Merge branch 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull fs/compat.c cleanups from Al Viro:
"More moving of compat syscalls from fs/compat.c to fs/*.c where the
native counterparts live.
And death to compat_sys_getdents64() - the only architecture that used
to need it was ia64, and _that_ has lost biarch support quite a few
years ago"
* 'work.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs/compat.c: trim unused includes
move compat_rw_copy_check_uvector() over to fs/read_write.c
fhandle: move compat syscalls from compat.c
open: move compat syscalls from compat.c
stat: move compat syscalls from compat.c
fcntl: move compat syscalls from compat.c
readdir: move compat syscalls from compat.c
statfs: move compat syscalls from compat.c
utimes: move compat syscalls from compat.c
move compat select-related syscalls to fs/select.c
Remove compat_sys_getdents64()
diff --git a/arch/arm64/include/asm/unistd.h b/arch/arm64/include/asm/unistd.h
index bdbeb06..a0baa9a 100644
--- a/arch/arm64/include/asm/unistd.h
+++ b/arch/arm64/include/asm/unistd.h
@@ -14,7 +14,6 @@
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifdef CONFIG_COMPAT
-#define __ARCH_WANT_COMPAT_SYS_GETDENTS64
#define __ARCH_WANT_COMPAT_STAT64
#define __ARCH_WANT_SYS_GETHOSTNAME
#define __ARCH_WANT_SYS_PAUSE
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index c66b51a..ef29216 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -456,7 +456,7 @@ __SYSCALL(__NR_setfsuid32, sys_setfsuid)
#define __NR_setfsgid32 216
__SYSCALL(__NR_setfsgid32, sys_setfsgid)
#define __NR_getdents64 217
-__SYSCALL(__NR_getdents64, compat_sys_getdents64)
+__SYSCALL(__NR_getdents64, sys_getdents64)
#define __NR_pivot_root 218
__SYSCALL(__NR_pivot_root, sys_pivot_root)
#define __NR_mincore 219
diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index 0af59fa..448ac21 100644
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -226,7 +226,7 @@
217 i386 pivot_root sys_pivot_root
218 i386 mincore sys_mincore
219 i386 madvise sys_madvise
-220 i386 getdents64 sys_getdents64 compat_sys_getdents64
+220 i386 getdents64 sys_getdents64
221 i386 fcntl64 sys_fcntl64 compat_sys_fcntl64
# 222 is unused
# 223 is unused
diff --git a/arch/x86/include/asm/unistd.h b/arch/x86/include/asm/unistd.h
index 32712a9..1ba1536 100644
--- a/arch/x86/include/asm/unistd.h
+++ b/arch/x86/include/asm/unistd.h
@@ -23,7 +23,6 @@
# include <asm/unistd_64.h>
# include <asm/unistd_64_x32.h>
# define __ARCH_WANT_COMPAT_SYS_TIME
-# define __ARCH_WANT_COMPAT_SYS_GETDENTS64
# define __ARCH_WANT_COMPAT_SYS_PREADV64
# define __ARCH_WANT_COMPAT_SYS_PWRITEV64
# define __ARCH_WANT_COMPAT_SYS_PREADV64V2
diff --git a/fs/compat.c b/fs/compat.c
index c61b506..190b38b 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -15,555 +15,14 @@
* published by the Free Software Foundation.
*/
-#include <linux/stddef.h>
-#include <linux/kernel.h>
-#include <linux/linkage.h>
#include <linux/compat.h>
-#include <linux/errno.h>
-#include <linux/time.h>
-#include <linux/cred.h>
-#include <linux/fs.h>
-#include <linux/fcntl.h>
-#include <linux/namei.h>
-#include <linux/file.h>
-#include <linux/fdtable.h>
-#include <linux/vfs.h>
-#include <linux/ioctl.h>
-#include <linux/init.h>
#include <linux/ncp_mount.h>
#include <linux/nfs4_mount.h>
#include <linux/syscalls.h>
-#include <linux/ctype.h>
-#include <linux/dirent.h>
-#include <linux/fsnotify.h>
-#include <linux/highuid.h>
-#include <linux/personality.h>
-#include <linux/rwsem.h>
-#include <linux/tsacct_kern.h>
-#include <linux/security.h>
-#include <linux/highmem.h>
-#include <linux/signal.h>
-#include <linux/poll.h>
-#include <linux/mm.h>
-#include <linux/fs_struct.h>
#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <linux/aio.h>
-
#include <linux/uaccess.h>
-#include <asm/mmu_context.h>
-#include <asm/ioctls.h>
#include "internal.h"
-/*
- * Not all architectures have sys_utime, so implement this in terms
- * of sys_utimes.
- */
-COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename,
- struct compat_utimbuf __user *, t)
-{
- struct timespec tv[2];
-
- if (t) {
- if (get_user(tv[0].tv_sec, &t->actime) ||
- get_user(tv[1].tv_sec, &t->modtime))
- return -EFAULT;
- tv[0].tv_nsec = 0;
- tv[1].tv_nsec = 0;
- }
- return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
-}
-
-COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __user *, t, int, flags)
-{
- struct timespec tv[2];
-
- if (t) {
- if (compat_get_timespec(&tv[0], &t[0]) ||
- compat_get_timespec(&tv[1], &t[1]))
- return -EFAULT;
-
- if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
- return 0;
- }
- return do_utimes(dfd, filename, t ? tv : NULL, flags);
-}
-
-COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t)
-{
- struct timespec tv[2];
-
- if (t) {
- if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
- get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
- get_user(tv[1].tv_sec, &t[1].tv_sec) ||
- get_user(tv[1].tv_nsec, &t[1].tv_usec))
- return -EFAULT;
- if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
- tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
- return -EINVAL;
- tv[0].tv_nsec *= 1000;
- tv[1].tv_nsec *= 1000;
- }
- return do_utimes(dfd, filename, t ? tv : NULL, 0);
-}
-
-COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct compat_timeval __user *, t)
-{
- return compat_sys_futimesat(AT_FDCWD, filename, t);
-}
-
-static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
-{
- struct compat_stat tmp;
-
- if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
- return -EOVERFLOW;
-
- memset(&tmp, 0, sizeof(tmp));
- tmp.st_dev = old_encode_dev(stat->dev);
- tmp.st_ino = stat->ino;
- if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
- return -EOVERFLOW;
- tmp.st_mode = stat->mode;
- tmp.st_nlink = stat->nlink;
- if (tmp.st_nlink != stat->nlink)
- return -EOVERFLOW;
- SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
- SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
- tmp.st_rdev = old_encode_dev(stat->rdev);
- if ((u64) stat->size > MAX_NON_LFS)
- return -EOVERFLOW;
- tmp.st_size = stat->size;
- tmp.st_atime = stat->atime.tv_sec;
- tmp.st_atime_nsec = stat->atime.tv_nsec;
- tmp.st_mtime = stat->mtime.tv_sec;
- tmp.st_mtime_nsec = stat->mtime.tv_nsec;
- tmp.st_ctime = stat->ctime.tv_sec;
- tmp.st_ctime_nsec = stat->ctime.tv_nsec;
- tmp.st_blocks = stat->blocks;
- tmp.st_blksize = stat->blksize;
- return copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0;
-}
-
-COMPAT_SYSCALL_DEFINE2(newstat, const char __user *, filename,
- struct compat_stat __user *, statbuf)
-{
- struct kstat stat;
- int error;
-
- error = vfs_stat(filename, &stat);
- if (error)
- return error;
- return cp_compat_stat(&stat, statbuf);
-}
-
-COMPAT_SYSCALL_DEFINE2(newlstat, const char __user *, filename,
- struct compat_stat __user *, statbuf)
-{
- struct kstat stat;
- int error;
-
- error = vfs_lstat(filename, &stat);
- if (error)
- return error;
- return cp_compat_stat(&stat, statbuf);
-}
-
-#ifndef __ARCH_WANT_STAT64
-COMPAT_SYSCALL_DEFINE4(newfstatat, unsigned int, dfd,
- const char __user *, filename,
- struct compat_stat __user *, statbuf, int, flag)
-{
- struct kstat stat;
- int error;
-
- error = vfs_fstatat(dfd, filename, &stat, flag);
- if (error)
- return error;
- return cp_compat_stat(&stat, statbuf);
-}
-#endif
-
-COMPAT_SYSCALL_DEFINE2(newfstat, unsigned int, fd,
- struct compat_stat __user *, statbuf)
-{
- struct kstat stat;
- int error = vfs_fstat(fd, &stat);
-
- if (!error)
- error = cp_compat_stat(&stat, statbuf);
- return error;
-}
-
-static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *kbuf)
-{
-
- if (sizeof ubuf->f_blocks == 4) {
- if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail |
- kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
- return -EOVERFLOW;
- /* f_files and f_ffree may be -1; it's okay
- * to stuff that into 32 bits */
- if (kbuf->f_files != 0xffffffffffffffffULL
- && (kbuf->f_files & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- if (kbuf->f_ffree != 0xffffffffffffffffULL
- && (kbuf->f_ffree & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- }
- if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
- __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]) ||
- __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
- __put_user(kbuf->f_flags, &ubuf->f_flags) ||
- __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
- return -EFAULT;
- return 0;
-}
-
-/*
- * The following statfs calls are copies of code from fs/statfs.c and
- * should be checked against those from time to time
- */
-COMPAT_SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct compat_statfs __user *, buf)
-{
- struct kstatfs tmp;
- int error = user_statfs(pathname, &tmp);
- if (!error)
- error = put_compat_statfs(buf, &tmp);
- return error;
-}
-
-COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *, buf)
-{
- struct kstatfs tmp;
- int error = fd_statfs(fd, &tmp);
- if (!error)
- error = put_compat_statfs(buf, &tmp);
- return error;
-}
-
-static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf)
-{
- if (sizeof(ubuf->f_bsize) == 4) {
- if ((kbuf->f_type | kbuf->f_bsize | kbuf->f_namelen |
- kbuf->f_frsize | kbuf->f_flags) & 0xffffffff00000000ULL)
- return -EOVERFLOW;
- /* f_files and f_ffree may be -1; it's okay
- * to stuff that into 32 bits */
- if (kbuf->f_files != 0xffffffffffffffffULL
- && (kbuf->f_files & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- if (kbuf->f_ffree != 0xffffffffffffffffULL
- && (kbuf->f_ffree & 0xffffffff00000000ULL))
- return -EOVERFLOW;
- }
- if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
- __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]) ||
- __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
- __put_user(kbuf->f_flags, &ubuf->f_flags) ||
- __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
- return -EFAULT;
- return 0;
-}
-
-COMPAT_SYSCALL_DEFINE3(statfs64, const char __user *, pathname, compat_size_t, sz, struct compat_statfs64 __user *, buf)
-{
- struct kstatfs tmp;
- int error;
-
- if (sz != sizeof(*buf))
- return -EINVAL;
-
- error = user_statfs(pathname, &tmp);
- if (!error)
- error = put_compat_statfs64(buf, &tmp);
- return error;
-}
-
-COMPAT_SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, compat_size_t, sz, struct compat_statfs64 __user *, buf)
-{
- struct kstatfs tmp;
- int error;
-
- if (sz != sizeof(*buf))
- return -EINVAL;
-
- error = fd_statfs(fd, &tmp);
- if (!error)
- error = put_compat_statfs64(buf, &tmp);
- return error;
-}
-
-/*
- * This is a copy of sys_ustat, just dealing with a structure layout.
- * Given how simple this syscall is that apporach is more maintainable
- * than the various conversion hacks.
- */
-COMPAT_SYSCALL_DEFINE2(ustat, unsigned, dev, struct compat_ustat __user *, u)
-{
- struct compat_ustat tmp;
- struct kstatfs sbuf;
- int err = vfs_ustat(new_decode_dev(dev), &sbuf);
- if (err)
- return err;
-
- memset(&tmp, 0, sizeof(struct compat_ustat));
- tmp.f_tfree = sbuf.f_bfree;
- tmp.f_tinode = sbuf.f_ffree;
- if (copy_to_user(u, &tmp, sizeof(struct compat_ustat)))
- return -EFAULT;
- return 0;
-}
-
-static int get_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
-{
- if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
- __get_user(kfl->l_type, &ufl->l_type) ||
- __get_user(kfl->l_whence, &ufl->l_whence) ||
- __get_user(kfl->l_start, &ufl->l_start) ||
- __get_user(kfl->l_len, &ufl->l_len) ||
- __get_user(kfl->l_pid, &ufl->l_pid))
- return -EFAULT;
- return 0;
-}
-
-static int put_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
-{
- if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) ||
- __put_user(kfl->l_type, &ufl->l_type) ||
- __put_user(kfl->l_whence, &ufl->l_whence) ||
- __put_user(kfl->l_start, &ufl->l_start) ||
- __put_user(kfl->l_len, &ufl->l_len) ||
- __put_user(kfl->l_pid, &ufl->l_pid))
- return -EFAULT;
- return 0;
-}
-
-#ifndef HAVE_ARCH_GET_COMPAT_FLOCK64
-static int get_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl)
-{
- if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
- __get_user(kfl->l_type, &ufl->l_type) ||
- __get_user(kfl->l_whence, &ufl->l_whence) ||
- __get_user(kfl->l_start, &ufl->l_start) ||
- __get_user(kfl->l_len, &ufl->l_len) ||
- __get_user(kfl->l_pid, &ufl->l_pid))
- return -EFAULT;
- return 0;
-}
-#endif
-
-#ifndef HAVE_ARCH_PUT_COMPAT_FLOCK64
-static int put_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl)
-{
- if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) ||
- __put_user(kfl->l_type, &ufl->l_type) ||
- __put_user(kfl->l_whence, &ufl->l_whence) ||
- __put_user(kfl->l_start, &ufl->l_start) ||
- __put_user(kfl->l_len, &ufl->l_len) ||
- __put_user(kfl->l_pid, &ufl->l_pid))
- return -EFAULT;
- return 0;
-}
-#endif
-
-static unsigned int
-convert_fcntl_cmd(unsigned int cmd)
-{
- switch (cmd) {
- case F_GETLK64:
- return F_GETLK;
- case F_SETLK64:
- return F_SETLK;
- case F_SETLKW64:
- return F_SETLKW;
- }
-
- return cmd;
-}
-
-COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd,
- compat_ulong_t, arg)
-{
- mm_segment_t old_fs;
- struct flock f;
- long ret;
- unsigned int conv_cmd;
-
- switch (cmd) {
- case F_GETLK:
- case F_SETLK:
- case F_SETLKW:
- ret = get_compat_flock(&f, compat_ptr(arg));
- if (ret != 0)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- ret = sys_fcntl(fd, cmd, (unsigned long)&f);
- set_fs(old_fs);
- if (cmd == F_GETLK && ret == 0) {
- /* GETLK was successful and we need to return the data...
- * but it needs to fit in the compat structure.
- * l_start shouldn't be too big, unless the original
- * start + end is greater than COMPAT_OFF_T_MAX, in which
- * case the app was asking for trouble, so we return
- * -EOVERFLOW in that case.
- * l_len could be too big, in which case we just truncate it,
- * and only allow the app to see that part of the conflicting
- * lock that might make sense to it anyway
- */
-
- if (f.l_start > COMPAT_OFF_T_MAX)
- ret = -EOVERFLOW;
- if (f.l_len > COMPAT_OFF_T_MAX)
- f.l_len = COMPAT_OFF_T_MAX;
- if (ret == 0)
- ret = put_compat_flock(&f, compat_ptr(arg));
- }
- break;
-
- case F_GETLK64:
- case F_SETLK64:
- case F_SETLKW64:
- case F_OFD_GETLK:
- case F_OFD_SETLK:
- case F_OFD_SETLKW:
- ret = get_compat_flock64(&f, compat_ptr(arg));
- if (ret != 0)
- break;
- old_fs = get_fs();
- set_fs(KERNEL_DS);
- conv_cmd = convert_fcntl_cmd(cmd);
- ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f);
- set_fs(old_fs);
- if ((conv_cmd == F_GETLK || conv_cmd == F_OFD_GETLK) && ret == 0) {
- /* need to return lock information - see above for commentary */
- if (f.l_start > COMPAT_LOFF_T_MAX)
- ret = -EOVERFLOW;
- if (f.l_len > COMPAT_LOFF_T_MAX)
- f.l_len = COMPAT_LOFF_T_MAX;
- if (ret == 0)
- ret = put_compat_flock64(&f, compat_ptr(arg));
- }
- break;
-
- default:
- ret = sys_fcntl(fd, cmd, arg);
- break;
- }
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd,
- compat_ulong_t, arg)
-{
- switch (cmd) {
- case F_GETLK64:
- case F_SETLK64:
- case F_SETLKW64:
- case F_OFD_GETLK:
- case F_OFD_SETLK:
- case F_OFD_SETLKW:
- return -EINVAL;
- }
- return compat_sys_fcntl64(fd, cmd, arg);
-}
-
-/* A write operation does a read from user space and vice versa */
-#define vrfy_dir(type) ((type) == READ ? VERIFY_WRITE : VERIFY_READ)
-
-ssize_t compat_rw_copy_check_uvector(int type,
- const struct compat_iovec __user *uvector, unsigned long nr_segs,
- unsigned long fast_segs, struct iovec *fast_pointer,
- struct iovec **ret_pointer)
-{
- compat_ssize_t tot_len;
- struct iovec *iov = *ret_pointer = fast_pointer;
- ssize_t ret = 0;
- int seg;
-
- /*
- * SuS says "The readv() function *may* fail if the iovcnt argument
- * was less than or equal to 0, or greater than {IOV_MAX}. Linux has
- * traditionally returned zero for zero segments, so...
- */
- if (nr_segs == 0)
- goto out;
-
- ret = -EINVAL;
- if (nr_segs > UIO_MAXIOV)
- goto out;
- if (nr_segs > fast_segs) {
- ret = -ENOMEM;
- iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
- if (iov == NULL)
- goto out;
- }
- *ret_pointer = iov;
-
- ret = -EFAULT;
- if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
- goto out;
-
- /*
- * Single unix specification:
- * We should -EINVAL if an element length is not >= 0 and fitting an
- * ssize_t.
- *
- * In Linux, the total length is limited to MAX_RW_COUNT, there is
- * no overflow possibility.
- */
- tot_len = 0;
- ret = -EINVAL;
- for (seg = 0; seg < nr_segs; seg++) {
- compat_uptr_t buf;
- compat_ssize_t len;
-
- if (__get_user(len, &uvector->iov_len) ||
- __get_user(buf, &uvector->iov_base)) {
- ret = -EFAULT;
- goto out;
- }
- if (len < 0) /* size_t not fitting in compat_ssize_t .. */
- goto out;
- if (type >= 0 &&
- !access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
- ret = -EFAULT;
- goto out;
- }
- if (len > MAX_RW_COUNT - tot_len)
- len = MAX_RW_COUNT - tot_len;
- tot_len += len;
- iov->iov_base = compat_ptr(buf);
- iov->iov_len = (compat_size_t) len;
- uvector++;
- iov++;
- }
- ret = tot_len;
-
-out:
- return ret;
-}
-
struct compat_ncp_mount_data {
compat_int_t version;
compat_uint_t ncp_fd;
@@ -744,653 +203,3 @@ COMPAT_SYSCALL_DEFINE5(mount, const char __user *, dev_name,
out:
return retval;
}
-
-struct compat_old_linux_dirent {
- compat_ulong_t d_ino;
- compat_ulong_t d_offset;
- unsigned short d_namlen;
- char d_name[1];
-};
-
-struct compat_readdir_callback {
- struct dir_context ctx;
- struct compat_old_linux_dirent __user *dirent;
- int result;
-};
-
-static int compat_fillonedir(struct dir_context *ctx, const char *name,
- int namlen, loff_t offset, u64 ino,
- unsigned int d_type)
-{
- struct compat_readdir_callback *buf =
- container_of(ctx, struct compat_readdir_callback, ctx);
- struct compat_old_linux_dirent __user *dirent;
- compat_ulong_t d_ino;
-
- if (buf->result)
- return -EINVAL;
- d_ino = ino;
- if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
- buf->result = -EOVERFLOW;
- return -EOVERFLOW;
- }
- buf->result++;
- dirent = buf->dirent;
- if (!access_ok(VERIFY_WRITE, dirent,
- (unsigned long)(dirent->d_name + namlen + 1) -
- (unsigned long)dirent))
- goto efault;
- if ( __put_user(d_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))
- goto efault;
- return 0;
-efault:
- buf->result = -EFAULT;
- return -EFAULT;
-}
-
-COMPAT_SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
- struct compat_old_linux_dirent __user *, dirent, unsigned int, count)
-{
- int error;
- struct fd f = fdget_pos(fd);
- struct compat_readdir_callback buf = {
- .ctx.actor = compat_fillonedir,
- .dirent = dirent
- };
-
- if (!f.file)
- return -EBADF;
-
- error = iterate_dir(f.file, &buf.ctx);
- if (buf.result)
- error = buf.result;
-
- fdput_pos(f);
- return error;
-}
-
-struct compat_linux_dirent {
- compat_ulong_t d_ino;
- compat_ulong_t d_off;
- unsigned short d_reclen;
- char d_name[1];
-};
-
-struct compat_getdents_callback {
- struct dir_context ctx;
- struct compat_linux_dirent __user *current_dir;
- struct compat_linux_dirent __user *previous;
- int count;
- int error;
-};
-
-static int compat_filldir(struct dir_context *ctx, const char *name, int namlen,
- loff_t offset, u64 ino, unsigned int d_type)
-{
- struct compat_linux_dirent __user * dirent;
- struct compat_getdents_callback *buf =
- container_of(ctx, struct compat_getdents_callback, ctx);
- compat_ulong_t d_ino;
- int reclen = ALIGN(offsetof(struct compat_linux_dirent, d_name) +
- namlen + 2, sizeof(compat_long_t));
-
- buf->error = -EINVAL; /* only used if we fail.. */
- if (reclen > buf->count)
- return -EINVAL;
- d_ino = ino;
- if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
- buf->error = -EOVERFLOW;
- return -EOVERFLOW;
- }
- dirent = buf->previous;
- if (dirent) {
- if (signal_pending(current))
- return -EINTR;
- if (__put_user(offset, &dirent->d_off))
- goto efault;
- }
- dirent = buf->current_dir;
- if (__put_user(d_ino, &dirent->d_ino))
- goto efault;
- if (__put_user(reclen, &dirent->d_reclen))
- goto efault;
- if (copy_to_user(dirent->d_name, name, namlen))
- goto efault;
- if (__put_user(0, dirent->d_name + namlen))
- goto efault;
- if (__put_user(d_type, (char __user *) dirent + reclen - 1))
- goto efault;
- buf->previous = dirent;
- dirent = (void __user *)dirent + reclen;
- buf->current_dir = dirent;
- buf->count -= reclen;
- return 0;
-efault:
- buf->error = -EFAULT;
- return -EFAULT;
-}
-
-COMPAT_SYSCALL_DEFINE3(getdents, unsigned int, fd,
- struct compat_linux_dirent __user *, dirent, unsigned int, count)
-{
- struct fd f;
- struct compat_linux_dirent __user * lastdirent;
- struct compat_getdents_callback buf = {
- .ctx.actor = compat_filldir,
- .current_dir = dirent,
- .count = count
- };
- int error;
-
- if (!access_ok(VERIFY_WRITE, dirent, count))
- return -EFAULT;
-
- f = fdget_pos(fd);
- if (!f.file)
- return -EBADF;
-
- error = iterate_dir(f.file, &buf.ctx);
- if (error >= 0)
- error = buf.error;
- lastdirent = buf.previous;
- if (lastdirent) {
- if (put_user(buf.ctx.pos, &lastdirent->d_off))
- error = -EFAULT;
- else
- error = count - buf.count;
- }
- fdput_pos(f);
- return error;
-}
-
-#ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64
-
-struct compat_getdents_callback64 {
- struct dir_context ctx;
- struct linux_dirent64 __user *current_dir;
- struct linux_dirent64 __user *previous;
- int count;
- int error;
-};
-
-static int compat_filldir64(struct dir_context *ctx, const char *name,
- int namlen, loff_t offset, u64 ino,
- unsigned int d_type)
-{
- struct linux_dirent64 __user *dirent;
- struct compat_getdents_callback64 *buf =
- container_of(ctx, struct compat_getdents_callback64, ctx);
- int reclen = ALIGN(offsetof(struct linux_dirent64, d_name) + namlen + 1,
- sizeof(u64));
- u64 off;
-
- buf->error = -EINVAL; /* only used if we fail.. */
- if (reclen > buf->count)
- return -EINVAL;
- dirent = buf->previous;
-
- if (dirent) {
- if (signal_pending(current))
- return -EINTR;
- if (__put_user_unaligned(offset, &dirent->d_off))
- goto efault;
- }
- dirent = buf->current_dir;
- if (__put_user_unaligned(ino, &dirent->d_ino))
- goto efault;
- off = 0;
- if (__put_user_unaligned(off, &dirent->d_off))
- goto efault;
- if (__put_user(reclen, &dirent->d_reclen))
- goto efault;
- if (__put_user(d_type, &dirent->d_type))
- goto efault;
- if (copy_to_user(dirent->d_name, name, namlen))
- goto efault;
- if (__put_user(0, dirent->d_name + namlen))
- goto efault;
- buf->previous = dirent;
- dirent = (void __user *)dirent + reclen;
- buf->current_dir = dirent;
- buf->count -= reclen;
- return 0;
-efault:
- buf->error = -EFAULT;
- return -EFAULT;
-}
-
-COMPAT_SYSCALL_DEFINE3(getdents64, unsigned int, fd,
- struct linux_dirent64 __user *, dirent, unsigned int, count)
-{
- struct fd f;
- struct linux_dirent64 __user * lastdirent;
- struct compat_getdents_callback64 buf = {
- .ctx.actor = compat_filldir64,
- .current_dir = dirent,
- .count = count
- };
- int error;
-
- if (!access_ok(VERIFY_WRITE, dirent, count))
- return -EFAULT;
-
- f = fdget_pos(fd);
- if (!f.file)
- return -EBADF;
-
- error = iterate_dir(f.file, &buf.ctx);
- if (error >= 0)
- error = buf.error;
- lastdirent = buf.previous;
- if (lastdirent) {
- typeof(lastdirent->d_off) d_off = buf.ctx.pos;
- if (__put_user_unaligned(d_off, &lastdirent->d_off))
- error = -EFAULT;
- else
- error = count - buf.count;
- }
- fdput_pos(f);
- return error;
-}
-#endif /* __ARCH_WANT_COMPAT_SYS_GETDENTS64 */
-
-/*
- * Exactly like fs/open.c:sys_open(), except that it doesn't set the
- * O_LARGEFILE flag.
- */
-COMPAT_SYSCALL_DEFINE3(open, const char __user *, filename, int, flags, umode_t, mode)
-{
- return do_sys_open(AT_FDCWD, filename, flags, mode);
-}
-
-/*
- * Exactly like fs/open.c:sys_openat(), except that it doesn't set the
- * O_LARGEFILE flag.
- */
-COMPAT_SYSCALL_DEFINE4(openat, int, dfd, const char __user *, filename, int, flags, umode_t, mode)
-{
- return do_sys_open(dfd, filename, flags, mode);
-}
-
-#define __COMPAT_NFDBITS (8 * sizeof(compat_ulong_t))
-
-static int poll_select_copy_remaining(struct timespec *end_time, void __user *p,
- int timeval, int ret)
-{
- struct timespec ts;
-
- if (!p)
- return ret;
-
- if (current->personality & STICKY_TIMEOUTS)
- goto sticky;
-
- /* No update for zero timeout */
- if (!end_time->tv_sec && !end_time->tv_nsec)
- return ret;
-
- ktime_get_ts(&ts);
- ts = timespec_sub(*end_time, ts);
- if (ts.tv_sec < 0)
- ts.tv_sec = ts.tv_nsec = 0;
-
- if (timeval) {
- struct compat_timeval rtv;
-
- rtv.tv_sec = ts.tv_sec;
- rtv.tv_usec = ts.tv_nsec / NSEC_PER_USEC;
-
- if (!copy_to_user(p, &rtv, sizeof(rtv)))
- return ret;
- } else {
- struct compat_timespec rts;
-
- rts.tv_sec = ts.tv_sec;
- rts.tv_nsec = ts.tv_nsec;
-
- if (!copy_to_user(p, &rts, sizeof(rts)))
- return ret;
- }
- /*
- * If an application puts its timeval in read-only memory, we
- * don't want the Linux-specific update to the timeval to
- * cause a fault after the select has completed
- * successfully. However, because we're not updating the
- * timeval, we can't restart the system call.
- */
-
-sticky:
- if (ret == -ERESTARTNOHAND)
- ret = -EINTR;
- return ret;
-}
-
-/*
- * Ooo, nasty. We need here to frob 32-bit unsigned longs to
- * 64-bit unsigned longs.
- */
-static
-int compat_get_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
- unsigned long *fdset)
-{
- nr = DIV_ROUND_UP(nr, __COMPAT_NFDBITS);
- if (ufdset) {
- unsigned long odd;
-
- if (!access_ok(VERIFY_WRITE, ufdset, nr*sizeof(compat_ulong_t)))
- return -EFAULT;
-
- odd = nr & 1UL;
- nr &= ~1UL;
- while (nr) {
- unsigned long h, l;
- if (__get_user(l, ufdset) || __get_user(h, ufdset+1))
- return -EFAULT;
- ufdset += 2;
- *fdset++ = h << 32 | l;
- nr -= 2;
- }
- if (odd && __get_user(*fdset, ufdset))
- return -EFAULT;
- } else {
- /* Tricky, must clear full unsigned long in the
- * kernel fdset at the end, this makes sure that
- * actually happens.
- */
- memset(fdset, 0, ((nr + 1) & ~1)*sizeof(compat_ulong_t));
- }
- return 0;
-}
-
-static
-int compat_set_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
- unsigned long *fdset)
-{
- unsigned long odd;
- nr = DIV_ROUND_UP(nr, __COMPAT_NFDBITS);
-
- if (!ufdset)
- return 0;
-
- odd = nr & 1UL;
- nr &= ~1UL;
- while (nr) {
- unsigned long h, l;
- l = *fdset++;
- h = l >> 32;
- if (__put_user(l, ufdset) || __put_user(h, ufdset+1))
- return -EFAULT;
- ufdset += 2;
- nr -= 2;
- }
- if (odd && __put_user(*fdset, ufdset))
- return -EFAULT;
- return 0;
-}
-
-
-/*
- * This is a virtual copy of sys_select from fs/select.c and probably
- * should be compared to it from time to time
- */
-
-/*
- * 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.
- */
-int compat_core_sys_select(int n, compat_ulong_t __user *inp,
- compat_ulong_t __user *outp, compat_ulong_t __user *exp,
- struct timespec *end_time)
-{
- fd_set_bits fds;
- void *bits;
- int size, max_fds, ret = -EINVAL;
- struct fdtable *fdt;
- long stack_fds[SELECT_STACK_ALLOC/sizeof(long)];
-
- if (n < 0)
- goto out_nofds;
-
- /* max_fds can increase, so grab it once to avoid race */
- rcu_read_lock();
- fdt = files_fdtable(current->files);
- max_fds = fdt->max_fds;
- rcu_read_unlock();
- if (n > max_fds)
- n = max_fds;
-
- /*
- * 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.
- */
- size = FDS_BYTES(n);
- bits = stack_fds;
- if (size > sizeof(stack_fds) / 6) {
- bits = kmalloc(6 * size, GFP_KERNEL);
- ret = -ENOMEM;
- 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 = compat_get_fd_set(n, inp, fds.in)) ||
- (ret = compat_get_fd_set(n, outp, fds.out)) ||
- (ret = compat_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, end_time);
-
- if (ret < 0)
- goto out;
- if (!ret) {
- ret = -ERESTARTNOHAND;
- if (signal_pending(current))
- goto out;
- ret = 0;
- }
-
- if (compat_set_fd_set(n, inp, fds.res_in) ||
- compat_set_fd_set(n, outp, fds.res_out) ||
- compat_set_fd_set(n, exp, fds.res_ex))
- ret = -EFAULT;
-out:
- if (bits != stack_fds)
- kfree(bits);
-out_nofds:
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp,
- compat_ulong_t __user *, outp, compat_ulong_t __user *, exp,
- struct compat_timeval __user *, tvp)
-{
- struct timespec end_time, *to = NULL;
- struct compat_timeval tv;
- int ret;
-
- if (tvp) {
- if (copy_from_user(&tv, tvp, sizeof(tv)))
- return -EFAULT;
-
- to = &end_time;
- if (poll_select_set_timeout(to,
- tv.tv_sec + (tv.tv_usec / USEC_PER_SEC),
- (tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC))
- return -EINVAL;
- }
-
- ret = compat_core_sys_select(n, inp, outp, exp, to);
- ret = poll_select_copy_remaining(&end_time, tvp, 1, ret);
-
- return ret;
-}
-
-struct compat_sel_arg_struct {
- compat_ulong_t n;
- compat_uptr_t inp;
- compat_uptr_t outp;
- compat_uptr_t exp;
- compat_uptr_t tvp;
-};
-
-COMPAT_SYSCALL_DEFINE1(old_select, struct compat_sel_arg_struct __user *, arg)
-{
- struct compat_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));
-}
-
-static long do_compat_pselect(int n, compat_ulong_t __user *inp,
- compat_ulong_t __user *outp, compat_ulong_t __user *exp,
- struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask,
- compat_size_t sigsetsize)
-{
- compat_sigset_t ss32;
- sigset_t ksigmask, sigsaved;
- struct compat_timespec ts;
- struct timespec end_time, *to = NULL;
- int ret;
-
- if (tsp) {
- if (copy_from_user(&ts, tsp, sizeof(ts)))
- return -EFAULT;
-
- to = &end_time;
- if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
- return -EINVAL;
- }
-
- if (sigmask) {
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
- return -EFAULT;
- sigset_from_compat(&ksigmask, &ss32);
-
- sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
-
- ret = compat_core_sys_select(n, inp, outp, exp, to);
- ret = poll_select_copy_remaining(&end_time, tsp, 0, ret);
-
- if (ret == -ERESTARTNOHAND) {
- /*
- * Don't restore the signal mask yet. Let do_signal() deliver
- * the signal on the way back to userspace, before the signal
- * mask is restored.
- */
- if (sigmask) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- }
- } else if (sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
-
- return ret;
-}
-
-COMPAT_SYSCALL_DEFINE6(pselect6, int, n, compat_ulong_t __user *, inp,
- compat_ulong_t __user *, outp, compat_ulong_t __user *, exp,
- struct compat_timespec __user *, tsp, void __user *, sig)
-{
- compat_size_t sigsetsize = 0;
- compat_uptr_t up = 0;
-
- if (sig) {
- if (!access_ok(VERIFY_READ, sig,
- sizeof(compat_uptr_t)+sizeof(compat_size_t)) ||
- __get_user(up, (compat_uptr_t __user *)sig) ||
- __get_user(sigsetsize,
- (compat_size_t __user *)(sig+sizeof(up))))
- return -EFAULT;
- }
- return do_compat_pselect(n, inp, outp, exp, tsp, compat_ptr(up),
- sigsetsize);
-}
-
-COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds,
- unsigned int, nfds, struct compat_timespec __user *, tsp,
- const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize)
-{
- compat_sigset_t ss32;
- sigset_t ksigmask, sigsaved;
- struct compat_timespec ts;
- struct timespec end_time, *to = NULL;
- int ret;
-
- if (tsp) {
- if (copy_from_user(&ts, tsp, sizeof(ts)))
- return -EFAULT;
-
- to = &end_time;
- if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
- return -EINVAL;
- }
-
- if (sigmask) {
- if (sigsetsize != sizeof(compat_sigset_t))
- return -EINVAL;
- if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
- return -EFAULT;
- sigset_from_compat(&ksigmask, &ss32);
-
- sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
- }
-
- ret = do_sys_poll(ufds, nfds, to);
-
- /* We can restart this syscall, usually */
- if (ret == -EINTR) {
- /*
- * Don't restore the signal mask yet. Let do_signal() deliver
- * the signal on the way back to userspace, before the signal
- * mask is restored.
- */
- if (sigmask) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_restore_sigmask();
- }
- ret = -ERESTARTNOHAND;
- } else if (sigmask)
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
-
- ret = poll_select_copy_remaining(&end_time, tsp, 0, ret);
-
- return ret;
-}
-
-#ifdef CONFIG_FHANDLE
-/*
- * Exactly like fs/open.c:sys_open_by_handle_at(), except that it
- * doesn't set the O_LARGEFILE flag.
- */
-COMPAT_SYSCALL_DEFINE3(open_by_handle_at, int, mountdirfd,
- struct file_handle __user *, handle, int, flags)
-{
- return do_handle_open(mountdirfd, handle, flags);
-}
-#endif
diff --git a/fs/fcntl.c b/fs/fcntl.c
index be8fbe2..8bd81c2 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -23,6 +23,7 @@
#include <linux/pid_namespace.h>
#include <linux/user_namespace.h>
#include <linux/shmem_fs.h>
+#include <linux/compat.h>
#include <asm/poll.h>
#include <asm/siginfo.h>
@@ -420,6 +421,162 @@ SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd,
}
#endif
+#ifdef CONFIG_COMPAT
+static int get_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
+{
+ if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
+ __get_user(kfl->l_type, &ufl->l_type) ||
+ __get_user(kfl->l_whence, &ufl->l_whence) ||
+ __get_user(kfl->l_start, &ufl->l_start) ||
+ __get_user(kfl->l_len, &ufl->l_len) ||
+ __get_user(kfl->l_pid, &ufl->l_pid))
+ return -EFAULT;
+ return 0;
+}
+
+static int put_compat_flock(struct flock *kfl, struct compat_flock __user *ufl)
+{
+ if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) ||
+ __put_user(kfl->l_type, &ufl->l_type) ||
+ __put_user(kfl->l_whence, &ufl->l_whence) ||
+ __put_user(kfl->l_start, &ufl->l_start) ||
+ __put_user(kfl->l_len, &ufl->l_len) ||
+ __put_user(kfl->l_pid, &ufl->l_pid))
+ return -EFAULT;
+ return 0;
+}
+
+#ifndef HAVE_ARCH_GET_COMPAT_FLOCK64
+static int get_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl)
+{
+ if (!access_ok(VERIFY_READ, ufl, sizeof(*ufl)) ||
+ __get_user(kfl->l_type, &ufl->l_type) ||
+ __get_user(kfl->l_whence, &ufl->l_whence) ||
+ __get_user(kfl->l_start, &ufl->l_start) ||
+ __get_user(kfl->l_len, &ufl->l_len) ||
+ __get_user(kfl->l_pid, &ufl->l_pid))
+ return -EFAULT;
+ return 0;
+}
+#endif
+
+#ifndef HAVE_ARCH_PUT_COMPAT_FLOCK64
+static int put_compat_flock64(struct flock *kfl, struct compat_flock64 __user *ufl)
+{
+ if (!access_ok(VERIFY_WRITE, ufl, sizeof(*ufl)) ||
+ __put_user(kfl->l_type, &ufl->l_type) ||
+ __put_user(kfl->l_whence, &ufl->l_whence) ||
+ __put_user(kfl->l_start, &ufl->l_start) ||
+ __put_user(kfl->l_len, &ufl->l_len) ||
+ __put_user(kfl->l_pid, &ufl->l_pid))
+ return -EFAULT;
+ return 0;
+}
+#endif
+
+static unsigned int
+convert_fcntl_cmd(unsigned int cmd)
+{
+ switch (cmd) {
+ case F_GETLK64:
+ return F_GETLK;
+ case F_SETLK64:
+ return F_SETLK;
+ case F_SETLKW64:
+ return F_SETLKW;
+ }
+
+ return cmd;
+}
+
+COMPAT_SYSCALL_DEFINE3(fcntl64, unsigned int, fd, unsigned int, cmd,
+ compat_ulong_t, arg)
+{
+ mm_segment_t old_fs;
+ struct flock f;
+ long ret;
+ unsigned int conv_cmd;
+
+ switch (cmd) {
+ case F_GETLK:
+ case F_SETLK:
+ case F_SETLKW:
+ ret = get_compat_flock(&f, compat_ptr(arg));
+ if (ret != 0)
+ break;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ ret = sys_fcntl(fd, cmd, (unsigned long)&f);
+ set_fs(old_fs);
+ if (cmd == F_GETLK && ret == 0) {
+ /* GETLK was successful and we need to return the data...
+ * but it needs to fit in the compat structure.
+ * l_start shouldn't be too big, unless the original
+ * start + end is greater than COMPAT_OFF_T_MAX, in which
+ * case the app was asking for trouble, so we return
+ * -EOVERFLOW in that case.
+ * l_len could be too big, in which case we just truncate it,
+ * and only allow the app to see that part of the conflicting
+ * lock that might make sense to it anyway
+ */
+
+ if (f.l_start > COMPAT_OFF_T_MAX)
+ ret = -EOVERFLOW;
+ if (f.l_len > COMPAT_OFF_T_MAX)
+ f.l_len = COMPAT_OFF_T_MAX;
+ if (ret == 0)
+ ret = put_compat_flock(&f, compat_ptr(arg));
+ }
+ break;
+
+ case F_GETLK64:
+ case F_SETLK64:
+ case F_SETLKW64:
+ case F_OFD_GETLK:
+ case F_OFD_SETLK:
+ case F_OFD_SETLKW:
+ ret = get_compat_flock64(&f, compat_ptr(arg));
+ if (ret != 0)
+ break;
+ old_fs = get_fs();
+ set_fs(KERNEL_DS);
+ conv_cmd = convert_fcntl_cmd(cmd);
+ ret = sys_fcntl(fd, conv_cmd, (unsigned long)&f);
+ set_fs(old_fs);
+ if ((conv_cmd == F_GETLK || conv_cmd == F_OFD_GETLK) && ret == 0) {
+ /* need to return lock information - see above for commentary */
+ if (f.l_start > COMPAT_LOFF_T_MAX)
+ ret = -EOVERFLOW;
+ if (f.l_len > COMPAT_LOFF_T_MAX)
+ f.l_len = COMPAT_LOFF_T_MAX;
+ if (ret == 0)
+ ret = put_compat_flock64(&f, compat_ptr(arg));
+ }
+ break;
+
+ default:
+ ret = sys_fcntl(fd, cmd, arg);
+ break;
+ }
+ return ret;
+}
+
+COMPAT_SYSCALL_DEFINE3(fcntl, unsigned int, fd, unsigned int, cmd,
+ compat_ulong_t, arg)
+{
+ switch (cmd) {
+ case F_GETLK64:
+ case F_SETLK64:
+ case F_SETLKW64:
+ case F_OFD_GETLK:
+ case F_OFD_SETLK:
+ case F_OFD_SETLKW:
+ return -EINVAL;
+ }
+ return compat_sys_fcntl64(fd, cmd, arg);
+}
+#endif
+
/* Table to convert sigio signal codes into poll band bitmaps */
static const long band_table[NSIGPOLL] = {
diff --git a/fs/fhandle.c b/fs/fhandle.c
index 5559168..58a61f5 100644
--- a/fs/fhandle.c
+++ b/fs/fhandle.c
@@ -9,6 +9,7 @@
#include <linux/fsnotify.h>
#include <linux/personality.h>
#include <linux/uaccess.h>
+#include <linux/compat.h>
#include "internal.h"
#include "mount.h"
@@ -264,3 +265,15 @@ SYSCALL_DEFINE3(open_by_handle_at, int, mountdirfd,
ret = do_handle_open(mountdirfd, handle, flags);
return ret;
}
+
+#ifdef CONFIG_COMPAT
+/*
+ * Exactly like fs/open.c:sys_open_by_handle_at(), except that it
+ * doesn't set the O_LARGEFILE flag.
+ */
+COMPAT_SYSCALL_DEFINE3(open_by_handle_at, int, mountdirfd,
+ struct file_handle __user *, handle, int, flags)
+{
+ return do_handle_open(mountdirfd, handle, flags);
+}
+#endif
diff --git a/fs/internal.h b/fs/internal.h
index 11c6d89..076751d 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -108,8 +108,6 @@ extern struct file *do_filp_open(int dfd, struct filename *pathname,
extern struct file *do_file_open_root(struct dentry *, struct vfsmount *,
const char *, const struct open_flags *);
-extern long do_handle_open(int mountdirfd,
- struct file_handle __user *ufh, int open_flag);
extern int open_check_o_direct(struct file *f);
extern int vfs_open(const struct path *, struct file *, const struct cred *);
extern struct file *filp_clone_open(struct file *);
diff --git a/fs/open.c b/fs/open.c
index 949cef2..4d23f72 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -1078,6 +1078,26 @@ SYSCALL_DEFINE4(openat, int, dfd, const char __user *, filename, int, flags,
return do_sys_open(dfd, filename, flags, mode);
}
+#ifdef CONFIG_COMPAT
+/*
+ * Exactly like sys_open(), except that it doesn't set the
+ * O_LARGEFILE flag.
+ */
+COMPAT_SYSCALL_DEFINE3(open, const char __user *, filename, int, flags, umode_t, mode)
+{
+ return do_sys_open(AT_FDCWD, filename, flags, mode);
+}
+
+/*
+ * Exactly like sys_openat(), except that it doesn't set the
+ * O_LARGEFILE flag.
+ */
+COMPAT_SYSCALL_DEFINE4(openat, int, dfd, const char __user *, filename, int, flags, umode_t, mode)
+{
+ return do_sys_open(dfd, filename, flags, mode);
+}
+#endif
+
#ifndef __alpha__
/*
diff --git a/fs/read_write.c b/fs/read_write.c
index c4f88af..47c1d44 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -841,6 +841,81 @@ ssize_t rw_copy_check_uvector(int type, const struct iovec __user * uvector,
return ret;
}
+#ifdef CONFIG_COMPAT
+ssize_t compat_rw_copy_check_uvector(int type,
+ const struct compat_iovec __user *uvector, unsigned long nr_segs,
+ unsigned long fast_segs, struct iovec *fast_pointer,
+ struct iovec **ret_pointer)
+{
+ compat_ssize_t tot_len;
+ struct iovec *iov = *ret_pointer = fast_pointer;
+ ssize_t ret = 0;
+ int seg;
+
+ /*
+ * SuS says "The readv() function *may* fail if the iovcnt argument
+ * was less than or equal to 0, or greater than {IOV_MAX}. Linux has
+ * traditionally returned zero for zero segments, so...
+ */
+ if (nr_segs == 0)
+ goto out;
+
+ ret = -EINVAL;
+ if (nr_segs > UIO_MAXIOV)
+ goto out;
+ if (nr_segs > fast_segs) {
+ ret = -ENOMEM;
+ iov = kmalloc(nr_segs*sizeof(struct iovec), GFP_KERNEL);
+ if (iov == NULL)
+ goto out;
+ }
+ *ret_pointer = iov;
+
+ ret = -EFAULT;
+ if (!access_ok(VERIFY_READ, uvector, nr_segs*sizeof(*uvector)))
+ goto out;
+
+ /*
+ * Single unix specification:
+ * We should -EINVAL if an element length is not >= 0 and fitting an
+ * ssize_t.
+ *
+ * In Linux, the total length is limited to MAX_RW_COUNT, there is
+ * no overflow possibility.
+ */
+ tot_len = 0;
+ ret = -EINVAL;
+ for (seg = 0; seg < nr_segs; seg++) {
+ compat_uptr_t buf;
+ compat_ssize_t len;
+
+ if (__get_user(len, &uvector->iov_len) ||
+ __get_user(buf, &uvector->iov_base)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ if (len < 0) /* size_t not fitting in compat_ssize_t .. */
+ goto out;
+ if (type >= 0 &&
+ !access_ok(vrfy_dir(type), compat_ptr(buf), len)) {
+ ret = -EFAULT;
+ goto out;
+ }
+ if (len > MAX_RW_COUNT - tot_len)
+ len = MAX_RW_COUNT - tot_len;
+ tot_len += len;
+ iov->iov_base = compat_ptr(buf);
+ iov->iov_len = (compat_size_t) len;
+ uvector++;
+ iov++;
+ }
+ ret = tot_len;
+
+out:
+ return ret;
+}
+#endif
+
static ssize_t __do_readv_writev(int type, struct file *file,
struct iov_iter *iter, loff_t *pos, int flags)
{
diff --git a/fs/readdir.c b/fs/readdir.c
index 0e8a7f3..8965954 100644
--- a/fs/readdir.c
+++ b/fs/readdir.c
@@ -18,6 +18,7 @@
#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/unistd.h>
+#include <linux/compat.h>
#include <linux/uaccess.h>
@@ -324,3 +325,167 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd,
fdput_pos(f);
return error;
}
+
+#ifdef CONFIG_COMPAT
+struct compat_old_linux_dirent {
+ compat_ulong_t d_ino;
+ compat_ulong_t d_offset;
+ unsigned short d_namlen;
+ char d_name[1];
+};
+
+struct compat_readdir_callback {
+ struct dir_context ctx;
+ struct compat_old_linux_dirent __user *dirent;
+ int result;
+};
+
+static int compat_fillonedir(struct dir_context *ctx, const char *name,
+ int namlen, loff_t offset, u64 ino,
+ unsigned int d_type)
+{
+ struct compat_readdir_callback *buf =
+ container_of(ctx, struct compat_readdir_callback, ctx);
+ struct compat_old_linux_dirent __user *dirent;
+ compat_ulong_t d_ino;
+
+ if (buf->result)
+ return -EINVAL;
+ d_ino = ino;
+ if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
+ buf->result = -EOVERFLOW;
+ return -EOVERFLOW;
+ }
+ buf->result++;
+ dirent = buf->dirent;
+ if (!access_ok(VERIFY_WRITE, dirent,
+ (unsigned long)(dirent->d_name + namlen + 1) -
+ (unsigned long)dirent))
+ goto efault;
+ if ( __put_user(d_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))
+ goto efault;
+ return 0;
+efault:
+ buf->result = -EFAULT;
+ return -EFAULT;
+}
+
+COMPAT_SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
+ struct compat_old_linux_dirent __user *, dirent, unsigned int, count)
+{
+ int error;
+ struct fd f = fdget_pos(fd);
+ struct compat_readdir_callback buf = {
+ .ctx.actor = compat_fillonedir,
+ .dirent = dirent
+ };
+
+ if (!f.file)
+ return -EBADF;
+
+ error = iterate_dir(f.file, &buf.ctx);
+ if (buf.result)
+ error = buf.result;
+
+ fdput_pos(f);
+ return error;
+}
+
+struct compat_linux_dirent {
+ compat_ulong_t d_ino;
+ compat_ulong_t d_off;
+ unsigned short d_reclen;
+ char d_name[1];
+};
+
+struct compat_getdents_callback {
+ struct dir_context ctx;
+ struct compat_linux_dirent __user *current_dir;
+ struct compat_linux_dirent __user *previous;
+ int count;
+ int error;
+};
+
+static int compat_filldir(struct dir_context *ctx, const char *name, int namlen,
+ loff_t offset, u64 ino, unsigned int d_type)
+{
+ struct compat_linux_dirent __user * dirent;
+ struct compat_getdents_callback *buf =
+ container_of(ctx, struct compat_getdents_callback, ctx);
+ compat_ulong_t d_ino;
+ int reclen = ALIGN(offsetof(struct compat_linux_dirent, d_name) +
+ namlen + 2, sizeof(compat_long_t));
+
+ buf->error = -EINVAL; /* only used if we fail.. */
+ if (reclen > buf->count)
+ return -EINVAL;
+ d_ino = ino;
+ if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
+ buf->error = -EOVERFLOW;
+ return -EOVERFLOW;
+ }
+ dirent = buf->previous;
+ if (dirent) {
+ if (signal_pending(current))
+ return -EINTR;
+ if (__put_user(offset, &dirent->d_off))
+ goto efault;
+ }
+ dirent = buf->current_dir;
+ if (__put_user(d_ino, &dirent->d_ino))
+ goto efault;
+ if (__put_user(reclen, &dirent->d_reclen))
+ goto efault;
+ if (copy_to_user(dirent->d_name, name, namlen))
+ goto efault;
+ if (__put_user(0, dirent->d_name + namlen))
+ goto efault;
+ if (__put_user(d_type, (char __user *) dirent + reclen - 1))
+ goto efault;
+ buf->previous = dirent;
+ dirent = (void __user *)dirent + reclen;
+ buf->current_dir = dirent;
+ buf->count -= reclen;
+ return 0;
+efault:
+ buf->error = -EFAULT;
+ return -EFAULT;
+}
+
+COMPAT_SYSCALL_DEFINE3(getdents, unsigned int, fd,
+ struct compat_linux_dirent __user *, dirent, unsigned int, count)
+{
+ struct fd f;
+ struct compat_linux_dirent __user * lastdirent;
+ struct compat_getdents_callback buf = {
+ .ctx.actor = compat_filldir,
+ .current_dir = dirent,
+ .count = count
+ };
+ int error;
+
+ if (!access_ok(VERIFY_WRITE, dirent, count))
+ return -EFAULT;
+
+ f = fdget_pos(fd);
+ if (!f.file)
+ return -EBADF;
+
+ error = iterate_dir(f.file, &buf.ctx);
+ if (error >= 0)
+ error = buf.error;
+ lastdirent = buf.previous;
+ if (lastdirent) {
+ if (put_user(buf.ctx.pos, &lastdirent->d_off))
+ error = -EFAULT;
+ else
+ error = count - buf.count;
+ }
+ fdput_pos(f);
+ return error;
+}
+#endif
diff --git a/fs/select.c b/fs/select.c
index e211227..dd70937 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -338,6 +338,53 @@ static int poll_select_copy_remaining(struct timespec64 *end_time,
return ret;
}
+/*
+ * Scalable version of the fd_set.
+ */
+
+typedef struct {
+ unsigned long *in, *out, *ex;
+ unsigned long *res_in, *res_out, *res_ex;
+} fd_set_bits;
+
+/*
+ * How many longwords for "nr" bits?
+ */
+#define FDS_BITPERLONG (8*sizeof(long))
+#define FDS_LONGS(nr) (((nr)+FDS_BITPERLONG-1)/FDS_BITPERLONG)
+#define FDS_BYTES(nr) (FDS_LONGS(nr)*sizeof(long))
+
+/*
+ * We do a VERIFY_WRITE here even though we are only reading this time:
+ * we'll write to it eventually..
+ *
+ * Use "unsigned long" accesses to let user-mode fd_set's be long-aligned.
+ */
+static inline
+int get_fd_set(unsigned long nr, void __user *ufdset, unsigned long *fdset)
+{
+ nr = FDS_BYTES(nr);
+ if (ufdset)
+ return copy_from_user(fdset, ufdset, nr) ? -EFAULT : 0;
+
+ memset(fdset, 0, nr);
+ return 0;
+}
+
+static inline unsigned long __must_check
+set_fd_set(unsigned long nr, void __user *ufdset, unsigned long *fdset)
+{
+ if (ufdset)
+ return __copy_to_user(ufdset, fdset, FDS_BYTES(nr));
+ return 0;
+}
+
+static inline
+void zero_fd_set(unsigned long nr, unsigned long *fdset)
+{
+ memset(fdset, 0, FDS_BYTES(nr));
+}
+
#define FDS_IN(fds, n) (fds->in + n)
#define FDS_OUT(fds, n) (fds->out + n)
#define FDS_EX(fds, n) (fds->ex + n)
@@ -401,7 +448,7 @@ static inline void wait_key_set(poll_table *wait, unsigned long in,
wait->_key |= POLLOUT_SET;
}
-int do_select(int n, fd_set_bits *fds, struct timespec64 *end_time)
+static int do_select(int n, fd_set_bits *fds, struct timespec64 *end_time)
{
ktime_t expire, *to = NULL;
struct poll_wqueues table;
@@ -881,7 +928,7 @@ static int do_poll(struct poll_list *list, struct poll_wqueues *wait,
#define N_STACK_PPS ((sizeof(stack_pps) - sizeof(struct poll_list)) / \
sizeof(struct pollfd))
-int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds,
+static int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds,
struct timespec64 *end_time)
{
struct poll_wqueues table;
@@ -1053,3 +1100,373 @@ SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds, unsigned int, nfds,
return ret;
}
+
+#ifdef CONFIG_COMPAT
+#define __COMPAT_NFDBITS (8 * sizeof(compat_ulong_t))
+
+static
+int compat_poll_select_copy_remaining(struct timespec *end_time, void __user *p,
+ int timeval, int ret)
+{
+ struct timespec ts;
+
+ if (!p)
+ return ret;
+
+ if (current->personality & STICKY_TIMEOUTS)
+ goto sticky;
+
+ /* No update for zero timeout */
+ if (!end_time->tv_sec && !end_time->tv_nsec)
+ return ret;
+
+ ktime_get_ts(&ts);
+ ts = timespec_sub(*end_time, ts);
+ if (ts.tv_sec < 0)
+ ts.tv_sec = ts.tv_nsec = 0;
+
+ if (timeval) {
+ struct compat_timeval rtv;
+
+ rtv.tv_sec = ts.tv_sec;
+ rtv.tv_usec = ts.tv_nsec / NSEC_PER_USEC;
+
+ if (!copy_to_user(p, &rtv, sizeof(rtv)))
+ return ret;
+ } else {
+ struct compat_timespec rts;
+
+ rts.tv_sec = ts.tv_sec;
+ rts.tv_nsec = ts.tv_nsec;
+
+ if (!copy_to_user(p, &rts, sizeof(rts)))
+ return ret;
+ }
+ /*
+ * If an application puts its timeval in read-only memory, we
+ * don't want the Linux-specific update to the timeval to
+ * cause a fault after the select has completed
+ * successfully. However, because we're not updating the
+ * timeval, we can't restart the system call.
+ */
+
+sticky:
+ if (ret == -ERESTARTNOHAND)
+ ret = -EINTR;
+ return ret;
+}
+
+/*
+ * Ooo, nasty. We need here to frob 32-bit unsigned longs to
+ * 64-bit unsigned longs.
+ */
+static
+int compat_get_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
+ unsigned long *fdset)
+{
+ nr = DIV_ROUND_UP(nr, __COMPAT_NFDBITS);
+ if (ufdset) {
+ unsigned long odd;
+
+ if (!access_ok(VERIFY_WRITE, ufdset, nr*sizeof(compat_ulong_t)))
+ return -EFAULT;
+
+ odd = nr & 1UL;
+ nr &= ~1UL;
+ while (nr) {
+ unsigned long h, l;
+ if (__get_user(l, ufdset) || __get_user(h, ufdset+1))
+ return -EFAULT;
+ ufdset += 2;
+ *fdset++ = h << 32 | l;
+ nr -= 2;
+ }
+ if (odd && __get_user(*fdset, ufdset))
+ return -EFAULT;
+ } else {
+ /* Tricky, must clear full unsigned long in the
+ * kernel fdset at the end, this makes sure that
+ * actually happens.
+ */
+ memset(fdset, 0, ((nr + 1) & ~1)*sizeof(compat_ulong_t));
+ }
+ return 0;
+}
+
+static
+int compat_set_fd_set(unsigned long nr, compat_ulong_t __user *ufdset,
+ unsigned long *fdset)
+{
+ unsigned long odd;
+ nr = DIV_ROUND_UP(nr, __COMPAT_NFDBITS);
+
+ if (!ufdset)
+ return 0;
+
+ odd = nr & 1UL;
+ nr &= ~1UL;
+ while (nr) {
+ unsigned long h, l;
+ l = *fdset++;
+ h = l >> 32;
+ if (__put_user(l, ufdset) || __put_user(h, ufdset+1))
+ return -EFAULT;
+ ufdset += 2;
+ nr -= 2;
+ }
+ if (odd && __put_user(*fdset, ufdset))
+ return -EFAULT;
+ return 0;
+}
+
+
+/*
+ * This is a virtual copy of sys_select from fs/select.c and probably
+ * should be compared to it from time to time
+ */
+
+/*
+ * 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.
+ */
+static int compat_core_sys_select(int n, compat_ulong_t __user *inp,
+ compat_ulong_t __user *outp, compat_ulong_t __user *exp,
+ struct timespec *end_time)
+{
+ fd_set_bits fds;
+ void *bits;
+ int size, max_fds, ret = -EINVAL;
+ struct fdtable *fdt;
+ long stack_fds[SELECT_STACK_ALLOC/sizeof(long)];
+
+ if (n < 0)
+ goto out_nofds;
+
+ /* max_fds can increase, so grab it once to avoid race */
+ rcu_read_lock();
+ fdt = files_fdtable(current->files);
+ max_fds = fdt->max_fds;
+ rcu_read_unlock();
+ if (n > max_fds)
+ n = max_fds;
+
+ /*
+ * 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.
+ */
+ size = FDS_BYTES(n);
+ bits = stack_fds;
+ if (size > sizeof(stack_fds) / 6) {
+ bits = kmalloc(6 * size, GFP_KERNEL);
+ ret = -ENOMEM;
+ 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 = compat_get_fd_set(n, inp, fds.in)) ||
+ (ret = compat_get_fd_set(n, outp, fds.out)) ||
+ (ret = compat_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, end_time);
+
+ if (ret < 0)
+ goto out;
+ if (!ret) {
+ ret = -ERESTARTNOHAND;
+ if (signal_pending(current))
+ goto out;
+ ret = 0;
+ }
+
+ if (compat_set_fd_set(n, inp, fds.res_in) ||
+ compat_set_fd_set(n, outp, fds.res_out) ||
+ compat_set_fd_set(n, exp, fds.res_ex))
+ ret = -EFAULT;
+out:
+ if (bits != stack_fds)
+ kfree(bits);
+out_nofds:
+ return ret;
+}
+
+COMPAT_SYSCALL_DEFINE5(select, int, n, compat_ulong_t __user *, inp,
+ compat_ulong_t __user *, outp, compat_ulong_t __user *, exp,
+ struct compat_timeval __user *, tvp)
+{
+ struct timespec end_time, *to = NULL;
+ struct compat_timeval tv;
+ int ret;
+
+ if (tvp) {
+ if (copy_from_user(&tv, tvp, sizeof(tv)))
+ return -EFAULT;
+
+ to = &end_time;
+ if (poll_select_set_timeout(to,
+ tv.tv_sec + (tv.tv_usec / USEC_PER_SEC),
+ (tv.tv_usec % USEC_PER_SEC) * NSEC_PER_USEC))
+ return -EINVAL;
+ }
+
+ ret = compat_core_sys_select(n, inp, outp, exp, to);
+ ret = compat_poll_select_copy_remaining(&end_time, tvp, 1, ret);
+
+ return ret;
+}
+
+struct compat_sel_arg_struct {
+ compat_ulong_t n;
+ compat_uptr_t inp;
+ compat_uptr_t outp;
+ compat_uptr_t exp;
+ compat_uptr_t tvp;
+};
+
+COMPAT_SYSCALL_DEFINE1(old_select, struct compat_sel_arg_struct __user *, arg)
+{
+ struct compat_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));
+}
+
+static long do_compat_pselect(int n, compat_ulong_t __user *inp,
+ compat_ulong_t __user *outp, compat_ulong_t __user *exp,
+ struct compat_timespec __user *tsp, compat_sigset_t __user *sigmask,
+ compat_size_t sigsetsize)
+{
+ compat_sigset_t ss32;
+ sigset_t ksigmask, sigsaved;
+ struct compat_timespec ts;
+ struct timespec end_time, *to = NULL;
+ int ret;
+
+ if (tsp) {
+ if (copy_from_user(&ts, tsp, sizeof(ts)))
+ return -EFAULT;
+
+ to = &end_time;
+ if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
+ return -EINVAL;
+ }
+
+ if (sigmask) {
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+ if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
+ return -EFAULT;
+ sigset_from_compat(&ksigmask, &ss32);
+
+ sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
+ sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ }
+
+ ret = compat_core_sys_select(n, inp, outp, exp, to);
+ ret = compat_poll_select_copy_remaining(&end_time, tsp, 0, ret);
+
+ if (ret == -ERESTARTNOHAND) {
+ /*
+ * Don't restore the signal mask yet. Let do_signal() deliver
+ * the signal on the way back to userspace, before the signal
+ * mask is restored.
+ */
+ if (sigmask) {
+ memcpy(¤t->saved_sigmask, &sigsaved,
+ sizeof(sigsaved));
+ set_restore_sigmask();
+ }
+ } else if (sigmask)
+ sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+
+ return ret;
+}
+
+COMPAT_SYSCALL_DEFINE6(pselect6, int, n, compat_ulong_t __user *, inp,
+ compat_ulong_t __user *, outp, compat_ulong_t __user *, exp,
+ struct compat_timespec __user *, tsp, void __user *, sig)
+{
+ compat_size_t sigsetsize = 0;
+ compat_uptr_t up = 0;
+
+ if (sig) {
+ if (!access_ok(VERIFY_READ, sig,
+ sizeof(compat_uptr_t)+sizeof(compat_size_t)) ||
+ __get_user(up, (compat_uptr_t __user *)sig) ||
+ __get_user(sigsetsize,
+ (compat_size_t __user *)(sig+sizeof(up))))
+ return -EFAULT;
+ }
+ return do_compat_pselect(n, inp, outp, exp, tsp, compat_ptr(up),
+ sigsetsize);
+}
+
+COMPAT_SYSCALL_DEFINE5(ppoll, struct pollfd __user *, ufds,
+ unsigned int, nfds, struct compat_timespec __user *, tsp,
+ const compat_sigset_t __user *, sigmask, compat_size_t, sigsetsize)
+{
+ compat_sigset_t ss32;
+ sigset_t ksigmask, sigsaved;
+ struct compat_timespec ts;
+ struct timespec end_time, *to = NULL;
+ int ret;
+
+ if (tsp) {
+ if (copy_from_user(&ts, tsp, sizeof(ts)))
+ return -EFAULT;
+
+ to = &end_time;
+ if (poll_select_set_timeout(to, ts.tv_sec, ts.tv_nsec))
+ return -EINVAL;
+ }
+
+ if (sigmask) {
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+ if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
+ return -EFAULT;
+ sigset_from_compat(&ksigmask, &ss32);
+
+ sigdelsetmask(&ksigmask, sigmask(SIGKILL)|sigmask(SIGSTOP));
+ sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ }
+
+ ret = do_sys_poll(ufds, nfds, to);
+
+ /* We can restart this syscall, usually */
+ if (ret == -EINTR) {
+ /*
+ * Don't restore the signal mask yet. Let do_signal() deliver
+ * the signal on the way back to userspace, before the signal
+ * mask is restored.
+ */
+ if (sigmask) {
+ memcpy(¤t->saved_sigmask, &sigsaved,
+ sizeof(sigsaved));
+ set_restore_sigmask();
+ }
+ ret = -ERESTARTNOHAND;
+ } else if (sigmask)
+ sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+
+ ret = compat_poll_select_copy_remaining(&end_time, tsp, 0, ret);
+
+ return ret;
+}
+#endif
diff --git a/fs/stat.c b/fs/stat.c
index a257b87..f494b18 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -15,6 +15,7 @@
#include <linux/cred.h>
#include <linux/syscalls.h>
#include <linux/pagemap.h>
+#include <linux/compat.h>
#include <linux/uaccess.h>
#include <asm/unistd.h>
@@ -575,6 +576,91 @@ SYSCALL_DEFINE5(statx,
return cp_statx(&stat, buffer);
}
+#ifdef CONFIG_COMPAT
+static int cp_compat_stat(struct kstat *stat, struct compat_stat __user *ubuf)
+{
+ struct compat_stat tmp;
+
+ if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
+ return -EOVERFLOW;
+
+ memset(&tmp, 0, sizeof(tmp));
+ tmp.st_dev = old_encode_dev(stat->dev);
+ tmp.st_ino = stat->ino;
+ if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
+ return -EOVERFLOW;
+ tmp.st_mode = stat->mode;
+ tmp.st_nlink = stat->nlink;
+ if (tmp.st_nlink != stat->nlink)
+ return -EOVERFLOW;
+ SET_UID(tmp.st_uid, from_kuid_munged(current_user_ns(), stat->uid));
+ SET_GID(tmp.st_gid, from_kgid_munged(current_user_ns(), stat->gid));
+ tmp.st_rdev = old_encode_dev(stat->rdev);
+ if ((u64) stat->size > MAX_NON_LFS)
+ return -EOVERFLOW;
+ tmp.st_size = stat->size;
+ tmp.st_atime = stat->atime.tv_sec;
+ tmp.st_atime_nsec = stat->atime.tv_nsec;
+ tmp.st_mtime = stat->mtime.tv_sec;
+ tmp.st_mtime_nsec = stat->mtime.tv_nsec;
+ tmp.st_ctime = stat->ctime.tv_sec;
+ tmp.st_ctime_nsec = stat->ctime.tv_nsec;
+ tmp.st_blocks = stat->blocks;
+ tmp.st_blksize = stat->blksize;
+ return copy_to_user(ubuf, &tmp, sizeof(tmp)) ? -EFAULT : 0;
+}
+
+COMPAT_SYSCALL_DEFINE2(newstat, const char __user *, filename,
+ struct compat_stat __user *, statbuf)
+{
+ struct kstat stat;
+ int error;
+
+ error = vfs_stat(filename, &stat);
+ if (error)
+ return error;
+ return cp_compat_stat(&stat, statbuf);
+}
+
+COMPAT_SYSCALL_DEFINE2(newlstat, const char __user *, filename,
+ struct compat_stat __user *, statbuf)
+{
+ struct kstat stat;
+ int error;
+
+ error = vfs_lstat(filename, &stat);
+ if (error)
+ return error;
+ return cp_compat_stat(&stat, statbuf);
+}
+
+#ifndef __ARCH_WANT_STAT64
+COMPAT_SYSCALL_DEFINE4(newfstatat, unsigned int, dfd,
+ const char __user *, filename,
+ struct compat_stat __user *, statbuf, int, flag)
+{
+ struct kstat stat;
+ int error;
+
+ error = vfs_fstatat(dfd, filename, &stat, flag);
+ if (error)
+ return error;
+ return cp_compat_stat(&stat, statbuf);
+}
+#endif
+
+COMPAT_SYSCALL_DEFINE2(newfstat, unsigned int, fd,
+ struct compat_stat __user *, statbuf)
+{
+ struct kstat stat;
+ int error = vfs_fstat(fd, &stat);
+
+ if (!error)
+ error = cp_compat_stat(&stat, statbuf);
+ return error;
+}
+#endif
+
/* Caller is here responsible for sufficient locking (ie. inode->i_lock) */
void __inode_add_bytes(struct inode *inode, loff_t bytes)
{
diff --git a/fs/statfs.c b/fs/statfs.c
index 13ae259..4e4623c 100644
--- a/fs/statfs.c
+++ b/fs/statfs.c
@@ -7,6 +7,7 @@
#include <linux/statfs.h>
#include <linux/security.h>
#include <linux/uaccess.h>
+#include <linux/compat.h>
#include "internal.h"
static int flags_by_mnt(int mnt_flags)
@@ -239,3 +240,142 @@ SYSCALL_DEFINE2(ustat, unsigned, dev, struct ustat __user *, ubuf)
return copy_to_user(ubuf, &tmp, sizeof(struct ustat)) ? -EFAULT : 0;
}
+
+#ifdef CONFIG_COMPAT
+static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *kbuf)
+{
+ if (sizeof ubuf->f_blocks == 4) {
+ if ((kbuf->f_blocks | kbuf->f_bfree | kbuf->f_bavail |
+ kbuf->f_bsize | kbuf->f_frsize) & 0xffffffff00000000ULL)
+ return -EOVERFLOW;
+ /* f_files and f_ffree may be -1; it's okay
+ * to stuff that into 32 bits */
+ if (kbuf->f_files != 0xffffffffffffffffULL
+ && (kbuf->f_files & 0xffffffff00000000ULL))
+ return -EOVERFLOW;
+ if (kbuf->f_ffree != 0xffffffffffffffffULL
+ && (kbuf->f_ffree & 0xffffffff00000000ULL))
+ return -EOVERFLOW;
+ }
+ if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
+ __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]) ||
+ __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
+ __put_user(kbuf->f_flags, &ubuf->f_flags) ||
+ __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
+ return -EFAULT;
+ return 0;
+}
+
+/*
+ * The following statfs calls are copies of code from fs/statfs.c and
+ * should be checked against those from time to time
+ */
+COMPAT_SYSCALL_DEFINE2(statfs, const char __user *, pathname, struct compat_statfs __user *, buf)
+{
+ struct kstatfs tmp;
+ int error = user_statfs(pathname, &tmp);
+ if (!error)
+ error = put_compat_statfs(buf, &tmp);
+ return error;
+}
+
+COMPAT_SYSCALL_DEFINE2(fstatfs, unsigned int, fd, struct compat_statfs __user *, buf)
+{
+ struct kstatfs tmp;
+ int error = fd_statfs(fd, &tmp);
+ if (!error)
+ error = put_compat_statfs(buf, &tmp);
+ return error;
+}
+
+static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstatfs *kbuf)
+{
+ if (sizeof(ubuf->f_bsize) == 4) {
+ if ((kbuf->f_type | kbuf->f_bsize | kbuf->f_namelen |
+ kbuf->f_frsize | kbuf->f_flags) & 0xffffffff00000000ULL)
+ return -EOVERFLOW;
+ /* f_files and f_ffree may be -1; it's okay
+ * to stuff that into 32 bits */
+ if (kbuf->f_files != 0xffffffffffffffffULL
+ && (kbuf->f_files & 0xffffffff00000000ULL))
+ return -EOVERFLOW;
+ if (kbuf->f_ffree != 0xffffffffffffffffULL
+ && (kbuf->f_ffree & 0xffffffff00000000ULL))
+ return -EOVERFLOW;
+ }
+ if (!access_ok(VERIFY_WRITE, ubuf, sizeof(*ubuf)) ||
+ __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]) ||
+ __put_user(kbuf->f_frsize, &ubuf->f_frsize) ||
+ __put_user(kbuf->f_flags, &ubuf->f_flags) ||
+ __clear_user(ubuf->f_spare, sizeof(ubuf->f_spare)))
+ return -EFAULT;
+ return 0;
+}
+
+COMPAT_SYSCALL_DEFINE3(statfs64, const char __user *, pathname, compat_size_t, sz, struct compat_statfs64 __user *, buf)
+{
+ struct kstatfs tmp;
+ int error;
+
+ if (sz != sizeof(*buf))
+ return -EINVAL;
+
+ error = user_statfs(pathname, &tmp);
+ if (!error)
+ error = put_compat_statfs64(buf, &tmp);
+ return error;
+}
+
+COMPAT_SYSCALL_DEFINE3(fstatfs64, unsigned int, fd, compat_size_t, sz, struct compat_statfs64 __user *, buf)
+{
+ struct kstatfs tmp;
+ int error;
+
+ if (sz != sizeof(*buf))
+ return -EINVAL;
+
+ error = fd_statfs(fd, &tmp);
+ if (!error)
+ error = put_compat_statfs64(buf, &tmp);
+ return error;
+}
+
+/*
+ * This is a copy of sys_ustat, just dealing with a structure layout.
+ * Given how simple this syscall is that apporach is more maintainable
+ * than the various conversion hacks.
+ */
+COMPAT_SYSCALL_DEFINE2(ustat, unsigned, dev, struct compat_ustat __user *, u)
+{
+ struct compat_ustat tmp;
+ struct kstatfs sbuf;
+ int err = vfs_ustat(new_decode_dev(dev), &sbuf);
+ if (err)
+ return err;
+
+ memset(&tmp, 0, sizeof(struct compat_ustat));
+ tmp.f_tfree = sbuf.f_bfree;
+ tmp.f_tinode = sbuf.f_ffree;
+ if (copy_to_user(u, &tmp, sizeof(struct compat_ustat)))
+ return -EFAULT;
+ return 0;
+}
+#endif
diff --git a/fs/utimes.c b/fs/utimes.c
index 32b15b3..6571d8c 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -1,14 +1,10 @@
-#include <linux/compiler.h>
#include <linux/file.h>
-#include <linux/fs.h>
-#include <linux/linkage.h>
#include <linux/mount.h>
#include <linux/namei.h>
-#include <linux/sched.h>
-#include <linux/stat.h>
#include <linux/utime.h>
#include <linux/syscalls.h>
#include <linux/uaccess.h>
+#include <linux/compat.h>
#include <asm/unistd.h>
#ifdef __ARCH_WANT_SYS_UTIME
@@ -219,3 +215,63 @@ SYSCALL_DEFINE2(utimes, char __user *, filename,
{
return sys_futimesat(AT_FDCWD, filename, utimes);
}
+
+#ifdef CONFIG_COMPAT
+/*
+ * Not all architectures have sys_utime, so implement this in terms
+ * of sys_utimes.
+ */
+COMPAT_SYSCALL_DEFINE2(utime, const char __user *, filename,
+ struct compat_utimbuf __user *, t)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (get_user(tv[0].tv_sec, &t->actime) ||
+ get_user(tv[1].tv_sec, &t->modtime))
+ return -EFAULT;
+ tv[0].tv_nsec = 0;
+ tv[1].tv_nsec = 0;
+ }
+ return do_utimes(AT_FDCWD, filename, t ? tv : NULL, 0);
+}
+
+COMPAT_SYSCALL_DEFINE4(utimensat, unsigned int, dfd, const char __user *, filename, struct compat_timespec __user *, t, int, flags)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (compat_get_timespec(&tv[0], &t[0]) ||
+ compat_get_timespec(&tv[1], &t[1]))
+ return -EFAULT;
+
+ if (tv[0].tv_nsec == UTIME_OMIT && tv[1].tv_nsec == UTIME_OMIT)
+ return 0;
+ }
+ return do_utimes(dfd, filename, t ? tv : NULL, flags);
+}
+
+COMPAT_SYSCALL_DEFINE3(futimesat, unsigned int, dfd, const char __user *, filename, struct compat_timeval __user *, t)
+{
+ struct timespec tv[2];
+
+ if (t) {
+ if (get_user(tv[0].tv_sec, &t[0].tv_sec) ||
+ get_user(tv[0].tv_nsec, &t[0].tv_usec) ||
+ get_user(tv[1].tv_sec, &t[1].tv_sec) ||
+ get_user(tv[1].tv_nsec, &t[1].tv_usec))
+ return -EFAULT;
+ if (tv[0].tv_nsec >= 1000000 || tv[0].tv_nsec < 0 ||
+ tv[1].tv_nsec >= 1000000 || tv[1].tv_nsec < 0)
+ return -EINVAL;
+ tv[0].tv_nsec *= 1000;
+ tv[1].tv_nsec *= 1000;
+ }
+ return do_utimes(dfd, filename, t ? tv : NULL, 0);
+}
+
+COMPAT_SYSCALL_DEFINE2(utimes, const char __user *, filename, struct compat_timeval __user *, t)
+{
+ return compat_sys_futimesat(AT_FDCWD, filename, t);
+}
+#endif
diff --git a/include/linux/compat.h b/include/linux/compat.h
index af9dbc4..8172b03 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -528,11 +528,6 @@ asmlinkage long compat_sys_old_readdir(unsigned int fd,
asmlinkage long compat_sys_getdents(unsigned int fd,
struct compat_linux_dirent __user *dirent,
unsigned int count);
-#ifdef __ARCH_WANT_COMPAT_SYS_GETDENTS64
-asmlinkage long compat_sys_getdents64(unsigned int fd,
- struct linux_dirent64 __user *dirent,
- unsigned int count);
-#endif
asmlinkage long compat_sys_vmsplice(int fd, const struct compat_iovec __user *,
unsigned int nr_segs, unsigned int flags);
asmlinkage long compat_sys_open(const char __user *filename, int flags,
diff --git a/include/linux/poll.h b/include/linux/poll.h
index a46d675..75ffc57 100644
--- a/include/linux/poll.h
+++ b/include/linux/poll.h
@@ -98,64 +98,8 @@ extern int poll_schedule_timeout(struct poll_wqueues *pwq, int state,
ktime_t *expires, unsigned long slack);
extern u64 select_estimate_accuracy(struct timespec64 *tv);
-
-static inline int poll_schedule(struct poll_wqueues *pwq, int state)
-{
- return poll_schedule_timeout(pwq, state, NULL, 0);
-}
-
-/*
- * Scalable version of the fd_set.
- */
-
-typedef struct {
- unsigned long *in, *out, *ex;
- unsigned long *res_in, *res_out, *res_ex;
-} fd_set_bits;
-
-/*
- * How many longwords for "nr" bits?
- */
-#define FDS_BITPERLONG (8*sizeof(long))
-#define FDS_LONGS(nr) (((nr)+FDS_BITPERLONG-1)/FDS_BITPERLONG)
-#define FDS_BYTES(nr) (FDS_LONGS(nr)*sizeof(long))
-
-/*
- * We do a VERIFY_WRITE here even though we are only reading this time:
- * we'll write to it eventually..
- *
- * Use "unsigned long" accesses to let user-mode fd_set's be long-aligned.
- */
-static inline
-int get_fd_set(unsigned long nr, void __user *ufdset, unsigned long *fdset)
-{
- nr = FDS_BYTES(nr);
- if (ufdset)
- return copy_from_user(fdset, ufdset, nr) ? -EFAULT : 0;
-
- memset(fdset, 0, nr);
- return 0;
-}
-
-static inline unsigned long __must_check
-set_fd_set(unsigned long nr, void __user *ufdset, unsigned long *fdset)
-{
- if (ufdset)
- return __copy_to_user(ufdset, fdset, FDS_BYTES(nr));
- return 0;
-}
-
-static inline
-void zero_fd_set(unsigned long nr, unsigned long *fdset)
-{
- memset(fdset, 0, FDS_BYTES(nr));
-}
-
#define MAX_INT64_SECONDS (((s64)(~((u64)0)>>1)/HZ)-1)
-extern int do_select(int n, fd_set_bits *fds, struct timespec64 *end_time);
-extern int do_sys_poll(struct pollfd __user * ufds, unsigned int nfds,
- struct timespec64 *end_time);
extern int core_sys_select(int n, fd_set __user *inp, fd_set __user *outp,
fd_set __user *exp, struct timespec64 *end_time);
diff --git a/include/uapi/asm-generic/unistd.h b/include/uapi/asm-generic/unistd.h
index a076cf1..061185a 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -194,8 +194,7 @@ __SYSCALL(__NR_quotactl, sys_quotactl)
/* fs/readdir.c */
#define __NR_getdents64 61
-#define __ARCH_WANT_COMPAT_SYS_GETDENTS64
-__SC_COMP(__NR_getdents64, sys_getdents64, compat_sys_getdents64)
+__SYSCALL(__NR_getdents64, sys_getdents64)
/* fs/read_write.c */
#define __NR3264_lseek 62
