int minix_mkdir(register struct inode *dir, char *name, size_t len, int mode)
{
int error;
register struct inode *inode;
struct buffer_head *bh;
struct minix_dir_entry *de;
error = -EINVAL;
if (!dir || !dir->i_sb)
goto mkdir2;
error = -EMLINK;
if (dir->i_nlink >= MINIX_LINK_MAX)
goto mkdir2;
error = -EEXIST;
bh = minix_find_entry(dir, name, len, &de);
if (bh) {
unmap_brelse(bh);
goto mkdir2;
}
error = -ENOSPC;
inode = minix_new_inode(dir, (__u16)mode);
if (!inode)
goto mkdir2;
/*--------------------------------------------------------------------------------*/
debug("m_mkdir: new_inode succeeded\n");
debug("m_mkdir: starting minix_bread\n");
bh = minix_bread(inode, 0, 1);
if (!bh) {
goto mkdir1;
}
debug("m_mkdir: read succeeded\n");
inode->i_size = (dir->i_sb->u.minix_sb.s_dirsize << 1);
map_buffer(bh);
de = (struct minix_dir_entry *) bh->b_data;
de->inode = inode->i_ino;
strcpy(de->name, ".");
de = (struct minix_dir_entry *)(((char *)de) + dir->i_sb->u.minix_sb.s_dirsize);
de->inode = dir->i_ino;
strcpy(de->name, "..");
mark_buffer_dirty(bh, 1);
unmap_brelse(bh);
debug("m_mkdir: dir_block update succeeded\n");
/*--------------------------------------------------------------------------------*/
error = minix_add_entry(dir, name, len, inode->i_ino);
if (error) {
mkdir1:
inode->i_nlink--;
}
else {
inode->i_nlink++;
dir->i_nlink++;
}
inode->i_dirt = 1;
iput(inode);
mkdir2:
iput(dir);
debug("m_mkdir: done!\n");
return error;
}
int minix_mknod(register struct inode *dir, char *name, size_t len,
int mode, int rdev)
{
int error;
register struct inode *inode;
struct buffer_head *bh;
struct minix_dir_entry *de;
/* if (!dir)
return -ENOENT;*/ /* Already checked by do_mknod() */
error = -EEXIST;
bh = minix_find_entry(dir, name, len, &de);
if (bh) {
unmap_brelse(bh);
goto mknod2;
}
error = -ENOSPC;
inode = minix_new_inode(dir, (__u16)mode);
if (!inode)
goto mknod2;
/*----------------------------------------------------------------------*/
if (S_ISBLK(mode) || S_ISCHR(mode))
inode->i_rdev = to_kdev_t(rdev);
/*----------------------------------------------------------------------*/
error = minix_add_entry(dir, name, len, inode->i_ino);
if (error) {
inode->i_nlink--;
inode->i_dirt = 1;
}
iput(inode);
mknod2:
iput(dir);
return error;
}
int minix_create(register struct inode *dir, char *name, size_t len,
int mode, struct inode **result)
{
register struct inode *inode = NULL;
int error;
error = -ENOENT;
if (!dir)
goto create2;
error = -ENOSPC;
inode = minix_new_inode(dir, (__u16)mode);
if (!inode)
goto create1;
/*----------------------------------------------------------------------*/
/*----------------------------------------------------------------------*/
error = minix_add_entry(dir, name, len, inode->i_ino);
if(error) {
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
inode = NULL;
}
create1:
iput(dir);
create2:
*result = inode;
return error;
}
int minix_create(struct inode * dir, struct dentry *dentry, int mode)
{
int error;
struct inode * inode;
struct buffer_head * bh;
struct minix_dir_entry * de;
if (!dir)
return -ENOENT;
inode = minix_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_op = &minix_file_inode_operations;
inode->i_mode = mode;
mark_inode_dirty(inode);
error = minix_add_entry(dir, dentry->d_name.name,
dentry->d_name.len, &bh ,&de);
if (error) {
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
return error;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
d_instantiate(dentry, inode);
return 0;
}
static int minix_symlink(struct inode * dir, struct dentry *dentry,
const char * symname)
{
int err = -ENAMETOOLONG;
int i = strlen(symname)+1;
struct inode * inode;
if (i > dir->i_sb->s_blocksize)
goto out;
inode = minix_new_inode(dir, &err);
if (!inode)
goto out;
inode->i_mode = S_IFLNK | 0777;
minix_set_inode(inode, 0);
err = page_symlink(inode, symname, i);
if (err)
goto out_fail;
err = add_nondir(dentry, inode);
out:
return err;
out_fail:
dec_count(inode);
iput(inode);
goto out;
}
int minix_create(register struct inode *dir, char *name, size_t len,
int mode, struct inode **result)
{
register struct inode *inode;
struct buffer_head *bh;
struct minix_dir_entry *de;
int error;
*result = NULL;
if (!dir)
return -ENOENT;
inode = minix_new_inode(dir);
if (!inode) {
iput(dir);
return -ENOSPC;
}
inode->i_op = &minix_file_inode_operations;
inode->i_mode = (__u16) mode;
inode->i_dirt = 1;
error = minix_add_entry(dir, name, len, &bh, &de);
if (error) {
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
iput(dir);
return error;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
iput(dir);
*result = inode;
return 0;
}
static int minix_mkdir(struct inode * dir, struct dentry *dentry, int mode)
{
struct inode * inode;
int err;
inode_inc_link_count(dir);
inode = minix_new_inode(dir, S_IFDIR | mode, &err);
if (!inode)
goto out_dir;
minix_set_inode(inode, 0);
inode_inc_link_count(inode);
err = minix_make_empty(inode, dir);
if (err)
goto out_fail;
err = minix_add_link(dentry, inode);
if (err)
goto out_fail;
d_instantiate(dentry, inode);
out:
return err;
out_fail:
inode_dec_link_count(inode);
inode_dec_link_count(inode);
iput(inode);
out_dir:
inode_dec_link_count(dir);
goto out;
}
int minix_mkdir(struct inode * dir, struct dentry *dentry, int mode)
{
int error;
struct inode * inode;
struct buffer_head * bh, *dir_block;
struct minix_dir_entry * de;
struct minix_sb_info * info;
if (!dir || !dir->i_sb)
return -EINVAL;
info = &dir->i_sb->u.minix_sb;
bh = minix_find_entry(dir, dentry->d_name.name,
dentry->d_name.len, &de);
if (bh) {
brelse(bh);
return -EEXIST;
}
if (dir->i_nlink >= info->s_link_max)
return -EMLINK;
inode = minix_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_op = &minix_dir_inode_operations;
inode->i_size = 2 * info->s_dirsize;
dir_block = minix_bread(inode,0,1);
if (!dir_block) {
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
return -ENOSPC;
}
de = (struct minix_dir_entry *) dir_block->b_data;
de->inode=inode->i_ino;
strcpy(de->name,".");
de = (struct minix_dir_entry *) (dir_block->b_data + info->s_dirsize);
de->inode = dir->i_ino;
strcpy(de->name,"..");
inode->i_nlink = 2;
mark_buffer_dirty(dir_block, 1);
brelse(dir_block);
inode->i_mode = S_IFDIR | (mode & 0777 & ~current->fs->umask);
if (dir->i_mode & S_ISGID)
inode->i_mode |= S_ISGID;
mark_inode_dirty(inode);
error = minix_add_entry(dir, dentry->d_name.name,
dentry->d_name.len, &bh, &de);
if (error) {
inode->i_nlink=0;
iput(inode);
return error;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
dir->i_nlink++;
mark_inode_dirty(dir);
brelse(bh);
d_instantiate(dentry, inode);
return 0;
}
int minix_symlink(struct inode *dir, char *name, size_t len, char *symname)
{
struct minix_dir_entry *de;
register struct inode *inode = NULL;
struct buffer_head *bh = NULL;
register struct buffer_head *name_block = NULL;
int i;
char c;
if (!(inode = minix_new_inode(dir))) {
iput(dir);
return -ENOSPC;
}
inode->i_mode = (__u16) (S_IFLNK | 0777);
inode->i_op = &minix_symlink_inode_operations;
name_block = minix_bread(inode, 0, 1);
if (!name_block) {
iput(dir);
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
return -ENOSPC;
}
map_buffer(name_block);
i = 0;
while (i < 1023 && (c = *(symname++)))
name_block->b_data[i++] = c;
name_block->b_data[i] = 0;
mark_buffer_dirty(name_block, 1);
unmap_brelse(name_block);
inode->i_size = (__u32) i;
inode->i_dirt = 1;
bh = minix_find_entry(dir, name, len, &de);
map_buffer(bh);
if (bh) {
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
unmap_brelse(bh);
iput(dir);
return -EEXIST;
}
i = minix_add_entry(dir, name, len, &bh, &de);
if (i) {
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
iput(dir);
return i;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
iput(dir);
iput(inode);
return 0;
}
static int minix_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
{
int error;
struct inode *inode = minix_new_inode(dir, mode, &error);
if (inode) {
minix_set_inode(inode, 0);
mark_inode_dirty(inode);
d_tmpfile(dentry, inode);
}
return error;
}
int minix_symlink(struct inode * dir, struct dentry *dentry,
const char * symname)
{
struct minix_dir_entry * de;
struct inode * inode = NULL;
struct buffer_head * bh = NULL, * name_block = NULL;
int i;
char c;
if (!(inode = minix_new_inode(dir)))
return -ENOSPC;
inode->i_mode = S_IFLNK | 0777;
inode->i_op = &minix_symlink_inode_operations;
name_block = minix_bread(inode,0,1);
if (!name_block) {
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
return -ENOSPC;
}
i = 0;
while (i < 1023 && (c=*(symname++)))
name_block->b_data[i++] = c;
name_block->b_data[i] = 0;
mark_buffer_dirty(name_block, 1);
brelse(name_block);
inode->i_size = i;
mark_inode_dirty(inode);
bh = minix_find_entry(dir, dentry->d_name.name,
dentry->d_name.len, &de);
if (bh) {
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
brelse(bh);
return -EEXIST;
}
i = minix_add_entry(dir, dentry->d_name.name,
dentry->d_name.len, &bh, &de);
if (i) {
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
return i;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
d_instantiate(dentry, inode);
return 0;
}
struct inode *minix_inode_create(struct inode *dir, char *base, int len)
{
struct minix_dentry *de;
struct inode *inode;
struct block *block;
int entries, i, k, n;
if (len > MINIX_NAME_LEN)
return NULL;
/* exist? */
de = minix_lookup_dentry(dir, base, len, NULL);
if (de)
return NULL;
/* find an empty dir entry */
entries = dir->i_size / MINIX_DENTRY_SIZE;
for (i = 0; i < entries; i += n) {
block = bmap_block(dir, i / MINIX_DENTRIES_PER_BLOCK, 0);
de = (struct minix_dentry *)block->b_data;
n = min(entries - i, MINIX_DENTRIES_PER_BLOCK);
for (k = 0; k < n; k++, de++) {
if (de->d_ino == 0)
goto found;
}
if (i + n < entries || !(entries % MINIX_DENTRIES_PER_BLOCK)) {
put_block(block);
block = NULL;
}
}
/* create a new data block and get dir entry from it */
if (!block) {
block = bmap_block(dir, entries / MINIX_DENTRIES_PER_BLOCK, 1);
if (!block)
return NULL;
if (block->b_refcnt != 1)
panic("Not new block(ref:%d)", block->b_refcnt);
de = (struct minix_dentry *)block->b_data;
}
inode_update_size(dir, dir->i_size + MINIX_DENTRY_SIZE);
found:
inode = minix_new_inode(dir->i_sb);
if (!inode)
goto out;
/* fill dir entry */
strncpy(de->d_name, base, len);
de->d_name[len] = '\0';
de->d_ino = inode->i_ino;
minix_inode_dirty_block(dir, block);
out:
put_block(block);
return inode;
}
static int minix_mknod(struct inode * dir, struct dentry *dentry, int mode, dev_t rdev)
{
int error;
struct inode *inode;
if (!old_valid_dev(rdev))
return -EINVAL;
inode = minix_new_inode(dir, mode, &error);
if (inode) {
minix_set_inode(inode, rdev);
mark_inode_dirty(inode);
error = add_nondir(dentry, inode);
}
return error;
}
int minix_mknod(struct inode * dir, struct dentry *dentry, int mode, int rdev)
{
int error;
struct inode * inode;
struct buffer_head * bh;
struct minix_dir_entry * de;
if (!dir)
return -ENOENT;
bh = minix_find_entry(dir, dentry->d_name.name,
dentry->d_name.len, &de);
if (bh) {
brelse(bh);
return -EEXIST;
}
inode = minix_new_inode(dir);
if (!inode)
return -ENOSPC;
inode->i_uid = current->fsuid;
inode->i_mode = mode;
inode->i_op = NULL;
if (S_ISREG(inode->i_mode))
inode->i_op = &minix_file_inode_operations;
else if (S_ISCHR(inode->i_mode))
inode->i_op = &chrdev_inode_operations;
else if (S_ISBLK(inode->i_mode))
inode->i_op = &blkdev_inode_operations;
else if (S_ISFIFO(inode->i_mode))
init_fifo(inode);
if (S_ISBLK(mode) || S_ISCHR(mode))
inode->i_rdev = to_kdev_t(rdev);
mark_inode_dirty(inode);
error = minix_add_entry(dir, dentry->d_name.name, dentry->d_name.len, &bh, &de);
if (error) {
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
return error;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
d_instantiate(dentry, inode);
return 0;
}
int minix_symlink(struct inode *dir, char *name, size_t len, char *symname)
{
int error;
register struct inode *inode;
register struct buffer_head *bh;
struct minix_dir_entry *de;
error = -EEXIST;
bh = minix_find_entry(dir, name, len, &de);
if (bh) {
unmap_brelse(bh);
goto symlink2;
}
error = -ENOSPC;
inode = minix_new_inode(dir, S_IFLNK);
if (!inode)
goto symlink2;
/*----------------------------------------------------------------------*/
bh = minix_bread(inode, 0, 1);
if (!bh)
goto symlink1;
map_buffer(bh);
if((error = strlen_fromfs(symname)) > 1023)
error = 1023;
memcpy_fromfs(bh->b_data, symname, error);
bh->b_data[error] = 0;
inode->i_size = (__u32) error;
mark_buffer_dirty(bh, 1);
unmap_brelse(bh);
/*----------------------------------------------------------------------*/
error = minix_add_entry(dir, name, len, inode->i_ino);
if (error) {
symlink1:
inode->i_nlink--;
inode->i_dirt = 1;
}
iput(inode);
symlink2:
iput(dir);
return error;
}
static int minix_mkdir(struct inode * dir, struct dentry *dentry, int mode)
{
struct inode * inode;
int err = -EMLINK;
if (dir->i_nlink >= minix_sb(dir->i_sb)->s_link_max)
goto out;
inc_count(dir);
inode = minix_new_inode(dir, &err);
if (!inode)
goto out_dir;
inode->i_mode = S_IFDIR | mode;
if (dir->i_mode & S_ISGID)
inode->i_mode |= S_ISGID;
minix_set_inode(inode, 0);
inc_count(inode);
err = minix_make_empty(inode, dir);
if (err)
goto out_fail;
err = minix_add_link(dentry, inode);
if (err)
goto out_fail;
d_instantiate(dentry, inode);
out:
return err;
out_fail:
dec_count(inode);
dec_count(inode);
iput(inode);
out_dir:
dec_count(dir);
goto out;
}
int minix_create(register struct inode *dir, char *name, size_t len,
int mode, struct inode **result)
{
register struct inode *inode = NULL;
int error;
if (!dir)
error = -ENOENT;
else if (!(inode = minix_new_inode(dir, (__u16)mode)))
error = -ENOSPC;
else {
/*----------------------------------------------------------------------*/
/*----------------------------------------------------------------------*/
if ((error = minix_add_entry(dir, name, len, inode->i_ino))) {
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
inode = NULL;
}
iput(dir);
}
*result = inode;
return error;
}
int minix_mknod(register struct inode *dir, char *name, size_t len,
int mode, int rdev)
{
int error;
register struct inode *inode;
struct buffer_head *bh;
struct minix_dir_entry *de;
if (!dir)
return -ENOENT;
bh = minix_find_entry(dir, name, len, &de);
if (bh) {
brelse(bh);
iput(dir);
return -EEXIST;
}
inode = minix_new_inode(dir);
if (!inode) {
iput(dir);
return -ENOSPC;
}
inode->i_uid = current->euid;
inode->i_mode = (__u16) mode;
inode->i_op = NULL;
minix_set_ops(inode);
if (S_ISDIR(inode->i_mode))
if (dir->i_mode & S_ISGID)
inode->i_mode |= S_ISGID;
if (S_ISBLK(mode) || S_ISCHR(mode))
inode->i_rdev = to_kdev_t(rdev);
inode->i_dirt = 1;
error = minix_add_entry(dir, name, len, &bh, &de);
#if 1
if (error) {
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
iput(dir);
return error;
}
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
iput(dir);
iput(inode);
return 0;
#else /* MJN3: If the ordering of the iput()s isn't important, do this. */
if (error) {
inode->i_nlink--;
inode->i_dirt = 1;
} else {
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
brelse(bh);
}
iput(dir);
iput(inode);
return error;
#endif
}
int minix_mkdir(register struct inode *dir, char *name, size_t len, int mode)
{
int error;
register struct inode *inode;
struct buffer_head *dir_block;
struct buffer_head *bh;
struct minix_dir_entry *de;
if (!dir || !dir->i_sb) {
iput(dir);
return -EINVAL;
}
bh = minix_find_entry(dir, name, len, &de);
if (bh) {
brelse(bh);
iput(dir);
return -EEXIST;
}
if (dir->i_nlink >= MINIX_LINK_MAX) {
iput(dir);
return -EMLINK;
}
inode = minix_new_inode(dir);
if (!inode) {
iput(dir);
return -ENOSPC;
}
debug("m_mkdir: new_inode succeeded\n");
inode->i_op = &minix_dir_inode_operations;
inode->i_size = 2 * dir->i_sb->u.minix_sb.s_dirsize;
debug("m_mkdir: starting minix_bread\n");
dir_block = minix_bread(inode, 0, 1);
if (!dir_block) {
iput(dir);
inode->i_nlink--;
inode->i_dirt = 1;
iput(inode);
return -ENOSPC;
}
debug("m_mkdir: read succeeded\n");
map_buffer(dir_block);
de = (struct minix_dir_entry *) dir_block->b_data;
de->inode = inode->i_ino;
strcpy(de->name, ".");
de =
(struct minix_dir_entry *) (dir_block->b_data +
dir->i_sb->u.minix_sb.s_dirsize);
de->inode = dir->i_ino;
strcpy(de->name, "..");
inode->i_nlink = 2;
mark_buffer_dirty(dir_block, 1);
unmap_brelse(dir_block);
debug("m_mkdir: dir_block update succeeded\n");
inode->i_mode = S_IFDIR | (mode & 0777 & ~current->fs.umask);
if (dir->i_mode & S_ISGID)
inode->i_mode |= S_ISGID;
inode->i_dirt = 1;
error = minix_add_entry(dir, name, len, &bh, &de);
if (error) {
iput(dir);
inode->i_nlink = 0;
iput(inode);
return error;
}
map_buffer(bh);
de->inode = inode->i_ino;
mark_buffer_dirty(bh, 1);
dir->i_nlink++;
dir->i_dirt = 1;
iput(dir);
iput(inode);
unmap_brelse(bh);
debug("m_mkdir: done!\n");
return 0;
}
