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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal 

Pull signal/compat fixes from Al Viro:
 "Fixes for several regressions introduced in the last signal.git pile,
  along with fixing bugs in truncate and ftruncate compat (on just about
  anything biarch at least one of those two had been done wrong)."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal:
  compat: restore timerfd settime and gettime compat syscalls
  [regression] braino in "sparc: convert to ksignal"
  fix compat truncate/ftruncate
  switch lseek to COMPAT_SYSCALL_DEFINE
  lseek() and truncate() on sparc really need sign extension
This commit is contained in:
Linus Torvalds 2013-03-02 08:34:06 -08:00
parent 3cfb07743a 0e803bafbb
commit 14cc0b55b7
18 changed files with 50 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
arch/arm64/include/asm/unistd32.h
View File

@ -40,7 +40,7 @@ __SYSCALL(15, sys_chmod)
__SYSCALL(16, sys_lchown16)
__SYSCALL(17, sys_ni_syscall) /* 17 was sys_break */
__SYSCALL(18, sys_ni_syscall) /* 18 was sys_stat */
__SYSCALL(19, compat_sys_lseek_wrapper)
__SYSCALL(19, compat_sys_lseek)
__SYSCALL(20, sys_getpid)
__SYSCALL(21, compat_sys_mount)
__SYSCALL(22, sys_ni_syscall) /* 22 was sys_umount */
@ -113,8 +113,8 @@ __SYSCALL(88, sys_reboot)
__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)

5
arch/arm64/kernel/sys32.S
View File

@ -58,11 +58,6 @@ ENDPROC(compat_sys_fstatfs64_wrapper)
* in registers or that take 32-bit parameters which require sign
* extension.
*/
compat_sys_lseek_wrapper:
sxtw x1, w1
b sys_lseek
ENDPROC(compat_sys_lseek_wrapper)
compat_sys_pread64_wrapper:
orr x3, x4, x5, lsl #32
b sys_pread64

4
arch/mips/kernel/scall64-o32.S
View File

@ -284,8 +284,8 @@ sys_call_table:
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

10
arch/parisc/kernel/sys_parisc32.c
View File

@ -79,16 +79,6 @@ asmlinkage long sys32_sendfile64(u32 out_fd, u32 in_fd,
(loff_t __user *)offset, count);
}
/* lseek() needs a wrapper because 'offset' can be negative, but the top
* half of the argument has been zeroed by syscall.S.
*/
asmlinkage int sys32_lseek(unsigned int fd, int offset, unsigned int origin)
{
return sys_lseek(fd, offset, origin);
}
asmlinkage long sys32_semctl(int semid, int semnum, int cmd, union semun arg)
{
union semun u;

6
arch/parisc/kernel/syscall_table.S
View File

@ -76,7 +76,7 @@
ENTRY_SAME(socket)
/* struct stat is MAYBE identical wide and narrow ?? */
ENTRY_COMP(newstat)
ENTRY_DIFF(lseek)
ENTRY_COMP(lseek)
ENTRY_SAME(getpid) /* 20 */
/* the 'void * data' parameter may need re-packing in wide */
ENTRY_COMP(mount)
@ -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)

2
arch/powerpc/include/asm/systbl.h
View File

@ -22,7 +22,7 @@ SYSCALL_SPU(chmod)
SYSCALL_SPU(lchown)
SYSCALL(ni_syscall)
OLDSYS(stat)
SYSX_SPU(sys_lseek,ppc32_lseek,sys_lseek)
COMPAT_SYS_SPU(lseek)
SYSCALL_SPU(getpid)
COMPAT_SYS(mount)
SYSX(sys_ni_syscall,sys_oldumount,sys_oldumount)

18
arch/powerpc/kernel/sys_ppc32.c
View File

@ -146,24 +146,6 @@ asmlinkage long compat_sys_sendfile64_wrapper(u32 out_fd, u32 in_fd,
(off_t __user *)offset, count);
}
off_t ppc32_lseek(unsigned int fd, u32 offset, unsigned int origin)
{
/* sign extend n */
return sys_lseek(fd, (int)offset, origin);
}
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)

16
arch/s390/kernel/compat_wrapper.S
View File

@ -67,12 +67,6 @@ ENTRY(sys32_lchown16_wrapper)
llgfr %r4,%r4 # __kernel_old_uid_emu31_t
jg sys32_lchown16 # branch to system call
ENTRY(sys32_lseek_wrapper)
llgfr %r2,%r2 # unsigned int
lgfr %r3,%r3 # off_t
llgfr %r4,%r4 # unsigned int
jg sys_lseek # branch to system call
#sys32_getpid_wrapper # void
ENTRY(sys32_mount_wrapper)
@ -331,16 +325,6 @@ ENTRY(sys32_munmap_wrapper)
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

6
arch/s390/kernel/syscalls.S
View File

@ -27,7 +27,7 @@ SYSCALL(sys_chmod,sys_chmod,sys32_chmod_wrapper) /* 15 */
SYSCALL(sys_lchown16,sys_ni_syscall,sys32_lchown16_wrapper) /* old lchown16 syscall*/
NI_SYSCALL /* old break syscall holder */
NI_SYSCALL /* old stat syscall holder */
SYSCALL(sys_lseek,sys_lseek,sys32_lseek_wrapper)
SYSCALL(sys_lseek,sys_lseek,compat_sys_lseek)
SYSCALL(sys_getpid,sys_getpid,sys_getpid) /* 20 */
SYSCALL(sys_mount,sys_mount,sys32_mount_wrapper)
SYSCALL(sys_oldumount,sys_oldumount,sys32_oldumount_wrapper)
@ -100,8 +100,8 @@ SYSCALL(sys_reboot,sys_reboot,sys32_reboot_wrapper)
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)

2
arch/sparc/kernel/signal32.c
View File

@ -726,7 +726,7 @@ static inline void syscall_restart32(unsigned long orig_i0, struct pt_regs *regs
* want to handle. Thus you cannot kill init even with a SIGKILL even by
* mistake.
*/
void do_signal32(sigset_t *oldset, struct pt_regs * regs)
void do_signal32(struct pt_regs * regs)
{
struct ksignal ksig;
unsigned long orig_i0 = 0;

6
arch/sparc/kernel/systbls_64.S
View File

@ -21,7 +21,7 @@ sys_call_table32:
/*0*/ .word sys_restart_syscall, sparc_exit, sys_fork, sys_read, sys_write
/*5*/ .word compat_sys_open, sys_close, compat_sys_wait4, sys_creat, sys_link
/*10*/ .word sys_unlink, sunos_execv, sys_chdir, sys_chown16, sys_mknod
/*15*/ .word sys_chmod, sys_lchown16, sys_brk, sys_nis_syscall, sys_lseek
/*15*/ .word sys_chmod, sys_lchown16, sys_brk, sys_nis_syscall, compat_sys_lseek
/*20*/ .word sys_getpid, sys_capget, sys_capset, sys_setuid16, sys_getuid16
/*25*/ .word sys32_vmsplice, compat_sys_ptrace, sys_alarm, compat_sys_sigaltstack, sys_pause
/*30*/ .word compat_sys_utime, sys_lchown, sys_fchown, sys_access, sys_nice
@ -43,8 +43,8 @@ sys_call_table32:
/*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, sys_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

5
arch/x86/ia32/sys_ia32.c
View File

@ -218,11 +218,6 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd,
* Some system calls that need sign extended arguments. This could be
* done by a generic wrapper.
*/
long sys32_lseek(unsigned int fd, int offset, unsigned int whence)
{
return sys_lseek(fd, offset, whence);
}
long sys32_kill(int pid, int sig)
{
return sys_kill(pid, sig);

1
arch/x86/include/asm/sys_ia32.h
View File

@ -43,7 +43,6 @@ asmlinkage long sys32_pwrite(unsigned int, const char __user *, u32, u32, u32);
asmlinkage long sys32_personality(unsigned long);
asmlinkage long sys32_sendfile(int, int, compat_off_t __user *, s32);
long sys32_lseek(unsigned int, int, unsigned int);
long sys32_kill(int, int);
long sys32_fadvise64_64(int, __u32, __u32, __u32, __u32, int);
long sys32_vm86_warning(void);

6
arch/x86/syscalls/syscall_32.tbl
View File

@ -25,7 +25,7 @@
16 i386 lchown sys_lchown16
17 i386 break
18 i386 oldstat sys_stat
19 i386 lseek sys_lseek sys32_lseek
19 i386 lseek sys_lseek compat_sys_lseek
20 i386 getpid sys_getpid
21 i386 mount sys_mount compat_sys_mount
22 i386 umount sys_oldumount
@ -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

15
fs/open.c
View File

@ -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 @@ SYSCALL_DEFINE2(truncate, const char __user *, path, long, length)
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 @@ SYSCALL_DEFINE2(ftruncate, unsigned int, fd, unsigned long, length)
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)

9
fs/read_write.c
View File

@ -15,6 +15,7 @@
#include <linux/syscalls.h>
#include <linux/pagemap.h>
#include <linux/splice.h>
#include <linux/compat.h>
#include "read_write.h"
#include <asm/uaccess.h>
@ -247,6 +248,13 @@ SYSCALL_DEFINE3(lseek, unsigned int, fd, off_t, offset, unsigned int, whence)
return retval;
}
#ifdef CONFIG_COMPAT
COMPAT_SYSCALL_DEFINE3(lseek, unsigned int, fd, compat_off_t, offset, unsigned int, whence)
{
return sys_lseek(fd, offset, whence);
}
#endif
#ifdef __ARCH_WANT_SYS_LLSEEK
SYSCALL_DEFINE5(llseek, unsigned int, fd, unsigned long, offset_high,
unsigned long, offset_low, loff_t __user *, result,
@ -278,7 +286,6 @@ out_putf:
}
#endif
/*
* rw_verify_area doesn't like huge counts. We limit
* them to something that fits in "int" so that others

10
fs/timerfd.c
View File

@ -383,10 +383,10 @@ SYSCALL_DEFINE2(timerfd_gettime, int, ufd, struct itimerspec __user *, otmr)
return copy_to_user(otmr, &kotmr, sizeof(kotmr)) ? -EFAULT: 0;
}
#ifdef COMPAT
#ifdef CONFIG_COMPAT
COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
const struct itimerspec __user *, utmr,
struct itimerspec __user *, otmr)
const struct compat_itimerspec __user *, utmr,
struct compat_itimerspec __user *, otmr)
{
struct itimerspec new, old;
int ret;
@ -402,12 +402,12 @@ COMPAT_SYSCALL_DEFINE4(timerfd_settime, int, ufd, int, flags,
}
COMPAT_SYSCALL_DEFINE2(timerfd_gettime, int, ufd,
struct itimerspec __user *, otmr)
struct compat_itimerspec __user *, otmr)
{
struct itimerspec kotmr;
int ret = do_timerfd_gettime(ufd, &kotmr);
if (ret)
return ret;
return put_compat_itimerspec(otmr, &t) ? -EFAULT: 0;
return put_compat_itimerspec(otmr, &kotmr) ? -EFAULT: 0;
}
#endif

3
include/linux/compat.h
View File

@ -359,6 +359,7 @@ asmlinkage ssize_t compat_sys_preadv(unsigned long fd,
asmlinkage ssize_t compat_sys_pwritev(unsigned long fd,
const struct compat_iovec __user *vec,
unsigned long vlen, u32 pos_low, u32 pos_high);
asmlinkage long comat_sys_lseek(unsigned int, compat_off_t, unsigned int);
asmlinkage long compat_sys_execve(const char __user *filename, const compat_uptr_t __user *argv,
const compat_uptr_t __user *envp);
@ -535,6 +536,8 @@ asmlinkage long compat_sys_openat(int dfd, const char __user *filename,
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,