Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1 | /* |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 2 | * fs/f2fs/file.c |
| 3 | * |
| 4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. |
| 5 | * http://www.samsung.com/ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | #include <linux/fs.h> |
| 12 | #include <linux/f2fs_fs.h> |
| 13 | #include <linux/stat.h> |
| 14 | #include <linux/buffer_head.h> |
| 15 | #include <linux/writeback.h> |
Jaegeuk Kim | ae51fb3 | 2013-03-16 11:13:04 +0900 | [diff] [blame] | 16 | #include <linux/blkdev.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 17 | #include <linux/falloc.h> |
| 18 | #include <linux/types.h> |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 19 | #include <linux/compat.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 20 | #include <linux/uaccess.h> |
| 21 | #include <linux/mount.h> |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 22 | #include <linux/pagevec.h> |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 23 | #include <linux/random.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 24 | |
| 25 | #include "f2fs.h" |
| 26 | #include "node.h" |
| 27 | #include "segment.h" |
| 28 | #include "xattr.h" |
| 29 | #include "acl.h" |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 30 | #include "gc.h" |
Jaegeuk Kim | db9f7c1 | 2014-12-17 20:04:08 -0800 | [diff] [blame] | 31 | #include "trace.h" |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 32 | #include <trace/events/f2fs.h> |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 33 | |
| 34 | static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, |
| 35 | struct vm_fault *vmf) |
| 36 | { |
| 37 | struct page *page = vmf->page; |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 38 | struct inode *inode = file_inode(vma->vm_file); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 39 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 40 | struct dnode_of_data dn; |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 41 | int err; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 42 | |
| 43 | f2fs_balance_fs(sbi); |
| 44 | |
| 45 | sb_start_pagefault(inode->i_sb); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 46 | |
| 47 | f2fs_bug_on(sbi, f2fs_has_inline_data(inode)); |
Jaegeuk Kim | b067ba1 | 2014-08-07 16:32:25 -0700 | [diff] [blame] | 48 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 49 | /* block allocation */ |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 50 | f2fs_lock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 51 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Jaegeuk Kim | 9ba69cf | 2014-10-17 20:33:55 -0700 | [diff] [blame] | 52 | err = f2fs_reserve_block(&dn, page->index); |
| 53 | if (err) { |
| 54 | f2fs_unlock_op(sbi); |
| 55 | goto out; |
| 56 | } |
| 57 | f2fs_put_dnode(&dn); |
| 58 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 59 | |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 60 | file_update_time(vma->vm_file); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 61 | lock_page(page); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 62 | if (unlikely(page->mapping != inode->i_mapping || |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 63 | page_offset(page) > i_size_read(inode) || |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 64 | !PageUptodate(page))) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 65 | unlock_page(page); |
| 66 | err = -EFAULT; |
| 67 | goto out; |
| 68 | } |
| 69 | |
| 70 | /* |
| 71 | * check to see if the page is mapped already (no holes) |
| 72 | */ |
| 73 | if (PageMappedToDisk(page)) |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 74 | goto mapped; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 75 | |
| 76 | /* page is wholly or partially inside EOF */ |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 77 | if (((loff_t)(page->index + 1) << PAGE_CACHE_SHIFT) > |
| 78 | i_size_read(inode)) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 79 | unsigned offset; |
| 80 | offset = i_size_read(inode) & ~PAGE_CACHE_MASK; |
| 81 | zero_user_segment(page, offset, PAGE_CACHE_SIZE); |
| 82 | } |
| 83 | set_page_dirty(page); |
| 84 | SetPageUptodate(page); |
| 85 | |
Jaegeuk Kim | e943a10 | 2013-10-25 14:26:31 +0900 | [diff] [blame] | 86 | trace_f2fs_vm_page_mkwrite(page, DATA); |
Namjae Jeon | 9851e6e | 2013-04-28 09:04:18 +0900 | [diff] [blame] | 87 | mapped: |
| 88 | /* fill the page */ |
Jaegeuk Kim | 3cb5ad1 | 2014-03-18 13:29:07 +0900 | [diff] [blame] | 89 | f2fs_wait_on_page_writeback(page, DATA); |
Chao Yu | 5b33912 | 2015-07-13 17:43:19 +0800 | [diff] [blame] | 90 | /* if gced page is attached, don't write to cold segment */ |
| 91 | clear_cold_data(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 92 | out: |
| 93 | sb_end_pagefault(inode->i_sb); |
| 94 | return block_page_mkwrite_return(err); |
| 95 | } |
| 96 | |
| 97 | static const struct vm_operations_struct f2fs_file_vm_ops = { |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 98 | .fault = filemap_fault, |
Kirill A. Shutemov | f182036 | 2014-04-07 15:37:19 -0700 | [diff] [blame] | 99 | .map_pages = filemap_map_pages, |
Jaegeuk Kim | 692bb55 | 2013-01-17 18:37:41 +0900 | [diff] [blame] | 100 | .page_mkwrite = f2fs_vm_page_mkwrite, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 101 | }; |
| 102 | |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 103 | static int get_parent_ino(struct inode *inode, nid_t *pino) |
| 104 | { |
| 105 | struct dentry *dentry; |
| 106 | |
| 107 | inode = igrab(inode); |
| 108 | dentry = d_find_any_alias(inode); |
| 109 | iput(inode); |
| 110 | if (!dentry) |
| 111 | return 0; |
| 112 | |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 113 | if (update_dent_inode(inode, inode, &dentry->d_name)) { |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 114 | dput(dentry); |
| 115 | return 0; |
| 116 | } |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 117 | |
Jaegeuk Kim | f0947e5 | 2013-07-22 22:12:56 +0900 | [diff] [blame] | 118 | *pino = parent_ino(dentry); |
| 119 | dput(dentry); |
Jaegeuk Kim | 354a339 | 2013-06-14 08:52:35 +0900 | [diff] [blame] | 120 | return 1; |
| 121 | } |
| 122 | |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 123 | static inline bool need_do_checkpoint(struct inode *inode) |
| 124 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 125 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 126 | bool need_cp = false; |
| 127 | |
| 128 | if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) |
| 129 | need_cp = true; |
Jaegeuk Kim | e7d5545 | 2015-04-29 17:02:18 -0700 | [diff] [blame] | 130 | else if (file_enc_name(inode) && need_dentry_mark(sbi, inode->i_ino)) |
| 131 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 132 | else if (file_wrong_pino(inode)) |
| 133 | need_cp = true; |
| 134 | else if (!space_for_roll_forward(sbi)) |
| 135 | need_cp = true; |
| 136 | else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) |
| 137 | need_cp = true; |
| 138 | else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) |
| 139 | need_cp = true; |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 140 | else if (test_opt(sbi, FASTBOOT)) |
| 141 | need_cp = true; |
Jaegeuk Kim | a344b9f | 2014-11-05 20:05:53 -0800 | [diff] [blame] | 142 | else if (sbi->active_logs == 2) |
| 143 | need_cp = true; |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 144 | |
| 145 | return need_cp; |
| 146 | } |
| 147 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 148 | static bool need_inode_page_update(struct f2fs_sb_info *sbi, nid_t ino) |
| 149 | { |
| 150 | struct page *i = find_get_page(NODE_MAPPING(sbi), ino); |
| 151 | bool ret = false; |
| 152 | /* But we need to avoid that there are some inode updates */ |
| 153 | if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) |
| 154 | ret = true; |
| 155 | f2fs_put_page(i, 0); |
| 156 | return ret; |
| 157 | } |
| 158 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 159 | static void try_to_fix_pino(struct inode *inode) |
| 160 | { |
| 161 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 162 | nid_t pino; |
| 163 | |
| 164 | down_write(&fi->i_sem); |
| 165 | fi->xattr_ver = 0; |
| 166 | if (file_wrong_pino(inode) && inode->i_nlink == 1 && |
| 167 | get_parent_ino(inode, &pino)) { |
| 168 | fi->i_pino = pino; |
| 169 | file_got_pino(inode); |
| 170 | up_write(&fi->i_sem); |
| 171 | |
| 172 | mark_inode_dirty_sync(inode); |
| 173 | f2fs_write_inode(inode, NULL); |
| 174 | } else { |
| 175 | up_write(&fi->i_sem); |
| 176 | } |
| 177 | } |
| 178 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 179 | int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) |
| 180 | { |
| 181 | struct inode *inode = file->f_mapping->host; |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 182 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 183 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 184 | nid_t ino = inode->i_ino; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 185 | int ret = 0; |
| 186 | bool need_cp = false; |
| 187 | struct writeback_control wbc = { |
Jaegeuk Kim | c81bf1c | 2014-03-03 11:28:40 +0900 | [diff] [blame] | 188 | .sync_mode = WB_SYNC_ALL, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 189 | .nr_to_write = LONG_MAX, |
| 190 | .for_reclaim = 0, |
| 191 | }; |
| 192 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 193 | if (unlikely(f2fs_readonly(inode->i_sb))) |
Namjae Jeon | 1fa95b0 | 2012-12-01 10:56:01 +0900 | [diff] [blame] | 194 | return 0; |
| 195 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 196 | trace_f2fs_sync_file_enter(inode); |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 197 | |
| 198 | /* if fdatasync is triggered, let's do in-place-update */ |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 199 | if (get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) |
Jaegeuk Kim | ea1aa12 | 2014-07-24 19:11:43 -0700 | [diff] [blame] | 200 | set_inode_flag(fi, FI_NEED_IPU); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 201 | ret = filemap_write_and_wait_range(inode->i_mapping, start, end); |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 202 | clear_inode_flag(fi, FI_NEED_IPU); |
| 203 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 204 | if (ret) { |
| 205 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 206 | return ret; |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 207 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 208 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 209 | /* if the inode is dirty, let's recover all the time */ |
Jaegeuk Kim | 2286c02 | 2015-08-15 21:51:05 -0700 | [diff] [blame] | 210 | if (!datasync) { |
| 211 | f2fs_write_inode(inode, NULL); |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 212 | goto go_write; |
| 213 | } |
| 214 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 215 | /* |
| 216 | * if there is no written data, don't waste time to write recovery info. |
| 217 | */ |
| 218 | if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 219 | !exist_written_data(sbi, ino, APPEND_INO)) { |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 220 | |
Changman Lee | 9c7bb70 | 2014-12-08 15:29:40 +0900 | [diff] [blame] | 221 | /* it may call write_inode just prior to fsync */ |
| 222 | if (need_inode_page_update(sbi, ino)) |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 223 | goto go_write; |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 224 | |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 225 | if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || |
Jaegeuk Kim | 2403c15 | 2014-09-10 14:58:18 -0700 | [diff] [blame] | 226 | exist_written_data(sbi, ino, UPDATE_INO)) |
Jaegeuk Kim | 6d99ba41 | 2014-07-24 19:08:02 -0700 | [diff] [blame] | 227 | goto flush_out; |
| 228 | goto out; |
| 229 | } |
Jaegeuk Kim | 19c9c46 | 2014-09-10 15:04:03 -0700 | [diff] [blame] | 230 | go_write: |
Jaegeuk Kim | 7d82db8 | 2013-01-11 13:10:49 +0900 | [diff] [blame] | 231 | /* guarantee free sections for fsync */ |
| 232 | f2fs_balance_fs(sbi); |
| 233 | |
Jaegeuk Kim | e5d2385 | 2013-07-03 10:55:52 +0900 | [diff] [blame] | 234 | /* |
| 235 | * Both of fdatasync() and fsync() are able to be recovered from |
| 236 | * sudden-power-off. |
| 237 | */ |
Chao Yu | 9d1589e | 2014-08-20 18:37:35 +0800 | [diff] [blame] | 238 | down_read(&fi->i_sem); |
| 239 | need_cp = need_do_checkpoint(inode); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 240 | up_read(&fi->i_sem); |
| 241 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 242 | if (need_cp) { |
| 243 | /* all the dirty node pages should be flushed for POR */ |
| 244 | ret = f2fs_sync_fs(inode->i_sb, 1); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 245 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 246 | /* |
| 247 | * We've secured consistency through sync_fs. Following pino |
| 248 | * will be used only for fsynced inodes after checkpoint. |
| 249 | */ |
| 250 | try_to_fix_pino(inode); |
Jaegeuk Kim | cff2852 | 2015-03-02 10:48:56 -0800 | [diff] [blame] | 251 | clear_inode_flag(fi, FI_APPEND_WRITE); |
| 252 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 253 | goto out; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 254 | } |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 255 | sync_nodes: |
| 256 | sync_node_pages(sbi, ino, &wbc); |
| 257 | |
Jaegeuk Kim | 871f599 | 2015-01-09 16:27:17 -0800 | [diff] [blame] | 258 | /* if cp_error was enabled, we should avoid infinite loop */ |
| 259 | if (unlikely(f2fs_cp_error(sbi))) |
| 260 | goto out; |
| 261 | |
Changman Lee | 51455b1 | 2014-12-08 15:29:41 +0900 | [diff] [blame] | 262 | if (need_inode_block_update(sbi, ino)) { |
| 263 | mark_inode_dirty_sync(inode); |
| 264 | f2fs_write_inode(inode, NULL); |
| 265 | goto sync_nodes; |
| 266 | } |
| 267 | |
| 268 | ret = wait_on_node_pages_writeback(sbi, ino); |
| 269 | if (ret) |
| 270 | goto out; |
| 271 | |
| 272 | /* once recovery info is written, don't need to tack this */ |
| 273 | remove_dirty_inode(sbi, ino, APPEND_INO); |
| 274 | clear_inode_flag(fi, FI_APPEND_WRITE); |
| 275 | flush_out: |
| 276 | remove_dirty_inode(sbi, ino, UPDATE_INO); |
| 277 | clear_inode_flag(fi, FI_UPDATE_WRITE); |
| 278 | ret = f2fs_issue_flush(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 279 | out: |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 280 | trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 281 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 282 | return ret; |
| 283 | } |
| 284 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 285 | static pgoff_t __get_first_dirty_index(struct address_space *mapping, |
| 286 | pgoff_t pgofs, int whence) |
| 287 | { |
| 288 | struct pagevec pvec; |
| 289 | int nr_pages; |
| 290 | |
| 291 | if (whence != SEEK_DATA) |
| 292 | return 0; |
| 293 | |
| 294 | /* find first dirty page index */ |
| 295 | pagevec_init(&pvec, 0); |
Jaegeuk Kim | 65b85cc | 2014-07-30 17:25:54 -0700 | [diff] [blame] | 296 | nr_pages = pagevec_lookup_tag(&pvec, mapping, &pgofs, |
| 297 | PAGECACHE_TAG_DIRTY, 1); |
| 298 | pgofs = nr_pages ? pvec.pages[0]->index : LONG_MAX; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 299 | pagevec_release(&pvec); |
| 300 | return pgofs; |
| 301 | } |
| 302 | |
| 303 | static bool __found_offset(block_t blkaddr, pgoff_t dirty, pgoff_t pgofs, |
| 304 | int whence) |
| 305 | { |
| 306 | switch (whence) { |
| 307 | case SEEK_DATA: |
| 308 | if ((blkaddr == NEW_ADDR && dirty == pgofs) || |
| 309 | (blkaddr != NEW_ADDR && blkaddr != NULL_ADDR)) |
| 310 | return true; |
| 311 | break; |
| 312 | case SEEK_HOLE: |
| 313 | if (blkaddr == NULL_ADDR) |
| 314 | return true; |
| 315 | break; |
| 316 | } |
| 317 | return false; |
| 318 | } |
| 319 | |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 320 | static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) |
| 321 | { |
| 322 | struct inode *inode = file->f_mapping->host; |
| 323 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 324 | struct dnode_of_data dn; |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 325 | pgoff_t pgofs, end_offset, dirty; |
| 326 | loff_t data_ofs = offset; |
| 327 | loff_t isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 328 | int err = 0; |
| 329 | |
| 330 | mutex_lock(&inode->i_mutex); |
| 331 | |
| 332 | isize = i_size_read(inode); |
| 333 | if (offset >= isize) |
| 334 | goto fail; |
| 335 | |
| 336 | /* handle inline data case */ |
Chao Yu | 622f28a | 2014-09-24 18:19:10 +0800 | [diff] [blame] | 337 | if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 338 | if (whence == SEEK_HOLE) |
| 339 | data_ofs = isize; |
| 340 | goto found; |
| 341 | } |
| 342 | |
| 343 | pgofs = (pgoff_t)(offset >> PAGE_CACHE_SHIFT); |
| 344 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 345 | dirty = __get_first_dirty_index(inode->i_mapping, pgofs, whence); |
| 346 | |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 347 | for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 348 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 349 | err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); |
| 350 | if (err && err != -ENOENT) { |
| 351 | goto fail; |
| 352 | } else if (err == -ENOENT) { |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 353 | /* direct node does not exists */ |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 354 | if (whence == SEEK_DATA) { |
| 355 | pgofs = PGOFS_OF_NEXT_DNODE(pgofs, |
| 356 | F2FS_I(inode)); |
| 357 | continue; |
| 358 | } else { |
| 359 | goto found; |
| 360 | } |
| 361 | } |
| 362 | |
Chao Yu | 6b2920a | 2014-07-07 11:21:59 +0800 | [diff] [blame] | 363 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 364 | |
| 365 | /* find data/hole in dnode block */ |
| 366 | for (; dn.ofs_in_node < end_offset; |
| 367 | dn.ofs_in_node++, pgofs++, |
Chao Yu | 2e02317 | 2015-02-09 11:23:58 +0800 | [diff] [blame] | 368 | data_ofs = (loff_t)pgofs << PAGE_CACHE_SHIFT) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 369 | block_t blkaddr; |
| 370 | blkaddr = datablock_addr(dn.node_page, dn.ofs_in_node); |
| 371 | |
Jaegeuk Kim | 7f7670f | 2014-04-28 18:12:36 +0900 | [diff] [blame] | 372 | if (__found_offset(blkaddr, dirty, pgofs, whence)) { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 373 | f2fs_put_dnode(&dn); |
| 374 | goto found; |
| 375 | } |
| 376 | } |
| 377 | f2fs_put_dnode(&dn); |
| 378 | } |
| 379 | |
| 380 | if (whence == SEEK_DATA) |
| 381 | goto fail; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 382 | found: |
Jaegeuk Kim | fe369bc | 2014-04-28 17:02:48 +0900 | [diff] [blame] | 383 | if (whence == SEEK_HOLE && data_ofs > isize) |
| 384 | data_ofs = isize; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 385 | mutex_unlock(&inode->i_mutex); |
| 386 | return vfs_setpos(file, data_ofs, maxbytes); |
| 387 | fail: |
| 388 | mutex_unlock(&inode->i_mutex); |
| 389 | return -ENXIO; |
| 390 | } |
| 391 | |
| 392 | static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) |
| 393 | { |
| 394 | struct inode *inode = file->f_mapping->host; |
| 395 | loff_t maxbytes = inode->i_sb->s_maxbytes; |
| 396 | |
| 397 | switch (whence) { |
| 398 | case SEEK_SET: |
| 399 | case SEEK_CUR: |
| 400 | case SEEK_END: |
| 401 | return generic_file_llseek_size(file, offset, whence, |
| 402 | maxbytes, i_size_read(inode)); |
| 403 | case SEEK_DATA: |
| 404 | case SEEK_HOLE: |
Jaegeuk Kim | 0b4c5afde | 2014-09-08 10:59:43 -0700 | [diff] [blame] | 405 | if (offset < 0) |
| 406 | return -ENXIO; |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 407 | return f2fs_seek_block(file, offset, whence); |
| 408 | } |
| 409 | |
| 410 | return -EINVAL; |
| 411 | } |
| 412 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 413 | static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) |
| 414 | { |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 415 | struct inode *inode = file_inode(file); |
| 416 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 417 | if (f2fs_encrypted_inode(inode)) { |
| 418 | int err = f2fs_get_encryption_info(inode); |
| 419 | if (err) |
| 420 | return 0; |
| 421 | } |
| 422 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 423 | /* we don't need to use inline_data strictly */ |
| 424 | if (f2fs_has_inline_data(inode)) { |
| 425 | int err = f2fs_convert_inline_inode(inode); |
| 426 | if (err) |
| 427 | return err; |
| 428 | } |
| 429 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 430 | file_accessed(file); |
| 431 | vma->vm_ops = &f2fs_file_vm_ops; |
| 432 | return 0; |
| 433 | } |
| 434 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 435 | static int f2fs_file_open(struct inode *inode, struct file *filp) |
| 436 | { |
| 437 | int ret = generic_file_open(inode, filp); |
| 438 | |
| 439 | if (!ret && f2fs_encrypted_inode(inode)) { |
| 440 | ret = f2fs_get_encryption_info(inode); |
| 441 | if (ret) |
| 442 | ret = -EACCES; |
| 443 | } |
| 444 | return ret; |
| 445 | } |
| 446 | |
Jaegeuk Kim | b292dcab | 2013-05-22 08:02:02 +0900 | [diff] [blame] | 447 | int truncate_data_blocks_range(struct dnode_of_data *dn, int count) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 448 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 449 | struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 450 | struct f2fs_node *raw_node; |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 451 | int nr_free = 0, ofs = dn->ofs_in_node, len = count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 452 | __le32 *addr; |
| 453 | |
Gu Zheng | 4559071 | 2013-07-15 17:57:38 +0800 | [diff] [blame] | 454 | raw_node = F2FS_NODE(dn->node_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 455 | addr = blkaddr_in_node(raw_node) + ofs; |
| 456 | |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 457 | for (; count > 0; count--, addr++, dn->ofs_in_node++) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 458 | block_t blkaddr = le32_to_cpu(*addr); |
| 459 | if (blkaddr == NULL_ADDR) |
| 460 | continue; |
| 461 | |
Jaegeuk Kim | e1509cf | 2014-12-30 22:57:55 -0800 | [diff] [blame] | 462 | dn->data_blkaddr = NULL_ADDR; |
Chao Yu | 216a620 | 2015-03-19 19:23:32 +0800 | [diff] [blame] | 463 | set_data_blkaddr(dn); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 464 | invalidate_blocks(sbi, blkaddr); |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 465 | if (dn->ofs_in_node == 0 && IS_INODE(dn->node_page)) |
| 466 | clear_inode_flag(F2FS_I(dn->inode), |
| 467 | FI_FIRST_BLOCK_WRITTEN); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 468 | nr_free++; |
| 469 | } |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 470 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 471 | if (nr_free) { |
Chao Yu | 19b2c30 | 2015-08-26 20:34:48 +0800 | [diff] [blame] | 472 | pgoff_t fofs; |
| 473 | /* |
| 474 | * once we invalidate valid blkaddr in range [ofs, ofs + count], |
| 475 | * we will invalidate all blkaddr in the whole range. |
| 476 | */ |
| 477 | fofs = start_bidx_of_node(ofs_of_node(dn->node_page), |
| 478 | F2FS_I(dn->inode)) + ofs; |
| 479 | f2fs_update_extent_cache_range(dn, fofs, 0, len); |
Namjae Jeon | d7cc950 | 2013-06-08 21:25:40 +0900 | [diff] [blame] | 480 | dec_valid_block_count(sbi, dn->inode, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 481 | set_page_dirty(dn->node_page); |
| 482 | sync_inode_page(dn); |
| 483 | } |
| 484 | dn->ofs_in_node = ofs; |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 485 | |
| 486 | trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid, |
| 487 | dn->ofs_in_node, nr_free); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 488 | return nr_free; |
| 489 | } |
| 490 | |
| 491 | void truncate_data_blocks(struct dnode_of_data *dn) |
| 492 | { |
| 493 | truncate_data_blocks_range(dn, ADDRS_PER_BLOCK); |
| 494 | } |
| 495 | |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 496 | static int truncate_partial_data_page(struct inode *inode, u64 from, |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 497 | bool cache_only) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 498 | { |
| 499 | unsigned offset = from & (PAGE_CACHE_SIZE - 1); |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 500 | pgoff_t index = from >> PAGE_CACHE_SHIFT; |
| 501 | struct address_space *mapping = inode->i_mapping; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 502 | struct page *page; |
| 503 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 504 | if (!offset && !cache_only) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 505 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 506 | |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 507 | if (cache_only) { |
| 508 | page = grab_cache_page(mapping, index); |
| 509 | if (page && PageUptodate(page)) |
| 510 | goto truncate_out; |
| 511 | f2fs_put_page(page, 1); |
| 512 | return 0; |
| 513 | } |
| 514 | |
| 515 | page = get_lock_data_page(inode, index); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 516 | if (IS_ERR(page)) |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 517 | return 0; |
Jaegeuk Kim | 43f3eae | 2015-04-30 17:00:33 -0700 | [diff] [blame] | 518 | truncate_out: |
Jaegeuk Kim | 3cb5ad1 | 2014-03-18 13:29:07 +0900 | [diff] [blame] | 519 | f2fs_wait_on_page_writeback(page, DATA); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 520 | zero_user(page, offset, PAGE_CACHE_SIZE - offset); |
Jaegeuk Kim | 4375a33 | 2015-04-23 12:04:33 -0700 | [diff] [blame] | 521 | if (!cache_only || !f2fs_encrypted_inode(inode) || !S_ISREG(inode->i_mode)) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 522 | set_page_dirty(page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 523 | f2fs_put_page(page, 1); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 524 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 525 | } |
| 526 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 527 | int truncate_blocks(struct inode *inode, u64 from, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 528 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 529 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 530 | unsigned int blocksize = inode->i_sb->s_blocksize; |
| 531 | struct dnode_of_data dn; |
| 532 | pgoff_t free_from; |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 533 | int count = 0, err = 0; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 534 | struct page *ipage; |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 535 | bool truncate_page = false; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 536 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 537 | trace_f2fs_truncate_blocks_enter(inode, from); |
| 538 | |
Jaegeuk Kim | f7ef9b8 | 2015-02-09 12:02:44 -0800 | [diff] [blame] | 539 | free_from = (pgoff_t)F2FS_BYTES_TO_BLK(from + blocksize - 1); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 540 | |
Jaegeuk Kim | 764aa3e | 2014-08-14 16:32:54 -0700 | [diff] [blame] | 541 | if (lock) |
| 542 | f2fs_lock_op(sbi); |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 543 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 544 | ipage = get_node_page(sbi, inode->i_ino); |
| 545 | if (IS_ERR(ipage)) { |
| 546 | err = PTR_ERR(ipage); |
| 547 | goto out; |
| 548 | } |
| 549 | |
| 550 | if (f2fs_has_inline_data(inode)) { |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 551 | if (truncate_inline_inode(ipage, from)) |
| 552 | set_page_dirty(ipage); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 553 | f2fs_put_page(ipage, 1); |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 554 | truncate_page = true; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 555 | goto out; |
| 556 | } |
| 557 | |
| 558 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
Jaegeuk Kim | 266e97a | 2013-02-26 13:10:46 +0900 | [diff] [blame] | 559 | err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 560 | if (err) { |
| 561 | if (err == -ENOENT) |
| 562 | goto free_next; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 563 | goto out; |
Jaegeuk Kim | 1ce86bf | 2014-10-15 10:24:34 -0700 | [diff] [blame] | 564 | } |
| 565 | |
Chao Yu | 6403eb1 | 2014-04-26 19:59:52 +0800 | [diff] [blame] | 566 | count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 567 | |
| 568 | count -= dn.ofs_in_node; |
Jaegeuk Kim | 9850cf4 | 2014-09-02 15:52:58 -0700 | [diff] [blame] | 569 | f2fs_bug_on(sbi, count < 0); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 570 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 571 | if (dn.ofs_in_node || IS_INODE(dn.node_page)) { |
| 572 | truncate_data_blocks_range(&dn, count); |
| 573 | free_from += count; |
| 574 | } |
| 575 | |
| 576 | f2fs_put_dnode(&dn); |
| 577 | free_next: |
| 578 | err = truncate_inode_blocks(inode, free_from); |
Jaegeuk Kim | 764d2c8 | 2014-11-11 11:01:01 -0800 | [diff] [blame] | 579 | out: |
| 580 | if (lock) |
| 581 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 582 | |
| 583 | /* lastly zero out the first data page */ |
| 584 | if (!err) |
Chao Yu | 0bfcfcc | 2015-03-10 13:16:25 +0800 | [diff] [blame] | 585 | err = truncate_partial_data_page(inode, from, truncate_page); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 586 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 587 | trace_f2fs_truncate_blocks_exit(inode, err); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 588 | return err; |
| 589 | } |
| 590 | |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 591 | int f2fs_truncate(struct inode *inode, bool lock) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 592 | { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 593 | int err; |
| 594 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 595 | if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || |
| 596 | S_ISLNK(inode->i_mode))) |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 597 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 598 | |
Namjae Jeon | 51dd624 | 2013-04-20 01:28:52 +0900 | [diff] [blame] | 599 | trace_f2fs_truncate(inode); |
| 600 | |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 601 | /* we should check inline_data size */ |
Jaegeuk Kim | 01b960e | 2015-04-23 10:27:21 -0700 | [diff] [blame] | 602 | if (f2fs_has_inline_data(inode) && !f2fs_may_inline_data(inode)) { |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 603 | err = f2fs_convert_inline_inode(inode); |
| 604 | if (err) |
| 605 | return err; |
Jaegeuk Kim | 92dffd0 | 2014-11-11 14:10:01 -0800 | [diff] [blame] | 606 | } |
| 607 | |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 608 | err = truncate_blocks(inode, i_size_read(inode), lock); |
| 609 | if (err) |
| 610 | return err; |
| 611 | |
| 612 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 613 | mark_inode_dirty(inode); |
| 614 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 615 | } |
| 616 | |
Jaegeuk Kim | 2d4d9fb5 | 2013-06-07 16:33:07 +0900 | [diff] [blame] | 617 | int f2fs_getattr(struct vfsmount *mnt, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 618 | struct dentry *dentry, struct kstat *stat) |
| 619 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 620 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 621 | generic_fillattr(inode, stat); |
| 622 | stat->blocks <<= 3; |
| 623 | return 0; |
| 624 | } |
| 625 | |
| 626 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 627 | static void __setattr_copy(struct inode *inode, const struct iattr *attr) |
| 628 | { |
| 629 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 630 | unsigned int ia_valid = attr->ia_valid; |
| 631 | |
| 632 | if (ia_valid & ATTR_UID) |
| 633 | inode->i_uid = attr->ia_uid; |
| 634 | if (ia_valid & ATTR_GID) |
| 635 | inode->i_gid = attr->ia_gid; |
| 636 | if (ia_valid & ATTR_ATIME) |
| 637 | inode->i_atime = timespec_trunc(attr->ia_atime, |
| 638 | inode->i_sb->s_time_gran); |
| 639 | if (ia_valid & ATTR_MTIME) |
| 640 | inode->i_mtime = timespec_trunc(attr->ia_mtime, |
| 641 | inode->i_sb->s_time_gran); |
| 642 | if (ia_valid & ATTR_CTIME) |
| 643 | inode->i_ctime = timespec_trunc(attr->ia_ctime, |
| 644 | inode->i_sb->s_time_gran); |
| 645 | if (ia_valid & ATTR_MODE) { |
| 646 | umode_t mode = attr->ia_mode; |
| 647 | |
| 648 | if (!in_group_p(inode->i_gid) && !capable(CAP_FSETID)) |
| 649 | mode &= ~S_ISGID; |
| 650 | set_acl_inode(fi, mode); |
| 651 | } |
| 652 | } |
| 653 | #else |
| 654 | #define __setattr_copy setattr_copy |
| 655 | #endif |
| 656 | |
| 657 | int f2fs_setattr(struct dentry *dentry, struct iattr *attr) |
| 658 | { |
David Howells | 2b0143b | 2015-03-17 22:25:59 +0000 | [diff] [blame] | 659 | struct inode *inode = d_inode(dentry); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 660 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 661 | int err; |
| 662 | |
| 663 | err = inode_change_ok(inode, attr); |
| 664 | if (err) |
| 665 | return err; |
| 666 | |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 667 | if (attr->ia_valid & ATTR_SIZE) { |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 668 | if (f2fs_encrypted_inode(inode) && |
| 669 | f2fs_get_encryption_info(inode)) |
| 670 | return -EACCES; |
| 671 | |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 672 | if (attr->ia_size <= i_size_read(inode)) { |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 673 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | b015489 | 2015-08-24 17:39:42 +0800 | [diff] [blame] | 674 | err = f2fs_truncate(inode, true); |
| 675 | if (err) |
| 676 | return err; |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 677 | f2fs_balance_fs(F2FS_I_SB(inode)); |
| 678 | } else { |
| 679 | /* |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 680 | * do not trim all blocks after i_size if target size is |
| 681 | * larger than i_size. |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 682 | */ |
Chao Yu | 3c45414 | 2015-06-05 18:34:02 +0800 | [diff] [blame] | 683 | truncate_setsize(inode, attr->ia_size); |
Chao Yu | 345a6b2 | 2015-09-28 17:46:01 +0800 | [diff] [blame] | 684 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
Chao Yu | 09db6a2 | 2014-09-15 18:02:09 +0800 | [diff] [blame] | 685 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | __setattr_copy(inode, attr); |
| 689 | |
| 690 | if (attr->ia_valid & ATTR_MODE) { |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 691 | err = posix_acl_chmod(inode, get_inode_mode(inode)); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 692 | if (err || is_inode_flag_set(fi, FI_ACL_MODE)) { |
| 693 | inode->i_mode = fi->i_acl_mode; |
| 694 | clear_inode_flag(fi, FI_ACL_MODE); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | mark_inode_dirty(inode); |
| 699 | return err; |
| 700 | } |
| 701 | |
| 702 | const struct inode_operations f2fs_file_inode_operations = { |
| 703 | .getattr = f2fs_getattr, |
| 704 | .setattr = f2fs_setattr, |
| 705 | .get_acl = f2fs_get_acl, |
Christoph Hellwig | a6dda0e | 2013-12-20 05:16:45 -0800 | [diff] [blame] | 706 | .set_acl = f2fs_set_acl, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 707 | #ifdef CONFIG_F2FS_FS_XATTR |
| 708 | .setxattr = generic_setxattr, |
| 709 | .getxattr = generic_getxattr, |
| 710 | .listxattr = f2fs_listxattr, |
| 711 | .removexattr = generic_removexattr, |
| 712 | #endif |
Jaegeuk Kim | 9ab7013 | 2014-06-08 04:30:14 +0900 | [diff] [blame] | 713 | .fiemap = f2fs_fiemap, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 714 | }; |
| 715 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 716 | static int fill_zero(struct inode *inode, pgoff_t index, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 717 | loff_t start, loff_t len) |
| 718 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 719 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 720 | struct page *page; |
| 721 | |
| 722 | if (!len) |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 723 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 724 | |
Jaegeuk Kim | bd43df0 | 2013-01-25 18:33:41 +0900 | [diff] [blame] | 725 | f2fs_balance_fs(sbi); |
| 726 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 727 | f2fs_lock_op(sbi); |
Jaegeuk Kim | 64aa7ed | 2013-05-20 09:55:50 +0900 | [diff] [blame] | 728 | page = get_new_data_page(inode, NULL, index, false); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 729 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 730 | |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 731 | if (IS_ERR(page)) |
| 732 | return PTR_ERR(page); |
| 733 | |
| 734 | f2fs_wait_on_page_writeback(page, DATA); |
| 735 | zero_user(page, start, len); |
| 736 | set_page_dirty(page); |
| 737 | f2fs_put_page(page, 1); |
| 738 | return 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 739 | } |
| 740 | |
| 741 | int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end) |
| 742 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 743 | int err; |
| 744 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 745 | while (pg_start < pg_end) { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 746 | struct dnode_of_data dn; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 747 | pgoff_t end_offset, count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 748 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 749 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 750 | err = get_dnode_of_data(&dn, pg_start, LOOKUP_NODE); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 751 | if (err) { |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 752 | if (err == -ENOENT) { |
| 753 | pg_start++; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 754 | continue; |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 755 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 756 | return err; |
| 757 | } |
| 758 | |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 759 | end_offset = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); |
| 760 | count = min(end_offset - dn.ofs_in_node, pg_end - pg_start); |
| 761 | |
| 762 | f2fs_bug_on(F2FS_I_SB(inode), count == 0 || count > end_offset); |
| 763 | |
| 764 | truncate_data_blocks_range(&dn, count); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 765 | f2fs_put_dnode(&dn); |
Chao Yu | ea58711 | 2015-09-17 20:22:44 +0800 | [diff] [blame] | 766 | |
| 767 | pg_start += count; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 768 | } |
| 769 | return 0; |
| 770 | } |
| 771 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 772 | static int punch_hole(struct inode *inode, loff_t offset, loff_t len) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 773 | { |
| 774 | pgoff_t pg_start, pg_end; |
| 775 | loff_t off_start, off_end; |
| 776 | int ret = 0; |
| 777 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 778 | if (f2fs_has_inline_data(inode)) { |
| 779 | ret = f2fs_convert_inline_inode(inode); |
| 780 | if (ret) |
| 781 | return ret; |
| 782 | } |
Huajun Li | 9ffe0fb | 2013-11-10 23:13:20 +0800 | [diff] [blame] | 783 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 784 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
| 785 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; |
| 786 | |
| 787 | off_start = offset & (PAGE_CACHE_SIZE - 1); |
| 788 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); |
| 789 | |
| 790 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 791 | ret = fill_zero(inode, pg_start, off_start, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 792 | off_end - off_start); |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 793 | if (ret) |
| 794 | return ret; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 795 | } else { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 796 | if (off_start) { |
| 797 | ret = fill_zero(inode, pg_start++, off_start, |
| 798 | PAGE_CACHE_SIZE - off_start); |
| 799 | if (ret) |
| 800 | return ret; |
| 801 | } |
| 802 | if (off_end) { |
| 803 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 804 | if (ret) |
| 805 | return ret; |
| 806 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 807 | |
| 808 | if (pg_start < pg_end) { |
| 809 | struct address_space *mapping = inode->i_mapping; |
| 810 | loff_t blk_start, blk_end; |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 811 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jason Hrycay | 1127a3d | 2013-04-08 20:16:44 -0500 | [diff] [blame] | 812 | |
| 813 | f2fs_balance_fs(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 814 | |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 815 | blk_start = (loff_t)pg_start << PAGE_CACHE_SHIFT; |
| 816 | blk_end = (loff_t)pg_end << PAGE_CACHE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 817 | truncate_inode_pages_range(mapping, blk_start, |
| 818 | blk_end - 1); |
Jaegeuk Kim | 3993683 | 2012-11-22 16:21:29 +0900 | [diff] [blame] | 819 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 820 | f2fs_lock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 821 | ret = truncate_hole(inode, pg_start, pg_end); |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 822 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 823 | } |
| 824 | } |
| 825 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 826 | return ret; |
| 827 | } |
| 828 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 829 | static int f2fs_do_collapse(struct inode *inode, pgoff_t start, pgoff_t end) |
| 830 | { |
| 831 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 832 | struct dnode_of_data dn; |
| 833 | pgoff_t nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
| 834 | int ret = 0; |
| 835 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 836 | for (; end < nrpages; start++, end++) { |
| 837 | block_t new_addr, old_addr; |
| 838 | |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 839 | f2fs_lock_op(sbi); |
| 840 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 841 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 842 | ret = get_dnode_of_data(&dn, end, LOOKUP_NODE_RA); |
| 843 | if (ret && ret != -ENOENT) { |
| 844 | goto out; |
| 845 | } else if (ret == -ENOENT) { |
| 846 | new_addr = NULL_ADDR; |
| 847 | } else { |
| 848 | new_addr = dn.data_blkaddr; |
| 849 | truncate_data_blocks_range(&dn, 1); |
| 850 | f2fs_put_dnode(&dn); |
| 851 | } |
| 852 | |
| 853 | if (new_addr == NULL_ADDR) { |
| 854 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 855 | ret = get_dnode_of_data(&dn, start, LOOKUP_NODE_RA); |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 856 | if (ret && ret != -ENOENT) { |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 857 | goto out; |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 858 | } else if (ret == -ENOENT) { |
| 859 | f2fs_unlock_op(sbi); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 860 | continue; |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 861 | } |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 862 | |
| 863 | if (dn.data_blkaddr == NULL_ADDR) { |
| 864 | f2fs_put_dnode(&dn); |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 865 | f2fs_unlock_op(sbi); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 866 | continue; |
| 867 | } else { |
| 868 | truncate_data_blocks_range(&dn, 1); |
| 869 | } |
| 870 | |
| 871 | f2fs_put_dnode(&dn); |
| 872 | } else { |
| 873 | struct page *ipage; |
| 874 | |
| 875 | ipage = get_node_page(sbi, inode->i_ino); |
| 876 | if (IS_ERR(ipage)) { |
| 877 | ret = PTR_ERR(ipage); |
| 878 | goto out; |
| 879 | } |
| 880 | |
| 881 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 882 | ret = f2fs_reserve_block(&dn, start); |
| 883 | if (ret) |
| 884 | goto out; |
| 885 | |
| 886 | old_addr = dn.data_blkaddr; |
| 887 | if (old_addr != NEW_ADDR && new_addr == NEW_ADDR) { |
| 888 | dn.data_blkaddr = NULL_ADDR; |
| 889 | f2fs_update_extent_cache(&dn); |
| 890 | invalidate_blocks(sbi, old_addr); |
| 891 | |
| 892 | dn.data_blkaddr = new_addr; |
| 893 | set_data_blkaddr(&dn); |
| 894 | } else if (new_addr != NEW_ADDR) { |
| 895 | struct node_info ni; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 896 | |
| 897 | get_node_info(sbi, dn.nid, &ni); |
Chao Yu | 528e345 | 2015-05-28 19:15:35 +0800 | [diff] [blame] | 898 | f2fs_replace_block(sbi, &dn, old_addr, new_addr, |
| 899 | ni.version, true); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 900 | } |
| 901 | |
| 902 | f2fs_put_dnode(&dn); |
| 903 | } |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 904 | f2fs_unlock_op(sbi); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 905 | } |
Chao Yu | ecbaa40 | 2015-07-16 18:18:11 +0800 | [diff] [blame] | 906 | return 0; |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 907 | out: |
| 908 | f2fs_unlock_op(sbi); |
| 909 | return ret; |
| 910 | } |
| 911 | |
| 912 | static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len) |
| 913 | { |
| 914 | pgoff_t pg_start, pg_end; |
| 915 | loff_t new_size; |
| 916 | int ret; |
| 917 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 918 | if (offset + len >= i_size_read(inode)) |
| 919 | return -EINVAL; |
| 920 | |
| 921 | /* collapse range should be aligned to block size of f2fs. */ |
| 922 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 923 | return -EINVAL; |
| 924 | |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 925 | f2fs_balance_fs(F2FS_I_SB(inode)); |
| 926 | |
| 927 | if (f2fs_has_inline_data(inode)) { |
| 928 | ret = f2fs_convert_inline_inode(inode); |
| 929 | if (ret) |
| 930 | return ret; |
| 931 | } |
| 932 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 933 | pg_start = offset >> PAGE_CACHE_SHIFT; |
| 934 | pg_end = (offset + len) >> PAGE_CACHE_SHIFT; |
| 935 | |
| 936 | /* write out all dirty pages from offset */ |
| 937 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 938 | if (ret) |
| 939 | return ret; |
| 940 | |
| 941 | truncate_pagecache(inode, offset); |
| 942 | |
| 943 | ret = f2fs_do_collapse(inode, pg_start, pg_end); |
| 944 | if (ret) |
| 945 | return ret; |
| 946 | |
| 947 | new_size = i_size_read(inode) - len; |
| 948 | |
| 949 | ret = truncate_blocks(inode, new_size, true); |
| 950 | if (!ret) |
| 951 | i_size_write(inode, new_size); |
| 952 | |
| 953 | return ret; |
| 954 | } |
| 955 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 956 | static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len, |
| 957 | int mode) |
| 958 | { |
| 959 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 960 | struct address_space *mapping = inode->i_mapping; |
| 961 | pgoff_t index, pg_start, pg_end; |
| 962 | loff_t new_size = i_size_read(inode); |
| 963 | loff_t off_start, off_end; |
| 964 | int ret = 0; |
| 965 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 966 | ret = inode_newsize_ok(inode, (len + offset)); |
| 967 | if (ret) |
| 968 | return ret; |
| 969 | |
| 970 | f2fs_balance_fs(sbi); |
| 971 | |
| 972 | if (f2fs_has_inline_data(inode)) { |
| 973 | ret = f2fs_convert_inline_inode(inode); |
| 974 | if (ret) |
| 975 | return ret; |
| 976 | } |
| 977 | |
| 978 | ret = filemap_write_and_wait_range(mapping, offset, offset + len - 1); |
| 979 | if (ret) |
| 980 | return ret; |
| 981 | |
| 982 | truncate_pagecache_range(inode, offset, offset + len - 1); |
| 983 | |
| 984 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
| 985 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; |
| 986 | |
| 987 | off_start = offset & (PAGE_CACHE_SIZE - 1); |
| 988 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); |
| 989 | |
| 990 | if (pg_start == pg_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 991 | ret = fill_zero(inode, pg_start, off_start, |
| 992 | off_end - off_start); |
| 993 | if (ret) |
| 994 | return ret; |
| 995 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 996 | if (offset + len > new_size) |
| 997 | new_size = offset + len; |
| 998 | new_size = max_t(loff_t, new_size, offset + len); |
| 999 | } else { |
| 1000 | if (off_start) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1001 | ret = fill_zero(inode, pg_start++, off_start, |
| 1002 | PAGE_CACHE_SIZE - off_start); |
| 1003 | if (ret) |
| 1004 | return ret; |
| 1005 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1006 | new_size = max_t(loff_t, new_size, |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 1007 | (loff_t)pg_start << PAGE_CACHE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1008 | } |
| 1009 | |
| 1010 | for (index = pg_start; index < pg_end; index++) { |
| 1011 | struct dnode_of_data dn; |
| 1012 | struct page *ipage; |
| 1013 | |
| 1014 | f2fs_lock_op(sbi); |
| 1015 | |
| 1016 | ipage = get_node_page(sbi, inode->i_ino); |
| 1017 | if (IS_ERR(ipage)) { |
| 1018 | ret = PTR_ERR(ipage); |
| 1019 | f2fs_unlock_op(sbi); |
| 1020 | goto out; |
| 1021 | } |
| 1022 | |
| 1023 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 1024 | ret = f2fs_reserve_block(&dn, index); |
| 1025 | if (ret) { |
| 1026 | f2fs_unlock_op(sbi); |
| 1027 | goto out; |
| 1028 | } |
| 1029 | |
| 1030 | if (dn.data_blkaddr != NEW_ADDR) { |
| 1031 | invalidate_blocks(sbi, dn.data_blkaddr); |
| 1032 | |
| 1033 | dn.data_blkaddr = NEW_ADDR; |
| 1034 | set_data_blkaddr(&dn); |
| 1035 | |
| 1036 | dn.data_blkaddr = NULL_ADDR; |
| 1037 | f2fs_update_extent_cache(&dn); |
| 1038 | } |
| 1039 | f2fs_put_dnode(&dn); |
| 1040 | f2fs_unlock_op(sbi); |
| 1041 | |
| 1042 | new_size = max_t(loff_t, new_size, |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 1043 | (loff_t)(index + 1) << PAGE_CACHE_SHIFT); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | if (off_end) { |
Chao Yu | 6394328 | 2015-08-07 18:36:06 +0800 | [diff] [blame] | 1047 | ret = fill_zero(inode, pg_end, 0, off_end); |
| 1048 | if (ret) |
| 1049 | goto out; |
| 1050 | |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1051 | new_size = max_t(loff_t, new_size, offset + len); |
| 1052 | } |
| 1053 | } |
| 1054 | |
| 1055 | out: |
| 1056 | if (!(mode & FALLOC_FL_KEEP_SIZE) && i_size_read(inode) < new_size) { |
| 1057 | i_size_write(inode, new_size); |
| 1058 | mark_inode_dirty(inode); |
| 1059 | update_inode_page(inode); |
| 1060 | } |
| 1061 | |
| 1062 | return ret; |
| 1063 | } |
| 1064 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1065 | static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len) |
| 1066 | { |
| 1067 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1068 | pgoff_t pg_start, pg_end, delta, nrpages, idx; |
| 1069 | loff_t new_size; |
| 1070 | int ret; |
| 1071 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1072 | new_size = i_size_read(inode) + len; |
| 1073 | if (new_size > inode->i_sb->s_maxbytes) |
| 1074 | return -EFBIG; |
| 1075 | |
| 1076 | if (offset >= i_size_read(inode)) |
| 1077 | return -EINVAL; |
| 1078 | |
| 1079 | /* insert range should be aligned to block size of f2fs. */ |
| 1080 | if (offset & (F2FS_BLKSIZE - 1) || len & (F2FS_BLKSIZE - 1)) |
| 1081 | return -EINVAL; |
| 1082 | |
| 1083 | f2fs_balance_fs(sbi); |
| 1084 | |
Jaegeuk Kim | 97a7b2c | 2015-06-17 13:59:05 -0700 | [diff] [blame] | 1085 | if (f2fs_has_inline_data(inode)) { |
| 1086 | ret = f2fs_convert_inline_inode(inode); |
| 1087 | if (ret) |
| 1088 | return ret; |
| 1089 | } |
| 1090 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1091 | ret = truncate_blocks(inode, i_size_read(inode), true); |
| 1092 | if (ret) |
| 1093 | return ret; |
| 1094 | |
| 1095 | /* write out all dirty pages from offset */ |
| 1096 | ret = filemap_write_and_wait_range(inode->i_mapping, offset, LLONG_MAX); |
| 1097 | if (ret) |
| 1098 | return ret; |
| 1099 | |
| 1100 | truncate_pagecache(inode, offset); |
| 1101 | |
| 1102 | pg_start = offset >> PAGE_CACHE_SHIFT; |
| 1103 | pg_end = (offset + len) >> PAGE_CACHE_SHIFT; |
| 1104 | delta = pg_end - pg_start; |
| 1105 | nrpages = (i_size_read(inode) + PAGE_SIZE - 1) / PAGE_SIZE; |
| 1106 | |
| 1107 | for (idx = nrpages - 1; idx >= pg_start && idx != -1; idx--) { |
| 1108 | struct dnode_of_data dn; |
| 1109 | struct page *ipage; |
| 1110 | block_t new_addr, old_addr; |
| 1111 | |
| 1112 | f2fs_lock_op(sbi); |
| 1113 | |
| 1114 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
| 1115 | ret = get_dnode_of_data(&dn, idx, LOOKUP_NODE_RA); |
| 1116 | if (ret && ret != -ENOENT) { |
| 1117 | goto out; |
| 1118 | } else if (ret == -ENOENT) { |
| 1119 | goto next; |
| 1120 | } else if (dn.data_blkaddr == NULL_ADDR) { |
| 1121 | f2fs_put_dnode(&dn); |
| 1122 | goto next; |
| 1123 | } else { |
| 1124 | new_addr = dn.data_blkaddr; |
| 1125 | truncate_data_blocks_range(&dn, 1); |
| 1126 | f2fs_put_dnode(&dn); |
| 1127 | } |
| 1128 | |
| 1129 | ipage = get_node_page(sbi, inode->i_ino); |
| 1130 | if (IS_ERR(ipage)) { |
| 1131 | ret = PTR_ERR(ipage); |
| 1132 | goto out; |
| 1133 | } |
| 1134 | |
| 1135 | set_new_dnode(&dn, inode, ipage, NULL, 0); |
| 1136 | ret = f2fs_reserve_block(&dn, idx + delta); |
| 1137 | if (ret) |
| 1138 | goto out; |
| 1139 | |
| 1140 | old_addr = dn.data_blkaddr; |
| 1141 | f2fs_bug_on(sbi, old_addr != NEW_ADDR); |
| 1142 | |
| 1143 | if (new_addr != NEW_ADDR) { |
| 1144 | struct node_info ni; |
| 1145 | |
| 1146 | get_node_info(sbi, dn.nid, &ni); |
| 1147 | f2fs_replace_block(sbi, &dn, old_addr, new_addr, |
| 1148 | ni.version, true); |
| 1149 | } |
| 1150 | f2fs_put_dnode(&dn); |
| 1151 | next: |
| 1152 | f2fs_unlock_op(sbi); |
| 1153 | } |
| 1154 | |
| 1155 | i_size_write(inode, new_size); |
| 1156 | return 0; |
| 1157 | out: |
| 1158 | f2fs_unlock_op(sbi); |
| 1159 | return ret; |
| 1160 | } |
| 1161 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1162 | static int expand_inode_data(struct inode *inode, loff_t offset, |
| 1163 | loff_t len, int mode) |
| 1164 | { |
Jaegeuk Kim | 4081363 | 2014-09-02 15:31:18 -0700 | [diff] [blame] | 1165 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1166 | pgoff_t index, pg_start, pg_end; |
| 1167 | loff_t new_size = i_size_read(inode); |
| 1168 | loff_t off_start, off_end; |
| 1169 | int ret = 0; |
| 1170 | |
Chao Yu | 497a093 | 2014-08-04 10:11:17 +0800 | [diff] [blame] | 1171 | f2fs_balance_fs(sbi); |
| 1172 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1173 | ret = inode_newsize_ok(inode, (len + offset)); |
| 1174 | if (ret) |
| 1175 | return ret; |
| 1176 | |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1177 | if (f2fs_has_inline_data(inode)) { |
| 1178 | ret = f2fs_convert_inline_inode(inode); |
| 1179 | if (ret) |
| 1180 | return ret; |
| 1181 | } |
Jaegeuk Kim | 9e09fc8 | 2013-12-27 12:28:59 +0900 | [diff] [blame] | 1182 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1183 | pg_start = ((unsigned long long) offset) >> PAGE_CACHE_SHIFT; |
| 1184 | pg_end = ((unsigned long long) offset + len) >> PAGE_CACHE_SHIFT; |
| 1185 | |
| 1186 | off_start = offset & (PAGE_CACHE_SIZE - 1); |
| 1187 | off_end = (offset + len) & (PAGE_CACHE_SIZE - 1); |
| 1188 | |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1189 | f2fs_lock_op(sbi); |
| 1190 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1191 | for (index = pg_start; index <= pg_end; index++) { |
| 1192 | struct dnode_of_data dn; |
| 1193 | |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1194 | if (index == pg_end && !off_end) |
| 1195 | goto noalloc; |
| 1196 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1197 | set_new_dnode(&dn, inode, NULL, NULL, 0); |
Huajun Li | b600965 | 2013-11-10 23:13:18 +0800 | [diff] [blame] | 1198 | ret = f2fs_reserve_block(&dn, index); |
Huajun Li | b600965 | 2013-11-10 23:13:18 +0800 | [diff] [blame] | 1199 | if (ret) |
| 1200 | break; |
Jaegeuk Kim | 98397ff | 2014-06-13 13:07:31 +0900 | [diff] [blame] | 1201 | noalloc: |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1202 | if (pg_start == pg_end) |
| 1203 | new_size = offset + len; |
| 1204 | else if (index == pg_start && off_start) |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 1205 | new_size = (loff_t)(index + 1) << PAGE_CACHE_SHIFT; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1206 | else if (index == pg_end) |
Chao Yu | 9edcdab | 2015-09-11 14:43:52 +0800 | [diff] [blame] | 1207 | new_size = ((loff_t)index << PAGE_CACHE_SHIFT) + |
| 1208 | off_end; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1209 | else |
| 1210 | new_size += PAGE_CACHE_SIZE; |
| 1211 | } |
| 1212 | |
| 1213 | if (!(mode & FALLOC_FL_KEEP_SIZE) && |
| 1214 | i_size_read(inode) < new_size) { |
| 1215 | i_size_write(inode, new_size); |
| 1216 | mark_inode_dirty(inode); |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1217 | update_inode_page(inode); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1218 | } |
Jaegeuk Kim | ead4327 | 2014-06-13 13:05:55 +0900 | [diff] [blame] | 1219 | f2fs_unlock_op(sbi); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1220 | |
| 1221 | return ret; |
| 1222 | } |
| 1223 | |
| 1224 | static long f2fs_fallocate(struct file *file, int mode, |
| 1225 | loff_t offset, loff_t len) |
| 1226 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1227 | struct inode *inode = file_inode(file); |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1228 | long ret = 0; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1229 | |
Chao Yu | c998012 | 2015-09-11 14:39:02 +0800 | [diff] [blame] | 1230 | /* f2fs only support ->fallocate for regular file */ |
| 1231 | if (!S_ISREG(inode->i_mode)) |
| 1232 | return -EINVAL; |
| 1233 | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1234 | if (f2fs_encrypted_inode(inode) && |
| 1235 | (mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE))) |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1236 | return -EOPNOTSUPP; |
| 1237 | |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1238 | if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE | |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1239 | FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_ZERO_RANGE | |
| 1240 | FALLOC_FL_INSERT_RANGE)) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1241 | return -EOPNOTSUPP; |
| 1242 | |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1243 | mutex_lock(&inode->i_mutex); |
| 1244 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1245 | if (mode & FALLOC_FL_PUNCH_HOLE) { |
| 1246 | if (offset >= inode->i_size) |
| 1247 | goto out; |
| 1248 | |
Chao Yu | a66c7b2 | 2013-11-22 16:52:50 +0800 | [diff] [blame] | 1249 | ret = punch_hole(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1250 | } else if (mode & FALLOC_FL_COLLAPSE_RANGE) { |
| 1251 | ret = f2fs_collapse_range(inode, offset, len); |
Chao Yu | 75cd4e0 | 2015-05-06 13:11:13 +0800 | [diff] [blame] | 1252 | } else if (mode & FALLOC_FL_ZERO_RANGE) { |
| 1253 | ret = f2fs_zero_range(inode, offset, len, mode); |
Chao Yu | f62185d | 2015-05-28 19:16:57 +0800 | [diff] [blame] | 1254 | } else if (mode & FALLOC_FL_INSERT_RANGE) { |
| 1255 | ret = f2fs_insert_range(inode, offset, len); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1256 | } else { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1257 | ret = expand_inode_data(inode, offset, len, mode); |
Chao Yu | b4ace33 | 2015-05-06 13:09:46 +0800 | [diff] [blame] | 1258 | } |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1259 | |
Namjae Jeon | 3af60a4 | 2012-12-30 14:52:37 +0900 | [diff] [blame] | 1260 | if (!ret) { |
| 1261 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 1262 | mark_inode_dirty(inode); |
| 1263 | } |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1264 | |
Taehee Yoo | 587c0a4 | 2015-04-21 15:59:12 +0900 | [diff] [blame] | 1265 | out: |
Chao Yu | 3375f69 | 2014-01-28 10:29:26 +0800 | [diff] [blame] | 1266 | mutex_unlock(&inode->i_mutex); |
| 1267 | |
Namjae Jeon | c01e285 | 2013-04-23 17:00:52 +0900 | [diff] [blame] | 1268 | trace_f2fs_fallocate(inode, mode, offset, len, ret); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1269 | return ret; |
| 1270 | } |
| 1271 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1272 | static int f2fs_release_file(struct inode *inode, struct file *filp) |
| 1273 | { |
| 1274 | /* some remained atomic pages should discarded */ |
| 1275 | if (f2fs_is_atomic_file(inode)) |
| 1276 | commit_inmem_pages(inode, true); |
| 1277 | if (f2fs_is_volatile_file(inode)) { |
| 1278 | set_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
| 1279 | filemap_fdatawrite(inode->i_mapping); |
| 1280 | clear_inode_flag(F2FS_I(inode), FI_DROP_CACHE); |
| 1281 | } |
| 1282 | return 0; |
| 1283 | } |
| 1284 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1285 | #define F2FS_REG_FLMASK (~(FS_DIRSYNC_FL | FS_TOPDIR_FL)) |
| 1286 | #define F2FS_OTHER_FLMASK (FS_NODUMP_FL | FS_NOATIME_FL) |
| 1287 | |
| 1288 | static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) |
| 1289 | { |
| 1290 | if (S_ISDIR(mode)) |
| 1291 | return flags; |
| 1292 | else if (S_ISREG(mode)) |
| 1293 | return flags & F2FS_REG_FLMASK; |
| 1294 | else |
| 1295 | return flags & F2FS_OTHER_FLMASK; |
| 1296 | } |
| 1297 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1298 | static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1299 | { |
Al Viro | 6131ffa | 2013-02-27 16:59:05 -0500 | [diff] [blame] | 1300 | struct inode *inode = file_inode(filp); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1301 | struct f2fs_inode_info *fi = F2FS_I(inode); |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1302 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1303 | return put_user(flags, (int __user *)arg); |
| 1304 | } |
| 1305 | |
| 1306 | static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) |
| 1307 | { |
| 1308 | struct inode *inode = file_inode(filp); |
| 1309 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 1310 | unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; |
| 1311 | unsigned int oldflags; |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1312 | int ret; |
| 1313 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1314 | ret = mnt_want_write_file(filp); |
| 1315 | if (ret) |
| 1316 | return ret; |
| 1317 | |
| 1318 | if (!inode_owner_or_capable(inode)) { |
| 1319 | ret = -EACCES; |
| 1320 | goto out; |
| 1321 | } |
| 1322 | |
| 1323 | if (get_user(flags, (int __user *)arg)) { |
| 1324 | ret = -EFAULT; |
| 1325 | goto out; |
| 1326 | } |
| 1327 | |
| 1328 | flags = f2fs_mask_flags(inode->i_mode, flags); |
| 1329 | |
| 1330 | mutex_lock(&inode->i_mutex); |
| 1331 | |
| 1332 | oldflags = fi->i_flags; |
| 1333 | |
| 1334 | if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { |
| 1335 | if (!capable(CAP_LINUX_IMMUTABLE)) { |
| 1336 | mutex_unlock(&inode->i_mutex); |
| 1337 | ret = -EPERM; |
| 1338 | goto out; |
| 1339 | } |
| 1340 | } |
| 1341 | |
| 1342 | flags = flags & FS_FL_USER_MODIFIABLE; |
| 1343 | flags |= oldflags & ~FS_FL_USER_MODIFIABLE; |
| 1344 | fi->i_flags = flags; |
| 1345 | mutex_unlock(&inode->i_mutex); |
| 1346 | |
| 1347 | f2fs_set_inode_flags(inode); |
| 1348 | inode->i_ctime = CURRENT_TIME; |
| 1349 | mark_inode_dirty(inode); |
| 1350 | out: |
| 1351 | mnt_drop_write_file(filp); |
| 1352 | return ret; |
| 1353 | } |
| 1354 | |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1355 | static int f2fs_ioc_getversion(struct file *filp, unsigned long arg) |
| 1356 | { |
| 1357 | struct inode *inode = file_inode(filp); |
| 1358 | |
| 1359 | return put_user(inode->i_generation, (int __user *)arg); |
| 1360 | } |
| 1361 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1362 | static int f2fs_ioc_start_atomic_write(struct file *filp) |
| 1363 | { |
| 1364 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1365 | int ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1366 | |
| 1367 | if (!inode_owner_or_capable(inode)) |
| 1368 | return -EACCES; |
| 1369 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1370 | f2fs_balance_fs(F2FS_I_SB(inode)); |
| 1371 | |
| 1372 | if (f2fs_is_atomic_file(inode)) |
| 1373 | return 0; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1374 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1375 | ret = f2fs_convert_inline_inode(inode); |
| 1376 | if (ret) |
| 1377 | return ret; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1378 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1379 | set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
| 1380 | return 0; |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1381 | } |
| 1382 | |
| 1383 | static int f2fs_ioc_commit_atomic_write(struct file *filp) |
| 1384 | { |
| 1385 | struct inode *inode = file_inode(filp); |
| 1386 | int ret; |
| 1387 | |
| 1388 | if (!inode_owner_or_capable(inode)) |
| 1389 | return -EACCES; |
| 1390 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1391 | if (f2fs_is_volatile_file(inode)) |
| 1392 | return 0; |
| 1393 | |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1394 | ret = mnt_want_write_file(filp); |
| 1395 | if (ret) |
| 1396 | return ret; |
| 1397 | |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1398 | if (f2fs_is_atomic_file(inode)) { |
| 1399 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1400 | ret = commit_inmem_pages(inode, false); |
| 1401 | if (ret) |
| 1402 | goto err_out; |
Jaegeuk Kim | 6282adb | 2015-07-25 00:29:17 -0700 | [diff] [blame] | 1403 | } |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1404 | |
Chao Yu | a5f64b6 | 2015-07-17 18:05:21 +0800 | [diff] [blame] | 1405 | ret = f2fs_sync_file(filp, 0, LLONG_MAX, 0); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1406 | err_out: |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1407 | mnt_drop_write_file(filp); |
| 1408 | return ret; |
| 1409 | } |
| 1410 | |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1411 | static int f2fs_ioc_start_volatile_write(struct file *filp) |
| 1412 | { |
| 1413 | struct inode *inode = file_inode(filp); |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1414 | int ret; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1415 | |
| 1416 | if (!inode_owner_or_capable(inode)) |
| 1417 | return -EACCES; |
| 1418 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1419 | if (f2fs_is_volatile_file(inode)) |
| 1420 | return 0; |
| 1421 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1422 | ret = f2fs_convert_inline_inode(inode); |
| 1423 | if (ret) |
| 1424 | return ret; |
Jaegeuk Kim | b3d208f | 2014-10-23 19:48:09 -0700 | [diff] [blame] | 1425 | |
Chao Yu | f4c9c74 | 2015-07-17 18:06:35 +0800 | [diff] [blame] | 1426 | set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
| 1427 | return 0; |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1428 | } |
| 1429 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1430 | static int f2fs_ioc_release_volatile_write(struct file *filp) |
| 1431 | { |
| 1432 | struct inode *inode = file_inode(filp); |
| 1433 | |
| 1434 | if (!inode_owner_or_capable(inode)) |
| 1435 | return -EACCES; |
| 1436 | |
| 1437 | if (!f2fs_is_volatile_file(inode)) |
| 1438 | return 0; |
| 1439 | |
Jaegeuk Kim | 3c6c2be | 2015-03-17 17:16:35 -0700 | [diff] [blame] | 1440 | if (!f2fs_is_first_block_written(inode)) |
| 1441 | return truncate_partial_data_page(inode, 0, true); |
| 1442 | |
Nicholas Krause | 538e17e | 2015-09-06 08:28:46 -0400 | [diff] [blame] | 1443 | return punch_hole(inode, 0, F2FS_BLKSIZE); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1444 | } |
| 1445 | |
| 1446 | static int f2fs_ioc_abort_volatile_write(struct file *filp) |
| 1447 | { |
| 1448 | struct inode *inode = file_inode(filp); |
| 1449 | int ret; |
| 1450 | |
| 1451 | if (!inode_owner_or_capable(inode)) |
| 1452 | return -EACCES; |
| 1453 | |
| 1454 | ret = mnt_want_write_file(filp); |
| 1455 | if (ret) |
| 1456 | return ret; |
| 1457 | |
| 1458 | f2fs_balance_fs(F2FS_I_SB(inode)); |
| 1459 | |
| 1460 | if (f2fs_is_atomic_file(inode)) { |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1461 | clear_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); |
Jaegeuk Kim | edb27de | 2015-07-25 00:52:52 -0700 | [diff] [blame] | 1462 | commit_inmem_pages(inode, true); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1463 | } |
| 1464 | |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1465 | if (f2fs_is_volatile_file(inode)) |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1466 | clear_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); |
Jaegeuk Kim | de6a8ec | 2015-06-08 17:51:10 -0700 | [diff] [blame] | 1467 | |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1468 | mnt_drop_write_file(filp); |
| 1469 | return ret; |
| 1470 | } |
| 1471 | |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1472 | static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg) |
| 1473 | { |
| 1474 | struct inode *inode = file_inode(filp); |
| 1475 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1476 | struct super_block *sb = sbi->sb; |
| 1477 | __u32 in; |
| 1478 | |
| 1479 | if (!capable(CAP_SYS_ADMIN)) |
| 1480 | return -EPERM; |
| 1481 | |
| 1482 | if (get_user(in, (__u32 __user *)arg)) |
| 1483 | return -EFAULT; |
| 1484 | |
| 1485 | switch (in) { |
| 1486 | case F2FS_GOING_DOWN_FULLSYNC: |
| 1487 | sb = freeze_bdev(sb->s_bdev); |
| 1488 | if (sb && !IS_ERR(sb)) { |
| 1489 | f2fs_stop_checkpoint(sbi); |
| 1490 | thaw_bdev(sb->s_bdev, sb); |
| 1491 | } |
| 1492 | break; |
| 1493 | case F2FS_GOING_DOWN_METASYNC: |
| 1494 | /* do checkpoint only */ |
| 1495 | f2fs_sync_fs(sb, 1); |
| 1496 | f2fs_stop_checkpoint(sbi); |
| 1497 | break; |
| 1498 | case F2FS_GOING_DOWN_NOSYNC: |
| 1499 | f2fs_stop_checkpoint(sbi); |
| 1500 | break; |
| 1501 | default: |
| 1502 | return -EINVAL; |
| 1503 | } |
| 1504 | return 0; |
| 1505 | } |
| 1506 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1507 | static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) |
| 1508 | { |
| 1509 | struct inode *inode = file_inode(filp); |
| 1510 | struct super_block *sb = inode->i_sb; |
| 1511 | struct request_queue *q = bdev_get_queue(sb->s_bdev); |
| 1512 | struct fstrim_range range; |
| 1513 | int ret; |
| 1514 | |
| 1515 | if (!capable(CAP_SYS_ADMIN)) |
| 1516 | return -EPERM; |
| 1517 | |
| 1518 | if (!blk_queue_discard(q)) |
| 1519 | return -EOPNOTSUPP; |
| 1520 | |
| 1521 | if (copy_from_user(&range, (struct fstrim_range __user *)arg, |
| 1522 | sizeof(range))) |
| 1523 | return -EFAULT; |
| 1524 | |
| 1525 | range.minlen = max((unsigned int)range.minlen, |
| 1526 | q->limits.discard_granularity); |
| 1527 | ret = f2fs_trim_fs(F2FS_SB(sb), &range); |
| 1528 | if (ret < 0) |
| 1529 | return ret; |
| 1530 | |
| 1531 | if (copy_to_user((struct fstrim_range __user *)arg, &range, |
| 1532 | sizeof(range))) |
| 1533 | return -EFAULT; |
| 1534 | return 0; |
| 1535 | } |
| 1536 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1537 | static bool uuid_is_nonzero(__u8 u[16]) |
| 1538 | { |
| 1539 | int i; |
| 1540 | |
| 1541 | for (i = 0; i < 16; i++) |
| 1542 | if (u[i]) |
| 1543 | return true; |
| 1544 | return false; |
| 1545 | } |
| 1546 | |
| 1547 | static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg) |
| 1548 | { |
| 1549 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 1550 | struct f2fs_encryption_policy policy; |
| 1551 | struct inode *inode = file_inode(filp); |
| 1552 | |
| 1553 | if (copy_from_user(&policy, (struct f2fs_encryption_policy __user *)arg, |
| 1554 | sizeof(policy))) |
| 1555 | return -EFAULT; |
| 1556 | |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1557 | return f2fs_process_policy(&policy, inode); |
| 1558 | #else |
| 1559 | return -EOPNOTSUPP; |
| 1560 | #endif |
| 1561 | } |
| 1562 | |
| 1563 | static int f2fs_ioc_get_encryption_policy(struct file *filp, unsigned long arg) |
| 1564 | { |
| 1565 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 1566 | struct f2fs_encryption_policy policy; |
| 1567 | struct inode *inode = file_inode(filp); |
| 1568 | int err; |
| 1569 | |
| 1570 | err = f2fs_get_policy(inode, &policy); |
| 1571 | if (err) |
| 1572 | return err; |
| 1573 | |
| 1574 | if (copy_to_user((struct f2fs_encryption_policy __user *)arg, &policy, |
| 1575 | sizeof(policy))) |
| 1576 | return -EFAULT; |
| 1577 | return 0; |
| 1578 | #else |
| 1579 | return -EOPNOTSUPP; |
| 1580 | #endif |
| 1581 | } |
| 1582 | |
| 1583 | static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) |
| 1584 | { |
| 1585 | struct inode *inode = file_inode(filp); |
| 1586 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1587 | int err; |
| 1588 | |
| 1589 | if (!f2fs_sb_has_crypto(inode->i_sb)) |
| 1590 | return -EOPNOTSUPP; |
| 1591 | |
| 1592 | if (uuid_is_nonzero(sbi->raw_super->encrypt_pw_salt)) |
| 1593 | goto got_it; |
| 1594 | |
| 1595 | err = mnt_want_write_file(filp); |
| 1596 | if (err) |
| 1597 | return err; |
| 1598 | |
| 1599 | /* update superblock with uuid */ |
| 1600 | generate_random_uuid(sbi->raw_super->encrypt_pw_salt); |
| 1601 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1602 | err = f2fs_commit_super(sbi, false); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1603 | |
| 1604 | mnt_drop_write_file(filp); |
| 1605 | if (err) { |
| 1606 | /* undo new data */ |
| 1607 | memset(sbi->raw_super->encrypt_pw_salt, 0, 16); |
| 1608 | return err; |
| 1609 | } |
| 1610 | got_it: |
| 1611 | if (copy_to_user((__u8 __user *)arg, sbi->raw_super->encrypt_pw_salt, |
| 1612 | 16)) |
| 1613 | return -EFAULT; |
| 1614 | return 0; |
| 1615 | } |
| 1616 | |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1617 | static int f2fs_ioc_gc(struct file *filp, unsigned long arg) |
| 1618 | { |
| 1619 | struct inode *inode = file_inode(filp); |
| 1620 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1621 | __u32 sync; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1622 | |
| 1623 | if (!capable(CAP_SYS_ADMIN)) |
| 1624 | return -EPERM; |
| 1625 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1626 | if (get_user(sync, (__u32 __user *)arg)) |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1627 | return -EFAULT; |
| 1628 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1629 | if (f2fs_readonly(sbi->sb)) |
| 1630 | return -EROFS; |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1631 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1632 | if (!sync) { |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1633 | if (!mutex_trylock(&sbi->gc_mutex)) |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1634 | return -EBUSY; |
| 1635 | } else { |
| 1636 | mutex_lock(&sbi->gc_mutex); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1637 | } |
| 1638 | |
Chao Yu | d530d4d | 2015-10-05 22:22:44 +0800 | [diff] [blame] | 1639 | return f2fs_gc(sbi, sync); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1640 | } |
| 1641 | |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame^] | 1642 | static int f2fs_ioc_write_checkpoint(struct file *filp, unsigned long arg) |
| 1643 | { |
| 1644 | struct inode *inode = file_inode(filp); |
| 1645 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
| 1646 | struct cp_control cpc; |
| 1647 | |
| 1648 | if (!capable(CAP_SYS_ADMIN)) |
| 1649 | return -EPERM; |
| 1650 | |
| 1651 | if (f2fs_readonly(sbi->sb)) |
| 1652 | return -EROFS; |
| 1653 | |
| 1654 | cpc.reason = __get_cp_reason(sbi); |
| 1655 | |
| 1656 | mutex_lock(&sbi->gc_mutex); |
| 1657 | write_checkpoint(sbi, &cpc); |
| 1658 | mutex_unlock(&sbi->gc_mutex); |
| 1659 | |
| 1660 | return 0; |
| 1661 | } |
| 1662 | |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1663 | long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) |
| 1664 | { |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1665 | switch (cmd) { |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 1666 | case F2FS_IOC_GETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1667 | return f2fs_ioc_getflags(filp, arg); |
Namjae Jeon | 6a3e8ef | 2013-06-08 21:25:28 +0900 | [diff] [blame] | 1668 | case F2FS_IOC_SETFLAGS: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1669 | return f2fs_ioc_setflags(filp, arg); |
Chao Yu | d49f3e8 | 2015-01-23 20:36:04 +0800 | [diff] [blame] | 1670 | case F2FS_IOC_GETVERSION: |
| 1671 | return f2fs_ioc_getversion(filp, arg); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 1672 | case F2FS_IOC_START_ATOMIC_WRITE: |
| 1673 | return f2fs_ioc_start_atomic_write(filp); |
| 1674 | case F2FS_IOC_COMMIT_ATOMIC_WRITE: |
| 1675 | return f2fs_ioc_commit_atomic_write(filp); |
Jaegeuk Kim | 02a1335 | 2014-10-06 16:11:16 -0700 | [diff] [blame] | 1676 | case F2FS_IOC_START_VOLATILE_WRITE: |
| 1677 | return f2fs_ioc_start_volatile_write(filp); |
Jaegeuk Kim | 1e84371 | 2014-12-09 06:08:59 -0800 | [diff] [blame] | 1678 | case F2FS_IOC_RELEASE_VOLATILE_WRITE: |
| 1679 | return f2fs_ioc_release_volatile_write(filp); |
| 1680 | case F2FS_IOC_ABORT_VOLATILE_WRITE: |
| 1681 | return f2fs_ioc_abort_volatile_write(filp); |
Jaegeuk Kim | 1abff93 | 2015-01-08 19:15:53 -0800 | [diff] [blame] | 1682 | case F2FS_IOC_SHUTDOWN: |
| 1683 | return f2fs_ioc_shutdown(filp, arg); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 1684 | case FITRIM: |
Jaegeuk Kim | 52656e6 | 2014-09-24 15:37:02 -0700 | [diff] [blame] | 1685 | return f2fs_ioc_fitrim(filp, arg); |
Jaegeuk Kim | f424f66 | 2015-04-20 15:19:06 -0700 | [diff] [blame] | 1686 | case F2FS_IOC_SET_ENCRYPTION_POLICY: |
| 1687 | return f2fs_ioc_set_encryption_policy(filp, arg); |
| 1688 | case F2FS_IOC_GET_ENCRYPTION_POLICY: |
| 1689 | return f2fs_ioc_get_encryption_policy(filp, arg); |
| 1690 | case F2FS_IOC_GET_ENCRYPTION_PWSALT: |
| 1691 | return f2fs_ioc_get_encryption_pwsalt(filp, arg); |
Chao Yu | c1c1b58 | 2015-07-10 18:08:10 +0800 | [diff] [blame] | 1692 | case F2FS_IOC_GARBAGE_COLLECT: |
| 1693 | return f2fs_ioc_gc(filp, arg); |
Chao Yu | 456b88e | 2015-10-05 22:24:19 +0800 | [diff] [blame^] | 1694 | case F2FS_IOC_WRITE_CHECKPOINT: |
| 1695 | return f2fs_ioc_write_checkpoint(filp, arg); |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1696 | default: |
| 1697 | return -ENOTTY; |
| 1698 | } |
| 1699 | } |
| 1700 | |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1701 | static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from) |
| 1702 | { |
| 1703 | struct inode *inode = file_inode(iocb->ki_filp); |
| 1704 | |
| 1705 | if (f2fs_encrypted_inode(inode) && |
| 1706 | !f2fs_has_encryption_key(inode) && |
| 1707 | f2fs_get_encryption_info(inode)) |
| 1708 | return -EACCES; |
| 1709 | |
| 1710 | return generic_file_write_iter(iocb, from); |
| 1711 | } |
| 1712 | |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1713 | #ifdef CONFIG_COMPAT |
| 1714 | long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 1715 | { |
| 1716 | switch (cmd) { |
| 1717 | case F2FS_IOC32_GETFLAGS: |
| 1718 | cmd = F2FS_IOC_GETFLAGS; |
| 1719 | break; |
| 1720 | case F2FS_IOC32_SETFLAGS: |
| 1721 | cmd = F2FS_IOC_SETFLAGS; |
| 1722 | break; |
| 1723 | default: |
| 1724 | return -ENOIOCTLCMD; |
| 1725 | } |
| 1726 | return f2fs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); |
| 1727 | } |
| 1728 | #endif |
| 1729 | |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1730 | const struct file_operations f2fs_file_operations = { |
Chao Yu | 267378d | 2014-04-23 14:10:24 +0800 | [diff] [blame] | 1731 | .llseek = f2fs_llseek, |
Al Viro | aad4f8b | 2014-04-02 14:33:16 -0400 | [diff] [blame] | 1732 | .read_iter = generic_file_read_iter, |
Jaegeuk Kim | fcc85a4 | 2015-04-21 20:39:58 -0700 | [diff] [blame] | 1733 | .write_iter = f2fs_file_write_iter, |
| 1734 | .open = f2fs_file_open, |
Jaegeuk Kim | 1266223 | 2014-12-05 14:37:37 -0800 | [diff] [blame] | 1735 | .release = f2fs_release_file, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1736 | .mmap = f2fs_file_mmap, |
| 1737 | .fsync = f2fs_sync_file, |
| 1738 | .fallocate = f2fs_fallocate, |
| 1739 | .unlocked_ioctl = f2fs_ioctl, |
Namjae Jeon | e975082 | 2013-02-04 23:41:41 +0900 | [diff] [blame] | 1740 | #ifdef CONFIG_COMPAT |
| 1741 | .compat_ioctl = f2fs_compat_ioctl, |
| 1742 | #endif |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1743 | .splice_read = generic_file_splice_read, |
Al Viro | 8d02076 | 2014-04-05 04:27:08 -0400 | [diff] [blame] | 1744 | .splice_write = iter_file_splice_write, |
Jaegeuk Kim | fbfa2cc | 2012-11-02 17:09:44 +0900 | [diff] [blame] | 1745 | }; |