7d5be143e8
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@6692 a95241bf-73f2-0310-859d-f6bbb57e9c96
205 lines
8.8 KiB
C
Executable File
205 lines
8.8 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 <sys/stat.h>
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#include <sys/select.h>
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#include <signal.h>
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#include <dirent.h>
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#include <fs_interface.h>
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#include <lock.h>
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#include <util/list.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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#define MAX_NODE_MONITORS 4096
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#include <vfs_types.h>
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struct kernel_args;
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struct file_descriptor;
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struct selectsync;
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struct pollfd;
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/** The I/O context of a process/team, holds the fd array among others */
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typedef struct io_context {
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struct vnode *cwd;
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mutex io_mutex;
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uint32 table_size;
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uint32 num_used_fds;
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struct file_descriptor **fds;
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struct list node_monitors;
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uint32 num_monitors;
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uint32 max_monitors;
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} io_context;
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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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#ifdef __cplusplus
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extern "C" {
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#endif
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int vfs_init(struct 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_ops *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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// ToDo: for now; this prototype should be in os/drivers/Drivers.h
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// or similar places.
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extern status_t notify_select_event(struct selectsync *sync, uint32 ref, uint8 event);
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/* calls needed by fs internals */
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extern status_t vfs_new_vnode(mount_id mountID, vnode_id vnodeID, fs_vnode privateNode);
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extern status_t vfs_get_vnode(mount_id mountID, vnode_id vnodeID, fs_vnode *_privateNode);
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extern status_t vfs_put_vnode(mount_id mountID, vnode_id vnodeID);
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extern status_t vfs_remove_vnode(mount_id mountID, vnode_id vnodeID);
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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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status_t 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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/* special module convenience call */
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status_t vfs_get_module_path(const char *basePath, const char *moduleName, char *pathBuffer, size_t bufferSize);
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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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status_t _kern_read_fs_info(dev_t device, struct fs_info *info);
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status_t _kern_write_fs_info(dev_t device, const struct fs_info *info, int mask);
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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_remove_dir(const char *path);
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int sys_read_link(const char *path, char *buffer, size_t bufferSize);
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int sys_write_link(const char *path, const char *toPath);
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int sys_create_symlink(const char *path, const char *toPath, int mode);
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int sys_create_link(const char *path, const char *toPath);
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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_access(const char *path, int mode);
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int sys_read_path_stat(const char *path, bool traverseLink, struct stat *stat);
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int sys_write_path_stat(const char *path, bool traverseLink, const struct stat *stat, int statMask);
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int sys_select(int numfds, fd_set *readSet, fd_set *writeSet, fd_set *errorSet,
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bigtime_t timeout, const sigset_t *sigMask);
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int sys_poll(struct pollfd *fds, int numfds, bigtime_t timeout);
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int sys_open_attr_dir(int fd, const char *path);
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int sys_create_attr(int fd, const char *name, uint32 type, int openMode);
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int sys_open_attr(int fd, const char *name, int openMode);
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int sys_remove_attr(int fd, const char *name);
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int sys_rename_attr(int fromFile, const char *fromName, int toFile, const char *toName);
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int sys_open_index_dir(dev_t device);
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int sys_create_index(dev_t device, const char *name, uint32 type, uint32 flags);
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int sys_read_index_stat(dev_t device, const char *name, struct stat *stat);
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int sys_remove_index(dev_t device, const char *name);
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int sys_getcwd(char *buffer, size_t size);
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int sys_setcwd(int fd, 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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status_t _user_read_fs_info(dev_t device, struct fs_info *info);
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status_t _user_write_fs_info(dev_t device, const struct fs_info *info, int mask);
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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_remove_dir(const char *path);
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int user_read_link(const char *path, char *buffer, size_t bufferSize);
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int user_write_link(const char *path, const char *toPath);
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int user_create_symlink(const char *path, const char *toPath, int mode);
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int user_create_link(const char *path, const char *toPath);
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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_access(const char *path, int mode);
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int user_read_path_stat(const char *path, bool traverseLink, struct stat *stat);
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int user_write_path_stat(const char *path, bool traverseLink, const struct stat *stat, int statMask);
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int user_select(int numfds, fd_set *readSet, fd_set *writeSet, fd_set *errorSet,
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bigtime_t timeout, const sigset_t *sigMask);
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int user_poll(struct pollfd *fds, int numfds, bigtime_t timeout);
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int user_open_attr_dir(int fd, const char *path);
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int user_create_attr(int fd, const char *name, uint32 type, int openMode);
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int user_open_attr(int fd, const char *name, int openMode);
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int user_remove_attr(int fd, const char *name);
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int user_rename_attr(int fromFile, const char *fromName, int toFile, const char *toName);
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int user_open_index_dir(dev_t device);
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int user_create_index(dev_t device, const char *name, uint32 type, uint32 flags);
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int user_read_index_stat(dev_t device, const char *name, struct stat *stat);
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int user_remove_index(dev_t device, const char *name);
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int user_getcwd(char *buffer, size_t size);
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int user_setcwd(int fd, 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, off_t pos, void *buffer, size_t bufferSize);
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extern ssize_t sys_write(int fd, off_t pos, const void *buffer, size_t bufferSize);
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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_read_stat(int fd, struct stat *stat);
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extern int sys_write_stat(int fd, const struct stat *stat, int statMask);
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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, off_t pos, void *buffer, size_t bufferSize);
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extern ssize_t user_write(int fd, off_t pos, const void *buffer, size_t bufferSize);
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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_read_stat(int fd, struct stat *stat);
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extern int user_write_stat(int fd, const struct stat *stat, int statMask);
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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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