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From: Masahiro Yamada <masahiroy@kernel.org>
To: Jialu Xu <xujialu@vimux.org>
Cc: justinstitt@google.com, linux-kbuild@vger.kernel.org,
	 linux-kernel@vger.kernel.org, llvm@lists.linux.dev,
	morbo@google.com,  nathan@kernel.org, ndesaulniers@google.com
Subject: Re: [PATCH v5] gen_compile_commands.py: fix path resolve with symlinks in it
Date: Tue, 12 Dec 2023 02:53:32 +0900	[thread overview]
Message-ID: <CAK7LNAS=rnVqJYfoo-t7EhC8G4E20r1B-xQCKF9W2zgyigi-2w@mail.gmail.com> (raw)
In-Reply-To: <20231210070533.925534-2-xujialu@vimux.org>

On Sun, Dec 10, 2023 at 4:06 PM Jialu Xu <xujialu@vimux.org> wrote:
>
> When a path contains relative symbolic links, os.path.abspath() might
> not follow the symlinks and instead return the absolute path with just
> the relative paths resolved, resulting in an incorrect path.
>
> 1. Say "drivers/hdf/" has some symlinks:
>
>     # ls -l drivers/hdf/
>     total 364
>     drwxrwxr-x 2 ...   4096 ... evdev
>     lrwxrwxrwx 1 ...     44 ... framework -> ../../../../../../drivers/hdf_core/framework
>     -rw-rw-r-- 1 ... 359010 ... hdf_macro_test.h
>     lrwxrwxrwx 1 ...     55 ... inner_api -> ../../../../../../drivers/hdf_core/interfaces/inner_api
>     lrwxrwxrwx 1 ...     53 ... khdf -> ../../../../../../drivers/hdf_core/adapter/khdf/linux
>     -rw-r--r-- 1 ...     74 ... Makefile
>     drwxrwxr-x 3 ...   4096 ... wifi
>
> 2. One .cmd file records that:
>
>     # head -1 ./framework/core/manager/src/.devmgr_service.o.cmd
>     cmd_drivers/hdf/khdf/manager/../../../../framework/core/manager/src/devmgr_service.o := ... \
>     /path/to/src/drivers/hdf/khdf/manager/../../../../framework/core/manager/src/devmgr_service.c
>
> 3. os.path.abspath returns "/path/to/src/framework/core/manager/src/devmgr_service.c", not correct:
>
>     # ./scripts/clang-tools/gen_compile_commands.py
>     INFO: Could not add line from ./framework/core/manager/src/.devmgr_service.o.cmd: File \
>         /path/to/src/framework/core/manager/src/devmgr_service.c not found
>
> Use os.path.realpath(), which resolves the symlinks and normalizes the paths correctly.
>
>     # cat compile_commands.json
>     ...
>     {
>       "command": ...
>       "directory": ...
>       "file": "/path/to/bla/drivers/hdf_core/framework/core/manager/src/devmgr_service.c"
>     },
>     ...
>
> Also fix it in parse_arguments().
>
> Signed-off-by: Jialu Xu <xujialu@vimux.org>



Applied to linux-kbuild. Thanks.




-- 
Best Regards
Masahiro Yamada

      reply	other threads:[~2023-12-11 17:54 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-12-04 10:41 [PATCH] gen_compile_commands.py: fix path resolve with symlinks in it Jialu Xu
2023-12-04 16:59 ` Nathan Chancellor
2023-12-05  2:15   ` Jialu Xu
2023-12-05  2:15   ` [PATCH v2] gen_compile_commands.py: fix path resolve with symlinks in it Jialu Xu
2023-12-05 16:56     ` Nathan Chancellor
2023-12-06  1:20       ` Jialu Xu
2023-12-06  1:20       ` [PATCH v3] " Jialu Xu
2023-12-06  1:24       ` [PATCH v4] " Jialu Xu
2023-12-07 22:54         ` Justin Stitt
2023-12-10  5:52         ` Masahiro Yamada
2023-12-10  7:05           ` Jialu Xu
2023-12-10  7:05             ` [PATCH v5] " Jialu Xu
2023-12-11 17:53               ` Masahiro Yamada [this message]

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