From: Martin Wilck <mwi...@suse.com>
Some targets (notably the qemu-pr-helper) don't support PERSISTENT
RESERVE IN commands with more than 8192 bytes allocation length.
While I have found no explicit requirement in the SCSI specs that
the allocation lengh may not exceed 8k, an 8k limit is also enforced
by sg_persist(8), and actually by mpathpersist itself for the
--allocation-length option, but not for the auto-determined length.
Fix that.
Reviewed-by: Benjamin Marzinski <bmarz...@redhat.com>
Signed-off-by: Martin Wilck <mwi...@suse.com>
---
libmpathpersist/mpath_pr_ioctl.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/libmpathpersist/mpath_pr_ioctl.c b/libmpathpersist/mpath_pr_ioctl.c
index 74b26b0c..1a28cba7 100644
--- a/libmpathpersist/mpath_pr_ioctl.c
+++ b/libmpathpersist/mpath_pr_ioctl.c
@@ -543,5 +543,7 @@ int get_prin_length(int rq_servact)
mx_resp_len = 0;
break;
}
+ if (mx_resp_len > MPATH_MAX_PARAM_LEN)
+ mx_resp_len = MPATH_MAX_PARAM_LEN;
return mx_resp_len;
}
--
2.25.1
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