[PATCH] setarch, add generic support for setarch $(uname -m) ...

Ruediger Meier
2014-05-29T00:53:21Z

From: Ruediger Meier <ruediger.meier@ga-group.nl>

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>
---
sys-utils/setarch.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/sys-utils/setarch.c b/sys-utils/setarch.c
index 8e2b6e5..f335f83 100644
--- a/sys-utils/setarch.c
+++ b/sys-utils/setarch.c
@@ -202,9 +202,25 @@ set_arch(const char *pers, unsigned long options, int list)
{PER_LINUX, "alphaev6", "alpha"},
{PER_LINUX, "alphaev67", "alpha"},
#endif
+ {-1, NULL, NULL}, /* place holder, eventually filled up at runtime */
{-1, NULL, NULL}
};

+ /* Add the trivial transition {PER_LINUX, machine, machine} if no such
+ target_arch is hardcoded yet. */
+ uname(&un);
+ for (i = 0; transitions[i].perval >= 0; i++)
+ if(!strcmp(un.machine, transitions[i].target_arch))
+ break;
+ if (transitions[i].perval < 0) {
+ unsigned long wrdsz = CHAR_BIT * sizeof(void*);
+ if (wrdsz == 32 || wrdsz == 64) {
+ transitions[i].perval = wrdsz == 32 ? PER_LINUX32 : PER_LINUX;
+ transitions[i].target_arch = un.machine;
+ transitions[i].result_arch = un.machine;
+ }
+ }
+
if (list) {
for(i = 0; transitions[i].target_arch != NULL; i++)
printf("%s\n", transitions[i].target_arch);
--
1.8.4.5