/dev/fd should be symlink (was: BASH: Process substitution fails)
Hi,
on the latest edge version of bash, process substitution fails. If you run:
SNIP 8< =
snow:~# read x y z < <(echo 1 2 3); echo $x
-bash: /dev/fd/62: No such file or directory
snow:~#
>8 = SNAP
you get the above error. It usually works.
I already talked to the guys in #bash on freenode and they think (!) it is uclibc related.
On a GNU libc machine one gets this result:
= >8 = SNIP ===
[root@bomber ~]# read x y z < <(echo 1 2 3); echo $x
1
[root@bomber ~]#
SNAP = 8<
Some additional information:
snow:~# apk info bash
bash-4.2.037-r0 description:
The GNU Bourne Again shell
bash-4.2.037-r0 webpage:
http://www.gnu.org/software/bash/bash.html
bash-4.2.037-r0 installed size:
741376
snow:~#
snow:~# set | grep -E ^BASH
BASH=/bin/bash
BASHOPTS=cmdhist:expand_aliases:extglob:extquote:force_fignore:interactive_comments:login_shell:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_COMPLETION=/etc/bash_completion
BASH_COMPLETION_COMPAT_DIR=/etc/bash_completion.d
BASH_COMPLETION_DIR=/etc/bash_completion.d
BASH_LINENO=()
BASH_SOURCE=()
BASH_VERSINFO=([0]=“4” [1]=“2” [2]=“37” [3]=“2” [4]=“release”
[5]=“x86_64-unknown-linux-gnu”)
BASH_VERSION=‘4.2.37(2)-release’
snow:~#
cu
(from redmine: issue id 1465, created on 2012-11-10, closed on 2012-12-24)
- Changesets:
- Revision 20dfee5a by Natanael Copa on 2012-11-19T07:43:25Z:
main/busybox-initscripts: fix /dev/fd symlink
ref #1465
I think the initramfs create /dev/fd as a dir. When mdev-mount later runs
'ln -snf /proc/self/fd /dev/fd' the 'fd' symlink ends up as /dev/fd/fd.
We fix this by always remove /dev/fd before creating the symlink.- Revision 5ec48327 by Natanael Copa on 2012-11-19T07:57:27Z:
main/udev: make sure /dev/fd is a symlink to /proc/self/fd
ref #1465- Revision 6438be23 by Natanael Copa on 2012-12-21T16:23:26Z:
main/busybox-initscripts: fix /dev/fd symlink
ref #1465
I think the initramfs create /dev/fd as a dir. When mdev-mount later runs
'ln -snf /proc/self/fd /dev/fd' the 'fd' symlink ends up as /dev/fd/fd.
We fix this by always remove /dev/fd before creating the symlink.
(cherry picked from commit 20dfee5aff22b445738a27d737b31121b709d920)