98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 1) // SPDX-License-Identifier: GPL-2.0-or-later
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 2) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 3) * Copyright (C) 2012-2013 Samsung Electronics Co., Ltd.
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 4) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 5)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 6) #include <linux/slab.h>
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 7) #include <linux/compat.h>
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 8) #include <linux/cred.h>
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 9) #include <linux/buffer_head.h>
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 10) #include <linux/blkdev.h>
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 11)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 12) #include "exfat_raw.h"
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 13) #include "exfat_fs.h"
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 14)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 15) static int exfat_cont_expand(struct inode *inode, loff_t size)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 16) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 17) struct address_space *mapping = inode->i_mapping;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 18) loff_t start = i_size_read(inode), count = size - i_size_read(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 19) int err, err2;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 20)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 21) err = generic_cont_expand_simple(inode, size);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 22) if (err)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 23) return err;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 24)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 25) inode->i_ctime = inode->i_mtime = current_time(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 26) mark_inode_dirty(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 27)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 28) if (!IS_SYNC(inode))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 29) return 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 30)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 31) err = filemap_fdatawrite_range(mapping, start, start + count - 1);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 32) err2 = sync_mapping_buffers(mapping);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 33) if (!err)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 34) err = err2;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 35) err2 = write_inode_now(inode, 1);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 36) if (!err)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 37) err = err2;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 38) if (err)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 39) return err;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 40)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 41) return filemap_fdatawait_range(mapping, start, start + count - 1);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 42) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 43)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 44) static bool exfat_allow_set_time(struct exfat_sb_info *sbi, struct inode *inode)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 45) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 46) mode_t allow_utime = sbi->options.allow_utime;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 47)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 48) if (!uid_eq(current_fsuid(), inode->i_uid)) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 49) if (in_group_p(inode->i_gid))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 50) allow_utime >>= 3;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 51) if (allow_utime & MAY_WRITE)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 52) return true;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 53) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 54)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 55) /* use a default check */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 56) return false;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 57) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 58)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 59) static int exfat_sanitize_mode(const struct exfat_sb_info *sbi,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 60) struct inode *inode, umode_t *mode_ptr)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 61) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 62) mode_t i_mode, mask, perm;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 63)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 64) i_mode = inode->i_mode;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 65)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 66) mask = (S_ISREG(i_mode) || S_ISLNK(i_mode)) ?
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 67) sbi->options.fs_fmask : sbi->options.fs_dmask;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 68) perm = *mode_ptr & ~(S_IFMT | mask);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 69)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 70) /* Of the r and x bits, all (subject to umask) must be present.*/
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 71) if ((perm & 0555) != (i_mode & 0555))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 72) return -EPERM;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 73)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 74) if (exfat_mode_can_hold_ro(inode)) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 75) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 76) * Of the w bits, either all (subject to umask) or none must
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 77) * be present.
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 78) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 79) if ((perm & 0222) && ((perm & 0222) != (0222 & ~mask)))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 80) return -EPERM;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 81) } else {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 82) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 83) * If exfat_mode_can_hold_ro(inode) is false, can't change
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 84) * w bits.
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 85) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 86) if ((perm & 0222) != (0222 & ~mask))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 87) return -EPERM;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 88) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 89)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 90) *mode_ptr &= S_IFMT | perm;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 91)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 92) return 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 93) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 94)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 95) /* resize the file length */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 96) int __exfat_truncate(struct inode *inode, loff_t new_size)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 97) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 98) unsigned int num_clusters_new, num_clusters_phys;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 99) unsigned int last_clu = EXFAT_FREE_CLUSTER;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 100) struct exfat_chain clu;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 101) struct super_block *sb = inode->i_sb;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 102) struct exfat_sb_info *sbi = EXFAT_SB(sb);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 103) struct exfat_inode_info *ei = EXFAT_I(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 104) int evict = (ei->dir.dir == DIR_DELETED) ? 1 : 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 105)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 106) /* check if the given file ID is opened */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 107) if (ei->type != TYPE_FILE && ei->type != TYPE_DIR)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 108) return -EPERM;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 109)
7018ec68f0824 (Tetsuhiro Kohada 2020-07-31 14:58:26 +0900 110) exfat_set_volume_dirty(sb);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 111)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 112) num_clusters_new = EXFAT_B_TO_CLU_ROUND_UP(i_size_read(inode), sbi);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 113) num_clusters_phys =
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 114) EXFAT_B_TO_CLU_ROUND_UP(EXFAT_I(inode)->i_size_ondisk, sbi);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 115)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 116) exfat_chain_set(&clu, ei->start_clu, num_clusters_phys, ei->flags);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 117)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 118) if (new_size > 0) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 119) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 120) * Truncate FAT chain num_clusters after the first cluster
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 121) * num_clusters = min(new, phys);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 122) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 123) unsigned int num_clusters =
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 124) min(num_clusters_new, num_clusters_phys);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 125)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 126) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 127) * Follow FAT chain
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 128) * (defensive coding - works fine even with corrupted FAT table
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 129) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 130) if (clu.flags == ALLOC_NO_FAT_CHAIN) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 131) clu.dir += num_clusters;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 132) clu.size -= num_clusters;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 133) } else {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 134) while (num_clusters > 0) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 135) last_clu = clu.dir;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 136) if (exfat_get_next_cluster(sb, &(clu.dir)))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 137) return -EIO;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 138)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 139) num_clusters--;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 140) clu.size--;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 141) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 142) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 143) } else {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 144) ei->flags = ALLOC_NO_FAT_CHAIN;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 145) ei->start_clu = EXFAT_EOF_CLUSTER;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 146) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 147)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 148) i_size_write(inode, new_size);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 149)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 150) if (ei->type == TYPE_FILE)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 151) ei->attr |= ATTR_ARCHIVE;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 152)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 153) /* update the directory entry */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 154) if (!evict) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 155) struct timespec64 ts;
943af1fdacfeb (Tetsuhiro Kohada 2020-05-20 16:56:41 +0900 156) struct exfat_dentry *ep, *ep2;
943af1fdacfeb (Tetsuhiro Kohada 2020-05-20 16:56:41 +0900 157) struct exfat_entry_set_cache *es;
8b0c471773819 (Tetsuhiro Kohada 2020-06-24 09:54:54 +0900 158) int err;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 159)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 160) es = exfat_get_dentry_set(sb, &(ei->dir), ei->entry,
943af1fdacfeb (Tetsuhiro Kohada 2020-05-20 16:56:41 +0900 161) ES_ALL_ENTRIES);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 162) if (!es)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 163) return -EIO;
943af1fdacfeb (Tetsuhiro Kohada 2020-05-20 16:56:41 +0900 164) ep = exfat_get_dentry_cached(es, 0);
943af1fdacfeb (Tetsuhiro Kohada 2020-05-20 16:56:41 +0900 165) ep2 = exfat_get_dentry_cached(es, 1);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 166)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 167) ts = current_time(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 168) exfat_set_entry_time(sbi, &ts,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 169) &ep->dentry.file.modify_tz,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 170) &ep->dentry.file.modify_time,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 171) &ep->dentry.file.modify_date,
ed0f84d30ba65 (Tetsuhiro Kohada 2020-04-22 08:30:56 +0900 172) &ep->dentry.file.modify_time_cs);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 173) ep->dentry.file.attr = cpu_to_le16(ei->attr);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 174)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 175) /* File size should be zero if there is no cluster allocated */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 176) if (ei->start_clu == EXFAT_EOF_CLUSTER) {
29bbb14bfc80d (Namjae Jeon 2020-06-04 08:05:31 +0900 177) ep2->dentry.stream.valid_size = 0;
29bbb14bfc80d (Namjae Jeon 2020-06-04 08:05:31 +0900 178) ep2->dentry.stream.size = 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 179) } else {
29bbb14bfc80d (Namjae Jeon 2020-06-04 08:05:31 +0900 180) ep2->dentry.stream.valid_size = cpu_to_le64(new_size);
41e3928f8c581 (Hyeongseok Kim 2020-07-08 18:52:33 +0900 181) ep2->dentry.stream.size = ep2->dentry.stream.valid_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 182) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 183)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 184) if (new_size == 0) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 185) /* Any directory can not be truncated to zero */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 186) WARN_ON(ei->type != TYPE_FILE);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 187)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 188) ep2->dentry.stream.flags = ALLOC_FAT_CHAIN;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 189) ep2->dentry.stream.start_clu = EXFAT_FREE_CLUSTER;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 190) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 191)
943af1fdacfeb (Tetsuhiro Kohada 2020-05-20 16:56:41 +0900 192) exfat_update_dir_chksum_with_entry_set(es);
8b0c471773819 (Tetsuhiro Kohada 2020-06-24 09:54:54 +0900 193) err = exfat_free_dentry_set(es, inode_needs_sync(inode));
8b0c471773819 (Tetsuhiro Kohada 2020-06-24 09:54:54 +0900 194) if (err)
8b0c471773819 (Tetsuhiro Kohada 2020-06-24 09:54:54 +0900 195) return err;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 196) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 197)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 198) /* cut off from the FAT chain */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 199) if (ei->flags == ALLOC_FAT_CHAIN && last_clu != EXFAT_FREE_CLUSTER &&
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 200) last_clu != EXFAT_EOF_CLUSTER) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 201) if (exfat_ent_set(sb, last_clu, EXFAT_EOF_CLUSTER))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 202) return -EIO;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 203) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 204)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 205) /* invalidate cache and free the clusters */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 206) /* clear exfat cache */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 207) exfat_cache_inval_inode(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 208)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 209) /* hint information */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 210) ei->hint_bmap.off = EXFAT_EOF_CLUSTER;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 211) ei->hint_bmap.clu = EXFAT_EOF_CLUSTER;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 212)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 213) /* hint_stat will be used if this is directory. */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 214) ei->hint_stat.eidx = 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 215) ei->hint_stat.clu = ei->start_clu;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 216) ei->hint_femp.eidx = EXFAT_HINT_NONE;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 217)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 218) /* free the clusters */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 219) if (exfat_free_cluster(inode, &clu))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 220) return -EIO;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 221)
7018ec68f0824 (Tetsuhiro Kohada 2020-07-31 14:58:26 +0900 222) exfat_clear_volume_dirty(sb);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 223)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 224) return 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 225) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 226)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 227) void exfat_truncate(struct inode *inode, loff_t size)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 228) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 229) struct super_block *sb = inode->i_sb;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 230) struct exfat_sb_info *sbi = EXFAT_SB(sb);
45882a6a0dbd1 (Xianting Tian 2020-08-15 18:57:07 +0800 231) unsigned int blocksize = i_blocksize(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 232) loff_t aligned_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 233) int err;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 234)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 235) mutex_lock(&sbi->s_lock);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 236) if (EXFAT_I(inode)->start_clu == 0) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 237) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 238) * Empty start_clu != ~0 (not allocated)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 239) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 240) exfat_fs_error(sb, "tried to truncate zeroed cluster.");
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 241) goto write_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 242) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 243)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 244) err = __exfat_truncate(inode, i_size_read(inode));
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 245) if (err)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 246) goto write_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 247)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 248) inode->i_ctime = inode->i_mtime = current_time(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 249) if (IS_DIRSYNC(inode))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 250) exfat_sync_inode(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 251) else
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 252) mark_inode_dirty(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 253)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 254) inode->i_blocks = ((i_size_read(inode) + (sbi->cluster_size - 1)) &
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 255) ~(sbi->cluster_size - 1)) >> inode->i_blkbits;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 256) write_size:
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 257) aligned_size = i_size_read(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 258) if (aligned_size & (blocksize - 1)) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 259) aligned_size |= (blocksize - 1);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 260) aligned_size++;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 261) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 262)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 263) if (EXFAT_I(inode)->i_size_ondisk > i_size_read(inode))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 264) EXFAT_I(inode)->i_size_ondisk = aligned_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 265)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 266) if (EXFAT_I(inode)->i_size_aligned > i_size_read(inode))
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 267) EXFAT_I(inode)->i_size_aligned = aligned_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 268) mutex_unlock(&sbi->s_lock);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 269) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 270)
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 271) int exfat_getattr(struct user_namespace *mnt_uerns, const struct path *path,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 272) struct kstat *stat, unsigned int request_mask,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 273) unsigned int query_flags)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 274) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 275) struct inode *inode = d_backing_inode(path->dentry);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 276) struct exfat_inode_info *ei = EXFAT_I(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 277)
0d56a4518d5ea (Christian Brauner 2021-01-21 14:19:30 +0100 278) generic_fillattr(&init_user_ns, inode, stat);
81df1ad40644b (Eric Sandeen 2020-04-21 11:13:10 +0900 279) exfat_truncate_atime(&stat->atime);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 280) stat->result_mask |= STATX_BTIME;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 281) stat->btime.tv_sec = ei->i_crtime.tv_sec;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 282) stat->btime.tv_nsec = ei->i_crtime.tv_nsec;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 283) stat->blksize = EXFAT_SB(inode->i_sb)->cluster_size;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 284) return 0;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 285) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 286)
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 287) int exfat_setattr(struct user_namespace *mnt_userns, struct dentry *dentry,
549c7297717c3 (Christian Brauner 2021-01-21 14:19:43 +0100 288) struct iattr *attr)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 289) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 290) struct exfat_sb_info *sbi = EXFAT_SB(dentry->d_sb);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 291) struct inode *inode = dentry->d_inode;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 292) unsigned int ia_valid;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 293) int error;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 294)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 295) if ((attr->ia_valid & ATTR_SIZE) &&
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 296) attr->ia_size > i_size_read(inode)) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 297) error = exfat_cont_expand(inode, attr->ia_size);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 298) if (error || attr->ia_valid == ATTR_SIZE)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 299) return error;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 300) attr->ia_valid &= ~ATTR_SIZE;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 301) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 302)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 303) /* Check for setting the inode time. */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 304) ia_valid = attr->ia_valid;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 305) if ((ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) &&
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 306) exfat_allow_set_time(sbi, inode)) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 307) attr->ia_valid &= ~(ATTR_MTIME_SET | ATTR_ATIME_SET |
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 308) ATTR_TIMES_SET);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 309) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 310)
2f221d6f7b881 (Christian Brauner 2021-01-21 14:19:26 +0100 311) error = setattr_prepare(&init_user_ns, dentry, attr);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 312) attr->ia_valid = ia_valid;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 313) if (error)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 314) goto out;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 315)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 316) if (((attr->ia_valid & ATTR_UID) &&
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 317) !uid_eq(attr->ia_uid, sbi->options.fs_uid)) ||
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 318) ((attr->ia_valid & ATTR_GID) &&
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 319) !gid_eq(attr->ia_gid, sbi->options.fs_gid)) ||
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 320) ((attr->ia_valid & ATTR_MODE) &&
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 321) (attr->ia_mode & ~(S_IFREG | S_IFLNK | S_IFDIR | 0777)))) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 322) error = -EPERM;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 323) goto out;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 324) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 325)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 326) /*
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 327) * We don't return -EPERM here. Yes, strange, but this is too
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 328) * old behavior.
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 329) */
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 330) if (attr->ia_valid & ATTR_MODE) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 331) if (exfat_sanitize_mode(sbi, inode, &attr->ia_mode) < 0)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 332) attr->ia_valid &= ~ATTR_MODE;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 333) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 334)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 335) if (attr->ia_valid & ATTR_SIZE) {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 336) error = exfat_block_truncate_page(inode, attr->ia_size);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 337) if (error)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 338) goto out;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 339)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 340) down_write(&EXFAT_I(inode)->truncate_lock);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 341) truncate_setsize(inode, attr->ia_size);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 342) exfat_truncate(inode, attr->ia_size);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 343) up_write(&EXFAT_I(inode)->truncate_lock);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 344) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 345)
2f221d6f7b881 (Christian Brauner 2021-01-21 14:19:26 +0100 346) setattr_copy(&init_user_ns, inode, attr);
81df1ad40644b (Eric Sandeen 2020-04-21 11:13:10 +0900 347) exfat_truncate_atime(&inode->i_atime);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 348) mark_inode_dirty(inode);
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 349)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 350) out:
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 351) return error;
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 352) }
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 353)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 354) static int exfat_ioctl_fitrim(struct inode *inode, unsigned long arg)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 355) {
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 356) struct request_queue *q = bdev_get_queue(inode->i_sb->s_bdev);
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 357) struct fstrim_range range;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 358) int ret = 0;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 359)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 360) if (!capable(CAP_SYS_ADMIN))
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 361) return -EPERM;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 362)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 363) if (!blk_queue_discard(q))
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 364) return -EOPNOTSUPP;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 365)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 366) if (copy_from_user(&range, (struct fstrim_range __user *)arg, sizeof(range)))
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 367) return -EFAULT;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 368)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 369) range.minlen = max_t(unsigned int, range.minlen,
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 370) q->limits.discard_granularity);
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 371)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 372) ret = exfat_trim_fs(inode, &range);
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 373) if (ret < 0)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 374) return ret;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 375)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 376) if (copy_to_user((struct fstrim_range __user *)arg, &range, sizeof(range)))
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 377) return -EFAULT;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 378)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 379) return 0;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 380) }
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 381)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 382) long exfat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 383) {
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 384) struct inode *inode = file_inode(filp);
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 385)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 386) switch (cmd) {
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 387) case FITRIM:
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 388) return exfat_ioctl_fitrim(inode, arg);
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 389) default:
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 390) return -ENOTTY;
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 391) }
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 392) }
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 393)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 394) #ifdef CONFIG_COMPAT
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 395) long exfat_compat_ioctl(struct file *filp, unsigned int cmd,
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 396) unsigned long arg)
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 397) {
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 398) return exfat_ioctl(filp, cmd, (unsigned long)compat_ptr(arg));
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 399) }
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 400) #endif
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 401)
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 402) int exfat_file_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 403) {
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 404) struct inode *inode = filp->f_mapping->host;
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 405) int err;
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 406)
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 407) err = __generic_file_fsync(filp, start, end, datasync);
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 408) if (err)
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 409) return err;
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 410)
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 411) err = sync_blockdev(inode->i_sb->s_bdev);
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 412) if (err)
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 413) return err;
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 414)
c6bf3f0e25f4c (Christoph Hellwig 2021-01-26 15:52:35 +0100 415) return blkdev_issue_flush(inode->i_sb->s_bdev);
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 416) }
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 417)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 418) const struct file_operations exfat_file_operations = {
035779483072f (Eric Sandeen 2020-05-01 20:34:25 -0500 419) .llseek = generic_file_llseek,
035779483072f (Eric Sandeen 2020-05-01 20:34:25 -0500 420) .read_iter = generic_file_read_iter,
035779483072f (Eric Sandeen 2020-05-01 20:34:25 -0500 421) .write_iter = generic_file_write_iter,
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 422) .unlocked_ioctl = exfat_ioctl,
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 423) #ifdef CONFIG_COMPAT
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 424) .compat_ioctl = exfat_compat_ioctl,
654762df2ec7d (Hyeongseok Kim 2021-03-04 09:20:35 +0900 425) #endif
035779483072f (Eric Sandeen 2020-05-01 20:34:25 -0500 426) .mmap = generic_file_mmap,
5267456e953fd (Sungjong Seo 2020-06-18 20:43:26 +0900 427) .fsync = exfat_file_fsync,
035779483072f (Eric Sandeen 2020-05-01 20:34:25 -0500 428) .splice_read = generic_file_splice_read,
035779483072f (Eric Sandeen 2020-05-01 20:34:25 -0500 429) .splice_write = iter_file_splice_write,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 430) };
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 431)
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 432) const struct inode_operations exfat_file_inode_operations = {
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 433) .setattr = exfat_setattr,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 434) .getattr = exfat_getattr,
98d917047e8b7 (Namjae Jeon 2020-03-02 15:21:36 +0900 435) };
VisionFive2 Linux kernel
StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)
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