쉬귀던전

#include <assert.h>

#include <stdbool.h>

#include <sys/types.h>

#include <unistd.h>

#include <sys/sysctl.h>

static bool AmIBeingDebugged(void)

// Returns true if the current process is being debugged (either

// running under the debugger or has a debugger attached post facto).

{

    int                 junk;

    int                 mib[4];

    struct kinfo_proc   info;

    size_t              size;

    // Initialize the flags so that, if sysctl fails for some bizarre

    // reason, we get a predictable result.

    info.kp_proc.p_flag = 0;

    // Initialize mib, which tells sysctl the info we want, in this case

    // we're looking for information about a specific process ID.

    mib[0] = CTL_KERN;

    mib[1] = KERN_PROC;

    mib[2] = KERN_PROC_PID;

    mib[3] = getpid();

    // Call sysctl.

    size = sizeof(info);

    junk = sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, NULL, 0);

    assert(junk == 0);

    // We're being debugged if the P_TRACED flag is set.

    return ( (info.kp_proc.p_flag & P_TRACED) != 0 );

}