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https://github.com/torvalds/linux.git
synced 2024-12-07 03:21:32 +00:00
70d201a408
In this series, we've some progress to support Zoned block device regarding to the power-cut recovery flow and enabling checkpoint=disable feature which is essential for Android OTA. Other than that, some patches touched sysfs entries and tracepoints which are minor, while several bug fixes on error handlers and compression flows are good to improve the overall stability. Enhancement: - enable checkpoint=disable for zoned block device - sysfs entries such as discard status, discard_io_aware, dir_level - tracepoints such as f2fs_vm_page_mkwrite(), f2fs_rename(), f2fs_new_inode() - use shared inode lock during f2fs_fiemap() and f2fs_seek_block() Bug fix: - address some power-cut recovery issues on zoned block device - handle errors and logics on do_garbage_collect(), f2fs_reserve_new_block(), f2fs_move_file_range(), f2fs_recover_xattr_data() - don't set FI_PREALLOCATED_ALL for partial write - fix to update iostat correctly in f2fs_filemap_fault() - fix to wait on block writeback for post_read case - fix to tag gcing flag on page during block migration - restrict max filesize for 16K f2fs - fix to avoid dirent corruption - explicitly null-terminate the xattr list There are also several clean-up patches to remove dead codes and better readability. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE00UqedjCtOrGVvQiQBSofoJIUNIFAmWgMYcACgkQQBSofoJI UNJShxAAiYOXP7LPOAbPS1251BBgl8AIfs6u96hGTZkxOYsLHrBBbPbkWf3+nVbC JsBsVOe9K50rssK9kPg6XHPbmFGC8ERlyYcZTpONLfjtHOaQicbRnc//2qOvnCx8 JOKcMVkZyLU/HbOCoUW6mzNCQlOl0aAV8tRcb7jwAxT0HgpjHTHxej/62gRcPKzC 1E5w4iNTY//R97YGB36jPeGlKhbBZ7Ox1NM6AWadgE7B0j9rcYiBnPQllyeyaVVo XMCWRdl42tNMks2zgvU+vC41OrZ55bwLTQmVj3P1wnyKXig5/ZLQsrEcIGE+b2tP Mx+imCIRNYZqLwv5KYl6FU+KuLQGuZT1AjpP70Cb95WLyiYvVE6+xeiZg0fVTCEF 3Hg7lEqMtAEAh1NEmJyYmbiAm9KQ3vHyse9ix++tfm+Xvgqj8b2flmzAtIFKpCBV J+yFI+A55IYuYZt7gzPoZLkQL0tULPf80TKQrzwlnHNtZ6T6FK2Nunu+Urwf1/Th s5IulqHJZxHU/Bgd6yQZUVfDILcXTkqNCpO3+qLZMPZizlH1hXiJFTeVzS6mnGvZ sK2LL4rEJ8EhDHU1F0SJzCWJcuR8cQ/t2zKYUygo9LvHbtEM1bZwC1Bqfolt7NrU +pgiM2wnE9yjkPdfZN1JgYZDq0/lGvxPQ5NAc/5ERX71QonRyn8= =MQl3 -----END PGP SIGNATURE----- Merge tag 'f2fs-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs update from Jaegeuk Kim: "In this series, we've some progress to support Zoned block device regarding to the power-cut recovery flow and enabling checkpoint=disable feature which is essential for Android OTA. Other than that, some patches touched sysfs entries and tracepoints which are minor, while several bug fixes on error handlers and compression flows are good to improve the overall stability. Enhancements: - enable checkpoint=disable for zoned block device - sysfs entries such as discard status, discard_io_aware, dir_level - tracepoints such as f2fs_vm_page_mkwrite(), f2fs_rename(), f2fs_new_inode() - use shared inode lock during f2fs_fiemap() and f2fs_seek_block() Bug fixes: - address some power-cut recovery issues on zoned block device - handle errors and logics on do_garbage_collect(), f2fs_reserve_new_block(), f2fs_move_file_range(), f2fs_recover_xattr_data() - don't set FI_PREALLOCATED_ALL for partial write - fix to update iostat correctly in f2fs_filemap_fault() - fix to wait on block writeback for post_read case - fix to tag gcing flag on page during block migration - restrict max filesize for 16K f2fs - fix to avoid dirent corruption - explicitly null-terminate the xattr list There are also several clean-up patches to remove dead codes and better readability" * tag 'f2fs-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits) f2fs: show more discard status by sysfs f2fs: Add error handling for negative returns from do_garbage_collect f2fs: Constrain the modification range of dir_level in the sysfs f2fs: Use wait_event_freezable_timeout() for freezable kthread f2fs: fix to check return value of f2fs_recover_xattr_data f2fs: don't set FI_PREALLOCATED_ALL for partial write f2fs: fix to update iostat correctly in f2fs_filemap_fault() f2fs: fix to check compress file in f2fs_move_file_range() f2fs: fix to wait on block writeback for post_read case f2fs: fix to tag gcing flag on page during block migration f2fs: add tracepoint for f2fs_vm_page_mkwrite() f2fs: introduce f2fs_invalidate_internal_cache() for cleanup f2fs: update blkaddr in __set_data_blkaddr() for cleanup f2fs: introduce get_dnode_addr() to clean up codes f2fs: delete obsolete FI_DROP_CACHE f2fs: delete obsolete FI_FIRST_BLOCK_WRITTEN f2fs: Restrict max filesize for 16K f2fs f2fs: let's finish or reset zones all the time f2fs: check write pointers when checkpoint=disable f2fs: fix write pointers on zoned device after roll forward ...
1414 lines
33 KiB
C
1414 lines
33 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* fs/f2fs/namei.c
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*
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* Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*/
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#include <linux/fs.h>
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#include <linux/f2fs_fs.h>
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#include <linux/pagemap.h>
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#include <linux/sched.h>
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#include <linux/ctype.h>
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#include <linux/random.h>
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#include <linux/dcache.h>
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#include <linux/namei.h>
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#include <linux/quotaops.h>
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#include "f2fs.h"
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#include "node.h"
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#include "segment.h"
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#include "xattr.h"
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#include "acl.h"
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#include <trace/events/f2fs.h>
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static inline bool is_extension_exist(const unsigned char *s, const char *sub,
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bool tmp_ext, bool tmp_dot)
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{
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size_t slen = strlen(s);
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size_t sublen = strlen(sub);
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int i;
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if (sublen == 1 && *sub == '*')
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return true;
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/*
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* filename format of multimedia file should be defined as:
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* "filename + '.' + extension + (optional: '.' + temp extension)".
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*/
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if (slen < sublen + 2)
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return false;
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if (!tmp_ext) {
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/* file has no temp extension */
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if (s[slen - sublen - 1] != '.')
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return false;
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return !strncasecmp(s + slen - sublen, sub, sublen);
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}
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for (i = 1; i < slen - sublen; i++) {
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if (s[i] != '.')
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continue;
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if (!strncasecmp(s + i + 1, sub, sublen)) {
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if (!tmp_dot)
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return true;
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if (i == slen - sublen - 1 || s[i + 1 + sublen] == '.')
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return true;
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}
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}
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return false;
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}
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static inline bool is_temperature_extension(const unsigned char *s, const char *sub)
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{
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return is_extension_exist(s, sub, true, false);
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}
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static inline bool is_compress_extension(const unsigned char *s, const char *sub)
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{
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return is_extension_exist(s, sub, true, true);
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}
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int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
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bool hot, bool set)
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{
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__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
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int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
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int hot_count = sbi->raw_super->hot_ext_count;
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int total_count = cold_count + hot_count;
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int start, count;
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int i;
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if (set) {
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if (total_count == F2FS_MAX_EXTENSION)
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return -EINVAL;
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} else {
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if (!hot && !cold_count)
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return -EINVAL;
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if (hot && !hot_count)
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return -EINVAL;
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}
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if (hot) {
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start = cold_count;
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count = total_count;
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} else {
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start = 0;
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count = cold_count;
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}
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for (i = start; i < count; i++) {
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if (strcmp(name, extlist[i]))
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continue;
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if (set)
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return -EINVAL;
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memcpy(extlist[i], extlist[i + 1],
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F2FS_EXTENSION_LEN * (total_count - i - 1));
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memset(extlist[total_count - 1], 0, F2FS_EXTENSION_LEN);
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if (hot)
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sbi->raw_super->hot_ext_count = hot_count - 1;
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else
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sbi->raw_super->extension_count =
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cpu_to_le32(cold_count - 1);
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return 0;
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}
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if (!set)
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return -EINVAL;
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if (hot) {
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memcpy(extlist[count], name, strlen(name));
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sbi->raw_super->hot_ext_count = hot_count + 1;
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} else {
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char buf[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];
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memcpy(buf, &extlist[cold_count],
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F2FS_EXTENSION_LEN * hot_count);
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memset(extlist[cold_count], 0, F2FS_EXTENSION_LEN);
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memcpy(extlist[cold_count], name, strlen(name));
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memcpy(&extlist[cold_count + 1], buf,
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F2FS_EXTENSION_LEN * hot_count);
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sbi->raw_super->extension_count = cpu_to_le32(cold_count + 1);
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}
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return 0;
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}
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static void set_compress_new_inode(struct f2fs_sb_info *sbi, struct inode *dir,
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struct inode *inode, const unsigned char *name)
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{
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__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
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unsigned char (*noext)[F2FS_EXTENSION_LEN] =
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F2FS_OPTION(sbi).noextensions;
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unsigned char (*ext)[F2FS_EXTENSION_LEN] = F2FS_OPTION(sbi).extensions;
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unsigned char ext_cnt = F2FS_OPTION(sbi).compress_ext_cnt;
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unsigned char noext_cnt = F2FS_OPTION(sbi).nocompress_ext_cnt;
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int i, cold_count, hot_count;
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if (!f2fs_sb_has_compression(sbi))
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return;
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if (S_ISDIR(inode->i_mode))
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goto inherit_comp;
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/* This name comes only from normal files. */
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if (!name)
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return;
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/* Don't compress hot files. */
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f2fs_down_read(&sbi->sb_lock);
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cold_count = le32_to_cpu(sbi->raw_super->extension_count);
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hot_count = sbi->raw_super->hot_ext_count;
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for (i = cold_count; i < cold_count + hot_count; i++)
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if (is_temperature_extension(name, extlist[i]))
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break;
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f2fs_up_read(&sbi->sb_lock);
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if (i < (cold_count + hot_count))
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return;
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/* Don't compress unallowed extension. */
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for (i = 0; i < noext_cnt; i++)
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if (is_compress_extension(name, noext[i]))
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return;
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/* Compress wanting extension. */
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for (i = 0; i < ext_cnt; i++) {
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if (is_compress_extension(name, ext[i])) {
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set_compress_context(inode);
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return;
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}
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}
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inherit_comp:
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/* Inherit the {no-}compression flag in directory */
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if (F2FS_I(dir)->i_flags & F2FS_NOCOMP_FL) {
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F2FS_I(inode)->i_flags |= F2FS_NOCOMP_FL;
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f2fs_mark_inode_dirty_sync(inode, true);
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} else if (F2FS_I(dir)->i_flags & F2FS_COMPR_FL) {
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set_compress_context(inode);
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}
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}
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/*
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* Set file's temperature for hot/cold data separation
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*/
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static void set_file_temperature(struct f2fs_sb_info *sbi, struct inode *inode,
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const unsigned char *name)
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{
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__u8 (*extlist)[F2FS_EXTENSION_LEN] = sbi->raw_super->extension_list;
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int i, cold_count, hot_count;
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f2fs_down_read(&sbi->sb_lock);
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cold_count = le32_to_cpu(sbi->raw_super->extension_count);
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hot_count = sbi->raw_super->hot_ext_count;
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for (i = 0; i < cold_count + hot_count; i++)
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if (is_temperature_extension(name, extlist[i]))
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break;
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f2fs_up_read(&sbi->sb_lock);
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if (i == cold_count + hot_count)
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return;
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if (i < cold_count)
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file_set_cold(inode);
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else
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file_set_hot(inode);
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}
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static struct inode *f2fs_new_inode(struct mnt_idmap *idmap,
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struct inode *dir, umode_t mode,
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const char *name)
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{
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struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
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nid_t ino;
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struct inode *inode;
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bool nid_free = false;
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bool encrypt = false;
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int xattr_size = 0;
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int err;
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inode = new_inode(dir->i_sb);
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if (!inode)
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return ERR_PTR(-ENOMEM);
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if (!f2fs_alloc_nid(sbi, &ino)) {
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err = -ENOSPC;
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goto fail;
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}
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nid_free = true;
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inode_init_owner(idmap, inode, dir, mode);
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inode->i_ino = ino;
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inode->i_blocks = 0;
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simple_inode_init_ts(inode);
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F2FS_I(inode)->i_crtime = inode_get_mtime(inode);
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inode->i_generation = get_random_u32();
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if (S_ISDIR(inode->i_mode))
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F2FS_I(inode)->i_current_depth = 1;
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err = insert_inode_locked(inode);
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if (err) {
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err = -EINVAL;
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goto fail;
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}
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if (f2fs_sb_has_project_quota(sbi) &&
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(F2FS_I(dir)->i_flags & F2FS_PROJINHERIT_FL))
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F2FS_I(inode)->i_projid = F2FS_I(dir)->i_projid;
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else
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F2FS_I(inode)->i_projid = make_kprojid(&init_user_ns,
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F2FS_DEF_PROJID);
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err = fscrypt_prepare_new_inode(dir, inode, &encrypt);
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if (err)
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goto fail_drop;
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err = f2fs_dquot_initialize(inode);
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if (err)
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goto fail_drop;
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set_inode_flag(inode, FI_NEW_INODE);
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if (encrypt)
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f2fs_set_encrypted_inode(inode);
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if (f2fs_sb_has_extra_attr(sbi)) {
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set_inode_flag(inode, FI_EXTRA_ATTR);
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F2FS_I(inode)->i_extra_isize = F2FS_TOTAL_EXTRA_ATTR_SIZE;
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}
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if (test_opt(sbi, INLINE_XATTR))
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set_inode_flag(inode, FI_INLINE_XATTR);
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if (f2fs_may_inline_dentry(inode))
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set_inode_flag(inode, FI_INLINE_DENTRY);
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if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
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f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode));
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if (f2fs_has_inline_xattr(inode))
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xattr_size = F2FS_OPTION(sbi).inline_xattr_size;
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/* Otherwise, will be 0 */
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} else if (f2fs_has_inline_xattr(inode) ||
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f2fs_has_inline_dentry(inode)) {
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xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
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}
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F2FS_I(inode)->i_inline_xattr_size = xattr_size;
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F2FS_I(inode)->i_flags =
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f2fs_mask_flags(mode, F2FS_I(dir)->i_flags & F2FS_FL_INHERITED);
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if (S_ISDIR(inode->i_mode))
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F2FS_I(inode)->i_flags |= F2FS_INDEX_FL;
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if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL)
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set_inode_flag(inode, FI_PROJ_INHERIT);
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|
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/* Check compression first. */
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set_compress_new_inode(sbi, dir, inode, name);
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/* Should enable inline_data after compression set */
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if (test_opt(sbi, INLINE_DATA) && f2fs_may_inline_data(inode))
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set_inode_flag(inode, FI_INLINE_DATA);
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if (name && !test_opt(sbi, DISABLE_EXT_IDENTIFY))
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set_file_temperature(sbi, inode, name);
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stat_inc_inline_xattr(inode);
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stat_inc_inline_inode(inode);
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stat_inc_inline_dir(inode);
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|
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f2fs_set_inode_flags(inode);
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|
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f2fs_init_extent_tree(inode);
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|
|
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trace_f2fs_new_inode(inode, 0);
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return inode;
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|
|
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fail:
|
|
trace_f2fs_new_inode(inode, err);
|
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make_bad_inode(inode);
|
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if (nid_free)
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set_inode_flag(inode, FI_FREE_NID);
|
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iput(inode);
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return ERR_PTR(err);
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fail_drop:
|
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trace_f2fs_new_inode(inode, err);
|
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dquot_drop(inode);
|
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inode->i_flags |= S_NOQUOTA;
|
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if (nid_free)
|
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set_inode_flag(inode, FI_FREE_NID);
|
|
clear_nlink(inode);
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unlock_new_inode(inode);
|
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iput(inode);
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return ERR_PTR(err);
|
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}
|
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|
|
static int f2fs_create(struct mnt_idmap *idmap, struct inode *dir,
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struct dentry *dentry, umode_t mode, bool excl)
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{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
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struct inode *inode;
|
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nid_t ino = 0;
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
inode = f2fs_new_inode(idmap, dir, mode, dentry->d_name.name);
|
|
if (IS_ERR(inode))
|
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return PTR_ERR(inode);
|
|
|
|
inode->i_op = &f2fs_file_inode_operations;
|
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inode->i_fop = &f2fs_file_operations;
|
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inode->i_mapping->a_ops = &f2fs_dblock_aops;
|
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ino = inode->i_ino;
|
|
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_add_link(dentry, inode);
|
|
if (err)
|
|
goto out;
|
|
f2fs_unlock_op(sbi);
|
|
|
|
f2fs_alloc_nid_done(sbi, ino);
|
|
|
|
d_instantiate_new(dentry, inode);
|
|
|
|
if (IS_DIRSYNC(dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
return 0;
|
|
out:
|
|
f2fs_handle_failed_inode(inode);
|
|
return err;
|
|
}
|
|
|
|
static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
|
|
struct dentry *dentry)
|
|
{
|
|
struct inode *inode = d_inode(old_dentry);
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
err = fscrypt_prepare_link(old_dentry, dir, dentry);
|
|
if (err)
|
|
return err;
|
|
|
|
if (is_inode_flag_set(dir, FI_PROJ_INHERIT) &&
|
|
(!projid_eq(F2FS_I(dir)->i_projid,
|
|
F2FS_I(old_dentry->d_inode)->i_projid)))
|
|
return -EXDEV;
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
|
|
inode_set_ctime_current(inode);
|
|
ihold(inode);
|
|
|
|
set_inode_flag(inode, FI_INC_LINK);
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_add_link(dentry, inode);
|
|
if (err)
|
|
goto out;
|
|
f2fs_unlock_op(sbi);
|
|
|
|
d_instantiate(dentry, inode);
|
|
|
|
if (IS_DIRSYNC(dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
return 0;
|
|
out:
|
|
clear_inode_flag(inode, FI_INC_LINK);
|
|
iput(inode);
|
|
f2fs_unlock_op(sbi);
|
|
return err;
|
|
}
|
|
|
|
struct dentry *f2fs_get_parent(struct dentry *child)
|
|
{
|
|
struct page *page;
|
|
unsigned long ino = f2fs_inode_by_name(d_inode(child), &dotdot_name, &page);
|
|
|
|
if (!ino) {
|
|
if (IS_ERR(page))
|
|
return ERR_CAST(page);
|
|
return ERR_PTR(-ENOENT);
|
|
}
|
|
return d_obtain_alias(f2fs_iget(child->d_sb, ino));
|
|
}
|
|
|
|
static int __recover_dot_dentries(struct inode *dir, nid_t pino)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
struct qstr dot = QSTR_INIT(".", 1);
|
|
struct f2fs_dir_entry *de;
|
|
struct page *page;
|
|
int err = 0;
|
|
|
|
if (f2fs_readonly(sbi->sb)) {
|
|
f2fs_info(sbi, "skip recovering inline_dots inode (ino:%lu, pino:%u) in readonly mountpoint",
|
|
dir->i_ino, pino);
|
|
return 0;
|
|
}
|
|
|
|
if (!S_ISDIR(dir->i_mode)) {
|
|
f2fs_err(sbi, "inconsistent inode status, skip recovering inline_dots inode (ino:%lu, i_mode:%u, pino:%u)",
|
|
dir->i_ino, dir->i_mode, pino);
|
|
set_sbi_flag(sbi, SBI_NEED_FSCK);
|
|
return -ENOTDIR;
|
|
}
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
|
|
f2fs_lock_op(sbi);
|
|
|
|
de = f2fs_find_entry(dir, &dot, &page);
|
|
if (de) {
|
|
f2fs_put_page(page, 0);
|
|
} else if (IS_ERR(page)) {
|
|
err = PTR_ERR(page);
|
|
goto out;
|
|
} else {
|
|
err = f2fs_do_add_link(dir, &dot, NULL, dir->i_ino, S_IFDIR);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
|
|
de = f2fs_find_entry(dir, &dotdot_name, &page);
|
|
if (de)
|
|
f2fs_put_page(page, 0);
|
|
else if (IS_ERR(page))
|
|
err = PTR_ERR(page);
|
|
else
|
|
err = f2fs_do_add_link(dir, &dotdot_name, NULL, pino, S_IFDIR);
|
|
out:
|
|
if (!err)
|
|
clear_inode_flag(dir, FI_INLINE_DOTS);
|
|
|
|
f2fs_unlock_op(sbi);
|
|
return err;
|
|
}
|
|
|
|
static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry,
|
|
unsigned int flags)
|
|
{
|
|
struct inode *inode = NULL;
|
|
struct f2fs_dir_entry *de;
|
|
struct page *page;
|
|
struct dentry *new;
|
|
nid_t ino = -1;
|
|
int err = 0;
|
|
unsigned int root_ino = F2FS_ROOT_INO(F2FS_I_SB(dir));
|
|
struct f2fs_filename fname;
|
|
|
|
trace_f2fs_lookup_start(dir, dentry, flags);
|
|
|
|
if (dentry->d_name.len > F2FS_NAME_LEN) {
|
|
err = -ENAMETOOLONG;
|
|
goto out;
|
|
}
|
|
|
|
err = f2fs_prepare_lookup(dir, dentry, &fname);
|
|
generic_set_encrypted_ci_d_ops(dentry);
|
|
if (err == -ENOENT)
|
|
goto out_splice;
|
|
if (err)
|
|
goto out;
|
|
de = __f2fs_find_entry(dir, &fname, &page);
|
|
f2fs_free_filename(&fname);
|
|
|
|
if (!de) {
|
|
if (IS_ERR(page)) {
|
|
err = PTR_ERR(page);
|
|
goto out;
|
|
}
|
|
err = -ENOENT;
|
|
goto out_splice;
|
|
}
|
|
|
|
ino = le32_to_cpu(de->ino);
|
|
f2fs_put_page(page, 0);
|
|
|
|
inode = f2fs_iget(dir->i_sb, ino);
|
|
if (IS_ERR(inode)) {
|
|
err = PTR_ERR(inode);
|
|
goto out;
|
|
}
|
|
|
|
if ((dir->i_ino == root_ino) && f2fs_has_inline_dots(dir)) {
|
|
err = __recover_dot_dentries(dir, root_ino);
|
|
if (err)
|
|
goto out_iput;
|
|
}
|
|
|
|
if (f2fs_has_inline_dots(inode)) {
|
|
err = __recover_dot_dentries(inode, dir->i_ino);
|
|
if (err)
|
|
goto out_iput;
|
|
}
|
|
if (IS_ENCRYPTED(dir) &&
|
|
(S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
|
|
!fscrypt_has_permitted_context(dir, inode)) {
|
|
f2fs_warn(F2FS_I_SB(inode), "Inconsistent encryption contexts: %lu/%lu",
|
|
dir->i_ino, inode->i_ino);
|
|
err = -EPERM;
|
|
goto out_iput;
|
|
}
|
|
out_splice:
|
|
#if IS_ENABLED(CONFIG_UNICODE)
|
|
if (!inode && IS_CASEFOLDED(dir)) {
|
|
/* Eventually we want to call d_add_ci(dentry, NULL)
|
|
* for negative dentries in the encoding case as
|
|
* well. For now, prevent the negative dentry
|
|
* from being cached.
|
|
*/
|
|
trace_f2fs_lookup_end(dir, dentry, ino, err);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
new = d_splice_alias(inode, dentry);
|
|
trace_f2fs_lookup_end(dir, !IS_ERR_OR_NULL(new) ? new : dentry,
|
|
ino, IS_ERR(new) ? PTR_ERR(new) : err);
|
|
return new;
|
|
out_iput:
|
|
iput(inode);
|
|
out:
|
|
trace_f2fs_lookup_end(dir, dentry, ino, err);
|
|
return ERR_PTR(err);
|
|
}
|
|
|
|
static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
struct inode *inode = d_inode(dentry);
|
|
struct f2fs_dir_entry *de;
|
|
struct page *page;
|
|
int err;
|
|
|
|
trace_f2fs_unlink_enter(dir, dentry);
|
|
|
|
if (unlikely(f2fs_cp_error(sbi))) {
|
|
err = -EIO;
|
|
goto fail;
|
|
}
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
goto fail;
|
|
err = f2fs_dquot_initialize(inode);
|
|
if (err)
|
|
goto fail;
|
|
|
|
de = f2fs_find_entry(dir, &dentry->d_name, &page);
|
|
if (!de) {
|
|
if (IS_ERR(page))
|
|
err = PTR_ERR(page);
|
|
goto fail;
|
|
}
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_acquire_orphan_inode(sbi);
|
|
if (err) {
|
|
f2fs_unlock_op(sbi);
|
|
f2fs_put_page(page, 0);
|
|
goto fail;
|
|
}
|
|
f2fs_delete_entry(de, page, dir, inode);
|
|
f2fs_unlock_op(sbi);
|
|
|
|
#if IS_ENABLED(CONFIG_UNICODE)
|
|
/* VFS negative dentries are incompatible with Encoding and
|
|
* Case-insensitiveness. Eventually we'll want avoid
|
|
* invalidating the dentries here, alongside with returning the
|
|
* negative dentries at f2fs_lookup(), when it is better
|
|
* supported by the VFS for the CI case.
|
|
*/
|
|
if (IS_CASEFOLDED(dir))
|
|
d_invalidate(dentry);
|
|
#endif
|
|
if (IS_DIRSYNC(dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
fail:
|
|
trace_f2fs_unlink_exit(inode, err);
|
|
return err;
|
|
}
|
|
|
|
static const char *f2fs_get_link(struct dentry *dentry,
|
|
struct inode *inode,
|
|
struct delayed_call *done)
|
|
{
|
|
const char *link = page_get_link(dentry, inode, done);
|
|
|
|
if (!IS_ERR(link) && !*link) {
|
|
/* this is broken symlink case */
|
|
do_delayed_call(done);
|
|
clear_delayed_call(done);
|
|
link = ERR_PTR(-ENOENT);
|
|
}
|
|
return link;
|
|
}
|
|
|
|
static int f2fs_symlink(struct mnt_idmap *idmap, struct inode *dir,
|
|
struct dentry *dentry, const char *symname)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
struct inode *inode;
|
|
size_t len = strlen(symname);
|
|
struct fscrypt_str disk_link;
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
err = fscrypt_prepare_symlink(dir, symname, len, dir->i_sb->s_blocksize,
|
|
&disk_link);
|
|
if (err)
|
|
return err;
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
inode = f2fs_new_inode(idmap, dir, S_IFLNK | S_IRWXUGO, NULL);
|
|
if (IS_ERR(inode))
|
|
return PTR_ERR(inode);
|
|
|
|
if (IS_ENCRYPTED(inode))
|
|
inode->i_op = &f2fs_encrypted_symlink_inode_operations;
|
|
else
|
|
inode->i_op = &f2fs_symlink_inode_operations;
|
|
inode_nohighmem(inode);
|
|
inode->i_mapping->a_ops = &f2fs_dblock_aops;
|
|
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_add_link(dentry, inode);
|
|
if (err)
|
|
goto out_f2fs_handle_failed_inode;
|
|
f2fs_unlock_op(sbi);
|
|
f2fs_alloc_nid_done(sbi, inode->i_ino);
|
|
|
|
err = fscrypt_encrypt_symlink(inode, symname, len, &disk_link);
|
|
if (err)
|
|
goto err_out;
|
|
|
|
err = page_symlink(inode, disk_link.name, disk_link.len);
|
|
|
|
err_out:
|
|
d_instantiate_new(dentry, inode);
|
|
|
|
/*
|
|
* Let's flush symlink data in order to avoid broken symlink as much as
|
|
* possible. Nevertheless, fsyncing is the best way, but there is no
|
|
* way to get a file descriptor in order to flush that.
|
|
*
|
|
* Note that, it needs to do dir->fsync to make this recoverable.
|
|
* If the symlink path is stored into inline_data, there is no
|
|
* performance regression.
|
|
*/
|
|
if (!err) {
|
|
filemap_write_and_wait_range(inode->i_mapping, 0,
|
|
disk_link.len - 1);
|
|
|
|
if (IS_DIRSYNC(dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
} else {
|
|
f2fs_unlink(dir, dentry);
|
|
}
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
goto out_free_encrypted_link;
|
|
|
|
out_f2fs_handle_failed_inode:
|
|
f2fs_handle_failed_inode(inode);
|
|
out_free_encrypted_link:
|
|
if (disk_link.name != (unsigned char *)symname)
|
|
kfree(disk_link.name);
|
|
return err;
|
|
}
|
|
|
|
static int f2fs_mkdir(struct mnt_idmap *idmap, struct inode *dir,
|
|
struct dentry *dentry, umode_t mode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
struct inode *inode;
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
inode = f2fs_new_inode(idmap, dir, S_IFDIR | mode, NULL);
|
|
if (IS_ERR(inode))
|
|
return PTR_ERR(inode);
|
|
|
|
inode->i_op = &f2fs_dir_inode_operations;
|
|
inode->i_fop = &f2fs_dir_operations;
|
|
inode->i_mapping->a_ops = &f2fs_dblock_aops;
|
|
mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
|
|
|
|
set_inode_flag(inode, FI_INC_LINK);
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_add_link(dentry, inode);
|
|
if (err)
|
|
goto out_fail;
|
|
f2fs_unlock_op(sbi);
|
|
|
|
f2fs_alloc_nid_done(sbi, inode->i_ino);
|
|
|
|
d_instantiate_new(dentry, inode);
|
|
|
|
if (IS_DIRSYNC(dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
return 0;
|
|
|
|
out_fail:
|
|
clear_inode_flag(inode, FI_INC_LINK);
|
|
f2fs_handle_failed_inode(inode);
|
|
return err;
|
|
}
|
|
|
|
static int f2fs_rmdir(struct inode *dir, struct dentry *dentry)
|
|
{
|
|
struct inode *inode = d_inode(dentry);
|
|
|
|
if (f2fs_empty_dir(inode))
|
|
return f2fs_unlink(dir, dentry);
|
|
return -ENOTEMPTY;
|
|
}
|
|
|
|
static int f2fs_mknod(struct mnt_idmap *idmap, struct inode *dir,
|
|
struct dentry *dentry, umode_t mode, dev_t rdev)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
struct inode *inode;
|
|
int err = 0;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
inode = f2fs_new_inode(idmap, dir, mode, NULL);
|
|
if (IS_ERR(inode))
|
|
return PTR_ERR(inode);
|
|
|
|
init_special_inode(inode, inode->i_mode, rdev);
|
|
inode->i_op = &f2fs_special_inode_operations;
|
|
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_add_link(dentry, inode);
|
|
if (err)
|
|
goto out;
|
|
f2fs_unlock_op(sbi);
|
|
|
|
f2fs_alloc_nid_done(sbi, inode->i_ino);
|
|
|
|
d_instantiate_new(dentry, inode);
|
|
|
|
if (IS_DIRSYNC(dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
return 0;
|
|
out:
|
|
f2fs_handle_failed_inode(inode);
|
|
return err;
|
|
}
|
|
|
|
static int __f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
|
|
struct file *file, umode_t mode, bool is_whiteout,
|
|
struct inode **new_inode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
struct inode *inode;
|
|
int err;
|
|
|
|
err = f2fs_dquot_initialize(dir);
|
|
if (err)
|
|
return err;
|
|
|
|
inode = f2fs_new_inode(idmap, dir, mode, NULL);
|
|
if (IS_ERR(inode))
|
|
return PTR_ERR(inode);
|
|
|
|
if (is_whiteout) {
|
|
init_special_inode(inode, inode->i_mode, WHITEOUT_DEV);
|
|
inode->i_op = &f2fs_special_inode_operations;
|
|
} else {
|
|
inode->i_op = &f2fs_file_inode_operations;
|
|
inode->i_fop = &f2fs_file_operations;
|
|
inode->i_mapping->a_ops = &f2fs_dblock_aops;
|
|
}
|
|
|
|
f2fs_lock_op(sbi);
|
|
err = f2fs_acquire_orphan_inode(sbi);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = f2fs_do_tmpfile(inode, dir);
|
|
if (err)
|
|
goto release_out;
|
|
|
|
/*
|
|
* add this non-linked tmpfile to orphan list, in this way we could
|
|
* remove all unused data of tmpfile after abnormal power-off.
|
|
*/
|
|
f2fs_add_orphan_inode(inode);
|
|
f2fs_alloc_nid_done(sbi, inode->i_ino);
|
|
|
|
if (is_whiteout) {
|
|
f2fs_i_links_write(inode, false);
|
|
|
|
spin_lock(&inode->i_lock);
|
|
inode->i_state |= I_LINKABLE;
|
|
spin_unlock(&inode->i_lock);
|
|
} else {
|
|
if (file)
|
|
d_tmpfile(file, inode);
|
|
else
|
|
f2fs_i_links_write(inode, false);
|
|
}
|
|
/* link_count was changed by d_tmpfile as well. */
|
|
f2fs_unlock_op(sbi);
|
|
unlock_new_inode(inode);
|
|
|
|
if (new_inode)
|
|
*new_inode = inode;
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
return 0;
|
|
|
|
release_out:
|
|
f2fs_release_orphan_inode(sbi);
|
|
out:
|
|
f2fs_handle_failed_inode(inode);
|
|
return err;
|
|
}
|
|
|
|
static int f2fs_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
|
|
struct file *file, umode_t mode)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
err = __f2fs_tmpfile(idmap, dir, file, mode, false, NULL);
|
|
|
|
return finish_open_simple(file, err);
|
|
}
|
|
|
|
static int f2fs_create_whiteout(struct mnt_idmap *idmap,
|
|
struct inode *dir, struct inode **whiteout)
|
|
{
|
|
return __f2fs_tmpfile(idmap, dir, NULL,
|
|
S_IFCHR | WHITEOUT_MODE, true, whiteout);
|
|
}
|
|
|
|
int f2fs_get_tmpfile(struct mnt_idmap *idmap, struct inode *dir,
|
|
struct inode **new_inode)
|
|
{
|
|
return __f2fs_tmpfile(idmap, dir, NULL, S_IFREG, false, new_inode);
|
|
}
|
|
|
|
static int f2fs_rename(struct mnt_idmap *idmap, struct inode *old_dir,
|
|
struct dentry *old_dentry, struct inode *new_dir,
|
|
struct dentry *new_dentry, unsigned int flags)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
|
|
struct inode *old_inode = d_inode(old_dentry);
|
|
struct inode *new_inode = d_inode(new_dentry);
|
|
struct inode *whiteout = NULL;
|
|
struct page *old_dir_page = NULL;
|
|
struct page *old_page, *new_page = NULL;
|
|
struct f2fs_dir_entry *old_dir_entry = NULL;
|
|
struct f2fs_dir_entry *old_entry;
|
|
struct f2fs_dir_entry *new_entry;
|
|
bool old_is_dir = S_ISDIR(old_inode->i_mode);
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
if (is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
|
|
(!projid_eq(F2FS_I(new_dir)->i_projid,
|
|
F2FS_I(old_dentry->d_inode)->i_projid)))
|
|
return -EXDEV;
|
|
|
|
/*
|
|
* If new_inode is null, the below renaming flow will
|
|
* add a link in old_dir which can convert inline_dir.
|
|
* After then, if we failed to get the entry due to other
|
|
* reasons like ENOMEM, we had to remove the new entry.
|
|
* Instead of adding such the error handling routine, let's
|
|
* simply convert first here.
|
|
*/
|
|
if (old_dir == new_dir && !new_inode) {
|
|
err = f2fs_try_convert_inline_dir(old_dir, new_dentry);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
if (flags & RENAME_WHITEOUT) {
|
|
err = f2fs_create_whiteout(idmap, old_dir, &whiteout);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
err = f2fs_dquot_initialize(old_dir);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = f2fs_dquot_initialize(new_dir);
|
|
if (err)
|
|
goto out;
|
|
|
|
if (new_inode) {
|
|
err = f2fs_dquot_initialize(new_inode);
|
|
if (err)
|
|
goto out;
|
|
}
|
|
|
|
err = -ENOENT;
|
|
old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
|
|
if (!old_entry) {
|
|
if (IS_ERR(old_page))
|
|
err = PTR_ERR(old_page);
|
|
goto out;
|
|
}
|
|
|
|
if (old_is_dir && old_dir != new_dir) {
|
|
old_dir_entry = f2fs_parent_dir(old_inode, &old_dir_page);
|
|
if (!old_dir_entry) {
|
|
if (IS_ERR(old_dir_page))
|
|
err = PTR_ERR(old_dir_page);
|
|
goto out_old;
|
|
}
|
|
}
|
|
|
|
if (new_inode) {
|
|
|
|
err = -ENOTEMPTY;
|
|
if (old_is_dir && !f2fs_empty_dir(new_inode))
|
|
goto out_dir;
|
|
|
|
err = -ENOENT;
|
|
new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name,
|
|
&new_page);
|
|
if (!new_entry) {
|
|
if (IS_ERR(new_page))
|
|
err = PTR_ERR(new_page);
|
|
goto out_dir;
|
|
}
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
|
|
f2fs_lock_op(sbi);
|
|
|
|
err = f2fs_acquire_orphan_inode(sbi);
|
|
if (err)
|
|
goto put_out_dir;
|
|
|
|
f2fs_set_link(new_dir, new_entry, new_page, old_inode);
|
|
new_page = NULL;
|
|
|
|
inode_set_ctime_current(new_inode);
|
|
f2fs_down_write(&F2FS_I(new_inode)->i_sem);
|
|
if (old_is_dir)
|
|
f2fs_i_links_write(new_inode, false);
|
|
f2fs_i_links_write(new_inode, false);
|
|
f2fs_up_write(&F2FS_I(new_inode)->i_sem);
|
|
|
|
if (!new_inode->i_nlink)
|
|
f2fs_add_orphan_inode(new_inode);
|
|
else
|
|
f2fs_release_orphan_inode(sbi);
|
|
} else {
|
|
f2fs_balance_fs(sbi, true);
|
|
|
|
f2fs_lock_op(sbi);
|
|
|
|
err = f2fs_add_link(new_dentry, old_inode);
|
|
if (err) {
|
|
f2fs_unlock_op(sbi);
|
|
goto out_dir;
|
|
}
|
|
|
|
if (old_is_dir)
|
|
f2fs_i_links_write(new_dir, true);
|
|
}
|
|
|
|
f2fs_down_write(&F2FS_I(old_inode)->i_sem);
|
|
if (!old_is_dir || whiteout)
|
|
file_lost_pino(old_inode);
|
|
else
|
|
/* adjust dir's i_pino to pass fsck check */
|
|
f2fs_i_pino_write(old_inode, new_dir->i_ino);
|
|
f2fs_up_write(&F2FS_I(old_inode)->i_sem);
|
|
|
|
inode_set_ctime_current(old_inode);
|
|
f2fs_mark_inode_dirty_sync(old_inode, false);
|
|
|
|
f2fs_delete_entry(old_entry, old_page, old_dir, NULL);
|
|
old_page = NULL;
|
|
|
|
if (whiteout) {
|
|
set_inode_flag(whiteout, FI_INC_LINK);
|
|
err = f2fs_add_link(old_dentry, whiteout);
|
|
if (err)
|
|
goto put_out_dir;
|
|
|
|
spin_lock(&whiteout->i_lock);
|
|
whiteout->i_state &= ~I_LINKABLE;
|
|
spin_unlock(&whiteout->i_lock);
|
|
|
|
iput(whiteout);
|
|
}
|
|
|
|
if (old_is_dir) {
|
|
if (old_dir_entry)
|
|
f2fs_set_link(old_inode, old_dir_entry,
|
|
old_dir_page, new_dir);
|
|
else
|
|
f2fs_put_page(old_dir_page, 0);
|
|
f2fs_i_links_write(old_dir, false);
|
|
}
|
|
if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
|
|
f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
|
|
if (S_ISDIR(old_inode->i_mode))
|
|
f2fs_add_ino_entry(sbi, old_inode->i_ino,
|
|
TRANS_DIR_INO);
|
|
}
|
|
|
|
f2fs_unlock_op(sbi);
|
|
|
|
if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
|
|
f2fs_update_time(sbi, REQ_TIME);
|
|
return 0;
|
|
|
|
put_out_dir:
|
|
f2fs_unlock_op(sbi);
|
|
f2fs_put_page(new_page, 0);
|
|
out_dir:
|
|
if (old_dir_entry)
|
|
f2fs_put_page(old_dir_page, 0);
|
|
out_old:
|
|
f2fs_put_page(old_page, 0);
|
|
out:
|
|
iput(whiteout);
|
|
return err;
|
|
}
|
|
|
|
static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
|
|
struct inode *new_dir, struct dentry *new_dentry)
|
|
{
|
|
struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir);
|
|
struct inode *old_inode = d_inode(old_dentry);
|
|
struct inode *new_inode = d_inode(new_dentry);
|
|
struct page *old_dir_page, *new_dir_page;
|
|
struct page *old_page, *new_page;
|
|
struct f2fs_dir_entry *old_dir_entry = NULL, *new_dir_entry = NULL;
|
|
struct f2fs_dir_entry *old_entry, *new_entry;
|
|
int old_nlink = 0, new_nlink = 0;
|
|
int err;
|
|
|
|
if (unlikely(f2fs_cp_error(sbi)))
|
|
return -EIO;
|
|
if (!f2fs_is_checkpoint_ready(sbi))
|
|
return -ENOSPC;
|
|
|
|
if ((is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
|
|
!projid_eq(F2FS_I(new_dir)->i_projid,
|
|
F2FS_I(old_dentry->d_inode)->i_projid)) ||
|
|
(is_inode_flag_set(new_dir, FI_PROJ_INHERIT) &&
|
|
!projid_eq(F2FS_I(old_dir)->i_projid,
|
|
F2FS_I(new_dentry->d_inode)->i_projid)))
|
|
return -EXDEV;
|
|
|
|
err = f2fs_dquot_initialize(old_dir);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = f2fs_dquot_initialize(new_dir);
|
|
if (err)
|
|
goto out;
|
|
|
|
err = -ENOENT;
|
|
old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
|
|
if (!old_entry) {
|
|
if (IS_ERR(old_page))
|
|
err = PTR_ERR(old_page);
|
|
goto out;
|
|
}
|
|
|
|
new_entry = f2fs_find_entry(new_dir, &new_dentry->d_name, &new_page);
|
|
if (!new_entry) {
|
|
if (IS_ERR(new_page))
|
|
err = PTR_ERR(new_page);
|
|
goto out_old;
|
|
}
|
|
|
|
/* prepare for updating ".." directory entry info later */
|
|
if (old_dir != new_dir) {
|
|
if (S_ISDIR(old_inode->i_mode)) {
|
|
old_dir_entry = f2fs_parent_dir(old_inode,
|
|
&old_dir_page);
|
|
if (!old_dir_entry) {
|
|
if (IS_ERR(old_dir_page))
|
|
err = PTR_ERR(old_dir_page);
|
|
goto out_new;
|
|
}
|
|
}
|
|
|
|
if (S_ISDIR(new_inode->i_mode)) {
|
|
new_dir_entry = f2fs_parent_dir(new_inode,
|
|
&new_dir_page);
|
|
if (!new_dir_entry) {
|
|
if (IS_ERR(new_dir_page))
|
|
err = PTR_ERR(new_dir_page);
|
|
goto out_old_dir;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If cross rename between file and directory those are not
|
|
* in the same directory, we will inc nlink of file's parent
|
|
* later, so we should check upper boundary of its nlink.
|
|
*/
|
|
if ((!old_dir_entry || !new_dir_entry) &&
|
|
old_dir_entry != new_dir_entry) {
|
|
old_nlink = old_dir_entry ? -1 : 1;
|
|
new_nlink = -old_nlink;
|
|
err = -EMLINK;
|
|
if ((old_nlink > 0 && old_dir->i_nlink >= F2FS_LINK_MAX) ||
|
|
(new_nlink > 0 && new_dir->i_nlink >= F2FS_LINK_MAX))
|
|
goto out_new_dir;
|
|
}
|
|
|
|
f2fs_balance_fs(sbi, true);
|
|
|
|
f2fs_lock_op(sbi);
|
|
|
|
/* update ".." directory entry info of old dentry */
|
|
if (old_dir_entry)
|
|
f2fs_set_link(old_inode, old_dir_entry, old_dir_page, new_dir);
|
|
|
|
/* update ".." directory entry info of new dentry */
|
|
if (new_dir_entry)
|
|
f2fs_set_link(new_inode, new_dir_entry, new_dir_page, old_dir);
|
|
|
|
/* update directory entry info of old dir inode */
|
|
f2fs_set_link(old_dir, old_entry, old_page, new_inode);
|
|
|
|
f2fs_down_write(&F2FS_I(old_inode)->i_sem);
|
|
if (!old_dir_entry)
|
|
file_lost_pino(old_inode);
|
|
else
|
|
/* adjust dir's i_pino to pass fsck check */
|
|
f2fs_i_pino_write(old_inode, new_dir->i_ino);
|
|
f2fs_up_write(&F2FS_I(old_inode)->i_sem);
|
|
|
|
inode_set_ctime_current(old_dir);
|
|
if (old_nlink) {
|
|
f2fs_down_write(&F2FS_I(old_dir)->i_sem);
|
|
f2fs_i_links_write(old_dir, old_nlink > 0);
|
|
f2fs_up_write(&F2FS_I(old_dir)->i_sem);
|
|
}
|
|
f2fs_mark_inode_dirty_sync(old_dir, false);
|
|
|
|
/* update directory entry info of new dir inode */
|
|
f2fs_set_link(new_dir, new_entry, new_page, old_inode);
|
|
|
|
f2fs_down_write(&F2FS_I(new_inode)->i_sem);
|
|
if (!new_dir_entry)
|
|
file_lost_pino(new_inode);
|
|
else
|
|
/* adjust dir's i_pino to pass fsck check */
|
|
f2fs_i_pino_write(new_inode, old_dir->i_ino);
|
|
f2fs_up_write(&F2FS_I(new_inode)->i_sem);
|
|
|
|
inode_set_ctime_current(new_dir);
|
|
if (new_nlink) {
|
|
f2fs_down_write(&F2FS_I(new_dir)->i_sem);
|
|
f2fs_i_links_write(new_dir, new_nlink > 0);
|
|
f2fs_up_write(&F2FS_I(new_dir)->i_sem);
|
|
}
|
|
f2fs_mark_inode_dirty_sync(new_dir, false);
|
|
|
|
if (F2FS_OPTION(sbi).fsync_mode == FSYNC_MODE_STRICT) {
|
|
f2fs_add_ino_entry(sbi, old_dir->i_ino, TRANS_DIR_INO);
|
|
f2fs_add_ino_entry(sbi, new_dir->i_ino, TRANS_DIR_INO);
|
|
}
|
|
|
|
f2fs_unlock_op(sbi);
|
|
|
|
if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir))
|
|
f2fs_sync_fs(sbi->sb, 1);
|
|
|
|
f2fs_update_time(sbi, REQ_TIME);
|
|
return 0;
|
|
out_new_dir:
|
|
if (new_dir_entry) {
|
|
f2fs_put_page(new_dir_page, 0);
|
|
}
|
|
out_old_dir:
|
|
if (old_dir_entry) {
|
|
f2fs_put_page(old_dir_page, 0);
|
|
}
|
|
out_new:
|
|
f2fs_put_page(new_page, 0);
|
|
out_old:
|
|
f2fs_put_page(old_page, 0);
|
|
out:
|
|
return err;
|
|
}
|
|
|
|
static int f2fs_rename2(struct mnt_idmap *idmap,
|
|
struct inode *old_dir, struct dentry *old_dentry,
|
|
struct inode *new_dir, struct dentry *new_dentry,
|
|
unsigned int flags)
|
|
{
|
|
int err;
|
|
|
|
if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
|
|
return -EINVAL;
|
|
|
|
trace_f2fs_rename_start(old_dir, old_dentry, new_dir, new_dentry,
|
|
flags);
|
|
|
|
err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
|
|
flags);
|
|
if (err)
|
|
return err;
|
|
|
|
if (flags & RENAME_EXCHANGE)
|
|
err = f2fs_cross_rename(old_dir, old_dentry,
|
|
new_dir, new_dentry);
|
|
else
|
|
/*
|
|
* VFS has already handled the new dentry existence case,
|
|
* here, we just deal with "RENAME_NOREPLACE" as regular rename.
|
|
*/
|
|
err = f2fs_rename(idmap, old_dir, old_dentry,
|
|
new_dir, new_dentry, flags);
|
|
|
|
trace_f2fs_rename_end(old_dentry, new_dentry, flags, err);
|
|
return err;
|
|
}
|
|
|
|
static const char *f2fs_encrypted_get_link(struct dentry *dentry,
|
|
struct inode *inode,
|
|
struct delayed_call *done)
|
|
{
|
|
struct page *page;
|
|
const char *target;
|
|
|
|
if (!dentry)
|
|
return ERR_PTR(-ECHILD);
|
|
|
|
page = read_mapping_page(inode->i_mapping, 0, NULL);
|
|
if (IS_ERR(page))
|
|
return ERR_CAST(page);
|
|
|
|
target = fscrypt_get_symlink(inode, page_address(page),
|
|
inode->i_sb->s_blocksize, done);
|
|
put_page(page);
|
|
return target;
|
|
}
|
|
|
|
static int f2fs_encrypted_symlink_getattr(struct mnt_idmap *idmap,
|
|
const struct path *path,
|
|
struct kstat *stat, u32 request_mask,
|
|
unsigned int query_flags)
|
|
{
|
|
f2fs_getattr(idmap, path, stat, request_mask, query_flags);
|
|
|
|
return fscrypt_symlink_getattr(path, stat);
|
|
}
|
|
|
|
const struct inode_operations f2fs_encrypted_symlink_inode_operations = {
|
|
.get_link = f2fs_encrypted_get_link,
|
|
.getattr = f2fs_encrypted_symlink_getattr,
|
|
.setattr = f2fs_setattr,
|
|
.listxattr = f2fs_listxattr,
|
|
};
|
|
|
|
const struct inode_operations f2fs_dir_inode_operations = {
|
|
.create = f2fs_create,
|
|
.lookup = f2fs_lookup,
|
|
.link = f2fs_link,
|
|
.unlink = f2fs_unlink,
|
|
.symlink = f2fs_symlink,
|
|
.mkdir = f2fs_mkdir,
|
|
.rmdir = f2fs_rmdir,
|
|
.mknod = f2fs_mknod,
|
|
.rename = f2fs_rename2,
|
|
.tmpfile = f2fs_tmpfile,
|
|
.getattr = f2fs_getattr,
|
|
.setattr = f2fs_setattr,
|
|
.get_inode_acl = f2fs_get_acl,
|
|
.set_acl = f2fs_set_acl,
|
|
.listxattr = f2fs_listxattr,
|
|
.fiemap = f2fs_fiemap,
|
|
.fileattr_get = f2fs_fileattr_get,
|
|
.fileattr_set = f2fs_fileattr_set,
|
|
};
|
|
|
|
const struct inode_operations f2fs_symlink_inode_operations = {
|
|
.get_link = f2fs_get_link,
|
|
.getattr = f2fs_getattr,
|
|
.setattr = f2fs_setattr,
|
|
.listxattr = f2fs_listxattr,
|
|
};
|
|
|
|
const struct inode_operations f2fs_special_inode_operations = {
|
|
.getattr = f2fs_getattr,
|
|
.setattr = f2fs_setattr,
|
|
.get_inode_acl = f2fs_get_acl,
|
|
.set_acl = f2fs_set_acl,
|
|
.listxattr = f2fs_listxattr,
|
|
};
|