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libbb: compile capability code only if FEATURE_SETPRIV_CAPABILITIES or RUN_INIT

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2018-02-21 20:13:39 +01:00
parent 7d285c78a3
commit 2af5e3fac3
3 changed files with 10 additions and 4 deletions
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5
include/libbb.h
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@ -1488,6 +1488,7 @@ extern void run_shell(const char *shell, int loginshell, const char **args) NORE
*/
const char *get_shell_name(void) FAST_FUNC;
#if ENABLE_FEATURE_SETPRIV_CAPABILITIES || ENABLE_RUN_INIT
unsigned cap_name_to_number(const char *cap) FAST_FUNC;
void printf_cap(const char *pfx, unsigned cap_no) FAST_FUNC;
void drop_capability(int cap_ordinal) FAST_FUNC;
@ -1499,9 +1500,7 @@ struct caps { \
struct __user_cap_data_struct data[2]; \
}
void getcaps(void *caps) FAST_FUNC;
unsigned cap_name_to_number(const char *name) FAST_FUNC;
void printf_cap(const char *pfx, unsigned cap_no) FAST_FUNC;
#endif
#if ENABLE_SELINUX
extern void renew_current_security_context(void) FAST_FUNC;

3
libbb/capability.c
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@ -3,7 +3,8 @@
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
//kbuild:lib-$(CONFIG_PLATFORM_LINUX) += capability.o
//kbuild:lib-$(CONFIG_FEATURE_SETPRIV_CAPABILITIES) += capability.o
//kbuild:lib-$(CONFIG_RUN_INIT) += capability.o
#include <linux/capability.h>
// #include <sys/capability.h>

6
util-linux/switch_root.c
View File

@ -39,6 +39,12 @@
#include <sys/mount.h>
#if ENABLE_RUN_INIT
# include <sys/prctl.h>
# ifndef PR_CAPBSET_READ
# define PR_CAPBSET_READ 23
# endif
# ifndef PR_CAPBSET_DROP
# define PR_CAPBSET_DROP 24
# endif
# include <linux/capability.h>
// #include <sys/capability.h>
// This header is in libcap, but the functions are in libc.