[358] in SIPB_Linux_Development
zwgc bug that appears under Linux
daemon@ATHENA.MIT.EDU (Erik Nygren)
Wed Jan 26 02:13:03 1994
To: bugs@MIT.EDU
Cc: linux-dev@MIT.EDU, marc@MIT.EDU
Date: Wed, 26 Jan 94 02:12:33 EST
From: Erik Nygren <nygren@MIT.EDU>
In the file port.c in zwgc, the function create_file_append_port
contains the code:
-----------
errno = 0;
oumask = umask(077); /* allow read/write for us only */
out = fopen(filename, "a");
(void) umask(oumask);
if (errno) {
var_set_variable("error", perror_to_string(errno));
return;
}
create_port_from_files(name, 0, out);
-----------
Under Linux, fopen(file,"a") sets errno to non-zero
if the file already exists, even though it has opened the
file properly. As a result, the function exits
and create_port_from_files doesn't get run. The end result
is that appendport in a .zwgc.desc file then does not
work if the file already exists. This problem doesn't
appear on at least dec's. I haven't tried other machines.
--- Erik Nygren
___________________________________________________________________________
The most exciting phrase to hear in | Erik L. Nygren
science, the one that heralds new |
discoveries, is not "Eureka!" (I've | VOICE: 617/225-9395
found it!) but "That's funny ..." |
-- Isaac Asimov | EMAIL: <nygren@mit.edu>
