Your message dated Wed, 15 Apr 2015 10:00:09 +0000
with message-id <[email protected]>
and subject line Bug#596232: fixed in sane-frontends 1.0.14-10
has caused the Debian Bug report #596232,
regarding scanadf sets SIGCHLD to SIG_IGN
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
596232: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=596232
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Source: sane
Version: 1.0.14-9
Severity: normal
Tags: patch
According to POSIX, “If the SIGCHLD signal is set to be ignored by the
calling process image, it is unspecified whether [after an exec*() call]
the SIGCHLD signal is set to be ignored or to the default action in the
new process image.”[0]
scanadf sets SIGCHLD to SIG_IGN just before calling fork() and execle().
This action will be inherited by child processes on Linux and Hurd
systems (though, apparently, not on kFreeBSD). This is certainly
undesired behaviour, and breaks every program that expect this signal
action to be set reasonably at startup (e.g. Python programs using the
subprocess module).
The attached (untested) patch should fix this bug.
[0] http://www.opengroup.org/onlinepubs/009695399/functions/exec.html
--
Jakub Wilk
diff --git a/src/scanadf.c b/src/scanadf.c
--- a/src/scanadf.c
+++ b/src/scanadf.c
@@ -1195,6 +1195,7 @@
case 0:
/* in child process */
+ signal(SIGCHLD, SIG_DFL);
sprintf(cmd, "%s '%s'", script, fname);
/* system(cmd); */
execle(script, script, fname, NULL, environ);
signature.asc
Description: Digital signature
--- End Message ---
--- Begin Message ---
Source: sane-frontends
Source-Version: 1.0.14-10
We believe that the bug you reported is fixed in the latest version of
sane-frontends, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Jörg Frings-Fürst <[email protected]> (supplier of updated
sane-frontends package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Wed, 11 Feb 2015 08:00:08 +0100
Source: sane-frontends
Binary: sane sane-dbg
Architecture: source amd64
Version: 1.0.14-10
Distribution: unstable
Urgency: medium
Maintainer: Jörg Frings-Fürst <[email protected]>
Changed-By: Jörg Frings-Fürst <[email protected]>
Description:
sane - scanner graphical frontends
sane-dbg - scanner graphical frontends (debug symbols)
Closes: 596232 612686 670380
Changes:
sane-frontends (1.0.14-10) unstable; urgency=medium
.
* New maintainer (Close: #688556).
* debian/control:
- Add myself as maintainer.
- Bump Standards-Version to 3.9.6.
- Package sane:
- Add ${misc:Depends} to Depends.
- Remove useless "Section: graphics".
- Add homepage.
- Add Vcs-* to new git repository.
* debian/compat:
- Change from 5 to 9.
* New debian/source/format
- Set to "3.0 (quilt)".
* Convert patches from dpatch to quilt.
* Rewrite debian/copyright.
* Rewrite builtsystem to dh and DebSrc3.0 (Closes: #670380):
- Rewrite debian/rules.
- New sane.links
- New sane.install
* Add debian/watch.
* debian/patches:
- New 20_scanadf-SIGCHLD.patch (Closes: #596232):
- Sets SIGCHLD to SIG_DFL before execle().
- New 25_manpages-typo.patch (Closes: #612686):
- Correct some typos.
* New package sane-dbg.
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