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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Benjamin Marzinski <bmarzins@redhat.com>
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Date: Wed, 13 Apr 2022 23:27:35 -0500
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Subject: [PATCH] libmultipath: steal the src string pointer in merge_str()
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Instead of allocating a copy when the original string is going to be
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freed right after the merge, just steal the pointer. Also, merge_mpe()
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can't get called with NULL arguments.
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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Reviewed-by: Martin Wilck <mwilck@suse.com>
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---
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libmultipath/config.c | 16 +++++-----------
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1 file changed, 5 insertions(+), 11 deletions(-)
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diff --git a/libmultipath/config.c b/libmultipath/config.c
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index abbddaf1..aa79561e 100644
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--- a/libmultipath/config.c
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+++ b/libmultipath/config.c
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@@ -323,9 +323,9 @@ set_param_str(const char * str)
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}
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#define merge_str(s) \
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- if (!dst->s && src->s) { \
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- if (!(dst->s = set_param_str(src->s))) \
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- return 1; \
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+ if (!dst->s && src->s && strlen(src->s)) { \
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+ dst->s = src->s; \
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+ src->s = NULL; \
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}
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#define merge_num(s) \
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@@ -333,7 +333,7 @@ set_param_str(const char * str)
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dst->s = src->s
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-static int
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+static void
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merge_hwe (struct hwentry * dst, struct hwentry * src)
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{
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char id[SCSI_VENDOR_SIZE+PATH_PRODUCT_SIZE];
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@@ -385,15 +385,11 @@ merge_hwe (struct hwentry * dst, struct hwentry * src)
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reconcile_features_with_options(id, &dst->features,
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&dst->no_path_retry,
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&dst->retain_hwhandler);
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- return 0;
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}
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-static int
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+static void
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merge_mpe(struct mpentry *dst, struct mpentry *src)
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{
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- if (!dst || !src)
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- return 1;
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-
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merge_str(alias);
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merge_str(uid_attribute);
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merge_str(getuid);
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@@ -435,8 +431,6 @@ merge_mpe(struct mpentry *dst, struct mpentry *src)
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merge_num(uid);
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merge_num(gid);
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merge_num(mode);
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-
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- return 0;
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}
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void merge_mptable(vector mptable)
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