dfa8e8ef78
Added a "mode" parameter to the sys_create_symlink() function. Added an open_mode to the file_descriptor struct. git-svn-id: file:///srv/svn/repos/haiku/trunk/current@591 a95241bf-73f2-0310-859d-f6bbb57e9c96
224 lines
10 KiB
C
Executable File
224 lines
10 KiB
C
Executable File
/*
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** Copyright 2001-2002, Travis Geiselbrecht. All rights reserved.
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** Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_VFS_H
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#define _KERNEL_VFS_H
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#include <kernel.h>
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#include <stage2.h>
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#include <sys/stat.h>
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#include <dirent.h>
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#define DEFAULT_FD_TABLE_SIZE 128
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#define MAX_FD_TABLE_SIZE 2048
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#include <vfs_types.h>
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/* macro to allocate a iovec array on the stack */
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#define IOVECS(name, size) \
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uint8 _##name[sizeof(iovecs) + (size)*sizeof(iovec)]; \
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iovecs *name = (iovecs *)_##name
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struct fs_info;
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typedef void *fs_cookie;
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typedef void *file_cookie;
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typedef void *fs_vnode;
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct fs_calls {
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/* general operations */
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int (*fs_mount)(fs_id id, const char *device, void *args, fs_cookie *_fs, vnode_id *_rootVnodeID);
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int (*fs_unmount)(fs_cookie fs);
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int (*fs_read_fs_info)(fs_cookie fs, struct fs_info *info);
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int (*fs_write_fs_info)(fs_cookie fs, const struct fs_info *info, int mask);
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int (*fs_sync)(fs_cookie fs);
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/* vnode operations */
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int (*fs_lookup)(fs_cookie fs, fs_vnode dir, const char *name, vnode_id *_id, int *_type);
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int (*fs_get_vnode_name)(fs_cookie fs, fs_vnode vnode, char *buffer, size_t bufferSize);
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int (*fs_get_vnode)(fs_cookie fs, vnode_id id, fs_vnode *_vnode, bool reenter);
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int (*fs_put_vnode)(fs_cookie fs, fs_vnode vnode, bool reenter);
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int (*fs_remove_vnode)(fs_cookie fs, fs_vnode vnode, bool reenter);
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/* VM file access */
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int (*fs_can_page)(fs_cookie fs, fs_vnode v);
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ssize_t (*fs_read_page)(fs_cookie fs, fs_vnode v, iovecs *vecs, off_t pos);
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ssize_t (*fs_write_page)(fs_cookie fs, fs_vnode v, iovecs *vecs, off_t pos);
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/* common operations */
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int (*fs_ioctl)(fs_cookie fs, fs_vnode v, file_cookie cookie, ulong op, void *buffer, size_t length);
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int (*fs_fsync)(fs_cookie fs, fs_vnode v);
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int (*fs_read_link)(fs_cookie fs, fs_vnode link, char *buffer, size_t bufferSize);
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int (*fs_write_link)(fs_cookie fs, fs_vnode link, char *toPath);
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int (*fs_symlink)(fs_cookie fs, fs_vnode dir, const char *name, const char *path, int mode);
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int (*fs_unlink)(fs_cookie fs, fs_vnode dir, const char *name);
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int (*fs_rename)(fs_cookie fs, fs_vnode olddir, const char *oldname, fs_vnode newdir, const char *newname);
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int (*fs_read_stat)(fs_cookie fs, fs_vnode v, struct stat *stat);
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int (*fs_write_stat)(fs_cookie fs, fs_vnode v, const struct stat *stat, int statMask);
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/* file operations */
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int (*fs_create)(fs_cookie fs, fs_vnode dir, const char *name, int omode, int perms, file_cookie *_cookie, vnode_id *_newVnodeID);
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int (*fs_open)(fs_cookie fs, fs_vnode v, int oflags, file_cookie *_cookie);
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int (*fs_close)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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int (*fs_free_cookie)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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ssize_t (*fs_read)(fs_cookie fs, fs_vnode v, file_cookie cookie, void *buffer, off_t pos, size_t *length);
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ssize_t (*fs_write)(fs_cookie fs, fs_vnode v, file_cookie cookie, const void *buffer, off_t pos, size_t *length);
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off_t (*fs_seek)(fs_cookie fs, fs_vnode v, file_cookie cookie, off_t pos, int seekType);
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/* directory operations */
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int (*fs_create_dir)(fs_cookie fs, fs_vnode parent, const char *name, int perms, vnode_id *_newVnodeID);
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int (*fs_open_dir)(fs_cookie fs, fs_vnode v, file_cookie *_cookie);
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int (*fs_close_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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int (*fs_free_dir_cookie)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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int (*fs_read_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie, struct dirent *buffer, size_t bufferSize, uint32 *_num);
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int (*fs_rewind_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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/* attribute directory operations */
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// int (*fs_open_attr_dir)(fs_cookie fs, fs_vnode v, file_cookie *cookie, int oflags);
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// int (*fs_close_attr_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_free_attr_dir_cookie)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_read_attr_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie, struct dirent *buffer, size_t bufferSize, uint32 *_num);
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// int (*fs_rewind_attr_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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//
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// /* attribute operations */
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// int (*fs_open_attr)(fs_cookie fs, fs_vnode v, file_cookie *cookie, stream_type st, int oflags);
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// int (*fs_close_attr)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_free_attr_cookie)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// ssize_t (*fs_read_attr)(fs_cookie fs, fs_vnode v, file_cookie cookie, void *buf, off_t pos, size_t *len);
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// ssize_t (*fs_write_attr)(fs_cookie fs, fs_vnode v, file_cookie cookie, const void *buf, off_t pos, size_t *len);
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// int (*fs_seek_attr)(fs_cookie fs, fs_vnode v, file_cookie cookie, off_t pos, int st);
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// int (*fs_rename_attr)(fs_cookie fs, fs_vnode file, const char *oldname, const char *newname);
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//
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// /* index directory & index operations */
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// int (*fs_open_index_dir)(fs_cookie fs, fs_vnode v, file_cookie *cookie, int oflags);
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// int (*fs_close_index_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_free_index_dir_cookie)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_read_index_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie, struct dirent *buffer, size_t bufferSize, uint32 *_num);
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// int (*fs_rewind_index_dir)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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//
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// /* query operations */
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// int (*fs_open_query)(fs_cookie fs, fs_vnode v, file_cookie *cookie, int oflags);
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// int (*fs_close_query)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_free_query_cookie)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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// int (*fs_read_query)(fs_cookie fs, fs_vnode v, file_cookie cookie, struct dirent *buffer, size_t bufferSize, uint32 *_num);
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// int (*fs_rewind_query)(fs_cookie fs, fs_vnode v, file_cookie cookie);
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};
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int vfs_init(kernel_args *ka);
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int vfs_bootstrap_all_filesystems(void);
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int vfs_register_filesystem(const char *name, struct fs_calls *calls);
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void *vfs_new_io_context(void *parent_ioctx);
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int vfs_free_io_context(void *ioctx);
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int vfs_test(void);
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struct rlimit;
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int vfs_getrlimit(int resource, struct rlimit * rlp);
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int vfs_setrlimit(int resource, const struct rlimit * rlp);
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image_id vfs_load_fs_module(const char *path);
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/* calls needed by fs internals */
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int vfs_get_vnode(fs_id fsid, vnode_id vnid, fs_vnode *v);
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int vfs_put_vnode(fs_id fsid, vnode_id vnid);
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int vfs_remove_vnode(fs_id fsid, vnode_id vnid);
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/* calls needed by the VM for paging */
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int vfs_get_vnode_from_fd(int fd, bool kernel, void **vnode);
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int vfs_get_vnode_from_path(const char *path, bool kernel, void **vnode);
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int vfs_put_vnode_ptr(void *vnode);
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void vfs_vnode_acquire_ref(void *vnode);
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void vfs_vnode_release_ref(void *vnode);
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ssize_t vfs_can_page(void *vnode);
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ssize_t vfs_read_page(void *vnode, iovecs *vecs, off_t pos);
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ssize_t vfs_write_page(void *vnode, iovecs *vecs, off_t pos);
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void *vfs_get_cache_ptr(void *vnode);
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int vfs_set_cache_ptr(void *vnode, void *cache);
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/* calls kernel code should make for file I/O */
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int sys_mount(const char *path, const char *device, const char *fs_name, void *args);
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int sys_unmount(const char *path);
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int sys_sync(void);
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int sys_open_entry_ref(dev_t device, ino_t inode, const char *name, int omode);
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int sys_open(const char *path, int omode);
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int sys_open_dir_node_ref(dev_t device, ino_t inode);
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int sys_open_dir_entry_ref(dev_t device, ino_t inode, const char *name);
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int sys_open_dir(const char *path);
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int sys_fsync(int fd);
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off_t sys_seek(int fd, off_t pos, int seekType);
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int sys_create_entry_ref(dev_t device, ino_t inode, const char *uname, int omode, int perms);
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int sys_create(const char *path, int omode, int perms);
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int sys_create_dir_entry_ref(dev_t device, ino_t inode, const char *name, int perms);
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int sys_create_dir(const char *path, int perms);
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int sys_read_link(const char *path, char *buffer, size_t bufferSize);
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int sys_create_symlink(const char *path, const char *toPath, int mode);
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int sys_unlink(const char *path);
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int sys_rename(const char *oldpath, const char *newpath);
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int sys_read_stat(const char *path, bool traverseLink, struct stat *stat);
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int sys_write_stat(const char *path, bool traverseLink, struct stat *stat, int statMask);
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char *sys_getcwd(char *buf, size_t size);
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int sys_setcwd(const char* path);
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/* calls the syscall dispatcher should use for user file I/O */
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int user_mount(const char *path, const char *device, const char *fs_name, void *args);
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int user_unmount(const char *path);
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int user_sync(void);
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int user_open_entry_ref(dev_t device, ino_t inode, const char *name, int omode);
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int user_open(const char *path, int omode);
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int user_open_dir_node_ref(dev_t device, ino_t inode);
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int user_open_dir_entry_ref(dev_t device, ino_t inode, const char *uname);
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int user_open_dir(const char *path);
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int user_fsync(int fd);
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off_t user_seek(int fd, off_t pos, int seekType);
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int user_create_entry_ref(dev_t device, ino_t inode, const char *uname, int omode, int perms);
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int user_create(const char *path, int omode, int perms);
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int user_create_dir_entry_ref(dev_t device, ino_t inode, const char *name, int perms);
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int user_create_dir(const char *path, int perms);
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int user_read_link(const char *path, char *buffer, size_t bufferSize);
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int user_create_symlink(const char *path, const char *toPath, int mode);
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int user_unlink(const char *path);
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int user_rename(const char *oldpath, const char *newpath);
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int user_read_stat(const char *path, bool traverseLink, struct stat *stat);
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int user_write_stat(const char *path, bool traverseLink, struct stat *stat, int statMask);
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int user_getcwd(char *buf, size_t size);
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int user_setcwd(const char* path);
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/* fd kernel prototypes (implementation located in fd.c) */
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extern ssize_t sys_read(int fd, void *buf, off_t pos, size_t len);
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extern ssize_t sys_write(int fd, const void *buf, off_t pos, size_t len);
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extern int sys_ioctl(int fd, ulong cmd, void *data, size_t length);
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extern ssize_t sys_read_dir(int fd, struct dirent *buffer, size_t bufferSize, uint32 maxCount);
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extern status_t sys_rewind_dir(int fd);
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extern int sys_close(int fd);
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extern int sys_dup(int fd);
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extern int sys_dup2(int ofd, int nfd);
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/* fd user prototypes (implementation located in fd.c) */
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extern ssize_t user_read(int fd, void *buf, off_t pos, size_t len);
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extern ssize_t user_write(int fd, const void *buf, off_t pos, size_t len);
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extern int user_ioctl(int fd, ulong cmd, void *data, size_t length);
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extern ssize_t user_read_dir(int fd, struct dirent *buffer, size_t bufferSize, uint32 maxCount);
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extern status_t user_rewind_dir(int fd);
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extern int user_fstat(int, struct stat *);
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extern int user_close(int fd);
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extern int user_dup(int fd);
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extern int user_dup2(int ofd, int nfd);
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/* vfs entry points... */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_VFS_H */
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