mc/vfs/xdirentry.h

275 lines
8.4 KiB
C

#ifndef DIRENTRY_H
#define DIRENTRY_H
/* $Id$ */
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <pwd.h>
#include <grp.h>
#include "vfs.h"
#define LINK_FOLLOW 15
#define LINK_NO_FOLLOW -1
/* For vfs_s_find_entry */
#define FL_NONE 0
#define FL_MKDIR 1
#define FL_MKFILE 2
#define FL_DIR 4
/* For open_super */
#define FL_NO_OPEN 1
/* For vfs_s_entry_from_path */
#define FL_FOLLOW 1
#define FL_DIR 4
typedef struct vfs_s_entry {
struct vfs_s_entry **prevp, *next;
struct vfs_s_inode *dir; /* Directory we are in - needed for invalidating directory when file in it changes */
char *name; /* Name of this entry */
struct vfs_s_inode *ino; /* ... and its inode */
int magic;
#define ENTRY_MAGIC 0x014512563
} vfs_s_entry;
typedef struct vfs_s_inode {
struct vfs_s_entry *subdir;
struct vfs_s_super *super;
struct stat st; /* Parameters of this inode */
char *linkname; /* Symlink's contents */
char *localname; /* Filename of local file, if we have one */
int flags;
vfs_s_entry *ent; /* ftp needs this backpointer; don't use if you can avoid it */
union {
struct {
long data_offset;
} tar;
struct {
long offset;
} cpio;
struct {
struct timeval timestamp;
struct stat local_stat;
} fish;
struct {
struct timeval timestamp;
} ftp;
} u;
int magic;
#define INODE_MAGIC 0x93451656
} vfs_s_inode;
typedef struct vfs_s_super {
struct vfs_s_super **prevp, *next;
vfs *me;
vfs_s_inode *root;
char *name; /* My name, whatever it means */
int fd_usage; /* Number of open files */
int ino_usage; /* Usage count of this superblock */
int want_stale; /* If set, we do not flush cache properly */
union {
struct {
int fd;
struct stat tarstat;
} tar;
struct {
int sockr, sockw;
char *home, *cwdir;
char *host, *user;
char *password;
int flags;
} fish;
struct {
int sock;
char *home, *cwdir;
char *host, *user;
char *password;
int port;
char *proxy;
int failed_on_login; /* used to pass the failure reason to upper levels */
int use_proxy; /* use a proxy server */
int use_source_route;
int use_passive_connection;
int remote_is_amiga; /* No leading slash allowed for AmiTCP (Amiga) */
int isbinary;
int cwd_defered; /* current_directory was changed but CWD command hasn't
been sent yet */
int strict; /* ftp server doesn't understand
"LIST -la <path>"; use "CWD <path>"/
"LIST" instead */
#define RFC_AUTODETECT 0
#define RFC_DARING 1
#define RFC_STRICT 2
} ftp;
struct {
int fd;
struct stat stat;
int type; /* Type of the archive */
/*int pos; In case reentrancy will be needed */
struct defer_inode *defered; /* List of inodes for which another entries may appear */
} cpio;
} u;
int magic;
#define SUPER_MAGIC 0x915ac312
} vfs_s_super;
typedef struct vfs_s_fh {
struct vfs_s_inode *ino;
long pos; /* This is for module's use */
int handle; /* This is for module's use, but if != -1, will be mc_close()d */
int changed; /* Did this file change? */
int linear; /* Is that file open with O_LINEAR? */
union {
struct {
int got, total;
} fish;
struct {
int sock;
} ftp;
} u;
int magic;
#define FH_MAGIC 0x91324682
} vfs_s_fh;
struct vfs_s_data {
struct vfs_s_super *supers;
int inode_counter;
dev_t rdev;
FILE *logfile;
int (*init_inode) (vfs *me, vfs_s_inode *ino); /* optional */
void (*free_inode) (vfs *me, vfs_s_inode *ino); /* optional */
int (*init_entry) (vfs *me, vfs_s_entry *entry); /* optional */
void* (*archive_check) (vfs *me, char *name, char *op); /* optional */
int (*archive_same) (vfs *me, vfs_s_super *psup, char *archive_name, char *op, void *cookie);
int (*open_archive) (vfs *me, vfs_s_super *psup, char *archive_name, char *op);
void (*free_archive) (vfs *me, vfs_s_super *psup);
int (*fh_open) (vfs *me, vfs_s_fh *fh, int flags, int mode);
int (*fh_close) (vfs *me, vfs_s_fh *fh);
vfs_s_entry* (*find_entry) (vfs *me, vfs_s_inode *root, char *path, int follow, int flags);
int (*dir_load) (vfs *me, vfs_s_inode *ino, char *path);
int (*dir_uptodate) (vfs *me, vfs_s_inode *ino);
int (*file_store) (vfs *me, vfs_s_super *super, char *path, char *localname);
int (*linear_start) (vfs *me, vfs_s_fh *fh, int from);
int (*linear_read) (vfs *me, vfs_s_fh *fh, void *buf, int len);
void (*linear_close) (vfs *me, vfs_s_fh *fh);
};
/* entries and inodes */
vfs_s_inode *vfs_s_new_inode (vfs *me, vfs_s_super *super,
struct stat *initstat);
vfs_s_entry *vfs_s_new_entry (vfs *me, char *name, vfs_s_inode *inode);
void vfs_s_free_entry (vfs *me, vfs_s_entry *ent);
void vfs_s_insert_entry (vfs *me, vfs_s_inode *dir,
vfs_s_entry *ent);
struct stat *vfs_s_default_stat (vfs *me, mode_t mode);
void vfs_s_add_dots (vfs *me, vfs_s_inode *dir,
vfs_s_inode *parent);
vfs_s_entry *vfs_s_generate_entry (vfs *me, char *name,
struct vfs_s_inode *parent, mode_t mode);
vfs_s_entry *vfs_s_automake (vfs *me, vfs_s_inode *dir, char *path,
int flags);
vfs_s_entry *vfs_s_find_entry_tree (vfs *me, vfs_s_inode *root, char *path,
int follow, int flags);
vfs_s_entry *vfs_s_find_entry_linear (vfs *me, vfs_s_inode *root, char *path,
int follow, int flags);
vfs_s_inode *vfs_s_find_inode (vfs *me, vfs_s_inode *root, char *path,
int follow, int flags);
vfs_s_inode *vfs_s_find_root (vfs *me, vfs_s_entry *entry);
vfs_s_entry *vfs_s_resolve_symlink (vfs *me, vfs_s_entry *entry, char *path,
int follow);
/* superblock games */
vfs_s_super *vfs_s_new_super (vfs *me);
void vfs_s_free_super (vfs *me, vfs_s_super *super);
/* outside interface */
char *vfs_s_get_path_mangle (vfs *me, char *inname, vfs_s_super **archive,
int flags);
char *vfs_s_get_path (vfs *me, char *inname, vfs_s_super **archive,
int flags);
void vfs_s_invalidate (vfs *me, vfs_s_super *super);
char *vfs_s_fullpath (vfs *me, vfs_s_inode *ino);
/* readdir & friends */
vfs_s_super *vfs_s_super_from_path (vfs *me, char *name);
vfs_s_inode *vfs_s_inode_from_path (vfs *me, char *name, int flags);
void *vfs_s_opendir (vfs *me, char *dirname);
void *vfs_s_readdir (void *data);
int vfs_s_telldir (void *data);
void vfs_s_seekdir (void *data, int offset);
int vfs_s_closedir (void *data);
int vfs_s_chdir (vfs *me, char *path);
/* stat & friends */
int vfs_s_stat (vfs *me, char *path, struct stat *buf);
int vfs_s_lstat (vfs *me, char *path, struct stat *buf);
int vfs_s_fstat (void *fh, struct stat *buf);
int vfs_s_readlink (vfs *me, char *path, char *buf, int size);
void *vfs_s_open (vfs *me, char *file, int flags, int mode);
int vfs_s_read (void *fh, char *buffer, int count);
int vfs_s_write (void *fh, char *buffer, int count);
int vfs_s_lseek (void *fh, off_t offset, int whence);
int vfs_s_close (void *fh);
/* mc support */
void vfs_s_fill_names (vfs *me, void (*func)(char *));
int vfs_s_ferrno(vfs *me);
void vfs_s_dump(vfs *me, char *prefix, vfs_s_inode *ino);
char *vfs_s_getlocalcopy (vfs *me, char *path);
/* stamping support */
vfsid vfs_s_getid (vfs *me, char *path, struct vfs_stamping **parent);
int vfs_s_nothingisopen (vfsid id);
void vfs_s_free (vfsid id);
int vfs_s_setctl (vfs *me, char *path, int ctlop, char *arg);
/* network filesystems support */
int vfs_s_select_on_two (int fd1, int fd2);
int vfs_s_get_line (vfs *me, int sock, char *buf, int buf_len, char term);
int vfs_s_get_line_interruptible (vfs *me, char *buffer, int size, int fd);
/* misc */
int vfs_s_retrieve_file (vfs *me, struct vfs_s_inode *ino);
#if 0
/* If non-null, FREE */
#define ifree(ptr) do { if (ptr) g_free(ptr); } while (0)
#define ERRNOR(a, b) do { me->verrno = a; return b; } while (0)
#else
#define ifree(ptr) { if (ptr) g_free(ptr); }
#define ERRNOR(a, b) { me->verrno = a; return b; }
#endif
#define MEDATA ((struct vfs_s_data *) me->data)
#define FH ((struct vfs_s_fh *) fh)
#define FH_SUPER FH->ino->super
#define LS_NOT_LINEAR 0
#define LS_LINEAR_CLOSED 1
#define LS_LINEAR_OPEN 2
#endif