* Re: zsh sometimes sets $PWD to "." when executed
[not found] <20031224182536.GU1501@ay.nerim.net>
@ 2004-07-23 17:40 ` Clint Adams
2004-07-23 18:03 ` Bart Schaefer
2004-07-23 18:34 ` Vincent Lefevre
0 siblings, 2 replies; 3+ messages in thread
From: Clint Adams @ 2004-07-23 17:40 UTC (permalink / raw)
To: zsh-workers; +Cc: Vincent Lefevre, 221875-forwarded
Is this still happening? What does "pwd -P" return in such
circumstances?
> I'm reassigning the bug to zsh, as I now know that the problem doesn't
> come from screen. However it has always occurred in screen (but this
> isn't necessarily meaningful).
>
> This time, the bug occurred on another account (but still in screen and
> still in an NFS directory). Instead of opening a new screen window, I did
> the following, where z is:
>
> alias z='if [[ -o login ]]
> then exec $SHELL -l;
> else exec $SHELL;
> fi'
>
> liberte:~/oldtests[130]> z <18:13:16
> zshenv...
> zshrc...
> Shell level: 2 (login shell)
> The tty is frozen
> zlogin...
> liberte:.> pwd <18:13:19
> .
> liberte:.> ll /proc/$$ <18:14:00
> total 0
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 cantmove
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 cmdline
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 cpu
> lrwxrwxrwx 1 vlefevre lip 0 Dec 24 18:14 cwd -> /home/vlefevre/
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 disclosure
> -r-------- 1 vlefevre lip 0 Dec 24 18:14 environ
> lrwxrwxrwx 1 vlefevre lip 0 Dec 24 18:14 exe -> /home/vlefevre/bin-i386/zsh*
> dr-x------ 2 vlefevre lip 0 Dec 24 18:14 fd/
> --w--w--w- 1 vlefevre lip 0 Dec 24 18:14 goto
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 lock
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 maps
> -rw------- 1 vlefevre lip 0 Dec 24 18:14 mem
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 migfilter
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 miggroup
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 mignodes
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 migpolicy
> --w------- 1 vlefevre lip 0 Dec 24 18:14 migrate
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 mounts
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 nmigs
> lrwxrwxrwx 1 vlefevre lip 0 Dec 24 18:14 root -> //
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 selected
> -rw-r--r-- 1 vlefevre lip 0 Dec 24 18:14 sigmig
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 stat
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 statm
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 status
> -r--r--r-- 1 vlefevre lip 0 Dec 24 18:14 where
>
> Both $PWD and the cwd are incorrect. They should both have been
> "/home/vlefevre/oldtests".
>
> Or is it a bug in the Linux kernel for the cwd part? FYI, for both
> machines where the bug occurred, the kernel is respectively 2.4.20
> and 2.4.22.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: zsh sometimes sets $PWD to "." when executed
2004-07-23 17:40 ` zsh sometimes sets $PWD to "." when executed Clint Adams
@ 2004-07-23 18:03 ` Bart Schaefer
2004-07-23 18:34 ` Vincent Lefevre
1 sibling, 0 replies; 3+ messages in thread
From: Bart Schaefer @ 2004-07-23 18:03 UTC (permalink / raw)
To: zsh-workers; +Cc: Vincent Lefevre, 221875-forwarded
This happens when zsh gets a failure return from stat(".", &sbuf), e.g.
because of a permission problem. If zsh can't stat() the current
directory, it sets its internal pwd string to dot and gives up.
Try compiling this:
#include <stdio.h>
#include <sys/stat.h>
main() {
struct stat sbuf;
if (stat(".", &sbuf) < 0) perror("");
}
Then run it in the same circumstance in which zsh fails.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: zsh sometimes sets $PWD to "." when executed
2004-07-23 17:40 ` zsh sometimes sets $PWD to "." when executed Clint Adams
2004-07-23 18:03 ` Bart Schaefer
@ 2004-07-23 18:34 ` Vincent Lefevre
1 sibling, 0 replies; 3+ messages in thread
From: Vincent Lefevre @ 2004-07-23 18:34 UTC (permalink / raw)
To: Clint Adams; +Cc: zsh-workers, 221875-forwarded
On 2004-07-23 13:40:44 -0400, Clint Adams wrote:
> Is this still happening? What does "pwd -P" return in such
> circumstances?
No, but I haven't had any NFS problem since.
--
Vincent Lefèvre <vincent@vinc17.org> - Web: <http://www.vinc17.org/>
100% validated (X)HTML - Acorn / RISC OS / ARM, free software, YP17,
Championnat International des Jeux Mathématiques et Logiques, etc.
Work: CR INRIA - computer arithmetic / SPACES project at LORIA
^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] <20031224182536.GU1501@ay.nerim.net>
2004-07-23 17:40 ` zsh sometimes sets $PWD to "." when executed Clint Adams
2004-07-23 18:03 ` Bart Schaefer
2004-07-23 18:34 ` Vincent Lefevre
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