Release 4.14 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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 486 | 94.19% | 10 | 71.43% |
Hirofumi Ogawa | 18 | 3.49% | 2 | 14.29% |
Dave Jones | 9 | 1.74% | 1 | 7.14% |
René 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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 108 | 69.23% | 7 | 70.00% |
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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 73 | 91.25% | 2 | 40.00% |
Hirofumi Ogawa | 4 | 5.00% | 1 | 20.00% |
Linus Torvalds | 2 | 2.50% | 1 | 20.00% |
Nicholas 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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 122 | 82.99% | 2 | 40.00% |
Nicholas Piggin | 20 | 13.61% | 1 | 20.00% |
Hirofumi Ogawa | 4 | 2.72% | 1 | 20.00% |
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);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 66 | 45.83% | 7 | 35.00% |
Hirofumi Ogawa | 38 | 26.39% | 5 | 25.00% |
Al Viro | 16 | 11.11% | 4 | 20.00% |
Marco Stornelli | 14 | 9.72% | 1 | 5.00% |
Neil Brown | 6 | 4.17% | 1 | 5.00% |
Linus Torvalds | 3 | 2.08% | 1 | 5.00% |
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
Person | Tokens | Prop | Commits | CommitProp |
Hirofumi Ogawa | 136 | 62.96% | 7 | 46.67% |
Linus Torvalds (pre-git) | 64 | 29.63% | 6 | 40.00% |
Joe Peterson | 13 | 6.02% | 1 | 6.67% |
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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 166 | 57.64% | 13 | 44.83% |
Hirofumi Ogawa | 72 | 25.00% | 8 | 27.59% |
Chris Mason | 18 | 6.25% | 1 | 3.45% |
Marco Stornelli | 14 | 4.86% | 1 | 3.45% |
Al Viro | 7 | 2.43% | 3 | 10.34% |
Linus Torvalds | 6 | 2.08% | 1 | 3.45% |
Deepa Dinamani | 4 | 1.39% | 1 | 3.45% |
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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 68 | 39.77% | 8 | 42.11% |
Hirofumi Ogawa | 43 | 25.15% | 3 | 15.79% |
Linus Torvalds | 16 | 9.36% | 1 | 5.26% |
Chris Mason | 15 | 8.77% | 1 | 5.26% |
Marco Stornelli | 14 | 8.19% | 1 | 5.26% |
Dave Hansen | 6 | 3.51% | 2 | 10.53% |
Deepa Dinamani | 4 | 2.34% | 1 | 5.26% |
David Howells | 3 | 1.75% | 1 | 5.26% |
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
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 154 | 45.43% | 13 | 46.43% |
Hirofumi Ogawa | 132 | 38.94% | 7 | 25.00% |
Marco Stornelli | 21 | 6.19% | 1 | 3.57% |
Chris Mason | 9 | 2.65% | 1 | 3.57% |
Linus Torvalds | 9 | 2.65% | 1 | 3.57% |
Deepa Dinamani | 4 | 1.18% | 1 | 3.57% |
Miklos Szeredi | 4 | 1.18% | 1 | 3.57% |
Al Viro | 3 | 0.88% | 2 | 7.14% |
Dave Hansen | 3 | 0.88% | 1 | 3.57% |
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;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Linus Torvalds (pre-git) | 68 | 45.03% | 8 | 44.44% |
Hirofumi Ogawa | 26 | 17.22% | 3 | 16.67% |
Linus Torvalds | 16 | 10.60% | 1 | 5.56% |
Chris Mason | 15 | 9.93% | 1 | 5.56% |
Marco Stornelli | 14 | 9.27% | 1 | 5.56% |
Deepa Dinamani | 4 | 2.65% | 1 | 5.56% |
Dave Hansen | 3 | 1.99% | 1 | 5.56% |
David Howells | 3 | 1.99% | 1 | 5.56% |
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 | 551 | 67.03% | 7 | 25.00% |
Linus Torvalds (pre-git) | 226 | 27.49% | 12 | 42.86% |
Dave Hansen | 14 | 1.70% | 2 | 7.14% |
Steven J. Magnani | 8 | 0.97% | 1 | 3.57% |
Deepa Dinamani | 8 | 0.97% | 1 | 3.57% |
David Howells | 6 | 0.73% | 1 | 3.57% |
Al Viro | 6 | 0.73% | 1 | 3.57% |
Andrew Morton | 1 | 0.12% | 1 | 3.57% |
Denis Karpov | 1 | 0.12% | 1 | 3.57% |
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 |
Linus Torvalds (pre-git) | 147 | 65.33% | 9 | 52.94% |
Hirofumi Ogawa | 16 | 7.11% | 3 | 17.65% |
Linus Torvalds | 16 | 7.11% | 1 | 5.88% |
Chris Mason | 15 | 6.67% | 1 | 5.88% |
Miklos Szeredi | 15 | 6.67% | 1 | 5.88% |
Marco Stornelli | 14 | 6.22% | 1 | 5.88% |
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 | 24 | 70.59% | 1 | 50.00% |
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 |
Linus Torvalds (pre-git) | 23 | 71.88% | 2 | 28.57% |
Al Viro | 4 | 12.50% | 2 | 28.57% |
Brian Gerst | 2 | 6.25% | 1 | 14.29% |
Nicholas Piggin | 2 | 6.25% | 1 | 14.29% |
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 | 34 | 87.18% | 1 | 50.00% |
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 | 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 | 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 |
Linus Torvalds (pre-git) | 1842 | 51.84% | 34 | 33.33% |
Hirofumi Ogawa | 1227 | 34.53% | 23 | 22.55% |
Marco Stornelli | 91 | 2.56% | 1 | 0.98% |
Al Viro | 75 | 2.11% | 17 | 16.67% |
Chris Mason | 72 | 2.03% | 1 | 0.98% |
Linus Torvalds | 68 | 1.91% | 2 | 1.96% |
Dave Hansen | 26 | 0.73% | 3 | 2.94% |
Deepa Dinamani | 24 | 0.68% | 1 | 0.98% |
Nicholas Piggin | 23 | 0.65% | 3 | 2.94% |
Miklos Szeredi | 19 | 0.53% | 2 | 1.96% |
Art Haas | 18 | 0.51% | 1 | 0.98% |
Joe Peterson | 13 | 0.37% | 1 | 0.98% |
David Howells | 12 | 0.34% | 1 | 0.98% |
Steven J. Magnani | 11 | 0.31% | 1 | 0.98% |
Dave Jones | 9 | 0.25% | 1 | 0.98% |
Neil Brown | 6 | 0.17% | 1 | 0.98% |
Eric W. Biedermann | 5 | 0.14% | 1 | 0.98% |
René Scharfe | 4 | 0.11% | 1 | 0.98% |
Trond Myklebust | 2 | 0.06% | 2 | 1.96% |
Brian Gerst | 2 | 0.06% | 1 | 0.98% |
Andrew Morton | 1 | 0.03% | 1 | 0.98% |
Arjan van de Ven | 1 | 0.03% | 1 | 0.98% |
Denis Karpov | 1 | 0.03% | 1 | 0.98% |
Harvey Harrison | 1 | 0.03% | 1 | 0.98% |
Total | 3553 | 100.00% | 102 | 100.00% |
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