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authorRich Felker <dalias@aerifal.cx>2019-03-05 11:02:15 -0500
committerRich Felker <dalias@aerifal.cx>2019-03-05 11:08:46 -0500
commit4918b7fb0d9f3d3fd4b46be3313901fbd772064b (patch)
tree9559680400635982c454e54a648d2627758dae04 /ldso/dynlink.c
parent43e7efb46555f13a556d92944ac05c19b8929b60 (diff)
downloadmusl-4918b7fb0d9f3d3fd4b46be3313901fbd772064b.tar.gz
don't reject unknown/future flags in sigaltstack, allow SS_AUTODISARM
historically, and likely accidentally, sigaltstack was specified to fail with EINVAL if any flag bit other than SS_DISABLE was set. the resolution of Austin Group issue 1187 fixes this so that the requirement is only to fail for SS_ONSTACK (which cannot be set) or "invalid" flags. Linux fails on the kernel side for invalid flags, but historically accepts SS_ONSTACK as a no-op, so it needs to be rejected in userspace still. with this change, the Linux-specific SS_AUTODISARM, provided since commit 9680e1d03a794b0e0d5815c749478228ed40a36d but unusable due to rejection at runtime, is now usable.
Diffstat (limited to 'ldso/dynlink.c')
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