#include <linux/msdos_fs.h>
#include <linux/smp_lock.h>
-/* MS-DOS "device special files" */
-static const unsigned char *reserved_names[] = {
- "CON ", "PRN ", "NUL ", "AUX ",
- "LPT1 ", "LPT2 ", "LPT3 ", "LPT4 ",
- "COM1 ", "COM2 ", "COM3 ", "COM4 ",
- NULL
-};
-
/* Characters that are undesirable in an MS-DOS file name */
static unsigned char bad_chars[] = "*?<>|\"";
-static unsigned char bad_if_strict_pc[] = "+=,; ";
-/* GEMDOS is less restrictive */
-static unsigned char bad_if_strict_atari[] = " ";
-
-#define bad_if_strict(opts) \
- ((opts)->atari ? bad_if_strict_atari : bad_if_strict_pc)
+static unsigned char bad_if_strict[] = "+=,; ";
/***** Formats an MS-DOS file name. Rejects invalid names. */
static int msdos_format_name(const unsigned char *name, int len,
*/
{
unsigned char *walk;
- const unsigned char **reserved;
unsigned char c;
int space;
/* Get rid of dot - test for it elsewhere */
name++;
len--;
- } else if (!opts->atari)
+ } else
return -EINVAL;
}
/*
- * disallow names that _really_ start with a dot for MS-DOS,
- * GEMDOS does not care
+ * disallow names that _really_ start with a dot
*/
- space = !opts->atari;
+ space = 1;
c = 0;
for (walk = res; len && walk - res < 8; walk++) {
c = *name++;
len--;
if (opts->name_check != 'r' && strchr(bad_chars, c))
return -EINVAL;
- if (opts->name_check == 's' && strchr(bad_if_strict(opts), c))
+ if (opts->name_check == 's' && strchr(bad_if_strict, c))
return -EINVAL;
if (c >= 'A' && c <= 'Z' && opts->name_check == 's')
return -EINVAL;
if (opts->name_check != 'r' && strchr(bad_chars, c))
return -EINVAL;
if (opts->name_check == 's' &&
- strchr(bad_if_strict(opts), c))
+ strchr(bad_if_strict, c))
return -EINVAL;
if (c < ' ' || c == ':' || c == '\\')
return -EINVAL;
}
while (walk - res < MSDOS_NAME)
*walk++ = ' ';
- if (!opts->atari)
- /* GEMDOS is less stupid and has no reserved names */
- for (reserved = reserved_names; *reserved; reserved++)
- if (!strncmp(res, *reserved, 8))
- return -EINVAL;
+
return 0;
}
dentry->d_op = &msdos_dentry_operations;
- lock_kernel();
+ lock_super(sb);
res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
if (res == -ENOENT)
goto add;
if (dentry)
dentry->d_op = &msdos_dentry_operations;
out:
- unlock_kernel();
+ unlock_super(sb);
if (!res)
return dentry;
return ERR_PTR(res);
int is_dir, int is_hid, int cluster,
struct timespec *ts, struct fat_slot_info *sinfo)
{
+ struct msdos_sb_info *sbi = MSDOS_SB(dir->i_sb);
struct msdos_dir_entry de;
__le16 time, date;
int err;
if (is_hid)
de.attr |= ATTR_HIDDEN;
de.lcase = 0;
- fat_date_unix2dos(ts->tv_sec, &time, &date);
+ fat_date_unix2dos(ts->tv_sec, &time, &date, sbi->options.tz_utc);
de.cdate = de.adate = 0;
de.ctime = 0;
de.ctime_cs = 0;
struct nameidata *nd)
{
struct super_block *sb = dir->i_sb;
- struct inode *inode;
+ struct inode *inode = NULL;
struct fat_slot_info sinfo;
struct timespec ts;
unsigned char msdos_name[MSDOS_NAME];
int err, is_hid;
- lock_kernel();
+ lock_super(sb);
err = msdos_format_name(dentry->d_name.name, dentry->d_name.len,
msdos_name, &MSDOS_SB(sb)->options);
d_instantiate(dentry, inode);
out:
- unlock_kernel();
+ unlock_super(sb);
+ if (!err)
+ err = fat_flush_inodes(sb, dir, inode);
return err;
}
/***** Remove a directory */
static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
{
+ struct super_block *sb = dir->i_sb;
struct inode *inode = dentry->d_inode;
struct fat_slot_info sinfo;
int err;
- lock_kernel();
+ lock_super(sb);
/*
* Check whether the directory is not in use, then check
* whether it is empty.
err = fat_remove_entries(dir, &sinfo); /* and releases bh */
if (err)
goto out;
- dir->i_nlink--;
+ drop_nlink(dir);
- inode->i_nlink = 0;
+ clear_nlink(inode);
inode->i_ctime = CURRENT_TIME_SEC;
fat_detach(inode);
out:
- unlock_kernel();
+ unlock_super(sb);
+ if (!err)
+ err = fat_flush_inodes(sb, dir, inode);
return err;
}
struct timespec ts;
int err, is_hid, cluster;
- lock_kernel();
+ lock_super(sb);
err = msdos_format_name(dentry->d_name.name, dentry->d_name.len,
msdos_name, &MSDOS_SB(sb)->options);
err = msdos_add_entry(dir, msdos_name, 1, is_hid, cluster, &ts, &sinfo);
if (err)
goto out_free;
- dir->i_nlink++;
+ inc_nlink(dir);
inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
brelse(sinfo.bh);
d_instantiate(dentry, inode);
- unlock_kernel();
+ unlock_super(sb);
+ fat_flush_inodes(sb, dir, inode);
return 0;
out_free:
fat_free_clusters(dir, cluster);
out:
- unlock_kernel();
+ unlock_super(sb);
return err;
}
static int msdos_unlink(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = dentry->d_inode;
+ struct super_block *sb= inode->i_sb;
struct fat_slot_info sinfo;
int err;
- lock_kernel();
+ lock_super(sb);
err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
if (err)
goto out;
err = fat_remove_entries(dir, &sinfo); /* and releases bh */
if (err)
goto out;
- inode->i_nlink = 0;
+ clear_nlink(inode);
inode->i_ctime = CURRENT_TIME_SEC;
fat_detach(inode);
out:
- unlock_kernel();
+ unlock_super(sb);
+ if (!err)
+ err = fat_flush_inodes(sb, dir, inode);
return err;
}
if (err)
goto error_dotdot;
}
- old_dir->i_nlink--;
+ drop_nlink(old_dir);
if (!new_inode)
- new_dir->i_nlink++;
+ inc_nlink(new_dir);
}
err = fat_remove_entries(old_dir, &old_sinfo); /* and releases bh */
mark_inode_dirty(old_dir);
if (new_inode) {
+ drop_nlink(new_inode);
if (is_dir)
- new_inode->i_nlink -= 2;
- else
- new_inode->i_nlink--;
+ drop_nlink(new_inode);
new_inode->i_ctime = ts;
}
out:
if (corrupt < 0) {
fat_fs_panic(new_dir->i_sb,
"%s: Filesystem corrupted (i_pos %lld)",
- __FUNCTION__, sinfo.i_pos);
+ __func__, sinfo.i_pos);
}
goto out;
}
static int msdos_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
+ struct super_block *sb = old_dir->i_sb;
unsigned char old_msdos_name[MSDOS_NAME], new_msdos_name[MSDOS_NAME];
int err, is_hid;
- lock_kernel();
+ lock_super(sb);
err = msdos_format_name(old_dentry->d_name.name,
old_dentry->d_name.len, old_msdos_name,
err = do_msdos_rename(old_dir, old_msdos_name, old_dentry,
new_dir, new_msdos_name, new_dentry, is_hid);
out:
- unlock_kernel();
+ unlock_super(sb);
+ if (!err)
+ err = fat_flush_inodes(sb, old_dir, new_dir);
return err;
}
-static struct inode_operations msdos_dir_inode_operations = {
+static const struct inode_operations msdos_dir_inode_operations = {
.create = msdos_create,
.lookup = msdos_lookup,
.unlink = msdos_unlink,
.mkdir = msdos_mkdir,
.rmdir = msdos_rmdir,
.rename = msdos_rename,
- .setattr = fat_notify_change,
+ .setattr = fat_setattr,
+ .getattr = fat_getattr,
};
static int msdos_fill_super(struct super_block *sb, void *data, int silent)
return 0;
}
-static struct super_block *msdos_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name,
- void *data)
+static int msdos_get_sb(struct file_system_type *fs_type,
+ int flags, const char *dev_name,
+ void *data, struct vfsmount *mnt)
{
- return get_sb_bdev(fs_type, flags, dev_name, data, msdos_fill_super);
+ return get_sb_bdev(fs_type, flags, dev_name, data, msdos_fill_super,
+ mnt);
}
static struct file_system_type msdos_fs_type = {
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