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8cc96ee416
open_source_file relies on errno to communicate the reason for a missing source file. open_source_file may also call debuginfod_find_source. It is possible for debuginfod_find_source to set errno to a value unrelated to the reason for a failed download. This can result in bogus error messages being reported as the reason for a missing source file. The following error message should instead be "No such file or directory": Temporary breakpoint 1, 0x00005555556f4de0 in main () (gdb) list Downloading source file /usr/src/debug/glibc-2.36-8.fc37.x86_64/elf/<built-in> 1 /usr/src/debug/glibc-2.36-8.fc37.x86_64/elf/<built-in>: Directory not empty. Fix this by having open_source_file return a negative errno if it fails to open a source file. Use this value to generate the error message instead of errno. Approved-By: Tom Tromey <tom@tromey.com> Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=29999
85 lines
3.6 KiB
C
85 lines
3.6 KiB
C
/* debuginfod utilities for GDB.
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Copyright (C) 2020-2023 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef DEBUGINFOD_SUPPORT_H
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#define DEBUGINFOD_SUPPORT_H
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#include "gdbsupport/scoped_fd.h"
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/* Query debuginfod servers for a source file associated with an
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executable with BUILD_ID. BUILD_ID can be given as a binary blob or
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a null-terminated string. If given as a binary blob, BUILD_ID_LEN
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should be the number of bytes. If given as a null-terminated string,
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BUILD_ID_LEN should be 0.
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SRC_PATH should be the source file's absolute path that includes the
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compilation directory of the CU associated with the source file.
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For example if a CU's compilation directory is `/my/build` and the
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source file path is `/my/source/foo.c`, then SRC_PATH should be
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`/my/build/../source/foo.c`.
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If the file is successfully retrieved, return a file descriptor and store
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the file's local path in DESTNAME. If unsuccessful, print an error message
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and return a negative errno. If GDB is not built with debuginfod, this
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function returns -ENOSYS. */
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extern scoped_fd
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debuginfod_source_query (const unsigned char *build_id,
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int build_id_len,
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const char *src_path,
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gdb::unique_xmalloc_ptr<char> *destname);
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/* Query debuginfod servers for a debug info file with BUILD_ID.
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BUILD_ID can be given as a binary blob or a null-terminated string.
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If given as a binary blob, BUILD_ID_LEN should be the number of bytes.
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If given as a null-terminated string, BUILD_ID_LEN should be 0.
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FILENAME should be the name or path of the main binary associated with
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the separate debug info. It is used for printing messages to the user.
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If the file is successfully retrieved, return a file descriptor and store
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the file's local path in DESTNAME. If unsuccessful, print an error message
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and return a negative errno. If GDB is not built with debuginfod, this
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function returns -ENOSYS. */
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extern scoped_fd
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debuginfod_debuginfo_query (const unsigned char *build_id,
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int build_id_len,
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const char *filename,
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gdb::unique_xmalloc_ptr<char> *destname);
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/* Query debuginfod servers for an executable file with BUILD_ID.
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BUILD_ID can be given as a binary blob or a null-terminated string.
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If given as a binary blob, BUILD_ID_LEN should be the number of bytes.
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If given as a null-terminated string, BUILD_ID_LEN should be 0.
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FILENAME should be the name or path associated with the executable.
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It is used for printing messages to the user.
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If the file is successfully retrieved, return a file descriptor and store
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the file's local path in DESTNAME. If unsuccessful, print an error message
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and return a negative errno. If GDB is not built with debuginfod, this
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function returns -ENOSYS. */
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extern scoped_fd debuginfod_exec_query (const unsigned char *build_id,
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int build_id_len,
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const char *filename,
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gdb::unique_xmalloc_ptr<char>
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*destname);
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#endif /* DEBUGINFOD_SUPPORT_H */
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