[dpdk-dev] [PATCH] eal/windows: detect insufficient privileges for hugepages

Dmitry Kozlyuk dmitry.kozliuk at gmail.com
Tue Jul 7 22:22:03 CEST 2020


AdjustTokenPrivileges() succeeds even if no requested privileges have
been granted; this behavior is documented. Check last error code in
addition to return value to detect such case.

Signed-off-by: Dmitry Kozlyuk <dmitry.kozliuk at gmail.com>
---
 lib/librte_eal/windows/eal_hugepages.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/librte_eal/windows/eal_hugepages.c b/lib/librte_eal/windows/eal_hugepages.c
index 5779cd325..07a5467d0 100644
--- a/lib/librte_eal/windows/eal_hugepages.c
+++ b/lib/librte_eal/windows/eal_hugepages.c
@@ -41,6 +41,10 @@ hugepage_claim_privilege(void)
 		goto exit;
 	}
 
+	/* AdjustTokenPrivileges() may succeed with ERROR_NOT_ALL_ASSIGNED. */
+	if (GetLastError() != ERROR_SUCCESS)
+		goto exit;
+
 	ret = 0;
 
 exit:
-- 
2.25.4



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