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New option -signal_handling

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This commit is contained in:
Thomas Schmitt
2011-04-23 15:23:35 +00:00
parent 936ba3bf72
commit de8a416827
15 changed files with 260 additions and 56 deletions
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32
libisoburn/trunk/xorriso/xorriso.1
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@ -9,7 +9,7 @@
.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.TH XORRISO 1 "Apr 03, 2011"
.TH XORRISO 1 "Apr 22, 2011"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
@ -2870,6 +2870,36 @@ A special property of this option is that the first -report_about setting
among the start arguments is in effect already when the first operations
of xorriso begin. Only "-report_about" with dash "-" is recognized that way.
.TP
\fB\-signal_handling\fR mode
Control the installation of a signal handler which shall react on external
signals (e.g. from program "kill" or from keys Ctrl+C) or on signals
caused by severe program errors.
.br
Mode "on" is the default. It uses the signal handler of libburn which produces
ugly messages but puts much effort in releasing eventually used optical drives
before xorriso ends.
.br
Mode "off" as first -signal_handling among the start arguments prevents all
own signal precautions of xorriso. Eventually inherited signal handler settings
stay as they are.
.br
It works like "sig_dfl" if given after other signal handling was already
established at program start.
.br
Mode "sig_dfl" uses the system provided default handling of signals, which is
normally a sudden abort of the program. To prevent stuck drives, the
libburn handler is used during burning, blanking, and formatting on MMC drives.
.br
Mode "sig_ign" tries to ignore as many signal types as possible. This imposes
the risk that xorriso refuses to end until externally kill -9 if performed.
kill -9 then imposes the risk that the drive is left in unusable state and
needs poweroff to be reset. So during burning, blanking, and formatting
wait for at least their normal run time before killing externally.
.br
A special property of this option is that the first -signal_handling setting
among the start arguments is in effect already when the first operations
of xorriso begin. Only "-signal_handling" with dash "-" is recognized that way.
.TP
\fB\-error_behavior\fR occasion behavior
Control the program behavior at problem event occasions.
For now this applies to occasions "image_loading" which is given while