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init/main.c: add warning when file specified in rdinit is inaccessible

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Avoid silently ignoring the initramfs when the file specified in rdinit is
not usable.  This prints an error that clearly explains the issue (file
was not found, vs initramfs was not found).

Link: https://lkml.kernel.org/r/20250707091411.1412681-1-lillian@star-ark.net
Signed-off-by: Lillian Berry <lillian@star-ark.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Lillian Berry 2025-07-07 09:14:11 +00:00 • committed by Andrew Morton
parent 4efec6c091
commit 98aa4d5d24
1 changed files with 5 additions and 1 deletions
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6
init/main.c
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@ -1592,7 +1592,11 @@ static noinline void __init kernel_init_freeable(void)
* check if there is an early userspace init. If yes, let it do all
* the work
*/
if (init_eaccess(ramdisk_execute_command) != 0) {
int ramdisk_command_access;
ramdisk_command_access = init_eaccess(ramdisk_execute_command);
if (ramdisk_command_access != 0) {
pr_warn("check access for rdinit=%s failed: %i, ignoring\n",
ramdisk_execute_command, ramdisk_command_access);
ramdisk_execute_command = NULL;
prepare_namespace();
}