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test -r /dev/stdin fails in configure
From: |
Matthias Benkmann |
Subject: |
test -r /dev/stdin fails in configure |
Date: |
Sat, 6 Oct 2001 18:54:06 +0200 |
From: bash
To: bug-bash@gnu.org
Subject: test -r /dev/stdin fails in configure
Configuration Information [Automatically generated, do not change]:
Machine: i586
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -DPROGRAM='bash' -DCONF_HOSTTYPE='i586' -
DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i586-pc-linux-gnu' -
DCONF_VENDOR='pc' -DSHELL -DHAVE_CONFIG_H -D_FILE_OFFSET_BITS=64 -I. -
I. -I./include -I./lib -I/usr/include -g -O2
uname output: Linux buddha 2.2.17 #1 Fri Feb 2 14:06:58 CET 2001 i586
unknown
Machine Type: i586-pc-linux-gnu
Bash Version: 2.05
Patch Level: 0
Release Status: release
Description:
When I log in as root, then su to a normal user account, /dev/tty?
remains owned by root. Because /dev/tty? is not world-readable,
test -r /dev/tty?
fails.
Because /dev/stdin is a symlink to /dev/fd/0 which is a symlink to
/dev/tty?, test -r /dev/stdin fails, too.
Bash's configure script uses test -r /dev/stdin to test if /dev/stdin
is available, so bash erroneously believes that /dev/stdin is not
present.
Repeat-By:
log in as root (Linux text console, no X)
su to an unpriviledged user account (I'm using the su from the
shadow package, not sh-utils)
cd bash-2.05
./configure
bash reports
checking whether /dev/fd is available... absent
checking whether /dev/stdin stdout stderr are available... absent
even though /dev/fd and /dev/stdin are available and functional.
Fix:
I see no reason for testing with -r. A simple test -e should be
sufficient.
----
If everything seems to be going well, you have obviously overlooked something.
- test -r /dev/stdin fails in configure,
Matthias Benkmann <=