ /* This one is unimplemented, be we're ready for it. */
+ case NFSCTL_UGIDUPDATE:
+ err = nfs_uud32_trans(karg, arg32);
+ break;
+ case NFSCTL_GETFH:
+ err = nfs_getfh32_trans(karg, arg32);
+ break;
+ case NFSCTL_GETFD:
+ err = nfs_getfd32_trans(karg, arg32);
+ break;
+ case NFSCTL_GETFS:
+ err = nfs_getfs32_trans(karg, arg32);
+ break;
+ default:
+ err = -EINVAL;
+ break;
+ }
+ if(err)
+ goto done;
+ oldfs = get_fs();
+ set_fs(KERNEL_DS);
+ err = sys_nfsservctl(cmd, karg, kres);
+ set_fs(oldfs);
+
+ if (err)
+ goto done;
+
+ if((cmd == NFSCTL_GETFH) ||
+ (cmd == NFSCTL_GETFD) ||
+ (cmd == NFSCTL_GETFS))
+ err = nfs_getfh32_res_trans(kres, res32);
+
+done:
+ if(karg) {
+ if(cmd == NFSCTL_UGIDUPDATE) {
+ if(karg->ca_umap.ug_ident)
+ kfree(karg->ca_umap.ug_ident);
+ if(karg->ca_umap.ug_udimap)
+ kfree(karg->ca_umap.ug_udimap);
+ if(karg->ca_umap.ug_gdimap)
+ kfree(karg->ca_umap.ug_gdimap);
+ }
+ kfree(karg);
+ }
+ if(kres)
+ kfree(kres);
+ return err;
+}
+#else /* !NFSD */
+extern asmlinkage long sys_ni_syscall(void);
+int asmlinkage sys32_nfsservctl(int cmd, void *notused, void *notused2)
+{
+ return sys_ni_syscall();
+}
+#endif
+
+int sys32_module_warning(void)
+{
+ static long warn_time = -(60*HZ);
+ if (time_before(warn_time + 60*HZ,jiffies) && strcmp(current->comm,"klogd")) {
+ printk(KERN_INFO "%s: 32bit modutils not supported on 64bit kernel\n",
+ current->comm);
+ warn_time = jiffies;
+ }
+ return -ENOSYS ;
+}
+
+struct exec_domain ia32_exec_domain = {
+ name: "linux/x86",
+ pers_low: PER_LINUX32,
+ pers_high: PER_LINUX32,
+};
+
+static int __init ia32_init (void)
+{
+ printk("IA32 emulation $Id: sys_ia32.c,v 1.42 2002/09/17 15:23:41 ak Exp $\n");
+ ia32_exec_domain.signal_map = default_exec_domain.signal_map;
+ ia32_exec_domain.signal_invmap = default_exec_domain.signal_invmap;
+ register_exec_domain(&ia32_exec_domain);
+ return 0;
+}
+
+__initcall(ia32_init);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)