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authorPádraig Brady <P@draigBrady.com>2014-09-26 15:46:28 +0100
committerPádraig Brady <P@draigBrady.com>2014-09-30 16:08:43 +0100
commit27d2c7383f18d0f59b0d096f156ed6cb1677642b (patch)
tree4751ae63c97f082140065ba434b07afe3807512f /NEWS
parent4d8c4dfc2170bde7a25bbf5db6dd2d6e54b43fac (diff)
downloadcoreutils-27d2c7383f18d0f59b0d096f156ed6cb1677642b.tar.xz
dd: use more robust SIGUSR1 handling
* src/dd.c (ifd_reopen): A new wrapper to ensure we don't exit upon receiving a SIGUSR1 in a blocking open() on a fifo for example. (iftruncate): Likewise for ftruncate(). (iread): Process signals also after a short read. (install_signal_handlers): Install SIGINFO/SIGUSR1 handler even if set to SIG_IGN, as this is what the parent can easily set from a shell script that can send SIGUSR1 without the possiblity of inadvertently killing the dd process. * doc/coreutils.texi (dd invocation): Improve the example to show robust usage wrt signal races and short reads. * tests/dd/stats.sh: A new test for various signal races. * tests/local.mk: Reference the new test. * NEWS: Mention the fix.
Diffstat (limited to 'NEWS')
-rw-r--r--NEWS3
1 files changed, 3 insertions, 0 deletions
diff --git a/NEWS b/NEWS
index 077c5fcb9..3e10ac4e5 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,9 @@ GNU coreutils NEWS -*- outline -*-
** Bug fixes
+ dd supports more robust SIGINFO/SIGUSR1 handling for outputting statistics.
+ Previously those signals may have inadvertently terminated the process.
+
cp no longer issues an incorrect warning about directory hardlinks when a
source directory is specified multiple times. Now, consistent with other
file types, a warning is issued for source directories with duplicate names,