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// systemtap debuginfo rpm finder
// Copyright (C) 2009 Red Hat Inc.
//
// This file is part of systemtap, and is free software. You can
// redistribute it and/or modify it under the terms of the GNU General
// Public License (GPL); either version 2, or (at your option) any
// later version.
#include "config.h"
#include "session.h"
#include "rpm_finder.h"
#include <iostream>
#include <fstream>
#include <sstream>
#include <cerrno>
#include <cstdlib>
using namespace std;
#ifdef HAVE_LIBRPM
extern "C" {
#define _RPM_4_4_COMPAT
#include <string.h>
#include <rpm/rpmlib.h>
#include <rpm/rpmts.h>
#include <rpm/rpmdb.h>
#include <rpm/header.h>
#ifndef xfree
#define xfree free
#endif
}
/* Returns the count of newly added rpms. */
/* based on the code in F11 gdb-6.8.50.20090302 source rpm */
static int
missing_rpm_enlist (systemtap_session& sess, const char *filename)
{
static int rpm_init_done = 0;
rpmts ts;
rpmdbMatchIterator mi;
int count = 0;
if (filename == NULL)
return 0;
if (!rpm_init_done)
{
static int init_tried;
/* Already failed the initialization before? */
if (init_tried)
return 0;
init_tried = 1;
if (rpmReadConfigFiles(NULL, NULL) != 0)
{
cerr << "Error reading the rpm configuration files" << endl;
return 0;
}
rpm_init_done = 1;
}
ts = rpmtsCreate();
mi = rpmtsInitIterator(ts, RPMTAG_BASENAMES, filename, 0);
if (mi != NULL)
{
for (;;)
{
Header h;
char *debuginfo, *s, *s2;
errmsg_t err;
size_t srcrpmlen = sizeof (".src.rpm") - 1;
size_t debuginfolen = sizeof ("-debuginfo") - 1;
rpmdbMatchIterator mi_debuginfo;
h = rpmdbNextIterator(mi);
if (h == NULL)
break;
/* Verify the debuginfo file is not already installed. */
debuginfo = headerSprintf(h, "%{sourcerpm}-debuginfo.%{arch}",
rpmTagTable, rpmHeaderFormats, &err);
if (!debuginfo)
{
cerr << "Error querying the rpm file `" << filename << "': "
<< err << endl;
continue;
}
/* s = `.src.rpm-debuginfo.%{arch}' */
s = strrchr (debuginfo, '-') - srcrpmlen;
s2 = NULL;
if (s > debuginfo && memcmp (s, ".src.rpm", srcrpmlen) == 0)
{
/* s2 = `-%{release}.src.rpm-debuginfo.%{arch}' */
s2 = (char *) memrchr (debuginfo, '-', s - debuginfo);
}
if (s2)
{
/* s2 = `-%{version}-%{release}.src.rpm-debuginfo.%{arch}' */
s2 = (char *) memrchr (debuginfo, '-', s2 - debuginfo);
}
if (!s2)
{
cerr << "Error querying the rpm file `" << filename
<< "': " << debuginfo << endl;
xfree (debuginfo);
continue;
}
/* s = `.src.rpm-debuginfo.%{arch}' */
/* s2 = `-%{version}-%{release}.src.rpm-debuginfo.%{arch}' */
memmove (s2 + debuginfolen, s2, s - s2);
memcpy (s2, "-debuginfo", debuginfolen);
/* s = `XXXX.%{arch}' */
/* strlen ("XXXX") == srcrpmlen + debuginfolen */
/* s2 = `-debuginfo-%{version}-%{release}XX.%{arch}' */
/* strlen ("XX") == srcrpmlen */
memmove (s + debuginfolen, s + srcrpmlen + debuginfolen,
strlen (s + srcrpmlen + debuginfolen) + 1);
/* s = `-debuginfo-%{version}-%{release}.%{arch}' */
/* RPMDBI_PACKAGES requires keylen == sizeof (int). */
/* RPMDBI_LABEL is an interface for NVR-based dbiFindByLabel(). */
mi_debuginfo = rpmtsInitIterator(ts, (rpmTag) RPMDBI_LABEL,
debuginfo, 0);
xfree (debuginfo);
if (mi_debuginfo)
{
rpmdbFreeIterator(mi_debuginfo);
count = 0;
break;
}
/* The allocated memory gets utilized below for MISSING_RPM_HASH. */
debuginfo = headerSprintf(h,
"%{name}-%{version}-%{release}.%{arch}",
rpmTagTable, rpmHeaderFormats, &err);
if (!debuginfo)
{
cerr << "Error querying the rpm file `" << filename
<< "': " << err << endl;
continue;
}
/* Base package name for `debuginfo-install'. We do not use the
`yum' command directly as the line
yum --enablerepo='*-debuginfo' install NAME-debuginfo.ARCH
would be more complicated than just:
debuginfo-install NAME-VERSION-RELEASE.ARCH
Do not supply the rpm base name (derived from .src.rpm name) as
debuginfo-install is unable to install the debuginfo package if
the base name PKG binary rpm is not installed while for example
PKG-libs would be installed (RH Bug 467901).
FUTURE: After multiple debuginfo versions simultaneously installed
get supported the support for the VERSION-RELEASE tags handling
may need an update. */
sess.rpms_to_install.insert(debuginfo);
count++;
}
rpmdbFreeIterator(mi);
}
rpmtsFree(ts);
return count;
}
#endif /* HAVE_LIBRPM */
void
missing_rpm_list_print (systemtap_session &sess)
{
#ifdef HAVE_LIBRPM
if (sess.rpms_to_install.size() > 0) {
cerr << "Missing separate debuginfos, use: debuginfo-install ";
for (set<std::string>::iterator it=sess.rpms_to_install.begin();
it !=sess.rpms_to_install.end(); it++)
cerr << *it << " ";
cerr << endl;
}
#endif
}
int
find_debug_rpms (systemtap_session &sess, const char * filename)
{
#ifdef HAVE_LIBRPM
return missing_rpm_enlist (sess, filename);
#else
return 0;
#endif
}
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