Upstream | cc2ee17 | 1970-01-12 13:46:40 +0000 | [diff] [blame^] | 1 | /** |
| 2 | * @file locate_images.cpp |
| 3 | * Command-line helper |
| 4 | * |
| 5 | * @remark Copyright 2002 OProfile authors |
| 6 | * @remark Read the file COPYING |
| 7 | * |
| 8 | * @author Philippe Elie |
| 9 | * @author John Levon |
| 10 | */ |
| 11 | |
| 12 | #include "file_manip.h" |
| 13 | #include "locate_images.h" |
| 14 | |
| 15 | #include <cerrno> |
| 16 | #include <iostream> |
| 17 | #include <sstream> |
| 18 | #include <cstdlib> |
| 19 | |
| 20 | using namespace std; |
| 21 | |
| 22 | |
| 23 | void extra_images::populate(vector<string> const & paths) |
| 24 | { |
| 25 | vector<string>::const_iterator cit = paths.begin(); |
| 26 | vector<string>::const_iterator end = paths.end(); |
| 27 | for (; cit != end; ++cit) { |
| 28 | string const path = op_realpath(*cit); |
| 29 | list<string> file_list; |
| 30 | create_file_list(file_list, path, "*", true); |
| 31 | list<string>::const_iterator lit = file_list.begin(); |
| 32 | list<string>::const_iterator lend = file_list.end(); |
| 33 | for (; lit != lend; ++lit) { |
| 34 | value_type v(op_basename(*lit), op_dirname(*lit)); |
| 35 | images.insert(v); |
| 36 | } |
| 37 | } |
| 38 | } |
| 39 | |
| 40 | |
| 41 | vector<string> const extra_images::find(string const & name) const |
| 42 | { |
| 43 | extra_images::matcher match(name); |
| 44 | return find(match); |
| 45 | } |
| 46 | |
| 47 | |
| 48 | vector<string> const |
| 49 | extra_images::find(extra_images::matcher const & match) const |
| 50 | { |
| 51 | vector<string> matches; |
| 52 | |
| 53 | const_iterator cit = images.begin(); |
| 54 | const_iterator end = images.end(); |
| 55 | |
| 56 | for (; cit != end; ++cit) { |
| 57 | if (match(cit->first)) |
| 58 | matches.push_back(cit->second + '/' + cit->first); |
| 59 | } |
| 60 | |
| 61 | return matches; |
| 62 | } |
| 63 | |
| 64 | |
| 65 | namespace { |
| 66 | |
| 67 | /** |
| 68 | * Function object for matching a module filename, which |
| 69 | * has its own special mangling rules in 2.6 kernels. |
| 70 | */ |
| 71 | struct module_matcher : public extra_images::matcher { |
| 72 | public: |
| 73 | explicit module_matcher(string const & s) |
| 74 | : extra_images::matcher(s) {} |
| 75 | |
| 76 | virtual bool operator()(string const & candidate) const { |
| 77 | if (candidate.length() != value.length()) |
| 78 | return false; |
| 79 | |
| 80 | for (string::size_type i = 0 ; i < value.length() ; ++i) { |
| 81 | if (value[i] == candidate[i]) |
| 82 | continue; |
| 83 | if (value[i] == '_' && |
| 84 | (candidate[i] == ',' || candidate[i] == '-')) |
| 85 | continue; |
| 86 | return false; |
| 87 | } |
| 88 | |
| 89 | return true; |
| 90 | } |
| 91 | }; |
| 92 | |
| 93 | } // anon namespace |
| 94 | |
| 95 | |
| 96 | string const find_image_path(string const & archive_path, |
| 97 | string const & image_name, |
| 98 | extra_images const & extra_images, |
| 99 | image_error & error) |
| 100 | { |
| 101 | error = image_ok; |
| 102 | |
| 103 | string const image = op_realpath(archive_path + image_name); |
| 104 | |
| 105 | // simplest case |
| 106 | if (op_file_readable(image)) { |
| 107 | error = image_ok; |
| 108 | return image_name; |
| 109 | } |
| 110 | |
| 111 | if (errno == EACCES) { |
| 112 | error = image_unreadable; |
| 113 | return image_name; |
| 114 | } |
| 115 | |
| 116 | string const base = op_basename(image); |
| 117 | |
| 118 | vector<string> result = extra_images.find(base); |
| 119 | |
| 120 | // not found, try a module search |
| 121 | if (result.empty()) |
| 122 | result = extra_images.find(module_matcher(base + ".ko")); |
| 123 | |
| 124 | if (result.empty()) { |
| 125 | error = image_not_found; |
| 126 | return image_name; |
| 127 | } |
| 128 | |
| 129 | if (result.size() > 1) { |
| 130 | error = image_multiple_match; |
| 131 | return image_name; |
| 132 | } |
| 133 | |
| 134 | return result[0]; |
| 135 | } |