* posix.sgml (std-notes): Change description of flock restrictions.
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2012-03-30 Corinna Vinschen <corinna@vinschen.de>
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* posix.sgml (std-notes): Change description of flock restrictions.
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2012-03-30 Corinna Vinschen <corinna@vinschen.de>
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2012-03-30 Corinna Vinschen <corinna@vinschen.de>
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* devices.h (DEV_TTY_MAJOR): Define, use throughout where appropriate.
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* devices.h (DEV_TTY_MAJOR): Define, use throughout where appropriate.
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@ -1457,10 +1457,11 @@ CLOCK_REALTIME and CLOCK_MONOTONIC. <function>clock_setres</function>,
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<function>clock_settime</function>, and <function>timer_create</function>
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<function>clock_settime</function>, and <function>timer_create</function>
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currently support only CLOCK_REALTIME.</para>
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currently support only CLOCK_REALTIME.</para>
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<para>BSD file locks created via <function>flock</function> are not
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<para>BSD file locks created via <function>flock</function> are only
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propagated to the parent process and sibling processes. The locks are
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propagated to the direct parent process, not to grand parents or sibling
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only valid in the creating process and subsequently started child processes
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processes. The locks are only valid in the creating process, its parent,
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sharing the same file descriptor.</para>
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and subsequently started child processes sharing the same file descriptor.
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</para>
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<para><function>fpclassify</function>, <function>isfinite</function>,
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<para><function>fpclassify</function>, <function>isfinite</function>,
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<function>isgreater</function>, <function>isgreaterequal</function>,
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<function>isgreater</function>, <function>isgreaterequal</function>,
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@ -5,3 +5,17 @@ What's new:
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existing POSIX devices.
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existing POSIX devices.
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- Add virtual /proc/PID/mountinfo file.
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- Add virtual /proc/PID/mountinfo file.
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- flock now additionaly supports the following scenario, which requires
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to propagate locks to the parent process:
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(
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flock -n 9 || exit 1
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# ... commands executed under lock ...
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} 9>/var/lock/mylockfile
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Only propagation to the direct parent process is supported so far,
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not to grand parents or sibling processes.
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- Add a "detect_bloda" setting for the CYGWIN environment variable to help
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finding potential BLODAs.
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