File util-linux-lscpu-read_hypervisor_powerpc.patch of Package util-linux

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File util-linux-lscpu-read_hypervisor_powerpc.patch of Package util-linux

From e03b613e8d65d8e705ce5850ed05b3a156097e75 Mon Sep 17 00:00:00 2001
From: Karel Zak <kzak@redhat.com>
Date: Tue, 1 Sep 2015 12:37:18 +0200
Subject: [PATCH] lscpu: fix read_hypervisor_powerpc() logic

We care about /proc/device-tree/compatible content...

The patch also removes unnecessary path_exist(), it seems good enough
to call open() rather than access() + open().

Addresses: https://github.com/karelzak/util-linux/issues/218
Signed-off-by: Karel Zak <kzak@redhat.com>
---
 sys-utils/lscpu.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/sys-utils/lscpu.c b/sys-utils/lscpu.c
index 1f8f5f1..47f690d 100644
--- a/sys-utils/lscpu.c
+++ b/sys-utils/lscpu.c
@@ -603,9 +603,8 @@ read_hypervisor_cpuid(struct lscpu_desc *desc __attribute__((__unused__)))
 
 static int is_compatible(const char *path, const char *str)
 {
-	FILE *fd;
+	FILE *fd = path_fopen("r", 0, "%s", path);
 
-	fd = path_fopen("r", 0, "%s", path);
 	if (fd) {
 		char buf[256];
 		size_t i, len;
@@ -636,11 +635,9 @@ read_hypervisor_powerpc(struct lscpu_desc *desc)
 		desc->virtype = VIRT_PARA;
 
 	/* PowerNV (POWER Non-Virtualized, bare-metal) */
-	} else if (path_exist(_PATH_PROC_DEVICETREE "/compatible")) {
-		if (is_compatible(_PATH_PROC_DEVICETREE "/compatible", "ibm,powernv")) {
-			desc->hyper = HYPER_NONE;
-			desc->virtype = VIRT_NONE;
-		}
+	} else if (is_compatible(_PATH_PROC_DEVICETREE "/compatible", "ibm,powernv")) {
+		desc->hyper = HYPER_NONE;
+		desc->virtype = VIRT_NONE;
 
 	/* PowerVM (IBM's proprietary hypervisor, aka pHyp) */
 	} else if (path_exist(_PATH_PROC_DEVICETREE "/ibm,partition-name")
@@ -658,11 +655,9 @@ read_hypervisor_powerpc(struct lscpu_desc *desc)
 		}
 
 	/* Qemu */
-	} else if (path_exist(_PATH_PROC_DEVICETREE "/compatible")) {
-		if (is_compatible(_PATH_PROC_DEVICETREE "/compatible", "qemu,pseries")) {
-			desc->hyper = HYPER_KVM;
-			desc->virtype = VIRT_PARA;
-		}
+	} else if (is_compatible(_PATH_PROC_DEVICETREE "/compatible", "qemu,pseries")) {
+		desc->hyper = HYPER_KVM;
+		desc->virtype = VIRT_PARA;
 	}
 	return desc->hyper;
 }
-- 
2.8.1

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File util-linux-lscpu-read_hypervisor_powerpc.patch of Package util-linux

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