https://bugs.openldap.org/show_bug.cgi?id=9385

Issue ID: 9385 Summary: Opening an env with MDB_NOSUBDIR with no existing file returns error Product: LMDB Version: unspecified Hardware: All OS: Mac OS Status: UNCONFIRMED Severity: normal Priority: --- Component: liblmdb Assignee: bugs@openldap.org Reporter: kriszyp@gmail.com Target Milestone: ---

Created attachment 776 --> https://bugs.openldap.org/attachment.cgi?id=776&action=edit A fix to tolerate stat call on non-existing file

Calling mdb_env_open with a file path to a file that doesn't exist yet, with MDB_NOSUBDIR on a non-Windows OS will return an error indicating that the file doesn't exist. This is supposed to create a new file, and works properly on the mdb.master branch, and still functions properly on Windows. The error is due to the stat() call in mdb_env_open prior to the file existing.

I attached a patch that tolerates the absence of the file before checking if the file is on a block device. I am not sure if this is the appropriate fix, or if would be better to move this check later in mdb_env_open after the file is created, or alternately, determining the parent directory and calling stat on that.