libfuse

fuse.h
Go to the documentation of this file.
1 /*
2 FUSE: Filesystem in Userspace
3 Copyright (C) 2001-2007 Miklos Szeredi <miklos@szeredi.hu>
4
5 This program can be distributed under the terms of the GNU LGPLv2.
6 See the file COPYING.LIB.
7 */
8
9 #ifndef FUSE_H_
10 #define FUSE_H_
11
19 #include "fuse_common.h"
20
21 #include <fcntl.h>
22 #include <time.h>
23 #include <sys/types.h>
24 #include <sys/stat.h>
25 #include <sys/statvfs.h>
26 #include <sys/uio.h>
27
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
31
32 /* ----------------------------------------------------------- *
33 * Basic FUSE API *
34 * ----------------------------------------------------------- */
35
37 struct fuse;
38
42 enum fuse_readdir_flags {
51 FUSE_READDIR_PLUS = (1 << 0)
52 };
53
57 enum fuse_fill_dir_flags {
67 FUSE_FILL_DIR_PLUS = (1 << 1)
68 };
69
85 typedef int (*fuse_fill_dir_t) (void *buf, const char *name,
86 const struct stat *stbuf, off_t off,
87 enum fuse_fill_dir_flags flags);
96 struct fuse_config {
101 int set_gid;
102 unsigned int gid;
103
108 int set_uid;
109 unsigned int uid;
110
115 int set_mode;
116 unsigned int umask;
117
122 double entry_timeout;
123
132 double negative_timeout;
133
138 double attr_timeout;
139
143 int intr;
144
150 int intr_signal;
151
162 int remember;
163
180 int hard_remove;
181
193 int use_ino;
194
202 int readdir_ino;
203
221 int direct_io;
222
240 int kernel_cache;
241
248 int auto_cache;
249
255 int ac_attr_timeout_set;
256 double ac_attr_timeout;
257
268 int nullpath_ok;
269
274 int show_help;
275 char *modules;
276 int debug;
277 };
278
279
302 struct fuse_operations {
314 int (*getattr) (const char *, struct stat *, struct fuse_file_info *fi);
315
324 int (*readlink) (const char *, char *, size_t);
325
332 int (*mknod) (const char *, mode_t, dev_t);
333
340 int (*mkdir) (const char *, mode_t);
341
343 int (*unlink) (const char *);
344
346 int (*rmdir) (const char *);
347
349 int (*symlink) (const char *, const char *);
350
360 int (*rename) (const char *, const char *, unsigned int flags);
361
363 int (*link) (const char *, const char *);
364
370 int (*chmod) (const char *, mode_t, struct fuse_file_info *fi);
371
380 int (*chown) (const char *, uid_t, gid_t, struct fuse_file_info *fi);
381
390 int (*truncate) (const char *, off_t, struct fuse_file_info *fi);
391
439 int (*open) (const char *, struct fuse_file_info *);
440
450 int (*read) (const char *, char *, size_t, off_t,
451 struct fuse_file_info *);
452
462 int (*write) (const char *, const char *, size_t, off_t,
463 struct fuse_file_info *);
464
469 int (*statfs) (const char *, struct statvfs *);
470
499 int (*flush) (const char *, struct fuse_file_info *);
500
513 int (*release) (const char *, struct fuse_file_info *);
514
520 int (*fsync) (const char *, int, struct fuse_file_info *);
521
523 int (*setxattr) (const char *, const char *, const char *, size_t, int);
524
526 int (*getxattr) (const char *, const char *, char *, size_t);
527
529 int (*listxattr) (const char *, char *, size_t);
530
532 int (*removexattr) (const char *, const char *);
533
542 int (*opendir) (const char *, struct fuse_file_info *);
543
559 int (*readdir) (const char *, void *, fuse_fill_dir_t, off_t,
560 struct fuse_file_info *, enum fuse_readdir_flags);
561
564 int (*releasedir) (const char *, struct fuse_file_info *);
565
571 int (*fsyncdir) (const char *, int, struct fuse_file_info *);
572
581 void *(*init) (struct fuse_conn_info *conn,
582 struct fuse_config *cfg);
583
589 void (*destroy) (void *private_data);
590
600 int (*access) (const char *, int);
601
612 int (*create) (const char *, mode_t, struct fuse_file_info *);
613
644 int (*lock) (const char *, struct fuse_file_info *, int cmd,
645 struct flock *);
646
659 int (*utimens) (const char *, const struct timespec tv[2],
660 struct fuse_file_info *fi);
661
668 int (*bmap) (const char *, size_t blocksize, uint64_t *idx);
669
670 #if FUSE_USE_VERSION < 35
671 int (*ioctl) (const char *, int cmd, void *arg,
672 struct fuse_file_info *, unsigned int flags, void *data);
673 #else
674
690 int (*ioctl) (const char *, unsigned int cmd, void *arg,
691 struct fuse_file_info *, unsigned int flags, void *data);
692 #endif
693
709 int (*poll) (const char *, struct fuse_file_info *,
710 struct fuse_pollhandle *ph, unsigned *reventsp);
711
721 int (*write_buf) (const char *, struct fuse_bufvec *buf, off_t off,
722 struct fuse_file_info *);
723
738 int (*read_buf) (const char *, struct fuse_bufvec **bufp,
739 size_t size, off_t off, struct fuse_file_info *);
758 int (*flock) (const char *, struct fuse_file_info *, int op);
759
768 int (*fallocate) (const char *, int, off_t, off_t,
769 struct fuse_file_info *);
770
783 ssize_t (*copy_file_range) (const char *path_in,
784 struct fuse_file_info *fi_in,
785 off_t offset_in, const char *path_out,
786 struct fuse_file_info *fi_out,
787 off_t offset_out, size_t size, int flags);
788
792 off_t (*lseek) (const char *, off_t off, int whence, struct fuse_file_info *);
793 };
794
800 struct fuse_context {
802 struct fuse *fuse;
803
805 uid_t uid;
806
808 gid_t gid;
809
811 pid_t pid;
812
814 void *private_data;
815
817 mode_t umask;
818 };
819
874 /*
875 int fuse_main(int argc, char *argv[], const struct fuse_operations *op,
876 void *private_data);
877 */
878 #define fuse_main(argc, argv, op, private_data) \
879 fuse_main_real(argc, argv, op, sizeof(*(op)), private_data)
880
881 /* ----------------------------------------------------------- *
882 * More detailed API *
883 * ----------------------------------------------------------- */
884
896 void fuse_lib_help(struct fuse_args *args);
897
925 #if FUSE_USE_VERSION == 30
926 struct fuse *fuse_new_30(struct fuse_args *args, const struct fuse_operations *op,
927 size_t op_size, void *private_data);
928 #define fuse_new(args, op, size, data) fuse_new_30(args, op, size, data)
929 #else
930 struct fuse *fuse_new(struct fuse_args *args, const struct fuse_operations *op,
931 size_t op_size, void *private_data);
932 #endif
933
942 int fuse_mount(struct fuse *f, const char *mountpoint);
943
951 void fuse_unmount(struct fuse *f);
952
961 void fuse_destroy(struct fuse *f);
962
978 int fuse_loop(struct fuse *f);
979
988 void fuse_exit(struct fuse *f);
989
990 #if FUSE_USE_VERSION < 32
991 int fuse_loop_mt_31(struct fuse *f, int clone_fd);
992 #define fuse_loop_mt(f, clone_fd) fuse_loop_mt_31(f, clone_fd)
993 #else
994
1025 int fuse_loop_mt(struct fuse *f, struct fuse_loop_config *config);
1026 #endif
1027
1036 struct fuse_context *fuse_get_context(void);
1037
1056 int fuse_getgroups(int size, gid_t list[]);
1057
1063 int fuse_interrupted(void);
1064
1076 int fuse_invalidate_path(struct fuse *f, const char *path);
1077
1083 int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op,
1084 size_t op_size, void *private_data);
1085
1093 int fuse_start_cleanup_thread(struct fuse *fuse);
1094
1101 void fuse_stop_cleanup_thread(struct fuse *fuse);
1102
1112 int fuse_clean_cache(struct fuse *fuse);
1113
1114 /*
1115 * Stacking API
1116 */
1117
1123 struct fuse_fs;
1124
1125 /*
1126 * These functions call the relevant filesystem operation, and return
1127 * the result.
1128 *
1129 * If the operation is not defined, they return -ENOSYS, with the
1130 * exception of fuse_fs_open, fuse_fs_release, fuse_fs_opendir,
1131 * fuse_fs_releasedir and fuse_fs_statfs, which return 0.
1132 */
1133
1134 int fuse_fs_getattr(struct fuse_fs *fs, const char *path, struct stat *buf,
1135 struct fuse_file_info *fi);
1136 int fuse_fs_rename(struct fuse_fs *fs, const char *oldpath,
1137 const char *newpath, unsigned int flags);
1138 int fuse_fs_unlink(struct fuse_fs *fs, const char *path);
1139 int fuse_fs_rmdir(struct fuse_fs *fs, const char *path);
1140 int fuse_fs_symlink(struct fuse_fs *fs, const char *linkname,
1141 const char *path);
1142 int fuse_fs_link(struct fuse_fs *fs, const char *oldpath, const char *newpath);
1143 int fuse_fs_release(struct fuse_fs *fs, const char *path,
1144 struct fuse_file_info *fi);
1145 int fuse_fs_open(struct fuse_fs *fs, const char *path,
1146 struct fuse_file_info *fi);
1147 int fuse_fs_read(struct fuse_fs *fs, const char *path, char *buf, size_t size,
1148 off_t off, struct fuse_file_info *fi);
1149 int fuse_fs_read_buf(struct fuse_fs *fs, const char *path,
1150 struct fuse_bufvec **bufp, size_t size, off_t off,
1151 struct fuse_file_info *fi);
1152 int fuse_fs_write(struct fuse_fs *fs, const char *path, const char *buf,
1153 size_t size, off_t off, struct fuse_file_info *fi);
1154 int fuse_fs_write_buf(struct fuse_fs *fs, const char *path,
1155 struct fuse_bufvec *buf, off_t off,
1156 struct fuse_file_info *fi);
1157 int fuse_fs_fsync(struct fuse_fs *fs, const char *path, int datasync,
1158 struct fuse_file_info *fi);
1159 int fuse_fs_flush(struct fuse_fs *fs, const char *path,
1160 struct fuse_file_info *fi);
1161 int fuse_fs_statfs(struct fuse_fs *fs, const char *path, struct statvfs *buf);
1162 int fuse_fs_opendir(struct fuse_fs *fs, const char *path,
1163 struct fuse_file_info *fi);
1164 int fuse_fs_readdir(struct fuse_fs *fs, const char *path, void *buf,
1165 fuse_fill_dir_t filler, off_t off,
1166 struct fuse_file_info *fi, enum fuse_readdir_flags flags);
1167 int fuse_fs_fsyncdir(struct fuse_fs *fs, const char *path, int datasync,
1168 struct fuse_file_info *fi);
1169 int fuse_fs_releasedir(struct fuse_fs *fs, const char *path,
1170 struct fuse_file_info *fi);
1171 int fuse_fs_create(struct fuse_fs *fs, const char *path, mode_t mode,
1172 struct fuse_file_info *fi);
1173 int fuse_fs_lock(struct fuse_fs *fs, const char *path,
1174 struct fuse_file_info *fi, int cmd, struct flock *lock);
1175 int fuse_fs_flock(struct fuse_fs *fs, const char *path,
1176 struct fuse_file_info *fi, int op);
1177 int fuse_fs_chmod(struct fuse_fs *fs, const char *path, mode_t mode,
1178 struct fuse_file_info *fi);
1179 int fuse_fs_chown(struct fuse_fs *fs, const char *path, uid_t uid, gid_t gid,
1180 struct fuse_file_info *fi);
1181 int fuse_fs_truncate(struct fuse_fs *fs, const char *path, off_t size,
1182 struct fuse_file_info *fi);
1183 int fuse_fs_utimens(struct fuse_fs *fs, const char *path,
1184 const struct timespec tv[2], struct fuse_file_info *fi);
1185 int fuse_fs_access(struct fuse_fs *fs, const char *path, int mask);
1186 int fuse_fs_readlink(struct fuse_fs *fs, const char *path, char *buf,
1187 size_t len);
1188 int fuse_fs_mknod(struct fuse_fs *fs, const char *path, mode_t mode,
1189 dev_t rdev);
1190 int fuse_fs_mkdir(struct fuse_fs *fs, const char *path, mode_t mode);
1191 int fuse_fs_setxattr(struct fuse_fs *fs, const char *path, const char *name,
1192 const char *value, size_t size, int flags);
1193 int fuse_fs_getxattr(struct fuse_fs *fs, const char *path, const char *name,
1194 char *value, size_t size);
1195 int fuse_fs_listxattr(struct fuse_fs *fs, const char *path, char *list,
1196 size_t size);
1197 int fuse_fs_removexattr(struct fuse_fs *fs, const char *path,
1198 const char *name);
1199 int fuse_fs_bmap(struct fuse_fs *fs, const char *path, size_t blocksize,
1200 uint64_t *idx);
1201 #if FUSE_USE_VERSION < 35
1202 int fuse_fs_ioctl(struct fuse_fs *fs, const char *path, int cmd,
1203 void *arg, struct fuse_file_info *fi, unsigned int flags,
1204 void *data);
1205 #else
1206 int fuse_fs_ioctl(struct fuse_fs *fs, const char *path, unsigned int cmd,
1207 void *arg, struct fuse_file_info *fi, unsigned int flags,
1208 void *data);
1209 #endif
1210 int fuse_fs_poll(struct fuse_fs *fs, const char *path,
1211 struct fuse_file_info *fi, struct fuse_pollhandle *ph,
1212 unsigned *reventsp);
1213 int fuse_fs_fallocate(struct fuse_fs *fs, const char *path, int mode,
1214 off_t offset, off_t length, struct fuse_file_info *fi);
1215 ssize_t fuse_fs_copy_file_range(struct fuse_fs *fs, const char *path_in,
1216 struct fuse_file_info *fi_in, off_t off_in,
1217 const char *path_out,
1218 struct fuse_file_info *fi_out, off_t off_out,
1219 size_t len, int flags);
1220 off_t fuse_fs_lseek(struct fuse_fs *fs, const char *path, off_t off, int whence,
1221 struct fuse_file_info *fi);
1222 void fuse_fs_init(struct fuse_fs *fs, struct fuse_conn_info *conn,
1223 struct fuse_config *cfg);
1224 void fuse_fs_destroy(struct fuse_fs *fs);
1225
1226 int fuse_notify_poll(struct fuse_pollhandle *ph);
1227
1241 struct fuse_fs *fuse_fs_new(const struct fuse_operations *op, size_t op_size,
1242 void *private_data);
1243
1258 typedef struct fuse_fs *(*fuse_module_factory_t)(struct fuse_args *args,
1259 struct fuse_fs *fs[]);
1270 #define FUSE_REGISTER_MODULE(name_, factory_) \
1271 fuse_module_factory_t fuse_module_ ## name_ ## _factory = factory_
1272
1274 struct fuse_session *fuse_get_session(struct fuse *f);
1275
1284 int fuse_open_channel(const char *mountpoint, const char *options);
1285
1286 #ifdef __cplusplus
1287 }
1288 #endif
1289
1290 #endif /* FUSE_H_ */
fuse_unmount
void fuse_unmount(struct fuse *f)
Definition: fuse.c:5113
fuse_bufvec::off
size_t off
Definition: fuse_common.h:757
FUSE_READDIR_PLUS
Definition: fuse.h:51
fuse_conn_info
Definition: fuse_common.h:421
fuse_fill_dir_t
int(* fuse_fill_dir_t)(void *buf, const char *name, const struct stat *stbuf, off_t off, enum fuse_fill_dir_flags flags)
Definition: fuse.h:85
fuse_config::auto_cache
int auto_cache
Definition: fuse.h:248
fuse_open_channel
int fuse_open_channel(const char *mountpoint, const char *options)
Definition: helper.c:424
fuse_start_cleanup_thread
int fuse_start_cleanup_thread(struct fuse *fuse)
Definition: fuse.c:4859
fuse_config::set_gid
int set_gid
Definition: fuse.h:101
FUSE_FILL_DIR_PLUS
Definition: fuse.h:67
fuse_interrupted
int fuse_interrupted(void)
Definition: fuse.c:4626
fuse_getgroups
int fuse_getgroups(int size, gid_t list[])
Definition: fuse.c:4617
fuse_config::readdir_ino
int readdir_ino
Definition: fuse.h:202
fuse_config::intr
int intr
Definition: fuse.h:143
fuse_config::set_mode
int set_mode
Definition: fuse.h:115
fuse_get_session
struct fuse_session * fuse_get_session(struct fuse *f)
Definition: fuse.c:4509
fuse_get_context
struct fuse_context * fuse_get_context(void)
Definition: fuse.c:4607
fuse_context::fuse
struct fuse * fuse
Definition: fuse.h:802
fuse_config::nullpath_ok
int nullpath_ok
Definition: fuse.h:268
fuse_config::negative_timeout
double negative_timeout
Definition: fuse.h:132
fuse_common.h
fuse_file_info
Definition: fuse_common.h:44
fuse_loop_mt
int fuse_loop_mt(struct fuse *f, struct fuse_loop_config *config)
fuse_mount
int fuse_mount(struct fuse *f, const char *mountpoint)
Definition: fuse.c:5108
fuse_config::set_uid
int set_uid
Definition: fuse.h:108
fuse_config::remember
int remember
Definition: fuse.h:162
fuse_config::use_ino
int use_ino
Definition: fuse.h:193
fuse_operations
Definition: fuse.h:302
fuse_file_info::flags
int flags
Definition: fuse_common.h:46
fuse_bufvec
Definition: fuse_common.h:743
fuse_loop_config
Definition: fuse_common.h:107
fuse_clean_cache
int fuse_clean_cache(struct fuse *fuse)
Definition: fuse.c:4422
fuse_readdir_flags
fuse_readdir_flags
Definition: fuse.h:42
fuse_new
struct fuse * fuse_new(struct fuse_args *args, const struct fuse_operations *op, size_t op_size, void *private_data)
fuse_invalidate_path
int fuse_invalidate_path(struct fuse *f, const char *path)
Definition: fuse.c:4636
fuse_config::attr_timeout
double attr_timeout
Definition: fuse.h:138
fuse_fs_new
struct fuse_fs * fuse_fs_new(const struct fuse_operations *op, size_t op_size, void *private_data)
Definition: fuse.c:4811
fuse_config::direct_io
int direct_io
Definition: fuse.h:221
fuse_main_real
int fuse_main_real(int argc, char *argv[], const struct fuse_operations *op, size_t op_size, void *private_data)
Definition: helper.c:279
fuse_config::show_help
int show_help
Definition: fuse.h:274
fuse_loop
int fuse_loop(struct fuse *f)
Definition: fuse.c:4566
fuse_config
Definition: fuse.h:96
fuse_fill_dir_flags
fuse_fill_dir_flags
Definition: fuse.h:57
fuse_lib_help
void fuse_lib_help(struct fuse_args *args)
Definition: fuse.c:4701
fuse_context
Definition: fuse.h:800
fuse_config::ac_attr_timeout_set
int ac_attr_timeout_set
Definition: fuse.h:255
fuse_destroy
void fuse_destroy(struct fuse *f)
Definition: fuse.c:5058
fuse_bufvec::buf
struct fuse_buf buf[1]
Definition: fuse_common.h:762
fuse_args
Definition: fuse_opt.h:109
fuse_stop_cleanup_thread
void fuse_stop_cleanup_thread(struct fuse *fuse)
Definition: fuse.c:4867
fuse_config::entry_timeout
double entry_timeout
Definition: fuse.h:122
fuse_exit
void fuse_exit(struct fuse *f)
Definition: fuse.c:4602
fuse_context::private_data
void * private_data
Definition: fuse.h:814
fuse_config::kernel_cache
int kernel_cache
Definition: fuse.h:240
fuse_config::intr_signal
int intr_signal
Definition: fuse.h:150
fuse_config::hard_remove
int hard_remove
Definition: fuse.h:180