diff options
Diffstat (limited to 'gdb/build-id.c')
| -rw-r--r-- | gdb/build-id.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/gdb/build-id.c b/gdb/build-id.c index 32fbe17..6266be1 100644 --- a/gdb/build-id.c +++ b/gdb/build-id.c @@ -26,6 +26,8 @@ #include "filenames.h" #include "gdbcore.h" #include "cli/cli-style.h" +#include "gdbsupport/scoped_fd.h" +#include "debuginfod-support.h" /* See build-id.h. */ @@ -291,9 +293,11 @@ build_id_to_debug_bfd (size_t build_id_len, const bfd_byte *build_id) return build_id_to_bfd_suffix (build_id_len, build_id, ".debug"); } -/* See build-id.h. */ +/* Find and open a BFD for an executable file given a build-id. If no BFD + can be found, return NULL. The returned reference to the BFD must be + released by the caller. */ -gdb_bfd_ref_ptr +static gdb_bfd_ref_ptr build_id_to_exec_bfd (size_t build_id_len, const bfd_byte *build_id) { return build_id_to_bfd_suffix (build_id_len, build_id, ""); @@ -335,3 +339,37 @@ find_separate_debug_file_by_buildid (struct objfile *objfile, return std::string (); } + +/* See build-id.h. */ + +gdb_bfd_ref_ptr +find_objfile_by_build_id (const bfd_build_id *build_id, + const char *expected_filename) +{ + /* Try to find the executable (or shared object) by looking for a + (sym)link on disk from the build-id to the object file. */ + gdb_bfd_ref_ptr abfd = build_id_to_exec_bfd (build_id->size, + build_id->data); + + if (abfd != nullptr) + return abfd; + + /* Attempt to query debuginfod for the executable. */ + gdb::unique_xmalloc_ptr<char> path; + scoped_fd fd = debuginfod_exec_query (build_id->data, build_id->size, + expected_filename, &path); + if (fd.get () >= 0) + { + abfd = gdb_bfd_open (path.get (), gnutarget); + + if (abfd == nullptr) + warning (_("\"%ps\" from debuginfod cannot be opened as bfd: %s"), + styled_string (file_name_style.style (), path.get ()), + gdb_bfd_errmsg (bfd_get_error (), nullptr).c_str ()); + else if (!build_id_verify (abfd.get (), build_id->size, + build_id->data)) + abfd = nullptr; + } + + return abfd; +} |