#ifndef __VFS_H #define __VFS_H #if !defined(SCO_FLAVOR) || !defined(_SYS_SELECT_H) # include /* alex: this redefines struct timeval */ #endif /* SCO_FLAVOR */ #ifdef HAVE_UTIME_H # include #else struct utimbuf { time_t actime; time_t modtime; }; #endif #ifdef USE_VFS #ifdef HAVE_MMAP #include #endif #ifdef VFS_STANDALONE #undef USE_EXT2FSLIB #else #undef BROKEN_PATHS /* * Define this to allow /any/path/#ftp/ to access ftp tree. Broken, yes. */ #endif /* Our virtual file system layer */ typedef void * vfsid; struct vfs_stamping; typedef struct vfs { struct vfs *next; char *name; /* "FIles over SHell" */ int flags; #define F_EXEC 1 #define F_NET 2 char *prefix; /* "#fish:" */ void *data; /* this is for filesystem's own use */ int verrno; /* can't use errno because glibc2 might define errno as function */ int (*init)(struct vfs *me); /* 1..initialized succesfully */ void (*done)(struct vfs *me); void (*fill_names)(struct vfs *me, void (*)(char *)); int (*which)(struct vfs *me, char *path); /* Returns '-1' if this path does not belong to this filesystem */ void *(*open)(struct vfs *me, char *fname, int flags, int mode); int (*close)(void *vfs_info); int (*read)(void *vfs_info, char *buffer, int count); int (*write)(void *vfs_info, char *buf, int count); void *(*opendir)(struct vfs *me, char *dirname); void *(*readdir)(void *vfs_info); int (*closedir)(void *vfs_info); int (*telldir)(void *vfs_info); void (*seekdir)(void *vfs_info, int offset); int (*stat)(struct vfs *me, char *path, struct stat *buf); int (*lstat)(struct vfs *me, char *path, struct stat *buf); int (*fstat)(void *vfs_info, struct stat *buf); int (*chmod)(struct vfs *me, char *path, int mode); int (*chown)(struct vfs *me, char *path, int owner, int group); int (*utime)(struct vfs *me, char *path, struct utimbuf *times); int (*readlink)(struct vfs *me, char *path, char *buf, int size); int (*symlink)(struct vfs *me, char *n1, char *n2); int (*link)(struct vfs *me, char *p1, char *p2); int (*unlink)(struct vfs *me, char *path); int (*rename)(struct vfs *me, char *p1, char *p2); int (*chdir)(struct vfs *me, char *path); int (*ferrno)(struct vfs *me); int (*lseek)(void *vfs_info, off_t offset, int whence); int (*mknod)(struct vfs *me, char *path, int mode, int dev); vfsid (*getid)(struct vfs *me, char *path, struct vfs_stamping **parent); int (*nothingisopen)(vfsid id); void (*free)(vfsid id); char *(*getlocalcopy)(struct vfs *me, char *filename); void (*ungetlocalcopy)(struct vfs *me, char *filename, char *local, int has_changed); int (*mkdir)(struct vfs *me, char *path, mode_t mode); int (*rmdir)(struct vfs *me, char *path); int (*ctl)(void *vfs_info, int ctlop, int arg); int (*setctl)(struct vfs *me, char *path, int ctlop, char *arg); #ifdef HAVE_MMAP caddr_t (*mmap)(struct vfs *me, caddr_t addr, size_t len, int prot, int flags, void *vfs_info, off_t offset); int (*munmap)(struct vfs *me, caddr_t addr, size_t len, void *vfs_info); #endif } vfs; /* Other file systems */ extern vfs vfs_local_ops; extern vfs vfs_tarfs_ops; extern vfs vfs_ftpfs_ops; extern vfs vfs_fish_ops; extern vfs vfs_mcfs_ops; extern vfs vfs_extfs_ops; extern vfs vfs_sfs_ops; extern vfs vfs_undelfs_ops; struct vfs_stamping { vfs *v; vfsid id; struct vfs_stamping *parent; /* At the moment applies to tarfs only */ struct vfs_stamping *next; struct timeval time; }; void vfs_init (void); void vfs_shut (void); extern int vfs_type_absolute; vfs *vfs_type (char *path); vfs *vfs_split (char *path, char **inpath, char **op); vfsid vfs_ncs_getid (vfs *nvfs, char *dir, struct vfs_stamping **par); void vfs_rm_parents (struct vfs_stamping *stamp); char *vfs_path (char *path); char *vfs_canon (char *path); char *mc_get_current_wd (char *buffer, int bufsize); int vfs_current_is_local (void); #if 0 int vfs_current_is_extfs (void); int vfs_current_is_tarfs (void); #endif int vfs_file_is_local (char *name); int vfs_file_is_ftp (char *filename); char *vfs_get_current_dir (void); void vfs_stamp (vfs *, vfsid); void vfs_rmstamp (vfs *, vfsid, int); void vfs_addstamp (vfs *, vfsid, struct vfs_stamping *); void vfs_add_noncurrent_stamps (vfs *, vfsid, struct vfs_stamping *); void vfs_add_current_stamps (void); void vfs_free_resources(char *path); void vfs_timeout_handler (); int vfs_timeouts (); void vfs_fill_names (void (*)(char *)); char *vfs_translate_url (char *); void ftpfs_set_debug (char *file); #ifdef USE_NETCODE void ftpfs_hint_reread(int reread); void ftpfs_flushdir(void); #else # define ftpfs_flushdir() # define ftpfs_hint_reread(x) #endif /* Only the routines outside of the VFS module need the emulation macros */ int mc_open (char *file, int flags, ...); int mc_close (int handle); int mc_read (int handle, char *buffer, int count); int mc_write (int hanlde, char *buffer, int count); off_t mc_lseek (int fd, off_t offset, int whence); int mc_chdir (char *); DIR *mc_opendir (char *dirname); struct dirent *mc_readdir(DIR *dirp); int mc_closedir (DIR *dir); int mc_telldir (DIR *dir); void mc_seekdir (DIR *dir, int offset); int mc_stat (char *path, struct stat *buf); int mc_lstat (char *path, struct stat *buf); int mc_fstat (int fd, struct stat *buf); int mc_chmod (char *path, int mode); int mc_chown (char *path, int owner, int group); int mc_utime (char *path, struct utimbuf *times); int mc_readlink(char *path, char *buf, int bufsiz); int mc_unlink (char *path); int mc_symlink (char *name1, char *name2); int mc_link (char *name1, char *name2); int mc_mknod (char *, int, int); int mc_rename (char *original, char *target); int mc_write (int fd, char *buf, int nbyte); int mc_rmdir (char *path); int mc_mkdir (char *path, mode_t mode); char *mc_getlocalcopy (char *filename); void mc_ungetlocalcopy (char *filename, char *local, int has_changed); char *mc_def_getlocalcopy (vfs *vfs, char *filename); void mc_def_ungetlocalcopy (vfs *vfs, char *filename, char *local, int has_changed); int mc_ctl (int fd, int ctlop, int arg); int mc_setctl (char *path, int ctlop, char *arg); #ifdef HAVE_MMAP caddr_t mc_mmap (caddr_t, size_t, int, int, int, off_t); int mc_unmap (caddr_t, size_t); int mc_munmap (caddr_t addr, size_t len); #endif /* HAVE_MMAP */ #else #ifdef USE_NETCODE # undef USE_NETCODE #endif # undef USE_NETCODE # define vfs_fill_names(x) # define vfs_add_current_stamps() # define vfs_current_is_local() 1 # define vfs_file_is_local(x) 1 # define vfs_file_is_ftp(x) 0 # define vfs_current_is_tarfs() 0 # define vfs_current_is_extfs() 0 # define vfs_path(x) x # define mc_close close # define mc_read read # define mc_write write # define mc_lseek lseek # define mc_opendir opendir # define mc_readdir readdir # define mc_closedir closedir # define mc_telldir telldir # define mc_seekdir seekdir # define mc_get_current_wd(x,size) get_current_wd (x, size) # define mc_fstat fstat # define mc_lstat lstat # define mc_readlink readlink # define mc_symlink symlink # define mc_rename rename #ifndef __os2__ # define mc_open open # define mc_utime utime # define mc_chmod chmod # define mc_chown chown # define mc_chdir chdir # define mc_unlink unlink #endif # define mc_mmap mmap # define mc_munmap munmap # define mc_ctl(a,b,c) 0 # define mc_setctl(a,b,c) # define mc_stat stat # define mc_mknod mknod # define mc_link link # define mc_mkdir mkdir # define mc_rmdir rmdir # define is_special_prefix(x) 0 # define vfs_type(x) (vfs *)(NULL) # define vfs_init() # define vfs_shut() # define vfs_canon(p) strdup (canonicalize_pathname(p)) # define vfs_free_resources() # define vfs_timeout_handler() # define vfs_timeouts() 0 # define vfs_force_expire() typedef int vfs; # define mc_getlocalcopy(x) NULL # define mc_ungetlocalcopy(x,y,z) # define ftpfs_hint_reread(x) # define ftpfs_flushdir() #ifdef _OS_NT # undef mc_rmdir #endif #ifdef OS2_NT # undef mc_ctl # undef mc_unlink # define mc_ctl(a,b,c) 0 # ifndef __EMX__ # undef mc_mkdir # define mc_mkdir(a,b) mkdir(a) # endif #endif #endif /* USE_VFS */ #define mc_errno errno /* These functions are meant for use by vfs modules */ extern int vfs_parse_ls_lga (char *p, struct stat *s, char **filename, char **linkname); extern int vfs_split_text (char *p); extern int vfs_parse_filetype (char c); extern int vfs_parse_filemode (char *p); extern int vfs_parse_filedate(int idx, time_t *t); extern void vfs_die (char *msg); extern char *vfs_get_password (char *msg); extern char *vfs_get_host_and_username (char *path, char **host, char **user, int *port, int default_port, int default_is_anon, char **pass); extern void vfs_print_stats (char *fs_name, char *action, char *file_name, int have, int need); #define MCCTL_SETREMOTECOPY 0 #define MCCTL_ISREMOTECOPY 1 #define MCCTL_REMOTECOPYCHUNK 2 #define MCCTL_FINISHREMOTE 3 #define MCCTL_FLUSHDIR 4 /* Unreferenced */ #define MCCTL_REMOVELOCALCOPY 5 #define MCCTL_IS_NOTREADY 6 #define MCCTL_FORGET_ABOUT 7 #define MCCTL_EXTFS_RUN 8 extern int vfs_flags; extern uid_t vfs_uid; extern gid_t vfs_gid; #define FL_ALWAYS_MAGIC 1 #define FL_NO_MCFS 2 #define FL_NO_FTPFS 4 #define FL_NO_UNDELFS 8 #define FL_NO_TARFS 16 #define FL_NO_EXTFS 32 #define FL_NO_SFS 64 #define FL_NO_FISH 128 #define FL_NO_CWDSETUP 0x40000000 #ifdef VFS_STANDALONE extern void mc_vfs_init( void ); extern void mc_vfs_done( void ); #endif #define ERRNOR(x,y) do { my_errno = x; return y; } while(0) #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 carefull. If you open file asserting * O_RDONLY | O_LINEAR, you promise: * * a) to read file linearily from beggining 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 */ #define VFS_MIN(a,b) ((a)<(b) ? (a) : (b)) #define VFS_MAX(a,b) ((a)<(b) ? (b) : (a)) #ifdef HAVE_MMAP #define MMAPNULL , NULL, NULL #else #define MMAPNULL #endif #endif /* __VFS_H */