mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-04 02:18:37 +00:00
b29a1e1cf5
This was handled by sysctl but not sysctlbyname. The value returned was wrong. Added a regtest.
44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
#include <sys/types.h>
|
|
#include <sys/sysctl.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
|
|
int main(void)
|
|
{
|
|
int stack_variable = 1;
|
|
unsigned long v1;
|
|
unsigned long v2;
|
|
int name[] = {CTL_KERN, KERN_USRSTACK};
|
|
size_t len = sizeof(unsigned long);
|
|
|
|
if (sysctlbyname("kern.usrstack", &v1, &len, NULL, 0) < 0) {
|
|
perror("sysctlbyname failed:");
|
|
exit(-1);
|
|
}
|
|
|
|
if (sysctl(name, 2, &v2, &len, NULL, 0) < 0) {
|
|
perror("sysctl failed:");
|
|
exit(-1);
|
|
}
|
|
|
|
if (v1 == v2) {
|
|
printf("OK 1\n");
|
|
} else {
|
|
printf("FAIL usrstack different\n");
|
|
printf("v1 %lx v2 %lx\n", v1, v2);
|
|
}
|
|
|
|
|
|
/* the purpose of this is to check that the sysctl isn't
|
|
returning the host stack. I expec the difference to be less than 0x1000 */
|
|
if (v1 - (unsigned long)&stack_variable > 0x2000U) {
|
|
printf("FAIL usrstack fishy\n");
|
|
printf("v1 %lx stack_variable %p diff %lx\n", v1, &stack_variable, v1 - (unsigned long)&stack_variable);
|
|
} else {
|
|
printf("OK 2\n");
|
|
}
|
|
}
|
|
|