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set the close-on-exec flag on all file descriptors

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Added the "fd_util" library, which attempts to use the new thread-safe
Linux system calls pipe2(), accept4() and the options O_CLOEXEC,
SOCK_CLOEXEC.  Without these, it falls back to FD_CLOEXEC, which is
not thread safe.

This is particularly important for the "pipe" output plugin (and
others, such as JACK/PulseAudio), because we were heavily leaking file
descriptors to child processes.
This commit is contained in:
Max Kellermann
2009-11-07 18:55:16 +01:00
parent 9b21152600
commit e3af0032b2
17 changed files with 271 additions and 24 deletions
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@@ -62,6 +62,7 @@ ver 0.16 (20??/??/??)
* state_file: save only if something has changed
* database: eliminated maximum line length
* log: redirect stdout/stderr to /dev/null if syslog is used
* set the close-on-exec flag on all file descriptors
* obey $(sysconfdir) for default mpd.conf location
* build with large file support by default
* require GLib 2.16