[asterisk-bugs] [JIRA] (ASTERISK-24014) No core dumps because of res_musiconhold chdir.

[Rusty Newton (JIRA)]

Rusty Newton created ASTERISK-24014:
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             Summary: No core dumps because of res_musiconhold chdir.
                 Key: ASTERISK-24014
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24014
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: Resources/res_musiconhold
    Affects Versions: SVN, 1.8.28.2
            Reporter: Walter Doekes


Jeez. Finally found out why I didn't get core dumps most of the time.

res_musiconhold does a chdir to a non-writable directory (since r4552). That chdir is completely avoidable, as far as I can tell.

If run quickly enough, that chdir is undone at the end of the function, but because of the race, a second run of the function will take the temporary cwd as old cwd and return to that when finished:
*from now on, you're in a non-writable musiconhold dir, and you get no core dumps (unless you run as root or your moh dirs are writable or your core_pattern is absolutely pathed).*



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