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

[Dmitry Kozlyuk]

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.kozl...@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