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| author | Paul Eggert <eggert@cs.ucla.edu> | 2018-08-06 14:44:41 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2018-08-06 14:45:34 -0700 |
| commit | 30ba4a2b69e5ee34c3fcde12f275f80d1fbe8a59 (patch) | |
| tree | 43fdc9cde594e56edf8f29787d1d9e6d9e6cd629 /m4 | |
| parent | 1252d056feaf71e7488cbaa5a78b3d45cd77f877 (diff) | |
| download | gzip-30ba4a2b69e5ee34c3fcde12f275f80d1fbe8a59.tar.gz | |
Fix some theoretical races in signal handling
Problem reported by Johannes Przybilla (Bug#32375).
* NEWS: Mention this.
* bootstrap.conf (gnulib_modules): Add sigaction.
* gzip.c (SA_NOCLDSTOP, sigprocmask, sigset_t)
(siginterrupt) [!SA_NOCLDSTOP]: Remove; Gnulib not supplies these.
(remove_ofname): New var.
(volatile_strcpy): New function.
(create_outfile): Use it.
(install_signal_handlers, abort_gzip_signal): Assume sigaction.
(remove_output_file): New arg SIGNALS_ALREADY_BLOCKED.
All uses changed. Avoid unnecessary (and racy) call
to sigprocmask if this new arg is set.
(abort_gzip_signal): Assume C89 or better for signal handler type.
* gzip.h (RETSIGTYPE): Remove.
* lib/.gitignore, m4/.gitignore:
Add files brought in by Gnulib sigaction module. Sort.
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/.gitignore | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/m4/.gitignore b/m4/.gitignore index 5ce3776..7f5c059 100644 --- a/m4/.gitignore +++ b/m4/.gitignore @@ -58,6 +58,7 @@ /gnulib-common.m4 /gnulib-comp.m4 /gnulib-tool.m4 +/host-cpu-c-abi.m4 /include_next.m4 /intmax_t.m4 /inttypes_h.m4 @@ -102,11 +103,15 @@ /printf-posix-rpl.m4 /printf.m4 /pthread_rwlock_rdlock.m4 +/raise.m4 /readdir.m4 /realloc.m4 /rmdir.m4 /save-cwd.m4 /savedir.m4 +/sigaction.m4 +/signal_h.m4 +/signalblocking.m4 /signbit.m4 /size_max.m4 /ssize_t.m4 @@ -118,6 +123,7 @@ /stdint_h.m4 /stdio_h.m4 /stdlib_h.m4 +/stdnoreturn.m4 /stpcpy.m4 /strdup.m4 /strerror.m4 @@ -147,7 +153,5 @@ /wint_t.m4 /xalloc.m4 /xsize.m4 -/yesno.m4 -/host-cpu-c-abi.m4 /year2038.m4 -/stdnoreturn.m4 +/yesno.m4 |