From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <049e01c318d1$02194d70$3f00a8c0@MERCURY>
From: "Andrew Simmons" <andrew.simmons@monitorbm.co.nz>
To: <9fans@cse.psu.edu>
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Subject: [9fans] u9fs query
Date: Tue, 13 May 2003 09:54:05 +1200
Topicbox-Message-UUID: aa19a360-eacb-11e9-9e20-41e7f4b1d025

In the source I'm looking at for useropen, I see:

 case OREAD:
  a = R_OK;
...
 case OWRITE:
     a = R_OK;

and subsequently

 if(S_ISDIR(fid->st.st_mode)){
  if(a != R_OK){
   fprint(2, "attempt by %s to open dir %d\n", fid->u->name, omode);
   *ep = Eperm;
   return -1;

which seems to indicate that it's ok to open a directory for writing as well
as reading, which I took open(5) to say was not allowed. Could some kind
soul explain? Thanks.