diff options
| author |   Al Viro <viro@ZenIV.linux.org.uk> | 2012-12-02 17:55:07 +0000 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-02 10:46:38 -0800 |
| commit | 9d73fc2d641f8831c9dc803177fe47c02120cc36 (patch) | |
| tree | 266020ef9f36f1a9e09cb7c84d5058ff735575c1 /arch/s390 | |
| parent | Merge branch 'for-3.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq (diff) | |
| download | linux-dev-9d73fc2d641f8831c9dc803177fe47c02120cc36.tar.xz linux-dev-9d73fc2d641f8831c9dc803177fe47c02120cc36.zip | |
open*(2) compat fixes (s390, arm64)
The usual rules for open()/openat()/open_by_handle_at() are
1) native 32bit - don't force O_LARGEFILE in flags
2) native 64bit - force O_LARGEFILE in flags
3) compat on 64bit host - as for native 32bit
4) native 32bit ABI for 64bit system (mips/n32, x86/x32) - as for
native 64bit
There are only two exceptions - s390 compat has open() forcing
O_LARGEFILE and arm64 compat has open_by_handle_at() doing the same
thing. The same binaries on native host (s390/31 and arm resp.) will
*not* force O_LARGEFILE, so IMO both are emulation bugs.
Objections? The fix is obvious...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/compat_wrapper.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index ad79b846535c..827e094a2f49 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -28,7 +28,7 @@ ENTRY(sys32_open_wrapper) llgtr %r2,%r2 # const char * lgfr %r3,%r3 # int lgfr %r4,%r4 # int - jg sys_open # branch to system call + jg compat_sys_open # branch to system call ENTRY(sys32_close_wrapper) llgfr %r2,%r2 # unsigned int |