diff options
Diffstat (limited to 'main.cxx')
| -rw-r--r-- | main.cxx | 39 |
1 files changed, 36 insertions, 3 deletions
@@ -471,6 +471,38 @@ int parse_kernel_config (systemtap_session &s) return 0; } + +int parse_kernel_exports (systemtap_session &s) +{ + string kernel_exports_file = s.kernel_build_tree + "/Module.symvers"; + struct stat st; + int rc = stat(kernel_exports_file.c_str(), &st); + if (rc != 0) + { + clog << "Checking \"" << kernel_exports_file << "\" failed: " << strerror(errno) << endl + << "Ensure kernel development headers & makefiles are installed." << endl; + return rc; + } + + ifstream kef (kernel_exports_file.c_str()); + string line; + while (getline (kef, line)) + { + vector<string> tokens; + tokenize (line, tokens, "\t"); + if (tokens.size() == 4 && + tokens[2] == "vmlinux" && + tokens[3].substr(0,13) == string("EXPORT_SYMBOL")) + s.kernel_exports.insert (tokens[1]); + } + if (s.verbose > 2) + clog << "Parsed kernel \"" << kernel_exports_file << "\", number of vmlinux exports: " << s.kernel_exports.size() << endl; + + kef.close(); + return 0; +} + + /* * Returns a string describing memory resource usage. * Since it seems getrusage() doesn't maintain the mem related fields, @@ -1129,9 +1161,10 @@ main (int argc, char * const argv []) // Now that no further changes to s.kernel_build_tree can occur, let's use it. if (parse_kernel_config (s) != 0) - { - exit (1); - } + exit (1); + + if (parse_kernel_exports (s) != 0) + exit (1); // Create the name of the C source file within the temporary |