kernel/linux.git/tools/bootconfig, branch v7.0-rc7

tools/bootconfig: fix fd leak in load_xbc_file() on fstat failure

2026-03-18T23:43:06+00:00

If fstat() fails after open() succeeds, the function returns without closing the file descriptor. Also preserve errno across close(), since close() may overwrite it before the error is returned. Link: https://lore.kernel.org/all/20260318155847.78065-3-objecting@objecting.org/ Fixes: 950313ebf79c ("tools: bootconfig: Add bootconfig command") Signed-off-by: Josh Law Signed-off-by: Masami Hiramatsu (Google)

bootconfig: Add bootconfig tests about braces

2026-03-13T08:49:30+00:00

Add more bootconfig tests for checking the error message of non closing brace and max number of nested braces. Link: https://lore.kernel.org/all/177337553551.416919.11217619471547711262.stgit@devnote2/ Signed-off-by: Masami Hiramatsu (Google)

bootconfig: Check the parsed output of the good examples

2026-02-05T13:21:23+00:00

Check whether the parsed output of the good example configs are the same as expected. Link: https://lore.kernel.org/all/177025239529.14982.12913754615993262263.stgit@devnote2/ Signed-off-by: Masami Hiramatsu (Google) Tested-by: Steven Rostedt (Google)

bootconfig: Terminate value search if it hits a newline

2026-02-05T13:21:07+00:00

Terminate the value search for a key if it hits a newline and make the value empty. When we pass a bootconfig with an empty value terminated by the newline, like below:: foo = bar = value Current bootconfig interprets it as a single entry:: foo = "bar = value"; The Documentation/admin-guide/bootconfig.rst defines the value itself is terminated by newline: The value has to be terminated by semi-colon (``;``) or newline (``\n``). but it does not define when the value search is terminated. This changes the behavior to be more line-oriented, so that it is clearer in how it works. - The value search of key-value pair will be terminated by a comment or newline. - The value search of an array will continue beyond comments and newlines. Thus, with this update, the above example is interpreted as:: foo = ""; bar = "value"; And the below example will cause a syntax error because "bar" is expected as a key but it has ','. foo = bar, buz According to this change, one wrong example config is updated. Link: https://lore.kernel.org/all/177025238503.14982.17059549076175612447.stgit@devnote2/ Signed-off-by: Masami Hiramatsu (Google) Reviewed-by: Julius Werner

bootconfig: Fix negative seeks on 32-bit with LFS enabled

2025-08-20T23:16:31+00:00

Commit 26dda5769509 "tools/bootconfig: Cleanup bootconfig footer size calculations" replaced some expressions of type int with the BOOTCONFIG_FOOTER_SIZE macro, which expands to an expression of type size_t, which is unsigned. On 32-bit architectures with LFS enabled (i.e. off_t is 64-bit), the seek offset of -BOOTCONFIG_FOOTER_SIZE now turns into a positive value. Fix this by casting the size to off_t before negating it. Just in case someone changes BOOTCONFIG_MAGIC_LEN to have type size_t later, do the same thing to the seek offset of -BOOTCONFIG_MAGIC_LEN. Link: https://lore.kernel.org/all/aKHlevxeg6Y7UQrz@decadent.org.uk/ Fixes: 26dda5769509 ("tools/bootconfig: Cleanup bootconfig footer size calculations") Signed-off-by: Ben Hutchings Signed-off-by: Masami Hiramatsu (Google)

bootconfig: Fix unaligned access when building footer

2025-07-24T13:16:48+00:00

Currently we add padding between the bootconfig text and footer to ensure that the footer is aligned within the initramfs image. However, because only the bootconfig data is held in memory, not the full initramfs image, the footer may not be naturally aligned in memory. This can result in an alignment fault (SIGBUS) when writing the footer on some architectures, such as sparc. Build the footer in a struct on the stack before adding it to the buffer. References: https://buildd.debian.org/status/fetch.php?pkg=linux&arch=sparc64&ver=6.16%7Erc7-1%7Eexp1&stamp=1753209801&raw=0 Link: https://lore.kernel.org/all/aIC-NTw-cdm9ZGFw@decadent.org.uk/ Signed-off-by: Ben Hutchings Signed-off-by: Masami Hiramatsu (Google)

tools/bootconfig: scripts/ftrace.sh was missing the shebang line, so added it

2025-07-23T15:23:39+00:00

This file was missing the shebang line, so added it. Link: https://lore.kernel.org/all/20250722225351.8811-1-unixbhaskar@gmail.com/ [Masami: changed title. ] Signed-off-by: Bhaskar Chowdhury Signed-off-by: Masami Hiramatsu (Google)

tools/bootconfig: Cleanup bootconfig footer size calculations

2025-07-14T02:56:11+00:00

There are many same pattern of 8 + BOOTCONFIG_MAGIC_LEN for calculating the size of bootconfig footer. Use BOOTCONFIG_FOOTER_SIZE macro to clean up those magic numbers. Link: https://lore.kernel.org/all/175211425693.2591046.16029516706923643510.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google)

tools/bootconfig: Replace some echo with printf for more portability

2025-07-14T02:55:58+00:00

Since echo is not portable, use printf instead. This fixes a wrong test result formatting in some environment. (showing "\t\t[OK]") Also this uses printf command for generating test data instead of echo. Link: https://lore.kernel.org/all/175211424942.2591046.5439447789303314213.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google)

tools/bootconfig: Improve portability

2025-07-14T02:55:42+00:00

Since 'stat' command and 'truncate' command are GNU extension, use 'wc' and 'dd' commands instead. Link: https://lore.kernel.org/all/175211424184.2591046.3523297993175066026.stgit@mhiramat.tok.corp.google.com/ Signed-off-by: Masami Hiramatsu (Google)