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2ed04863 WC |
1 | // systemtap debuginfo rpm finder |
2 | // Copyright (C) 2009 Red Hat Inc. | |
3 | // | |
4 | // This file is part of systemtap, and is free software. You can | |
5 | // redistribute it and/or modify it under the terms of the GNU General | |
6 | // Public License (GPL); either version 2, or (at your option) any | |
7 | // later version. | |
8 | ||
9 | #include "config.h" | |
10 | #include "session.h" | |
11 | #include "rpm_finder.h" | |
12 | ||
13 | #include <iostream> | |
14 | #include <fstream> | |
15 | #include <sstream> | |
16 | #include <cerrno> | |
17 | #include <cstdlib> | |
18 | ||
19 | using namespace std; | |
20 | ||
21 | #ifdef HAVE_LIBRPM | |
22 | ||
23 | extern "C" { | |
24 | ||
25 | #define _RPM_4_4_COMPAT | |
26 | #include <string.h> | |
27 | #include <rpm/rpmlib.h> | |
28 | #include <rpm/rpmts.h> | |
29 | #include <rpm/rpmdb.h> | |
30 | #include <rpm/header.h> | |
31 | ||
32 | #ifndef xfree | |
33 | #define xfree free | |
34 | #endif | |
35 | ||
36 | } | |
37 | ||
38 | /* Returns the count of newly added rpms. */ | |
39 | /* based on the code in F11 gdb-6.8.50.20090302 source rpm */ | |
40 | ||
41 | static int | |
42 | missing_rpm_enlist (systemtap_session& sess, const char *filename) | |
43 | { | |
44 | static int rpm_init_done = 0; | |
45 | rpmts ts; | |
46 | rpmdbMatchIterator mi; | |
47 | int count = 0; | |
48 | ||
49 | if (filename == NULL) | |
50 | return 0; | |
51 | ||
52 | if (!rpm_init_done) | |
53 | { | |
54 | static int init_tried; | |
55 | ||
56 | /* Already failed the initialization before? */ | |
57 | if (init_tried) | |
58 | return 0; | |
59 | init_tried = 1; | |
60 | ||
61 | if (rpmReadConfigFiles(NULL, NULL) != 0) | |
62 | { | |
63 | cerr << "Error reading the rpm configuration files" << endl; | |
64 | return 0; | |
65 | } | |
66 | ||
67 | rpm_init_done = 1; | |
68 | } | |
69 | ||
70 | ts = rpmtsCreate(); | |
71 | ||
72 | mi = rpmtsInitIterator(ts, RPMTAG_BASENAMES, filename, 0); | |
73 | if (mi != NULL) | |
74 | { | |
75 | for (;;) | |
76 | { | |
77 | Header h; | |
78 | char *debuginfo, *s, *s2; | |
79 | errmsg_t err; | |
80 | size_t srcrpmlen = sizeof (".src.rpm") - 1; | |
81 | size_t debuginfolen = sizeof ("-debuginfo") - 1; | |
82 | rpmdbMatchIterator mi_debuginfo; | |
83 | ||
84 | h = rpmdbNextIterator(mi); | |
85 | if (h == NULL) | |
86 | break; | |
87 | ||
88 | /* Verify the debuginfo file is not already installed. */ | |
89 | ||
90 | debuginfo = headerSprintf(h, "%{sourcerpm}-debuginfo.%{arch}", | |
91 | rpmTagTable, rpmHeaderFormats, &err); | |
92 | ||
93 | if (!debuginfo) | |
94 | { | |
95 | cerr << "Error querying the rpm file `" << filename << "': " | |
96 | << err << endl; | |
97 | continue; | |
98 | } | |
99 | /* s = `.src.rpm-debuginfo.%{arch}' */ | |
100 | s = strrchr (debuginfo, '-') - srcrpmlen; | |
101 | s2 = NULL; | |
102 | if (s > debuginfo && memcmp (s, ".src.rpm", srcrpmlen) == 0) | |
103 | { | |
104 | /* s2 = `-%{release}.src.rpm-debuginfo.%{arch}' */ | |
105 | s2 = (char *) memrchr (debuginfo, '-', s - debuginfo); | |
106 | } | |
107 | if (s2) | |
108 | { | |
109 | /* s2 = `-%{version}-%{release}.src.rpm-debuginfo.%{arch}' */ | |
110 | s2 = (char *) memrchr (debuginfo, '-', s2 - debuginfo); | |
111 | } | |
112 | if (!s2) | |
113 | { | |
114 | cerr << "Error querying the rpm file `" << filename | |
115 | << "': " << debuginfo << endl; | |
116 | xfree (debuginfo); | |
117 | continue; | |
118 | } | |
119 | /* s = `.src.rpm-debuginfo.%{arch}' */ | |
120 | /* s2 = `-%{version}-%{release}.src.rpm-debuginfo.%{arch}' */ | |
121 | memmove (s2 + debuginfolen, s2, s - s2); | |
122 | memcpy (s2, "-debuginfo", debuginfolen); | |
123 | /* s = `XXXX.%{arch}' */ | |
124 | /* strlen ("XXXX") == srcrpmlen + debuginfolen */ | |
125 | /* s2 = `-debuginfo-%{version}-%{release}XX.%{arch}' */ | |
126 | /* strlen ("XX") == srcrpmlen */ | |
127 | memmove (s + debuginfolen, s + srcrpmlen + debuginfolen, | |
128 | strlen (s + srcrpmlen + debuginfolen) + 1); | |
129 | /* s = `-debuginfo-%{version}-%{release}.%{arch}' */ | |
130 | ||
131 | /* RPMDBI_PACKAGES requires keylen == sizeof (int). */ | |
132 | /* RPMDBI_LABEL is an interface for NVR-based dbiFindByLabel(). */ | |
133 | mi_debuginfo = rpmtsInitIterator(ts, (rpmTag) RPMDBI_LABEL, | |
134 | debuginfo, 0); | |
135 | xfree (debuginfo); | |
136 | if (mi_debuginfo) | |
137 | { | |
138 | rpmdbFreeIterator(mi_debuginfo); | |
139 | count = 0; | |
140 | break; | |
141 | } | |
142 | ||
143 | /* The allocated memory gets utilized below for MISSING_RPM_HASH. */ | |
144 | debuginfo = headerSprintf(h, | |
145 | "%{name}-%{version}-%{release}.%{arch}", | |
146 | rpmTagTable, rpmHeaderFormats, &err); | |
147 | if (!debuginfo) | |
148 | { | |
149 | cerr << "Error querying the rpm file `" << filename | |
150 | << "': " << err << endl; | |
151 | continue; | |
152 | } | |
153 | ||
154 | /* Base package name for `debuginfo-install'. We do not use the | |
155 | `yum' command directly as the line | |
156 | yum --enablerepo='*-debuginfo' install NAME-debuginfo.ARCH | |
157 | would be more complicated than just: | |
158 | debuginfo-install NAME-VERSION-RELEASE.ARCH | |
159 | Do not supply the rpm base name (derived from .src.rpm name) as | |
160 | debuginfo-install is unable to install the debuginfo package if | |
161 | the base name PKG binary rpm is not installed while for example | |
162 | PKG-libs would be installed (RH Bug 467901). | |
163 | FUTURE: After multiple debuginfo versions simultaneously installed | |
164 | get supported the support for the VERSION-RELEASE tags handling | |
165 | may need an update. */ | |
166 | ||
167 | sess.rpms_to_install.insert(debuginfo); | |
168 | count++; | |
169 | } | |
170 | ||
171 | rpmdbFreeIterator(mi); | |
172 | } | |
173 | ||
174 | rpmtsFree(ts); | |
175 | ||
176 | return count; | |
177 | } | |
178 | ||
179 | #endif /* HAVE_LIBRPM */ | |
180 | ||
181 | void | |
182 | missing_rpm_list_print (systemtap_session &sess) | |
183 | { | |
184 | #ifdef HAVE_LIBRPM | |
185 | if (sess.rpms_to_install.size() > 0) { | |
186 | cerr << "Missing separate debuginfos, use: debuginfo-install "; | |
187 | for (set<std::string>::iterator it=sess.rpms_to_install.begin(); | |
188 | it !=sess.rpms_to_install.end(); it++) | |
189 | cerr << *it << " "; | |
190 | cerr << endl; | |
191 | } | |
192 | #endif | |
193 | } | |
194 | ||
195 | int | |
196 | find_debug_rpms (systemtap_session &sess, const char * filename) | |
197 | { | |
198 | #ifdef HAVE_LIBRPM | |
199 | return missing_rpm_enlist (sess, filename); | |
200 | #else | |
201 | return 0; | |
202 | #endif | |
203 | } |