signals/sigaltstack: Change SS_AUTODISARM to (1U << 31)

Using bit 4 divides the space of available bits strangely. Use bit 31 instead so that we have a better chance of keeping flag and mode bits separate in the long run.

Andy Lutomirski committed 10 years ago

Commit 91c61801 parent 0318bc82 files · +2 −2Browse files

Showing the changes to include/uapi (1 of 2 files). Show all

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include/uapi/linux/signal.h+1−1

@@ -8,7 +8,7 @@ · 7 unmodified lines
8	8	#define SS_DISABLE 2
9	9
10	10	/* bit-flags */
11		−#define SS_AUTODISARM (1 << 4) /* disable sas during sighandling */
	11	+#define SS_AUTODISARM (1U << 31) /* disable sas during sighandling */
12	12	/* mask for all SS_xxx flags */
13	13	#define SS_FLAG_BITS SS_AUTODISARM
14	14

signals/sigaltstack: Change SS_AUTODISARM to (1U << 31)

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