Release 4.10 fs/fat/namei_msdos.c

/*
 *  linux/fs/msdos/namei.c
 *
 *  Written 1992,1993 by Werner Almesberger
 *  Hidden files 1995 by Albert Cahalan <albert@ccs.neu.edu> <adc@coe.neu.edu>
 *  Rewritten for constant inumbers 1999 by Al Viro
 */

#include <linux/module.h>
#include "fat.h"

/* Characters that are undesirable in an MS-DOS file name */

static unsigned char bad_chars[] = "*?<>|\"";

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 *res, struct fat_mount_options *opts)
	/*
         * name is the proposed name, len is its length, res is
         * the resulting name, opts->name_check is either (r)elaxed,
         * (n)ormal or (s)trict, opts->dotsOK allows dots at the
         * beginning of name (for hidden files)
         */
{
	unsigned char *walk;
	unsigned char c;
	int space;

	if (name[0] == '.') {	/* dotfile because . and .. already done */
		if (opts->dotsOK) {
			/* Get rid of dot - test for it elsewhere */
			name++;
			len--;
		} else
			return -EINVAL;
	}
	/*
         * disallow names that _really_ start with a dot
         */
	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, c))
			return -EINVAL;
		if (c >= 'A' && c <= 'Z' && opts->name_check == 's')
			return -EINVAL;
		if (c < ' ' || c == ':' || c == '\\')
			return -EINVAL;
	/*
         * 0xE5 is legal as a first character, but we must substitute
         * 0x05 because 0xE5 marks deleted files.  Yes, DOS really
         * does this.
         * It seems that Microsoft hacked DOS to support non-US
         * characters after the 0xE5 character was already in use to
         * mark deleted files.
         */
		if ((res == walk) && (c == 0xE5))
			c = 0x05;
		if (c == '.')
			break;
		space = (c == ' ');
		*walk = (!opts->nocase && c >= 'a' && c <= 'z') ? c - 32 : c;
	}
	if (space)
		return -EINVAL;
	if (opts->name_check == 's' && len && c != '.') {
		c = *name++;
		len--;
		if (c != '.')
			return -EINVAL;
	}
	while (c != '.' && len--)
		c = *name++;
	if (c == '.') {
		while (walk - res < 8)
			*walk++ = ' ';
		while (len > 0 && walk - res < MSDOS_NAME) {
			c = *name++;
			len--;
			if (opts->name_check != 'r' && strchr(bad_chars, c))
				return -EINVAL;
			if (opts->name_check == 's' &&
			    strchr(bad_if_strict, c))
				return -EINVAL;
			if (c < ' ' || c == ':' || c == '\\')
				return -EINVAL;
			if (c == '.') {
				if (opts->name_check == 's')
					return -EINVAL;
				break;
			}
			if (c >= 'A' && c <= 'Z' && opts->name_check == 's')
				return -EINVAL;
			space = c == ' ';
			if (!opts->nocase && c >= 'a' && c <= 'z')
				*walk++ = c - 32;
			else
				*walk++ = c;
		}
		if (space)
			return -EINVAL;
		if (opts->name_check == 's' && len)
			return -EINVAL;
	}
	while (walk - res < MSDOS_NAME)
		*walk++ = ' ';

	return 0;
}

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486
94.19%
10
71.43%
hirofumi ogawa
hirofumi ogawa
18
3.49%
2
14.29%
dave jones
dave jones
9
1.74%
1
7.14%
rene scharfe
rene scharfe
3
0.58%
1
7.14%
Total
516
100.00%
14
100.00%

/***** Locates a directory entry.  Uses unformatted name. */


static int msdos_find(struct inode *dir, const unsigned char *name, int len,
		      struct fat_slot_info *sinfo)
{
	struct msdos_sb_info *sbi = MSDOS_SB(dir->i_sb);
	unsigned char msdos_name[MSDOS_NAME];
	int err;

	err = msdos_format_name(name, len, msdos_name, &sbi->options);
	if (err)
		return -ENOENT;

	err = fat_scan(dir, msdos_name, sinfo);
	if (!err && sbi->options.dotsOK) {
		if (name[0] == '.') {
			if (!(sinfo->de->attr & ATTR_HIDDEN))
				err = -ENOENT;
		} else {
			if (sinfo->de->attr & ATTR_HIDDEN)
				err = -ENOENT;
		}
		if (err)
			brelse(sinfo->bh);
	}
	return err;
}

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108
69.23%
7
70.00%
hirofumi ogawa
hirofumi ogawa
48
30.77%
3
30.00%
Total
156
100.00%
10
100.00%

/*
 * Compute the hash for the msdos name corresponding to the dentry.
 * Note: if the name is invalid, we leave the hash code unchanged so
 * 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, struct qstr *qstr)
{
	struct fat_mount_options *options = &MSDOS_SB(dentry->d_sb)->options;
	unsigned char msdos_name[MSDOS_NAME];
	int error;

	error = msdos_format_name(qstr->name, qstr->len, msdos_name, options);
	if (!error)
		qstr->hash = full_name_hash(dentry, msdos_name, MSDOS_NAME);
	return 0;
}

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pre-git
73
91.25%
2
40.00%
hirofumi ogawa
hirofumi ogawa
4
5.00%
1
20.00%
linus torvalds
linus torvalds
2
2.50%
1
20.00%
nick piggin
nick piggin
1
1.25%
1
20.00%
Total
80
100.00%
5
100.00%

/*
 * 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 *dentry,
		unsigned int len, const char *str, const struct qstr *name)
{
	struct fat_mount_options *options = &MSDOS_SB(dentry->d_sb)->options;
	unsigned char a_msdos_name[MSDOS_NAME], b_msdos_name[MSDOS_NAME];
	int error;

	error = msdos_format_name(name->name, name->len, a_msdos_name, options);
	if (error)
		goto old_compare;
	error = msdos_format_name(str, len, b_msdos_name, options);
	if (error)
		goto old_compare;
	error = memcmp(a_msdos_name, b_msdos_name, MSDOS_NAME);
out:
	return error;

old_compare:
	error = 1;
	if (name->len == len)
		error = memcmp(name->name, str, len);
	goto out;
}

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pre-git
pre-git
122
82.99%
2
40.00%
nick piggin
nick piggin
20
13.61%
1
20.00%
hirofumi ogawa
hirofumi ogawa
4
2.72%
1
20.00%
al viro
al viro
1
0.68%
1
20.00%
Total
147
100.00%
5
100.00%


static const struct dentry_operations msdos_dentry_operations = {
	.d_hash		= msdos_hash,
	.d_compare	= msdos_cmp,
};

/*
 * AV. Wrappers for FAT sb operations. Is it wise?
 */

/***** Get inode using directory and name */


static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
				   unsigned int flags)
{
	struct super_block *sb = dir->i_sb;
	struct fat_slot_info sinfo;
	struct inode *inode;
	int err;

	mutex_lock(&MSDOS_SB(sb)->s_lock);
	err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
	switch (err) {
	case -ENOENT:
		inode = NULL;
		break;
	case 0:
		inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
		brelse(sinfo.bh);
		break;
	default:
		inode = ERR_PTR(err);
	}
	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	return d_splice_alias(inode, dentry);
}

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7
35.00%
hirofumi ogawa
hirofumi ogawa
38
26.39%
5
25.00%
al viro
al viro
16
11.11%
4
20.00%
marco stornelli
marco stornelli
14
9.72%
1
5.00%
neil brown
neil brown
6
4.17%
1
5.00%
linus torvalds
linus torvalds
3
2.08%
1
5.00%
trond myklebust
trond myklebust
1
0.69%
1
5.00%
Total
144
100.00%
20
100.00%

/***** Creates a directory entry (name is already formatted). */


static int msdos_add_entry(struct inode *dir, const unsigned char *name,
			   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;

	memcpy(de.name, name, MSDOS_NAME);
	de.attr = is_dir ? ATTR_DIR : ATTR_ARCH;
	if (is_hid)
		de.attr |= ATTR_HIDDEN;
	de.lcase = 0;
	fat_time_unix2fat(sbi, ts, &time, &date, NULL);
	de.cdate = de.adate = 0;
	de.ctime = 0;
	de.ctime_cs = 0;
	de.time = time;
	de.date = date;
	fat_set_start(&de, cluster);
	de.size = 0;

	err = fat_add_entries(dir, &de, 1, sinfo);
	if (err)
		return err;

	dir->i_ctime = dir->i_mtime = *ts;
	if (IS_DIRSYNC(dir))
		(void)fat_sync_inode(dir);
	else
		mark_inode_dirty(dir);

	return 0;
}

Contributors
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hirofumi ogawa
hirofumi ogawa
136
62.96%
7
46.67%
pre-git
pre-git
64
29.63%
6
40.00%
joe peterson
joe peterson
13
6.02%
1
6.67%
steven j. magnani
steven j. magnani
3
1.39%
1
6.67%
Total
216
100.00%
15
100.00%

/***** Create a file */


static int msdos_create(struct inode *dir, struct dentry *dentry, umode_t mode,
			bool excl)
{
	struct super_block *sb = dir->i_sb;
	struct inode *inode = NULL;
	struct fat_slot_info sinfo;
	struct timespec ts;
	unsigned char msdos_name[MSDOS_NAME];
	int err, is_hid;

	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);
	if (err)
		goto out;
	is_hid = (dentry->d_name.name[0] == '.') && (msdos_name[0] != '.');
	/* Have to do it due to foo vs. .foo conflicts */
	if (!fat_scan(dir, msdos_name, &sinfo)) {
		brelse(sinfo.bh);
		err = -EINVAL;
		goto out;
	}

	ts = current_time(dir);
	err = msdos_add_entry(dir, msdos_name, 0, is_hid, 0, &ts, &sinfo);
	if (err)
		goto out;
	inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
	brelse(sinfo.bh);
	if (IS_ERR(inode)) {
		err = PTR_ERR(inode);
		goto out;
	}
	inode->i_mtime = inode->i_atime = inode->i_ctime = ts;
	/* timestamp is already written, so mark_inode_dirty() is unneeded. */

	d_instantiate(dentry, inode);
out:
	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	if (!err)
		err = fat_flush_inodes(sb, dir, inode);
	return err;
}

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pre-git
166
57.64%
13
44.83%
hirofumi ogawa
hirofumi ogawa
72
25.00%
8
27.59%
chris mason
chris mason
18
6.25%
1
3.45%
marco stornelli
marco stornelli
14
4.86%
1
3.45%
al viro
al viro
7
2.43%
3
10.34%
linus torvalds
linus torvalds
6
2.08%
1
3.45%
deepa dinamani
deepa dinamani
4
1.39%
1
3.45%
trond myklebust
trond myklebust
1
0.35%
1
3.45%
Total
288
100.00%
29
100.00%

/***** Remove a directory */


static int msdos_rmdir(struct inode *dir, struct dentry *dentry)
{
	struct super_block *sb = dir->i_sb;
	struct inode *inode = d_inode(dentry);
	struct fat_slot_info sinfo;
	int err;

	mutex_lock(&MSDOS_SB(sb)->s_lock);
	/*
         * Check whether the directory is not in use, then check
         * whether it is empty.
         */
	err = fat_dir_empty(inode);
	if (err)
		goto out;
	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;
	drop_nlink(dir);

	clear_nlink(inode);
	inode->i_ctime = current_time(inode);
	fat_detach(inode);
out:
	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	if (!err)
		err = fat_flush_inodes(sb, dir, inode);

	return err;
}

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8
42.11%
hirofumi ogawa
hirofumi ogawa
43
25.15%
3
15.79%
linus torvalds
linus torvalds
16
9.36%
1
5.26%
chris mason
chris mason
15
8.77%
1
5.26%
marco stornelli
marco stornelli
14
8.19%
1
5.26%
dave hansen
dave hansen
6
3.51%
2
10.53%
deepa dinamani
deepa dinamani
4
2.34%
1
5.26%
david howells
david howells
3
1.75%
1
5.26%
al viro
al viro
2
1.17%
1
5.26%
Total
171
100.00%
19
100.00%

/***** Make a directory */


static int msdos_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
	struct super_block *sb = dir->i_sb;
	struct fat_slot_info sinfo;
	struct inode *inode;
	unsigned char msdos_name[MSDOS_NAME];
	struct timespec ts;
	int err, is_hid, cluster;

	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);
	if (err)
		goto out;
	is_hid = (dentry->d_name.name[0] == '.') && (msdos_name[0] != '.');
	/* foo vs .foo situation */
	if (!fat_scan(dir, msdos_name, &sinfo)) {
		brelse(sinfo.bh);
		err = -EINVAL;
		goto out;
	}

	ts = current_time(dir);
	cluster = fat_alloc_new_dir(dir, &ts);
	if (cluster < 0) {
		err = cluster;
		goto out;
	}
	err = msdos_add_entry(dir, msdos_name, 1, is_hid, cluster, &ts, &sinfo);
	if (err)
		goto out_free;
	inc_nlink(dir);

	inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
	brelse(sinfo.bh);
	if (IS_ERR(inode)) {
		err = PTR_ERR(inode);
		/* the directory was completed, just return a error */
		goto out;
	}
	set_nlink(inode, 2);
	inode->i_mtime = inode->i_atime = inode->i_ctime = ts;
	/* timestamp is already written, so mark_inode_dirty() is unneeded. */

	d_instantiate(dentry, inode);

	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	fat_flush_inodes(sb, dir, inode);
	return 0;

out_free:
	fat_free_clusters(dir, cluster);
out:
	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	return err;
}

Contributors
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pre-git
pre-git
154
45.43%
13
46.43%
hirofumi ogawa
hirofumi ogawa
132
38.94%
7
25.00%
marco stornelli
marco stornelli
21
6.19%
1
3.57%
chris mason
chris mason
9
2.65%
1
3.57%
linus torvalds
linus torvalds
9
2.65%
1
3.57%
miklos szeredi
miklos szeredi
4
1.18%
1
3.57%
deepa dinamani
deepa dinamani
4
1.18%
1
3.57%
dave hansen
dave hansen
3
0.88%
1
3.57%
al viro
al viro
3
0.88%
2
7.14%
Total
339
100.00%
28
100.00%

/***** Unlink a file */


static int msdos_unlink(struct inode *dir, struct dentry *dentry)
{
	struct inode *inode = d_inode(dentry);
	struct super_block *sb = inode->i_sb;
	struct fat_slot_info sinfo;
	int err;

	mutex_lock(&MSDOS_SB(sb)->s_lock);
	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;
	clear_nlink(inode);
	inode->i_ctime = current_time(inode);
	fat_detach(inode);
out:
	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	if (!err)
		err = fat_flush_inodes(sb, dir, inode);

	return err;
}

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pre-git
pre-git
68
45.03%
8
44.44%
hirofumi ogawa
hirofumi ogawa
26
17.22%
3
16.67%
linus torvalds
linus torvalds
16
10.60%
1
5.56%
chris mason
chris mason
15
9.93%
1
5.56%
marco stornelli
marco stornelli
14
9.27%
1
5.56%
deepa dinamani
deepa dinamani
4
2.65%
1
5.56%
david howells
david howells
3
1.99%
1
5.56%
dave hansen
dave hansen
3
1.99%
1
5.56%
al viro
al viro
2
1.32%
1
5.56%
Total
151
100.00%
18
100.00%



static int do_msdos_rename(struct inode *old_dir, unsigned char *old_name,
			   struct dentry *old_dentry,
			   struct inode *new_dir, unsigned char *new_name,
			   struct dentry *new_dentry, int is_hid)
{
	struct buffer_head *dotdot_bh;
	struct msdos_dir_entry *dotdot_de;
	struct inode *old_inode, *new_inode;
	struct fat_slot_info old_sinfo, sinfo;
	struct timespec ts;
	loff_t new_i_pos;
	int err, old_attrs, is_dir, update_dotdot, corrupt = 0;

	old_sinfo.bh = sinfo.bh = dotdot_bh = NULL;
	old_inode = d_inode(old_dentry);
	new_inode = d_inode(new_dentry);

	err = fat_scan(old_dir, old_name, &old_sinfo);
	if (err) {
		err = -EIO;
		goto out;
	}

	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)) {
			err = -EIO;
			goto out;
		}
	}

	old_attrs = MSDOS_I(old_inode)->i_attrs;
	err = fat_scan(new_dir, new_name, &sinfo);
	if (!err) {
		if (!new_inode) {
			/* "foo" -> ".foo" case. just change the ATTR_HIDDEN */
			if (sinfo.de != old_sinfo.de) {
				err = -EINVAL;
				goto out;
			}
			if (is_hid)
				MSDOS_I(old_inode)->i_attrs |= ATTR_HIDDEN;
			else
				MSDOS_I(old_inode)->i_attrs &= ~ATTR_HIDDEN;
			if (IS_DIRSYNC(old_dir)) {
				err = fat_sync_inode(old_inode);
				if (err) {
					MSDOS_I(old_inode)->i_attrs = old_attrs;
					goto out;
				}
			} else
				mark_inode_dirty(old_inode);

			old_dir->i_version++;
			old_dir->i_ctime = old_dir->i_mtime = current_time(old_dir);
			if (IS_DIRSYNC(old_dir))
				(void)fat_sync_inode(old_dir);
			else
				mark_inode_dirty(old_dir);
			goto out;
		}
	}

	ts = current_time(old_inode);
	if (new_inode) {
		if (err)
			goto out;
		if (is_dir) {
			err = fat_dir_empty(new_inode);
			if (err)
				goto out;
		}
		new_i_pos = MSDOS_I(new_inode)->i_pos;
		fat_detach(new_inode);
	} else {
		err = msdos_add_entry(new_dir, new_name, is_dir, is_hid, 0,
				      &ts, &sinfo);
		if (err)
			goto out;
		new_i_pos = sinfo.i_pos;
	}
	new_dir->i_version++;

	fat_detach(old_inode);
	fat_attach(old_inode, new_i_pos);
	if (is_hid)
		MSDOS_I(old_inode)->i_attrs |= ATTR_HIDDEN;
	else
		MSDOS_I(old_inode)->i_attrs &= ~ATTR_HIDDEN;
	if (IS_DIRSYNC(new_dir)) {
		err = fat_sync_inode(old_inode);
		if (err)
			goto error_inode;
	} else
		mark_inode_dirty(old_inode);

	if (update_dotdot) {
		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);
			if (err)
				goto error_dotdot;
		}
		drop_nlink(old_dir);
		if (!new_inode)
			inc_nlink(new_dir);
	}

	err = fat_remove_entries(old_dir, &old_sinfo);	/* and releases bh */
	old_sinfo.bh = NULL;
	if (err)
		goto error_dotdot;
	old_dir->i_version++;
	old_dir->i_ctime = old_dir->i_mtime = ts;
	if (IS_DIRSYNC(old_dir))
		(void)fat_sync_inode(old_dir);
	else
		mark_inode_dirty(old_dir);

	if (new_inode) {
		drop_nlink(new_inode);
		if (is_dir)
			drop_nlink(new_inode);
		new_inode->i_ctime = ts;
	}
out:
	brelse(sinfo.bh);
	brelse(dotdot_bh);
	brelse(old_sinfo.bh);
	return err;

error_dotdot:
	/* data cluster is shared, serious corruption */
	corrupt = 1;

	if (update_dotdot) {
		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);
	}
error_inode:
	fat_detach(old_inode);
	fat_attach(old_inode, old_sinfo.i_pos);
	MSDOS_I(old_inode)->i_attrs = old_attrs;
	if (new_inode) {
		fat_attach(new_inode, new_i_pos);
		if (corrupt)
			corrupt |= fat_sync_inode(new_inode);
	} else {
		/*
                 * If new entry was not sharing the data cluster, it
                 * shouldn't be serious corruption.
                 */
		int err2 = fat_remove_entries(new_dir, &sinfo);
		if (corrupt)
			corrupt |= err2;
		sinfo.bh = NULL;
	}
	if (corrupt < 0) {
		fat_fs_error(new_dir->i_sb,
			     "%s: Filesystem corrupted (i_pos %lld)",
			     __func__, sinfo.i_pos);
	}
	goto out;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
hirofumi ogawa
hirofumi ogawa
551
67.03%
7
25.00%
pre-git
pre-git
226
27.49%
12
42.86%
dave hansen
dave hansen
14
1.70%
2
7.14%
deepa dinamani
deepa dinamani
8
0.97%
1
3.57%
steven j. magnani
steven j. magnani
8
0.97%
1
3.57%
al viro
al viro
6
0.73%
1
3.57%
david howells
david howells
6
0.73%
1
3.57%
andrew morton
andrew morton
1
0.12%
1
3.57%
denis karpov
denis karpov
1
0.12%
1
3.57%
harvey harrison
harvey harrison
1
0.12%
1
3.57%
Total
822
100.00%
28
100.00%

/***** Rename, a wrapper for rename_same_dir & rename_diff_dir */


static int msdos_rename(struct inode *old_dir, struct dentry *old_dentry,
			struct inode *new_dir, struct dentry *new_dentry,
			unsigned int flags)
{
	struct super_block *sb = old_dir->i_sb;
	unsigned char old_msdos_name[MSDOS_NAME], new_msdos_name[MSDOS_NAME];
	int err, is_hid;

	if (flags & ~RENAME_NOREPLACE)
		return -EINVAL;

	mutex_lock(&MSDOS_SB(sb)->s_lock);

	err = msdos_format_name(old_dentry->d_name.name,
				old_dentry->d_name.len, old_msdos_name,
				&MSDOS_SB(old_dir->i_sb)->options);
	if (err)
		goto out;
	err = msdos_format_name(new_dentry->d_name.name,
				new_dentry->d_name.len, new_msdos_name,
				&MSDOS_SB(new_dir->i_sb)->options);
	if (err)
		goto out;

	is_hid =
	     (new_dentry->d_name.name[0] == '.') && (new_msdos_name[0] != '.');

	err = do_msdos_rename(old_dir, old_msdos_name, old_dentry,
			      new_dir, new_msdos_name, new_dentry, is_hid);
out:
	mutex_unlock(&MSDOS_SB(sb)->s_lock);
	if (!err)
		err = fat_flush_inodes(sb, old_dir, new_dir);
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
147
65.33%
9
52.94%
hirofumi ogawa
hirofumi ogawa
16
7.11%
3
17.65%
linus torvalds
linus torvalds
16
7.11%
1
5.88%
chris mason
chris mason
15
6.67%
1
5.88%
miklos szeredi
miklos szeredi
15
6.67%
1
5.88%
marco stornelli
marco stornelli
14
6.22%
1
5.88%
al viro
al viro
2
0.89%
1
5.88%
Total
225
100.00%
17
100.00%


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_setattr,
	.getattr	= fat_getattr,
};



static void setup(struct super_block *sb)
{
	MSDOS_SB(sb)->dir_ops = &msdos_dir_inode_operations;
	sb->s_d_op = &msdos_dentry_operations;
	sb->s_flags |= MS_NOATIME;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
al viro
al viro
24
70.59%
1
50.00%
hirofumi ogawa
hirofumi ogawa
10
29.41%
1
50.00%
Total
34
100.00%
2
100.00%



static int msdos_fill_super(struct super_block *sb, void *data, int silent)
{
	return fat_fill_super(sb, data, silent, 0, setup);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
23
71.88%
2
28.57%
al viro
al viro
4
12.50%
2
28.57%
brian gerst
brian gerst
2
6.25%
1
14.29%
nick piggin
nick piggin
2
6.25%
1
14.29%
hirofumi ogawa
hirofumi ogawa
1
3.12%
1
14.29%
Total
32
100.00%
7
100.00%



static struct dentry *msdos_mount(struct file_system_type *fs_type,
			int flags, const char *dev_name,
			void *data)
{
	return mount_bdev(fs_type, flags, dev_name, data, msdos_fill_super);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
hirofumi ogawa
hirofumi ogawa
34
87.18%
1
50.00%
al viro
al viro
5
12.82%
1
50.00%
Total
39
100.00%
2
100.00%


static struct file_system_type msdos_fs_type = {
	.owner		= THIS_MODULE,
	.name		= "msdos",
	.mount		= msdos_mount,
	.kill_sb	= kill_block_super,
	.fs_flags	= FS_REQUIRES_DEV,
};
MODULE_ALIAS_FS("msdos");



static int __init init_msdos_fs(void)
{
	return register_filesystem(&msdos_fs_type);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
hirofumi ogawa
hirofumi ogawa
16
100.00%
1
100.00%
Total
16
100.00%
1
100.00%



static void __exit exit_msdos_fs(void)
{
	unregister_filesystem(&msdos_fs_type);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
hirofumi ogawa
hirofumi ogawa
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Werner Almesberger");
MODULE_DESCRIPTION("MS-DOS filesystem support");

module_init(init_msdos_fs)
module_exit(exit_msdos_fs)
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
pre-git
pre-git
1840
51.79%
34
33.01%
hirofumi ogawa
hirofumi ogawa
1227
34.53%
23
22.33%
marco stornelli
marco stornelli
91
2.56%
1
0.97%
al viro
al viro
75
2.11%
17
16.50%
chris mason
chris mason
72
2.03%
1
0.97%
linus torvalds
linus torvalds
68
1.91%
2
1.94%
dave hansen
dave hansen
26
0.73%
3
2.91%
deepa dinamani
deepa dinamani
24
0.68%
1
0.97%
nick piggin
nick piggin
23
0.65%
3
2.91%
miklos szeredi
miklos szeredi
19
0.53%
2
1.94%
art haas
art haas
18
0.51%
1
0.97%
joe peterson
joe peterson
13
0.37%
1
0.97%
david howells
david howells
12
0.34%
1
0.97%
steven j. magnani
steven j. magnani
11
0.31%
1
0.97%
dave jones
dave jones
9
0.25%
1
0.97%
neil brown
neil brown
6
0.17%
1
0.97%
eric w. biederman
eric w. biederman
5
0.14%
1
0.97%
rene scharfe
rene scharfe
4
0.11%
1
0.97%
christoph hellwig
christoph hellwig
2
0.06%
1
0.97%
trond myklebust
trond myklebust
2
0.06%
2
1.94%
brian gerst
brian gerst
2
0.06%
1
0.97%
denis karpov
denis karpov
1
0.03%
1
0.97%
andrew morton
andrew morton
1
0.03%
1
0.97%
arjan van de ven
arjan van de ven
1
0.03%
1
0.97%
harvey harrison
harvey harrison
1
0.03%
1
0.97%
Total
3553
100.00%
103
100.00%
Directory: fs/fat

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