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Blame SOURCES/0104-swapon-fix-discard-option-parsing.patch

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From 294a277fceb5cd6640a9b7a6e8af7b2567150f34 Mon Sep 17 00:00:00 2001
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From: Karel Zak <kzak@redhat.com>
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Date: Mon, 20 Mar 2017 12:03:40 +0100
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Subject: [PATCH 104/116] swapon: fix discard option parsing
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Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=1378100
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Upstream: https://github.com/karelzak/util-linux/commit/07332bfa1ec122a251194a62f91319841121d5aa
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Signed-off-by: Karel Zak <kzak@redhat.com>
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---
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 sys-utils/swapon.c | 7 ++++---
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 1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/sys-utils/swapon.c b/sys-utils/swapon.c
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index d85b910..d4f2c08 100644
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--- a/sys-utils/swapon.c
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+++ b/sys-utils/swapon.c
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@@ -632,20 +632,21 @@ static int swapon_all(void)
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 	while (mnt_table_find_next_fs(tb, itr, match_swap, NULL, &fs) == 0) {
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 		/* defaults */
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+		size_t argsz = 0;
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 		int pri = priority, dsc = discard, nofail = ifexists;
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 		char *p, *src, *dscarg;
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 		if (mnt_fs_get_option(fs, "noauto", NULL, NULL) == 0)
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 			continue;
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-		if (mnt_fs_get_option(fs, "discard", &dscarg, NULL) == 0) {
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+		if (mnt_fs_get_option(fs, "discard", &dscarg, &argsz) == 0) {
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 			dsc |= SWAP_FLAG_DISCARD;
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 			if (dscarg) {
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 				/* only single-time discards are wanted */
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-				if (strcmp(dscarg, "once") == 0)
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+				if (strncmp(dscarg, "once", argsz) == 0)
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 					dsc |= SWAP_FLAG_DISCARD_ONCE;
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 				/* do discard for every released swap page */
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-				if (strcmp(dscarg, "pages") == 0)
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+				if (strncmp(dscarg, "pages", argsz) == 0)
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 					dsc |= SWAP_FLAG_DISCARD_PAGES;
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 			}
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 		}
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-- 
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2.9.3
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