commit 63b8c1c99797322bb873803b0296ac302d5de4d2
author Miklos Szeredi <miklos@szeredi.hu> Thu Jun 03 14:45:04 2004 +0000
committer Miklos Szeredi <miklos@szeredi.hu> Thu Jun 03 14:45:04 2004 +0000
tree 0ed50a9e1a1e0bd45e2c47aa49fc26aec0e56e30
parent ff8753578ac425bf64502f6b26c85c5a4cb0d17b

cache ENOSYS on some optional functions

kernel/dir.c

diff --git a/kernel/dir.c b/kernel/dir.c
index 110a472..e941e3e 100644
--- a/kernel/dir.c
+++ b/kernel/dir.c
@@ -783,6 +783,9 @@
 	if (size > FUSE_XATTR_SIZE_MAX)
 		return -E2BIG;
 
+	if (fc->no_setxattr)
+		return -EOPNOTSUPP;
+
 	memset(&inarg, 0, sizeof(inarg));
 	inarg.size = size;
 	inarg.flags = flags;
@@ -797,6 +800,10 @@
 	in.args[2].size = size;
 	in.args[2].value = value;
 	request_send(fc, &in, &out);
+	if (out.h.error == -ENOSYS) {
+		fc->no_setxattr = 1;
+		return -EOPNOTSUPP;
+	}
 	return out.h.error;
 }
 
@@ -810,6 +817,9 @@
 	struct fuse_getxattr_in inarg;
 	struct fuse_getxattr_out outarg;
 
+	if (fc->no_getxattr)
+		return -EOPNOTSUPP;
+
 	memset(&inarg, 0, sizeof(inarg));
 	inarg.size = size;
 	
@@ -833,8 +843,13 @@
 	request_send(fc, &in, &out);
 	if (!out.h.error)
 		return size ? out.args[0].size : outarg.size;
-	else
+	else {
+		if (out.h.error == -ENOSYS) {
+			fc->no_getxattr = 1;
+			return -EOPNOTSUPP;
+		}
 		return out.h.error;
+	}
 }
 
 static ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
@@ -846,6 +861,9 @@
 	struct fuse_getxattr_in inarg;
 	struct fuse_getxattr_out outarg;
 
+	if (fc->no_listxattr)
+		return -EOPNOTSUPP;
+
 	memset(&inarg, 0, sizeof(inarg));
 	inarg.size = size;
 	
@@ -867,8 +885,13 @@
 	request_send(fc, &in, &out);
 	if (!out.h.error)
 		return size ? out.args[0].size : outarg.size;
-	else
+	else {
+		if (out.h.error == -ENOSYS) {
+			fc->no_listxattr = 1;
+			return -EOPNOTSUPP;
+		}
 		return out.h.error;
+	}
 }
 
 static int fuse_removexattr(struct dentry *entry, const char *name)
@@ -878,12 +901,19 @@
 	struct fuse_in in = FUSE_IN_INIT;
 	struct fuse_out out = FUSE_OUT_INIT;
 	
+	if (fc->no_removexattr)
+		return -EOPNOTSUPP;
+
 	in.h.opcode = FUSE_REMOVEXATTR;
 	in.h.ino = inode->i_ino;
 	in.numargs = 1;
 	in.args[0].size = strlen(name) + 1;
 	in.args[0].value = name;
 	request_send(fc, &in, &out);
+	if (out.h.error == -ENOSYS) {
+		fc->no_removexattr = 1;
+		return -EOPNOTSUPP;
+	}
 	return out.h.error;
 	
 }