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libcap: libcap executables

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* add option to install additional executables - capsh, getcap, getpcaps, setcap
* capsh can be configured to execute a different shell rather than /bin/bash

Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
This commit is contained in:
Toni Uhlig
2018-03-02 18:48:46 +01:00
parent ab786cb3ac
commit 8f113f155b
2 changed files with 67 additions and 4 deletions
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libs/libcap/Makefile
+33 -4
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@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=libcap
PKG_VERSION:=2.25
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
PKG_SOURCE_URL:=@KERNEL/linux/libs/security/linux-privs/libcap2
@@ -30,19 +30,41 @@ define Package/libcap
URL:=http://www.kernel.org/pub/linux/libs/security/linux-privs/libcap2/
endef
define Package/libcap/config
if PACKAGE_libcap
config PACKAGE_libcap-bin
bool "install libcap executables"
help
Install capsh, getcap, getpcaps, setcap into the target image.
default n
config PACKAGE_libcap-bin-capsh-shell
string "capsh shell"
depends on PACKAGE_libcap-bin
help
Set the capsh shell.
default "/bin/sh"
endif
endef
MAKE_FLAGS += \
CFLAGS="$(TARGET_CFLAGS)" \
BUILD_CC="$(CC)" \
BUILD_CFLAGS="$(FPIC) -I$(PKG_BUILD_DIR)/libcap/include" \
CFLAGS="$(TARGET_CFLAGS)" \
LD="$(TARGET_CC)" \
LDFLAGS="$(TARGET_LDFLAGS) -shared" \
LD="$(TARGET_CC) -Wl,-x -shared" \
LDFLAGS="$(TARGET_LDFLAGS)" \
INDENT="| true" \
PAM_CAP="no" \
RAISE_SETFCAP="no" \
DYNAMIC="yes" \
lib="lib"
ifneq ($(CONFIG_PACKAGE_libcap-bin-capsh-shell),)
TARGET_CFLAGS += -DSHELL='\"$(CONFIG_PACKAGE_libcap-bin-capsh-shell)\"'
endif
define Build/InstallDev
$(INSTALL_DIR) $(1)/usr/include/sys
$(CP) $(PKG_INSTALL_DIR)/usr/include/* $(1)/usr/include/
@@ -53,6 +75,13 @@ endef
define Package/libcap/install
$(INSTALL_DIR) $(1)/usr/lib
$(CP) $(PKG_INSTALL_DIR)/lib/libcap.so* $(1)/usr/lib/
ifneq ($(CONFIG_PACKAGE_libcap-bin),)
$(INSTALL_DIR) $(1)/usr/sbin
$(CP) $(PKG_INSTALL_DIR)/sbin/capsh $(1)/usr/sbin/
$(CP) $(PKG_INSTALL_DIR)/sbin/getcap $(1)/usr/sbin/
$(CP) $(PKG_INSTALL_DIR)/sbin/getpcaps $(1)/usr/sbin/
$(CP) $(PKG_INSTALL_DIR)/sbin/setcap $(1)/usr/sbin/
endif
endef
$(eval $(call BuildPackage,libcap))