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author | Rich Felker <dalias@aerifal.cx> | 2020-10-01 14:53:12 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2020-10-14 20:27:12 -0400 |
commit | b7bc966522d73e1dc420b5ee6fc7a2e78099a08c (patch) | |
tree | 56b9e575aba31d4d44f626c942641badb2dccefe /src/unistd | |
parent | 25ea9f712c30c32957de493d4711ee39d0bbb024 (diff) | |
download | musl-b7bc966522d73e1dc420b5ee6fc7a2e78099a08c.tar.gz musl-b7bc966522d73e1dc420b5ee6fc7a2e78099a08c.tar.xz musl-b7bc966522d73e1dc420b5ee6fc7a2e78099a08c.zip |
fix posix_spawn interaction with fork and abort by taking lock
this change prevents the child created concurrently with abort from seeing the SIGABRT disposition change from SIG_IGN to SIG_DFL (other changes are not visible anyway) and prevents leaking the write end of the child pipe to children created by fork in another thread, which may block return of posix_spawn indefinitely if the forked child does not exit or exec. along with other changes, this suggests that __abort_lock should perhaps eventually be renamed to reflect that it's becoming a broader lock on related "process lifetime" state.
Diffstat (limited to 'src/unistd')
0 files changed, 0 insertions, 0 deletions