16 #include "fuse_kernel.h"
18 #include "fuse_misc.h"
19 #include "mount_util.h"
31 #ifndef F_LINUX_SPECIFIC_BASE
32 #define F_LINUX_SPECIFIC_BASE 1024
35 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
39 #define PARAM(inarg) (((char *)(inarg)) + sizeof(*(inarg)))
40 #define OFFSET_MAX 0x7fffffffffffffffLL
42 #define container_of(ptr, type, member) ({ \
43 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
44 (type *)( (char *)__mptr - offsetof(type,member) );})
46 struct fuse_pollhandle {
48 struct fuse_session *se;
51 static size_t pagesize;
53 static __attribute__((constructor))
void fuse_ll_init_pagesize(
void)
55 pagesize = getpagesize();
58 static void convert_stat(
const struct stat *stbuf,
struct fuse_attr *attr)
60 attr->ino = stbuf->st_ino;
61 attr->mode = stbuf->st_mode;
62 attr->nlink = stbuf->st_nlink;
63 attr->uid = stbuf->st_uid;
64 attr->gid = stbuf->st_gid;
65 attr->rdev = stbuf->st_rdev;
66 attr->size = stbuf->st_size;
67 attr->blksize = stbuf->st_blksize;
68 attr->blocks = stbuf->st_blocks;
69 attr->atime = stbuf->st_atime;
70 attr->mtime = stbuf->st_mtime;
71 attr->ctime = stbuf->st_ctime;
72 attr->atimensec = ST_ATIM_NSEC(stbuf);
73 attr->mtimensec = ST_MTIM_NSEC(stbuf);
74 attr->ctimensec = ST_CTIM_NSEC(stbuf);
77 static void convert_attr(
const struct fuse_setattr_in *attr,
struct stat *stbuf)
79 stbuf->st_mode = attr->mode;
80 stbuf->st_uid = attr->uid;
81 stbuf->st_gid = attr->gid;
82 stbuf->st_size = attr->size;
83 stbuf->st_atime = attr->atime;
84 stbuf->st_mtime = attr->mtime;
85 stbuf->st_ctime = attr->ctime;
86 ST_ATIM_NSEC_SET(stbuf, attr->atimensec);
87 ST_MTIM_NSEC_SET(stbuf, attr->mtimensec);
88 ST_CTIM_NSEC_SET(stbuf, attr->ctimensec);
91 static size_t iov_length(
const struct iovec *iov,
size_t count)
96 for (seg = 0; seg < count; seg++)
97 ret += iov[seg].iov_len;
101 static void list_init_req(
struct fuse_req *req)
107 static void list_del_req(
struct fuse_req *req)
109 struct fuse_req *prev = req->prev;
110 struct fuse_req *next = req->next;
115 static void list_add_req(
struct fuse_req *req,
struct fuse_req *next)
117 struct fuse_req *prev = next->prev;
126 assert(req->ch == NULL);
127 pthread_mutex_destroy(&req->lock);
134 struct fuse_session *se = req->se;
136 pthread_mutex_lock(&se->lock);
137 req->u.ni.func = NULL;
138 req->u.ni.data = NULL;
141 fuse_chan_put(req->ch);
143 pthread_mutex_unlock(&se->lock);
148 static struct fuse_req *fuse_ll_alloc_req(
struct fuse_session *se)
150 struct fuse_req *req;
152 req = (
struct fuse_req *) calloc(1,
sizeof(
struct fuse_req));
154 fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate request\n");
159 pthread_mutex_init(&req->lock, NULL);
166 static int fuse_send_msg(
struct fuse_session *se,
struct fuse_chan *ch,
167 struct iovec *iov,
int count)
169 struct fuse_out_header *out = iov[0].iov_base;
172 out->len = iov_length(iov, count);
174 if (out->unique == 0) {
175 fuse_log(FUSE_LOG_DEBUG,
"NOTIFY: code=%d length=%u\n",
176 out->error, out->len);
177 }
else if (out->error) {
179 " unique: %llu, error: %i (%s), outsize: %i\n",
180 (
unsigned long long) out->unique, out->error,
181 strerror(-out->error), out->len);
184 " unique: %llu, success, outsize: %i\n",
185 (
unsigned long long) out->unique, out->len);
189 ssize_t res = writev(ch ? ch->fd : se->fd,
196 perror(
"fuse: writing device");
204 int fuse_send_reply_iov_nofree(
fuse_req_t req,
int error,
struct iovec *iov,
207 struct fuse_out_header out;
209 if (error <= -1000 || error > 0) {
210 fuse_log(FUSE_LOG_ERR,
"fuse: bad error value: %i\n", error);
214 out.unique = req->unique;
217 iov[0].iov_base = &out;
218 iov[0].iov_len =
sizeof(
struct fuse_out_header);
220 return fuse_send_msg(req->se, req->ch, iov, count);
223 static int send_reply_iov(
fuse_req_t req,
int error,
struct iovec *iov,
228 res = fuse_send_reply_iov_nofree(req, error, iov, count);
233 static int send_reply(
fuse_req_t req,
int error,
const void *arg,
239 iov[1].iov_base = (
void *) arg;
240 iov[1].iov_len = argsize;
243 return send_reply_iov(req, error, iov, count);
249 struct iovec *padded_iov;
251 padded_iov = malloc((count + 1) *
sizeof(
struct iovec));
252 if (padded_iov == NULL)
255 memcpy(padded_iov + 1, iov, count *
sizeof(
struct iovec));
258 res = send_reply_iov(req, 0, padded_iov, count);
268 const char *name,
const struct stat *stbuf, off_t off)
273 size_t entlen_padded;
274 struct fuse_dirent *dirent;
276 namelen = strlen(name);
277 entlen = FUSE_NAME_OFFSET + namelen;
278 entlen_padded = FUSE_DIRENT_ALIGN(entlen);
280 if ((buf == NULL) || (entlen_padded > bufsize))
281 return entlen_padded;
283 dirent = (
struct fuse_dirent*) buf;
284 dirent->ino = stbuf->st_ino;
286 dirent->namelen = namelen;
287 dirent->type = (stbuf->st_mode & S_IFMT) >> 12;
288 memcpy(dirent->name, name, namelen);
289 memset(dirent->name + namelen, 0, entlen_padded - entlen);
291 return entlen_padded;
294 static void convert_statfs(
const struct statvfs *stbuf,
295 struct fuse_kstatfs *kstatfs)
297 kstatfs->bsize = stbuf->f_bsize;
298 kstatfs->frsize = stbuf->f_frsize;
299 kstatfs->blocks = stbuf->f_blocks;
300 kstatfs->bfree = stbuf->f_bfree;
301 kstatfs->bavail = stbuf->f_bavail;
302 kstatfs->files = stbuf->f_files;
303 kstatfs->ffree = stbuf->f_ffree;
304 kstatfs->namelen = stbuf->f_namemax;
307 static int send_reply_ok(
fuse_req_t req,
const void *arg,
size_t argsize)
309 return send_reply(req, 0, arg, argsize);
314 return send_reply(req, -err, NULL, 0);
322 static unsigned long calc_timeout_sec(
double t)
324 if (t > (
double) ULONG_MAX)
329 return (
unsigned long) t;
332 static unsigned int calc_timeout_nsec(
double t)
334 double f = t - (double) calc_timeout_sec(t);
337 else if (f >= 0.999999999)
340 return (
unsigned int) (f * 1.0e9);
343 static void fill_entry(
struct fuse_entry_out *arg,
346 arg->nodeid = e->
ino;
351 arg->attr_valid_nsec = calc_timeout_nsec(e->
attr_timeout);
352 convert_stat(&e->
attr, &arg->attr);
364 size_t entlen_padded;
366 namelen = strlen(name);
367 entlen = FUSE_NAME_OFFSET_DIRENTPLUS + namelen;
368 entlen_padded = FUSE_DIRENT_ALIGN(entlen);
369 if ((buf == NULL) || (entlen_padded > bufsize))
370 return entlen_padded;
372 struct fuse_direntplus *dp = (
struct fuse_direntplus *) buf;
373 memset(&dp->entry_out, 0,
sizeof(dp->entry_out));
374 fill_entry(&dp->entry_out, e);
376 struct fuse_dirent *dirent = &dp->dirent;
377 dirent->ino = e->
attr.st_ino;
379 dirent->namelen = namelen;
380 dirent->type = (e->
attr.st_mode & S_IFMT) >> 12;
381 memcpy(dirent->name, name, namelen);
382 memset(dirent->name + namelen, 0, entlen_padded - entlen);
384 return entlen_padded;
387 static void fill_open(
struct fuse_open_out *arg,
392 arg->open_flags |= FOPEN_DIRECT_IO;
394 arg->open_flags |= FOPEN_KEEP_CACHE;
396 arg->open_flags |= FOPEN_CACHE_DIR;
398 arg->open_flags |= FOPEN_NONSEEKABLE;
400 arg->open_flags |= FOPEN_NOFLUSH;
405 struct fuse_entry_out arg;
406 size_t size = req->se->conn.proto_minor < 9 ?
407 FUSE_COMPAT_ENTRY_OUT_SIZE :
sizeof(arg);
411 if (!e->
ino && req->se->conn.proto_minor < 4)
414 memset(&arg, 0,
sizeof(arg));
416 return send_reply_ok(req, &arg, size);
422 char buf[
sizeof(
struct fuse_entry_out) + sizeof(struct fuse_open_out)];
423 size_t entrysize = req->se->conn.proto_minor < 9 ?
424 FUSE_COMPAT_ENTRY_OUT_SIZE :
sizeof(
struct fuse_entry_out);
425 struct fuse_entry_out *earg = (
struct fuse_entry_out *) buf;
426 struct fuse_open_out *oarg = (
struct fuse_open_out *) (buf + entrysize);
428 memset(buf, 0,
sizeof(buf));
431 return send_reply_ok(req, buf,
432 entrysize +
sizeof(
struct fuse_open_out));
438 struct fuse_attr_out arg;
439 size_t size = req->se->conn.proto_minor < 9 ?
440 FUSE_COMPAT_ATTR_OUT_SIZE :
sizeof(arg);
442 memset(&arg, 0,
sizeof(arg));
443 arg.attr_valid = calc_timeout_sec(attr_timeout);
444 arg.attr_valid_nsec = calc_timeout_nsec(attr_timeout);
445 convert_stat(attr, &arg.attr);
447 return send_reply_ok(req, &arg, size);
452 return send_reply_ok(req, linkname, strlen(linkname));
457 struct fuse_open_out arg;
459 memset(&arg, 0,
sizeof(arg));
461 return send_reply_ok(req, &arg,
sizeof(arg));
466 struct fuse_write_out arg;
468 memset(&arg, 0,
sizeof(arg));
471 return send_reply_ok(req, &arg,
sizeof(arg));
476 return send_reply_ok(req, buf, size);
479 static int fuse_send_data_iov_fallback(
struct fuse_session *se,
480 struct fuse_chan *ch,
481 struct iovec *iov,
int iov_count,
485 struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len);
490 if (
buf->count == 1 &&
buf->idx == 0 &&
buf->off == 0 &&
495 iov[iov_count].iov_base =
buf->buf[0].
mem;
496 iov[iov_count].iov_len = len;
498 return fuse_send_msg(se, ch, iov, iov_count);
501 res = posix_memalign(&mbuf, pagesize, len);
505 mem_buf.
buf[0].
mem = mbuf;
513 iov[iov_count].iov_base = mbuf;
514 iov[iov_count].iov_len = len;
516 res = fuse_send_msg(se, ch, iov, iov_count);
522 struct fuse_ll_pipe {
528 static void fuse_ll_pipe_free(
struct fuse_ll_pipe *llp)
536 #if !defined(HAVE_PIPE2) || !defined(O_CLOEXEC)
537 static int fuse_pipe(
int fds[2])
544 if (fcntl(fds[0], F_SETFL, O_NONBLOCK) == -1 ||
545 fcntl(fds[1], F_SETFL, O_NONBLOCK) == -1 ||
546 fcntl(fds[0], F_SETFD, FD_CLOEXEC) == -1 ||
547 fcntl(fds[1], F_SETFD, FD_CLOEXEC) == -1) {
555 static int fuse_pipe(
int fds[2])
557 return pipe2(fds, O_CLOEXEC | O_NONBLOCK);
561 static struct fuse_ll_pipe *fuse_ll_get_pipe(
struct fuse_session *se)
563 struct fuse_ll_pipe *llp = pthread_getspecific(se->pipe_key);
567 llp = malloc(
sizeof(
struct fuse_ll_pipe));
571 res = fuse_pipe(llp->pipe);
580 llp->size = pagesize * 16;
583 pthread_setspecific(se->pipe_key, llp);
590 static void fuse_ll_clear_pipe(
struct fuse_session *se)
592 struct fuse_ll_pipe *llp = pthread_getspecific(se->pipe_key);
594 pthread_setspecific(se->pipe_key, NULL);
595 fuse_ll_pipe_free(llp);
599 #if defined(HAVE_SPLICE) && defined(HAVE_VMSPLICE)
600 static int read_back(
int fd,
char *buf,
size_t len)
604 res = read(fd, buf, len);
606 fuse_log(FUSE_LOG_ERR,
"fuse: internal error: failed to read back from pipe: %s\n", strerror(errno));
610 fuse_log(FUSE_LOG_ERR,
"fuse: internal error: short read back from pipe: %i from %zi\n", res, len);
616 static int grow_pipe_to_max(
int pipefd)
623 maxfd = open(
"/proc/sys/fs/pipe-max-size", O_RDONLY);
627 res = read(maxfd, buf,
sizeof(buf) - 1);
639 res = fcntl(pipefd, F_SETPIPE_SZ, max);
645 static int fuse_send_data_iov(
struct fuse_session *se,
struct fuse_chan *ch,
646 struct iovec *iov,
int iov_count,
651 struct fuse_out_header *out = iov[0].iov_base;
652 struct fuse_ll_pipe *llp;
655 size_t total_buf_size;
658 struct fuse_bufvec pipe_buf = FUSE_BUFVEC_INIT(len);
660 if (se->broken_splice_nonblock)
670 total_buf_size -=
buf->off;
672 if (total_buf_size < 2 * pagesize)
675 if (se->conn.proto_minor < 14 ||
679 llp = fuse_ll_get_pipe(se);
684 headerlen = iov_length(iov, iov_count);
686 out->len = headerlen + len;
692 pipesize = pagesize * (iov_count +
buf->count + 1) + out->len;
694 if (llp->size < pipesize) {
696 res = fcntl(llp->pipe[0], F_SETPIPE_SZ, pipesize);
698 res = grow_pipe_to_max(llp->pipe[0]);
706 if (llp->size < pipesize)
711 res = vmsplice(llp->pipe[1], iov, iov_count, SPLICE_F_NONBLOCK);
715 if (res != headerlen) {
717 fuse_log(FUSE_LOG_ERR,
"fuse: short vmsplice to pipe: %u/%zu\n", res,
723 pipe_buf.
buf[0].
fd = llp->pipe[1];
728 if (res == -EAGAIN || res == -EINVAL) {
740 se->broken_splice_nonblock = 1;
742 pthread_setspecific(se->pipe_key, NULL);
743 fuse_ll_pipe_free(llp);
750 if (res != 0 && res < len) {
751 struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len);
753 size_t now_len = res;
763 res = posix_memalign(&mbuf, pagesize, len);
767 mem_buf.
buf[0].
mem = mbuf;
768 mem_buf.
off = now_len;
772 size_t extra_len = res;
778 tmpbuf = malloc(headerlen);
779 if (tmpbuf == NULL) {
784 res = read_back(llp->pipe[0], tmpbuf, headerlen);
790 res = read_back(llp->pipe[0], mbuf, now_len);
795 len = now_len + extra_len;
796 iov[iov_count].iov_base = mbuf;
797 iov[iov_count].iov_len = len;
799 res = fuse_send_msg(se, ch, iov, iov_count);
807 out->len = headerlen + len;
811 " unique: %llu, success, outsize: %i (splice)\n",
812 (
unsigned long long) out->unique, out->len);
818 splice_flags |= SPLICE_F_MOVE;
820 res = splice(llp->pipe[0], NULL, ch ? ch->fd : se->fd,
821 NULL, out->len, splice_flags);
824 perror(
"fuse: splice from pipe");
827 if (res != out->len) {
829 fuse_log(FUSE_LOG_ERR,
"fuse: short splice from pipe: %u/%u\n",
836 fuse_ll_clear_pipe(se);
840 return fuse_send_data_iov_fallback(se, ch, iov, iov_count,
buf, len);
843 static int fuse_send_data_iov(
struct fuse_session *se,
struct fuse_chan *ch,
844 struct iovec *iov,
int iov_count,
850 return fuse_send_data_iov_fallback(se, ch, iov, iov_count,
buf, len);
858 struct fuse_out_header out;
861 iov[0].iov_base = &out;
862 iov[0].iov_len =
sizeof(
struct fuse_out_header);
864 out.unique = req->unique;
867 res = fuse_send_data_iov(req->se, req->ch, iov, 1, bufv, flags);
878 struct fuse_statfs_out arg;
879 size_t size = req->se->conn.proto_minor < 4 ?
880 FUSE_COMPAT_STATFS_SIZE :
sizeof(arg);
882 memset(&arg, 0,
sizeof(arg));
883 convert_statfs(stbuf, &arg.st);
885 return send_reply_ok(req, &arg, size);
890 struct fuse_getxattr_out arg;
892 memset(&arg, 0,
sizeof(arg));
895 return send_reply_ok(req, &arg,
sizeof(arg));
900 struct fuse_lk_out arg;
902 memset(&arg, 0,
sizeof(arg));
903 arg.lk.type = lock->l_type;
904 if (lock->l_type != F_UNLCK) {
905 arg.lk.start = lock->l_start;
906 if (lock->l_len == 0)
907 arg.lk.end = OFFSET_MAX;
909 arg.lk.end = lock->l_start + lock->l_len - 1;
911 arg.lk.pid = lock->l_pid;
912 return send_reply_ok(req, &arg,
sizeof(arg));
917 struct fuse_bmap_out arg;
919 memset(&arg, 0,
sizeof(arg));
922 return send_reply_ok(req, &arg,
sizeof(arg));
925 static struct fuse_ioctl_iovec *fuse_ioctl_iovec_copy(
const struct iovec *iov,
928 struct fuse_ioctl_iovec *fiov;
931 fiov = malloc(
sizeof(fiov[0]) * count);
935 for (i = 0; i < count; i++) {
936 fiov[i].base = (uintptr_t) iov[i].iov_base;
937 fiov[i].len = iov[i].iov_len;
944 const struct iovec *in_iov,
size_t in_count,
945 const struct iovec *out_iov,
size_t out_count)
947 struct fuse_ioctl_out arg;
948 struct fuse_ioctl_iovec *in_fiov = NULL;
949 struct fuse_ioctl_iovec *out_fiov = NULL;
954 memset(&arg, 0,
sizeof(arg));
955 arg.flags |= FUSE_IOCTL_RETRY;
956 arg.in_iovs = in_count;
957 arg.out_iovs = out_count;
958 iov[count].iov_base = &arg;
959 iov[count].iov_len =
sizeof(arg);
962 if (req->se->conn.proto_minor < 16) {
964 iov[count].iov_base = (
void *)in_iov;
965 iov[count].iov_len =
sizeof(in_iov[0]) * in_count;
970 iov[count].iov_base = (
void *)out_iov;
971 iov[count].iov_len =
sizeof(out_iov[0]) * out_count;
976 if (
sizeof(
void *) == 4 && req->ioctl_64bit) {
982 in_fiov = fuse_ioctl_iovec_copy(in_iov, in_count);
986 iov[count].iov_base = (
void *)in_fiov;
987 iov[count].iov_len =
sizeof(in_fiov[0]) * in_count;
991 out_fiov = fuse_ioctl_iovec_copy(out_iov, out_count);
995 iov[count].iov_base = (
void *)out_fiov;
996 iov[count].iov_len =
sizeof(out_fiov[0]) * out_count;
1001 res = send_reply_iov(req, 0, iov, count);
1015 struct fuse_ioctl_out arg;
1016 struct iovec iov[3];
1019 memset(&arg, 0,
sizeof(arg));
1020 arg.result = result;
1021 iov[count].iov_base = &arg;
1022 iov[count].iov_len =
sizeof(arg);
1026 iov[count].iov_base = (
char *) buf;
1027 iov[count].iov_len = size;
1031 return send_reply_iov(req, 0, iov, count);
1037 struct iovec *padded_iov;
1038 struct fuse_ioctl_out arg;
1041 padded_iov = malloc((count + 2) *
sizeof(
struct iovec));
1042 if (padded_iov == NULL)
1045 memset(&arg, 0,
sizeof(arg));
1046 arg.result = result;
1047 padded_iov[1].iov_base = &arg;
1048 padded_iov[1].iov_len =
sizeof(arg);
1050 memcpy(&padded_iov[2], iov, count *
sizeof(
struct iovec));
1052 res = send_reply_iov(req, 0, padded_iov, count + 2);
1060 struct fuse_poll_out arg;
1062 memset(&arg, 0,
sizeof(arg));
1063 arg.revents = revents;
1065 return send_reply_ok(req, &arg,
sizeof(arg));
1070 struct fuse_lseek_out arg;
1072 memset(&arg, 0,
sizeof(arg));
1075 return send_reply_ok(req, &arg,
sizeof(arg));
1080 char *name = (
char *) inarg;
1082 if (req->se->op.lookup)
1083 req->se->op.lookup(req, nodeid, name);
1090 struct fuse_forget_in *arg = (
struct fuse_forget_in *) inarg;
1092 if (req->se->op.forget)
1093 req->se->op.forget(req, nodeid, arg->nlookup);
1101 struct fuse_batch_forget_in *arg = (
void *) inarg;
1102 struct fuse_forget_one *param = (
void *) PARAM(arg);
1107 if (req->se->op.forget_multi) {
1108 req->se->op.forget_multi(req, arg->count,
1109 (
struct fuse_forget_data *) param);
1110 }
else if (req->se->op.forget) {
1111 for (i = 0; i < arg->count; i++) {
1112 struct fuse_forget_one *forget = ¶m[i];
1113 struct fuse_req *dummy_req;
1115 dummy_req = fuse_ll_alloc_req(req->se);
1116 if (dummy_req == NULL)
1119 dummy_req->unique = req->unique;
1120 dummy_req->ctx = req->ctx;
1121 dummy_req->ch = NULL;
1123 req->se->op.forget(dummy_req, forget->nodeid,
1137 if (req->se->conn.proto_minor >= 9) {
1138 struct fuse_getattr_in *arg = (
struct fuse_getattr_in *) inarg;
1140 if (arg->getattr_flags & FUSE_GETATTR_FH) {
1141 memset(&fi, 0,
sizeof(fi));
1147 if (req->se->op.getattr)
1148 req->se->op.getattr(req, nodeid, fip);
1155 struct fuse_setattr_in *arg = (
struct fuse_setattr_in *) inarg;
1157 if (req->se->op.setattr) {
1161 memset(&stbuf, 0,
sizeof(stbuf));
1162 convert_attr(arg, &stbuf);
1163 if (arg->valid & FATTR_FH) {
1164 arg->valid &= ~FATTR_FH;
1165 memset(&fi_store, 0,
sizeof(fi_store));
1170 FUSE_SET_ATTR_MODE |
1173 FUSE_SET_ATTR_SIZE |
1174 FUSE_SET_ATTR_ATIME |
1175 FUSE_SET_ATTR_MTIME |
1176 FUSE_SET_ATTR_ATIME_NOW |
1177 FUSE_SET_ATTR_MTIME_NOW |
1178 FUSE_SET_ATTR_CTIME;
1180 req->se->op.setattr(req, nodeid, &stbuf, arg->valid, fi);
1187 struct fuse_access_in *arg = (
struct fuse_access_in *) inarg;
1189 if (req->se->op.access)
1190 req->se->op.access(req, nodeid, arg->mask);
1199 if (req->se->op.readlink)
1200 req->se->op.readlink(req, nodeid);
1207 struct fuse_mknod_in *arg = (
struct fuse_mknod_in *) inarg;
1208 char *name = PARAM(arg);
1210 if (req->se->conn.proto_minor >= 12)
1211 req->ctx.umask = arg->umask;
1213 name = (
char *) inarg + FUSE_COMPAT_MKNOD_IN_SIZE;
1215 if (req->se->op.mknod)
1216 req->se->op.mknod(req, nodeid, name, arg->mode, arg->rdev);
1223 struct fuse_mkdir_in *arg = (
struct fuse_mkdir_in *) inarg;
1225 if (req->se->conn.proto_minor >= 12)
1226 req->ctx.umask = arg->umask;
1228 if (req->se->op.mkdir)
1229 req->se->op.mkdir(req, nodeid, PARAM(arg), arg->mode);
1236 char *name = (
char *) inarg;
1238 if (req->se->op.unlink)
1239 req->se->op.unlink(req, nodeid, name);
1246 char *name = (
char *) inarg;
1248 if (req->se->op.rmdir)
1249 req->se->op.rmdir(req, nodeid, name);
1256 char *name = (
char *) inarg;
1257 char *linkname = ((
char *) inarg) + strlen((
char *) inarg) + 1;
1259 if (req->se->op.symlink)
1260 req->se->op.symlink(req, linkname, nodeid, name);
1267 struct fuse_rename_in *arg = (
struct fuse_rename_in *) inarg;
1268 char *oldname = PARAM(arg);
1269 char *newname = oldname + strlen(oldname) + 1;
1271 if (req->se->op.rename)
1272 req->se->op.rename(req, nodeid, oldname, arg->newdir, newname,
1280 struct fuse_rename2_in *arg = (
struct fuse_rename2_in *) inarg;
1281 char *oldname = PARAM(arg);
1282 char *newname = oldname + strlen(oldname) + 1;
1284 if (req->se->op.rename)
1285 req->se->op.rename(req, nodeid, oldname, arg->newdir, newname,
1293 struct fuse_link_in *arg = (
struct fuse_link_in *) inarg;
1295 if (req->se->op.link)
1296 req->se->op.link(req, arg->oldnodeid, nodeid, PARAM(arg));
1303 struct fuse_create_in *arg = (
struct fuse_create_in *) inarg;
1305 if (req->se->op.create) {
1307 char *name = PARAM(arg);
1309 memset(&fi, 0,
sizeof(fi));
1310 fi.
flags = arg->flags;
1312 if (req->se->conn.proto_minor >= 12)
1313 req->ctx.umask = arg->umask;
1315 name = (
char *) inarg +
sizeof(
struct fuse_open_in);
1317 req->se->op.create(req, nodeid, name, arg->mode, &fi);
1324 struct fuse_open_in *arg = (
struct fuse_open_in *) inarg;
1327 memset(&fi, 0,
sizeof(fi));
1328 fi.
flags = arg->flags;
1330 if (req->se->op.open)
1331 req->se->op.open(req, nodeid, &fi);
1338 struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
1340 if (req->se->op.read) {
1343 memset(&fi, 0,
sizeof(fi));
1345 if (req->se->conn.proto_minor >= 9) {
1347 fi.
flags = arg->flags;
1349 req->se->op.read(req, nodeid, arg->size, arg->offset, &fi);
1356 struct fuse_write_in *arg = (
struct fuse_write_in *) inarg;
1360 memset(&fi, 0,
sizeof(fi));
1362 fi.
writepage = (arg->write_flags & FUSE_WRITE_CACHE) != 0;
1364 if (req->se->conn.proto_minor < 9) {
1365 param = ((
char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE;
1368 fi.
flags = arg->flags;
1372 if (req->se->op.write)
1373 req->se->op.write(req, nodeid, param, arg->size,
1382 struct fuse_session *se = req->se;
1387 struct fuse_write_in *arg = (
struct fuse_write_in *) inarg;
1390 memset(&fi, 0,
sizeof(fi));
1392 fi.
writepage = arg->write_flags & FUSE_WRITE_CACHE;
1394 if (se->conn.proto_minor < 9) {
1395 bufv.
buf[0].
mem = ((
char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE;
1396 bufv.
buf[0].
size -=
sizeof(
struct fuse_in_header) +
1397 FUSE_COMPAT_WRITE_IN_SIZE;
1401 fi.
flags = arg->flags;
1403 bufv.
buf[0].
mem = PARAM(arg);
1405 bufv.
buf[0].
size -=
sizeof(
struct fuse_in_header) +
1406 sizeof(struct fuse_write_in);
1408 if (bufv.
buf[0].
size < arg->size) {
1409 fuse_log(FUSE_LOG_ERR,
"fuse: do_write_buf: buffer size too small\n");
1415 se->op.write_buf(req, nodeid, &bufv, arg->offset, &fi);
1420 fuse_ll_clear_pipe(se);
1425 struct fuse_flush_in *arg = (
struct fuse_flush_in *) inarg;
1428 memset(&fi, 0,
sizeof(fi));
1431 if (req->se->conn.proto_minor >= 7)
1434 if (req->se->op.flush)
1435 req->se->op.flush(req, nodeid, &fi);
1442 struct fuse_release_in *arg = (
struct fuse_release_in *) inarg;
1445 memset(&fi, 0,
sizeof(fi));
1446 fi.
flags = arg->flags;
1448 if (req->se->conn.proto_minor >= 8) {
1449 fi.
flush = (arg->release_flags & FUSE_RELEASE_FLUSH) ? 1 : 0;
1452 if (arg->release_flags & FUSE_RELEASE_FLOCK_UNLOCK) {
1453 fi.flock_release = 1;
1457 if (req->se->op.release)
1458 req->se->op.release(req, nodeid, &fi);
1465 struct fuse_fsync_in *arg = (
struct fuse_fsync_in *) inarg;
1467 int datasync = arg->fsync_flags & 1;
1469 memset(&fi, 0,
sizeof(fi));
1472 if (req->se->op.fsync)
1473 req->se->op.fsync(req, nodeid, datasync, &fi);
1480 struct fuse_open_in *arg = (
struct fuse_open_in *) inarg;
1483 memset(&fi, 0,
sizeof(fi));
1484 fi.
flags = arg->flags;
1486 if (req->se->op.opendir)
1487 req->se->op.opendir(req, nodeid, &fi);
1494 struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
1497 memset(&fi, 0,
sizeof(fi));
1500 if (req->se->op.readdir)
1501 req->se->op.readdir(req, nodeid, arg->size, arg->offset, &fi);
1508 struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
1511 memset(&fi, 0,
sizeof(fi));
1514 if (req->se->op.readdirplus)
1515 req->se->op.readdirplus(req, nodeid, arg->size, arg->offset, &fi);
1522 struct fuse_release_in *arg = (
struct fuse_release_in *) inarg;
1525 memset(&fi, 0,
sizeof(fi));
1526 fi.
flags = arg->flags;
1529 if (req->se->op.releasedir)
1530 req->se->op.releasedir(req, nodeid, &fi);
1537 struct fuse_fsync_in *arg = (
struct fuse_fsync_in *) inarg;
1539 int datasync = arg->fsync_flags & 1;
1541 memset(&fi, 0,
sizeof(fi));
1544 if (req->se->op.fsyncdir)
1545 req->se->op.fsyncdir(req, nodeid, datasync, &fi);
1555 if (req->se->op.statfs)
1556 req->se->op.statfs(req, nodeid);
1558 struct statvfs buf = {
1568 struct fuse_setxattr_in *arg = (
struct fuse_setxattr_in *) inarg;
1569 char *name = PARAM(arg);
1570 char *value = name + strlen(name) + 1;
1572 if (req->se->op.setxattr)
1573 req->se->op.setxattr(req, nodeid, name, value, arg->size,
1581 struct fuse_getxattr_in *arg = (
struct fuse_getxattr_in *) inarg;
1583 if (req->se->op.getxattr)
1584 req->se->op.getxattr(req, nodeid, PARAM(arg), arg->size);
1591 struct fuse_getxattr_in *arg = (
struct fuse_getxattr_in *) inarg;
1593 if (req->se->op.listxattr)
1594 req->se->op.listxattr(req, nodeid, arg->size);
1601 char *name = (
char *) inarg;
1603 if (req->se->op.removexattr)
1604 req->se->op.removexattr(req, nodeid, name);
1609 static void convert_fuse_file_lock(
struct fuse_file_lock *fl,
1610 struct flock *flock)
1612 memset(flock, 0,
sizeof(
struct flock));
1613 flock->l_type = fl->type;
1614 flock->l_whence = SEEK_SET;
1615 flock->l_start = fl->start;
1616 if (fl->end == OFFSET_MAX)
1619 flock->l_len = fl->end - fl->start + 1;
1620 flock->l_pid = fl->pid;
1625 struct fuse_lk_in *arg = (
struct fuse_lk_in *) inarg;
1629 memset(&fi, 0,
sizeof(fi));
1633 convert_fuse_file_lock(&arg->lk, &flock);
1634 if (req->se->op.getlk)
1635 req->se->op.getlk(req, nodeid, &fi, &flock);
1641 const void *inarg,
int sleep)
1643 struct fuse_lk_in *arg = (
struct fuse_lk_in *) inarg;
1647 memset(&fi, 0,
sizeof(fi));
1651 if (arg->lk_flags & FUSE_LK_FLOCK) {
1654 switch (arg->lk.type) {
1668 if (req->se->op.flock)
1669 req->se->op.flock(req, nodeid, &fi, op);
1673 convert_fuse_file_lock(&arg->lk, &flock);
1674 if (req->se->op.setlk)
1675 req->se->op.setlk(req, nodeid, &fi, &flock, sleep);
1683 do_setlk_common(req, nodeid, inarg, 0);
1688 do_setlk_common(req, nodeid, inarg, 1);
1691 static int find_interrupted(
struct fuse_session *se,
struct fuse_req *req)
1693 struct fuse_req *curr;
1695 for (curr = se->list.next; curr != &se->list; curr = curr->next) {
1696 if (curr->unique == req->u.i.unique) {
1701 pthread_mutex_unlock(&se->lock);
1704 pthread_mutex_lock(&curr->lock);
1705 pthread_mutex_lock(&se->lock);
1706 curr->interrupted = 1;
1707 func = curr->u.ni.func;
1708 data = curr->u.ni.data;
1709 pthread_mutex_unlock(&se->lock);
1712 pthread_mutex_unlock(&curr->lock);
1714 pthread_mutex_lock(&se->lock);
1717 fuse_chan_put(req->ch);
1725 for (curr = se->interrupts.next; curr != &se->interrupts;
1726 curr = curr->next) {
1727 if (curr->u.i.unique == req->u.i.unique)
1735 struct fuse_interrupt_in *arg = (
struct fuse_interrupt_in *) inarg;
1736 struct fuse_session *se = req->se;
1740 fuse_log(FUSE_LOG_DEBUG,
"INTERRUPT: %llu\n",
1741 (
unsigned long long) arg->unique);
1743 req->u.i.unique = arg->unique;
1745 pthread_mutex_lock(&se->lock);
1746 if (find_interrupted(se, req)) {
1747 fuse_chan_put(req->ch);
1751 list_add_req(req, &se->interrupts);
1752 pthread_mutex_unlock(&se->lock);
1755 static struct fuse_req *check_interrupt(
struct fuse_session *se,
1756 struct fuse_req *req)
1758 struct fuse_req *curr;
1760 for (curr = se->interrupts.next; curr != &se->interrupts;
1761 curr = curr->next) {
1762 if (curr->u.i.unique == req->unique) {
1763 req->interrupted = 1;
1765 fuse_chan_put(curr->ch);
1771 curr = se->interrupts.next;
1772 if (curr != &se->interrupts) {
1774 list_init_req(curr);
1782 struct fuse_bmap_in *arg = (
struct fuse_bmap_in *) inarg;
1784 if (req->se->op.bmap)
1785 req->se->op.bmap(req, nodeid, arg->blocksize, arg->block);
1792 struct fuse_ioctl_in *arg = (
struct fuse_ioctl_in *) inarg;
1793 unsigned int flags = arg->flags;
1794 void *in_buf = arg->in_size ? PARAM(arg) : NULL;
1797 if (
flags & FUSE_IOCTL_DIR &&
1803 memset(&fi, 0,
sizeof(fi));
1806 if (
sizeof(
void *) == 4 && req->se->conn.proto_minor >= 16 &&
1807 !(
flags & FUSE_IOCTL_32BIT)) {
1808 req->ioctl_64bit = 1;
1811 if (req->se->op.ioctl)
1812 req->se->op.ioctl(req, nodeid, arg->cmd,
1813 (
void *)(uintptr_t)arg->arg, &fi,
flags,
1814 in_buf, arg->in_size, arg->out_size);
1826 struct fuse_poll_in *arg = (
struct fuse_poll_in *) inarg;
1829 memset(&fi, 0,
sizeof(fi));
1833 if (req->se->op.poll) {
1834 struct fuse_pollhandle *ph = NULL;
1836 if (arg->flags & FUSE_POLL_SCHEDULE_NOTIFY) {
1837 ph = malloc(
sizeof(
struct fuse_pollhandle));
1846 req->se->op.poll(req, nodeid, &fi, ph);
1854 struct fuse_fallocate_in *arg = (
struct fuse_fallocate_in *) inarg;
1857 memset(&fi, 0,
sizeof(fi));
1860 if (req->se->op.fallocate)
1861 req->se->op.fallocate(req, nodeid, arg->mode, arg->offset, arg->length, &fi);
1868 struct fuse_copy_file_range_in *arg = (
struct fuse_copy_file_range_in *) inarg;
1871 memset(&fi_in, 0,
sizeof(fi_in));
1872 fi_in.fh = arg->fh_in;
1874 memset(&fi_out, 0,
sizeof(fi_out));
1875 fi_out.fh = arg->fh_out;
1878 if (req->se->op.copy_file_range)
1879 req->se->op.copy_file_range(req, nodeid_in, arg->off_in,
1880 &fi_in, arg->nodeid_out,
1881 arg->off_out, &fi_out, arg->len,
1889 struct fuse_lseek_in *arg = (
struct fuse_lseek_in *) inarg;
1892 memset(&fi, 0,
sizeof(fi));
1895 if (req->se->op.lseek)
1896 req->se->op.lseek(req, nodeid, arg->offset, arg->whence, &fi);
1903 static __attribute__((no_sanitize(
"thread")))
1906 struct fuse_init_in *arg = (
struct fuse_init_in *) inarg;
1907 struct fuse_init_out outarg;
1908 struct fuse_session *se = req->se;
1909 size_t bufsize = se->bufsize;
1910 size_t outargsize =
sizeof(outarg);
1911 uint64_t inargflags = 0;
1912 uint64_t outargflags = 0;
1915 fuse_log(FUSE_LOG_DEBUG,
"INIT: %u.%u\n", arg->major, arg->minor);
1916 if (arg->major == 7 && arg->minor >= 6) {
1917 fuse_log(FUSE_LOG_DEBUG,
"flags=0x%08x\n", arg->flags);
1918 fuse_log(FUSE_LOG_DEBUG,
"max_readahead=0x%08x\n",
1919 arg->max_readahead);
1922 se->conn.proto_major = arg->major;
1923 se->conn.proto_minor = arg->minor;
1924 se->conn.capable = 0;
1927 memset(&outarg, 0,
sizeof(outarg));
1928 outarg.major = FUSE_KERNEL_VERSION;
1929 outarg.minor = FUSE_KERNEL_MINOR_VERSION;
1931 if (arg->major < 7) {
1932 fuse_log(FUSE_LOG_ERR,
"fuse: unsupported protocol version: %u.%u\n",
1933 arg->major, arg->minor);
1938 if (arg->major > 7) {
1940 send_reply_ok(req, &outarg,
sizeof(outarg));
1944 if (arg->minor >= 6) {
1945 if (arg->max_readahead < se->conn.max_readahead)
1946 se->conn.max_readahead = arg->max_readahead;
1947 inargflags = arg->flags;
1948 if (inargflags & FUSE_INIT_EXT)
1949 inargflags = inargflags | (uint64_t) arg->flags2 << 32;
1950 if (inargflags & FUSE_ASYNC_READ)
1952 if (inargflags & FUSE_POSIX_LOCKS)
1954 if (inargflags & FUSE_ATOMIC_O_TRUNC)
1956 if (inargflags & FUSE_EXPORT_SUPPORT)
1958 if (inargflags & FUSE_DONT_MASK)
1960 if (inargflags & FUSE_FLOCK_LOCKS)
1962 if (inargflags & FUSE_AUTO_INVAL_DATA)
1964 if (inargflags & FUSE_DO_READDIRPLUS)
1966 if (inargflags & FUSE_READDIRPLUS_AUTO)
1968 if (inargflags & FUSE_ASYNC_DIO)
1970 if (inargflags & FUSE_WRITEBACK_CACHE)
1972 if (inargflags & FUSE_NO_OPEN_SUPPORT)
1974 if (inargflags & FUSE_PARALLEL_DIROPS)
1976 if (inargflags & FUSE_POSIX_ACL)
1978 if (inargflags & FUSE_HANDLE_KILLPRIV)
1980 if (inargflags & FUSE_CACHE_SYMLINKS)
1982 if (inargflags & FUSE_NO_OPENDIR_SUPPORT)
1984 if (inargflags & FUSE_EXPLICIT_INVAL_DATA)
1986 if (!(inargflags & FUSE_MAX_PAGES)) {
1987 size_t max_bufsize =
1988 FUSE_DEFAULT_MAX_PAGES_PER_REQ * getpagesize()
1989 + FUSE_BUFFER_HEADER_SIZE;
1990 if (bufsize > max_bufsize) {
1991 bufsize = max_bufsize;
1995 se->conn.max_readahead = 0;
1998 if (se->conn.proto_minor >= 14) {
2000 #ifdef HAVE_VMSPLICE
2006 if (se->conn.proto_minor >= 18)
2016 #define LL_SET_DEFAULT(cond, cap) \
2017 if ((cond) && (se->conn.capable & (cap))) \
2018 se->conn.want |= (cap)
2027 LL_SET_DEFAULT(se->op.getlk && se->op.setlk,
2031 LL_SET_DEFAULT(se->op.readdirplus && se->op.readdir,
2033 se->conn.time_gran = 1;
2035 if (bufsize < FUSE_MIN_READ_BUFFER) {
2036 fuse_log(FUSE_LOG_ERR,
"fuse: warning: buffer size too small: %zu\n",
2038 bufsize = FUSE_MIN_READ_BUFFER;
2040 se->bufsize = bufsize;
2042 if (se->conn.max_write > bufsize - FUSE_BUFFER_HEADER_SIZE)
2043 se->conn.max_write = bufsize - FUSE_BUFFER_HEADER_SIZE;
2047 se->op.init(se->userdata, &se->conn);
2049 if (se->conn.want & (~se->conn.capable)) {
2050 fuse_log(FUSE_LOG_ERR,
"fuse: error: filesystem requested capabilities "
2051 "0x%x that are not supported by kernel, aborting.\n",
2052 se->conn.want & (~se->conn.capable));
2054 se->error = -EPROTO;
2059 unsigned max_read_mo = get_max_read(se->mo);
2060 if (se->conn.max_read != max_read_mo) {
2061 fuse_log(FUSE_LOG_ERR,
"fuse: error: init() and fuse_session_new() "
2062 "requested different maximum read size (%u vs %u)\n",
2063 se->conn.max_read, max_read_mo);
2065 se->error = -EPROTO;
2070 if (se->conn.max_write < bufsize - FUSE_BUFFER_HEADER_SIZE) {
2071 se->bufsize = se->conn.max_write + FUSE_BUFFER_HEADER_SIZE;
2073 if (arg->flags & FUSE_MAX_PAGES) {
2074 outarg.flags |= FUSE_MAX_PAGES;
2075 outarg.max_pages = (se->conn.max_write - 1) / getpagesize() + 1;
2077 outargflags = outarg.flags;
2080 outargflags |= FUSE_BIG_WRITES;
2083 outargflags |= FUSE_ASYNC_READ;
2085 outargflags |= FUSE_POSIX_LOCKS;
2087 outargflags |= FUSE_ATOMIC_O_TRUNC;
2089 outargflags |= FUSE_EXPORT_SUPPORT;
2091 outargflags |= FUSE_DONT_MASK;
2093 outargflags |= FUSE_FLOCK_LOCKS;
2095 outargflags |= FUSE_AUTO_INVAL_DATA;
2097 outargflags |= FUSE_DO_READDIRPLUS;
2099 outargflags |= FUSE_READDIRPLUS_AUTO;
2101 outargflags |= FUSE_ASYNC_DIO;
2103 outargflags |= FUSE_WRITEBACK_CACHE;
2105 outargflags |= FUSE_POSIX_ACL;
2107 outargflags |= FUSE_CACHE_SYMLINKS;
2109 outargflags |= FUSE_EXPLICIT_INVAL_DATA;
2111 if (inargflags & FUSE_INIT_EXT) {
2112 outargflags |= FUSE_INIT_EXT;
2113 outarg.flags2 = outargflags >> 32;
2116 outarg.flags = outargflags;
2118 outarg.max_readahead = se->conn.max_readahead;
2119 outarg.max_write = se->conn.max_write;
2120 if (se->conn.proto_minor >= 13) {
2121 if (se->conn.max_background >= (1 << 16))
2122 se->conn.max_background = (1 << 16) - 1;
2123 if (se->conn.congestion_threshold > se->conn.max_background)
2124 se->conn.congestion_threshold = se->conn.max_background;
2125 if (!se->conn.congestion_threshold) {
2126 se->conn.congestion_threshold =
2127 se->conn.max_background * 3 / 4;
2130 outarg.max_background = se->conn.max_background;
2131 outarg.congestion_threshold = se->conn.congestion_threshold;
2133 if (se->conn.proto_minor >= 23)
2134 outarg.time_gran = se->conn.time_gran;
2137 fuse_log(FUSE_LOG_DEBUG,
" INIT: %u.%u\n", outarg.major, outarg.minor);
2138 fuse_log(FUSE_LOG_DEBUG,
" flags=0x%08x\n", outarg.flags);
2139 fuse_log(FUSE_LOG_DEBUG,
" max_readahead=0x%08x\n",
2140 outarg.max_readahead);
2141 fuse_log(FUSE_LOG_DEBUG,
" max_write=0x%08x\n", outarg.max_write);
2142 fuse_log(FUSE_LOG_DEBUG,
" max_background=%i\n",
2143 outarg.max_background);
2144 fuse_log(FUSE_LOG_DEBUG,
" congestion_threshold=%i\n",
2145 outarg.congestion_threshold);
2146 fuse_log(FUSE_LOG_DEBUG,
" time_gran=%u\n",
2150 outargsize = FUSE_COMPAT_INIT_OUT_SIZE;
2151 else if (arg->minor < 23)
2152 outargsize = FUSE_COMPAT_22_INIT_OUT_SIZE;
2154 send_reply_ok(req, &outarg, outargsize);
2159 struct fuse_session *se = req->se;
2164 se->got_destroy = 1;
2166 se->op.destroy(se->userdata);
2168 send_reply_ok(req, NULL, 0);
2171 static void list_del_nreq(
struct fuse_notify_req *nreq)
2173 struct fuse_notify_req *prev = nreq->prev;
2174 struct fuse_notify_req *next = nreq->next;
2179 static void list_add_nreq(
struct fuse_notify_req *nreq,
2180 struct fuse_notify_req *next)
2182 struct fuse_notify_req *prev = next->prev;
2189 static void list_init_nreq(
struct fuse_notify_req *nreq)
2196 const void *inarg,
const struct fuse_buf *buf)
2198 struct fuse_session *se = req->se;
2199 struct fuse_notify_req *nreq;
2200 struct fuse_notify_req *head;
2202 pthread_mutex_lock(&se->lock);
2203 head = &se->notify_list;
2204 for (nreq = head->next; nreq != head; nreq = nreq->next) {
2205 if (nreq->unique == req->unique) {
2206 list_del_nreq(nreq);
2210 pthread_mutex_unlock(&se->lock);
2213 nreq->reply(nreq, req, nodeid, inarg, buf);
2216 static int send_notify_iov(
struct fuse_session *se,
int notify_code,
2217 struct iovec *iov,
int count)
2219 struct fuse_out_header out;
2225 out.error = notify_code;
2226 iov[0].iov_base = &out;
2227 iov[0].iov_len =
sizeof(
struct fuse_out_header);
2229 return fuse_send_msg(se, NULL, iov, count);
2235 struct fuse_notify_poll_wakeup_out outarg;
2236 struct iovec iov[2];
2240 iov[1].iov_base = &outarg;
2241 iov[1].iov_len =
sizeof(outarg);
2243 return send_notify_iov(ph->se, FUSE_NOTIFY_POLL, iov, 2);
2250 off_t off, off_t len)
2252 struct fuse_notify_inval_inode_out outarg;
2253 struct iovec iov[2];
2258 if (se->conn.proto_minor < 12)
2265 iov[1].iov_base = &outarg;
2266 iov[1].iov_len =
sizeof(outarg);
2268 return send_notify_iov(se, FUSE_NOTIFY_INVAL_INODE, iov, 2);
2272 const char *name,
size_t namelen)
2274 struct fuse_notify_inval_entry_out outarg;
2275 struct iovec iov[3];
2280 if (se->conn.proto_minor < 12)
2283 outarg.parent = parent;
2284 outarg.namelen = namelen;
2287 iov[1].iov_base = &outarg;
2288 iov[1].iov_len =
sizeof(outarg);
2289 iov[2].iov_base = (
void *)name;
2290 iov[2].iov_len = namelen + 1;
2292 return send_notify_iov(se, FUSE_NOTIFY_INVAL_ENTRY, iov, 3);
2297 const char *name,
size_t namelen)
2299 struct fuse_notify_delete_out outarg;
2300 struct iovec iov[3];
2305 if (se->conn.proto_minor < 18)
2308 outarg.parent = parent;
2309 outarg.child = child;
2310 outarg.namelen = namelen;
2313 iov[1].iov_base = &outarg;
2314 iov[1].iov_len =
sizeof(outarg);
2315 iov[2].iov_base = (
void *)name;
2316 iov[2].iov_len = namelen + 1;
2318 return send_notify_iov(se, FUSE_NOTIFY_DELETE, iov, 3);
2325 struct fuse_out_header out;
2326 struct fuse_notify_store_out outarg;
2327 struct iovec iov[3];
2334 if (se->conn.proto_minor < 15)
2338 out.error = FUSE_NOTIFY_STORE;
2340 outarg.nodeid = ino;
2341 outarg.offset = offset;
2345 iov[0].iov_base = &out;
2346 iov[0].iov_len =
sizeof(out);
2347 iov[1].iov_base = &outarg;
2348 iov[1].iov_len =
sizeof(outarg);
2350 res = fuse_send_data_iov(se, NULL, iov, 2, bufv, flags);
2357 struct fuse_retrieve_req {
2358 struct fuse_notify_req nreq;
2362 static void fuse_ll_retrieve_reply(
struct fuse_notify_req *nreq,
2367 struct fuse_session *se = req->se;
2368 struct fuse_retrieve_req *rreq =
2369 container_of(nreq,
struct fuse_retrieve_req, nreq);
2370 const struct fuse_notify_retrieve_in *arg = inarg;
2377 bufv.
buf[0].
mem = PARAM(arg);
2379 bufv.
buf[0].
size -=
sizeof(
struct fuse_in_header) +
2380 sizeof(struct fuse_notify_retrieve_in);
2382 if (bufv.
buf[0].
size < arg->size) {
2383 fuse_log(FUSE_LOG_ERR,
"fuse: retrieve reply: buffer size too small\n");
2389 if (se->op.retrieve_reply) {
2390 se->op.retrieve_reply(req, rreq->cookie, ino,
2391 arg->offset, &bufv);
2398 fuse_ll_clear_pipe(se);
2402 size_t size, off_t offset,
void *cookie)
2404 struct fuse_notify_retrieve_out outarg;
2405 struct iovec iov[2];
2406 struct fuse_retrieve_req *rreq;
2412 if (se->conn.proto_minor < 15)
2415 rreq = malloc(
sizeof(*rreq));
2419 pthread_mutex_lock(&se->lock);
2420 rreq->cookie = cookie;
2421 rreq->nreq.unique = se->notify_ctr++;
2422 rreq->nreq.reply = fuse_ll_retrieve_reply;
2423 list_add_nreq(&rreq->nreq, &se->notify_list);
2424 pthread_mutex_unlock(&se->lock);
2426 outarg.notify_unique = rreq->nreq.unique;
2427 outarg.nodeid = ino;
2428 outarg.offset = offset;
2432 iov[1].iov_base = &outarg;
2433 iov[1].iov_len =
sizeof(outarg);
2435 err = send_notify_iov(se, FUSE_NOTIFY_RETRIEVE, iov, 2);
2437 pthread_mutex_lock(&se->lock);
2438 list_del_nreq(&rreq->nreq);
2439 pthread_mutex_unlock(&se->lock);
2448 return req->se->userdata;
2459 pthread_mutex_lock(&req->lock);
2460 pthread_mutex_lock(&req->se->lock);
2461 req->u.ni.func = func;
2462 req->u.ni.data = data;
2463 pthread_mutex_unlock(&req->se->lock);
2464 if (req->interrupted && func)
2466 pthread_mutex_unlock(&req->lock);
2473 pthread_mutex_lock(&req->se->lock);
2474 interrupted = req->interrupted;
2475 pthread_mutex_unlock(&req->se->lock);
2484 [FUSE_LOOKUP] = { do_lookup,
"LOOKUP" },
2485 [FUSE_FORGET] = { do_forget,
"FORGET" },
2486 [FUSE_GETATTR] = { do_getattr,
"GETATTR" },
2487 [FUSE_SETATTR] = { do_setattr,
"SETATTR" },
2488 [FUSE_READLINK] = { do_readlink,
"READLINK" },
2489 [FUSE_SYMLINK] = { do_symlink,
"SYMLINK" },
2490 [FUSE_MKNOD] = { do_mknod,
"MKNOD" },
2491 [FUSE_MKDIR] = { do_mkdir,
"MKDIR" },
2492 [FUSE_UNLINK] = { do_unlink,
"UNLINK" },
2493 [FUSE_RMDIR] = { do_rmdir,
"RMDIR" },
2494 [FUSE_RENAME] = { do_rename,
"RENAME" },
2495 [FUSE_LINK] = { do_link,
"LINK" },
2496 [FUSE_OPEN] = { do_open,
"OPEN" },
2497 [FUSE_READ] = { do_read,
"READ" },
2498 [FUSE_WRITE] = { do_write,
"WRITE" },
2499 [FUSE_STATFS] = { do_statfs,
"STATFS" },
2500 [FUSE_RELEASE] = { do_release,
"RELEASE" },
2501 [FUSE_FSYNC] = { do_fsync,
"FSYNC" },
2502 [FUSE_SETXATTR] = { do_setxattr,
"SETXATTR" },
2503 [FUSE_GETXATTR] = { do_getxattr,
"GETXATTR" },
2504 [FUSE_LISTXATTR] = { do_listxattr,
"LISTXATTR" },
2505 [FUSE_REMOVEXATTR] = { do_removexattr,
"REMOVEXATTR" },
2506 [FUSE_FLUSH] = { do_flush,
"FLUSH" },
2507 [FUSE_INIT] = { do_init,
"INIT" },
2508 [FUSE_OPENDIR] = { do_opendir,
"OPENDIR" },
2509 [FUSE_READDIR] = { do_readdir,
"READDIR" },
2510 [FUSE_RELEASEDIR] = { do_releasedir,
"RELEASEDIR" },
2511 [FUSE_FSYNCDIR] = { do_fsyncdir,
"FSYNCDIR" },
2512 [FUSE_GETLK] = { do_getlk,
"GETLK" },
2513 [FUSE_SETLK] = { do_setlk,
"SETLK" },
2514 [FUSE_SETLKW] = { do_setlkw,
"SETLKW" },
2515 [FUSE_ACCESS] = { do_access,
"ACCESS" },
2516 [FUSE_CREATE] = { do_create,
"CREATE" },
2517 [FUSE_INTERRUPT] = { do_interrupt,
"INTERRUPT" },
2518 [FUSE_BMAP] = { do_bmap,
"BMAP" },
2519 [FUSE_IOCTL] = { do_ioctl,
"IOCTL" },
2520 [FUSE_POLL] = { do_poll,
"POLL" },
2521 [FUSE_FALLOCATE] = { do_fallocate,
"FALLOCATE" },
2522 [FUSE_DESTROY] = { do_destroy,
"DESTROY" },
2523 [FUSE_NOTIFY_REPLY] = { (
void *) 1,
"NOTIFY_REPLY" },
2524 [FUSE_BATCH_FORGET] = { do_batch_forget,
"BATCH_FORGET" },
2525 [FUSE_READDIRPLUS] = { do_readdirplus,
"READDIRPLUS"},
2526 [FUSE_RENAME2] = { do_rename2,
"RENAME2" },
2527 [FUSE_COPY_FILE_RANGE] = { do_copy_file_range,
"COPY_FILE_RANGE" },
2528 [FUSE_LSEEK] = { do_lseek,
"LSEEK" },
2529 [CUSE_INIT] = { cuse_lowlevel_init,
"CUSE_INIT" },
2532 #define FUSE_MAXOP (sizeof(fuse_ll_ops) / sizeof(fuse_ll_ops[0]))
2534 static const char *opname(
enum fuse_opcode opcode)
2536 if (opcode >= FUSE_MAXOP || !fuse_ll_ops[opcode].name)
2539 return fuse_ll_ops[opcode].name;
2542 static int fuse_ll_copy_from_pipe(
struct fuse_bufvec *dst,
2547 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: %s\n", strerror(-res));
2551 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: short read\n");
2560 fuse_session_process_buf_int(se, buf, NULL);
2563 void fuse_session_process_buf_int(
struct fuse_session *se,
2564 const struct fuse_buf *buf,
struct fuse_chan *ch)
2566 const size_t write_header_size =
sizeof(
struct fuse_in_header) +
2567 sizeof(struct fuse_write_in);
2569 struct fuse_bufvec tmpbuf = FUSE_BUFVEC_INIT(write_header_size);
2570 struct fuse_in_header *in;
2572 struct fuse_req *req;
2581 mbuf = malloc(tmpbuf.
buf[0].
size);
2583 fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate header\n");
2586 tmpbuf.
buf[0].
mem = mbuf;
2588 res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv);
2599 "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, pid: %u\n",
2600 (
unsigned long long) in->unique,
2601 opname((
enum fuse_opcode) in->opcode), in->opcode,
2602 (
unsigned long long) in->nodeid, buf->
size, in->pid);
2605 req = fuse_ll_alloc_req(se);
2607 struct fuse_out_header out = {
2608 .unique = in->unique,
2611 struct iovec iov = {
2613 .iov_len =
sizeof(
struct fuse_out_header),
2616 fuse_send_msg(se, ch, &iov, 1);
2620 req->unique = in->unique;
2621 req->ctx.uid = in->uid;
2622 req->ctx.gid = in->gid;
2623 req->ctx.pid = in->pid;
2624 req->ch = ch ? fuse_chan_get(ch) : NULL;
2627 if (!se->got_init) {
2628 enum fuse_opcode expected;
2630 expected = se->cuse_data ? CUSE_INIT : FUSE_INIT;
2631 if (in->opcode != expected)
2633 }
else if (in->opcode == FUSE_INIT || in->opcode == CUSE_INIT)
2638 if (se->deny_others && in->uid != se->owner && in->uid != 0 &&
2639 in->opcode != FUSE_INIT && in->opcode != FUSE_READ &&
2640 in->opcode != FUSE_WRITE && in->opcode != FUSE_FSYNC &&
2641 in->opcode != FUSE_RELEASE && in->opcode != FUSE_READDIR &&
2642 in->opcode != FUSE_FSYNCDIR && in->opcode != FUSE_RELEASEDIR &&
2643 in->opcode != FUSE_NOTIFY_REPLY &&
2644 in->opcode != FUSE_READDIRPLUS)
2648 if (in->opcode >= FUSE_MAXOP || !fuse_ll_ops[in->opcode].func)
2650 if (in->opcode != FUSE_INTERRUPT) {
2651 struct fuse_req *intr;
2652 pthread_mutex_lock(&se->lock);
2653 intr = check_interrupt(se, req);
2654 list_add_req(req, &se->list);
2655 pthread_mutex_unlock(&se->lock);
2661 (in->opcode != FUSE_WRITE || !se->op.write_buf) &&
2662 in->opcode != FUSE_NOTIFY_REPLY) {
2666 newmbuf = realloc(mbuf, buf->
size);
2667 if (newmbuf == NULL)
2671 tmpbuf = FUSE_BUFVEC_INIT(buf->
size - write_header_size);
2672 tmpbuf.
buf[0].
mem = (
char *)mbuf + write_header_size;
2674 res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv);
2682 inarg = (
void *) &in[1];
2683 if (in->opcode == FUSE_WRITE && se->op.write_buf)
2684 do_write_buf(req, in->nodeid, inarg, buf);
2685 else if (in->opcode == FUSE_NOTIFY_REPLY)
2686 do_notify_reply(req, in->nodeid, inarg, buf);
2688 fuse_ll_ops[in->opcode].func(req, in->nodeid, inarg);
2698 fuse_ll_clear_pipe(se);
2702 #define LL_OPTION(n,o,v) \
2703 { n, offsetof(struct fuse_session, o), v }
2705 static const struct fuse_opt fuse_ll_opts[] = {
2706 LL_OPTION(
"debug", debug, 1),
2707 LL_OPTION(
"-d", debug, 1),
2708 LL_OPTION(
"--debug", debug, 1),
2709 LL_OPTION(
"allow_root", deny_others, 1),
2715 printf(
"using FUSE kernel interface version %i.%i\n",
2716 FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
2717 fuse_mount_version();
2725 " -o allow_other allow access by all users\n"
2726 " -o allow_root allow access by root\n"
2727 " -o auto_unmount auto unmount on process termination\n");
2732 struct fuse_ll_pipe *llp;
2734 if (se->got_init && !se->got_destroy) {
2736 se->op.destroy(se->userdata);
2738 llp = pthread_getspecific(se->pipe_key);
2740 fuse_ll_pipe_free(llp);
2741 pthread_key_delete(se->pipe_key);
2742 pthread_mutex_destroy(&se->lock);
2743 free(se->cuse_data);
2746 destroy_mount_opts(se->mo);
2751 static void fuse_ll_pipe_destructor(
void *data)
2753 struct fuse_ll_pipe *llp = data;
2754 fuse_ll_pipe_free(llp);
2759 return fuse_session_receive_buf_int(se, buf, NULL);
2762 int fuse_session_receive_buf_int(
struct fuse_session *se,
struct fuse_buf *buf,
2763 struct fuse_chan *ch)
2768 size_t bufsize = se->bufsize;
2769 struct fuse_ll_pipe *llp;
2775 llp = fuse_ll_get_pipe(se);
2779 if (llp->size < bufsize) {
2780 if (llp->can_grow) {
2781 res = fcntl(llp->pipe[0], F_SETPIPE_SZ, bufsize);
2784 res = grow_pipe_to_max(llp->pipe[0]);
2791 if (llp->size < bufsize)
2795 res = splice(ch ? ch->fd : se->fd,
2796 NULL, llp->pipe[1], NULL, bufsize, 0);
2803 if (err == ENODEV) {
2809 if (err != EINTR && err != EAGAIN)
2810 perror(
"fuse: splice from device");
2814 if (res <
sizeof(
struct fuse_in_header)) {
2815 fuse_log(FUSE_LOG_ERR,
"short splice from fuse device\n");
2830 if (res <
sizeof(
struct fuse_in_header) +
2831 sizeof(
struct fuse_write_in) + pagesize) {
2836 buf->
mem = malloc(se->bufsize);
2839 "fuse: failed to allocate read buffer\n");
2849 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: %s\n",
2851 fuse_ll_clear_pipe(se);
2854 if (res < tmpbuf.size) {
2855 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: short read\n");
2856 fuse_ll_clear_pipe(se);
2859 assert(res == tmpbuf.size);
2863 buf->
fd = tmpbuf.fd;
2873 buf->
mem = malloc(se->bufsize);
2876 "fuse: failed to allocate read buffer\n");
2882 res = read(ch ? ch->fd : se->fd,
buf->
mem, se->bufsize);
2893 if (err == ENODEV) {
2902 if (err != EINTR && err != EAGAIN)
2903 perror(
"fuse: reading device");
2906 if ((
size_t) res <
sizeof(
struct fuse_in_header)) {
2907 fuse_log(FUSE_LOG_ERR,
"short read on fuse device\n");
2918 size_t op_size,
void *userdata)
2921 struct fuse_session *se;
2922 struct mount_opts *mo;
2925 fuse_log(FUSE_LOG_ERR,
"fuse: warning: library too old, some operations may not work\n");
2929 if (args->
argc == 0) {
2930 fuse_log(FUSE_LOG_ERR,
"fuse: empty argv passed to fuse_session_new().\n");
2934 se = (
struct fuse_session *) calloc(1,
sizeof(
struct fuse_session));
2936 fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate fuse object\n");
2940 se->conn.max_write = UINT_MAX;
2941 se->conn.max_readahead = UINT_MAX;
2946 if(se->deny_others) {
2956 mo = parse_mount_opts(args);
2960 if(args->
argc == 1 &&
2961 args->
argv[0][0] ==
'-') {
2962 fuse_log(FUSE_LOG_ERR,
"fuse: warning: argv[0] looks like an option, but "
2963 "will be ignored\n");
2964 }
else if (args->
argc != 1) {
2966 fuse_log(FUSE_LOG_ERR,
"fuse: unknown option(s): `");
2967 for(i = 1; i < args->
argc-1; i++)
2974 fuse_log(FUSE_LOG_DEBUG,
"FUSE library version: %s\n", PACKAGE_VERSION);
2976 se->bufsize = FUSE_MAX_MAX_PAGES * getpagesize() +
2977 FUSE_BUFFER_HEADER_SIZE;
2979 list_init_req(&se->list);
2980 list_init_req(&se->interrupts);
2981 list_init_nreq(&se->notify_list);
2983 pthread_mutex_init(&se->lock, NULL);
2985 err = pthread_key_create(&se->pipe_key, fuse_ll_pipe_destructor);
2987 fuse_log(FUSE_LOG_ERR,
"fuse: failed to create thread specific key: %s\n",
2992 memcpy(&se->op, op, op_size);
2993 se->owner = getuid();
2994 se->userdata = userdata;
3000 pthread_mutex_destroy(&se->lock);
3005 destroy_mount_opts(mo);
3021 fd = open(
"/dev/null", O_RDWR);
3024 }
while (fd >= 0 && fd <= 2);
3032 fd = fuse_mnt_parse_fuse_fd(mountpoint);
3034 if (fcntl(fd, F_GETFD) == -1) {
3036 "fuse: Invalid file descriptor /dev/fd/%u\n",
3045 fd = fuse_kern_mount(mountpoint, se->mo);
3051 se->mountpoint = strdup(mountpoint);
3052 if (se->mountpoint == NULL)
3058 fuse_kern_unmount(mountpoint, fd);
3069 if (se->mountpoint != NULL) {
3070 fuse_kern_unmount(se->mountpoint, se->fd);
3072 free(se->mountpoint);
3073 se->mountpoint = NULL;
3081 size_t bufsize = 1024;
3085 unsigned long pid = req->ctx.pid;
3088 sprintf(path,
"/proc/%lu/task/%lu/status", pid, pid);
3091 buf = malloc(bufsize);
3096 fd = open(path, O_RDONLY);
3100 ret = read(fd, buf, bufsize);
3107 if ((
size_t)ret == bufsize) {
3114 s = strstr(buf,
"\nGroups:");
3122 unsigned long val = strtoul(s, &end, 0);
3142 (void) req; (void) size; (void) list;
3149 __attribute__((no_sanitize_thread))
3155 __attribute__((no_sanitize_thread))
3162 __attribute__((no_sanitize_thread))
#define FUSE_CAP_IOCTL_DIR
#define FUSE_CAP_DONT_MASK
#define FUSE_CAP_HANDLE_KILLPRIV
#define FUSE_CAP_AUTO_INVAL_DATA
#define FUSE_CAP_SPLICE_READ
#define FUSE_CAP_PARALLEL_DIROPS
size_t fuse_buf_size(const struct fuse_bufvec *bufv)
#define FUSE_CAP_WRITEBACK_CACHE
#define FUSE_CAP_ATOMIC_O_TRUNC
#define FUSE_CAP_ASYNC_READ
#define FUSE_CAP_SPLICE_WRITE
#define FUSE_CAP_CACHE_SYMLINKS
#define FUSE_CAP_POSIX_ACL
#define FUSE_CAP_EXPORT_SUPPORT
#define FUSE_CAP_POSIX_LOCKS
#define FUSE_CAP_EXPLICIT_INVAL_DATA
#define FUSE_CAP_READDIRPLUS_AUTO
ssize_t fuse_buf_copy(struct fuse_bufvec *dst, struct fuse_bufvec *src, enum fuse_buf_copy_flags flags)
#define FUSE_CAP_NO_OPENDIR_SUPPORT
#define FUSE_CAP_ASYNC_DIO
#define FUSE_CAP_NO_OPEN_SUPPORT
#define FUSE_CAP_READDIRPLUS
void fuse_pollhandle_destroy(struct fuse_pollhandle *ph)
@ FUSE_BUF_SPLICE_NONBLOCK
#define FUSE_CAP_SPLICE_MOVE
#define FUSE_CAP_FLOCK_LOCKS
void fuse_log(enum fuse_log_level level, const char *fmt,...)
void fuse_session_destroy(struct fuse_session *se)
int fuse_reply_data(fuse_req_t req, struct fuse_bufvec *bufv, enum fuse_buf_copy_flags flags)
int fuse_reply_lock(fuse_req_t req, const struct flock *lock)
int fuse_reply_open(fuse_req_t req, const struct fuse_file_info *fi)
void fuse_session_exit(struct fuse_session *se)
void(* fuse_interrupt_func_t)(fuse_req_t req, void *data)
int fuse_reply_poll(fuse_req_t req, unsigned revents)
int fuse_reply_err(fuse_req_t req, int err)
int fuse_reply_buf(fuse_req_t req, const char *buf, size_t size)
struct fuse_req * fuse_req_t
size_t fuse_add_direntry_plus(fuse_req_t req, char *buf, size_t bufsize, const char *name, const struct fuse_entry_param *e, off_t off)
int fuse_reply_ioctl_iov(fuse_req_t req, int result, const struct iovec *iov, int count)
int fuse_lowlevel_notify_delete(struct fuse_session *se, fuse_ino_t parent, fuse_ino_t child, const char *name, size_t namelen)
void fuse_session_process_buf(struct fuse_session *se, const struct fuse_buf *buf)
int fuse_session_exited(struct fuse_session *se)
int fuse_session_fd(struct fuse_session *se)
int fuse_req_interrupted(fuse_req_t req)
int fuse_req_getgroups(fuse_req_t req, int size, gid_t list[])
int fuse_lowlevel_notify_retrieve(struct fuse_session *se, fuse_ino_t ino, size_t size, off_t offset, void *cookie)
int fuse_reply_readlink(fuse_req_t req, const char *link)
int fuse_reply_iov(fuse_req_t req, const struct iovec *iov, int count)
int fuse_reply_bmap(fuse_req_t req, uint64_t idx)
int fuse_reply_entry(fuse_req_t req, const struct fuse_entry_param *e)
void fuse_session_unmount(struct fuse_session *se)
void fuse_reply_none(fuse_req_t req)
int fuse_reply_ioctl_retry(fuse_req_t req, const struct iovec *in_iov, size_t in_count, const struct iovec *out_iov, size_t out_count)
void fuse_lowlevel_help(void)
int fuse_lowlevel_notify_inval_inode(struct fuse_session *se, fuse_ino_t ino, off_t off, off_t len)
struct fuse_session * fuse_session_new(struct fuse_args *args, const struct fuse_lowlevel_ops *op, size_t op_size, void *userdata)
int fuse_reply_statfs(fuse_req_t req, const struct statvfs *stbuf)
int fuse_reply_write(fuse_req_t req, size_t count)
int fuse_session_receive_buf(struct fuse_session *se, struct fuse_buf *buf)
int fuse_session_mount(struct fuse_session *se, const char *mountpoint)
void * fuse_req_userdata(fuse_req_t req)
int fuse_lowlevel_notify_poll(struct fuse_pollhandle *ph)
int fuse_lowlevel_notify_inval_entry(struct fuse_session *se, fuse_ino_t parent, const char *name, size_t namelen)
void fuse_req_interrupt_func(fuse_req_t req, fuse_interrupt_func_t func, void *data)
void fuse_session_reset(struct fuse_session *se)
int fuse_reply_create(fuse_req_t req, const struct fuse_entry_param *e, const struct fuse_file_info *fi)
int fuse_reply_lseek(fuse_req_t req, off_t off)
void fuse_lowlevel_version(void)
size_t fuse_add_direntry(fuse_req_t req, char *buf, size_t bufsize, const char *name, const struct stat *stbuf, off_t off)
const struct fuse_ctx * fuse_req_ctx(fuse_req_t req)
int fuse_reply_attr(fuse_req_t req, const struct stat *attr, double attr_timeout)
int fuse_reply_ioctl(fuse_req_t req, int result, const void *buf, size_t size)
int fuse_lowlevel_notify_store(struct fuse_session *se, fuse_ino_t ino, off_t offset, struct fuse_bufvec *bufv, enum fuse_buf_copy_flags flags)
int fuse_reply_xattr(fuse_req_t req, size_t count)
int fuse_opt_add_arg(struct fuse_args *args, const char *arg)
void fuse_opt_free_args(struct fuse_args *args)
int fuse_opt_parse(struct fuse_args *args, void *data, const struct fuse_opt opts[], fuse_opt_proc_t proc)
enum fuse_buf_flags flags
unsigned int cache_readdir