fix compat truncate/ftruncate
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/arm64/include/asm/unistd32.h b/arch/arm64/include/asm/unistd32.h
index 8153f1a..12f2249 100644
--- a/arch/arm64/include/asm/unistd32.h
+++ b/arch/arm64/include/asm/unistd32.h
@@ -113,8 +113,8 @@
__SYSCALL(89, sys_ni_syscall) /* 89 was sys_readdir */
__SYSCALL(90, sys_ni_syscall) /* 90 was sys_mmap */
__SYSCALL(91, sys_munmap)
-__SYSCALL(92, sys_truncate)
-__SYSCALL(93, sys_ftruncate)
+__SYSCALL(92, compat_sys_truncate)
+__SYSCALL(93, compat_sys_ftruncate)
__SYSCALL(94, sys_fchmod)
__SYSCALL(95, sys_fchown16)
__SYSCALL(96, sys_getpriority)
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 063cd0d..20b100f 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -284,8 +284,8 @@
PTR compat_sys_old_readdir
PTR sys_mips_mmap /* 4090 */
PTR sys_munmap
- PTR sys_truncate
- PTR sys_ftruncate
+ PTR compat_sys_truncate
+ PTR compat_sys_ftruncate
PTR sys_fchmod
PTR sys_fchown /* 4095 */
PTR sys_getpriority
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index d0efc0a..884b91b 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -165,8 +165,8 @@
ENTRY_SAME(mmap2)
ENTRY_SAME(mmap) /* 90 */
ENTRY_SAME(munmap)
- ENTRY_SAME(truncate)
- ENTRY_SAME(ftruncate)
+ ENTRY_COMP(truncate)
+ ENTRY_COMP(ftruncate)
ENTRY_SAME(fchmod)
ENTRY_SAME(fchown) /* 95 */
ENTRY_SAME(getpriority)
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index 5677a36..d0bafc0 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -146,18 +146,6 @@
(off_t __user *)offset, count);
}
-long compat_sys_truncate(const char __user * path, u32 length)
-{
- /* sign extend length */
- return sys_truncate(path, (int)length);
-}
-
-long compat_sys_ftruncate(int fd, u32 length)
-{
- /* sign extend length */
- return sys_ftruncate(fd, (int)length);
-}
-
unsigned long compat_sys_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 2b1a3a0..3c98c4d 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -325,16 +325,6 @@
llgfr %r3,%r3 # size_t
jg sys_munmap # branch to system call
-ENTRY(sys32_truncate_wrapper)
- llgtr %r2,%r2 # const char *
- lgfr %r3,%r3 # long
- jg sys_truncate # branch to system call
-
-ENTRY(sys32_ftruncate_wrapper)
- llgfr %r2,%r2 # unsigned int
- llgfr %r3,%r3 # unsigned long
- jg sys_ftruncate # branch to system call
-
ENTRY(sys32_fchmod_wrapper)
llgfr %r2,%r2 # unsigned int
llgfr %r3,%r3 # mode_t
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 0e5262f..630b935 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -100,8 +100,8 @@
SYSCALL(sys_ni_syscall,sys_ni_syscall,old32_readdir_wrapper) /* old readdir syscall */
SYSCALL(sys_old_mmap,sys_old_mmap,old32_mmap_wrapper) /* 90 */
SYSCALL(sys_munmap,sys_munmap,sys32_munmap_wrapper)
-SYSCALL(sys_truncate,sys_truncate,sys32_truncate_wrapper)
-SYSCALL(sys_ftruncate,sys_ftruncate,sys32_ftruncate_wrapper)
+SYSCALL(sys_truncate,sys_truncate,compat_sys_truncate)
+SYSCALL(sys_ftruncate,sys_ftruncate,compat_sys_ftruncate)
SYSCALL(sys_fchmod,sys_fchmod,sys32_fchmod_wrapper)
SYSCALL(sys_fchown16,sys_ni_syscall,sys32_fchown16_wrapper) /* 95 old fchown16 syscall*/
SYSCALL(sys_getpriority,sys_getpriority,sys32_getpriority_wrapper)
diff --git a/arch/sparc/kernel/sys32.S b/arch/sparc/kernel/sys32.S
index be3d65a..240a3ce 100644
--- a/arch/sparc/kernel/sys32.S
+++ b/arch/sparc/kernel/sys32.S
@@ -52,7 +52,6 @@
SIGN1(sys32_sendmsg, compat_sys_sendmsg, %o0)
SIGN2(sys32_sync_file_range, compat_sync_file_range, %o0, %o5)
SIGN1(sys32_vmsplice, compat_sys_vmsplice, %o0)
-SIGN1(sys32_truncate, sys_truncate, %o1)
.globl sys32_mmap2
sys32_mmap2:
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index 9ed517c..0881348 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -43,8 +43,8 @@
/*110*/ .word sys_setresgid, sys_getresgid, sys_setregid, sys_nis_syscall, sys_nis_syscall
.word sys_getgroups, compat_sys_gettimeofday, sys32_getrusage, sys_nis_syscall, sys_getcwd
/*120*/ .word compat_sys_readv, compat_sys_writev, compat_sys_settimeofday, sys_fchown16, sys_fchmod
- .word sys_nis_syscall, sys_setreuid16, sys_setregid16, sys_rename, sys32_truncate
-/*130*/ .word sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall
+ .word sys_nis_syscall, sys_setreuid16, sys_setregid16, sys_rename, compat_sys_truncate
+/*130*/ .word compat_sys_ftruncate, sys_flock, compat_sys_lstat64, sys_nis_syscall, sys_nis_syscall
.word sys_nis_syscall, sys_mkdir, sys_rmdir, compat_sys_utimes, compat_sys_stat64
/*140*/ .word sys_sendfile64, sys_nis_syscall, sys32_futex, sys_gettid, compat_sys_getrlimit
.word compat_sys_setrlimit, sys_pivot_root, sys_prctl, sys_pciconfig_read, sys_pciconfig_write
diff --git a/arch/x86/syscalls/syscall_32.tbl b/arch/x86/syscalls/syscall_32.tbl
index f51810b..e6d55f0 100644
--- a/arch/x86/syscalls/syscall_32.tbl
+++ b/arch/x86/syscalls/syscall_32.tbl
@@ -98,8 +98,8 @@
89 i386 readdir sys_old_readdir compat_sys_old_readdir
90 i386 mmap sys_old_mmap sys32_mmap
91 i386 munmap sys_munmap
-92 i386 truncate sys_truncate
-93 i386 ftruncate sys_ftruncate
+92 i386 truncate sys_truncate compat_sys_truncate
+93 i386 ftruncate sys_ftruncate compat_sys_ftruncate
94 i386 fchmod sys_fchmod
95 i386 fchown sys_fchown16
96 i386 getpriority sys_getpriority
diff --git a/fs/open.c b/fs/open.c
index 9b33c0cb..669ba0d 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -30,6 +30,7 @@
#include <linux/fs_struct.h>
#include <linux/ima.h>
#include <linux/dnotify.h>
+#include <linux/compat.h>
#include "internal.h"
@@ -140,6 +141,13 @@
return do_sys_truncate(path, length);
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(truncate, const char __user *, path, compat_off_t, length)
+{
+ return do_sys_truncate(path, length);
+}
+#endif
+
static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
{
struct inode *inode;
@@ -195,6 +203,13 @@
return ret;
}
+#ifdef CONFIG_COMPAT
+COMPAT_SYSCALL_DEFINE2(ftruncate, unsigned int, fd, compat_ulong_t, length)
+{
+ return do_sys_ftruncate(fd, length, 1);
+}
+#endif
+
/* LFS versions of truncate are only needed on 32 bit machines */
#if BITS_PER_LONG == 32
SYSCALL_DEFINE(truncate64)(const char __user * path, loff_t length)
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 59c7204..76a87fb 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -536,6 +536,8 @@
asmlinkage long compat_sys_open_by_handle_at(int mountdirfd,
struct file_handle __user *handle,
int flags);
+asmlinkage long compat_sys_truncate(const char __user *, compat_off_t);
+asmlinkage long compat_sys_ftruncate(unsigned int, compat_ulong_t);
asmlinkage long compat_sys_pselect6(int n, compat_ulong_t __user *inp,
compat_ulong_t __user *outp,
compat_ulong_t __user *exp,
