mirror of https://github.com/MidnightCommander/mc
216 lines
7.0 KiB
C
216 lines
7.0 KiB
C
#ifndef DIRENTRY_H
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#define DIRENTRY_H
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#include "vfs.h"
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#define LINK_FOLLOW 15
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#define LINK_NO_FOLLOW -1
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/* For vfs_s_find_entry */
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#define FL_NONE 0
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#define FL_MKDIR 1
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#define FL_MKFILE 2
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#define FL_DIR 4
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/* For open_super */
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#define FL_NO_OPEN 1
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/* For vfs_s_entry_from_path */
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#define FL_FOLLOW 1
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#define FL_DIR 4
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/* Single connection or archive */
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struct vfs_s_super {
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struct vfs_s_super **prevp, *next;
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struct vfs_class *me;
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struct vfs_s_inode *root;
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char *name; /* My name, whatever it means */
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int fd_usage; /* Number of open files */
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int ino_usage; /* Usage count of this superblock */
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int want_stale; /* If set, we do not flush cache properly */
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union {
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struct {
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int sockr, sockw;
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char *cwdir;
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char *host, *user;
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char *password;
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int flags;
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} fish;
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struct {
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int sock;
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char *cwdir;
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char *host, *user;
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char *password;
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int port;
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char *proxy; /* proxy server, NULL if no proxy */
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int failed_on_login; /* used to pass the failure reason to upper levels */
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int use_source_route;
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int use_passive_connection;
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int remote_is_amiga; /* No leading slash allowed for AmiTCP (Amiga) */
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int isbinary;
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int cwd_deferred; /* current_directory was changed but CWD command hasn't
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been sent yet */
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int strict; /* ftp server doesn't understand
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"LIST -la <path>"; use "CWD <path>"/
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"LIST" instead */
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int ctl_connection_busy;
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} ftp;
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struct {
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int fd;
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struct stat st;
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int type; /* Type of the archive */
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struct defer_inode *deferred; /* List of inodes for which another entries may appear */
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} arch;
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} u;
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};
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/*
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* Single virtual file - directory entry. The same inode can have many
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* entries (i.e. hard links), but usually has only one.
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*/
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struct vfs_s_entry {
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struct vfs_s_entry **prevp, *next; /* Pointers in the entry list */
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struct vfs_s_inode *dir; /* Directory we are in, i.e. our parent */
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char *name; /* Name of this entry */
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struct vfs_s_inode *ino; /* ... and its inode */
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};
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/* Single virtual file - inode */
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struct vfs_s_inode {
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struct vfs_s_super *super; /* Archive the file is on */
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struct vfs_s_entry *ent; /* Our entry in the parent directory -
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use only for directories because they
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cannot be hardlinked */
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struct vfs_s_entry *subdir; /* If this is a directory, its entry */
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struct stat st; /* Parameters of this inode */
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char *linkname; /* Symlink's contents */
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char *localname; /* Filename of local file, if we have one */
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struct timeval timestamp; /* Subclass specific */
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long data_offset; /* Subclass specific */
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};
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/* Data associated with an open file */
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struct vfs_s_fh {
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struct vfs_s_inode *ino;
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long pos; /* This is for module's use */
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int handle; /* This is for module's use, but if != -1, will be mc_close()d */
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int changed; /* Did this file change? */
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int linear; /* Is that file open with O_LINEAR? */
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union {
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struct {
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int got, total, append;
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} fish;
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struct {
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int sock, append;
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} ftp;
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} u;
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};
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/*
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* One of our subclasses (tar, cpio, fish, ftpfs) with data and methods.
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* Extends vfs_class. Stored in the "data" field of vfs_class.
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*/
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struct vfs_s_subclass {
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struct vfs_s_super *supers;
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int inode_counter;
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dev_t rdev;
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FILE *logfile;
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int flush; /* if set to 1, invalidate directory cache */
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int (*init_inode) (struct vfs_class *me, struct vfs_s_inode *ino); /* optional */
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void (*free_inode) (struct vfs_class *me, struct vfs_s_inode *ino); /* optional */
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int (*init_entry) (struct vfs_class *me, struct vfs_s_entry *entry); /* optional */
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void *(*archive_check) (struct vfs_class *me, char *name, char *op); /* optional */
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int (*archive_same) (struct vfs_class *me, struct vfs_s_super *psup,
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char *archive_name, char *op, void *cookie);
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int (*open_archive) (struct vfs_class *me, struct vfs_s_super *psup,
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char *archive_name, char *op);
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void (*free_archive) (struct vfs_class *me,
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struct vfs_s_super *psup);
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int (*fh_open) (struct vfs_class *me, struct vfs_s_fh *fh, int flags,
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int mode);
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int (*fh_close) (struct vfs_class *me, struct vfs_s_fh *fh);
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struct vfs_s_entry *(*find_entry) (struct vfs_class *me,
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struct vfs_s_inode *root,
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char *path, int follow, int flags);
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int (*dir_load) (struct vfs_class *me, struct vfs_s_inode *ino,
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char *path);
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int (*dir_uptodate) (struct vfs_class *me, struct vfs_s_inode *ino);
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int (*file_store) (struct vfs_class *me, struct vfs_s_fh *fh,
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char *path, char *localname);
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int (*linear_start) (struct vfs_class *me, struct vfs_s_fh *fh,
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int from);
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int (*linear_read) (struct vfs_class *me, struct vfs_s_fh *fh,
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void *buf, int len);
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void (*linear_close) (struct vfs_class *me, struct vfs_s_fh *fh);
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};
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/* entries and inodes */
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struct vfs_s_inode *vfs_s_new_inode (struct vfs_class *me,
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struct vfs_s_super *super,
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struct stat *initstat);
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struct vfs_s_entry *vfs_s_new_entry (struct vfs_class *me, char *name,
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struct vfs_s_inode *inode);
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void vfs_s_free_entry (struct vfs_class *me, struct vfs_s_entry *ent);
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void vfs_s_insert_entry (struct vfs_class *me, struct vfs_s_inode *dir,
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struct vfs_s_entry *ent);
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struct stat *vfs_s_default_stat (struct vfs_class *me, mode_t mode);
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void vfs_s_add_dots (struct vfs_class *me, struct vfs_s_inode *dir,
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struct vfs_s_inode *parent);
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struct vfs_s_entry *vfs_s_generate_entry (struct vfs_class *me, char *name,
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struct vfs_s_inode *parent,
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mode_t mode);
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struct vfs_s_entry *vfs_s_find_entry_tree (struct vfs_class *me,
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struct vfs_s_inode *root,
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char *path, int follow,
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int flags);
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struct vfs_s_entry *vfs_s_find_entry_linear (struct vfs_class *me,
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struct vfs_s_inode *root,
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char *path, int follow,
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int flags);
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struct vfs_s_inode *vfs_s_find_inode (struct vfs_class *me,
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struct vfs_s_inode *root, char *path,
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int follow, int flags);
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struct vfs_s_inode *vfs_s_find_root (struct vfs_class *me,
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struct vfs_s_entry *entry);
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/* outside interface */
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void vfs_s_init_class (struct vfs_class *vclass);
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char *vfs_s_get_path_mangle (struct vfs_class *me, char *inname,
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struct vfs_s_super **archive, int flags);
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void vfs_s_invalidate (struct vfs_class *me, struct vfs_s_super *super);
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char *vfs_s_fullpath (struct vfs_class *me, struct vfs_s_inode *ino);
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/* network filesystems support */
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int vfs_s_select_on_two (int fd1, int fd2);
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int vfs_s_get_line (struct vfs_class *me, int sock, char *buf, int buf_len,
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char term);
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int vfs_s_get_line_interruptible (struct vfs_class *me, char *buffer,
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int size, int fd);
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/* misc */
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int vfs_s_retrieve_file (struct vfs_class *me, struct vfs_s_inode *ino);
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#define ERRNOR(a, b) do { me->verrno = a; return b; } while (0)
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#define MEDATA ((struct vfs_s_subclass *) me->data)
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#define FH ((struct vfs_s_fh *) fh)
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#define FH_SUPER FH->ino->super
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#define LS_NOT_LINEAR 0
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#define LS_LINEAR_CLOSED 1
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#define LS_LINEAR_OPEN 2
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#endif
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