--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/server/daemon/vfs.h Sat Mar 16 23:11:34 2013 +0100
@@ -0,0 +1,98 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2013 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef VFS_H
+#define VFS_H
+
+#include "../public/nsapi.h"
+#include "acl.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct VFS_IO VFS_IO;
+typedef struct VFSFile VFSFile;
+
+struct VFS {
+ SYS_FILE (*open)(VFSContext *ctx, char *path, int oflags);
+ int (*stat)(VFSContext *ctx, char *path, struct stat *buf);
+ int (*fstat)(VFSContext *ctx, SYS_FILE fd, struct stat *buf);
+};
+
+struct VFSContext {
+ Session *sn;
+ Request *rq;
+ VFS *vfs;
+ pool_handle_t *pool;
+ User *user;
+ ACLListHandle *acllist;
+ uint32_t aclreqaccess;
+ int vfs_errno;
+};
+
+struct VFSFile {
+ VFSContext *ctx;
+ VFS_IO *io; // IO functions
+ void *data; // private data used by the VFSFile implementation
+ int fd; // native file descriptor if available, or -1
+};
+
+struct VFS_IO {
+ ssize_t (*read)(SYS_FILE fd, void *buf, size_t nbyte);
+ ssize_t (*write)(SYS_FILE fd, const void *buf, size_t nbyte);
+ void (*close)(SYS_FILE fd);
+};
+
+/*
+ * creates a VFSContext for a Request
+ * vfs calls will do ACL checks
+ */
+VFSContext* vfs_request_context(Session *sn, Request *rq);
+
+SYS_FILE vfs_open(VFSContext *ctx, char *path, int oflags);
+SYS_FILE vfs_openRO(VFSContext *ctx, char *path);
+SYS_FILE vfs_openWO(VFSContext *ctx, char *path);
+SYS_FILE vfs_openRW(VFSContext *ctx, char *path);
+int vfs_stat(VFSContext *ctx, char *path, struct stat *buf);
+int vfs_fstat(VFSContext *ctx, SYS_FILE fd, struct stat *buf);
+void vfs_close(SYS_FILE fd);
+
+// private
+int sys_acl_check(VFSContext *ctx, uint32_t acm, uid_t *uid, gid_t *gid);
+void sys_set_error_status(VFSContext *ctx);
+ssize_t sys_file_read(SYS_FILE fd, void *buf, size_t nbyte);
+ssize_t sys_file_write(SYS_FILE fd, const void *buf, size_t nbyte);
+void sys_file_close(SYS_FILE fd);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* VFS_H */
+