user/sven/linux.git/include/linux/compat.h, branch v3.10.44

fs/compat: fix lookup_dcookie() parameter handling

2014-02-13T21:48:00Z

commit d8d14bd09cddbaf0168d61af638455a26bd027ff upstream. Commit d5dc77bfeeab ("consolidate compat lookup_dcookie()") coverted all architectures to the new compat_sys_lookup_dcookie() syscall. The "len" paramater of the new compat syscall must have the type compat_size_t in order to enforce zero extension for architectures where the ABI requires that the caller of a function performed zero and/or sign extension to 64 bit of all parameters. Signed-off-by: Heiko Carstens Cc: Al Viro Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Hendrik Brueckner Cc: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

fs/compat: fix parameter handling for compat readv/writev syscalls

2014-02-13T21:48:00Z

commit dfd948e32af2e7b28bcd7a490c0a30d4b8df2a36 upstream. We got a report that the pwritev syscall does not work correctly in compat mode on s390. It turned out that with commit 72ec35163f9f ("switch compat readv/writev variants to COMPAT_SYSCALL_DEFINE") we lost the zero extension of a couple of syscall parameters because the some parameter types haven't been converted from unsigned long to compat_ulong_t. This is needed for architectures where the ABI requires that the caller of a function performed zero and/or sign extension to 64 bit of all parameters. Signed-off-by: Heiko Carstens Cc: Al Viro Cc: Ingo Molnar Cc: "H. Peter Anvin" Cc: Hendrik Brueckner Cc: Martin Schwidefsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

Introduce [compat_]save_altstack_ex() to unbreak x86 SMAP

2013-09-27T00:18:13Z

commit bd1c149aa9915b9abb6d83d0f01dfd2ace0680b5 upstream. For performance reasons, when SMAP is in use, SMAP is left open for an entire put_user_try { ... } put_user_catch(); block, however, calling __put_user() in the middle of that block will close SMAP as the STAC..CLAC constructs intentionally do not nest. Furthermore, using __put_user() rather than put_user_ex() here is bad for performance. Thus, introduce new [compat_]save_altstack_ex() helpers that replace __[compat_]save_altstack() for x86, being currently the only architecture which supports put_user_try { ... } put_user_catch(). Reported-by: H. Peter Anvin Signed-off-by: Al Viro Signed-off-by: H. Peter Anvin Link: http://lkml.kernel.org/n/tip-es5p6y64if71k8p5u08agv9n@git.kernel.org Signed-off-by: Greg Kroah-Hartman

unify compat fanotify_mark(2), switch to COMPAT_SYSCALL_DEFINE

2013-05-09T17:46:38Z

Signed-off-by: Al Viro

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

2013-05-01T14:21:43Z

Pull compat cleanup from Al Viro: "Mostly about syscall wrappers this time; there will be another pile with patches in the same general area from various people, but I'd rather push those after both that and vfs.git pile are in." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal: syscalls.h: slightly reduce the jungles of macros get rid of union semop in sys_semctl(2) arguments make do_mremap() static sparc: no need to sign-extend in sync_file_range() wrapper ppc compat wrappers for add_key(2) and request_key(2) are pointless x86: trim sys_ia32.h x86: sys32_kill and sys32_mprotect are pointless get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC merge compat sys_ipc instances consolidate compat lookup_dcookie() convert vmsplice to COMPAT_SYSCALL_DEFINE switch getrusage() to COMPAT_SYSCALL_DEFINE switch epoll_pwait to COMPAT_SYSCALL_DEFINE convert sendfile{,64} to COMPAT_SYSCALL_DEFINE switch signalfd{,4}() to COMPAT_SYSCALL_DEFINE make SYSCALL_DEFINE-generated wrappers do asmlinkage_protect make HAVE_SYSCALL_WRAPPERS unconditional consolidate cond_syscall and SYSCALL_ALIAS declarations teach SYSCALL_DEFINE how to deal with long long/unsigned long long get rid of duplicate logics in __SC_....[1-6] definitions

Fix breakage in MIPS siginfo handling

2013-03-19T18:15:52Z

MIPS's siginfo handling has been broken since this commit: commit 574c4866e33d648520a8bd5bf6f573ea6e554e88 Author: Al Viro Date: Sun Nov 25 22:24:19 2012 -0500 consolidate kernel-side struct sigaction declarations for 64-bit BE MIPS CPUs. The UAPI variant looks like this: struct sigaction { unsigned int sa_flags; __sighandler_t sa_handler; sigset_t sa_mask; }; but the core kernel's variant looks like this: struct sigaction { #ifndef __ARCH_HAS_ODD_SIGACTION __sighandler_t sa_handler; unsigned long sa_flags; #else unsigned long sa_flags; __sighandler_t sa_handler; #endif #ifdef __ARCH_HAS_SA_RESTORER __sigrestore_t sa_restorer; #endif sigset_t sa_mask; }; The problem is that sa_flags has been changed from an unsigned int to an unsigned long. Fix this by making sa_flags unsigned int if __ARCH_HAS_ODD_SIGACTION is defined. Whilst we're at it, rename __ARCH_HAS_ODD_SIGACTION to __ARCH_HAS_IRIX_SIGACTION. Signed-off-by: David Howells Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org Acked-by: Al Viro Signed-off-by: Ralf Baechle

get rid of compat_sys_semctl() and friends in case of ARCH_WANT_OLD_COMPAT_IPC

2013-03-04T04:00:27Z

Signed-off-by: Al Viro

merge compat sys_ipc instances

2013-03-04T04:00:27Z

Signed-off-by: Al Viro

consolidate compat lookup_dcookie()

2013-03-04T04:00:23Z

Signed-off-by: Al Viro

switch epoll_pwait to COMPAT_SYSCALL_DEFINE

2013-03-04T03:58:49Z

Signed-off-by: Al Viro