fs/proc: Skip bootloader comment if no embedded kernel parameters
commit c722cea208
upstream.
If the "bootconfig" kernel command-line argument was specified or if
the kernel was built with CONFIG_BOOT_CONFIG_FORCE, but if there are
no embedded kernel parameter, omit the "# Parameters from bootloader:"
comment from the /proc/bootconfig file. This will cause automation
to fall back to the /proc/cmdline file, which will be identical to the
comment in this no-embedded-kernel-parameters case.
Link: https://lore.kernel.org/all/20240409044358.1156477-2-paulmck@kernel.org/
Fixes: 8b8ce6c75430 ("fs/proc: remove redundant comments from /proc/bootconfig")
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: stable@vger.kernel.org
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
0f33fd80e8
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@ -63,7 +63,7 @@ static int __init copy_xbc_key_value_list(char *dst, size_t size)
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dst += ret;
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dst += ret;
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}
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}
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}
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}
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if (ret >= 0 && boot_command_line[0]) {
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if (cmdline_has_extra_options() && ret >= 0 && boot_command_line[0]) {
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ret = snprintf(dst, rest(dst, end), "# Parameters from bootloader:\n# %s\n",
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ret = snprintf(dst, rest(dst, end), "# Parameters from bootloader:\n# %s\n",
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boot_command_line);
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boot_command_line);
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if (ret > 0)
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if (ret > 0)
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@ -10,6 +10,7 @@
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#ifdef __KERNEL__
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#ifdef __KERNEL__
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/types.h>
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bool __init cmdline_has_extra_options(void);
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#else /* !__KERNEL__ */
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#else /* !__KERNEL__ */
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/*
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/*
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* NOTE: This is only for tools/bootconfig, because tools/bootconfig will
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* NOTE: This is only for tools/bootconfig, because tools/bootconfig will
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@ -485,6 +485,11 @@ static int __init warn_bootconfig(char *str)
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early_param("bootconfig", warn_bootconfig);
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early_param("bootconfig", warn_bootconfig);
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bool __init cmdline_has_extra_options(void)
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{
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return extra_command_line || extra_init_args;
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}
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/* Change NUL term back to "=", to make "param" the whole string. */
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/* Change NUL term back to "=", to make "param" the whole string. */
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static void __init repair_env_string(char *param, char *val)
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static void __init repair_env_string(char *param, char *val)
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{
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{
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