cifs: rename dup_vol to smb3_fs_context_dup and move it into fs_context.c

Continue restructuring needed for support of new mount API

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/fs/cifs/fs_context.c b/fs/cifs/fs_context.c
index 3d071c87353e..af6ff0192d5e 100644
--- a/fs/cifs/fs_context.c
+++ b/fs/cifs/fs_context.c
@@ -7,6 +7,7 @@
  */
 
 #include "cifsglob.h"
+#include "cifsproto.h"
 #include "cifs_debug.h"
 #include "fs_context.h"
 
@@ -219,3 +220,43 @@ cifs_parse_cache_flavor(char *value, struct smb3_fs_context *ctx)
 	}
 	return 0;
 }
+
+#define DUP_CTX_STR(field)						\
+do {									\
+	if (ctx->field) {						\
+		new_ctx->field = kstrdup(ctx->field, GFP_ATOMIC);	\
+		if (new_ctx->field == NULL) {				\
+			cifs_cleanup_volume_info_contents(new_ctx);	\
+			return -ENOMEM;					\
+		}							\
+	}								\
+} while (0)
+
+int
+smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx)
+{
+	int rc = 0;
+
+	memcpy(new_ctx, ctx, sizeof(*ctx));
+	new_ctx->prepath = NULL;
+	new_ctx->local_nls = NULL;
+	new_ctx->nodename = NULL;
+	new_ctx->username = NULL;
+	new_ctx->password = NULL;
+	new_ctx->domainname = NULL;
+	new_ctx->UNC = NULL;
+	new_ctx->iocharset = NULL;
+
+	/*
+	 * Make sure to stay in sync with cifs_cleanup_volume_info_contents()
+	 */
+	DUP_CTX_STR(prepath);
+	DUP_CTX_STR(username);
+	DUP_CTX_STR(password);
+	DUP_CTX_STR(UNC);
+	DUP_CTX_STR(domainname);
+	DUP_CTX_STR(nodename);
+	DUP_CTX_STR(iocharset);
+
+	return rc;
+}