1 #include <errno.h>
2 #include <fstream>
3 #include <iostream>
4 #include <regex>
5 #include <string>
6 #include <string.h>
7 
main(int argc,char * argv[])8 int main(int argc, char * argv[]) {
9     if (argc != 2) {
10         std::cerr << "usage: " << argv[0] << ": libname\n";
11         return -1;
12     }
13     std::regex reg(std::string("^([a-f0-9]+)\\-[0-9a-f]+\\s+.+\\s+(\\d+)\\s+.+\\s+\\d+\\s+") + std::string(argv[1]) + std::string("\\s*$"));
14 
15     /* open /proc/self/maps */
16     std::string ln;
17     std::ifstream m_file("/proc/self/maps");
18     if (!m_file) {
19         std::cerr << "Unable to open /proc/self/maps " << strerror(errno) << "\n";
20         return -1;
21     }
22     while (getline(m_file, ln)) {
23         std::smatch sm;
24         if (std::regex_match (ln,sm, reg)) {
25             if (std::stoi(sm[2]) == 0) {
26                 std::cout << sm[1];
27                 return 0;
28             }
29         }
30     }
31     return -1;
32 }
33