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Make setarch/linux32/linux64 independently selectable

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-11-13 22:56:04 +01:00
parent 67fd2f2858
commit c314ca9016
1 changed files with 24 additions and 5 deletions
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29
util-linux/setarch.c
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@ -15,12 +15,28 @@
//config: specified program (usually a shell). It only makes sense to have
//config: this util on a system that supports both 64bit and 32bit userland
//config: (like amd64/x86, ppc64/ppc, sparc64/sparc, etc...).
//config:
//config:config LINUX32
//config: bool "linux32"
//config: default y
//config: select PLATFORM_LINUX
//config: help
//config: Alias to "setarch linux32".
//config:
//config:config LINUX64
//config: bool "linux64"
//config: default y
//config: select PLATFORM_LINUX
//config: help
//config: Alias to "setarch linux64".
//applet:IF_SETARCH(APPLET(setarch, BB_DIR_BIN, BB_SUID_DROP))
//applet:IF_SETARCH(APPLET_ODDNAME(linux32, setarch, BB_DIR_BIN, BB_SUID_DROP, linux32))
//applet:IF_SETARCH(APPLET_ODDNAME(linux64, setarch, BB_DIR_BIN, BB_SUID_DROP, linux64))
//applet:IF_LINUX32(APPLET_ODDNAME(linux32, setarch, BB_DIR_BIN, BB_SUID_DROP, linux32))
//applet:IF_LINUX64(APPLET_ODDNAME(linux64, setarch, BB_DIR_BIN, BB_SUID_DROP, linux64))
//kbuild:lib-$(CONFIG_SETARCH) += setarch.o
//kbuild:lib-$(CONFIG_LINUX32) += setarch.o
//kbuild:lib-$(CONFIG_LINUX64) += setarch.o
//usage:#define setarch_trivial_usage
//usage: "PERSONALITY [-R] PROG ARGS"
@ -58,12 +74,15 @@ int setarch_main(int argc UNUSED_PARAM, char **argv)
if (ENABLE_SETARCH && applet_name[0] == 's'
&& argv[1] && is_prefixed_with(argv[1], "linux")
) {
applet_name = argv[1];
argv++;
applet_name = argv[0];
}
if (applet_name[5] == '6') /* linux64 */
if ((!ENABLE_SETARCH && !ENABLE_LINUX32) || applet_name[5] == '6')
/* linux64 */
pers = PER_LINUX;
else if (applet_name[5] == '3') /* linux32 */
else
if ((!ENABLE_SETARCH && !ENABLE_LINUX64) || applet_name[5] == '3')
/* linux32 */
pers = PER_LINUX32;
else
bb_show_usage();