Sat, 04 Feb 2017 16:42:11 +0100
refactors kqueue event handler
/* * 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 WS_VFS_H #define WS_VFS_H #include "nsapi.h" #include "acl.h" #ifdef __cplusplus extern "C" { #endif #define VFS_CHECKS_ACL 0x0001 typedef struct VFS_IO VFS_IO; typedef struct VFS_DIRIO VFS_DIRIO; typedef struct VFSFile VFSFile; typedef struct VFSDir VFSDir; typedef struct VFSEntry VFSEntry; #define VFS_DIR VFSDir* #define VFS_ENTRY VFSEntry 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); VFS_DIR (*opendir)(VFSContext *ctx, char *path); int (*mkdir)(VFSContext *ctx, char *path); int (*unlink)(VFSContext *ctx, char *path); uint32_t flags; }; struct VFSContext { pool_handle_t *pool; Session *sn; Request *rq; VFS *vfs; 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 VFSDir { VFSContext *ctx; VFS_DIRIO *io; void *data; // private data used by the VFSDir implementation int fd; // native file descriptor if available, or -1 }; struct VFSEntry { char *name; struct stat stat; void *stat_extra; int stat_errno; }; 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); off_t (*seek)(SYS_FILE fd, off_t offset, int whence); void (*close)(SYS_FILE fd); }; struct VFS_DIRIO { int (*readdir)(VFS_DIR dir, VFS_ENTRY *entry, int getstat); void (*close)(VFS_DIR dir); }; /* * registers a new VFS */ void vfs_add(char *name, VFS *vfs); /* * 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); VFS_DIR vfs_opendir(VFSContext *ctx, char *path); int vfs_readdir(VFS_DIR dir, VFS_ENTRY *entry); int vfs_readdir_stat(VFS_DIR dir, VFS_ENTRY *entry); void vfs_closedir(VFS_DIR dir); int vfs_mkdir(VFSContext *ctx, char *path); int vfs_unlink(VFSContext *ctx, char *path); #ifdef __cplusplus } #endif #endif /* WS_VFS_H */