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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: Tue, 3 Nov 2020 14:27:58 -0600
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Subject: [PATCH] libmultipath: factor out code to get vpd page data
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A future patch will reuse the code to get the vpd page data, so factor
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it out from get_vpd_sgio().
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Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
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---
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libmultipath/discovery.c | 19 +++++++++++++++----
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1 file changed, 15 insertions(+), 4 deletions(-)
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diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
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index aa5942c3..eb1e735d 100644
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--- a/libmultipath/discovery.c
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+++ b/libmultipath/discovery.c
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@@ -1239,11 +1239,10 @@ get_vpd_sysfs (struct udev_device *parent, int pg, char * str, int maxlen)
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return len;
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}
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-int
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-get_vpd_sgio (int fd, int pg, int vend_id, char * str, int maxlen)
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+static int
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+fetch_vpd_page(int fd, int pg, unsigned char *buff)
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{
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- int len, buff_len;
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- unsigned char buff[4096];
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+ int buff_len;
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memset(buff, 0x0, 4096);
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if (sgio_get_vpd(buff, 4096, fd, pg) < 0) {
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@@ -1264,6 +1263,18 @@ get_vpd_sgio (int fd, int pg, int vend_id, char * str, int maxlen)
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condlog(3, "vpd pg%02x page truncated", pg);
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buff_len = 4096;
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}
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+ return buff_len;
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+}
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+
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+int
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+get_vpd_sgio (int fd, int pg, int vend_id, char * str, int maxlen)
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+{
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+ int len, buff_len;
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+ unsigned char buff[4096];
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+
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+ buff_len = fetch_vpd_page(fd, pg, buff);
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+ if (buff_len < 0)
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+ return buff_len;
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if (pg == 0x80)
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len = parse_vpd_pg80(buff, str, maxlen);
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else if (pg == 0x83)
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--
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2.17.2
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