7:12 a.m.
On linux, uid_t is a 32-bit unsigned integer, so this is the correct
value when you use -2. If you want a specific UID, you need to
configure it in Anonymous_uid (or Anonymous_gid for the GID)
Daniel
On 4/1/19 11:48 PM, 891873395(a)qq.com wrote:
Hi:
I found a question when we use permission "All_squash". We touched a file,
and found that the UID and GID of this file is 4294967294. We did not set anonymous UID
and GID. But the UID of nfsnobody is 65534 not 4294967294. 65535 is the 16-bit complement
of -2 and 4294967294 is the 32-bit complement. So this is a problem of overflow. We shoud
set the defalt value to be 0xFFFE. As the Following:
diff --git a/src/include/nfs_exports.h b/src/include/nfs_exports.h
index abec9d2..d45a939 100644
--- a/src/include/nfs_exports.h
+++ b/src/include/nfs_exports.h
@@ -54,8 +54,8 @@
* Export List structure
*/
#define EXPORT_KEY_SIZE 8
-#define ANON_UID -2
-#define ANON_GID -2
+#define ANON_UID 0xFFFE
+#define ANON_GID 0xFFFE
#define EXPORT_LINESIZE 1024
#define INPUT_SIZE 1024
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