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| author | Eric W. Biederman <ebiederm@xmission.com> | 2021-05-01 01:29:36 +0300 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2021-05-19 00:20:34 +0300 |
| commit | 9abcabe3111811aeae0f3a14e159b14248631875 (patch) | |
| tree | cc6f95ed83d9b4e161b29851b20eb6784bd34ce8 /fs/signalfd.c | |
| parent | add0b32ef9146a8559a60aed54c37692a5f9d34f (diff) | |
| download | linux-9abcabe3111811aeae0f3a14e159b14248631875.tar.xz | |
signal: Implement SIL_FAULT_TRAPNO
Now that si_trapno is part of the union in _si_fault and available on
all architectures, add SIL_FAULT_TRAPNO and update siginfo_layout to
return SIL_FAULT_TRAPNO when the code assumes si_trapno is valid.
There is room for future changes to reduce when si_trapno is valid but
this is all that is needed to make si_trapno and the other members of
the the union in _sigfault mutually exclusive.
Update the code that uses siginfo_layout to deal with SIL_FAULT_TRAPNO
and have the same code ignore si_trapno in in all other cases.
v1: https://lkml.kernel.org/r/m1o8dvs7s7.fsf_-_@fess.ebiederm.org
v2: https://lkml.kernel.org/r/20210505141101.11519-6-ebiederm@xmission.com
Link: https://lkml.kernel.org/r/20210517195748.8880-2-ebiederm@xmission.com
Reviewed-by: Marco Elver <elver@google.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'fs/signalfd.c')
| -rw-r--r-- | fs/signalfd.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/signalfd.c b/fs/signalfd.c index 040a1142915f..e87e59581653 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -123,15 +123,13 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, */ case SIL_FAULT: new.ssi_addr = (long) kinfo->si_addr; -#ifdef __ARCH_SI_TRAPNO + break; + case SIL_FAULT_TRAPNO: + new.ssi_addr = (long) kinfo->si_addr; new.ssi_trapno = kinfo->si_trapno; -#endif break; case SIL_FAULT_MCEERR: new.ssi_addr = (long) kinfo->si_addr; -#ifdef __ARCH_SI_TRAPNO - new.ssi_trapno = kinfo->si_trapno; -#endif new.ssi_addr_lsb = (short) kinfo->si_addr_lsb; break; case SIL_PERF_EVENT: |