| commit | f71dd7dc2dc989dc712b246a74d243e4b2c5f8a7 | |
| author | Eric W. Biederman <ebiederm@xmission.com> | |
| Mon, 22 Jan 2018 20:37:25 +0000 (22 14:37 -0600) | ||
| committer | Eric W. Biederman <ebiederm@xmission.com> | |
| Tue, 23 Jan 2018 01:07:11 +0000 (22 19:07 -0600) | ||
| tree | c126cf571c0a25c540210fa7bfe8f03b19d0c2a4 | treesnapshot (tar.gz zip) |
| parent | 47355040d2760566901057287b35d5f10e217e12 | commitdiff |
signal/ptrace: Add force_sig_ptrace_errno_trap and use it where needed
There are so many places that build struct siginfo by hand that at
least one of them is bound to get it wrong. A handful of cases in the
kernel arguably did just that when using the errno field of siginfo to
pass no errno values to userspace. The usage is limited to a single
si_code so at least does not mess up anything else.
Encapsulate this questionable pattern in a helper function so
that the userspace ABI is preserved.
Update all of the places that use this pattern to use the new helper
function.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
There are so many places that build struct siginfo by hand that at
least one of them is bound to get it wrong. A handful of cases in the
kernel arguably did just that when using the errno field of siginfo to
pass no errno values to userspace. The usage is limited to a single
si_code so at least does not mess up anything else.
Encapsulate this questionable pattern in a helper function so
that the userspace ABI is preserved.
Update all of the places that use this pattern to use the new helper
function.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>