15#include "fuse_config.h"
17#include "fuse_kernel.h"
20#include "mount_util.h"
35#ifndef F_LINUX_SPECIFIC_BASE
36#define F_LINUX_SPECIFIC_BASE 1024
39#define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
43#define PARAM(inarg) (((char *)(inarg)) + sizeof(*(inarg)))
44#define OFFSET_MAX 0x7fffffffffffffffLL
46#define container_of(ptr, type, member) ({ \
47 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
48 (type *)( (char *)__mptr - offsetof(type,member) );})
50struct fuse_pollhandle {
52 struct fuse_session *se;
55static size_t pagesize;
57static __attribute__((constructor))
void fuse_ll_init_pagesize(
void)
59 pagesize = getpagesize();
62static void convert_stat(
const struct stat *stbuf,
struct fuse_attr *attr)
64 attr->ino = stbuf->st_ino;
65 attr->mode = stbuf->st_mode;
66 attr->nlink = stbuf->st_nlink;
67 attr->uid = stbuf->st_uid;
68 attr->gid = stbuf->st_gid;
69 attr->rdev = stbuf->st_rdev;
70 attr->size = stbuf->st_size;
71 attr->blksize = stbuf->st_blksize;
72 attr->blocks = stbuf->st_blocks;
73 attr->atime = stbuf->st_atime;
74 attr->mtime = stbuf->st_mtime;
75 attr->ctime = stbuf->st_ctime;
76 attr->atimensec = ST_ATIM_NSEC(stbuf);
77 attr->mtimensec = ST_MTIM_NSEC(stbuf);
78 attr->ctimensec = ST_CTIM_NSEC(stbuf);
81static void convert_attr(
const struct fuse_setattr_in *attr,
struct stat *stbuf)
83 stbuf->st_mode = attr->mode;
84 stbuf->st_uid = attr->uid;
85 stbuf->st_gid = attr->gid;
86 stbuf->st_size = attr->size;
87 stbuf->st_atime = attr->atime;
88 stbuf->st_mtime = attr->mtime;
89 stbuf->st_ctime = attr->ctime;
90 ST_ATIM_NSEC_SET(stbuf, attr->atimensec);
91 ST_MTIM_NSEC_SET(stbuf, attr->mtimensec);
92 ST_CTIM_NSEC_SET(stbuf, attr->ctimensec);
95static size_t iov_length(
const struct iovec *iov,
size_t count)
100 for (seg = 0; seg < count; seg++)
101 ret += iov[seg].iov_len;
105static void list_init_req(
struct fuse_req *req)
111static void list_del_req(
struct fuse_req *req)
113 struct fuse_req *prev = req->prev;
114 struct fuse_req *next = req->next;
119static void list_add_req(
struct fuse_req *req,
struct fuse_req *next)
121 struct fuse_req *prev = next->prev;
130 assert(req->ch == NULL);
131 pthread_mutex_destroy(&req->lock);
138 struct fuse_session *se = req->se;
140 if (se->conn.no_interrupt) {
141 ctr = --req->ref_cnt;
142 fuse_chan_put(req->ch);
145 pthread_mutex_lock(&se->lock);
146 req->u.ni.func = NULL;
147 req->u.ni.data = NULL;
149 ctr = --req->ref_cnt;
150 fuse_chan_put(req->ch);
152 pthread_mutex_unlock(&se->lock);
158static struct fuse_req *fuse_ll_alloc_req(
struct fuse_session *se)
160 struct fuse_req *req;
162 req = (
struct fuse_req *) calloc(1,
sizeof(
struct fuse_req));
164 fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate request\n");
169 pthread_mutex_init(&req->lock, NULL);
176static int fuse_send_msg(
struct fuse_session *se,
struct fuse_chan *ch,
177 struct iovec *iov,
int count)
179 struct fuse_out_header *out = iov[0].iov_base;
182 out->len = iov_length(iov, count);
184 if (out->unique == 0) {
185 fuse_log(FUSE_LOG_DEBUG,
"NOTIFY: code=%d length=%u\n",
186 out->error, out->len);
187 }
else if (out->error) {
189 " unique: %llu, error: %i (%s), outsize: %i\n",
190 (
unsigned long long) out->unique, out->error,
191 strerror(-out->error), out->len);
194 " unique: %llu, success, outsize: %i\n",
195 (
unsigned long long) out->unique, out->len);
203 res = se->io->writev(ch ? ch->fd : se->fd, iov, count,
206 res = writev(ch ? ch->fd : se->fd, iov, count);
213 perror(
"fuse: writing device");
221int fuse_send_reply_iov_nofree(
fuse_req_t req,
int error,
struct iovec *iov,
224 struct fuse_out_header out;
226#if __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 32
227 const char *str = strerrordesc_np(error * -1);
228 if ((str == NULL && error != 0) || error > 0) {
230 if (error <= -1000 || error > 0) {
232 fuse_log(FUSE_LOG_ERR,
"fuse: bad error value: %i\n", error);
236 out.unique = req->unique;
239 iov[0].iov_base = &out;
240 iov[0].iov_len =
sizeof(
struct fuse_out_header);
242 return fuse_send_msg(req->se, req->ch, iov, count);
245static int send_reply_iov(
fuse_req_t req,
int error,
struct iovec *iov,
250 res = fuse_send_reply_iov_nofree(req, error, iov, count);
255static int send_reply(
fuse_req_t req,
int error,
const void *arg,
261 iov[1].iov_base = (
void *) arg;
262 iov[1].iov_len = argsize;
265 return send_reply_iov(req, error, iov, count);
271 struct iovec *padded_iov;
273 padded_iov = malloc((count + 1) *
sizeof(
struct iovec));
274 if (padded_iov == NULL)
277 memcpy(padded_iov + 1, iov, count *
sizeof(
struct iovec));
280 res = send_reply_iov(req, 0, padded_iov, count);
290 const char *name,
const struct stat *stbuf, off_t off)
295 size_t entlen_padded;
296 struct fuse_dirent *dirent;
298 namelen = strlen(name);
299 entlen = FUSE_NAME_OFFSET + namelen;
300 entlen_padded = FUSE_DIRENT_ALIGN(entlen);
302 if ((buf == NULL) || (entlen_padded > bufsize))
303 return entlen_padded;
305 dirent = (
struct fuse_dirent*) buf;
306 dirent->ino = stbuf->st_ino;
308 dirent->namelen = namelen;
309 dirent->type = (stbuf->st_mode & S_IFMT) >> 12;
310 memcpy(dirent->name, name, namelen);
311 memset(dirent->name + namelen, 0, entlen_padded - entlen);
313 return entlen_padded;
316static void convert_statfs(
const struct statvfs *stbuf,
317 struct fuse_kstatfs *kstatfs)
319 kstatfs->bsize = stbuf->f_bsize;
320 kstatfs->frsize = stbuf->f_frsize;
321 kstatfs->blocks = stbuf->f_blocks;
322 kstatfs->bfree = stbuf->f_bfree;
323 kstatfs->bavail = stbuf->f_bavail;
324 kstatfs->files = stbuf->f_files;
325 kstatfs->ffree = stbuf->f_ffree;
326 kstatfs->namelen = stbuf->f_namemax;
329static int send_reply_ok(
fuse_req_t req,
const void *arg,
size_t argsize)
331 return send_reply(req, 0, arg, argsize);
336 return send_reply(req, -err, NULL, 0);
344static unsigned long calc_timeout_sec(
double t)
346 if (t > (
double) ULONG_MAX)
351 return (
unsigned long) t;
354static unsigned int calc_timeout_nsec(
double t)
356 double f = t - (double) calc_timeout_sec(t);
359 else if (f >= 0.999999999)
362 return (
unsigned int) (f * 1.0e9);
365static void fill_entry(
struct fuse_entry_out *arg,
368 arg->nodeid = e->
ino;
373 arg->attr_valid_nsec = calc_timeout_nsec(e->
attr_timeout);
374 convert_stat(&e->
attr, &arg->attr);
386 size_t entlen_padded;
388 namelen = strlen(name);
389 entlen = FUSE_NAME_OFFSET_DIRENTPLUS + namelen;
390 entlen_padded = FUSE_DIRENT_ALIGN(entlen);
391 if ((buf == NULL) || (entlen_padded > bufsize))
392 return entlen_padded;
394 struct fuse_direntplus *dp = (
struct fuse_direntplus *) buf;
395 memset(&dp->entry_out, 0,
sizeof(dp->entry_out));
396 fill_entry(&dp->entry_out, e);
398 struct fuse_dirent *dirent = &dp->dirent;
399 dirent->ino = e->
attr.st_ino;
401 dirent->namelen = namelen;
402 dirent->type = (e->
attr.st_mode & S_IFMT) >> 12;
403 memcpy(dirent->name, name, namelen);
404 memset(dirent->name + namelen, 0, entlen_padded - entlen);
406 return entlen_padded;
409static void fill_open(
struct fuse_open_out *arg,
415 arg->open_flags |= FOPEN_PASSTHROUGH;
418 arg->open_flags |= FOPEN_DIRECT_IO;
420 arg->open_flags |= FOPEN_KEEP_CACHE;
422 arg->open_flags |= FOPEN_CACHE_DIR;
424 arg->open_flags |= FOPEN_NONSEEKABLE;
426 arg->open_flags |= FOPEN_NOFLUSH;
428 arg->open_flags |= FOPEN_PARALLEL_DIRECT_WRITES;
433 struct fuse_entry_out arg;
434 size_t size = req->se->conn.proto_minor < 9 ?
435 FUSE_COMPAT_ENTRY_OUT_SIZE :
sizeof(arg);
439 if (!e->
ino && req->se->conn.proto_minor < 4)
442 memset(&arg, 0,
sizeof(arg));
444 return send_reply_ok(req, &arg, size);
450 alignas(uint64_t)
char buf[
sizeof(
struct fuse_entry_out) +
sizeof(
struct fuse_open_out)];
451 size_t entrysize = req->se->conn.proto_minor < 9 ?
452 FUSE_COMPAT_ENTRY_OUT_SIZE :
sizeof(
struct fuse_entry_out);
453 struct fuse_entry_out *earg = (
struct fuse_entry_out *) buf;
454 struct fuse_open_out *oarg = (
struct fuse_open_out *) (buf + entrysize);
456 memset(buf, 0,
sizeof(buf));
459 return send_reply_ok(req, buf,
460 entrysize +
sizeof(
struct fuse_open_out));
466 struct fuse_attr_out arg;
467 size_t size = req->se->conn.proto_minor < 9 ?
468 FUSE_COMPAT_ATTR_OUT_SIZE :
sizeof(arg);
470 memset(&arg, 0,
sizeof(arg));
471 arg.attr_valid = calc_timeout_sec(attr_timeout);
472 arg.attr_valid_nsec = calc_timeout_nsec(attr_timeout);
473 convert_stat(attr, &arg.attr);
475 return send_reply_ok(req, &arg, size);
480 return send_reply_ok(req, linkname, strlen(linkname));
485 struct fuse_backing_map map = { .fd = fd };
488 ret = ioctl(req->se->fd, FUSE_DEV_IOC_BACKING_OPEN, &map);
490 fuse_log(FUSE_LOG_ERR,
"fuse: passthrough_open: %s\n", strerror(errno));
497int fuse_passthrough_close(
fuse_req_t req,
int backing_id)
501 ret = ioctl(req->se->fd, FUSE_DEV_IOC_BACKING_CLOSE, &backing_id);
503 fuse_log(FUSE_LOG_ERR,
"fuse: passthrough_close: %s\n", strerror(errno));
510 struct fuse_open_out arg;
512 memset(&arg, 0,
sizeof(arg));
514 return send_reply_ok(req, &arg,
sizeof(arg));
519 struct fuse_write_out arg;
521 memset(&arg, 0,
sizeof(arg));
524 return send_reply_ok(req, &arg,
sizeof(arg));
529 return send_reply_ok(req, buf, size);
532static int fuse_send_data_iov_fallback(
struct fuse_session *se,
533 struct fuse_chan *ch,
534 struct iovec *iov,
int iov_count,
538 struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len);
543 if (
buf->count == 1 &&
buf->idx == 0 &&
buf->off == 0 &&
548 iov[iov_count].iov_base =
buf->buf[0].
mem;
549 iov[iov_count].iov_len = len;
551 return fuse_send_msg(se, ch, iov, iov_count);
554 res = posix_memalign(&mbuf, pagesize, len);
558 mem_buf.
buf[0].
mem = mbuf;
566 iov[iov_count].iov_base = mbuf;
567 iov[iov_count].iov_len = len;
569 res = fuse_send_msg(se, ch, iov, iov_count);
581static void fuse_ll_pipe_free(
struct fuse_ll_pipe *llp)
589#if !defined(HAVE_PIPE2) || !defined(O_CLOEXEC)
590static int fuse_pipe(
int fds[2])
597 if (fcntl(fds[0], F_SETFL, O_NONBLOCK) == -1 ||
598 fcntl(fds[1], F_SETFL, O_NONBLOCK) == -1 ||
599 fcntl(fds[0], F_SETFD, FD_CLOEXEC) == -1 ||
600 fcntl(fds[1], F_SETFD, FD_CLOEXEC) == -1) {
608static int fuse_pipe(
int fds[2])
610 return pipe2(fds, O_CLOEXEC | O_NONBLOCK);
614static struct fuse_ll_pipe *fuse_ll_get_pipe(
struct fuse_session *se)
616 struct fuse_ll_pipe *llp = pthread_getspecific(se->pipe_key);
620 llp = malloc(
sizeof(
struct fuse_ll_pipe));
624 res = fuse_pipe(llp->pipe);
633 llp->size = pagesize * 16;
636 pthread_setspecific(se->pipe_key, llp);
643static void fuse_ll_clear_pipe(
struct fuse_session *se)
645 struct fuse_ll_pipe *llp = pthread_getspecific(se->pipe_key);
647 pthread_setspecific(se->pipe_key, NULL);
648 fuse_ll_pipe_free(llp);
652#if defined(HAVE_SPLICE) && defined(HAVE_VMSPLICE)
653static int read_back(
int fd,
char *buf,
size_t len)
657 res = read(fd, buf, len);
659 fuse_log(FUSE_LOG_ERR,
"fuse: internal error: failed to read back from pipe: %s\n", strerror(errno));
663 fuse_log(FUSE_LOG_ERR,
"fuse: internal error: short read back from pipe: %i from %zi\n", res, len);
669static int grow_pipe_to_max(
int pipefd)
676 maxfd = open(
"/proc/sys/fs/pipe-max-size", O_RDONLY);
680 res = read(maxfd, buf,
sizeof(buf) - 1);
691 res = libfuse_strtol(buf, &max);
694 res = fcntl(pipefd, F_SETPIPE_SZ, max);
700static int fuse_send_data_iov(
struct fuse_session *se,
struct fuse_chan *ch,
701 struct iovec *iov,
int iov_count,
706 struct fuse_out_header *out = iov[0].iov_base;
707 struct fuse_ll_pipe *llp;
710 size_t total_buf_size;
713 struct fuse_bufvec pipe_buf = FUSE_BUFVEC_INIT(len);
715 if (se->broken_splice_nonblock)
725 total_buf_size -=
buf->off;
727 if (total_buf_size < 2 * pagesize)
730 if (se->conn.proto_minor < 14 ||
734 llp = fuse_ll_get_pipe(se);
739 headerlen = iov_length(iov, iov_count);
741 out->len = headerlen + len;
747 pipesize = pagesize * (iov_count +
buf->count + 1) + out->len;
749 if (llp->size < pipesize) {
751 res = fcntl(llp->pipe[0], F_SETPIPE_SZ, pipesize);
753 res = grow_pipe_to_max(llp->pipe[0]);
761 if (llp->size < pipesize)
766 res = vmsplice(llp->pipe[1], iov, iov_count, SPLICE_F_NONBLOCK);
770 if (res != headerlen) {
772 fuse_log(FUSE_LOG_ERR,
"fuse: short vmsplice to pipe: %u/%zu\n", res,
778 pipe_buf.
buf[0].
fd = llp->pipe[1];
783 if (res == -EAGAIN || res == -EINVAL) {
795 se->broken_splice_nonblock = 1;
797 pthread_setspecific(se->pipe_key, NULL);
798 fuse_ll_pipe_free(llp);
805 if (res != 0 && res < len) {
806 struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len);
808 size_t now_len = res;
818 res = posix_memalign(&mbuf, pagesize, len);
822 mem_buf.
buf[0].
mem = mbuf;
823 mem_buf.
off = now_len;
827 size_t extra_len = res;
833 tmpbuf = malloc(headerlen);
834 if (tmpbuf == NULL) {
839 res = read_back(llp->pipe[0], tmpbuf, headerlen);
845 res = read_back(llp->pipe[0], mbuf, now_len);
850 len = now_len + extra_len;
851 iov[iov_count].iov_base = mbuf;
852 iov[iov_count].iov_len = len;
854 res = fuse_send_msg(se, ch, iov, iov_count);
862 out->len = headerlen + len;
866 " unique: %llu, success, outsize: %i (splice)\n",
867 (
unsigned long long) out->unique, out->len);
873 splice_flags |= SPLICE_F_MOVE;
875 if (se->io != NULL && se->io->splice_send != NULL) {
876 res = se->io->splice_send(llp->pipe[0], NULL,
877 ch ? ch->fd : se->fd, NULL, out->len,
878 splice_flags, se->userdata);
880 res = splice(llp->pipe[0], NULL, ch ? ch->fd : se->fd, NULL,
881 out->len, splice_flags);
885 perror(
"fuse: splice from pipe");
888 if (res != out->len) {
890 fuse_log(FUSE_LOG_ERR,
"fuse: short splice from pipe: %u/%u\n",
897 fuse_ll_clear_pipe(se);
901 return fuse_send_data_iov_fallback(se, ch, iov, iov_count,
buf, len);
904static int fuse_send_data_iov(
struct fuse_session *se,
struct fuse_chan *ch,
905 struct iovec *iov,
int iov_count,
911 return fuse_send_data_iov_fallback(se, ch, iov, iov_count,
buf, len);
919 struct fuse_out_header out;
922 iov[0].iov_base = &out;
923 iov[0].iov_len =
sizeof(
struct fuse_out_header);
925 out.unique = req->unique;
928 res = fuse_send_data_iov(req->se, req->ch, iov, 1, bufv, flags);
939 struct fuse_statfs_out arg;
940 size_t size = req->se->conn.proto_minor < 4 ?
941 FUSE_COMPAT_STATFS_SIZE :
sizeof(arg);
943 memset(&arg, 0,
sizeof(arg));
944 convert_statfs(stbuf, &arg.st);
946 return send_reply_ok(req, &arg, size);
951 struct fuse_getxattr_out arg;
953 memset(&arg, 0,
sizeof(arg));
956 return send_reply_ok(req, &arg,
sizeof(arg));
961 struct fuse_lk_out arg;
963 memset(&arg, 0,
sizeof(arg));
964 arg.lk.type = lock->l_type;
965 if (lock->l_type != F_UNLCK) {
966 arg.lk.start = lock->l_start;
967 if (lock->l_len == 0)
968 arg.lk.end = OFFSET_MAX;
970 arg.lk.end = lock->l_start + lock->l_len - 1;
972 arg.lk.pid = lock->l_pid;
973 return send_reply_ok(req, &arg,
sizeof(arg));
978 struct fuse_bmap_out arg;
980 memset(&arg, 0,
sizeof(arg));
983 return send_reply_ok(req, &arg,
sizeof(arg));
986static struct fuse_ioctl_iovec *fuse_ioctl_iovec_copy(
const struct iovec *iov,
989 struct fuse_ioctl_iovec *fiov;
992 fiov = malloc(
sizeof(fiov[0]) * count);
996 for (i = 0; i < count; i++) {
997 fiov[i].base = (uintptr_t) iov[i].iov_base;
998 fiov[i].len = iov[i].iov_len;
1005 const struct iovec *in_iov,
size_t in_count,
1006 const struct iovec *out_iov,
size_t out_count)
1008 struct fuse_ioctl_out arg;
1009 struct fuse_ioctl_iovec *in_fiov = NULL;
1010 struct fuse_ioctl_iovec *out_fiov = NULL;
1011 struct iovec iov[4];
1015 memset(&arg, 0,
sizeof(arg));
1016 arg.flags |= FUSE_IOCTL_RETRY;
1017 arg.in_iovs = in_count;
1018 arg.out_iovs = out_count;
1019 iov[count].iov_base = &arg;
1020 iov[count].iov_len =
sizeof(arg);
1023 if (req->se->conn.proto_minor < 16) {
1025 iov[count].iov_base = (
void *)in_iov;
1026 iov[count].iov_len =
sizeof(in_iov[0]) * in_count;
1031 iov[count].iov_base = (
void *)out_iov;
1032 iov[count].iov_len =
sizeof(out_iov[0]) * out_count;
1037 if (
sizeof(
void *) == 4 && req->ioctl_64bit) {
1043 in_fiov = fuse_ioctl_iovec_copy(in_iov, in_count);
1047 iov[count].iov_base = (
void *)in_fiov;
1048 iov[count].iov_len =
sizeof(in_fiov[0]) * in_count;
1052 out_fiov = fuse_ioctl_iovec_copy(out_iov, out_count);
1056 iov[count].iov_base = (
void *)out_fiov;
1057 iov[count].iov_len =
sizeof(out_fiov[0]) * out_count;
1062 res = send_reply_iov(req, 0, iov, count);
1076 struct fuse_ioctl_out arg;
1077 struct iovec iov[3];
1080 memset(&arg, 0,
sizeof(arg));
1081 arg.result = result;
1082 iov[count].iov_base = &arg;
1083 iov[count].iov_len =
sizeof(arg);
1087 iov[count].iov_base = (
char *) buf;
1088 iov[count].iov_len = size;
1092 return send_reply_iov(req, 0, iov, count);
1098 struct iovec *padded_iov;
1099 struct fuse_ioctl_out arg;
1102 padded_iov = malloc((count + 2) *
sizeof(
struct iovec));
1103 if (padded_iov == NULL)
1106 memset(&arg, 0,
sizeof(arg));
1107 arg.result = result;
1108 padded_iov[1].iov_base = &arg;
1109 padded_iov[1].iov_len =
sizeof(arg);
1111 memcpy(&padded_iov[2], iov, count *
sizeof(
struct iovec));
1113 res = send_reply_iov(req, 0, padded_iov, count + 2);
1121 struct fuse_poll_out arg;
1123 memset(&arg, 0,
sizeof(arg));
1124 arg.revents = revents;
1126 return send_reply_ok(req, &arg,
sizeof(arg));
1131 struct fuse_lseek_out arg;
1133 memset(&arg, 0,
sizeof(arg));
1136 return send_reply_ok(req, &arg,
sizeof(arg));
1141 char *name = (
char *) inarg;
1143 if (req->se->op.lookup)
1144 req->se->op.lookup(req, nodeid, name);
1151 struct fuse_forget_in *arg = (
struct fuse_forget_in *) inarg;
1153 if (req->se->op.forget)
1154 req->se->op.forget(req, nodeid, arg->nlookup);
1162 struct fuse_batch_forget_in *arg = (
void *) inarg;
1163 struct fuse_forget_one *param = (
void *) PARAM(arg);
1168 if (req->se->op.forget_multi) {
1169 req->se->op.forget_multi(req, arg->count,
1170 (
struct fuse_forget_data *) param);
1171 }
else if (req->se->op.forget) {
1172 for (i = 0; i < arg->count; i++) {
1173 struct fuse_forget_one *forget = ¶m[i];
1174 struct fuse_req *dummy_req;
1176 dummy_req = fuse_ll_alloc_req(req->se);
1177 if (dummy_req == NULL)
1180 dummy_req->unique = req->unique;
1181 dummy_req->ctx = req->ctx;
1182 dummy_req->ch = NULL;
1184 req->se->op.forget(dummy_req, forget->nodeid,
1198 if (req->se->conn.proto_minor >= 9) {
1199 struct fuse_getattr_in *arg = (
struct fuse_getattr_in *) inarg;
1201 if (arg->getattr_flags & FUSE_GETATTR_FH) {
1202 memset(&fi, 0,
sizeof(fi));
1208 if (req->se->op.getattr)
1209 req->se->op.getattr(req, nodeid, fip);
1216 struct fuse_setattr_in *arg = (
struct fuse_setattr_in *) inarg;
1218 if (req->se->op.setattr) {
1222 memset(&stbuf, 0,
sizeof(stbuf));
1223 convert_attr(arg, &stbuf);
1224 if (arg->valid & FATTR_FH) {
1225 arg->valid &= ~FATTR_FH;
1226 memset(&fi_store, 0,
sizeof(fi_store));
1231 FUSE_SET_ATTR_MODE |
1234 FUSE_SET_ATTR_SIZE |
1235 FUSE_SET_ATTR_ATIME |
1236 FUSE_SET_ATTR_MTIME |
1237 FUSE_SET_ATTR_KILL_SUID |
1238 FUSE_SET_ATTR_KILL_SGID |
1239 FUSE_SET_ATTR_ATIME_NOW |
1240 FUSE_SET_ATTR_MTIME_NOW |
1241 FUSE_SET_ATTR_CTIME;
1243 req->se->op.setattr(req, nodeid, &stbuf, arg->valid, fi);
1250 struct fuse_access_in *arg = (
struct fuse_access_in *) inarg;
1252 if (req->se->op.access)
1253 req->se->op.access(req, nodeid, arg->mask);
1262 if (req->se->op.readlink)
1263 req->se->op.readlink(req, nodeid);
1270 struct fuse_mknod_in *arg = (
struct fuse_mknod_in *) inarg;
1271 char *name = PARAM(arg);
1273 if (req->se->conn.proto_minor >= 12)
1274 req->ctx.umask = arg->umask;
1276 name = (
char *) inarg + FUSE_COMPAT_MKNOD_IN_SIZE;
1278 if (req->se->op.mknod)
1279 req->se->op.mknod(req, nodeid, name, arg->mode, arg->rdev);
1286 struct fuse_mkdir_in *arg = (
struct fuse_mkdir_in *) inarg;
1288 if (req->se->conn.proto_minor >= 12)
1289 req->ctx.umask = arg->umask;
1291 if (req->se->op.mkdir)
1292 req->se->op.mkdir(req, nodeid, PARAM(arg), arg->mode);
1299 char *name = (
char *) inarg;
1301 if (req->se->op.unlink)
1302 req->se->op.unlink(req, nodeid, name);
1309 char *name = (
char *) inarg;
1311 if (req->se->op.rmdir)
1312 req->se->op.rmdir(req, nodeid, name);
1319 char *name = (
char *) inarg;
1320 char *linkname = ((
char *) inarg) + strlen((
char *) inarg) + 1;
1322 if (req->se->op.symlink)
1323 req->se->op.symlink(req, linkname, nodeid, name);
1330 struct fuse_rename_in *arg = (
struct fuse_rename_in *) inarg;
1331 char *oldname = PARAM(arg);
1332 char *newname = oldname + strlen(oldname) + 1;
1334 if (req->se->op.rename)
1335 req->se->op.rename(req, nodeid, oldname, arg->newdir, newname,
1343 struct fuse_rename2_in *arg = (
struct fuse_rename2_in *) inarg;
1344 char *oldname = PARAM(arg);
1345 char *newname = oldname + strlen(oldname) + 1;
1347 if (req->se->op.rename)
1348 req->se->op.rename(req, nodeid, oldname, arg->newdir, newname,
1356 struct fuse_link_in *arg = (
struct fuse_link_in *) inarg;
1358 if (req->se->op.link)
1359 req->se->op.link(req, arg->oldnodeid, nodeid, PARAM(arg));
1366 struct fuse_create_in *arg = (
struct fuse_create_in *) inarg;
1368 if (req->se->op.tmpfile) {
1371 memset(&fi, 0,
sizeof(fi));
1372 fi.
flags = arg->flags;
1374 if (req->se->conn.proto_minor >= 12)
1375 req->ctx.umask = arg->umask;
1377 req->se->op.tmpfile(req, nodeid, arg->mode, &fi);
1384 struct fuse_create_in *arg = (
struct fuse_create_in *) inarg;
1386 if (req->se->op.create) {
1388 char *name = PARAM(arg);
1390 memset(&fi, 0,
sizeof(fi));
1391 fi.
flags = arg->flags;
1393 if (req->se->conn.proto_minor >= 12)
1394 req->ctx.umask = arg->umask;
1396 name = (
char *) inarg +
sizeof(
struct fuse_open_in);
1398 req->se->op.create(req, nodeid, name, arg->mode, &fi);
1405 struct fuse_open_in *arg = (
struct fuse_open_in *) inarg;
1408 memset(&fi, 0,
sizeof(fi));
1409 fi.
flags = arg->flags;
1411 if (req->se->op.open)
1412 req->se->op.open(req, nodeid, &fi);
1421 struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
1423 if (req->se->op.read) {
1426 memset(&fi, 0,
sizeof(fi));
1428 if (req->se->conn.proto_minor >= 9) {
1430 fi.
flags = arg->flags;
1432 req->se->op.read(req, nodeid, arg->size, arg->offset, &fi);
1439 struct fuse_write_in *arg = (
struct fuse_write_in *) inarg;
1443 memset(&fi, 0,
sizeof(fi));
1445 fi.
writepage = (arg->write_flags & FUSE_WRITE_CACHE) != 0;
1447 if (req->se->conn.proto_minor < 9) {
1448 param = ((
char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE;
1451 fi.
flags = arg->flags;
1455 if (req->se->op.write)
1456 req->se->op.write(req, nodeid, param, arg->size,
1465 struct fuse_session *se = req->se;
1470 struct fuse_write_in *arg = (
struct fuse_write_in *) inarg;
1473 memset(&fi, 0,
sizeof(fi));
1475 fi.
writepage = arg->write_flags & FUSE_WRITE_CACHE;
1477 if (se->conn.proto_minor < 9) {
1478 bufv.
buf[0].
mem = ((
char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE;
1479 bufv.
buf[0].
size -=
sizeof(
struct fuse_in_header) +
1480 FUSE_COMPAT_WRITE_IN_SIZE;
1484 fi.
flags = arg->flags;
1486 bufv.
buf[0].
mem = PARAM(arg);
1488 bufv.
buf[0].
size -=
sizeof(
struct fuse_in_header) +
1489 sizeof(struct fuse_write_in);
1491 if (bufv.
buf[0].
size < arg->size) {
1492 fuse_log(FUSE_LOG_ERR,
"fuse: do_write_buf: buffer size too small\n");
1498 se->op.write_buf(req, nodeid, &bufv, arg->offset, &fi);
1503 fuse_ll_clear_pipe(se);
1508 struct fuse_flush_in *arg = (
struct fuse_flush_in *) inarg;
1511 memset(&fi, 0,
sizeof(fi));
1514 if (req->se->conn.proto_minor >= 7)
1517 if (req->se->op.flush)
1518 req->se->op.flush(req, nodeid, &fi);
1525 struct fuse_release_in *arg = (
struct fuse_release_in *) inarg;
1528 memset(&fi, 0,
sizeof(fi));
1529 fi.
flags = arg->flags;
1531 if (req->se->conn.proto_minor >= 8) {
1532 fi.
flush = (arg->release_flags & FUSE_RELEASE_FLUSH) ? 1 : 0;
1535 if (arg->release_flags & FUSE_RELEASE_FLOCK_UNLOCK) {
1536 fi.flock_release = 1;
1540 if (req->se->op.release)
1541 req->se->op.release(req, nodeid, &fi);
1548 struct fuse_fsync_in *arg = (
struct fuse_fsync_in *) inarg;
1550 int datasync = arg->fsync_flags & 1;
1552 memset(&fi, 0,
sizeof(fi));
1555 if (req->se->op.fsync)
1556 req->se->op.fsync(req, nodeid, datasync, &fi);
1563 struct fuse_open_in *arg = (
struct fuse_open_in *) inarg;
1566 memset(&fi, 0,
sizeof(fi));
1567 fi.
flags = arg->flags;
1569 if (req->se->op.opendir)
1570 req->se->op.opendir(req, nodeid, &fi);
1579 struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
1582 memset(&fi, 0,
sizeof(fi));
1585 if (req->se->op.readdir)
1586 req->se->op.readdir(req, nodeid, arg->size, arg->offset, &fi);
1593 struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
1596 memset(&fi, 0,
sizeof(fi));
1599 if (req->se->op.readdirplus)
1600 req->se->op.readdirplus(req, nodeid, arg->size, arg->offset, &fi);
1607 struct fuse_release_in *arg = (
struct fuse_release_in *) inarg;
1610 memset(&fi, 0,
sizeof(fi));
1611 fi.
flags = arg->flags;
1614 if (req->se->op.releasedir)
1615 req->se->op.releasedir(req, nodeid, &fi);
1622 struct fuse_fsync_in *arg = (
struct fuse_fsync_in *) inarg;
1624 int datasync = arg->fsync_flags & 1;
1626 memset(&fi, 0,
sizeof(fi));
1629 if (req->se->op.fsyncdir)
1630 req->se->op.fsyncdir(req, nodeid, datasync, &fi);
1640 if (req->se->op.statfs)
1641 req->se->op.statfs(req, nodeid);
1643 struct statvfs buf = {
1653 struct fuse_session *se = req->se;
1655 struct fuse_setxattr_in *arg = (
struct fuse_setxattr_in *) inarg;
1656 char *name = xattr_ext ? PARAM(arg) :
1657 (char *)arg + FUSE_COMPAT_SETXATTR_IN_SIZE;
1658 char *value = name + strlen(name) + 1;
1661 if (req->se->op.setxattr)
1662 req->se->op.setxattr(req, nodeid, name, value, arg->size,
1670 struct fuse_getxattr_in *arg = (
struct fuse_getxattr_in *) inarg;
1672 if (req->se->op.getxattr)
1673 req->se->op.getxattr(req, nodeid, PARAM(arg), arg->size);
1680 struct fuse_getxattr_in *arg = (
struct fuse_getxattr_in *) inarg;
1682 if (req->se->op.listxattr)
1683 req->se->op.listxattr(req, nodeid, arg->size);
1690 char *name = (
char *) inarg;
1692 if (req->se->op.removexattr)
1693 req->se->op.removexattr(req, nodeid, name);
1698static void convert_fuse_file_lock(
struct fuse_file_lock *fl,
1699 struct flock *flock)
1701 memset(flock, 0,
sizeof(
struct flock));
1702 flock->l_type = fl->type;
1703 flock->l_whence = SEEK_SET;
1704 flock->l_start = fl->start;
1705 if (fl->end == OFFSET_MAX)
1708 flock->l_len = fl->end - fl->start + 1;
1709 flock->l_pid = fl->pid;
1714 struct fuse_lk_in *arg = (
struct fuse_lk_in *) inarg;
1718 memset(&fi, 0,
sizeof(fi));
1722 convert_fuse_file_lock(&arg->lk, &flock);
1723 if (req->se->op.getlk)
1724 req->se->op.getlk(req, nodeid, &fi, &flock);
1730 const void *inarg,
int sleep)
1732 struct fuse_lk_in *arg = (
struct fuse_lk_in *) inarg;
1736 memset(&fi, 0,
sizeof(fi));
1740 if (arg->lk_flags & FUSE_LK_FLOCK) {
1743 switch (arg->lk.type) {
1757 if (req->se->op.flock)
1758 req->se->op.flock(req, nodeid, &fi, op);
1762 convert_fuse_file_lock(&arg->lk, &flock);
1763 if (req->se->op.setlk)
1764 req->se->op.setlk(req, nodeid, &fi, &flock, sleep);
1772 do_setlk_common(req, nodeid, inarg, 0);
1777 do_setlk_common(req, nodeid, inarg, 1);
1780static int find_interrupted(
struct fuse_session *se,
struct fuse_req *req)
1782 struct fuse_req *curr;
1784 for (curr = se->list.next; curr != &se->list; curr = curr->next) {
1785 if (curr->unique == req->u.i.unique) {
1790 pthread_mutex_unlock(&se->lock);
1793 pthread_mutex_lock(&curr->lock);
1794 pthread_mutex_lock(&se->lock);
1795 curr->interrupted = 1;
1796 func = curr->u.ni.func;
1797 data = curr->u.ni.data;
1798 pthread_mutex_unlock(&se->lock);
1801 pthread_mutex_unlock(&curr->lock);
1803 pthread_mutex_lock(&se->lock);
1805 if (!curr->ref_cnt) {
1812 for (curr = se->interrupts.next; curr != &se->interrupts;
1813 curr = curr->next) {
1814 if (curr->u.i.unique == req->u.i.unique)
1822 struct fuse_interrupt_in *arg = (
struct fuse_interrupt_in *) inarg;
1823 struct fuse_session *se = req->se;
1827 fuse_log(FUSE_LOG_DEBUG,
"INTERRUPT: %llu\n",
1828 (
unsigned long long) arg->unique);
1830 req->u.i.unique = arg->unique;
1832 pthread_mutex_lock(&se->lock);
1833 if (find_interrupted(se, req)) {
1834 fuse_chan_put(req->ch);
1838 list_add_req(req, &se->interrupts);
1839 pthread_mutex_unlock(&se->lock);
1842static struct fuse_req *check_interrupt(
struct fuse_session *se,
1843 struct fuse_req *req)
1845 struct fuse_req *curr;
1847 for (curr = se->interrupts.next; curr != &se->interrupts;
1848 curr = curr->next) {
1849 if (curr->u.i.unique == req->unique) {
1850 req->interrupted = 1;
1852 fuse_chan_put(curr->ch);
1858 curr = se->interrupts.next;
1859 if (curr != &se->interrupts) {
1861 list_init_req(curr);
1869 struct fuse_bmap_in *arg = (
struct fuse_bmap_in *) inarg;
1871 if (req->se->op.bmap)
1872 req->se->op.bmap(req, nodeid, arg->blocksize, arg->block);
1879 struct fuse_ioctl_in *arg = (
struct fuse_ioctl_in *) inarg;
1880 unsigned int flags = arg->flags;
1881 void *in_buf = arg->in_size ? PARAM(arg) : NULL;
1884 if (
flags & FUSE_IOCTL_DIR &&
1890 memset(&fi, 0,
sizeof(fi));
1893 if (
sizeof(
void *) == 4 && req->se->conn.proto_minor >= 16 &&
1894 !(
flags & FUSE_IOCTL_32BIT)) {
1895 req->ioctl_64bit = 1;
1898 if (req->se->op.ioctl)
1899 req->se->op.ioctl(req, nodeid, arg->cmd,
1900 (
void *)(uintptr_t)arg->arg, &fi,
flags,
1901 in_buf, arg->in_size, arg->out_size);
1913 struct fuse_poll_in *arg = (
struct fuse_poll_in *) inarg;
1916 memset(&fi, 0,
sizeof(fi));
1920 if (req->se->op.poll) {
1921 struct fuse_pollhandle *ph = NULL;
1923 if (arg->flags & FUSE_POLL_SCHEDULE_NOTIFY) {
1924 ph = malloc(
sizeof(
struct fuse_pollhandle));
1933 req->se->op.poll(req, nodeid, &fi, ph);
1941 struct fuse_fallocate_in *arg = (
struct fuse_fallocate_in *) inarg;
1944 memset(&fi, 0,
sizeof(fi));
1947 if (req->se->op.fallocate)
1948 req->se->op.fallocate(req, nodeid, arg->mode, arg->offset, arg->length, &fi);
1955 struct fuse_copy_file_range_in *arg = (
struct fuse_copy_file_range_in *) inarg;
1958 memset(&fi_in, 0,
sizeof(fi_in));
1959 fi_in.fh = arg->fh_in;
1961 memset(&fi_out, 0,
sizeof(fi_out));
1962 fi_out.fh = arg->fh_out;
1965 if (req->se->op.copy_file_range)
1966 req->se->op.copy_file_range(req, nodeid_in, arg->off_in,
1967 &fi_in, arg->nodeid_out,
1968 arg->off_out, &fi_out, arg->len,
1976 struct fuse_lseek_in *arg = (
struct fuse_lseek_in *) inarg;
1979 memset(&fi, 0,
sizeof(fi));
1982 if (req->se->op.lseek)
1983 req->se->op.lseek(req, nodeid, arg->offset, arg->whence, &fi);
1988static bool want_flags_valid(uint64_t capable, uint64_t want)
1990 uint64_t unknown_flags = want & (~capable);
1991 if (unknown_flags != 0) {
1993 "fuse: unknown connection 'want' flags: 0x%08lx\n",
2003static inline int convert_to_conn_want_ext(
struct fuse_conn_info *conn,
2004 uint64_t want_ext_default)
2007 if (conn->
want != 0) {
2008 if (conn->
want_ext != want_ext_default) {
2010 "fuse: both 'want' and 'want_ext' are set\n");
2021static __attribute__((no_sanitize(
"thread")))
2024 struct fuse_init_in *arg = (
struct fuse_init_in *) inarg;
2025 struct fuse_init_out outarg;
2026 struct fuse_session *se = req->se;
2027 size_t bufsize = se->bufsize;
2028 size_t outargsize =
sizeof(outarg);
2029 uint64_t inargflags = 0;
2030 uint64_t outargflags = 0;
2031 bool buf_reallocable = se->buf_reallocable;
2034 fuse_log(FUSE_LOG_DEBUG,
"INIT: %u.%u\n", arg->major, arg->minor);
2035 if (arg->major == 7 && arg->minor >= 6) {
2036 fuse_log(FUSE_LOG_DEBUG,
"flags=0x%08x\n", arg->flags);
2037 fuse_log(FUSE_LOG_DEBUG,
"max_readahead=0x%08x\n",
2038 arg->max_readahead);
2041 se->conn.proto_major = arg->major;
2042 se->conn.proto_minor = arg->minor;
2043 se->conn.capable_ext = 0;
2044 se->conn.want_ext = 0;
2046 memset(&outarg, 0,
sizeof(outarg));
2047 outarg.major = FUSE_KERNEL_VERSION;
2048 outarg.minor = FUSE_KERNEL_MINOR_VERSION;
2050 if (arg->major < 7) {
2051 fuse_log(FUSE_LOG_ERR,
"fuse: unsupported protocol version: %u.%u\n",
2052 arg->major, arg->minor);
2057 if (arg->major > 7) {
2059 send_reply_ok(req, &outarg,
sizeof(outarg));
2063 if (arg->minor >= 6) {
2064 if (arg->max_readahead < se->conn.max_readahead)
2065 se->conn.max_readahead = arg->max_readahead;
2066 inargflags = arg->flags;
2067 if (inargflags & FUSE_INIT_EXT)
2068 inargflags = inargflags | (uint64_t) arg->flags2 << 32;
2069 if (inargflags & FUSE_ASYNC_READ)
2071 if (inargflags & FUSE_POSIX_LOCKS)
2073 if (inargflags & FUSE_ATOMIC_O_TRUNC)
2075 if (inargflags & FUSE_EXPORT_SUPPORT)
2077 if (inargflags & FUSE_DONT_MASK)
2079 if (inargflags & FUSE_FLOCK_LOCKS)
2081 if (inargflags & FUSE_AUTO_INVAL_DATA)
2083 if (inargflags & FUSE_DO_READDIRPLUS)
2085 if (inargflags & FUSE_READDIRPLUS_AUTO)
2087 if (inargflags & FUSE_ASYNC_DIO)
2089 if (inargflags & FUSE_WRITEBACK_CACHE)
2091 if (inargflags & FUSE_NO_OPEN_SUPPORT)
2093 if (inargflags & FUSE_PARALLEL_DIROPS)
2095 if (inargflags & FUSE_POSIX_ACL)
2097 if (inargflags & FUSE_HANDLE_KILLPRIV)
2099 if (inargflags & FUSE_HANDLE_KILLPRIV_V2)
2101 if (inargflags & FUSE_CACHE_SYMLINKS)
2103 if (inargflags & FUSE_NO_OPENDIR_SUPPORT)
2105 if (inargflags & FUSE_EXPLICIT_INVAL_DATA)
2107 if (inargflags & FUSE_SETXATTR_EXT)
2109 if (!(inargflags & FUSE_MAX_PAGES)) {
2110 size_t max_bufsize =
2111 FUSE_DEFAULT_MAX_PAGES_PER_REQ * getpagesize()
2112 + FUSE_BUFFER_HEADER_SIZE;
2113 if (bufsize > max_bufsize) {
2114 bufsize = max_bufsize;
2116 buf_reallocable =
false;
2118 if (inargflags & FUSE_DIRECT_IO_ALLOW_MMAP)
2120 if (arg->minor >= 38 || (inargflags & FUSE_HAS_EXPIRE_ONLY))
2122 if (inargflags & FUSE_PASSTHROUGH)
2124 if (inargflags & FUSE_NO_EXPORT_SUPPORT)
2127 se->conn.max_readahead = 0;
2130 if (se->conn.proto_minor >= 14) {
2133 if ((se->io == NULL) || (se->io->splice_send != NULL)) {
2138 if ((se->io == NULL) || (se->io->splice_receive != NULL)) {
2143 if (se->conn.proto_minor >= 18)
2153#define LL_SET_DEFAULT(cond, cap) \
2155 fuse_set_feature_flag(&se->conn, cap)
2163 LL_SET_DEFAULT(se->op.getlk && se->op.setlk,
2167 LL_SET_DEFAULT(se->op.readdirplus && se->op.readdir,
2175 se->conn.time_gran = 1;
2179 uint64_t want_ext_default = se->conn.want_ext;
2184 (uint32_t)(se->conn.capable_ext & 0xFFFFFFFF);
2186 se->op.init(se->userdata, &se->conn);
2193 rc = convert_to_conn_want_ext(&se->conn, want_ext_default);
2196 se->error = -EPROTO;
2202 if (!want_flags_valid(se->conn.capable_ext, se->conn.want_ext)) {
2204 se->error = -EPROTO;
2209 unsigned max_read_mo = get_max_read(se->mo);
2210 if (se->conn.max_read != max_read_mo) {
2211 fuse_log(FUSE_LOG_ERR,
"fuse: error: init() and fuse_session_new() "
2212 "requested different maximum read size (%u vs %u)\n",
2213 se->conn.max_read, max_read_mo);
2215 se->error = -EPROTO;
2220 if (bufsize < FUSE_MIN_READ_BUFFER) {
2222 "fuse: warning: buffer size too small: %zu\n",
2224 bufsize = FUSE_MIN_READ_BUFFER;
2227 if (buf_reallocable)
2229 se->conn.max_write = MIN(se->conn.max_write, bufsize - FUSE_BUFFER_HEADER_SIZE);
2230 se->bufsize = se->conn.max_write + FUSE_BUFFER_HEADER_SIZE;
2232 if (arg->flags & FUSE_MAX_PAGES) {
2233 outarg.flags |= FUSE_MAX_PAGES;
2234 outarg.max_pages = (se->conn.max_write - 1) / getpagesize() + 1;
2236 outargflags = outarg.flags;
2239 outargflags |= FUSE_BIG_WRITES;
2242 outargflags |= FUSE_ASYNC_READ;
2244 outargflags |= FUSE_POSIX_LOCKS;
2246 outargflags |= FUSE_ATOMIC_O_TRUNC;
2248 outargflags |= FUSE_EXPORT_SUPPORT;
2250 outargflags |= FUSE_DONT_MASK;
2252 outargflags |= FUSE_FLOCK_LOCKS;
2254 outargflags |= FUSE_AUTO_INVAL_DATA;
2256 outargflags |= FUSE_DO_READDIRPLUS;
2258 outargflags |= FUSE_READDIRPLUS_AUTO;
2260 outargflags |= FUSE_ASYNC_DIO;
2262 outargflags |= FUSE_WRITEBACK_CACHE;
2264 outargflags |= FUSE_PARALLEL_DIROPS;
2266 outargflags |= FUSE_POSIX_ACL;
2268 outargflags |= FUSE_HANDLE_KILLPRIV;
2270 outargflags |= FUSE_HANDLE_KILLPRIV_V2;
2272 outargflags |= FUSE_CACHE_SYMLINKS;
2274 outargflags |= FUSE_EXPLICIT_INVAL_DATA;
2276 outargflags |= FUSE_SETXATTR_EXT;
2278 outargflags |= FUSE_DIRECT_IO_ALLOW_MMAP;
2280 outargflags |= FUSE_PASSTHROUGH;
2285 outarg.max_stack_depth = se->conn.max_backing_stack_depth + 1;
2288 outargflags |= FUSE_NO_EXPORT_SUPPORT;
2290 if (inargflags & FUSE_INIT_EXT) {
2291 outargflags |= FUSE_INIT_EXT;
2292 outarg.flags2 = outargflags >> 32;
2295 outarg.flags = outargflags;
2297 outarg.max_readahead = se->conn.max_readahead;
2298 outarg.max_write = se->conn.max_write;
2299 if (se->conn.proto_minor >= 13) {
2300 if (se->conn.max_background >= (1 << 16))
2301 se->conn.max_background = (1 << 16) - 1;
2302 if (se->conn.congestion_threshold > se->conn.max_background)
2303 se->conn.congestion_threshold = se->conn.max_background;
2304 if (!se->conn.congestion_threshold) {
2305 se->conn.congestion_threshold =
2306 se->conn.max_background * 3 / 4;
2309 outarg.max_background = se->conn.max_background;
2310 outarg.congestion_threshold = se->conn.congestion_threshold;
2312 if (se->conn.proto_minor >= 23)
2313 outarg.time_gran = se->conn.time_gran;
2316 fuse_log(FUSE_LOG_DEBUG,
" INIT: %u.%u\n", outarg.major, outarg.minor);
2317 fuse_log(FUSE_LOG_DEBUG,
" flags=0x%08x\n", outarg.flags);
2318 fuse_log(FUSE_LOG_DEBUG,
" max_readahead=0x%08x\n",
2319 outarg.max_readahead);
2320 fuse_log(FUSE_LOG_DEBUG,
" max_write=0x%08x\n", outarg.max_write);
2321 fuse_log(FUSE_LOG_DEBUG,
" max_background=%i\n",
2322 outarg.max_background);
2323 fuse_log(FUSE_LOG_DEBUG,
" congestion_threshold=%i\n",
2324 outarg.congestion_threshold);
2325 fuse_log(FUSE_LOG_DEBUG,
" time_gran=%u\n",
2328 fuse_log(FUSE_LOG_DEBUG,
" max_stack_depth=%u\n",
2329 outarg.max_stack_depth);
2332 outargsize = FUSE_COMPAT_INIT_OUT_SIZE;
2333 else if (arg->minor < 23)
2334 outargsize = FUSE_COMPAT_22_INIT_OUT_SIZE;
2336 send_reply_ok(req, &outarg, outargsize);
2341 struct fuse_session *se = req->se;
2346 se->got_destroy = 1;
2349 se->op.destroy(se->userdata);
2351 send_reply_ok(req, NULL, 0);
2354static void list_del_nreq(
struct fuse_notify_req *nreq)
2356 struct fuse_notify_req *prev = nreq->prev;
2357 struct fuse_notify_req *next = nreq->next;
2362static void list_add_nreq(
struct fuse_notify_req *nreq,
2363 struct fuse_notify_req *next)
2365 struct fuse_notify_req *prev = next->prev;
2372static void list_init_nreq(
struct fuse_notify_req *nreq)
2379 const void *inarg,
const struct fuse_buf *buf)
2381 struct fuse_session *se = req->se;
2382 struct fuse_notify_req *nreq;
2383 struct fuse_notify_req *head;
2385 pthread_mutex_lock(&se->lock);
2386 head = &se->notify_list;
2387 for (nreq = head->next; nreq != head; nreq = nreq->next) {
2388 if (nreq->unique == req->unique) {
2389 list_del_nreq(nreq);
2393 pthread_mutex_unlock(&se->lock);
2396 nreq->reply(nreq, req, nodeid, inarg, buf);
2399static int send_notify_iov(
struct fuse_session *se,
int notify_code,
2400 struct iovec *iov,
int count)
2402 struct fuse_out_header out;
2408 out.error = notify_code;
2409 iov[0].iov_base = &out;
2410 iov[0].iov_len =
sizeof(
struct fuse_out_header);
2412 return fuse_send_msg(se, NULL, iov, count);
2418 struct fuse_notify_poll_wakeup_out outarg;
2419 struct iovec iov[2];
2423 iov[1].iov_base = &outarg;
2424 iov[1].iov_len =
sizeof(outarg);
2426 return send_notify_iov(ph->se, FUSE_NOTIFY_POLL, iov, 2);
2433 off_t off, off_t len)
2435 struct fuse_notify_inval_inode_out outarg;
2436 struct iovec iov[2];
2441 if (se->conn.proto_minor < 12)
2448 iov[1].iov_base = &outarg;
2449 iov[1].iov_len =
sizeof(outarg);
2451 return send_notify_iov(se, FUSE_NOTIFY_INVAL_INODE, iov, 2);
2473static int fuse_lowlevel_notify_entry(
struct fuse_session *se,
fuse_ino_t parent,
2474 const char *name,
size_t namelen,
2477 struct fuse_notify_inval_entry_out outarg;
2478 struct iovec iov[3];
2483 if (se->conn.proto_minor < 12)
2486 outarg.parent = parent;
2487 outarg.namelen = namelen;
2489 if (flags & FUSE_LL_EXPIRE_ONLY)
2490 outarg.flags |= FUSE_EXPIRE_ONLY;
2492 iov[1].iov_base = &outarg;
2493 iov[1].iov_len =
sizeof(outarg);
2494 iov[2].iov_base = (
void *)name;
2495 iov[2].iov_len = namelen + 1;
2497 return send_notify_iov(se, FUSE_NOTIFY_INVAL_ENTRY, iov, 3);
2501 const char *name,
size_t namelen)
2503 return fuse_lowlevel_notify_entry(se, parent, name, namelen, FUSE_LL_INVALIDATE);
2507 const char *name,
size_t namelen)
2515 return fuse_lowlevel_notify_entry(se, parent, name, namelen, FUSE_LL_EXPIRE_ONLY);
2521 const char *name,
size_t namelen)
2523 struct fuse_notify_delete_out outarg;
2524 struct iovec iov[3];
2529 if (se->conn.proto_minor < 18)
2532 outarg.parent = parent;
2533 outarg.child = child;
2534 outarg.namelen = namelen;
2537 iov[1].iov_base = &outarg;
2538 iov[1].iov_len =
sizeof(outarg);
2539 iov[2].iov_base = (
void *)name;
2540 iov[2].iov_len = namelen + 1;
2542 return send_notify_iov(se, FUSE_NOTIFY_DELETE, iov, 3);
2549 struct fuse_out_header out;
2550 struct fuse_notify_store_out outarg;
2551 struct iovec iov[3];
2558 if (se->conn.proto_minor < 15)
2562 out.error = FUSE_NOTIFY_STORE;
2564 outarg.nodeid = ino;
2565 outarg.offset = offset;
2569 iov[0].iov_base = &out;
2570 iov[0].iov_len =
sizeof(out);
2571 iov[1].iov_base = &outarg;
2572 iov[1].iov_len =
sizeof(outarg);
2574 res = fuse_send_data_iov(se, NULL, iov, 2, bufv, flags);
2581struct fuse_retrieve_req {
2582 struct fuse_notify_req nreq;
2586static void fuse_ll_retrieve_reply(
struct fuse_notify_req *nreq,
2591 struct fuse_session *se = req->se;
2592 struct fuse_retrieve_req *rreq =
2593 container_of(nreq,
struct fuse_retrieve_req, nreq);
2594 const struct fuse_notify_retrieve_in *arg = inarg;
2601 bufv.
buf[0].
mem = PARAM(arg);
2603 bufv.
buf[0].
size -=
sizeof(
struct fuse_in_header) +
2604 sizeof(struct fuse_notify_retrieve_in);
2606 if (bufv.
buf[0].
size < arg->size) {
2607 fuse_log(FUSE_LOG_ERR,
"fuse: retrieve reply: buffer size too small\n");
2613 if (se->op.retrieve_reply) {
2614 se->op.retrieve_reply(req, rreq->cookie, ino,
2615 arg->offset, &bufv);
2622 fuse_ll_clear_pipe(se);
2626 size_t size, off_t offset,
void *cookie)
2628 struct fuse_notify_retrieve_out outarg;
2629 struct iovec iov[2];
2630 struct fuse_retrieve_req *rreq;
2636 if (se->conn.proto_minor < 15)
2639 rreq = malloc(
sizeof(*rreq));
2643 pthread_mutex_lock(&se->lock);
2644 rreq->cookie = cookie;
2645 rreq->nreq.unique = se->notify_ctr++;
2646 rreq->nreq.reply = fuse_ll_retrieve_reply;
2647 list_add_nreq(&rreq->nreq, &se->notify_list);
2648 pthread_mutex_unlock(&se->lock);
2650 outarg.notify_unique = rreq->nreq.unique;
2651 outarg.nodeid = ino;
2652 outarg.offset = offset;
2656 iov[1].iov_base = &outarg;
2657 iov[1].iov_len =
sizeof(outarg);
2659 err = send_notify_iov(se, FUSE_NOTIFY_RETRIEVE, iov, 2);
2661 pthread_mutex_lock(&se->lock);
2662 list_del_nreq(&rreq->nreq);
2663 pthread_mutex_unlock(&se->lock);
2672 return req->se->userdata;
2683 pthread_mutex_lock(&req->lock);
2684 pthread_mutex_lock(&req->se->lock);
2685 req->u.ni.func = func;
2686 req->u.ni.data = data;
2687 pthread_mutex_unlock(&req->se->lock);
2688 if (req->interrupted && func)
2690 pthread_mutex_unlock(&req->lock);
2697 pthread_mutex_lock(&req->se->lock);
2698 interrupted = req->interrupted;
2699 pthread_mutex_unlock(&req->se->lock);
2708 [FUSE_LOOKUP] = { do_lookup,
"LOOKUP" },
2709 [FUSE_FORGET] = { do_forget,
"FORGET" },
2710 [FUSE_GETATTR] = { do_getattr,
"GETATTR" },
2711 [FUSE_SETATTR] = { do_setattr,
"SETATTR" },
2712 [FUSE_READLINK] = { do_readlink,
"READLINK" },
2713 [FUSE_SYMLINK] = { do_symlink,
"SYMLINK" },
2714 [FUSE_MKNOD] = { do_mknod,
"MKNOD" },
2715 [FUSE_MKDIR] = { do_mkdir,
"MKDIR" },
2716 [FUSE_UNLINK] = { do_unlink,
"UNLINK" },
2717 [FUSE_RMDIR] = { do_rmdir,
"RMDIR" },
2718 [FUSE_RENAME] = { do_rename,
"RENAME" },
2719 [FUSE_LINK] = { do_link,
"LINK" },
2720 [FUSE_OPEN] = { do_open,
"OPEN" },
2721 [FUSE_READ] = { do_read,
"READ" },
2722 [FUSE_WRITE] = { do_write,
"WRITE" },
2723 [FUSE_STATFS] = { do_statfs,
"STATFS" },
2724 [FUSE_RELEASE] = { do_release,
"RELEASE" },
2725 [FUSE_FSYNC] = { do_fsync,
"FSYNC" },
2726 [FUSE_SETXATTR] = { do_setxattr,
"SETXATTR" },
2727 [FUSE_GETXATTR] = { do_getxattr,
"GETXATTR" },
2728 [FUSE_LISTXATTR] = { do_listxattr,
"LISTXATTR" },
2729 [FUSE_REMOVEXATTR] = { do_removexattr,
"REMOVEXATTR" },
2730 [FUSE_FLUSH] = { do_flush,
"FLUSH" },
2731 [FUSE_INIT] = { do_init,
"INIT" },
2732 [FUSE_OPENDIR] = { do_opendir,
"OPENDIR" },
2733 [FUSE_READDIR] = { do_readdir,
"READDIR" },
2734 [FUSE_RELEASEDIR] = { do_releasedir,
"RELEASEDIR" },
2735 [FUSE_FSYNCDIR] = { do_fsyncdir,
"FSYNCDIR" },
2736 [FUSE_GETLK] = { do_getlk,
"GETLK" },
2737 [FUSE_SETLK] = { do_setlk,
"SETLK" },
2738 [FUSE_SETLKW] = { do_setlkw,
"SETLKW" },
2739 [FUSE_ACCESS] = { do_access,
"ACCESS" },
2740 [FUSE_CREATE] = { do_create,
"CREATE" },
2741 [FUSE_TMPFILE] = { do_tmpfile,
"TMPFILE" },
2742 [FUSE_INTERRUPT] = { do_interrupt,
"INTERRUPT" },
2743 [FUSE_BMAP] = { do_bmap,
"BMAP" },
2744 [FUSE_IOCTL] = { do_ioctl,
"IOCTL" },
2745 [FUSE_POLL] = { do_poll,
"POLL" },
2746 [FUSE_FALLOCATE] = { do_fallocate,
"FALLOCATE" },
2747 [FUSE_DESTROY] = { do_destroy,
"DESTROY" },
2748 [FUSE_NOTIFY_REPLY] = { (
void *) 1,
"NOTIFY_REPLY" },
2749 [FUSE_BATCH_FORGET] = { do_batch_forget,
"BATCH_FORGET" },
2750 [FUSE_READDIRPLUS] = { do_readdirplus,
"READDIRPLUS"},
2751 [FUSE_RENAME2] = { do_rename2,
"RENAME2" },
2752 [FUSE_COPY_FILE_RANGE] = { do_copy_file_range,
"COPY_FILE_RANGE" },
2753 [FUSE_LSEEK] = { do_lseek,
"LSEEK" },
2754 [CUSE_INIT] = { cuse_lowlevel_init,
"CUSE_INIT" },
2762#define FUSE_MAXOP (CUSE_INIT + 1)
2764static const char *opname(
enum fuse_opcode opcode)
2766 if (opcode >= FUSE_MAXOP || !fuse_ll_ops[opcode].name)
2769 return fuse_ll_ops[opcode].name;
2772static int fuse_ll_copy_from_pipe(
struct fuse_bufvec *dst,
2777 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: %s\n", strerror(-res));
2781 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: short read\n");
2790 fuse_session_process_buf_internal(se, buf, NULL);
2794void fuse_session_process_buf_internal(
struct fuse_session *se,
2795 const struct fuse_buf *buf,
struct fuse_chan *ch)
2797 const size_t write_header_size =
sizeof(
struct fuse_in_header) +
2798 sizeof(struct fuse_write_in);
2800 struct fuse_bufvec tmpbuf = FUSE_BUFVEC_INIT(write_header_size);
2801 struct fuse_in_header *in;
2803 struct fuse_req *req;
2812 mbuf = malloc(tmpbuf.
buf[0].
size);
2814 fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate header\n");
2817 tmpbuf.
buf[0].
mem = mbuf;
2819 res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv);
2830 "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, pid: %u\n",
2831 (
unsigned long long) in->unique,
2832 opname((
enum fuse_opcode) in->opcode), in->opcode,
2833 (
unsigned long long) in->nodeid, buf->
size, in->pid);
2836 req = fuse_ll_alloc_req(se);
2838 struct fuse_out_header out = {
2839 .unique = in->unique,
2842 struct iovec iov = {
2844 .iov_len =
sizeof(
struct fuse_out_header),
2847 fuse_send_msg(se, ch, &iov, 1);
2851 req->unique = in->unique;
2852 req->ctx.uid = in->uid;
2853 req->ctx.gid = in->gid;
2854 req->ctx.pid = in->pid;
2855 req->ch = ch ? fuse_chan_get(ch) : NULL;
2858 if (!se->got_init) {
2859 enum fuse_opcode expected;
2861 expected = se->cuse_data ? CUSE_INIT : FUSE_INIT;
2862 if (in->opcode != expected)
2864 }
else if (in->opcode == FUSE_INIT || in->opcode == CUSE_INIT)
2869 if (se->deny_others && in->uid != se->owner && in->uid != 0 &&
2870 in->opcode != FUSE_INIT && in->opcode != FUSE_READ &&
2871 in->opcode != FUSE_WRITE && in->opcode != FUSE_FSYNC &&
2872 in->opcode != FUSE_RELEASE && in->opcode != FUSE_READDIR &&
2873 in->opcode != FUSE_FSYNCDIR && in->opcode != FUSE_RELEASEDIR &&
2874 in->opcode != FUSE_NOTIFY_REPLY &&
2875 in->opcode != FUSE_READDIRPLUS)
2879 if (in->opcode >= FUSE_MAXOP || !fuse_ll_ops[in->opcode].func)
2882 if (se->conn.no_interrupt && in->opcode == FUSE_INTERRUPT) {
2884 fuse_log(FUSE_LOG_DEBUG,
"FUSE_INTERRUPT: reply to kernel to disable interrupt\n");
2887 if (!se->conn.no_interrupt && in->opcode != FUSE_INTERRUPT) {
2888 struct fuse_req *intr;
2889 pthread_mutex_lock(&se->lock);
2890 intr = check_interrupt(se, req);
2891 list_add_req(req, &se->list);
2892 pthread_mutex_unlock(&se->lock);
2898 (in->opcode != FUSE_WRITE || !se->op.write_buf) &&
2899 in->opcode != FUSE_NOTIFY_REPLY) {
2903 newmbuf = realloc(mbuf, buf->
size);
2904 if (newmbuf == NULL)
2908 tmpbuf = FUSE_BUFVEC_INIT(buf->
size - write_header_size);
2909 tmpbuf.
buf[0].
mem = (
char *)mbuf + write_header_size;
2911 res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv);
2919 inarg = (
void *) &in[1];
2920 if (in->opcode == FUSE_WRITE && se->op.write_buf)
2921 do_write_buf(req, in->nodeid, inarg, buf);
2922 else if (in->opcode == FUSE_NOTIFY_REPLY)
2923 do_notify_reply(req, in->nodeid, inarg, buf);
2925 fuse_ll_ops[in->opcode].func(req, in->nodeid, inarg);
2935 fuse_ll_clear_pipe(se);
2939#define LL_OPTION(n,o,v) \
2940 { n, offsetof(struct fuse_session, o), v }
2942static const struct fuse_opt fuse_ll_opts[] = {
2943 LL_OPTION(
"debug", debug, 1),
2944 LL_OPTION(
"-d", debug, 1),
2945 LL_OPTION(
"--debug", debug, 1),
2946 LL_OPTION(
"allow_root", deny_others, 1),
2952 printf(
"using FUSE kernel interface version %i.%i\n",
2953 FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
2954 fuse_mount_version();
2962" -o allow_other allow access by all users\n"
2963" -o allow_root allow access by root\n"
2964" -o auto_unmount auto unmount on process termination\n");
2969 struct fuse_ll_pipe *llp;
2971 if (se->got_init && !se->got_destroy) {
2973 se->op.destroy(se->userdata);
2975 llp = pthread_getspecific(se->pipe_key);
2977 fuse_ll_pipe_free(llp);
2978 pthread_key_delete(se->pipe_key);
2979 pthread_mutex_destroy(&se->lock);
2980 free(se->cuse_data);
2985 destroy_mount_opts(se->mo);
2990static void fuse_ll_pipe_destructor(
void *data)
2992 struct fuse_ll_pipe *llp = data;
2993 fuse_ll_pipe_free(llp);
2996void fuse_buf_free(
struct fuse_buf *buf)
2998 if (buf->
mem == NULL)
3001 size_t write_header_sz =
3002 sizeof(
struct fuse_in_header) + sizeof(struct fuse_write_in);
3004 char *ptr = (
char *)buf->
mem - pagesize + write_header_sz;
3012static void *buf_alloc(
size_t size,
bool internal)
3020 size_t write_header_sz =
sizeof(
struct fuse_in_header) +
3021 sizeof(struct fuse_write_in);
3022 size_t new_size = ROUND_UP(size + write_header_sz, pagesize);
3024 char *buf = aligned_alloc(pagesize, new_size);
3028 buf += pagesize - write_header_sz;
3032 return malloc(size);
3039static int _fuse_session_receive_buf(
struct fuse_session *se,
3040 struct fuse_buf *buf,
struct fuse_chan *ch,
3045 size_t bufsize = se->bufsize;
3047 struct fuse_ll_pipe *llp;
3050 if (se->conn.proto_minor < 14 ||
3054 llp = fuse_ll_get_pipe(se);
3058 if (llp->size < bufsize) {
3059 if (llp->can_grow) {
3060 res = fcntl(llp->pipe[0], F_SETPIPE_SZ, bufsize);
3063 res = grow_pipe_to_max(llp->pipe[0]);
3070 if (llp->size < bufsize)
3074 if (se->io != NULL && se->io->splice_receive != NULL) {
3075 res = se->io->splice_receive(ch ? ch->fd : se->
fd, NULL,
3076 llp->pipe[1], NULL, bufsize, 0,
3079 res = splice(ch ? ch->fd : se->
fd, NULL, llp->pipe[1], NULL,
3088 if (err == ENODEV) {
3094 if (err != EINTR && err != EAGAIN)
3095 perror(
"fuse: splice from device");
3099 if (res <
sizeof(
struct fuse_in_header)) {
3100 fuse_log(FUSE_LOG_ERR,
"short splice from fuse device\n");
3115 if (res <
sizeof(
struct fuse_in_header) +
sizeof(
struct fuse_write_in) +
3121 buf->
mem = buf_alloc(se->bufsize, internal);
3125 "fuse: failed to allocate read buffer\n");
3130 se->buf_reallocable =
true;
3138 fuse_log(FUSE_LOG_ERR,
"fuse: copy from pipe: %s\n",
3140 fuse_ll_clear_pipe(se);
3143 if (res < tmpbuf.size) {
3145 "fuse: copy from pipe: short read\n");
3146 fuse_ll_clear_pipe(se);
3149 assert(res == tmpbuf.size);
3153 buf->
fd = tmpbuf.fd;
3163 buf->
mem = buf_alloc(se->bufsize, internal);
3166 "fuse: failed to allocate read buffer\n");
3171 se->buf_reallocable =
true;
3175 if (se->buf_reallocable)
3177 if (se->io != NULL) {
3180 res = se->io->read(ch ? ch->fd : se->fd,
buf->mem, bufsize,
3183 res = read(ch ? ch->fd : se->fd,
buf->mem, bufsize);
3190 if (err == EINVAL && se->buf_reallocable &&
3192 void *newbuf = buf_alloc(se->bufsize, internal);
3196 "fuse: failed to (re)allocate read buffer\n");
3202 se->buf_reallocable =
true;
3211 if (err == ENODEV) {
3220 if (err != EINTR && err != EAGAIN)
3221 perror(
"fuse: reading device");
3224 if ((
size_t)res <
sizeof(
struct fuse_in_header)) {
3225 fuse_log(FUSE_LOG_ERR,
"short read on fuse device\n");
3236 return _fuse_session_receive_buf(se,
buf, NULL,
false);
3240int fuse_session_receive_buf_internal(
struct fuse_session *se,
3242 struct fuse_chan *ch)
3244 return _fuse_session_receive_buf(se,
buf, ch,
true);
3247struct fuse_session *
3248fuse_session_new_versioned(
struct fuse_args *args,
3251struct fuse_session *
3252fuse_session_new_versioned(
struct fuse_args *args,
3257 struct fuse_session *se;
3258 struct mount_opts *mo;
3261 fuse_log(FUSE_LOG_ERR,
"fuse: warning: library too old, some operations may not work\n");
3265 if (args->
argc == 0) {
3266 fuse_log(FUSE_LOG_ERR,
"fuse: empty argv passed to fuse_session_new().\n");
3270 se = (
struct fuse_session *) calloc(1,
sizeof(
struct fuse_session));
3272 fuse_log(FUSE_LOG_ERR,
"fuse: failed to allocate fuse object\n");
3276 se->conn.max_write = FUSE_DEFAULT_MAX_PAGES_LIMIT * getpagesize();
3277 se->bufsize = se->conn.max_write + FUSE_BUFFER_HEADER_SIZE;
3278 se->conn.max_readahead = UINT_MAX;
3283 if(se->deny_others) {
3293 mo = parse_mount_opts(args);
3297 if(args->
argc == 1 &&
3298 args->
argv[0][0] ==
'-') {
3299 fuse_log(FUSE_LOG_ERR,
"fuse: warning: argv[0] looks like an option, but "
3300 "will be ignored\n");
3301 }
else if (args->
argc != 1) {
3303 fuse_log(FUSE_LOG_ERR,
"fuse: unknown option(s): `");
3304 for(i = 1; i < args->
argc-1; i++)
3311 fuse_log(FUSE_LOG_DEBUG,
"FUSE library version: %s\n", PACKAGE_VERSION);
3313 list_init_req(&se->list);
3314 list_init_req(&se->interrupts);
3315 list_init_nreq(&se->notify_list);
3317 pthread_mutex_init(&se->lock, NULL);
3319 err = pthread_key_create(&se->pipe_key, fuse_ll_pipe_destructor);
3321 fuse_log(FUSE_LOG_ERR,
"fuse: failed to create thread specific key: %s\n",
3326 memcpy(&se->op, op, op_size);
3327 se->owner = getuid();
3328 se->userdata = userdata;
3337 se->version = *version;
3342 pthread_mutex_destroy(&se->lock);
3347 destroy_mount_opts(mo);
3354struct fuse_session *fuse_session_new_30(
struct fuse_args *args,
3356 size_t op_size,
void *userdata);
3357struct fuse_session *fuse_session_new_30(
struct fuse_args *args,
3365 return fuse_session_new_versioned(args, op, op_size, &version,
3369FUSE_SYMVER(
"fuse_session_custom_io_317",
"fuse_session_custom_io@@FUSE_3.17")
3370int fuse_session_custom_io_317(struct fuse_session *se,
3371 const struct fuse_custom_io *io,
size_t op_size,
int fd)
3373 if (
sizeof(
struct fuse_custom_io) < op_size) {
3374 fuse_log(FUSE_LOG_ERR,
"fuse: warning: library too old, some operations may not work\n");
3375 op_size =
sizeof(
struct fuse_custom_io);
3379 fuse_log(FUSE_LOG_ERR,
"Invalid file descriptor value %d passed to "
3380 "fuse_session_custom_io()\n", fd);
3384 fuse_log(FUSE_LOG_ERR,
"No custom IO passed to "
3385 "fuse_session_custom_io()\n");
3387 }
else if (io->read == NULL || io->writev == NULL) {
3392 fuse_log(FUSE_LOG_ERR,
"io passed to fuse_session_custom_io() must "
3393 "implement both io->read() and io->writev\n");
3397 se->io = calloc(1,
sizeof(
struct fuse_custom_io));
3398 if (se->io == NULL) {
3399 fuse_log(FUSE_LOG_ERR,
"Failed to allocate memory for custom io. "
3400 "Error: %s\n", strerror(errno));
3405 memcpy(se->io, io, op_size);
3409int fuse_session_custom_io_30(
struct fuse_session *se,
3410 const struct fuse_custom_io *io,
int fd);
3411FUSE_SYMVER(
"fuse_session_custom_io_30",
"fuse_session_custom_io@FUSE_3.0")
3412int fuse_session_custom_io_30(struct fuse_session *se,
3413 const struct fuse_custom_io *io,
int fd)
3415 return fuse_session_custom_io_317(se, io,
3416 offsetof(
struct fuse_custom_io, clone_fd), fd);
3423 if (mountpoint == NULL) {
3424 fuse_log(FUSE_LOG_ERR,
"Invalid null-ptr mountpoint!\n");
3433 fd = open(
"/dev/null", O_RDWR);
3436 }
while (fd >= 0 && fd <= 2);
3444 fd = fuse_mnt_parse_fuse_fd(mountpoint);
3446 if (fcntl(fd, F_GETFD) == -1) {
3448 "fuse: Invalid file descriptor /dev/fd/%u\n",
3457 fd = fuse_kern_mount(mountpoint, se->mo);
3463 se->mountpoint = strdup(mountpoint);
3464 if (se->mountpoint == NULL)
3470 fuse_kern_unmount(mountpoint, fd);
3481 if (se->mountpoint != NULL) {
3482 fuse_kern_unmount(se->mountpoint, se->fd);
3484 free(se->mountpoint);
3485 se->mountpoint = NULL;
3493 size_t bufsize = 1024;
3497 unsigned long pid = req->ctx.pid;
3500 sprintf(path,
"/proc/%lu/task/%lu/status", pid, pid);
3503 buf = malloc(bufsize);
3508 fd = open(path, O_RDONLY);
3512 ret = read(fd, buf, bufsize);
3519 if ((
size_t)ret == bufsize) {
3527 s = strstr(buf,
"\nGroups:");
3535 unsigned long val = strtoul(s, &end, 0);
3555 (void) req; (void) size; (void) list;
3562__attribute__((no_sanitize_thread))
3568__attribute__((no_sanitize_thread))
3575__attribute__((no_sanitize_thread))
@ FUSE_CAP_NO_OPENDIR_SUPPORT
@ FUSE_CAP_PARALLEL_DIROPS
@ FUSE_CAP_NO_EXPORT_SUPPORT
@ FUSE_CAP_WRITEBACK_CACHE
@ FUSE_CAP_AUTO_INVAL_DATA
@ FUSE_CAP_HANDLE_KILLPRIV_V2
@ FUSE_CAP_HANDLE_KILLPRIV
@ FUSE_CAP_ATOMIC_O_TRUNC
@ FUSE_CAP_EXPORT_SUPPORT
@ FUSE_CAP_READDIRPLUS_AUTO
@ FUSE_CAP_NO_OPEN_SUPPORT
@ FUSE_CAP_DIRECT_IO_ALLOW_MMAP
@ FUSE_CAP_CACHE_SYMLINKS
@ FUSE_CAP_EXPLICIT_INVAL_DATA
size_t fuse_buf_size(const struct fuse_bufvec *bufv)
ssize_t fuse_buf_copy(struct fuse_bufvec *dst, struct fuse_bufvec *src, enum fuse_buf_copy_flags flags)
@ FUSE_BUF_SPLICE_NONBLOCK
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)
void * fuse_req_userdata(fuse_req_t req)
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_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_reply_none(fuse_req_t req)
int fuse_lowlevel_notify_expire_entry(struct fuse_session *se, fuse_ino_t parent, const char *name, size_t namelen)
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)
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_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_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)
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_passthrough_open(fuse_req_t req, int fd)
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)
void fuse_pollhandle_destroy(struct fuse_pollhandle *ph)
const struct fuse_ctx * fuse_req_ctx(fuse_req_t req)
struct fuse_req * fuse_req_t
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[])
void fuse_session_unmount(struct fuse_session *se)
int fuse_session_mount(struct fuse_session *se, const char *mountpoint)
void fuse_req_interrupt_func(fuse_req_t req, fuse_interrupt_func_t func, void *data)
enum fuse_buf_flags flags
uint32_t parallel_direct_writes