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| author | David Howells <dhowells@redhat.com> | 2012-05-11 11:56:56 +0200 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2012-05-11 11:56:56 +0200 |
| commit | 45de6767dc51358a188f75dc4ad9dfddb7fb9480 (patch) | |
| tree | fd73c68347190acb0b14ef51095d9e7d713af2d7 /arch/sparc/kernel/systbls_64.S | |
| parent | Merge tag 'v3.4-rc5' into next (diff) | |
| download | linux-45de6767dc51358a188f75dc4ad9dfddb7fb9480.tar.xz linux-45de6767dc51358a188f75dc4ad9dfddb7fb9480.zip | |
KEYS: Use the compat keyctl() syscall wrapper on Sparc64 for Sparc32 compat
Use the 32-bit compat keyctl() syscall wrapper on Sparc64 for Sparc32 binary
compatibility.
Without this, keyctl(KEYCTL_INSTANTIATE_IOV) is liable to malfunction as it
uses an iovec array read from userspace - though the kernel should survive this
as it checks pointers and sizes anyway.
I think all the other keyctl() function should just work, provided (a) the top
32-bits of each 64-bit argument register are cleared prior to invoking the
syscall routine, and the 32-bit address space is right at the 0-end of the
64-bit address space. Most of the arguments are 32-bit anyway, and so for
those clearing is not required.
Signed-off-by: David Howells <dhowells@redhat.com
cc: "David S. Miller" <davem@davemloft.net>
cc: sparclinux@vger.kernel.org
cc: stable@vger.kernel.org
Diffstat (limited to 'arch/sparc/kernel/systbls_64.S')
| -rw-r--r-- | arch/sparc/kernel/systbls_64.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S index db86b1a0e9a9..3a58e0d66f51 100644 --- a/arch/sparc/kernel/systbls_64.S +++ b/arch/sparc/kernel/systbls_64.S @@ -74,7 +74,7 @@ sys_call_table32: .word sys_timer_delete, compat_sys_timer_create, sys_ni_syscall, compat_sys_io_setup, sys_io_destroy /*270*/ .word sys32_io_submit, sys_io_cancel, compat_sys_io_getevents, sys32_mq_open, sys_mq_unlink .word compat_sys_mq_timedsend, compat_sys_mq_timedreceive, compat_sys_mq_notify, compat_sys_mq_getsetattr, compat_sys_waitid -/*280*/ .word sys32_tee, sys_add_key, sys_request_key, sys_keyctl, compat_sys_openat +/*280*/ .word sys32_tee, sys_add_key, sys_request_key, compat_sys_keyctl, compat_sys_openat .word sys_mkdirat, sys_mknodat, sys_fchownat, compat_sys_futimesat, compat_sys_fstatat64 /*290*/ .word sys_unlinkat, sys_renameat, sys_linkat, sys_symlinkat, sys_readlinkat .word sys_fchmodat, sys_faccessat, compat_sys_pselect6, compat_sys_ppoll, sys_unshare |