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path: root/fs/fat/namei_msdos.c
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Diffstat (limited to 'fs/fat/namei_msdos.c')
-rw-r--r--fs/fat/namei_msdos.c55
1 files changed, 24 insertions, 31 deletions
diff --git a/fs/fat/namei_msdos.c b/fs/fat/namei_msdos.c
index c5938c9084b9..a783b0e1272a 100644
--- a/fs/fat/namei_msdos.c
+++ b/fs/fat/namei_msdos.c
@@ -148,8 +148,7 @@ static int msdos_find(struct inode *dir, const unsigned char *name, int len,
* that the existing dentry can be used. The msdos fs routines will
* return ENOENT or EINVAL as appropriate.
*/
-static int msdos_hash(const struct dentry *dentry, const struct inode *inode,
- struct qstr *qstr)
+static int msdos_hash(const struct dentry *dentry, struct qstr *qstr)
{
struct fat_mount_options *options = &MSDOS_SB(dentry->d_sb)->options;
unsigned char msdos_name[MSDOS_NAME];
@@ -165,8 +164,7 @@ static int msdos_hash(const struct dentry *dentry, const struct inode *inode,
* Compare two msdos names. If either of the names are invalid,
* we fall back to doing the standard name comparison.
*/
-static int msdos_cmp(const struct dentry *parent, const struct inode *pinode,
- const struct dentry *dentry, const struct inode *inode,
+static int msdos_cmp(const struct dentry *parent, const struct dentry *dentry,
unsigned int len, const char *str, const struct qstr *name)
{
struct fat_mount_options *options = &MSDOS_SB(parent->d_sb)->options;
@@ -201,14 +199,14 @@ static const struct dentry_operations msdos_dentry_operations = {
/***** Get inode using directory and name */
static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
struct super_block *sb = dir->i_sb;
struct fat_slot_info sinfo;
struct inode *inode;
int err;
- lock_super(sb);
+ mutex_lock(&MSDOS_SB(sb)->s_lock);
err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
switch (err) {
case -ENOENT:
@@ -221,7 +219,7 @@ static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
default:
inode = ERR_PTR(err);
}
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
return d_splice_alias(inode, dentry);
}
@@ -246,8 +244,7 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name,
de.ctime_cs = 0;
de.time = time;
de.date = date;
- de.start = cpu_to_le16(cluster);
- de.starthi = cpu_to_le16(cluster >> 16);
+ fat_set_start(&de, cluster);
de.size = 0;
err = fat_add_entries(dir, &de, 1, sinfo);
@@ -265,7 +262,7 @@ static int msdos_add_entry(struct inode *dir, const unsigned char *name,
/***** Create a file */
static int msdos_create(struct inode *dir, struct dentry *dentry, umode_t mode,
- struct nameidata *nd)
+ bool excl)
{
struct super_block *sb = dir->i_sb;
struct inode *inode = NULL;
@@ -274,7 +271,7 @@ static int msdos_create(struct inode *dir, struct dentry *dentry, umode_t mode,
unsigned char msdos_name[MSDOS_NAME];
int err, is_hid;
- lock_super(sb);
+ mutex_lock(&MSDOS_SB(sb)->s_lock);
err = msdos_format_name(dentry->d_name.name, dentry->d_name.len,
msdos_name, &MSDOS_SB(sb)->options);
@@ -303,7 +300,7 @@ static int msdos_create(struct inode *dir, struct dentry *dentry, umode_t mode,
d_instantiate(dentry, inode);
out:
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
if (!err)
err = fat_flush_inodes(sb, dir, inode);
return err;
@@ -317,7 +314,7 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
struct fat_slot_info sinfo;
int err;
- lock_super(sb);
+ mutex_lock(&MSDOS_SB(sb)->s_lock);
/*
* Check whether the directory is not in use, then check
* whether it is empty.
@@ -338,7 +335,7 @@ static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
inode->i_ctime = CURRENT_TIME_SEC;
fat_detach(inode);
out:
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
if (!err)
err = fat_flush_inodes(sb, dir, inode);
@@ -355,7 +352,7 @@ static int msdos_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
struct timespec ts;
int err, is_hid, cluster;
- lock_super(sb);
+ mutex_lock(&MSDOS_SB(sb)->s_lock);
err = msdos_format_name(dentry->d_name.name, dentry->d_name.len,
msdos_name, &MSDOS_SB(sb)->options);
@@ -393,14 +390,14 @@ static int msdos_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
d_instantiate(dentry, inode);
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
fat_flush_inodes(sb, dir, inode);
return 0;
out_free:
fat_free_clusters(dir, cluster);
out:
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
return err;
}
@@ -408,11 +405,11 @@ out:
static int msdos_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
- struct super_block *sb= inode->i_sb;
+ struct super_block *sb = inode->i_sb;
struct fat_slot_info sinfo;
int err;
- lock_super(sb);
+ mutex_lock(&MSDOS_SB(sb)->s_lock);
err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
if (err)
goto out;
@@ -424,7 +421,7 @@ static int msdos_unlink(struct inode *dir, struct dentry *dentry)
inode->i_ctime = CURRENT_TIME_SEC;
fat_detach(inode);
out:
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
if (!err)
err = fat_flush_inodes(sb, dir, inode);
@@ -441,7 +438,7 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
struct inode *old_inode, *new_inode;
struct fat_slot_info old_sinfo, sinfo;
struct timespec ts;
- loff_t dotdot_i_pos, new_i_pos;
+ loff_t new_i_pos;
int err, old_attrs, is_dir, update_dotdot, corrupt = 0;
old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
@@ -457,8 +454,7 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
is_dir = S_ISDIR(old_inode->i_mode);
update_dotdot = (is_dir && old_dir != new_dir);
if (update_dotdot) {
- if (fat_get_dotdot_entry(old_inode, &dotdot_bh, &dotdot_de,
- &dotdot_i_pos) < 0) {
+ if (fat_get_dotdot_entry(old_inode, &dotdot_bh, &dotdot_de)) {
err = -EIO;
goto out;
}
@@ -530,9 +526,7 @@ static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
mark_inode_dirty(old_inode);
if (update_dotdot) {
- int start = MSDOS_I(new_dir)->i_logstart;
- dotdot_de->start = cpu_to_le16(start);
- dotdot_de->starthi = cpu_to_le16(start >> 16);
+ fat_set_start(dotdot_de, MSDOS_I(new_dir)->i_logstart);
mark_buffer_dirty_inode(dotdot_bh, old_inode);
if (IS_DIRSYNC(new_dir)) {
err = sync_dirty_buffer(dotdot_bh);
@@ -572,9 +566,7 @@ error_dotdot:
corrupt = 1;
if (update_dotdot) {
- int start = MSDOS_I(old_dir)->i_logstart;
- dotdot_de->start = cpu_to_le16(start);
- dotdot_de->starthi = cpu_to_le16(start >> 16);
+ fat_set_start(dotdot_de, MSDOS_I(old_dir)->i_logstart);
mark_buffer_dirty_inode(dotdot_bh, old_inode);
corrupt |= sync_dirty_buffer(dotdot_bh);
}
@@ -612,7 +604,7 @@ static int msdos_rename(struct inode *old_dir, struct dentry *old_dentry,
unsigned char old_msdos_name[MSDOS_NAME], new_msdos_name[MSDOS_NAME];
int err, is_hid;
- lock_super(sb);
+ mutex_lock(&MSDOS_SB(sb)->s_lock);
err = msdos_format_name(old_dentry->d_name.name,
old_dentry->d_name.len, old_msdos_name,
@@ -631,7 +623,7 @@ static int msdos_rename(struct inode *old_dir, struct dentry *old_dentry,
err = do_msdos_rename(old_dir, old_msdos_name, old_dentry,
new_dir, new_msdos_name, new_dentry, is_hid);
out:
- unlock_super(sb);
+ mutex_unlock(&MSDOS_SB(sb)->s_lock);
if (!err)
err = fat_flush_inodes(sb, old_dir, new_dir);
return err;
@@ -674,6 +666,7 @@ static struct file_system_type msdos_fs_type = {
.kill_sb = kill_block_super,
.fs_flags = FS_REQUIRES_DEV,
};
+MODULE_ALIAS_FS("msdos");
static int __init init_msdos_fs(void)
{
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-17 14:44:17 +0000