check mktemp return value

in slackware the default mktemp is not from coreutils. A simply make in test directory mangled my rootfs due to initdir is blank

Also mktemp could failed with other reason like ENOSPC or EPERM

Signed-off-by Dave Young <[email protected]>

---
 dracut |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

dracut +4 -0

index c9329bd..8237f7a 100755
@@ -472,6 +472,10 @@ fi
 
 readonly TMPDIR=/var/tmp
 readonly initdir=$(mktemp --tmpdir=/var/tmp/ -d -t initramfs.XXXXXX)
+[ -z $initdir ] && {
+    dfatal "mktemp failed."
+    exit 1
+}
 
 # clean up after ourselves no matter how we die.
 trap 'ret=$?;[[ $keep ]] && echo "Not removing $initdir." >&2 || rm -rf

"$initdir";exit $ret;' EXIT

Quoted 25 lines · Dave Young

in slackware the default mktemp is not from coreutils. A simply make in test directory mangled my rootfs due to initdir is blank

Also mktemp could failed with other reason like ENOSPC or EPERM

Signed-off-by Dave Young <[email protected]>

---
 dracut |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

dracut +4 -0

index c9329bd..8237f7a 100755
@@ -472,6 +472,10 @@ fi
 
 readonly TMPDIR=/var/tmp
 readonly initdir=$(mktemp --tmpdir=/var/tmp/ -d -t initramfs.XXXXXX)
+[ -z $initdir ] && {
+    dfatal "mktemp failed."
+    exit 1
+}
 

Quoted 3 lines

dracut +0 -0

 # clean up after ourselves no matter how we die.
 trap 'ret=$?;[[ $keep ]] && echo "Not removing $initdir." >&2 || rm -rf

"$initdir";exit $ret;' EXIT

pushed...

had to hand edit, because your mailer automatically broke the line.