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ipl_tools/lsreipl: Suppress 'clear' output if not supported

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Some environments do not expose the /sys/firmware/reipl/*/clear attribute
(e.g. z/VM guests without "Load Normal" support). lsreipl currently tries to
read the attribute unconditionally for ECKD re-IPL and emits a confusing
"Could not read file .../clear" error when it is missing.

Re-IPL type: eckd
Device:      0.0.6d74
bootprog:    0
br_chr:      auto
Bootparm:    ""
Loadparm:    ""
Could not read file /sys/firmware/reipl/eckd/clear: No such file or directory
clear:       (null)
Secure boot: 0

Only print the "clear" field when the corresponding sysfs attribute is
present, avoiding the spurious error output.

Fixes: 7c24855ba1 ("ipl_tools: add support for list-directed IPL from ECKD DASD")
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Vasily Gorbik
2026-02-09 00:35:29 +01:00
committed by Jan Höppner
parent 3358a30dae
commit 5dc39e87e7
1 changed files with 2 additions and 1 deletions
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3
ipl_tools/cmd_lsreipl.c
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@@ -157,6 +157,7 @@ void print_eckd(int show_ipl, const char *name)
{
char *dir = show_ipl ? "ipl" : "reipl/eckd";
char *path_loadparm = util_path_sysfs("firmware/%s/loadparm", dir);
char *path_reipl_clear = util_path_sysfs("firmware/reipl/eckd/clear");
char *path_secure_boot = util_path_sysfs("firmware/ipl/secure");
char *loadparm;
@@ -172,7 +173,7 @@ void print_eckd(int show_ipl, const char *name)
printf("Loadparm: \"%s\"\n", loadparm);
free(loadparm);
}
if (!show_ipl)
if (!show_ipl && access(path_reipl_clear, R_OK) == 0)
print_fw_str("clear: %s\n", dir, "clear");
if (access(path_secure_boot, R_OK) == 0)
print_fw_str("Secure boot: %s\n", "ipl", "secure");