linux改变自拉起程序运行路径到程序所在路径

//获取拉起程序所在路径

string getOwnerPath(){    char path[1024];    int cnt = readlink("/proc/self/exe",path,1024);    if(cnt<0||cnt>=1024)    {        return "";    }    for(int i=cnt;i>=0;--i)    {        if(path[i]=='/')        {            path[i+1]='\0';            break;        }    }    return string(path);}

bool changeExePath(string &pPath){    pPath = getOwnerPath();    if(" " != pPath)    {        if(0 == chdir(pPath.c_str()))        {            return true;        }    }    return false;}int main(int argc, char * argv[]){    string cPath = "";    if(changeExePath)    {        printf("EXE EXCUTE CHANGE SUCCESS! THE PATH IS %s.",cPath.c_str());    }    else    {        printf("EXE EXCUTE CHANGE FAIL!");    }    return 0;｝