diff options
Diffstat (limited to 'fs/exfat/namei.c')
| -rw-r--r-- | fs/exfat/namei.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/fs/exfat/namei.c b/fs/exfat/namei.c index 099f80645072..fede0283d6e2 100644 --- a/fs/exfat/namei.c +++ b/fs/exfat/namei.c @@ -31,10 +31,9 @@ static inline void exfat_d_version_set(struct dentry *dentry, * If it happened, the negative dentry isn't actually negative anymore. So, * drop it. */ -static int exfat_d_revalidate(struct dentry *dentry, unsigned int flags) +static int exfat_d_revalidate(struct inode *dir, const struct qstr *name, + struct dentry *dentry, unsigned int flags) { - int ret; - if (flags & LOOKUP_RCU) return -ECHILD; @@ -58,11 +57,7 @@ static int exfat_d_revalidate(struct dentry *dentry, unsigned int flags) if (flags & (LOOKUP_CREATE | LOOKUP_RENAME_TARGET)) return 0; - spin_lock(&dentry->d_lock); - ret = inode_eq_iversion(d_inode(dentry->d_parent), - exfat_d_version(dentry)); - spin_unlock(&dentry->d_lock); - return ret; + return inode_eq_iversion(dir, exfat_d_version(dentry)); } /* returns the length of a struct qstr, ignoring trailing dots if necessary */ @@ -237,7 +232,7 @@ static int exfat_search_empty_slot(struct super_block *sb, dentry = 0; } - while (dentry + num_entries < total_entries && + while (dentry + num_entries <= total_entries && clu.dir != EXFAT_EOF_CLUSTER) { i = dentry & (dentries_per_clu - 1); @@ -651,6 +646,11 @@ static int exfat_find(struct inode *dir, struct qstr *qname, info->valid_size = le64_to_cpu(ep2->dentry.stream.valid_size); info->size = le64_to_cpu(ep2->dentry.stream.size); + if (unlikely(EXFAT_B_TO_CLU_ROUND_UP(info->size, sbi) > sbi->used_clusters)) { + exfat_fs_error(sb, "data size is invalid(%lld)", info->size); + return -EIO; + } + info->start_clu = le32_to_cpu(ep2->dentry.stream.start_clu); if (!is_valid_cluster(sbi, info->start_clu) && info->size) { exfat_warn(sb, "start_clu is invalid cluster(0x%x)", @@ -840,8 +840,8 @@ unlock: return err; } -static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir, - struct dentry *dentry, umode_t mode) +static struct dentry *exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir, + struct dentry *dentry, umode_t mode) { struct super_block *sb = dir->i_sb; struct inode *inode; @@ -851,7 +851,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir, loff_t size = i_size_read(dir); if (unlikely(exfat_forced_shutdown(sb))) - return -EIO; + return ERR_PTR(-EIO); mutex_lock(&EXFAT_SB(sb)->s_lock); exfat_set_volume_dirty(sb); @@ -882,7 +882,7 @@ static int exfat_mkdir(struct mnt_idmap *idmap, struct inode *dir, unlock: mutex_unlock(&EXFAT_SB(sb)->s_lock); - return err; + return ERR_PTR(err); } static int exfat_check_dir_empty(struct super_block *sb, |