diff options
Diffstat (limited to 'fs/nfs/nfs42proc.c')
-rw-r--r-- | fs/nfs/nfs42proc.c | 424 |
1 files changed, 388 insertions, 36 deletions
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c index e2ae54b35dfe..ecb428512fe1 100644 --- a/fs/nfs/nfs42proc.c +++ b/fs/nfs/nfs42proc.c @@ -17,6 +17,7 @@ #include "nfs4session.h" #include "internal.h" #include "delegation.h" +#include "nfs4trace.h" #define NFSDBG_FACILITY NFSDBG_PROC static int nfs42_do_offload_cancel_async(struct file *dst, nfs4_stateid *std); @@ -45,11 +46,12 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, { struct inode *inode = file_inode(filep); struct nfs_server *server = NFS_SERVER(inode); + u32 bitmask[NFS_BITMASK_SZ]; struct nfs42_falloc_args args = { .falloc_fh = NFS_FH(inode), .falloc_offset = offset, .falloc_length = len, - .falloc_bitmask = nfs4_fattr_bitmap, + .falloc_bitmask = bitmask, }; struct nfs42_falloc_res res = { .falloc_server = server, @@ -67,15 +69,28 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, return status; } + nfs4_bitmask_set(bitmask, server->cache_consistency_bitmask, inode, + NFS_INO_INVALID_BLOCKS); + res.falloc_fattr = nfs_alloc_fattr(); if (!res.falloc_fattr) return -ENOMEM; status = nfs4_call_sync(server->client, server, msg, &args.seq_args, &res.seq_res, 0); - if (status == 0) - status = nfs_post_op_update_inode(inode, res.falloc_fattr); - + if (status == 0) { + if (nfs_should_remove_suid(inode)) { + spin_lock(&inode->i_lock); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_MODE); + spin_unlock(&inode->i_lock); + } + status = nfs_post_op_update_inode_force_wcc(inode, + res.falloc_fattr); + } + if (msg->rpc_proc == &nfs4_procedures[NFSPROC4_CLNT_ALLOCATE]) + trace_nfs4_fallocate(inode, &args, status); + else + trace_nfs4_deallocate(inode, &args, status); kfree(res.falloc_fattr); return status; } @@ -83,7 +98,8 @@ static int _nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, loff_t offset, loff_t len) { - struct nfs_server *server = NFS_SERVER(file_inode(filep)); + struct inode *inode = file_inode(filep); + struct nfs_server *server = NFS_SERVER(inode); struct nfs4_exception exception = { }; struct nfs_lock_context *lock; int err; @@ -92,9 +108,13 @@ static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, if (IS_ERR(lock)) return PTR_ERR(lock); - exception.inode = file_inode(filep); + exception.inode = inode; exception.state = lock->open_context->state; + err = nfs_sync_inode(inode); + if (err) + goto out; + do { err = _nfs42_proc_fallocate(msg, filep, lock, offset, len); if (err == -ENOTSUPP) { @@ -103,7 +123,7 @@ static int nfs42_proc_fallocate(struct rpc_message *msg, struct file *filep, } err = nfs4_handle_exception(server, err, &exception); } while (exception.retry); - +out: nfs_put_lock_context(lock); return err; } @@ -141,16 +161,13 @@ int nfs42_proc_deallocate(struct file *filep, loff_t offset, loff_t len) return -EOPNOTSUPP; inode_lock(inode); - err = nfs_sync_inode(inode); - if (err) - goto out_unlock; err = nfs42_proc_fallocate(&msg, filep, offset, len); if (err == 0) truncate_pagecache_range(inode, offset, (offset + len) -1); if (err == -EOPNOTSUPP) NFS_SERVER(inode)->caps &= ~NFS_CAP_DEALLOCATE; -out_unlock: + inode_unlock(inode); return err; } @@ -163,28 +180,27 @@ static int handle_async_copy(struct nfs42_copy_res *res, nfs4_stateid *src_stateid, bool *restart) { - struct nfs4_copy_state *copy, *tmp_copy; + struct nfs4_copy_state *copy, *tmp_copy = NULL, *iter; int status = NFS4_OK; - bool found_pending = false; struct nfs_open_context *dst_ctx = nfs_file_open_context(dst); struct nfs_open_context *src_ctx = nfs_file_open_context(src); - copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_NOFS); + copy = kzalloc(sizeof(struct nfs4_copy_state), GFP_KERNEL); if (!copy) return -ENOMEM; spin_lock(&dst_server->nfs_client->cl_lock); - list_for_each_entry(tmp_copy, + list_for_each_entry(iter, &dst_server->nfs_client->pending_cb_stateids, copies) { - if (memcmp(&res->write_res.stateid, &tmp_copy->stateid, + if (memcmp(&res->write_res.stateid, &iter->stateid, NFS4_STATEID_SIZE)) continue; - found_pending = true; - list_del(&tmp_copy->copies); + tmp_copy = iter; + list_del(&iter->copies); break; } - if (found_pending) { + if (tmp_copy) { spin_unlock(&dst_server->nfs_client->cl_lock); kfree(copy); copy = tmp_copy; @@ -242,7 +258,7 @@ static int process_copy_commit(struct file *dst, loff_t pos_dst, struct nfs_commitres cres; int status = -ENOMEM; - cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS); + cres.verf = kzalloc(sizeof(struct nfs_writeverf), GFP_KERNEL); if (!cres.verf) goto out; @@ -260,6 +276,35 @@ out: return status; } +/** + * nfs42_copy_dest_done - perform inode cache updates after clone/copy offload + * @inode: pointer to destination inode + * @pos: destination offset + * @len: copy length + * + * Punch a hole in the inode page cache, so that the NFS client will + * know to retrieve new data. + * Update the file size if necessary, and then mark the inode as having + * invalid cached values for change attribute, ctime, mtime and space used. + */ +static void nfs42_copy_dest_done(struct inode *inode, loff_t pos, loff_t len) +{ + loff_t newsize = pos + len; + loff_t end = newsize - 1; + + WARN_ON_ONCE(invalidate_inode_pages2_range(inode->i_mapping, + pos >> PAGE_SHIFT, end >> PAGE_SHIFT)); + + spin_lock(&inode->i_lock); + if (newsize > i_size_read(inode)) + i_size_write(inode, newsize); + nfs_set_cache_invalid(inode, NFS_INO_INVALID_CHANGE | + NFS_INO_INVALID_CTIME | + NFS_INO_INVALID_MTIME | + NFS_INO_INVALID_BLOCKS); + spin_unlock(&inode->i_lock); +} + static ssize_t _nfs42_proc_copy(struct file *src, struct nfs_lock_context *src_lock, struct file *dst, @@ -296,7 +341,7 @@ static ssize_t _nfs42_proc_copy(struct file *src, return status; } } - status = nfs_filemap_write_and_wait_range(file_inode(src)->i_mapping, + status = nfs_filemap_write_and_wait_range(src->f_mapping, pos_src, pos_src + (loff_t)count - 1); if (status) return status; @@ -316,7 +361,7 @@ static ssize_t _nfs42_proc_copy(struct file *src, res->commit_res.verf = NULL; if (args->sync) { res->commit_res.verf = - kzalloc(sizeof(struct nfs_writeverf), GFP_NOFS); + kzalloc(sizeof(struct nfs_writeverf), GFP_KERNEL); if (!res->commit_res.verf) return -ENOMEM; } @@ -327,6 +372,7 @@ static ssize_t _nfs42_proc_copy(struct file *src, status = nfs4_call_sync(dst_server->client, dst_server, &msg, &args->seq_args, &res->seq_res, 0); + trace_nfs4_copy(src_inode, dst_inode, args, res, nss, status); if (status == -ENOTSUPP) dst_server->caps &= ~NFS_CAP_COPY; if (status) @@ -353,9 +399,8 @@ static ssize_t _nfs42_proc_copy(struct file *src, goto out; } - truncate_pagecache_range(dst_inode, pos_dst, - pos_dst + res->write_res.count); - + nfs42_copy_dest_done(dst_inode, pos_dst, res->write_res.count); + nfs_invalidate_atime(src_inode); status = res->write_res.count; out: if (args->sync) @@ -469,6 +514,7 @@ static void nfs42_offload_cancel_done(struct rpc_task *task, void *calldata) { struct nfs42_offloadcancel_data *data = calldata; + trace_nfs4_offload_cancel(&data->args, task->tk_status); nfs41_sequence_done(task, &data->res.osr_seq_res); if (task->tk_status && nfs4_async_handle_error(task, data->seq_server, NULL, @@ -510,7 +556,7 @@ static int nfs42_do_offload_cancel_async(struct file *dst, if (!(dst_server->caps & NFS_CAP_OFFLOAD_CANCEL)) return -EOPNOTSUPP; - data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_NOFS); + data = kzalloc(sizeof(struct nfs42_offloadcancel_data), GFP_KERNEL); if (data == NULL) return -ENOMEM; @@ -549,8 +595,10 @@ static int _nfs42_proc_copy_notify(struct file *src, struct file *dst, ctx = get_nfs_open_context(nfs_file_open_context(src)); l_ctx = nfs_get_lock_context(ctx); - if (IS_ERR(l_ctx)) - return PTR_ERR(l_ctx); + if (IS_ERR(l_ctx)) { + status = PTR_ERR(l_ctx); + goto out; + } status = nfs4_set_rw_stateid(&args->cna_src_stateid, ctx, l_ctx, FMODE_READ); @@ -558,14 +606,16 @@ static int _nfs42_proc_copy_notify(struct file *src, struct file *dst, if (status) { if (status == -EAGAIN) status = -NFS4ERR_BAD_STATEID; - return status; + goto out; } status = nfs4_call_sync(src_server->client, src_server, &msg, &args->cna_seq_args, &res->cnr_seq_res, 0); + trace_nfs4_copy_notify(file_inode(src), args, res, status); if (status == -ENOTSUPP) src_server->caps &= ~NFS_CAP_COPY_NOTIFY; +out: put_nfs_open_context(nfs_file_open_context(src)); return status; } @@ -583,7 +633,7 @@ int nfs42_proc_copy_notify(struct file *src, struct file *dst, if (!(src_server->caps & NFS_CAP_COPY_NOTIFY)) return -EOPNOTSUPP; - args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_NOFS); + args = kzalloc(sizeof(struct nfs42_copy_notify_args), GFP_KERNEL); if (args == NULL) return -ENOMEM; @@ -643,12 +693,16 @@ static loff_t _nfs42_proc_llseek(struct file *filep, status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, &res.seq_res, 0); + trace_nfs4_llseek(inode, &args, &res, status); if (status == -ENOTSUPP) server->caps &= ~NFS_CAP_SEEK; if (status) return status; - return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); + if (whence == SEEK_DATA && res.sr_eof) + return -NFS4ERR_NXIO; + else + return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes); } loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence) @@ -714,7 +768,7 @@ nfs42_layoutstat_done(struct rpc_task *task, void *calldata) switch (task->tk_status) { case 0: - break; + return; case -NFS4ERR_BADHANDLE: case -ESTALE: pnfs_destroy_layout(NFS_I(inode)); @@ -760,6 +814,8 @@ nfs42_layoutstat_done(struct rpc_task *task, void *calldata) case -EOPNOTSUPP: NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTSTATS; } + + trace_nfs4_layoutstats(inode, &data->args.stateid, task->tk_status); } static void @@ -882,7 +938,7 @@ nfs42_layouterror_done(struct rpc_task *task, void *calldata) switch (task->tk_status) { case 0: - break; + return; case -NFS4ERR_BADHANDLE: case -ESTALE: pnfs_destroy_layout(NFS_I(inode)); @@ -926,6 +982,9 @@ nfs42_layouterror_done(struct rpc_task *task, void *calldata) case -EOPNOTSUPP: NFS_SERVER(inode)->caps &= ~NFS_CAP_LAYOUTERROR; } + + trace_nfs4_layouterror(inode, &data->args.errors[0].stateid, + task->tk_status); } static void @@ -962,7 +1021,7 @@ int nfs42_proc_layouterror(struct pnfs_layout_segment *lseg, return -EOPNOTSUPP; if (n > NFS42_LAYOUTERROR_MAX) return -EINVAL; - data = nfs42_alloc_layouterror_data(lseg, GFP_NOFS); + data = nfs42_alloc_layouterror_data(lseg, nfs_io_gfp_mask()); if (!data) return -ENOMEM; for (i = 0; i < n; i++) { @@ -991,13 +1050,14 @@ static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, struct inode *src_inode = file_inode(src_f); struct inode *dst_inode = file_inode(dst_f); struct nfs_server *server = NFS_SERVER(dst_inode); + __u32 dst_bitmask[NFS_BITMASK_SZ]; struct nfs42_clone_args args = { .src_fh = NFS_FH(src_inode), .dst_fh = NFS_FH(dst_inode), .src_offset = src_offset, .dst_offset = dst_offset, .count = count, - .dst_bitmask = server->cache_consistency_bitmask, + .dst_bitmask = dst_bitmask, }; struct nfs42_clone_res res = { .server = server, @@ -1026,10 +1086,19 @@ static int _nfs42_proc_clone(struct rpc_message *msg, struct file *src_f, if (!res.dst_fattr) return -ENOMEM; + nfs4_bitmask_set(dst_bitmask, server->cache_consistency_bitmask, + dst_inode, NFS_INO_INVALID_BLOCKS); + status = nfs4_call_sync(server->client, server, msg, &args.seq_args, &res.seq_res, 0); - if (status == 0) + trace_nfs4_clone(src_inode, dst_inode, &args, status); + if (status == 0) { + /* a zero-length count means clone to EOF in src */ + if (count == 0 && res.dst_fattr->valid & NFS_ATTR_FATTR_SIZE) + count = nfs_size_to_loff_t(res.dst_fattr->size) - dst_offset; + nfs42_copy_dest_done(dst_inode, dst_offset, count); status = nfs_post_op_update_inode(dst_inode, res.dst_fattr); + } kfree(res.dst_fattr); return status; @@ -1088,3 +1157,286 @@ out_put_src_lock: nfs_put_lock_context(src_lock); return err; } + +#define NFS4XATTR_MAXPAGES DIV_ROUND_UP(XATTR_SIZE_MAX, PAGE_SIZE) + +static int _nfs42_proc_removexattr(struct inode *inode, const char *name) +{ + struct nfs_server *server = NFS_SERVER(inode); + struct nfs42_removexattrargs args = { + .fh = NFS_FH(inode), + .xattr_name = name, + }; + struct nfs42_removexattrres res; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_REMOVEXATTR], + .rpc_argp = &args, + .rpc_resp = &res, + }; + int ret; + unsigned long timestamp = jiffies; + + ret = nfs4_call_sync(server->client, server, &msg, &args.seq_args, + &res.seq_res, 1); + trace_nfs4_removexattr(inode, name, ret); + if (!ret) + nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0); + + return ret; +} + +static int _nfs42_proc_setxattr(struct inode *inode, const char *name, + const void *buf, size_t buflen, int flags) +{ + struct nfs_server *server = NFS_SERVER(inode); + struct page *pages[NFS4XATTR_MAXPAGES]; + struct nfs42_setxattrargs arg = { + .fh = NFS_FH(inode), + .xattr_pages = pages, + .xattr_len = buflen, + .xattr_name = name, + .xattr_flags = flags, + }; + struct nfs42_setxattrres res; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_SETXATTR], + .rpc_argp = &arg, + .rpc_resp = &res, + }; + int ret, np; + unsigned long timestamp = jiffies; + + if (buflen > server->sxasize) + return -ERANGE; + + if (buflen > 0) { + np = nfs4_buf_to_pages_noslab(buf, buflen, arg.xattr_pages); + if (np < 0) + return np; + } else + np = 0; + + ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, + &res.seq_res, 1); + trace_nfs4_setxattr(inode, name, ret); + + for (; np > 0; np--) + put_page(pages[np - 1]); + + if (!ret) + nfs4_update_changeattr(inode, &res.cinfo, timestamp, 0); + + return ret; +} + +static ssize_t _nfs42_proc_getxattr(struct inode *inode, const char *name, + void *buf, size_t buflen, struct page **pages, + size_t plen) +{ + struct nfs_server *server = NFS_SERVER(inode); + struct nfs42_getxattrargs arg = { + .fh = NFS_FH(inode), + .xattr_name = name, + }; + struct nfs42_getxattrres res; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETXATTR], + .rpc_argp = &arg, + .rpc_resp = &res, + }; + ssize_t ret; + + arg.xattr_len = plen; + arg.xattr_pages = pages; + + ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, + &res.seq_res, 0); + trace_nfs4_getxattr(inode, name, ret); + if (ret < 0) + return ret; + + /* + * Normally, the caching is done one layer up, but for successful + * RPCS, always cache the result here, even if the caller was + * just querying the length, or if the reply was too big for + * the caller. This avoids a second RPC in the case of the + * common query-alloc-retrieve cycle for xattrs. + * + * Note that xattr_len is always capped to XATTR_SIZE_MAX. + */ + + nfs4_xattr_cache_add(inode, name, NULL, pages, res.xattr_len); + + if (buflen) { + if (res.xattr_len > buflen) + return -ERANGE; + _copy_from_pages(buf, pages, 0, res.xattr_len); + } + + return res.xattr_len; +} + +static ssize_t _nfs42_proc_listxattrs(struct inode *inode, void *buf, + size_t buflen, u64 *cookiep, bool *eofp) +{ + struct nfs_server *server = NFS_SERVER(inode); + struct page **pages; + struct nfs42_listxattrsargs arg = { + .fh = NFS_FH(inode), + .cookie = *cookiep, + }; + struct nfs42_listxattrsres res = { + .eof = false, + .xattr_buf = buf, + .xattr_len = buflen, + }; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LISTXATTRS], + .rpc_argp = &arg, + .rpc_resp = &res, + }; + u32 xdrlen; + int ret, np, i; + + + ret = -ENOMEM; + res.scratch = alloc_page(GFP_KERNEL); + if (!res.scratch) + goto out; + + xdrlen = nfs42_listxattr_xdrsize(buflen); + if (xdrlen > server->lxasize) + xdrlen = server->lxasize; + np = xdrlen / PAGE_SIZE + 1; + + pages = kcalloc(np, sizeof(struct page *), GFP_KERNEL); + if (!pages) + goto out_free_scratch; + for (i = 0; i < np; i++) { + pages[i] = alloc_page(GFP_KERNEL); + if (!pages[i]) + goto out_free_pages; + } + + arg.xattr_pages = pages; + arg.count = xdrlen; + + ret = nfs4_call_sync(server->client, server, &msg, &arg.seq_args, + &res.seq_res, 0); + trace_nfs4_listxattr(inode, ret); + + if (ret >= 0) { + ret = res.copied; + *cookiep = res.cookie; + *eofp = res.eof; + } + +out_free_pages: + while (--np >= 0) { + if (pages[np]) + __free_page(pages[np]); + } + kfree(pages); +out_free_scratch: + __free_page(res.scratch); +out: + return ret; + +} + +ssize_t nfs42_proc_getxattr(struct inode *inode, const char *name, + void *buf, size_t buflen) +{ + struct nfs4_exception exception = { }; + ssize_t err, np, i; + struct page **pages; + + np = nfs_page_array_len(0, buflen ?: XATTR_SIZE_MAX); + pages = kmalloc_array(np, sizeof(*pages), GFP_KERNEL); + if (!pages) + return -ENOMEM; + + for (i = 0; i < np; i++) { + pages[i] = alloc_page(GFP_KERNEL); + if (!pages[i]) { + np = i + 1; + err = -ENOMEM; + goto out; + } + } + + /* + * The GETXATTR op has no length field in the call, and the + * xattr data is at the end of the reply. + * + * There is no downside in using the page-aligned length. It will + * allow receiving and caching xattrs that are too large for the + * caller but still fit in the page-rounded value. + */ + do { + err = _nfs42_proc_getxattr(inode, name, buf, buflen, + pages, np * PAGE_SIZE); + if (err >= 0) + break; + err = nfs4_handle_exception(NFS_SERVER(inode), err, + &exception); + } while (exception.retry); + +out: + while (--np >= 0) + __free_page(pages[np]); + kfree(pages); + + return err; +} + +int nfs42_proc_setxattr(struct inode *inode, const char *name, + const void *buf, size_t buflen, int flags) +{ + struct nfs4_exception exception = { }; + int err; + + do { + err = _nfs42_proc_setxattr(inode, name, buf, buflen, flags); + if (!err) + break; + err = nfs4_handle_exception(NFS_SERVER(inode), err, + &exception); + } while (exception.retry); + + return err; +} + +ssize_t nfs42_proc_listxattrs(struct inode *inode, void *buf, + size_t buflen, u64 *cookiep, bool *eofp) +{ + struct nfs4_exception exception = { }; + ssize_t err; + + do { + err = _nfs42_proc_listxattrs(inode, buf, buflen, + cookiep, eofp); + if (err >= 0) + break; + err = nfs4_handle_exception(NFS_SERVER(inode), err, + &exception); + } while (exception.retry); + + return err; +} + +int nfs42_proc_removexattr(struct inode *inode, const char *name) +{ + struct nfs4_exception exception = { }; + int err; + + do { + err = _nfs42_proc_removexattr(inode, name); + if (!err) + break; + err = nfs4_handle_exception(NFS_SERVER(inode), err, + &exception); + } while (exception.retry); + + return err; +} |