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| author | Zev Weiss <zev@bewilderbeest.net> | 2017-03-21 20:07:48 -0500 |
|---|---|---|
| committer | Zev Weiss <zev@bewilderbeest.net> | 2017-03-21 20:07:48 -0500 |
| commit | 046266a2f776b770e18115d8c9a764c9498b78a8 (patch) | |
| tree | 962b944ce44a1578d674612d48817f5913bd7a8d | |
| parent | 3be28dc57a7f0698d290e9e8686aa7e0fbec0801 (diff) | |
| download | virtme-046266a2f776b770e18115d8c9a764c9498b78a8.tar.gz | |
virtme-init: avoid a warning from bash
As of version 4.4 bash now warns about null bytes in command
substitutions. Sidestep it here by using sed to strip the null
terminator off the contents of 9pnet_virtio's mount_tag sysfs
attributes.
Signed-off-by: Zev Weiss <zev@bewilderbeest.net>
| -rwxr-xr-x | virtme/guest/virtme-init | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/virtme/guest/virtme-init b/virtme/guest/virtme-init index f7f1069..0a17c2b 100755 --- a/virtme/guest/virtme-init +++ b/virtme/guest/virtme-init @@ -19,7 +19,10 @@ mount -t sysfs -o nosuid,noexec,nodev sys /sys/ declare -A mount_tags for i in /sys/bus/virtio/drivers/9pnet_virtio/virtio*/mount_tag; do - mount_tags["`cat "$i"`"]=1 + # mount_tag is terminated with a NUL byte, which leads to a + # "command substitution: ignored null byte in input" warning from + # bash; use sed instead of a bare 'cat' here to strip it off. + mount_tags["`sed '$s/\x00$//;' "$i"`"]=1 done kver="`uname -r`" |