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kdumpctl: Move temp file in get_kernel_size to global temp dir 

Others will need to use a temporary files, too. In order to avoid
potential clashes of multiple trap handlers move the local temp file
into a global temp dir.

While at it make sure that the trap handler returns the correct exit
code.

Signed-off-by: Philipp Rudo <prudo@redhat.com>
Reviewed-by: Pingfan Liu <piliu@redhat.com>
Reviewed-by: Coiby Xu <coxu@redhat.com>
This commit is contained in:
Philipp Rudo 2023-05-05 17:14:41 +02:00 committed by Coiby Xu
parent 81d89c885f
commit ea00b7db43
2 changed files with 9 additions and 2 deletions
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1
kdump.service
View File

@ -11,6 +11,7 @@ ExecStop=/usr/bin/kdumpctl stop
ExecReload=/usr/bin/kdumpctl reload ExecReload=/usr/bin/kdumpctl reload
RemainAfterExit=yes RemainAfterExit=yes
StartLimitInterval=0 StartLimitInterval=0
PrivateTmp=yes
[Install] [Install]
WantedBy=multi-user.target WantedBy=multi-user.target

10
kdumpctl
View File

@ -45,6 +45,13 @@ if ! dlog_init; then
exit 1 exit 1
fi fi
KDUMP_TMPDIR=$(mktemp -d kdump.XXXX)
trap '
ret=$?;
rm -rf "$KDUMP_TMPDIR"
exit $ret;
' EXIT
_get_dracut_arg() _get_dracut_arg()
{ {
local shortopt longopt n tmp local shortopt longopt n tmp
@ -1193,8 +1200,7 @@ get_kernel_size()
# Prepare temp files: # Prepare temp files:
local tmp img=$1 local tmp img=$1
tmp=$(mktemp /tmp/vmlinux-XXX) tmp="$KDUMP_TMPDIR/vmlinux"
trap 'rm -f "$tmp"' 0
# Try to check if it's a vmlinux already # Try to check if it's a vmlinux already
check_vmlinux "$img" && get_vmlinux_size "$img" && return 0 check_vmlinux "$img" && get_vmlinux_size "$img" && return 0