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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-16 12:25:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-16 12:25:25 -0700 |
| commit | 230e51f21101e49c8d73018d414adbd0d57459a1 (patch) | |
| tree | 95dbb338a2ae90c0f8a060836bf93d858425e00a /include/uapi | |
| parent | a3871bd434cfc313cdcd1edc433507298f4aa928 (diff) | |
| parent | 91c6180572e2fec71701d646ffc40ad30986275c (diff) | |
Merge branch 'core-signals-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull core signal updates from Ingo Molnar:
"These updates from Stas Sergeev and Andy Lutomirski, improve the
sigaltstack interface by extending its ABI with the SS_AUTODISARM
feature, which makes it possible to use swapcontext() in a sighandler
that works on sigaltstack. Without this flag, the subsequent signal
will corrupt the state of the switched-away sighandler.
The inspiration is more robust dosemu signal handling"
* 'core-signals-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
signals/sigaltstack: Change SS_AUTODISARM to (1U << 31)
signals/sigaltstack: Report current flag bits in sigaltstack()
selftests/sigaltstack: Fix the sigaltstack test on old kernels
signals/sigaltstack: If SS_AUTODISARM, bypass on_sig_stack()
selftests/sigaltstack: Add new testcase for sigaltstack(SS_ONSTACK|SS_AUTODISARM)
signals/sigaltstack: Implement SS_AUTODISARM flag
signals/sigaltstack: Prepare to add new SS_xxx flags
signals/sigaltstack, x86/signals: Unify the x86 sigaltstack check with other architectures
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/signal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/linux/signal.h b/include/uapi/linux/signal.h index e1bd50c29ded..cd0804b6bfa2 100644 --- a/include/uapi/linux/signal.h +++ b/include/uapi/linux/signal.h @@ -7,4 +7,9 @@ #define SS_ONSTACK 1 #define SS_DISABLE 2 +/* bit-flags */ +#define SS_AUTODISARM (1U << 31) /* disable sas during sighandling */ +/* mask for all SS_xxx flags */ +#define SS_FLAG_BITS SS_AUTODISARM + #endif /* _UAPI_LINUX_SIGNAL_H */ |