mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-25 07:05:13 +00:00
102 lines
3.7 KiB
Diff
102 lines
3.7 KiB
Diff
From de122af5382d8017cae63bdee946206c6c6c23ab Mon Sep 17 00:00:00 2001
|
||
From: Jan Tojnar <jtojnar@gmail.com>
|
||
Date: Sat, 24 Dec 2022 20:19:27 +0100
|
||
Subject: [PATCH 3/4] libbacktrace: Support multiple build id directories
|
||
MIME-Version: 1.0
|
||
Content-Type: text/plain; charset=UTF-8
|
||
Content-Transfer-Encoding: 8bit
|
||
|
||
gdb supports multiple debug directories separated by colons:
|
||
https://github.com/bminor/binutils-gdb/blob/fcbfb25dcca625a7f999ec51d48b6fc3a32123c3/gdb/build-id.c#L136-L142
|
||
|
||
This is useful for example when using dwarffs in addition
|
||
to debug data installed using distribution’s package manager.
|
||
---
|
||
elf.c | 57 ++++++++++++++++++++++++++++++++++++---------------------
|
||
1 file changed, 36 insertions(+), 21 deletions(-)
|
||
|
||
diff --git a/elf.c b/elf.c
|
||
index 8b1189c..65c647a 100644
|
||
--- a/elf.c
|
||
+++ b/elf.c
|
||
@@ -865,12 +865,12 @@ elf_readlink (struct backtrace_state *state, const char *filename,
|
||
when the build ID is known is in /usr/lib/debug/.build-id. */
|
||
|
||
static int
|
||
-elf_open_debugfile_by_buildid (struct backtrace_state *state,
|
||
+elf_open_debugfile_by_buildid (const char * const prefix,
|
||
+ struct backtrace_state *state,
|
||
const char *buildid_data, size_t buildid_size,
|
||
backtrace_error_callback error_callback,
|
||
void *data)
|
||
{
|
||
- const char * const prefix = SYSTEM_DEBUG_DIR BUILD_ID_DIR;
|
||
const size_t prefix_len = strlen (prefix);
|
||
const char * const suffix = ".debug";
|
||
const size_t suffix_len = strlen (suffix);
|
||
@@ -6936,27 +6936,42 @@ elf_add (struct backtrace_state *state, const char *filename, int descriptor,
|
||
if (buildid_data != NULL)
|
||
{
|
||
int d;
|
||
+ char debug_directories[strlen(SYSTEM_DEBUG_DIR) + 1];
|
||
+ char *debug_dir;
|
||
|
||
- d = elf_open_debugfile_by_buildid (state, buildid_data, buildid_size,
|
||
- error_callback, data);
|
||
- if (d >= 0)
|
||
- {
|
||
- int ret;
|
||
+ strcpy(debug_directories, SYSTEM_DEBUG_DIR);
|
||
|
||
- elf_release_view (state, &buildid_view, error_callback, data);
|
||
- if (debuglink_view_valid)
|
||
- elf_release_view (state, &debuglink_view, error_callback, data);
|
||
- if (debugaltlink_view_valid)
|
||
- elf_release_view (state, &debugaltlink_view, error_callback, data);
|
||
- ret = elf_add (state, "", d, NULL, 0, base_address, error_callback,
|
||
- data, fileline_fn, found_sym, found_dwarf, NULL, 0,
|
||
- 1, NULL, 0);
|
||
- if (ret < 0)
|
||
- backtrace_close (d, error_callback, data);
|
||
- else if (descriptor >= 0)
|
||
- backtrace_close (descriptor, error_callback, data);
|
||
- return ret;
|
||
- }
|
||
+ debug_dir = strtok (debug_directories, ":");
|
||
+ while (debug_dir != NULL)
|
||
+ {
|
||
+ char prefix[strlen(debug_dir) + strlen(BUILD_ID_DIR) + 1];
|
||
+ strcpy(prefix, debug_dir);
|
||
+ strcat(prefix, BUILD_ID_DIR);
|
||
+
|
||
+ d = elf_open_debugfile_by_buildid (prefix, state, buildid_data, buildid_size,
|
||
+ error_callback, data);
|
||
+
|
||
+ if (d >= 0)
|
||
+ {
|
||
+ int ret;
|
||
+
|
||
+ elf_release_view (state, &buildid_view, error_callback, data);
|
||
+ if (debuglink_view_valid)
|
||
+ elf_release_view (state, &debuglink_view, error_callback, data);
|
||
+ if (debugaltlink_view_valid)
|
||
+ elf_release_view (state, &debugaltlink_view, error_callback, data);
|
||
+ ret = elf_add (state, "", d, NULL, 0, base_address, error_callback,
|
||
+ data, fileline_fn, found_sym, found_dwarf, NULL, 0,
|
||
+ 1, NULL, 0);
|
||
+ if (ret < 0)
|
||
+ backtrace_close (d, error_callback, data);
|
||
+ else if (descriptor >= 0)
|
||
+ backtrace_close (descriptor, error_callback, data);
|
||
+ return ret;
|
||
+ }
|
||
+
|
||
+ debug_dir = strtok (NULL, ":");
|
||
+ }
|
||
}
|
||
|
||
if (buildid_view_valid)
|
||
--
|
||
2.38.1
|
||
|