Poor man's atos

on
Compile with:
gcc testcname.m -framework Cocoa /System/Library/PrivateFrameworks/vmutils.framework/vmutils


Get a poor version of atos.


cristi:~/Programming/test diciu$ cat testcname.m 
#import 
#import "vmutil.h"

int stringToAddress(char * str, int * result)
{
        unsigned int addr;
        int allok = 0;
        NSScanner * scanner;

        if(strlen(str) < 2)
                return 0;

        scanner = [NSScanner scannerWithString:[NSString stringWithFormat:@"%s", str]];
        if((str[0] == '0' && (str[1] == 'X' || str[1] == 'x')) ? [scanner scanHexInt:&addr] : [scanner scanInt:&addr])
                allok = 1;
        else
                fprintf(stdout, "Can't parse address: >%s<\n", str);

        *result = addr;
        return allok;
}

int main(int argc, char ** argv)
{
        char in[100];
        task_t port;

        if(argc < 2)
        {
                fprintf(stdout, "pid argument required\n");
                exit(1);
        }

        int pid = atoi(argv[1]);

        NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

        kern_return_t kr = task_for_pid(mach_task_self(), pid, (mach_port_name_t *)&port);

        NSMachOTaskImage * mi = [[NSMachOTaskImage alloc] initWithTask:port];
        while(1)
        {
                if(!fgets(in, 99, stdin))
                        exit(1);

                [[mi memoryCache] startPeeking];

                int addr;
                if(stringToAddress(in, &addr))
                        fprintf(stdout, "%s\n", [mi cnameOfSymbolWithAddress:addr]);

                [[mi memoryCache] stopPeeking];
        }
        [pool release];
}