[966] in Athena Bugs
6.0C: bug in toehold
daemon@ATHENA.MIT.EDU (John Carr)
Sat Sep 17 22:20:26 1988
To: bugs@ATHENA.MIT.EDU
Date: Sat, 17 Sep 88 22:19:55 EDT
From: John Carr <jfc@ATHENA.MIT.EDU>
After toehold exec()s the X server, it does a perror() to catch a failed
exec. This will fail because stderr was closed before the exec.
source/4.3/etc.athena/toehold.c
180 fclose(stderr); /* this forces X to open it's own logfile */
...
184 execv(prog, xargv);
185 perror("executing X server");
...
It is possible to recover stderr by dup(2) before the exec, and dup() and
fdopen() after (you have to save and restore errno to do this correctly).
Alternatively, X could me modified to add a flag to the X server to open
a logfile regardless of the state of stderr.
--John Carr
