* [Buildroot] [Bug 15838] New: dhcp server creates symlinks to /tmp on host
@ 2023-11-01 22:01 bugzilla
2024-06-15 15:13 ` [Buildroot] [Bug 15838] " bugzilla
0 siblings, 1 reply; 2+ messages in thread
From: bugzilla @ 2023-11-01 22:01 UTC (permalink / raw)
To: buildroot
https://bugs.busybox.net/show_bug.cgi?id=15838
Bug ID: 15838
Summary: dhcp server creates symlinks to /tmp on host
Product: buildroot
Version: unspecified
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
Assignee: unassigned@buildroot.uclibc.org
Reporter: jonas.d.karlsson@gmail.com
CC: buildroot@uclibc.org
Target Milestone: ---
In package/dhcp/dhcp.mk this section can be found:
ifeq ($(BR2_PACKAGE_DHCP_SERVER),y)
define DHCP_INSTALL_CTL_LIBS
$(MAKE) -C $(@D)/dhcpctl install-exec DESTDIR=$(TARGET_DIR)
endef
define DHCP_INSTALL_SERVER
mkdir -p $(TARGET_DIR)/var/lib
(cd $(TARGET_DIR)/var/lib; ln -snf /tmp dhcp)
$(MAKE) -C $(@D)/server DESTDIR=$(TARGET_DIR) install-sbinPROGRAMS
$(INSTALL) -m 0644 -D package/dhcp/dhcpd.conf \
$(TARGET_DIR)/etc/dhcp/dhcpd.conf
endef
endif
The symlink that is created from /var/lib/dhcp to /tmp seem to cause a symlink
to the host /tmp which creates access privilege problems.
Shouldn't the symlink be to ../../tmp rather than /tmp like the misc symlink
under /var/lib? See below
cd output/target/var/lib
ls -al
drwxr-xr-x 2 jonkar jonkar 4096 nov 1 17:09 arpd
lrwxrwxrwx 1 jonkar jonkar 4 nov 1 18:27 dhcp -> /tmp
lrwxrwxrwx 1 jonkar jonkar 9 nov 1 16:13 misc -> ../../tmp
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