File 0001-debuginfod-add-metadata-query-by-buildid.patch of Package elfutils
From 6856681d2dcbd2ce0ce0624797d8f6ca1d980e16 Mon Sep 17 00:00:00 2001
From: Josef Cejka <jcejka@suse.de>
Date: Thu, 12 Mar 2026 17:48:40 +0100
Subject: [PATCH] debuginfod: add metadata query by buildid
This patch allow to query database for all archives related
to matching buildid. It allows to identify packages and their
versions for executable and libraries involved in a core file.
---
debuginfod/debuginfod-find.c | 2 +-
debuginfod/debuginfod.cxx | 77 +++++++++++++++++++++++++++---------
2 files changed, 60 insertions(+), 19 deletions(-)
diff --git a/debuginfod/debuginfod-find.c b/debuginfod/debuginfod-find.c
index deba9560..db079dea 100644
--- a/debuginfod/debuginfod-find.c
+++ b/debuginfod/debuginfod-find.c
@@ -53,7 +53,7 @@ static const char args_doc[] = N_("debuginfo BUILDID\n"
"source PATH /FILENAME\n"
"section BUILDID SECTION-NAME\n"
"section PATH SECTION-NAME\n"
- "metadata (glob|file|KEY) (GLOB|FILENAME|VALUE)\n"
+ "metadata (glob|file|buildid|KEY) (GLOB|FILENAME|BUILDID|VALUE)\n"
);
/* Definitions of arguments for argp functions. */
diff --git a/debuginfod/debuginfod.cxx b/debuginfod/debuginfod.cxx
index 4bb517bd..a59b8822 100644
--- a/debuginfod/debuginfod.cxx
+++ b/debuginfod/debuginfod.cxx
@@ -3541,25 +3541,9 @@ handle_metrics (off_t* size)
return r;
}
-
-static struct MHD_Response*
-handle_metadata (MHD_Connection* conn,
- string key, string value, off_t* size)
+static sqlite_ps*
+handle_metadata_glob(sqlite3* thisdb, const string& key, const string& value)
{
- MHD_Response* r;
- // Because this query can take on the order of many seconds, we need
- // to prevent DoS against the other normal quick queries, so we use
- // a dedicated database connection.
- sqlite3 *thisdb = 0;
- int rc = sqlite3_open_v2 (db_path.c_str(), &thisdb, (SQLITE_OPEN_READONLY
- |SQLITE_OPEN_URI
- |SQLITE_OPEN_PRIVATECACHE
- |SQLITE_OPEN_NOMUTEX), /* private to us */
- NULL);
- if (rc)
- throw sqlite_exception(rc, "cannot open database for metadata query");
- defer_dtor<sqlite3*,int> sqlite_db_closer (thisdb, sqlite3_close_v2);
-
// Query locally for matching e, d files
string op;
if (key == "glob")
@@ -3633,6 +3617,63 @@ handle_metadata (MHD_Connection* conn,
pp->bind(2, bname);
pp->bind(3, dirname);
pp->bind(4, bname);
+ return pp;
+}
+
+static sqlite_ps*
+handle_metadata_buildid(sqlite3* thisdb, const string& value)
+{
+ string sql = string(
+ "select d1.executable_p, d1.debuginfo_p, 0 as source_p, "
+ " b1.hex, f1d.name || '/' || f1b.name as file, a1.name as archive "
+ "from " BUILDIDS "_r_de d1, " BUILDIDS "_files f1, " BUILDIDS "_fileparts f1b, " BUILDIDS "_fileparts f1d, "
+ BUILDIDS "_buildids b1, " BUILDIDS "_files_v a1 "
+ "where f1.id = d1.content and a1.id = d1.file and d1.buildid = b1.id "
+ " and b1.hex = ? and f1.dirname = f1d.id and f1.basename = f1b.id "
+ "union all \n"
+ "select d2.executable_p, d2.debuginfo_p, 0, "
+ " b2.hex, f2d.name || '/' || f2b.name, NULL "
+ "from " BUILDIDS "_f_de d2, " BUILDIDS "_files f2, " BUILDIDS "_fileparts f2b, " BUILDIDS "_fileparts f2d, "
+ BUILDIDS "_buildids b2 "
+ "where f2.id = d2.file and d2.buildid = b2.id "
+ " and b2.hex = ? "
+ " and f2.dirname = f2d.id and f2.basename = f2b.id");
+
+ sqlite_ps *pp = new sqlite_ps (thisdb, "mhd-query-meta-buildid", sql);
+ pp->reset();
+ pp->bind(1, value); // Bind buildid for the first select (_r_de)
+ pp->bind(2, value); // Bind buildid for the second select (_f_de)
+ return pp;
+}
+
+static struct MHD_Response*
+handle_metadata (MHD_Connection* conn,
+ string key, string value, off_t* size)
+{
+ MHD_Response* r;
+ // Because this query can take on the order of many seconds, we need
+ // to prevent DoS against the other normal quick queries, so we use
+ // a dedicated database connection.
+ sqlite3 *thisdb = 0;
+ int rc = sqlite3_open_v2 (db_path.c_str(), &thisdb, (SQLITE_OPEN_READONLY
+ |SQLITE_OPEN_URI
+ |SQLITE_OPEN_PRIVATECACHE
+ |SQLITE_OPEN_NOMUTEX), /* private to us */
+ NULL);
+ if (rc)
+ throw sqlite_exception(rc, "cannot open database for metadata query");
+ defer_dtor<sqlite3*,int> sqlite_db_closer (thisdb, sqlite3_close_v2);
+
+ sqlite_ps *pp = nullptr;
+
+ if (key == "glob" || key == "file") {
+ pp = handle_metadata_glob(thisdb, key, value);
+ } else if (key == "buildid") {
+ pp = handle_metadata_buildid(thisdb, value);
+ } else {
+ throw reportable_exception("/metadata webapi error, unsupported key");
+ }
+
unique_ptr<sqlite_ps> ps_closer(pp); // release pp if exception or return
pp->reset_timeout(metadata_maxtime_s);
--
2.51.0
