diff options
Diffstat (limited to 'fs/fuse')
| -rw-r--r-- | fs/fuse/cuse.c | 8 | ||||
| -rw-r--r-- | fs/fuse/dev.c | 53 | ||||
| -rw-r--r-- | fs/fuse/dir.c | 41 | ||||
| -rw-r--r-- | fs/fuse/file.c | 152 | ||||
| -rw-r--r-- | fs/fuse/fuse_i.h | 5 | ||||
| -rw-r--r-- | fs/fuse/inode.c | 27 |
6 files changed, 137 insertions, 149 deletions
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c index 13b691a8a7d..966ace8b243 100644 --- a/fs/fuse/cuse.c +++ b/fs/fuse/cuse.c @@ -94,8 +94,10 @@ static ssize_t cuse_read(struct file *file, char __user *buf, size_t count, loff_t pos = 0; struct iovec iov = { .iov_base = buf, .iov_len = count }; struct fuse_io_priv io = { .async = 0, .file = file }; + struct iov_iter ii; + iov_iter_init(&ii, READ, &iov, 1, count); - return fuse_direct_io(&io, &iov, 1, count, &pos, FUSE_DIO_CUSE); + return fuse_direct_io(&io, &ii, &pos, FUSE_DIO_CUSE); } static ssize_t cuse_write(struct file *file, const char __user *buf, @@ -104,12 +106,14 @@ static ssize_t cuse_write(struct file *file, const char __user *buf, loff_t pos = 0; struct iovec iov = { .iov_base = (void __user *)buf, .iov_len = count }; struct fuse_io_priv io = { .async = 0, .file = file }; + struct iov_iter ii; + iov_iter_init(&ii, WRITE, &iov, 1, count); /* * No locking or generic_write_checks(), the server is * responsible for locking and sanity checks. */ - return fuse_direct_io(&io, &iov, 1, count, &pos, + return fuse_direct_io(&io, &ii, &pos, FUSE_DIO_WRITE | FUSE_DIO_CUSE); } diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c index aac71ce373e..ca887314aba 100644 --- a/fs/fuse/dev.c +++ b/fs/fuse/dev.c @@ -643,9 +643,8 @@ struct fuse_copy_state { unsigned long seglen; unsigned long addr; struct page *pg; - void *mapaddr; - void *buf; unsigned len; + unsigned offset; unsigned move_pages:1; }; @@ -666,23 +665,17 @@ static void fuse_copy_finish(struct fuse_copy_state *cs) if (cs->currbuf) { struct pipe_buffer *buf = cs->currbuf; - if (!cs->write) { - kunmap_atomic(cs->mapaddr); - } else { - kunmap_atomic(cs->mapaddr); + if (cs->write) buf->len = PAGE_SIZE - cs->len; - } cs->currbuf = NULL; - cs->mapaddr = NULL; - } else if (cs->mapaddr) { - kunmap_atomic(cs->mapaddr); + } else if (cs->pg) { if (cs->write) { flush_dcache_page(cs->pg); set_page_dirty_lock(cs->pg); } put_page(cs->pg); - cs->mapaddr = NULL; } + cs->pg = NULL; } /* @@ -691,7 +684,7 @@ static void fuse_copy_finish(struct fuse_copy_state *cs) */ static int fuse_copy_fill(struct fuse_copy_state *cs) { - unsigned long offset; + struct page *page; int err; unlock_request(cs->fc, cs->req); @@ -706,14 +699,12 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) BUG_ON(!cs->nr_segs); cs->currbuf = buf; - cs->mapaddr = kmap_atomic(buf->page); + cs->pg = buf->page; + cs->offset = buf->offset; cs->len = buf->len; - cs->buf = cs->mapaddr + buf->offset; cs->pipebufs++; cs->nr_segs--; } else { - struct page *page; - if (cs->nr_segs == cs->pipe->buffers) return -EIO; @@ -726,8 +717,8 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) buf->len = 0; cs->currbuf = buf; - cs->mapaddr = kmap_atomic(page); - cs->buf = cs->mapaddr; + cs->pg = page; + cs->offset = 0; cs->len = PAGE_SIZE; cs->pipebufs++; cs->nr_segs++; @@ -740,14 +731,13 @@ static int fuse_copy_fill(struct fuse_copy_state *cs) cs->iov++; cs->nr_segs--; } - err = get_user_pages_fast(cs->addr, 1, cs->write, &cs->pg); + err = get_user_pages_fast(cs->addr, 1, cs->write, &page); if (err < 0) return err; BUG_ON(err != 1); - offset = cs->addr % PAGE_SIZE; - cs->mapaddr = kmap_atomic(cs->pg); - cs->buf = cs->mapaddr + offset; - cs->len = min(PAGE_SIZE - offset, cs->seglen); + cs->pg = page; + cs->offset = cs->addr % PAGE_SIZE; + cs->len = min(PAGE_SIZE - cs->offset, cs->seglen); cs->seglen -= cs->len; cs->addr += cs->len; } @@ -760,15 +750,20 @@ static int fuse_copy_do(struct fuse_copy_state *cs, void **val, unsigned *size) { unsigned ncpy = min(*size, cs->len); if (val) { + void *pgaddr = kmap_atomic(cs->pg); + void *buf = pgaddr + cs->offset; + if (cs->write) - memcpy(cs->buf, *val, ncpy); + memcpy(buf, *val, ncpy); else - memcpy(*val, cs->buf, ncpy); + memcpy(*val, buf, ncpy); + + kunmap_atomic(pgaddr); *val += ncpy; } *size -= ncpy; cs->len -= ncpy; - cs->buf += ncpy; + cs->offset += ncpy; return ncpy; } @@ -874,8 +869,8 @@ static int fuse_try_move_page(struct fuse_copy_state *cs, struct page **pagep) out_fallback_unlock: unlock_page(newpage); out_fallback: - cs->mapaddr = kmap_atomic(buf->page); - cs->buf = cs->mapaddr + buf->offset; + cs->pg = buf->page; + cs->offset = buf->offset; err = lock_request(cs->fc, cs->req); if (err) @@ -1614,7 +1609,7 @@ out_finish: static void fuse_retrieve_end(struct fuse_conn *fc, struct fuse_req *req) { - release_pages(req->pages, req->num_pages, 0); + release_pages(req->pages, req->num_pages, false); } static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode, diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c index 42198359fa1..0c6048247a3 100644 --- a/fs/fuse/dir.c +++ b/fs/fuse/dir.c @@ -198,7 +198,8 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags) inode = ACCESS_ONCE(entry->d_inode); if (inode && is_bad_inode(inode)) goto invalid; - else if (fuse_dentry_time(entry) < get_jiffies_64()) { + else if (time_before64(fuse_dentry_time(entry), get_jiffies_64()) || + (flags & LOOKUP_REVAL)) { int err; struct fuse_entry_out outarg; struct fuse_req *req; @@ -814,13 +815,6 @@ static int fuse_rename_common(struct inode *olddir, struct dentry *oldent, return err; } -static int fuse_rename(struct inode *olddir, struct dentry *oldent, - struct inode *newdir, struct dentry *newent) -{ - return fuse_rename_common(olddir, oldent, newdir, newent, 0, - FUSE_RENAME, sizeof(struct fuse_rename_in)); -} - static int fuse_rename2(struct inode *olddir, struct dentry *oldent, struct inode *newdir, struct dentry *newent, unsigned int flags) @@ -831,17 +825,30 @@ static int fuse_rename2(struct inode *olddir, struct dentry *oldent, if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE)) return -EINVAL; - if (fc->no_rename2 || fc->minor < 23) - return -EINVAL; + if (flags) { + if (fc->no_rename2 || fc->minor < 23) + return -EINVAL; - err = fuse_rename_common(olddir, oldent, newdir, newent, flags, - FUSE_RENAME2, sizeof(struct fuse_rename2_in)); - if (err == -ENOSYS) { - fc->no_rename2 = 1; - err = -EINVAL; + err = fuse_rename_common(olddir, oldent, newdir, newent, flags, + FUSE_RENAME2, + sizeof(struct fuse_rename2_in)); + if (err == -ENOSYS) { + fc->no_rename2 = 1; + err = -EINVAL; + } + } else { + err = fuse_rename_common(olddir, oldent, newdir, newent, 0, + FUSE_RENAME, + sizeof(struct fuse_rename_in)); } + return err; +} +static int fuse_rename(struct inode *olddir, struct dentry *oldent, + struct inode *newdir, struct dentry *newent) +{ + return fuse_rename2(olddir, oldent, newdir, newent, 0); } static int fuse_link(struct dentry *entry, struct inode *newdir, @@ -985,7 +992,7 @@ int fuse_update_attributes(struct inode *inode, struct kstat *stat, int err; bool r; - if (fi->i_time < get_jiffies_64()) { + if (time_before64(fi->i_time, get_jiffies_64())) { r = true; err = fuse_do_getattr(inode, stat, file); } else { @@ -1171,7 +1178,7 @@ static int fuse_permission(struct inode *inode, int mask) ((mask & MAY_EXEC) && S_ISREG(inode->i_mode))) { struct fuse_inode *fi = get_fuse_inode(inode); - if (fi->i_time < get_jiffies_64()) { + if (time_before64(fi->i_time, get_jiffies_64())) { refreshed = true; err = fuse_perm_getattr(inode, mask); diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 36f15f9c1de..40ac2628ddc 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -933,8 +933,7 @@ out: return err; } -static ssize_t fuse_file_aio_read(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +static ssize_t fuse_file_read_iter(struct kiocb *iocb, struct iov_iter *to) { struct inode *inode = iocb->ki_filp->f_mapping->host; struct fuse_conn *fc = get_fuse_conn(inode); @@ -945,14 +944,14 @@ static ssize_t fuse_file_aio_read(struct kiocb *iocb, const struct iovec *iov, * i_size is up to date). */ if (fc->auto_inval_data || - (pos + iov_length(iov, nr_segs) > i_size_read(inode))) { + (iocb->ki_pos + iov_iter_count(to) > i_size_read(inode))) { int err; err = fuse_update_attributes(inode, NULL, iocb->ki_filp, NULL); if (err) return err; } - return generic_file_aio_read(iocb, iov, nr_segs, pos); + return generic_file_read_iter(iocb, to); } static void fuse_write_fill(struct fuse_req *req, struct fuse_file *ff, @@ -1089,8 +1088,6 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req, tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes); flush_dcache_page(page); - mark_page_accessed(page); - if (!tmp) { unlock_page(page); page_cache_release(page); @@ -1183,19 +1180,17 @@ static ssize_t fuse_perform_write(struct file *file, return res > 0 ? res : err; } -static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, - unsigned long nr_segs, loff_t pos) +static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { struct file *file = iocb->ki_filp; struct address_space *mapping = file->f_mapping; - size_t count = 0; - size_t ocount = 0; + size_t count = iov_iter_count(from); ssize_t written = 0; ssize_t written_buffered = 0; struct inode *inode = mapping->host; ssize_t err; - struct iov_iter i; loff_t endbyte = 0; + loff_t pos = iocb->ki_pos; if (get_fuse_conn(inode)->writeback_cache) { /* Update size (EOF optimization) and mode (SUID clearing) */ @@ -1203,12 +1198,9 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, if (err) return err; - return generic_file_aio_write(iocb, iov, nr_segs, pos); + return generic_file_write_iter(iocb, from); } - WARN_ON(iocb->ki_pos != pos); - - count = ocount = iov_length(iov, nr_segs); mutex_lock(&inode->i_mutex); /* We can write back this queue in page reclaim */ @@ -1221,6 +1213,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, if (count == 0) goto out; + iov_iter_truncate(from, count); err = file_remove_suid(file); if (err) goto out; @@ -1230,14 +1223,13 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, goto out; if (file->f_flags & O_DIRECT) { - iov_iter_init(&i, iov, nr_segs, count, 0); - written = generic_file_direct_write(iocb, &i, pos, count, ocount); - if (written < 0 || written == count) + written = generic_file_direct_write(iocb, from, pos); + if (written < 0 || !iov_iter_count(from)) goto out; pos += written; - written_buffered = fuse_perform_write(file, mapping, &i, pos); + written_buffered = fuse_perform_write(file, mapping, from, pos); if (written_buffered < 0) { err = written_buffered; goto out; @@ -1256,8 +1248,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, written += written_buffered; iocb->ki_pos = pos + written_buffered; } else { - iov_iter_init(&i, iov, nr_segs, count, 0); - written = fuse_perform_write(file, mapping, &i, pos); + written = fuse_perform_write(file, mapping, from, pos); if (written >= 0) iocb->ki_pos = pos + written; } @@ -1295,7 +1286,7 @@ static int fuse_get_user_pages(struct fuse_req *req, struct iov_iter *ii, size_t nbytes = 0; /* # bytes already packed in req */ /* Special case for kernel I/O: can copy directly into the buffer */ - if (segment_eq(get_fs(), KERNEL_DS)) { + if (ii->type & ITER_KVEC) { unsigned long user_addr = fuse_get_user_addr(ii); size_t frag_size = fuse_get_frag_size(ii, *nbytesp); @@ -1311,35 +1302,26 @@ static int fuse_get_user_pages(struct fuse_req *req, struct iov_iter *ii, while (nbytes < *nbytesp && req->num_pages < req->max_pages) { unsigned npages; - unsigned long user_addr = fuse_get_user_addr(ii); - unsigned offset = user_addr & ~PAGE_MASK; - size_t frag_size = fuse_get_frag_size(ii, *nbytesp - nbytes); - int ret; - + size_t start; unsigned n = req->max_pages - req->num_pages; - frag_size = min_t(size_t, frag_size, n << PAGE_SHIFT); - - npages = (frag_size + offset + PAGE_SIZE - 1) >> PAGE_SHIFT; - npages = clamp(npages, 1U, n); - - ret = get_user_pages_fast(user_addr, npages, !write, - &req->pages[req->num_pages]); + ssize_t ret = iov_iter_get_pages(ii, + &req->pages[req->num_pages], + n * PAGE_SIZE, &start); if (ret < 0) return ret; - npages = ret; - frag_size = min_t(size_t, frag_size, - (npages << PAGE_SHIFT) - offset); - iov_iter_advance(ii, frag_size); + iov_iter_advance(ii, ret); + nbytes += ret; + + ret += start; + npages = (ret + PAGE_SIZE - 1) / PAGE_SIZE; - req->page_descs[req->num_pages].offset = offset; + req->page_descs[req->num_pages].offset = start; fuse_page_descs_length_init(req, req->num_pages, npages); req->num_pages += npages; req->page_descs[req->num_pages - 1].length -= - (npages << PAGE_SHIFT) - offset - frag_size; - - nbytes += frag_size; + (PAGE_SIZE - ret) & (PAGE_SIZE - 1); } if (write) @@ -1354,24 +1336,11 @@ static int fuse_get_user_pages(struct fuse_req *req, struct iov_iter *ii, static inline int fuse_iter_npages(const struct iov_iter *ii_p) { - struct iov_iter ii = *ii_p; - int npages = 0; - - while (iov_iter_count(&ii) && npages < FUSE_MAX_PAGES_PER_REQ) { - unsigned long user_addr = fuse_get_user_addr(&ii); - unsigned offset = user_addr & ~PAGE_MASK; - size_t frag_size = iov_iter_single_seg_count(&ii); - - npages += (frag_size + offset + PAGE_SIZE - 1) >> PAGE_SHIFT; - iov_iter_advance(&ii, frag_size); - } - - return min(npages, FUSE_MAX_PAGES_PER_REQ); + return iov_iter_npages(ii_p, FUSE_MAX_PAGES_PER_REQ); } -ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, - unsigned long nr_segs, size_t count, loff_t *ppos, - int flags) +ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter, + loff_t *ppos, int flags) { int write = flags & FUSE_DIO_WRITE; int cuse = flags & FUSE_DIO_CUSE; @@ -1381,18 +1350,16 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, struct fuse_conn *fc = ff->fc; size_t nmax = write ? fc->max_write : fc->max_read; loff_t pos = *ppos; + size_t count = iov_iter_count(iter); pgoff_t idx_from = pos >> PAGE_CACHE_SHIFT; pgoff_t idx_to = (pos + count - 1) >> PAGE_CACHE_SHIFT; ssize_t res = 0; struct fuse_req *req; - struct iov_iter ii; - - iov_iter_init(&ii, iov, nr_segs, count, 0); if (io->async) - req = fuse_get_req_for_background(fc, fuse_iter_npages(&ii)); + req = fuse_get_req_for_background(fc, fuse_iter_npages(iter)); else - req = fuse_get_req(fc, fuse_iter_npages(&ii)); + req = fuse_get_req(fc, fuse_iter_npages(iter)); if (IS_ERR(req)) return PTR_ERR(req); @@ -1408,7 +1375,7 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, size_t nres; fl_owner_t owner = current->files; size_t nbytes = min(count, nmax); - int err = fuse_get_user_pages(req, &ii, &nbytes, write); + int err = fuse_get_user_pages(req, iter, &nbytes, write); if (err) { res = err; break; @@ -1438,9 +1405,9 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, fuse_put_request(fc, req); if (io->async) req = fuse_get_req_for_background(fc, - fuse_iter_npages(&ii)); + fuse_iter_npages(iter)); else - req = fuse_get_req(fc, fuse_iter_npages(&ii)); + req = fuse_get_req(fc, fuse_iter_npages(iter)); if (IS_ERR(req)) break; } @@ -1455,9 +1422,8 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, EXPORT_SYMBOL_GPL(fuse_direct_io); static ssize_t __fuse_direct_read(struct fuse_io_priv *io, - const struct iovec *iov, - unsigned long nr_segs, loff_t *ppos, - size_t count) + struct iov_iter *iter, + loff_t *ppos) { ssize_t res; struct file *file = io->file; @@ -1466,7 +1432,7 @@ static ssize_t __fuse_direct_read(struct fuse_io_priv *io, if (is_bad_inode(inode)) return -EIO; - res = fuse_direct_io(io, iov, nr_segs, count, ppos, 0); + res = fuse_direct_io(io, iter, ppos, 0); fuse_invalidate_attr(inode); @@ -1478,22 +1444,26 @@ static ssize_t fuse_direct_read(struct file *file, char __user *buf, { struct fuse_io_priv io = { .async = 0, .file = file }; struct iovec iov = { .iov_base = buf, .iov_len = count }; - return __fuse_direct_read(&io, &iov, 1, ppos, count); + struct iov_iter ii; + iov_iter_init(&ii, READ, &iov, 1, count); + return __fuse_direct_read(&io, &ii, ppos); } static ssize_t __fuse_direct_write(struct fuse_io_priv *io, - const struct iovec *iov, - unsigned long nr_segs, loff_t *ppos) + struct iov_iter *iter, + loff_t *ppos) { struct file *file = io->file; struct inode *inode = file_inode(file); - size_t count = iov_length(iov, nr_segs); + size_t count = iov_iter_count(iter); ssize_t res; + res = generic_write_checks(file, ppos, &count, 0); - if (!res) - res = fuse_direct_io(io, iov, nr_segs, count, ppos, - FUSE_DIO_WRITE); + if (!res) { + iov_iter_truncate(iter, count); + res = fuse_direct_io(io, iter, ppos, FUSE_DIO_WRITE); + } fuse_invalidate_attr(inode); @@ -1507,13 +1477,15 @@ static ssize_t fuse_direct_write(struct file *file, const char __user *buf, struct inode *inode = file_inode(file); ssize_t res; struct fuse_io_priv io = { .async = 0, .file = file }; + struct iov_iter ii; + iov_iter_init(&ii, WRITE, &iov, 1, count); if (is_bad_inode(inode)) return -EIO; /* Don't allow parallel writes to the same file */ mutex_lock(&inode->i_mutex); - res = __fuse_direct_write(&io, &iov, 1, ppos); + res = __fuse_direct_write(&io, &ii, ppos); if (res > 0) fuse_write_update_size(inode, *ppos); mutex_unlock(&inode->i_mutex); @@ -1715,7 +1687,7 @@ static int fuse_writepage_locked(struct page *page) error = -EIO; req->ff = fuse_write_file_get(fc, fi); if (!req->ff) - goto err_free; + goto err_nofile; fuse_write_fill(req, req->ff, page_offset(page), 0); @@ -1743,6 +1715,8 @@ static int fuse_writepage_locked(struct page *page) return 0; +err_nofile: + __free_page(tmp_page); err_free: fuse_request_free(req); err: @@ -1983,8 +1957,8 @@ static int fuse_writepages(struct address_space *mapping, data.ff = NULL; err = -ENOMEM; - data.orig_pages = kzalloc(sizeof(struct page *) * - FUSE_MAX_PAGES_PER_REQ, + data.orig_pages = kcalloc(FUSE_MAX_PAGES_PER_REQ, + sizeof(struct page *), GFP_NOFS); if (!data.orig_pages) goto out; @@ -2297,7 +2271,6 @@ static int fuse_file_flock(struct file *file, int cmd, struct file_lock *fl) struct fuse_file *ff = file->private_data; /* emulate flock with POSIX locks */ - fl->fl_owner = (fl_owner_t) file; ff->flock = true; err = fuse_setlk(file, fl, 1); } @@ -2368,7 +2341,7 @@ static int fuse_ioctl_copy_user(struct page **pages, struct iovec *iov, if (!bytes) return 0; - iov_iter_init(&ii, iov, nr_segs, bytes, 0); + iov_iter_init(&ii, to_user ? READ : WRITE, iov, nr_segs, bytes); while (iov_iter_count(&ii)) { struct page *page = pages[page_idx++]; @@ -2915,6 +2888,7 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, if (offset >= i_size) return 0; count = min_t(loff_t, count, fuse_round_up(i_size - offset)); + iov_iter_truncate(iter, count); } io = kmalloc(sizeof(struct fuse_io_priv), GFP_KERNEL); @@ -2944,9 +2918,9 @@ fuse_direct_IO(int rw, struct kiocb *iocb, struct iov_iter *iter, io->async = false; if (rw == WRITE) - ret = __fuse_direct_write(io, iter->iov, iter->nr_segs, &pos); + ret = __fuse_direct_write(io, iter, &pos); else - ret = __fuse_direct_read(io, iter->iov, iter->nr_segs, &pos, count); + ret = __fuse_direct_read(io, iter, &pos); if (io->async) { fuse_aio_complete(io, ret < 0 ? ret : 0, -1); @@ -3057,10 +3031,10 @@ out: static const struct file_operations fuse_file_operations = { .llseek = fuse_file_llseek, - .read = do_sync_read, - .aio_read = fuse_file_aio_read, - .write = do_sync_write, - .aio_write = fuse_file_aio_write, + .read = new_sync_read, + .read_iter = fuse_file_read_iter, + .write = new_sync_write, + .write_iter = fuse_file_write_iter, .mmap = fuse_file_mmap, .open = fuse_open, .flush = fuse_flush, diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 7aa5c75e0de..e8e47a6ab51 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -880,9 +880,8 @@ int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file, /** CUSE pass fuse_direct_io() a file which f_mapping->host is not from FUSE */ #define FUSE_DIO_CUSE (1 << 1) -ssize_t fuse_direct_io(struct fuse_io_priv *io, const struct iovec *iov, - unsigned long nr_segs, size_t count, loff_t *ppos, - int flags); +ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter, + loff_t *ppos, int flags); long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg, unsigned int flags); long fuse_ioctl_common(struct file *file, unsigned int cmd, diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 754dcf23de8..03246cd9d47 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -478,6 +478,17 @@ static const match_table_t tokens = { {OPT_ERR, NULL} }; +static int fuse_match_uint(substring_t *s, unsigned int *res) +{ + int err = -ENOMEM; + char *buf = match_strdup(s); + if (buf) { + err = kstrtouint(buf, 10, res); + kfree(buf); + } + return err; +} + static int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev) { char *p; @@ -488,6 +499,7 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev) while ((p = strsep(&opt, ",")) != NULL) { int token; int value; + unsigned uv; substring_t args[MAX_OPT_ARGS]; if (!*p) continue; @@ -511,18 +523,18 @@ static int parse_fuse_opt(char *opt, struct fuse_mount_data *d, int is_bdev) break; case OPT_USER_ID: - if (match_int(&args[0], &value)) + if (fuse_match_uint(&args[0], &uv)) return 0; - d->user_id = make_kuid(current_user_ns(), value); + d->user_id = make_kuid(current_user_ns(), uv); if (!uid_valid(d->user_id)) return 0; d->user_id_present = 1; break; case OPT_GROUP_ID: - if (match_int(&args[0], &value)) + if (fuse_match_uint(&args[0], &uv)) return 0; - d->group_id = make_kgid(current_user_ns(), value); + d->group_id = make_kgid(current_user_ns(), uv); if (!gid_valid(d->group_id)) return 0; d->group_id_present = 1; @@ -895,9 +907,6 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_req *req) fc->writeback_cache = 1; if (arg->time_gran && arg->time_gran <= 1000000000) fc->sb->s_time_gran = arg->time_gran; - else - fc->sb->s_time_gran = 1000000000; - } else { ra_pages = fc->max_read / PAGE_CACHE_SIZE; fc->no_lock = 1; @@ -926,7 +935,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req) FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ | FUSE_FLOCK_LOCKS | FUSE_IOCTL_DIR | FUSE_AUTO_INVAL_DATA | FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO | - FUSE_WRITEBACK_CACHE; + FUSE_WRITEBACK_CACHE | FUSE_NO_OPEN_SUPPORT; req->in.h.opcode = FUSE_INIT; req->in.numargs = 1; req->in.args[0].size = sizeof(*arg); @@ -1006,7 +1015,7 @@ static int fuse_fill_super(struct super_block *sb, void *data, int silent) sb->s_flags &= ~(MS_NOSEC | MS_I_VERSION); - if (!parse_fuse_opt((char *) data, &d, is_bdev)) + if (!parse_fuse_opt(data, &d, is_bdev)) goto err; if (is_bdev) { |