Ingo Weinhold
ada99c21af
* Added command management, an interactive input loop, and a few basic commands. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20876 a95241bf-73f2-0310-859d-f6bbb57e9c96
118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/*
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* Copyright 2002-2006, Axel Dörfler, [email protected].
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _FSSH_FD_H
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#define _FSSH_FD_H
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#include "vfs.h"
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namespace FSShell {
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struct file_descriptor;
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struct select_sync;
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struct vnode;
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extern io_context* gKernelIOContext;
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struct fd_ops {
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fssh_status_t (*fd_read)(struct file_descriptor *, fssh_off_t pos,
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void *buffer, fssh_size_t *length);
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fssh_status_t (*fd_write)(struct file_descriptor *, fssh_off_t pos,
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const void *buffer, fssh_size_t *length);
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fssh_off_t (*fd_seek)(struct file_descriptor *, fssh_off_t pos,
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int seekType);
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fssh_status_t (*fd_ioctl)(struct file_descriptor *, uint32_t op,
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void *buffer, fssh_size_t length);
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fssh_status_t (*fd_select)(struct file_descriptor *, uint8_t event,
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uint32_t ref, struct select_sync *sync);
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fssh_status_t (*fd_deselect)(struct file_descriptor *, uint8_t event,
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struct select_sync *sync);
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fssh_status_t (*fd_read_dir)(struct file_descriptor *,
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struct fssh_dirent *buffer, fssh_size_t bufferSize,
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uint32_t *_count);
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fssh_status_t (*fd_rewind_dir)(struct file_descriptor *);
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fssh_status_t (*fd_read_stat)(struct file_descriptor *,
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struct fssh_stat *);
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fssh_status_t (*fd_write_stat)(struct file_descriptor *,
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const struct fssh_stat *, int statMask);
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fssh_status_t (*fd_close)(struct file_descriptor *);
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void (*fd_free)(struct file_descriptor *);
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};
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struct file_descriptor {
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int32_t type; /* descriptor type */
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int32_t ref_count;
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int32_t open_count;
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struct fd_ops* ops;
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union {
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struct vnode* vnode;
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struct fs_mount* mount;
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} u;
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void* cookie;
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int32_t open_mode;
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fssh_off_t pos;
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};
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/* Types of file descriptors we can create */
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enum fd_types {
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FDTYPE_FILE = 1,
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FDTYPE_ATTR,
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FDTYPE_DIR,
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FDTYPE_ATTR_DIR,
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FDTYPE_INDEX,
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FDTYPE_INDEX_DIR,
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FDTYPE_QUERY,
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FDTYPE_SOCKET
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};
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// additional open mode - kernel special
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#define FSSH_O_DISCONNECTED 0x80000000
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/* Prototypes */
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extern file_descriptor* alloc_fd(void);
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extern int new_fd_etc(struct io_context *,
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struct file_descriptor *, int firstIndex);
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extern int new_fd(struct io_context *, struct file_descriptor *);
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extern file_descriptor* get_fd(struct io_context *, int);
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extern void close_fd(struct file_descriptor *descriptor);
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extern void put_fd(struct file_descriptor *descriptor);
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extern void disconnect_fd(struct file_descriptor *descriptor);
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extern void inc_fd_ref_count(struct file_descriptor *descriptor);
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extern fssh_status_t select_fd(int fd, uint8_t event, uint32_t ref,
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struct select_sync *sync, bool kernel);
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extern fssh_status_t deselect_fd(int fd, uint8_t event,
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struct select_sync *sync, bool kernel);
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extern bool fd_is_valid(int fd, bool kernel);
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extern vnode* fd_vnode(struct file_descriptor *descriptor);
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extern bool fd_close_on_exec(struct io_context *context, int fd);
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extern void fd_set_close_on_exec(struct io_context *context, int fd,
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bool closeFD);
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static io_context* get_current_io_context(bool kernel);
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/* The prototypes of the (sys|user)_ functions are currently defined in vfs.h */
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/* Inlines */
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static inline struct io_context *
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get_current_io_context(bool /*kernel*/)
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{
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return gKernelIOContext;
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}
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} // namespace FSShell
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#endif /* _FSSH_FD_H */
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