Section: User Manuals (1)
Updated: AUGUST 1999
mutt_dotlock gives all diagnostics in its return values:
mutt_dotlock tries to implement an NFS-safe dotlocking method which was borrowed from lockfile (1).
If the user can't open file for reading with his normal privileges, mutt_dotlock will return the DL_EX_ERROR exit value to avoid certain attacks against other users' spool files. The code carefully avoids race conditions when checking permissions; for details of all this see the comments in dotlock.c.
Thomas Roessler <email@example.com>
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