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author | David Howells <dhowells@redhat.com> | 2012-05-11 11:56:56 +0200 |
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committer | David Howells <dhowells@redhat.com> | 2012-05-11 11:56:56 +0200 |
commit | 45de6767dc51358a188f75dc4ad9dfddb7fb9480 (patch) | |
tree | fd73c68347190acb0b14ef51095d9e7d713af2d7 /security/Kconfig | |
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 'security/Kconfig')
0 files changed, 0 insertions, 0 deletions