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         pthread_mutex_destroy(&req->lock);
 
  133         struct fuse_session *se = req->se;
 
  135         pthread_mutex_lock(&se->lock);
 
  136         req->u.ni.func = NULL;
 
  137         req->u.ni.data = NULL;
 
  140         fuse_chan_put(req->ch);
 
  142         pthread_mutex_unlock(&se->lock);
 
  147 static struct fuse_req *fuse_ll_alloc_req(
struct fuse_session *se)
 
  149         struct fuse_req *req;
 
  151         req = (
struct fuse_req *) calloc(1, 
sizeof(
struct fuse_req));
 
  153                 fuse_log(FUSE_LOG_ERR, 
"fuse: failed to allocate request\n");
 
  158                 pthread_mutex_init(&req->lock, NULL);
 
  165 static int fuse_send_msg(
struct fuse_session *se, 
struct fuse_chan *ch,
 
  166                          struct iovec *iov, 
int count)
 
  168         struct fuse_out_header *out = iov[0].iov_base;
 
  171         out->len = iov_length(iov, count);
 
  173                 if (out->unique == 0) {
 
  174                         fuse_log(FUSE_LOG_DEBUG, 
"NOTIFY: code=%d length=%u\n",
 
  175                                 out->error, out->len);
 
  176                 } 
else if (out->error) {
 
  178                                 "   unique: %llu, error: %i (%s), outsize: %i\n",
 
  179                                 (
unsigned long long) out->unique, out->error,
 
  180                                 strerror(-out->error), out->len);
 
  183                                 "   unique: %llu, success, outsize: %i\n",
 
  184                                 (
unsigned long long) out->unique, out->len);
 
  188         ssize_t res = writev(ch ? ch->fd : se->fd,
 
  195                         perror(
"fuse: writing device");
 
  203 int fuse_send_reply_iov_nofree(
fuse_req_t req, 
int error, 
struct iovec *iov,
 
  206         struct fuse_out_header out;
 
  208         if (error <= -1000 || error > 0) {
 
  209                 fuse_log(FUSE_LOG_ERR, 
"fuse: bad error value: %i\n",   error);
 
  213         out.unique = req->unique;
 
  216         iov[0].iov_base = &out;
 
  217         iov[0].iov_len = 
sizeof(
struct fuse_out_header);
 
  219         return fuse_send_msg(req->se, req->ch, iov, count);
 
  222 static int send_reply_iov(
fuse_req_t req, 
int error, 
struct iovec *iov,
 
  227         res = fuse_send_reply_iov_nofree(req, error, iov, count);
 
  232 static int send_reply(
fuse_req_t req, 
int error, 
const void *arg,
 
  238                 iov[1].iov_base = (
void *) arg;
 
  239                 iov[1].iov_len = argsize;
 
  242         return send_reply_iov(req, error, iov, count);
 
  248         struct iovec *padded_iov;
 
  250         padded_iov = malloc((count + 1) * 
sizeof(
struct iovec));
 
  251         if (padded_iov == NULL)
 
  254         memcpy(padded_iov + 1, iov, count * 
sizeof(
struct iovec));
 
  257         res = send_reply_iov(req, 0, padded_iov, count);
 
  267                          const char *name, 
const struct stat *stbuf, off_t off)
 
  272         size_t entlen_padded;
 
  273         struct fuse_dirent *dirent;
 
  275         namelen = strlen(name);
 
  276         entlen = FUSE_NAME_OFFSET + namelen;
 
  277         entlen_padded = FUSE_DIRENT_ALIGN(entlen);
 
  279         if ((buf == NULL) || (entlen_padded > bufsize))
 
  280           return entlen_padded;
 
  282         dirent = (
struct fuse_dirent*) buf;
 
  283         dirent->ino = stbuf->st_ino;
 
  285         dirent->namelen = namelen;
 
  286         dirent->type = (stbuf->st_mode & S_IFMT) >> 12;
 
  287         memcpy(dirent->name, name, namelen);
 
  288         memset(dirent->name + namelen, 0, entlen_padded - entlen);
 
  290         return entlen_padded;
 
  293 static void convert_statfs(
const struct statvfs *stbuf,
 
  294                            struct fuse_kstatfs *kstatfs)
 
  296         kstatfs->bsize   = stbuf->f_bsize;
 
  297         kstatfs->frsize  = stbuf->f_frsize;
 
  298         kstatfs->blocks  = stbuf->f_blocks;
 
  299         kstatfs->bfree   = stbuf->f_bfree;
 
  300         kstatfs->bavail  = stbuf->f_bavail;
 
  301         kstatfs->files   = stbuf->f_files;
 
  302         kstatfs->ffree   = stbuf->f_ffree;
 
  303         kstatfs->namelen = stbuf->f_namemax;
 
  306 static int send_reply_ok(
fuse_req_t req, 
const void *arg, 
size_t argsize)
 
  308         return send_reply(req, 0, arg, argsize);
 
  313         return send_reply(req, -err, NULL, 0);
 
  321 static unsigned long calc_timeout_sec(
double t)
 
  323         if (t > (
double) ULONG_MAX)
 
  328                 return (
unsigned long) t;
 
  331 static unsigned int calc_timeout_nsec(
double t)
 
  333         double f = t - (double) calc_timeout_sec(t);
 
  336         else if (f >= 0.999999999)
 
  339                 return (
unsigned int) (f * 1.0e9);
 
  342 static void fill_entry(
struct fuse_entry_out *arg,
 
  345         arg->nodeid = e->
ino;
 
  350         arg->attr_valid_nsec = calc_timeout_nsec(e->
attr_timeout);
 
  351         convert_stat(&e->
attr, &arg->attr);
 
  363         size_t entlen_padded;
 
  365         namelen = strlen(name);
 
  366         entlen = FUSE_NAME_OFFSET_DIRENTPLUS + namelen;
 
  367         entlen_padded = FUSE_DIRENT_ALIGN(entlen);
 
  368         if ((buf == NULL) || (entlen_padded > bufsize))
 
  369           return entlen_padded;
 
  371         struct fuse_direntplus *dp = (
struct fuse_direntplus *) buf;
 
  372         memset(&dp->entry_out, 0, 
sizeof(dp->entry_out));
 
  373         fill_entry(&dp->entry_out, e);
 
  375         struct fuse_dirent *dirent = &dp->dirent;
 
  376         dirent->ino = e->
attr.st_ino;
 
  378         dirent->namelen = namelen;
 
  379         dirent->type = (e->
attr.st_mode & S_IFMT) >> 12;
 
  380         memcpy(dirent->name, name, namelen);
 
  381         memset(dirent->name + namelen, 0, entlen_padded - entlen);
 
  383         return entlen_padded;
 
  386 static void fill_open(
struct fuse_open_out *arg,
 
  391                 arg->open_flags |= FOPEN_DIRECT_IO;
 
  393                 arg->open_flags |= FOPEN_KEEP_CACHE;
 
  395                 arg->open_flags |= FOPEN_CACHE_DIR;
 
  397                 arg->open_flags |= FOPEN_NONSEEKABLE;
 
  402         struct fuse_entry_out arg;
 
  403         size_t size = req->se->conn.proto_minor < 9 ?
 
  404                 FUSE_COMPAT_ENTRY_OUT_SIZE : 
sizeof(arg);
 
  408         if (!e->
ino && req->se->conn.proto_minor < 4)
 
  411         memset(&arg, 0, 
sizeof(arg));
 
  413         return send_reply_ok(req, &arg, size);
 
  419         char buf[
sizeof(
struct fuse_entry_out) + sizeof(struct fuse_open_out)];
 
  420         size_t entrysize = req->se->conn.proto_minor < 9 ?
 
  421                 FUSE_COMPAT_ENTRY_OUT_SIZE : 
sizeof(
struct fuse_entry_out);
 
  422         struct fuse_entry_out *earg = (
struct fuse_entry_out *) buf;
 
  423         struct fuse_open_out *oarg = (
struct fuse_open_out *) (buf + entrysize);
 
  425         memset(buf, 0, 
sizeof(buf));
 
  428         return send_reply_ok(req, buf,
 
  429                              entrysize + 
sizeof(
struct fuse_open_out));
 
  435         struct fuse_attr_out arg;
 
  436         size_t size = req->se->conn.proto_minor < 9 ?
 
  437                 FUSE_COMPAT_ATTR_OUT_SIZE : 
sizeof(arg);
 
  439         memset(&arg, 0, 
sizeof(arg));
 
  440         arg.attr_valid = calc_timeout_sec(attr_timeout);
 
  441         arg.attr_valid_nsec = calc_timeout_nsec(attr_timeout);
 
  442         convert_stat(attr, &arg.attr);
 
  444         return send_reply_ok(req, &arg, size);
 
  449         return send_reply_ok(req, linkname, strlen(linkname));
 
  454         struct fuse_open_out arg;
 
  456         memset(&arg, 0, 
sizeof(arg));
 
  458         return send_reply_ok(req, &arg, 
sizeof(arg));
 
  463         struct fuse_write_out arg;
 
  465         memset(&arg, 0, 
sizeof(arg));
 
  468         return send_reply_ok(req, &arg, 
sizeof(arg));
 
  473         return send_reply_ok(req, buf, size);
 
  476 static int fuse_send_data_iov_fallback(
struct fuse_session *se,
 
  477                                        struct fuse_chan *ch,
 
  478                                        struct iovec *iov, 
int iov_count,
 
  482         struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len);
 
  487         if (
buf->count == 1 && 
buf->idx == 0 && 
buf->off == 0 &&
 
  492                 iov[iov_count].iov_base = 
buf->buf[0].
mem;
 
  493                 iov[iov_count].iov_len = len;
 
  495                 return fuse_send_msg(se, ch, iov, iov_count);
 
  498         res = posix_memalign(&mbuf, pagesize, len);
 
  502         mem_buf.
buf[0].
mem = mbuf;
 
  510         iov[iov_count].iov_base = mbuf;
 
  511         iov[iov_count].iov_len = len;
 
  513         res = fuse_send_msg(se, ch, iov, iov_count);
 
  519 struct fuse_ll_pipe {
 
  525 static void fuse_ll_pipe_free(
struct fuse_ll_pipe *llp)
 
  533 #if !defined(HAVE_PIPE2) || !defined(O_CLOEXEC) 
  534 static int fuse_pipe(
int fds[2])
 
  541         if (fcntl(fds[0], F_SETFL, O_NONBLOCK) == -1 ||
 
  542             fcntl(fds[1], F_SETFL, O_NONBLOCK) == -1 ||
 
  543             fcntl(fds[0], F_SETFD, FD_CLOEXEC) == -1 ||
 
  544             fcntl(fds[1], F_SETFD, FD_CLOEXEC) == -1) {
 
  552 static int fuse_pipe(
int fds[2])
 
  554         return pipe2(fds, O_CLOEXEC | O_NONBLOCK);
 
  558 static struct fuse_ll_pipe *fuse_ll_get_pipe(
struct fuse_session *se)
 
  560         struct fuse_ll_pipe *llp = pthread_getspecific(se->pipe_key);
 
  564                 llp = malloc(
sizeof(
struct fuse_ll_pipe));
 
  568                 res = fuse_pipe(llp->pipe);
 
  577                 llp->size = pagesize * 16;
 
  580                 pthread_setspecific(se->pipe_key, llp);
 
  587 static void fuse_ll_clear_pipe(
struct fuse_session *se)
 
  589         struct fuse_ll_pipe *llp = pthread_getspecific(se->pipe_key);
 
  591                 pthread_setspecific(se->pipe_key, NULL);
 
  592                 fuse_ll_pipe_free(llp);
 
  596 #if defined(HAVE_SPLICE) && defined(HAVE_VMSPLICE) 
  597 static int read_back(
int fd, 
char *buf, 
size_t len)
 
  601         res = read(fd, buf, len);
 
  603                 fuse_log(FUSE_LOG_ERR, 
"fuse: internal error: failed to read back from pipe: %s\n", strerror(errno));
 
  607                 fuse_log(FUSE_LOG_ERR, 
"fuse: internal error: short read back from pipe: %i from %zi\n", res, len);
 
  613 static int grow_pipe_to_max(
int pipefd)
 
  620         maxfd = open(
"/proc/sys/fs/pipe-max-size", O_RDONLY);
 
  624         res = read(maxfd, buf, 
sizeof(buf) - 1);
 
  636         res = fcntl(pipefd, F_SETPIPE_SZ, max);
 
  642 static int fuse_send_data_iov(
struct fuse_session *se, 
struct fuse_chan *ch,
 
  643                                struct iovec *iov, 
int iov_count,
 
  648         struct fuse_out_header *out = iov[0].iov_base;
 
  649         struct fuse_ll_pipe *llp;
 
  652         size_t total_buf_size;
 
  655         struct fuse_bufvec pipe_buf = FUSE_BUFVEC_INIT(len);
 
  657         if (se->broken_splice_nonblock)
 
  667                         total_buf_size -= 
buf->off;
 
  669         if (total_buf_size < 2 * pagesize)
 
  672         if (se->conn.proto_minor < 14 ||
 
  676         llp = fuse_ll_get_pipe(se);
 
  681         headerlen = iov_length(iov, iov_count);
 
  683         out->len = headerlen + len;
 
  689         pipesize = pagesize * (iov_count + 
buf->count + 1) + out->len;
 
  691         if (llp->size < pipesize) {
 
  693                         res = fcntl(llp->pipe[0], F_SETPIPE_SZ, pipesize);
 
  695                                 res = grow_pipe_to_max(llp->pipe[0]);
 
  703                 if (llp->size < pipesize)
 
  708         res = vmsplice(llp->pipe[1], iov, iov_count, SPLICE_F_NONBLOCK);
 
  712         if (res != headerlen) {
 
  714                 fuse_log(FUSE_LOG_ERR, 
"fuse: short vmsplice to pipe: %u/%zu\n", res,
 
  720         pipe_buf.
buf[0].
fd = llp->pipe[1];
 
  725                 if (res == -EAGAIN || res == -EINVAL) {
 
  737                                 se->broken_splice_nonblock = 1;
 
  739                         pthread_setspecific(se->pipe_key, NULL);
 
  740                         fuse_ll_pipe_free(llp);
 
  747         if (res != 0 && res < len) {
 
  748                 struct fuse_bufvec mem_buf = FUSE_BUFVEC_INIT(len);
 
  750                 size_t now_len = res;
 
  760                 res = posix_memalign(&mbuf, pagesize, len);
 
  764                 mem_buf.
buf[0].
mem = mbuf;
 
  765                 mem_buf.
off = now_len;
 
  769                         size_t extra_len = res;
 
  775                         tmpbuf = malloc(headerlen);
 
  776                         if (tmpbuf == NULL) {
 
  781                         res = read_back(llp->pipe[0], tmpbuf, headerlen);
 
  787                         res = read_back(llp->pipe[0], mbuf, now_len);
 
  792                         len = now_len + extra_len;
 
  793                         iov[iov_count].iov_base = mbuf;
 
  794                         iov[iov_count].iov_len = len;
 
  796                         res = fuse_send_msg(se, ch, iov, iov_count);
 
  804         out->len = headerlen + len;
 
  808                         "   unique: %llu, success, outsize: %i (splice)\n",
 
  809                         (
unsigned long long) out->unique, out->len);
 
  815                 splice_flags |= SPLICE_F_MOVE;
 
  817         res = splice(llp->pipe[0], NULL, ch ? ch->fd : se->fd,
 
  818                      NULL, out->len, splice_flags);
 
  821                 perror(
"fuse: splice from pipe");
 
  824         if (res != out->len) {
 
  826                 fuse_log(FUSE_LOG_ERR, 
"fuse: short splice from pipe: %u/%u\n",
 
  833         fuse_ll_clear_pipe(se);
 
  837         return fuse_send_data_iov_fallback(se, ch, iov, iov_count, 
buf, len);
 
  840 static int fuse_send_data_iov(
struct fuse_session *se, 
struct fuse_chan *ch,
 
  841                                struct iovec *iov, 
int iov_count,
 
  847         return fuse_send_data_iov_fallback(se, ch, iov, iov_count, 
buf, len);
 
  855         struct fuse_out_header out;
 
  858         iov[0].iov_base = &out;
 
  859         iov[0].iov_len = 
sizeof(
struct fuse_out_header);
 
  861         out.unique = req->unique;
 
  864         res = fuse_send_data_iov(req->se, req->ch, iov, 1, bufv, flags);
 
  875         struct fuse_statfs_out arg;
 
  876         size_t size = req->se->conn.proto_minor < 4 ?
 
  877                 FUSE_COMPAT_STATFS_SIZE : 
sizeof(arg);
 
  879         memset(&arg, 0, 
sizeof(arg));
 
  880         convert_statfs(stbuf, &arg.st);
 
  882         return send_reply_ok(req, &arg, size);
 
  887         struct fuse_getxattr_out arg;
 
  889         memset(&arg, 0, 
sizeof(arg));
 
  892         return send_reply_ok(req, &arg, 
sizeof(arg));
 
  897         struct fuse_lk_out arg;
 
  899         memset(&arg, 0, 
sizeof(arg));
 
  900         arg.lk.type = lock->l_type;
 
  901         if (lock->l_type != F_UNLCK) {
 
  902                 arg.lk.start = lock->l_start;
 
  903                 if (lock->l_len == 0)
 
  904                         arg.lk.end = OFFSET_MAX;
 
  906                         arg.lk.end = lock->l_start + lock->l_len - 1;
 
  908         arg.lk.pid = lock->l_pid;
 
  909         return send_reply_ok(req, &arg, 
sizeof(arg));
 
  914         struct fuse_bmap_out arg;
 
  916         memset(&arg, 0, 
sizeof(arg));
 
  919         return send_reply_ok(req, &arg, 
sizeof(arg));
 
  922 static struct fuse_ioctl_iovec *fuse_ioctl_iovec_copy(
const struct iovec *iov,
 
  925         struct fuse_ioctl_iovec *fiov;
 
  928         fiov = malloc(
sizeof(fiov[0]) * count);
 
  932         for (i = 0; i < count; i++) {
 
  933                 fiov[i].base = (uintptr_t) iov[i].iov_base;
 
  934                 fiov[i].len = iov[i].iov_len;
 
  941                            const struct iovec *in_iov, 
size_t in_count,
 
  942                            const struct iovec *out_iov, 
size_t out_count)
 
  944         struct fuse_ioctl_out arg;
 
  945         struct fuse_ioctl_iovec *in_fiov = NULL;
 
  946         struct fuse_ioctl_iovec *out_fiov = NULL;
 
  951         memset(&arg, 0, 
sizeof(arg));
 
  952         arg.flags |= FUSE_IOCTL_RETRY;
 
  953         arg.in_iovs = in_count;
 
  954         arg.out_iovs = out_count;
 
  955         iov[count].iov_base = &arg;
 
  956         iov[count].iov_len = 
sizeof(arg);
 
  959         if (req->se->conn.proto_minor < 16) {
 
  961                         iov[count].iov_base = (
void *)in_iov;
 
  962                         iov[count].iov_len = 
sizeof(in_iov[0]) * in_count;
 
  967                         iov[count].iov_base = (
void *)out_iov;
 
  968                         iov[count].iov_len = 
sizeof(out_iov[0]) * out_count;
 
  973                 if (
sizeof(
void *) == 4 && req->ioctl_64bit) {
 
  979                         in_fiov = fuse_ioctl_iovec_copy(in_iov, in_count);
 
  983                         iov[count].iov_base = (
void *)in_fiov;
 
  984                         iov[count].iov_len = 
sizeof(in_fiov[0]) * in_count;
 
  988                         out_fiov = fuse_ioctl_iovec_copy(out_iov, out_count);
 
  992                         iov[count].iov_base = (
void *)out_fiov;
 
  993                         iov[count].iov_len = 
sizeof(out_fiov[0]) * out_count;
 
  998         res = send_reply_iov(req, 0, iov, count);
 
 1012         struct fuse_ioctl_out arg;
 
 1013         struct iovec iov[3];
 
 1016         memset(&arg, 0, 
sizeof(arg));
 
 1017         arg.result = result;
 
 1018         iov[count].iov_base = &arg;
 
 1019         iov[count].iov_len = 
sizeof(arg);
 
 1023                 iov[count].iov_base = (
char *) buf;
 
 1024                 iov[count].iov_len = size;
 
 1028         return send_reply_iov(req, 0, iov, count);
 
 1034         struct iovec *padded_iov;
 
 1035         struct fuse_ioctl_out arg;
 
 1038         padded_iov = malloc((count + 2) * 
sizeof(
struct iovec));
 
 1039         if (padded_iov == NULL)
 
 1042         memset(&arg, 0, 
sizeof(arg));
 
 1043         arg.result = result;
 
 1044         padded_iov[1].iov_base = &arg;
 
 1045         padded_iov[1].iov_len = 
sizeof(arg);
 
 1047         memcpy(&padded_iov[2], iov, count * 
sizeof(
struct iovec));
 
 1049         res = send_reply_iov(req, 0, padded_iov, count + 2);
 
 1057         struct fuse_poll_out arg;
 
 1059         memset(&arg, 0, 
sizeof(arg));
 
 1060         arg.revents = revents;
 
 1062         return send_reply_ok(req, &arg, 
sizeof(arg));
 
 1067         struct fuse_lseek_out arg;
 
 1069         memset(&arg, 0, 
sizeof(arg));
 
 1072         return send_reply_ok(req, &arg, 
sizeof(arg));
 
 1077         char *name = (
char *) inarg;
 
 1079         if (req->se->op.lookup)
 
 1080                 req->se->op.lookup(req, nodeid, name);
 
 1087         struct fuse_forget_in *arg = (
struct fuse_forget_in *) inarg;
 
 1089         if (req->se->op.forget)
 
 1090                 req->se->op.forget(req, nodeid, arg->nlookup);
 
 1098         struct fuse_batch_forget_in *arg = (
void *) inarg;
 
 1099         struct fuse_forget_one *param = (
void *) PARAM(arg);
 
 1104         if (req->se->op.forget_multi) {
 
 1105                 req->se->op.forget_multi(req, arg->count,
 
 1106                                      (
struct fuse_forget_data *) param);
 
 1107         } 
else if (req->se->op.forget) {
 
 1108                 for (i = 0; i < arg->count; i++) {
 
 1109                         struct fuse_forget_one *forget = ¶m[i];
 
 1110                         struct fuse_req *dummy_req;
 
 1112                         dummy_req = fuse_ll_alloc_req(req->se);
 
 1113                         if (dummy_req == NULL)
 
 1116                         dummy_req->unique = req->unique;
 
 1117                         dummy_req->ctx = req->ctx;
 
 1118                         dummy_req->ch = NULL;
 
 1120                         req->se->op.forget(dummy_req, forget->nodeid,
 
 1134         if (req->se->conn.proto_minor >= 9) {
 
 1135                 struct fuse_getattr_in *arg = (
struct fuse_getattr_in *) inarg;
 
 1137                 if (arg->getattr_flags & FUSE_GETATTR_FH) {
 
 1138                         memset(&fi, 0, 
sizeof(fi));
 
 1144         if (req->se->op.getattr)
 
 1145                 req->se->op.getattr(req, nodeid, fip);
 
 1152         struct fuse_setattr_in *arg = (
struct fuse_setattr_in *) inarg;
 
 1154         if (req->se->op.setattr) {
 
 1158                 memset(&stbuf, 0, 
sizeof(stbuf));
 
 1159                 convert_attr(arg, &stbuf);
 
 1160                 if (arg->valid & FATTR_FH) {
 
 1161                         arg->valid &= ~FATTR_FH;
 
 1162                         memset(&fi_store, 0, 
sizeof(fi_store));
 
 1167                         FUSE_SET_ATTR_MODE      |
 
 1170                         FUSE_SET_ATTR_SIZE      |
 
 1171                         FUSE_SET_ATTR_ATIME     |
 
 1172                         FUSE_SET_ATTR_MTIME     |
 
 1173                         FUSE_SET_ATTR_ATIME_NOW |
 
 1174                         FUSE_SET_ATTR_MTIME_NOW |
 
 1175                         FUSE_SET_ATTR_CTIME;
 
 1177                 req->se->op.setattr(req, nodeid, &stbuf, arg->valid, fi);
 
 1184         struct fuse_access_in *arg = (
struct fuse_access_in *) inarg;
 
 1186         if (req->se->op.access)
 
 1187                 req->se->op.access(req, nodeid, arg->mask);
 
 1196         if (req->se->op.readlink)
 
 1197                 req->se->op.readlink(req, nodeid);
 
 1204         struct fuse_mknod_in *arg = (
struct fuse_mknod_in *) inarg;
 
 1205         char *name = PARAM(arg);
 
 1207         if (req->se->conn.proto_minor >= 12)
 
 1208                 req->ctx.umask = arg->umask;
 
 1210                 name = (
char *) inarg + FUSE_COMPAT_MKNOD_IN_SIZE;
 
 1212         if (req->se->op.mknod)
 
 1213                 req->se->op.mknod(req, nodeid, name, arg->mode, arg->rdev);
 
 1220         struct fuse_mkdir_in *arg = (
struct fuse_mkdir_in *) inarg;
 
 1222         if (req->se->conn.proto_minor >= 12)
 
 1223                 req->ctx.umask = arg->umask;
 
 1225         if (req->se->op.mkdir)
 
 1226                 req->se->op.mkdir(req, nodeid, PARAM(arg), arg->mode);
 
 1233         char *name = (
char *) inarg;
 
 1235         if (req->se->op.unlink)
 
 1236                 req->se->op.unlink(req, nodeid, name);
 
 1243         char *name = (
char *) inarg;
 
 1245         if (req->se->op.rmdir)
 
 1246                 req->se->op.rmdir(req, nodeid, name);
 
 1253         char *name = (
char *) inarg;
 
 1254         char *linkname = ((
char *) inarg) + strlen((
char *) inarg) + 1;
 
 1256         if (req->se->op.symlink)
 
 1257                 req->se->op.symlink(req, linkname, nodeid, name);
 
 1264         struct fuse_rename_in *arg = (
struct fuse_rename_in *) inarg;
 
 1265         char *oldname = PARAM(arg);
 
 1266         char *newname = oldname + strlen(oldname) + 1;
 
 1268         if (req->se->op.rename)
 
 1269                 req->se->op.rename(req, nodeid, oldname, arg->newdir, newname,
 
 1277         struct fuse_rename2_in *arg = (
struct fuse_rename2_in *) inarg;
 
 1278         char *oldname = PARAM(arg);
 
 1279         char *newname = oldname + strlen(oldname) + 1;
 
 1281         if (req->se->op.rename)
 
 1282                 req->se->op.rename(req, nodeid, oldname, arg->newdir, newname,
 
 1290         struct fuse_link_in *arg = (
struct fuse_link_in *) inarg;
 
 1292         if (req->se->op.link)
 
 1293                 req->se->op.link(req, arg->oldnodeid, nodeid, PARAM(arg));
 
 1300         struct fuse_create_in *arg = (
struct fuse_create_in *) inarg;
 
 1302         if (req->se->op.create) {
 
 1304                 char *name = PARAM(arg);
 
 1306                 memset(&fi, 0, 
sizeof(fi));
 
 1307                 fi.
flags = arg->flags;
 
 1309                 if (req->se->conn.proto_minor >= 12)
 
 1310                         req->ctx.umask = arg->umask;
 
 1312                         name = (
char *) inarg + 
sizeof(
struct fuse_open_in);
 
 1314                 req->se->op.create(req, nodeid, name, arg->mode, &fi);
 
 1321         struct fuse_open_in *arg = (
struct fuse_open_in *) inarg;
 
 1324         memset(&fi, 0, 
sizeof(fi));
 
 1325         fi.
flags = arg->flags;
 
 1327         if (req->se->op.open)
 
 1328                 req->se->op.open(req, nodeid, &fi);
 
 1335         struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
 
 1337         if (req->se->op.read) {
 
 1340                 memset(&fi, 0, 
sizeof(fi));
 
 1342                 if (req->se->conn.proto_minor >= 9) {
 
 1344                         fi.
flags = arg->flags;
 
 1346                 req->se->op.read(req, nodeid, arg->size, arg->offset, &fi);
 
 1353         struct fuse_write_in *arg = (
struct fuse_write_in *) inarg;
 
 1357         memset(&fi, 0, 
sizeof(fi));
 
 1359         fi.
writepage = (arg->write_flags & FUSE_WRITE_CACHE) != 0;
 
 1361         if (req->se->conn.proto_minor < 9) {
 
 1362                 param = ((
char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE;
 
 1365                 fi.
flags = arg->flags;
 
 1369         if (req->se->op.write)
 
 1370                 req->se->op.write(req, nodeid, param, arg->size,
 
 1379         struct fuse_session *se = req->se;
 
 1384         struct fuse_write_in *arg = (
struct fuse_write_in *) inarg;
 
 1387         memset(&fi, 0, 
sizeof(fi));
 
 1389         fi.
writepage = arg->write_flags & FUSE_WRITE_CACHE;
 
 1391         if (se->conn.proto_minor < 9) {
 
 1392                 bufv.
buf[0].
mem = ((
char *) arg) + FUSE_COMPAT_WRITE_IN_SIZE;
 
 1393                 bufv.
buf[0].
size -= 
sizeof(
struct fuse_in_header) +
 
 1394                         FUSE_COMPAT_WRITE_IN_SIZE;
 
 1398                 fi.
flags = arg->flags;
 
 1400                         bufv.
buf[0].
mem = PARAM(arg);
 
 1402                 bufv.
buf[0].
size -= 
sizeof(
struct fuse_in_header) +
 
 1403                         sizeof(struct fuse_write_in);
 
 1405         if (bufv.
buf[0].
size < arg->size) {
 
 1406                 fuse_log(FUSE_LOG_ERR, 
"fuse: do_write_buf: buffer size too small\n");
 
 1412         se->op.write_buf(req, nodeid, &bufv, arg->offset, &fi);
 
 1417                 fuse_ll_clear_pipe(se);
 
 1422         struct fuse_flush_in *arg = (
struct fuse_flush_in *) inarg;
 
 1425         memset(&fi, 0, 
sizeof(fi));
 
 1428         if (req->se->conn.proto_minor >= 7)
 
 1431         if (req->se->op.flush)
 
 1432                 req->se->op.flush(req, nodeid, &fi);
 
 1439         struct fuse_release_in *arg = (
struct fuse_release_in *) inarg;
 
 1442         memset(&fi, 0, 
sizeof(fi));
 
 1443         fi.
flags = arg->flags;
 
 1445         if (req->se->conn.proto_minor >= 8) {
 
 1446                 fi.
flush = (arg->release_flags & FUSE_RELEASE_FLUSH) ? 1 : 0;
 
 1449         if (arg->release_flags & FUSE_RELEASE_FLOCK_UNLOCK) {
 
 1450                 fi.flock_release = 1;
 
 1454         if (req->se->op.release)
 
 1455                 req->se->op.release(req, nodeid, &fi);
 
 1462         struct fuse_fsync_in *arg = (
struct fuse_fsync_in *) inarg;
 
 1464         int datasync = arg->fsync_flags & 1;
 
 1466         memset(&fi, 0, 
sizeof(fi));
 
 1469         if (req->se->op.fsync)
 
 1470                 req->se->op.fsync(req, nodeid, datasync, &fi);
 
 1477         struct fuse_open_in *arg = (
struct fuse_open_in *) inarg;
 
 1480         memset(&fi, 0, 
sizeof(fi));
 
 1481         fi.
flags = arg->flags;
 
 1483         if (req->se->op.opendir)
 
 1484                 req->se->op.opendir(req, nodeid, &fi);
 
 1491         struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
 
 1494         memset(&fi, 0, 
sizeof(fi));
 
 1497         if (req->se->op.readdir)
 
 1498                 req->se->op.readdir(req, nodeid, arg->size, arg->offset, &fi);
 
 1505         struct fuse_read_in *arg = (
struct fuse_read_in *) inarg;
 
 1508         memset(&fi, 0, 
sizeof(fi));
 
 1511         if (req->se->op.readdirplus)
 
 1512                 req->se->op.readdirplus(req, nodeid, arg->size, arg->offset, &fi);
 
 1519         struct fuse_release_in *arg = (
struct fuse_release_in *) inarg;
 
 1522         memset(&fi, 0, 
sizeof(fi));
 
 1523         fi.
flags = arg->flags;
 
 1526         if (req->se->op.releasedir)
 
 1527                 req->se->op.releasedir(req, nodeid, &fi);
 
 1534         struct fuse_fsync_in *arg = (
struct fuse_fsync_in *) inarg;
 
 1536         int datasync = arg->fsync_flags & 1;
 
 1538         memset(&fi, 0, 
sizeof(fi));
 
 1541         if (req->se->op.fsyncdir)
 
 1542                 req->se->op.fsyncdir(req, nodeid, datasync, &fi);
 
 1552         if (req->se->op.statfs)
 
 1553                 req->se->op.statfs(req, nodeid);
 
 1555                 struct statvfs buf = {
 
 1565         struct fuse_setxattr_in *arg = (
struct fuse_setxattr_in *) inarg;
 
 1566         char *name = PARAM(arg);
 
 1567         char *value = name + strlen(name) + 1;
 
 1569         if (req->se->op.setxattr)
 
 1570                 req->se->op.setxattr(req, nodeid, name, value, arg->size,
 
 1578         struct fuse_getxattr_in *arg = (
struct fuse_getxattr_in *) inarg;
 
 1580         if (req->se->op.getxattr)
 
 1581                 req->se->op.getxattr(req, nodeid, PARAM(arg), arg->size);
 
 1588         struct fuse_getxattr_in *arg = (
struct fuse_getxattr_in *) inarg;
 
 1590         if (req->se->op.listxattr)
 
 1591                 req->se->op.listxattr(req, nodeid, arg->size);
 
 1598         char *name = (
char *) inarg;
 
 1600         if (req->se->op.removexattr)
 
 1601                 req->se->op.removexattr(req, nodeid, name);
 
 1606 static void convert_fuse_file_lock(
struct fuse_file_lock *fl,
 
 1607                                    struct flock *flock)
 
 1609         memset(flock, 0, 
sizeof(
struct flock));
 
 1610         flock->l_type = fl->type;
 
 1611         flock->l_whence = SEEK_SET;
 
 1612         flock->l_start = fl->start;
 
 1613         if (fl->end == OFFSET_MAX)
 
 1616                 flock->l_len = fl->end - fl->start + 1;
 
 1617         flock->l_pid = fl->pid;
 
 1622         struct fuse_lk_in *arg = (
struct fuse_lk_in *) inarg;
 
 1626         memset(&fi, 0, 
sizeof(fi));
 
 1630         convert_fuse_file_lock(&arg->lk, &flock);
 
 1631         if (req->se->op.getlk)
 
 1632                 req->se->op.getlk(req, nodeid, &fi, &flock);
 
 1638                             const void *inarg, 
int sleep)
 
 1640         struct fuse_lk_in *arg = (
struct fuse_lk_in *) inarg;
 
 1644         memset(&fi, 0, 
sizeof(fi));
 
 1648         if (arg->lk_flags & FUSE_LK_FLOCK) {
 
 1651                 switch (arg->lk.type) {
 
 1665                 if (req->se->op.flock)
 
 1666                         req->se->op.flock(req, nodeid, &fi, op);
 
 1670                 convert_fuse_file_lock(&arg->lk, &flock);
 
 1671                 if (req->se->op.setlk)
 
 1672                         req->se->op.setlk(req, nodeid, &fi, &flock, sleep);
 
 1680         do_setlk_common(req, nodeid, inarg, 0);
 
 1685         do_setlk_common(req, nodeid, inarg, 1);
 
 1688 static int find_interrupted(
struct fuse_session *se, 
struct fuse_req *req)
 
 1690         struct fuse_req *curr;
 
 1692         for (curr = se->list.next; curr != &se->list; curr = curr->next) {
 
 1693                 if (curr->unique == req->u.i.unique) {
 
 1698                         pthread_mutex_unlock(&se->lock);
 
 1701                         pthread_mutex_lock(&curr->lock);
 
 1702                         pthread_mutex_lock(&se->lock);
 
 1703                         curr->interrupted = 1;
 
 1704                         func = curr->u.ni.func;
 
 1705                         data = curr->u.ni.data;
 
 1706                         pthread_mutex_unlock(&se->lock);
 
 1709                         pthread_mutex_unlock(&curr->lock);
 
 1711                         pthread_mutex_lock(&se->lock);
 
 1719         for (curr = se->interrupts.next; curr != &se->interrupts;
 
 1720              curr = curr->next) {
 
 1721                 if (curr->u.i.unique == req->u.i.unique)
 
 1729         struct fuse_interrupt_in *arg = (
struct fuse_interrupt_in *) inarg;
 
 1730         struct fuse_session *se = req->se;
 
 1734                 fuse_log(FUSE_LOG_DEBUG, 
"INTERRUPT: %llu\n",
 
 1735                         (
unsigned long long) arg->unique);
 
 1737         req->u.i.unique = arg->unique;
 
 1739         pthread_mutex_lock(&se->lock);
 
 1740         if (find_interrupted(se, req))
 
 1743                 list_add_req(req, &se->interrupts);
 
 1744         pthread_mutex_unlock(&se->lock);
 
 1747 static struct fuse_req *check_interrupt(
struct fuse_session *se,
 
 1748                                         struct fuse_req *req)
 
 1750         struct fuse_req *curr;
 
 1752         for (curr = se->interrupts.next; curr != &se->interrupts;
 
 1753              curr = curr->next) {
 
 1754                 if (curr->u.i.unique == req->unique) {
 
 1755                         req->interrupted = 1;
 
 1761         curr = se->interrupts.next;
 
 1762         if (curr != &se->interrupts) {
 
 1764                 list_init_req(curr);
 
 1772         struct fuse_bmap_in *arg = (
struct fuse_bmap_in *) inarg;
 
 1774         if (req->se->op.bmap)
 
 1775                 req->se->op.bmap(req, nodeid, arg->blocksize, arg->block);
 
 1782         struct fuse_ioctl_in *arg = (
struct fuse_ioctl_in *) inarg;
 
 1783         unsigned int flags = arg->flags;
 
 1784         void *in_buf = arg->in_size ? PARAM(arg) : NULL;
 
 1787         if (
flags & FUSE_IOCTL_DIR &&
 
 1793         memset(&fi, 0, 
sizeof(fi));
 
 1796         if (
sizeof(
void *) == 4 && req->se->conn.proto_minor >= 16 &&
 
 1797             !(
flags & FUSE_IOCTL_32BIT)) {
 
 1798                 req->ioctl_64bit = 1;
 
 1801         if (req->se->op.ioctl)
 
 1802                 req->se->op.ioctl(req, nodeid, arg->cmd,
 
 1803                                  (
void *)(uintptr_t)arg->arg, &fi, 
flags,
 
 1804                                  in_buf, arg->in_size, arg->out_size);
 
 1816         struct fuse_poll_in *arg = (
struct fuse_poll_in *) inarg;
 
 1819         memset(&fi, 0, 
sizeof(fi));
 
 1823         if (req->se->op.poll) {
 
 1824                 struct fuse_pollhandle *ph = NULL;
 
 1826                 if (arg->flags & FUSE_POLL_SCHEDULE_NOTIFY) {
 
 1827                         ph = malloc(
sizeof(
struct fuse_pollhandle));
 
 1836                 req->se->op.poll(req, nodeid, &fi, ph);
 
 1844         struct fuse_fallocate_in *arg = (
struct fuse_fallocate_in *) inarg;
 
 1847         memset(&fi, 0, 
sizeof(fi));
 
 1850         if (req->se->op.fallocate)
 
 1851                 req->se->op.fallocate(req, nodeid, arg->mode, arg->offset, arg->length, &fi);
 
 1858         struct fuse_copy_file_range_in *arg = (
struct fuse_copy_file_range_in *) inarg;
 
 1861         memset(&fi_in, 0, 
sizeof(fi_in));
 
 1862         fi_in.fh = arg->fh_in;
 
 1864         memset(&fi_out, 0, 
sizeof(fi_out));
 
 1865         fi_out.fh = arg->fh_out;
 
 1868         if (req->se->op.copy_file_range)
 
 1869                 req->se->op.copy_file_range(req, nodeid_in, arg->off_in,
 
 1870                                             &fi_in, arg->nodeid_out,
 
 1871                                             arg->off_out, &fi_out, arg->len,
 
 1879         struct fuse_lseek_in *arg = (
struct fuse_lseek_in *) inarg;
 
 1882         memset(&fi, 0, 
sizeof(fi));
 
 1885         if (req->se->op.lseek)
 
 1886                 req->se->op.lseek(req, nodeid, arg->offset, arg->whence, &fi);
 
 1893 static __attribute__((no_sanitize(
"thread")))
 
 1896         struct fuse_init_in *arg = (
struct fuse_init_in *) inarg;
 
 1897         struct fuse_init_out outarg;
 
 1898         struct fuse_session *se = req->se;
 
 1899         size_t bufsize = se->bufsize;
 
 1900         size_t outargsize = 
sizeof(outarg);
 
 1904                 fuse_log(FUSE_LOG_DEBUG, 
"INIT: %u.%u\n", arg->major, arg->minor);
 
 1905                 if (arg->major == 7 && arg->minor >= 6) {
 
 1906                         fuse_log(FUSE_LOG_DEBUG, 
"flags=0x%08x\n", arg->flags);
 
 1907                         fuse_log(FUSE_LOG_DEBUG, 
"max_readahead=0x%08x\n",
 
 1908                                 arg->max_readahead);
 
 1911         se->conn.proto_major = arg->major;
 
 1912         se->conn.proto_minor = arg->minor;
 
 1913         se->conn.capable = 0;
 
 1916         memset(&outarg, 0, 
sizeof(outarg));
 
 1917         outarg.major = FUSE_KERNEL_VERSION;
 
 1918         outarg.minor = FUSE_KERNEL_MINOR_VERSION;
 
 1920         if (arg->major < 7) {
 
 1921                 fuse_log(FUSE_LOG_ERR, 
"fuse: unsupported protocol version: %u.%u\n",
 
 1922                         arg->major, arg->minor);
 
 1927         if (arg->major > 7) {
 
 1929                 send_reply_ok(req, &outarg, 
sizeof(outarg));
 
 1933         if (arg->minor >= 6) {
 
 1934                 if (arg->max_readahead < se->conn.max_readahead)
 
 1935                         se->conn.max_readahead = arg->max_readahead;
 
 1936                 if (arg->flags & FUSE_ASYNC_READ)
 
 1938                 if (arg->flags & FUSE_POSIX_LOCKS)
 
 1940                 if (arg->flags & FUSE_ATOMIC_O_TRUNC)
 
 1942                 if (arg->flags & FUSE_EXPORT_SUPPORT)
 
 1944                 if (arg->flags & FUSE_DONT_MASK)
 
 1946                 if (arg->flags & FUSE_FLOCK_LOCKS)
 
 1948                 if (arg->flags & FUSE_AUTO_INVAL_DATA)
 
 1950                 if (arg->flags & FUSE_DO_READDIRPLUS)
 
 1952                 if (arg->flags & FUSE_READDIRPLUS_AUTO)
 
 1954                 if (arg->flags & FUSE_ASYNC_DIO)
 
 1956                 if (arg->flags & FUSE_WRITEBACK_CACHE)
 
 1958                 if (arg->flags & FUSE_NO_OPEN_SUPPORT)
 
 1960                 if (arg->flags & FUSE_PARALLEL_DIROPS)
 
 1962                 if (arg->flags & FUSE_POSIX_ACL)
 
 1964                 if (arg->flags & FUSE_HANDLE_KILLPRIV)
 
 1966                 if (arg->flags & FUSE_CACHE_SYMLINKS)
 
 1968                 if (arg->flags & FUSE_NO_OPENDIR_SUPPORT)
 
 1970                 if (arg->flags & FUSE_EXPLICIT_INVAL_DATA)
 
 1972                 if (!(arg->flags & FUSE_MAX_PAGES)) {
 
 1973                         size_t max_bufsize =
 
 1974                                 FUSE_DEFAULT_MAX_PAGES_PER_REQ * getpagesize()
 
 1975                                 + FUSE_BUFFER_HEADER_SIZE;
 
 1976                         if (bufsize > max_bufsize) {
 
 1977                                 bufsize = max_bufsize;
 
 1981                 se->conn.max_readahead = 0;
 
 1984         if (se->conn.proto_minor >= 14) {
 
 1986 #ifdef HAVE_VMSPLICE 
 1992         if (se->conn.proto_minor >= 18)
 
 2002 #define LL_SET_DEFAULT(cond, cap) \ 
 2003         if ((cond) && (se->conn.capable & (cap))) \ 
 2004                 se->conn.want |= (cap) 
 2013         LL_SET_DEFAULT(se->op.getlk && se->op.setlk,
 
 2017         LL_SET_DEFAULT(se->op.readdirplus && se->op.readdir,
 
 2019         se->conn.time_gran = 1;
 
 2021         if (bufsize < FUSE_MIN_READ_BUFFER) {
 
 2022                 fuse_log(FUSE_LOG_ERR, 
"fuse: warning: buffer size too small: %zu\n",
 
 2024                 bufsize = FUSE_MIN_READ_BUFFER;
 
 2026         se->bufsize = bufsize;
 
 2028         if (se->conn.max_write > bufsize - FUSE_BUFFER_HEADER_SIZE)
 
 2029                 se->conn.max_write = bufsize - FUSE_BUFFER_HEADER_SIZE;
 
 2033                 se->op.init(se->userdata, &se->conn);
 
 2035         if (se->conn.want & (~se->conn.capable)) {
 
 2036                 fuse_log(FUSE_LOG_ERR, 
"fuse: error: filesystem requested capabilities " 
 2037                         "0x%x that are not supported by kernel, aborting.\n",
 
 2038                         se->conn.want & (~se->conn.capable));
 
 2040                 se->error = -EPROTO;
 
 2045         unsigned max_read_mo = get_max_read(se->mo);
 
 2046         if (se->conn.max_read != max_read_mo) {
 
 2047                 fuse_log(FUSE_LOG_ERR, 
"fuse: error: init() and fuse_session_new() " 
 2048                         "requested different maximum read size (%u vs %u)\n",
 
 2049                         se->conn.max_read, max_read_mo);
 
 2051                 se->error = -EPROTO;
 
 2056         if (se->conn.max_write < bufsize - FUSE_BUFFER_HEADER_SIZE) {
 
 2057                 se->bufsize = se->conn.max_write + FUSE_BUFFER_HEADER_SIZE;
 
 2059         if (arg->flags & FUSE_MAX_PAGES) {
 
 2060                 outarg.flags |= FUSE_MAX_PAGES;
 
 2061                 outarg.max_pages = (se->conn.max_write - 1) / getpagesize() + 1;
 
 2066         outarg.flags |= FUSE_BIG_WRITES;
 
 2069                 outarg.flags |= FUSE_ASYNC_READ;
 
 2071                 outarg.flags |= FUSE_POSIX_LOCKS;
 
 2073                 outarg.flags |= FUSE_ATOMIC_O_TRUNC;
 
 2075                 outarg.flags |= FUSE_EXPORT_SUPPORT;
 
 2077                 outarg.flags |= FUSE_DONT_MASK;
 
 2079                 outarg.flags |= FUSE_FLOCK_LOCKS;
 
 2081                 outarg.flags |= FUSE_AUTO_INVAL_DATA;
 
 2083                 outarg.flags |= FUSE_DO_READDIRPLUS;
 
 2085                 outarg.flags |= FUSE_READDIRPLUS_AUTO;
 
 2087                 outarg.flags |= FUSE_ASYNC_DIO;
 
 2089                 outarg.flags |= FUSE_WRITEBACK_CACHE;
 
 2091                 outarg.flags |= FUSE_POSIX_ACL;
 
 2093                 outarg.flags |= FUSE_CACHE_SYMLINKS;
 
 2095                 outarg.flags |= FUSE_EXPLICIT_INVAL_DATA;
 
 2096         outarg.max_readahead = se->conn.max_readahead;
 
 2097         outarg.max_write = se->conn.max_write;
 
 2098         if (se->conn.proto_minor >= 13) {
 
 2099                 if (se->conn.max_background >= (1 << 16))
 
 2100                         se->conn.max_background = (1 << 16) - 1;
 
 2101                 if (se->conn.congestion_threshold > se->conn.max_background)
 
 2102                         se->conn.congestion_threshold = se->conn.max_background;
 
 2103                 if (!se->conn.congestion_threshold) {
 
 2104                         se->conn.congestion_threshold =
 
 2105                                 se->conn.max_background * 3 / 4;
 
 2108                 outarg.max_background = se->conn.max_background;
 
 2109                 outarg.congestion_threshold = se->conn.congestion_threshold;
 
 2111         if (se->conn.proto_minor >= 23)
 
 2112                 outarg.time_gran = se->conn.time_gran;
 
 2115                 fuse_log(FUSE_LOG_DEBUG, 
"   INIT: %u.%u\n", outarg.major, outarg.minor);
 
 2116                 fuse_log(FUSE_LOG_DEBUG, 
"   flags=0x%08x\n", outarg.flags);
 
 2117                 fuse_log(FUSE_LOG_DEBUG, 
"   max_readahead=0x%08x\n",
 
 2118                         outarg.max_readahead);
 
 2119                 fuse_log(FUSE_LOG_DEBUG, 
"   max_write=0x%08x\n", outarg.max_write);
 
 2120                 fuse_log(FUSE_LOG_DEBUG, 
"   max_background=%i\n",
 
 2121                         outarg.max_background);
 
 2122                 fuse_log(FUSE_LOG_DEBUG, 
"   congestion_threshold=%i\n",
 
 2123                         outarg.congestion_threshold);
 
 2124                 fuse_log(FUSE_LOG_DEBUG, 
"   time_gran=%u\n",
 
 2128                 outargsize = FUSE_COMPAT_INIT_OUT_SIZE;
 
 2129         else if (arg->minor < 23)
 
 2130                 outargsize = FUSE_COMPAT_22_INIT_OUT_SIZE;
 
 2132         send_reply_ok(req, &outarg, outargsize);
 
 2137         struct fuse_session *se = req->se;
 
 2142         se->got_destroy = 1;
 
 2144                 se->op.destroy(se->userdata);
 
 2146         send_reply_ok(req, NULL, 0);
 
 2149 static void list_del_nreq(
struct fuse_notify_req *nreq)
 
 2151         struct fuse_notify_req *prev = nreq->prev;
 
 2152         struct fuse_notify_req *next = nreq->next;
 
 2157 static void list_add_nreq(
struct fuse_notify_req *nreq,
 
 2158                           struct fuse_notify_req *next)
 
 2160         struct fuse_notify_req *prev = next->prev;
 
 2167 static void list_init_nreq(
struct fuse_notify_req *nreq)
 
 2174                             const void *inarg, 
const struct fuse_buf *buf)
 
 2176         struct fuse_session *se = req->se;
 
 2177         struct fuse_notify_req *nreq;
 
 2178         struct fuse_notify_req *head;
 
 2180         pthread_mutex_lock(&se->lock);
 
 2181         head = &se->notify_list;
 
 2182         for (nreq = head->next; nreq != head; nreq = nreq->next) {
 
 2183                 if (nreq->unique == req->unique) {
 
 2184                         list_del_nreq(nreq);
 
 2188         pthread_mutex_unlock(&se->lock);
 
 2191                 nreq->reply(nreq, req, nodeid, inarg, buf);
 
 2194 static int send_notify_iov(
struct fuse_session *se, 
int notify_code,
 
 2195                            struct iovec *iov, 
int count)
 
 2197         struct fuse_out_header out;
 
 2203         out.error = notify_code;
 
 2204         iov[0].iov_base = &out;
 
 2205         iov[0].iov_len = 
sizeof(
struct fuse_out_header);
 
 2207         return fuse_send_msg(se, NULL, iov, count);
 
 2213                 struct fuse_notify_poll_wakeup_out outarg;
 
 2214                 struct iovec iov[2];
 
 2218                 iov[1].iov_base = &outarg;
 
 2219                 iov[1].iov_len = 
sizeof(outarg);
 
 2221                 return send_notify_iov(ph->se, FUSE_NOTIFY_POLL, iov, 2);
 
 2228                                      off_t off, off_t len)
 
 2230         struct fuse_notify_inval_inode_out outarg;
 
 2231         struct iovec iov[2];
 
 2236         if (se->conn.proto_minor < 12)
 
 2243         iov[1].iov_base = &outarg;
 
 2244         iov[1].iov_len = 
sizeof(outarg);
 
 2246         return send_notify_iov(se, FUSE_NOTIFY_INVAL_INODE, iov, 2);
 
 2250                                      const char *name, 
size_t namelen)
 
 2252         struct fuse_notify_inval_entry_out outarg;
 
 2253         struct iovec iov[3];
 
 2258         if (se->conn.proto_minor < 12)
 
 2261         outarg.parent = parent;
 
 2262         outarg.namelen = namelen;
 
 2265         iov[1].iov_base = &outarg;
 
 2266         iov[1].iov_len = 
sizeof(outarg);
 
 2267         iov[2].iov_base = (
void *)name;
 
 2268         iov[2].iov_len = namelen + 1;
 
 2270         return send_notify_iov(se, FUSE_NOTIFY_INVAL_ENTRY, iov, 3);
 
 2275                                 const char *name, 
size_t namelen)
 
 2277         struct fuse_notify_delete_out outarg;
 
 2278         struct iovec iov[3];
 
 2283         if (se->conn.proto_minor < 18)
 
 2286         outarg.parent = parent;
 
 2287         outarg.child = child;
 
 2288         outarg.namelen = namelen;
 
 2291         iov[1].iov_base = &outarg;
 
 2292         iov[1].iov_len = 
sizeof(outarg);
 
 2293         iov[2].iov_base = (
void *)name;
 
 2294         iov[2].iov_len = namelen + 1;
 
 2296         return send_notify_iov(se, FUSE_NOTIFY_DELETE, iov, 3);
 
 2303         struct fuse_out_header out;
 
 2304         struct fuse_notify_store_out outarg;
 
 2305         struct iovec iov[3];
 
 2312         if (se->conn.proto_minor < 15)
 
 2316         out.error = FUSE_NOTIFY_STORE;
 
 2318         outarg.nodeid = ino;
 
 2319         outarg.offset = offset;
 
 2323         iov[0].iov_base = &out;
 
 2324         iov[0].iov_len = 
sizeof(out);
 
 2325         iov[1].iov_base = &outarg;
 
 2326         iov[1].iov_len = 
sizeof(outarg);
 
 2328         res = fuse_send_data_iov(se, NULL, iov, 2, bufv, flags);
 
 2335 struct fuse_retrieve_req {
 
 2336         struct fuse_notify_req nreq;
 
 2340 static void fuse_ll_retrieve_reply(
struct fuse_notify_req *nreq,
 
 2345         struct fuse_session *se = req->se;
 
 2346         struct fuse_retrieve_req *rreq =
 
 2347                 container_of(nreq, 
struct fuse_retrieve_req, nreq);
 
 2348         const struct fuse_notify_retrieve_in *arg = inarg;
 
 2355                 bufv.
buf[0].
mem = PARAM(arg);
 
 2357         bufv.
buf[0].
size -= 
sizeof(
struct fuse_in_header) +
 
 2358                 sizeof(struct fuse_notify_retrieve_in);
 
 2360         if (bufv.
buf[0].
size < arg->size) {
 
 2361                 fuse_log(FUSE_LOG_ERR, 
"fuse: retrieve reply: buffer size too small\n");
 
 2367         if (se->op.retrieve_reply) {
 
 2368                 se->op.retrieve_reply(req, rreq->cookie, ino,
 
 2369                                           arg->offset, &bufv);
 
 2376                 fuse_ll_clear_pipe(se);
 
 2380                                   size_t size, off_t offset, 
void *cookie)
 
 2382         struct fuse_notify_retrieve_out outarg;
 
 2383         struct iovec iov[2];
 
 2384         struct fuse_retrieve_req *rreq;
 
 2390         if (se->conn.proto_minor < 15)
 
 2393         rreq = malloc(
sizeof(*rreq));
 
 2397         pthread_mutex_lock(&se->lock);
 
 2398         rreq->cookie = cookie;
 
 2399         rreq->nreq.unique = se->notify_ctr++;
 
 2400         rreq->nreq.reply = fuse_ll_retrieve_reply;
 
 2401         list_add_nreq(&rreq->nreq, &se->notify_list);
 
 2402         pthread_mutex_unlock(&se->lock);
 
 2404         outarg.notify_unique = rreq->nreq.unique;
 
 2405         outarg.nodeid = ino;
 
 2406         outarg.offset = offset;
 
 2410         iov[1].iov_base = &outarg;
 
 2411         iov[1].iov_len = 
sizeof(outarg);
 
 2413         err = send_notify_iov(se, FUSE_NOTIFY_RETRIEVE, iov, 2);
 
 2415                 pthread_mutex_lock(&se->lock);
 
 2416                 list_del_nreq(&rreq->nreq);
 
 2417                 pthread_mutex_unlock(&se->lock);
 
 2426         return req->se->userdata;
 
 2437         pthread_mutex_lock(&req->lock);
 
 2438         pthread_mutex_lock(&req->se->lock);
 
 2439         req->u.ni.func = func;
 
 2440         req->u.ni.data = data;
 
 2441         pthread_mutex_unlock(&req->se->lock);
 
 2442         if (req->interrupted && func)
 
 2444         pthread_mutex_unlock(&req->lock);
 
 2451         pthread_mutex_lock(&req->se->lock);
 
 2452         interrupted = req->interrupted;
 
 2453         pthread_mutex_unlock(&req->se->lock);
 
 2462         [FUSE_LOOKUP]      = { do_lookup,      
"LOOKUP"      },
 
 2463         [FUSE_FORGET]      = { do_forget,      
"FORGET"      },
 
 2464         [FUSE_GETATTR]     = { do_getattr,     
"GETATTR"     },
 
 2465         [FUSE_SETATTR]     = { do_setattr,     
"SETATTR"     },
 
 2466         [FUSE_READLINK]    = { do_readlink,    
"READLINK"    },
 
 2467         [FUSE_SYMLINK]     = { do_symlink,     
"SYMLINK"     },
 
 2468         [FUSE_MKNOD]       = { do_mknod,       
"MKNOD"       },
 
 2469         [FUSE_MKDIR]       = { do_mkdir,       
"MKDIR"       },
 
 2470         [FUSE_UNLINK]      = { do_unlink,      
"UNLINK"      },
 
 2471         [FUSE_RMDIR]       = { do_rmdir,       
"RMDIR"       },
 
 2472         [FUSE_RENAME]      = { do_rename,      
"RENAME"      },
 
 2473         [FUSE_LINK]        = { do_link,        
"LINK"        },
 
 2474         [FUSE_OPEN]        = { do_open,        
"OPEN"        },
 
 2475         [FUSE_READ]        = { do_read,        
"READ"        },
 
 2476         [FUSE_WRITE]       = { do_write,       
"WRITE"       },
 
 2477         [FUSE_STATFS]      = { do_statfs,      
"STATFS"      },
 
 2478         [FUSE_RELEASE]     = { do_release,     
"RELEASE"     },
 
 2479         [FUSE_FSYNC]       = { do_fsync,       
"FSYNC"       },
 
 2480         [FUSE_SETXATTR]    = { do_setxattr,    
"SETXATTR"    },
 
 2481         [FUSE_GETXATTR]    = { do_getxattr,    
"GETXATTR"    },
 
 2482         [FUSE_LISTXATTR]   = { do_listxattr,   
"LISTXATTR"   },
 
 2483         [FUSE_REMOVEXATTR] = { do_removexattr, 
"REMOVEXATTR" },
 
 2484         [FUSE_FLUSH]       = { do_flush,       
"FLUSH"       },
 
 2485         [FUSE_INIT]        = { do_init,        
"INIT"        },
 
 2486         [FUSE_OPENDIR]     = { do_opendir,     
"OPENDIR"     },
 
 2487         [FUSE_READDIR]     = { do_readdir,     
"READDIR"     },
 
 2488         [FUSE_RELEASEDIR]  = { do_releasedir,  
"RELEASEDIR"  },
 
 2489         [FUSE_FSYNCDIR]    = { do_fsyncdir,    
"FSYNCDIR"    },
 
 2490         [FUSE_GETLK]       = { do_getlk,       
"GETLK"       },
 
 2491         [FUSE_SETLK]       = { do_setlk,       
"SETLK"       },
 
 2492         [FUSE_SETLKW]      = { do_setlkw,      
"SETLKW"      },
 
 2493         [FUSE_ACCESS]      = { do_access,      
"ACCESS"      },
 
 2494         [FUSE_CREATE]      = { do_create,      
"CREATE"      },
 
 2495         [FUSE_INTERRUPT]   = { do_interrupt,   
"INTERRUPT"   },
 
 2496         [FUSE_BMAP]        = { do_bmap,        
"BMAP"        },
 
 2497         [FUSE_IOCTL]       = { do_ioctl,       
"IOCTL"       },
 
 2498         [FUSE_POLL]        = { do_poll,        
"POLL"        },
 
 2499         [FUSE_FALLOCATE]   = { do_fallocate,   
"FALLOCATE"   },
 
 2500         [FUSE_DESTROY]     = { do_destroy,     
"DESTROY"     },
 
 2501         [FUSE_NOTIFY_REPLY] = { (
void *) 1,    
"NOTIFY_REPLY" },
 
 2502         [FUSE_BATCH_FORGET] = { do_batch_forget, 
"BATCH_FORGET" },
 
 2503         [FUSE_READDIRPLUS] = { do_readdirplus,  
"READDIRPLUS"},
 
 2504         [FUSE_RENAME2]     = { do_rename2,      
"RENAME2"    },
 
 2505         [FUSE_COPY_FILE_RANGE] = { do_copy_file_range, 
"COPY_FILE_RANGE" },
 
 2506         [FUSE_LSEEK]       = { do_lseek,       
"LSEEK"       },
 
 2507         [CUSE_INIT]        = { cuse_lowlevel_init, 
"CUSE_INIT"   },
 
 2510 #define FUSE_MAXOP (sizeof(fuse_ll_ops) / sizeof(fuse_ll_ops[0])) 
 2512 static const char *opname(
enum fuse_opcode opcode)
 
 2514         if (opcode >= FUSE_MAXOP || !fuse_ll_ops[opcode].name)
 
 2517                 return fuse_ll_ops[opcode].name;
 
 2520 static int fuse_ll_copy_from_pipe(
struct fuse_bufvec *dst,
 
 2525                 fuse_log(FUSE_LOG_ERR, 
"fuse: copy from pipe: %s\n", strerror(-res));
 
 2529                 fuse_log(FUSE_LOG_ERR, 
"fuse: copy from pipe: short read\n");
 
 2538         fuse_session_process_buf_int(se, buf, NULL);
 
 2541 void fuse_session_process_buf_int(
struct fuse_session *se,
 
 2542                                   const struct fuse_buf *buf, 
struct fuse_chan *ch)
 
 2544         const size_t write_header_size = 
sizeof(
struct fuse_in_header) +
 
 2545                 sizeof(struct fuse_write_in);
 
 2547         struct fuse_bufvec tmpbuf = FUSE_BUFVEC_INIT(write_header_size);
 
 2548         struct fuse_in_header *in;
 
 2550         struct fuse_req *req;
 
 2559                 mbuf = malloc(tmpbuf.
buf[0].
size);
 
 2561                         fuse_log(FUSE_LOG_ERR, 
"fuse: failed to allocate header\n");
 
 2564                 tmpbuf.
buf[0].
mem = mbuf;
 
 2566                 res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv);
 
 2577                         "unique: %llu, opcode: %s (%i), nodeid: %llu, insize: %zu, pid: %u\n",
 
 2578                         (
unsigned long long) in->unique,
 
 2579                         opname((
enum fuse_opcode) in->opcode), in->opcode,
 
 2580                         (
unsigned long long) in->nodeid, buf->
size, in->pid);
 
 2583         req = fuse_ll_alloc_req(se);
 
 2585                 struct fuse_out_header out = {
 
 2586                         .unique = in->unique,
 
 2589                 struct iovec iov = {
 
 2591                         .iov_len = 
sizeof(
struct fuse_out_header),
 
 2594                 fuse_send_msg(se, ch, &iov, 1);
 
 2598         req->unique = in->unique;
 
 2599         req->ctx.uid = in->uid;
 
 2600         req->ctx.gid = in->gid;
 
 2601         req->ctx.pid = in->pid;
 
 2602         req->ch = ch ? fuse_chan_get(ch) : NULL;
 
 2605         if (!se->got_init) {
 
 2606                 enum fuse_opcode expected;
 
 2608                 expected = se->cuse_data ? CUSE_INIT : FUSE_INIT;
 
 2609                 if (in->opcode != expected)
 
 2611         } 
else if (in->opcode == FUSE_INIT || in->opcode == CUSE_INIT)
 
 2616         if (se->deny_others && in->uid != se->owner && in->uid != 0 &&
 
 2617                  in->opcode != FUSE_INIT && in->opcode != FUSE_READ &&
 
 2618                  in->opcode != FUSE_WRITE && in->opcode != FUSE_FSYNC &&
 
 2619                  in->opcode != FUSE_RELEASE && in->opcode != FUSE_READDIR &&
 
 2620                  in->opcode != FUSE_FSYNCDIR && in->opcode != FUSE_RELEASEDIR &&
 
 2621                  in->opcode != FUSE_NOTIFY_REPLY &&
 
 2622                  in->opcode != FUSE_READDIRPLUS)
 
 2626         if (in->opcode >= FUSE_MAXOP || !fuse_ll_ops[in->opcode].func)
 
 2628         if (in->opcode != FUSE_INTERRUPT) {
 
 2629                 struct fuse_req *intr;
 
 2630                 pthread_mutex_lock(&se->lock);
 
 2631                 intr = check_interrupt(se, req);
 
 2632                 list_add_req(req, &se->list);
 
 2633                 pthread_mutex_unlock(&se->lock);
 
 2639             (in->opcode != FUSE_WRITE || !se->op.write_buf) &&
 
 2640             in->opcode != FUSE_NOTIFY_REPLY) {
 
 2644                 newmbuf = realloc(mbuf, buf->
size);
 
 2645                 if (newmbuf == NULL)
 
 2649                 tmpbuf = FUSE_BUFVEC_INIT(buf->
size - write_header_size);
 
 2650                 tmpbuf.
buf[0].
mem = (
char *)mbuf + write_header_size;
 
 2652                 res = fuse_ll_copy_from_pipe(&tmpbuf, &bufv);
 
 2660         inarg = (
void *) &in[1];
 
 2661         if (in->opcode == FUSE_WRITE && se->op.write_buf)
 
 2662                 do_write_buf(req, in->nodeid, inarg, buf);
 
 2663         else if (in->opcode == FUSE_NOTIFY_REPLY)
 
 2664                 do_notify_reply(req, in->nodeid, inarg, buf);
 
 2666                 fuse_ll_ops[in->opcode].func(req, in->nodeid, inarg);
 
 2676                 fuse_ll_clear_pipe(se);
 
 2680 #define LL_OPTION(n,o,v) \ 
 2681         { n, offsetof(struct fuse_session, o), v } 
 2683 static const struct fuse_opt fuse_ll_opts[] = {
 
 2684         LL_OPTION(
"debug", debug, 1),
 
 2685         LL_OPTION(
"-d", debug, 1),
 
 2686         LL_OPTION(
"--debug", debug, 1),
 
 2687         LL_OPTION(
"allow_root", deny_others, 1),
 
 2693         printf(
"using FUSE kernel interface version %i.%i\n",
 
 2694                FUSE_KERNEL_VERSION, FUSE_KERNEL_MINOR_VERSION);
 
 2695         fuse_mount_version();
 
 2703 "    -o allow_other         allow access by all users\n" 
 2704 "    -o allow_root          allow access by root\n" 
 2705 "    -o auto_unmount        auto unmount on process termination\n");
 
 2710         struct fuse_ll_pipe *llp;
 
 2712         if (se->got_init && !se->got_destroy) {
 
 2714                         se->op.destroy(se->userdata);
 
 2716         llp = pthread_getspecific(se->pipe_key);
 
 2718                 fuse_ll_pipe_free(llp);
 
 2719         pthread_key_delete(se->pipe_key);
 
 2720         pthread_mutex_destroy(&se->lock);
 
 2721         free(se->cuse_data);
 
 2724         destroy_mount_opts(se->mo);
 
 2729 static void fuse_ll_pipe_destructor(
void *data)
 
 2731         struct fuse_ll_pipe *llp = data;
 
 2732         fuse_ll_pipe_free(llp);
 
 2737         return fuse_session_receive_buf_int(se, buf, NULL);
 
 2740 int fuse_session_receive_buf_int(
struct fuse_session *se, 
struct fuse_buf *buf,
 
 2741                                  struct fuse_chan *ch)
 
 2746         size_t bufsize = se->bufsize;
 
 2747         struct fuse_ll_pipe *llp;
 
 2753         llp = fuse_ll_get_pipe(se);
 
 2757         if (llp->size < bufsize) {
 
 2758                 if (llp->can_grow) {
 
 2759                         res = fcntl(llp->pipe[0], F_SETPIPE_SZ, bufsize);
 
 2762                                 res = grow_pipe_to_max(llp->pipe[0]);
 
 2769                 if (llp->size < bufsize)
 
 2773         res = splice(ch ? ch->fd : se->fd,
 
 2774                      NULL, llp->pipe[1], NULL, bufsize, 0);
 
 2781                 if (err == ENODEV) {
 
 2787                 if (err != EINTR && err != EAGAIN)
 
 2788                         perror(
"fuse: splice from device");
 
 2792         if (res < 
sizeof(
struct fuse_in_header)) {
 
 2793                 fuse_log(FUSE_LOG_ERR, 
"short splice from fuse device\n");
 
 2808         if (res < 
sizeof(
struct fuse_in_header) +
 
 2809             sizeof(
struct fuse_write_in) + pagesize) {
 
 2814                         buf->
mem = malloc(se->bufsize);
 
 2817                                         "fuse: failed to allocate read buffer\n");
 
 2827                         fuse_log(FUSE_LOG_ERR, 
"fuse: copy from pipe: %s\n",
 
 2829                         fuse_ll_clear_pipe(se);
 
 2832                 if (res < tmpbuf.size) {
 
 2833                         fuse_log(FUSE_LOG_ERR, 
"fuse: copy from pipe: short read\n");
 
 2834                         fuse_ll_clear_pipe(se);
 
 2837                 assert(res == tmpbuf.size);
 
 2841                 buf->
fd = tmpbuf.fd;
 
 2851                 buf->
mem = malloc(se->bufsize);
 
 2854                                 "fuse: failed to allocate read buffer\n");
 
 2860         res = read(ch ? ch->fd : se->fd, 
buf->
mem, se->bufsize);
 
 2871                 if (err == ENODEV) {
 
 2880                 if (err != EINTR && err != EAGAIN)
 
 2881                         perror(
"fuse: reading device");
 
 2884         if ((
size_t) res < 
sizeof(
struct fuse_in_header)) {
 
 2885                 fuse_log(FUSE_LOG_ERR, 
"short read on fuse device\n");
 
 2896                                       size_t op_size, 
void *userdata)
 
 2899         struct fuse_session *se;
 
 2900         struct mount_opts *mo;
 
 2903                 fuse_log(FUSE_LOG_ERR, 
"fuse: warning: library too old, some operations may not work\n");
 
 2907         if (args->
argc == 0) {
 
 2908                 fuse_log(FUSE_LOG_ERR, 
"fuse: empty argv passed to fuse_session_new().\n");
 
 2912         se = (
struct fuse_session *) calloc(1, 
sizeof(
struct fuse_session));
 
 2914                 fuse_log(FUSE_LOG_ERR, 
"fuse: failed to allocate fuse object\n");
 
 2918         se->conn.max_write = UINT_MAX;
 
 2919         se->conn.max_readahead = UINT_MAX;
 
 2924         if(se->deny_others) {
 
 2934         mo = parse_mount_opts(args);
 
 2938         if(args->
argc == 1 &&
 
 2939            args->
argv[0][0] == 
'-') {
 
 2940                 fuse_log(FUSE_LOG_ERR, 
"fuse: warning: argv[0] looks like an option, but " 
 2941                         "will be ignored\n");
 
 2942         } 
else if (args->
argc != 1) {
 
 2944                 fuse_log(FUSE_LOG_ERR, 
"fuse: unknown option(s): `");
 
 2945                 for(i = 1; i < args->
argc-1; i++)
 
 2952                 fuse_log(FUSE_LOG_DEBUG, 
"FUSE library version: %s\n", PACKAGE_VERSION);
 
 2954         se->bufsize = FUSE_MAX_MAX_PAGES * getpagesize() +
 
 2955                 FUSE_BUFFER_HEADER_SIZE;
 
 2957         list_init_req(&se->list);
 
 2958         list_init_req(&se->interrupts);
 
 2959         list_init_nreq(&se->notify_list);
 
 2961         pthread_mutex_init(&se->lock, NULL);
 
 2963         err = pthread_key_create(&se->pipe_key, fuse_ll_pipe_destructor);
 
 2965                 fuse_log(FUSE_LOG_ERR, 
"fuse: failed to create thread specific key: %s\n",
 
 2970         memcpy(&se->op, op, op_size);
 
 2971         se->owner = getuid();
 
 2972         se->userdata = userdata;
 
 2978         pthread_mutex_destroy(&se->lock);
 
 2983                 destroy_mount_opts(mo);
 
 2999                 fd = open(
"/dev/null", O_RDWR);
 
 3002         } 
while (fd >= 0 && fd <= 2);
 
 3010         fd = fuse_mnt_parse_fuse_fd(mountpoint);
 
 3012                 if (fcntl(fd, F_GETFD) == -1) {
 
 3014                                 "fuse: Invalid file descriptor /dev/fd/%u\n",
 
 3023         fd = fuse_kern_mount(mountpoint, se->mo);
 
 3029         se->mountpoint = strdup(mountpoint);
 
 3030         if (se->mountpoint == NULL)
 
 3036         fuse_kern_unmount(mountpoint, fd);
 
 3047         if (se->mountpoint != NULL) {
 
 3048                 fuse_kern_unmount(se->mountpoint, se->fd);
 
 3050                 free(se->mountpoint);
 
 3051                 se->mountpoint = NULL;
 
 3059         size_t bufsize = 1024;
 
 3063         unsigned long pid = req->ctx.pid;
 
 3066         sprintf(path, 
"/proc/%lu/task/%lu/status", pid, pid);
 
 3069         buf = malloc(bufsize);
 
 3074         fd = open(path, O_RDONLY);
 
 3078         ret = read(fd, buf, bufsize);
 
 3085         if ((
size_t)ret == bufsize) {
 
 3092         s = strstr(buf, 
"\nGroups:");
 
 3100                 unsigned long val = strtoul(s, &end, 0);
 
 3120         (void) req; (void) size; (void) list;
 
 3127 __attribute__((no_sanitize_thread))
 
 3133 __attribute__((no_sanitize_thread))
 
 3140 __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