mirror of https://github.com/MidnightCommander/mc
202 lines
6.3 KiB
C
202 lines
6.3 KiB
C
|
|
/**
|
|
* \file
|
|
* \brief Header: Virtual File System switch code
|
|
*/
|
|
|
|
#ifndef MC__VFS_VFS_H
|
|
#define MC__VFS_VFS_H
|
|
|
|
#include <sys/types.h>
|
|
#include <dirent.h>
|
|
#include <utime.h>
|
|
#include <stdio.h>
|
|
|
|
#include "lib/global.h"
|
|
|
|
/*** typedefs(not structures) and defined constants **********************************************/
|
|
|
|
#if defined (ENABLE_VFS_FTP) || defined (ENABLE_VFS_FISH) || defined (ENABLE_VFS_SMB)
|
|
#define ENABLE_VFS_NET 1
|
|
#endif
|
|
|
|
/**
|
|
* This is the type of callback function passed to vfs_fill_names.
|
|
* It gets the name of the virtual file system as its first argument.
|
|
* See also:
|
|
* vfs_fill_names().
|
|
*/
|
|
|
|
#define VFS_ENCODING_PREFIX "#enc:"
|
|
|
|
#define O_ALL (O_CREAT | O_EXCL | O_NOCTTY | O_NDELAY | O_SYNC | O_WRONLY | O_RDWR | O_RDONLY)
|
|
/* Midnight commander code should _not_ use other flags than those
|
|
listed above and O_APPEND */
|
|
|
|
#if (O_ALL & O_APPEND)
|
|
#warning "Unexpected problem with flags, O_LINEAR disabled, contact pavel@ucw.cz"
|
|
#define O_LINEAR 0
|
|
#define IS_LINEAR(a) 0
|
|
#define NO_LINEAR(a) a
|
|
#else
|
|
#define O_LINEAR O_APPEND
|
|
#define IS_LINEAR(a) ((a) == (O_RDONLY | O_LINEAR)) /* Return only 0 and 1 ! */
|
|
#define NO_LINEAR(a) (((a) == (O_RDONLY | O_LINEAR)) ? O_RDONLY : (a))
|
|
#endif
|
|
|
|
/* O_LINEAR is strange beast, be careful. If you open file asserting
|
|
* O_RDONLY | O_LINEAR, you promise:
|
|
*
|
|
* a) to read file linearly from beginning to the end
|
|
* b) not to open another file before you close this one
|
|
* (this will likely go away in future)
|
|
* as a special gift, you may
|
|
* c) lseek() immediately after open(), giving ftpfs chance to
|
|
* reget. Be warned that this lseek() can fail, and you _have_
|
|
* to handle that gratefully.
|
|
*
|
|
* O_LINEAR allows filesystems not to create temporary file in some
|
|
* cases (ftp transfer). -- pavel@ucw.cz
|
|
*/
|
|
|
|
/* And now some defines for our errors. */
|
|
|
|
#ifdef ENOSYS
|
|
#define E_NOTSUPP ENOSYS /* for use in vfs when module does not provide function */
|
|
#else
|
|
#define E_NOTSUPP EFAULT /* Does this happen? */
|
|
#endif
|
|
|
|
#ifdef ENOMSG
|
|
#define E_UNKNOWN ENOMSG /* if we do not know what error happened */
|
|
#else
|
|
#define E_UNKNOWN EIO /* if we do not know what error happened */
|
|
#endif
|
|
|
|
#ifdef EREMOTEIO
|
|
#define E_REMOTE EREMOTEIO /* if other side of ftp/fish reports error */
|
|
#else
|
|
#define E_REMOTE ENETUNREACH /* :-( there's no EREMOTEIO on some systems */
|
|
#endif
|
|
|
|
#ifdef EPROTO
|
|
#define E_PROTO EPROTO /* if other side fails to follow protocol */
|
|
#else
|
|
#define E_PROTO EIO
|
|
#endif
|
|
|
|
typedef void (*fill_names_f) (const char *);
|
|
|
|
/*** enums ***************************************************************************************/
|
|
|
|
/* Flags of VFS classes */
|
|
typedef enum
|
|
{
|
|
VFSF_UNKNOWN = 0,
|
|
VFSF_LOCAL = 1 << 0, /* Class is local (not virtual) filesystem */
|
|
VFSF_NOLINKS = 1 << 1 /* Hard links not supported */
|
|
} vfs_class_flags_t;
|
|
|
|
/* Operations for mc_ctl - on open file */
|
|
enum
|
|
{
|
|
VFS_CTL_IS_NOTREADY
|
|
};
|
|
|
|
/* Operations for mc_setctl - on path */
|
|
enum
|
|
{
|
|
VFS_SETCTL_FORGET,
|
|
VFS_SETCTL_RUN,
|
|
VFS_SETCTL_LOGFILE,
|
|
VFS_SETCTL_FLUSH, /* invalidate directory cache */
|
|
|
|
/* Setting this makes vfs layer give out potentially incorrect data,
|
|
but it also makes some operations much faster. Use with caution. */
|
|
VFS_SETCTL_STALE_DATA
|
|
};
|
|
|
|
/*** structures declarations (and typedefs of structures)*****************************************/
|
|
|
|
struct vfs_class;
|
|
|
|
/*** global variables defined in .c file *********************************************************/
|
|
|
|
extern int vfs_timeout;
|
|
|
|
#ifdef ENABLE_VFS_NET
|
|
extern int use_netrc;
|
|
#endif
|
|
|
|
/*** declarations of public functions ************************************************************/
|
|
|
|
void vfs_init (void);
|
|
void vfs_shut (void);
|
|
|
|
|
|
void vfs_timeout_handler (void);
|
|
int vfs_timeouts (void);
|
|
void vfs_expire (int now);
|
|
|
|
gboolean vfs_current_is_local (void);
|
|
gboolean vfs_file_is_local (const char *filename);
|
|
ssize_t mc_read (int handle, void *buffer, size_t count);
|
|
ssize_t mc_write (int handle, const void *buffer, size_t count);
|
|
int mc_utime (const char *path, struct utimbuf *times);
|
|
int mc_readlink (const char *path, char *buf, size_t bufsiz);
|
|
int mc_ungetlocalcopy (const char *pathname, const char *local, int has_changed);
|
|
int mc_close (int handle);
|
|
off_t mc_lseek (int fd, off_t offset, int whence);
|
|
DIR *mc_opendir (const char *dirname);
|
|
struct dirent *mc_readdir (DIR * dirp);
|
|
int mc_closedir (DIR * dir);
|
|
int mc_stat (const char *path, struct stat *buf);
|
|
int mc_mknod (const char *path, mode_t mode, dev_t dev);
|
|
int mc_link (const char *name1, const char *name2);
|
|
int mc_mkdir (const char *path, mode_t mode);
|
|
int mc_rmdir (const char *path);
|
|
int mc_fstat (int fd, struct stat *buf);
|
|
int mc_lstat (const char *path, struct stat *buf);
|
|
int mc_symlink (const char *name1, const char *name2);
|
|
int mc_rename (const char *original, const char *target);
|
|
int mc_chmod (const char *path, mode_t mode);
|
|
int mc_chown (const char *path, uid_t owner, gid_t group);
|
|
int mc_chdir (const char *path);
|
|
int mc_unlink (const char *path);
|
|
int mc_ctl (int fd, int ctlop, void *arg);
|
|
int mc_setctl (const char *path, int ctlop, void *arg);
|
|
int mc_open (const char *filename, int flags, ...);
|
|
char *mc_get_current_wd (char *buffer, size_t bufsize);
|
|
char *vfs_canon (const char *path);
|
|
char *mc_getlocalcopy (const char *pathname);
|
|
char *vfs_strip_suffix_from_filename (const char *filename);
|
|
char *vfs_translate_url (const char *url);
|
|
|
|
struct vfs_class *vfs_get_class (const char *path);
|
|
vfs_class_flags_t vfs_file_class_flags (const char *filename);
|
|
|
|
/* return encoding after last #enc: or NULL, if part does not contain #enc:
|
|
* return static buffer */
|
|
const char *vfs_get_encoding (const char *path);
|
|
|
|
/* return new string */
|
|
char *vfs_translate_path_n (const char *path);
|
|
|
|
/* canonize and translate path, return new string */
|
|
char *vfs_canon_and_translate (const char *path);
|
|
|
|
void vfs_stamp_path (const char *path);
|
|
|
|
void vfs_release_path (const char *dir);
|
|
|
|
void vfs_fill_names (fill_names_f);
|
|
|
|
char *vfs_get_current_dir (void);
|
|
/* translate path back to terminal encoding, remove all #enc:
|
|
* every invalid character is replaced with question mark
|
|
* return static buffer */
|
|
char *vfs_translate_path (const char *path);
|
|
|
|
/*** inline functions ****************************************************************************/
|
|
#endif /* MC_VFS_VFS_H */
|