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-rw-r--r--include/image.mk10
1 files changed, 6 insertions, 4 deletions
diff --git a/include/image.mk b/include/image.mk
index 29328b314e..c72ec81806 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -111,7 +111,8 @@ endif
ifneq ($(CONFIG_TARGET_ROOTFS_TARGZ),)
define Image/mkfs/targz
- $(TAR) -zcf $(BIN_DIR)/$(IMG_PREFIX)-rootfs.tar.gz --numeric-owner --owner=0 --group=0 -C $(TARGET_DIR)/ .
+ # Preserve permissions (-p) when building as non-root user
+ $(TAR) -czpf $(BIN_DIR)/$(IMG_PREFIX)-rootfs.tar.gz --numeric-owner --owner=0 --group=0 -C $(TARGET_DIR)/ .
endef
endif
@@ -137,9 +138,10 @@ endif
define Image/mkfs/prepare/default
- - $(FIND) $(TARGET_DIR) -type f -not -perm +0100 -not -name 'ssh_host*' -print0 | $(XARGS) -0 chmod 0644
- - $(FIND) $(TARGET_DIR) -type f -perm +0100 -print0 | $(XARGS) -0 chmod 0755
- - $(FIND) $(TARGET_DIR) -type d -print0 | $(XARGS) -0 chmod 0755
+ # Use symbolic permissions to avoid clobbering SUID/SGID/sticky bits
+ - $(FIND) $(TARGET_DIR) -type f -not -perm +0100 -not -name 'ssh_host*' -print0 | $(XARGS) -0 chmod u+rw,g+r,o+r
+ - $(FIND) $(TARGET_DIR) -type f -perm +0100 -print0 | $(XARGS) -0 chmod u+rwx,g+rx,o+rx
+ - $(FIND) $(TARGET_DIR) -type d -print0 | $(XARGS) -0 chmod u+rwx,g+rx,o+rx
$(INSTALL_DIR) $(TARGET_DIR)/tmp
chmod 0777 $(TARGET_DIR)/tmp
endef