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authorDavid Howells <dhowells@redhat.com>2012-05-11 10:56:56 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-01 15:12:54 +0800
commit5032d5a70bf303543fef56d014a2b69f70d5714c (patch)
tree11a7b4116520f84ea1b3db9b749c3f15f67ce577 /security
parent77f38874d05fef08ca1182155bd823f06343a3ad (diff)
KEYS: Use the compat keyctl() syscall wrapper on Sparc64 for Sparc32 compat
commit 45de6767dc51358a188f75dc4ad9dfddb7fb9480 upstream. 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 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions