Ejemplos de fat_build_inode en C++ (Cpp)

Ejemplo n.º 1

Archivo: namei.c Proyecto: xiandaicxsj/copyKvm

/***** Get inode using directory and name */
static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
				   struct nameidata *nd)
{
	struct super_block *sb = dir->i_sb;
	struct fat_slot_info sinfo;
	struct inode *inode = NULL;
	int res;

	dentry->d_op = &msdos_dentry_operations;

	lock_kernel();
	res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
	if (res == -ENOENT)
		goto add;
	if (res < 0)
		goto out;
	inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
	brelse(sinfo.bh);
	if (IS_ERR(inode)) {
		res = PTR_ERR(inode);
		goto out;
	}
add:
	res = 0;
	dentry = d_splice_alias(inode, dentry);
	if (dentry)
		dentry->d_op = &msdos_dentry_operations;
out:
	unlock_kernel();
	if (!res)
		return dentry;
	return ERR_PTR(res);
}

Ejemplo n.º 2

Archivo: namei.c Proyecto: jameshilliard/actiontec_opensrc_mi424wr-rev-e-f_fw-20-10-7-5

/***** Create a file */
int msdos_create(struct inode *dir,struct dentry *dentry,int mode)
{
	struct super_block *sb = dir->i_sb;
	struct buffer_head *bh;
	struct msdos_dir_entry *de;
	struct inode *inode;
	int res,is_hid;
	loff_t ino;
	char msdos_name[MSDOS_NAME];

	res = msdos_format_name(dentry->d_name.name,dentry->d_name.len,
				msdos_name, &MSDOS_SB(sb)->options);
	if (res < 0)
		return res;
	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,&bh,&de,&ino) >= 0) {
		fat_brelse(sb, bh);
		return -EINVAL;
 	}
	inode = NULL;
	res = msdos_add_entry(dir, msdos_name, &bh, &de, &ino, 0, is_hid);
	if (res)
		return res;
	inode = fat_build_inode(dir->i_sb, de, ino, &res);
	fat_brelse(sb, bh);
	if (!inode)
		return res;
	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
	mark_inode_dirty(inode);
	d_instantiate(dentry, inode);
	return 0;
}

Ejemplo n.º 3

Archivo: namei.c Proyecto: jameshilliard/actiontec_opensrc_mi424wr-rev-e-f_fw-20-10-7-5

/***** Get inode using directory and name */
struct dentry *msdos_lookup(struct inode *dir,struct dentry *dentry)
{
	struct super_block *sb = dir->i_sb;
	struct inode *inode = NULL;
	struct msdos_dir_entry *de;
	struct buffer_head *bh = NULL;
	int res;
	loff_t ino;
	
	PRINTK (("msdos_lookup\n"));

	dentry->d_op = &msdos_dentry_operations;

	res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &bh,
			&de, &ino);

	if (res == -ENOENT)
		goto add;
	if (res < 0)
		goto out;
	inode = fat_build_inode(sb, de, ino, &res);
	if (res)
		goto out;
add:
	d_add(dentry, inode);
	res = 0;
out:
	if (bh)
		fat_brelse(sb, bh);
	return ERR_PTR(res);
}

Ejemplo n.º 4

Archivo: namei.c Proyecto: xricson/knoppix

/***** Get inode using directory and name */
struct dentry *msdos_lookup(struct inode *dir,struct dentry *dentry, struct nameidata *nd)
{
	struct super_block *sb = dir->i_sb;
	struct inode *inode = NULL;
	struct msdos_dir_entry *de;
	struct buffer_head *bh = NULL;
	loff_t i_pos;
	int res;
	
	dentry->d_op = &msdos_dentry_operations;

	lock_kernel();
	res = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &bh,
			 &de, &i_pos);
	if (res == -ENOENT)
		goto add;
	if (res < 0)
		goto out;
	inode = fat_build_inode(sb, de, i_pos, &res);
	if (res)
		goto out;
add:
	res = 0;
	dentry = d_splice_alias(inode, dentry);
	if (dentry)
		dentry->d_op = &msdos_dentry_operations;
out:
	brelse(bh);
	unlock_kernel();
	if (!res)
		return dentry;
	return ERR_PTR(res);
}

Ejemplo n.º 5

Archivo: namei_msdos.c Proyecto: 119-org/hi3518-osdrv

/***** Get inode using directory and name */
static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
				   struct nameidata *nd)
{
	struct super_block *sb = dir->i_sb;
	struct fat_slot_info sinfo;
	struct inode *inode;
	int err;

	lock_super(sb);

	err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
	if (err) {
		if (err == -ENOENT) {
			inode = NULL;
			goto out;
		}
		goto error;
	}

	inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);
	brelse(sinfo.bh);
	if (IS_ERR(inode)) {
		err = PTR_ERR(inode);
		goto error;
	}
out:
	unlock_super(sb);
	return d_splice_alias(inode, dentry);

error:
	unlock_super(sb);
	return ERR_PTR(err);
}

Ejemplo n.º 6

Archivo: vxext.c Proyecto: jens-maus/vxext_fs

/***** Make a directory */
static int vxext_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 = vxext_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_SEC;
	cluster = fat_alloc_new_dir(dir, &ts);
	if (cluster < 0) {
		err = cluster;
		goto out;
	}
	err = vxext_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;
}

Ejemplo n.º 7

Archivo: namei_msdos.c Proyecto: romanbb/android_kernel_lge_d851

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;

	lock_super(sb);

	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] != '.');
	/*                       */
	if (!fat_scan(dir, msdos_name, &sinfo)) {
		brelse(sinfo.bh);
		err = -EINVAL;
		goto out;
	}

	ts = CURRENT_TIME_SEC;
	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);
		/*                                                  */
		goto out;
	}
	set_nlink(inode, 2);
	inode->i_mtime = inode->i_atime = inode->i_ctime = ts;
	/*                                                                  */

	d_instantiate(dentry, inode);

	unlock_super(sb);
	fat_flush_inodes(sb, dir, inode);
	return 0;

out_free:
	fat_free_clusters(dir, cluster);
out:
	unlock_super(sb);
	return err;
}

Ejemplo n.º 8

Archivo: vxext.c Proyecto: jens-maus/vxext_fs

/***** Create a file */
static int vxext_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 = vxext_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_SEC;
	err = vxext_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;
}

Ejemplo n.º 9

Archivo: namei_msdos.c Proyecto: romanbb/android_kernel_lge_d851

static int msdos_create(struct inode *dir, struct dentry *dentry, umode_t mode,
			struct nameidata *nd)
{
	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;

	lock_super(sb);

	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] != '.');
	/*                                             */
	if (!fat_scan(dir, msdos_name, &sinfo)) {
		brelse(sinfo.bh);
		err = -EINVAL;
		goto out;
	}

	ts = CURRENT_TIME_SEC;
	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;
	/*                                                                  */

	d_instantiate(dentry, inode);
out:
	unlock_super(sb);
	if (!err)
		err = fat_flush_inodes(sb, dir, inode);
	return err;
}

Ejemplo n.º 10

Archivo: msdos_inode.c Proyecto: alex-ren/ATS_LDD

/***** Get inode using directory and name */
static struct dentry *msdos_lookup(struct inode *dir, struct dentry *dentry,
				   struct nameidata *nd)
{
	struct super_block *sb = dir->i_sb;
	struct fat_slot_info sinfo;
	struct inode *inode;
	int err;

        char szBuffer[20];
        int len = min((int)dentry->d_name.len, 19);
        memset(szBuffer, 0, 20);
        __memcpy(szBuffer, dentry->d_name.name, len);
        printk (KERN_INFO "myfat: msdos_lookup, dir is %s\n", szBuffer);

	lock_super(sb);

	err = msdos_find(dir, dentry->d_name.name, dentry->d_name.len, &sinfo);
	if (err) {
		if (err == -ENOENT) {
			inode = NULL;
			goto out;
		}
		goto error;
	}

	inode = fat_build_inode(sb, sinfo.de, sinfo.i_pos);  // by rzq: hold the reference count
	brelse(sinfo.bh);
	if (IS_ERR(inode)) {
		err = PTR_ERR(inode);
		goto error;
	}
out:
	unlock_super(sb);
	dentry->d_op = &msdos_dentry_operations;
	dentry = d_splice_alias(inode, dentry);
	if (dentry)
		dentry->d_op = &msdos_dentry_operations;
	return dentry;

error:
	unlock_super(sb);
	return ERR_PTR(err);
}

Ejemplo n.º 11

Archivo: vxext.c Proyecto: jens-maus/vxext_fs

/***** Get inode using directory and name */
static struct dentry *vxext_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 = vxext_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);
}

Ejemplo n.º 12

Archivo: namei_msdos.c Proyecto: romanbb/android_kernel_lge_d851

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

	lock_super(sb);
	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);
	}
	unlock_super(sb);
	return d_splice_alias(inode, dentry);
}

Ejemplo n.º 13

Archivo: namei.c Proyecto: jameshilliard/actiontec_opensrc_mi424wr-rev-e-f_fw-20-10-7-5

/***** Make a directory */
int msdos_mkdir(struct inode *dir,struct dentry *dentry,int mode)
{
	struct super_block *sb = dir->i_sb;
	struct buffer_head *bh;
	struct msdos_dir_entry *de;
	struct inode *inode;
	int res,is_hid;
	char msdos_name[MSDOS_NAME];
	loff_t ino;

	res = msdos_format_name(dentry->d_name.name,dentry->d_name.len,
				msdos_name, &MSDOS_SB(sb)->options);
	if (res < 0)
		return res;
	is_hid = (dentry->d_name.name[0]=='.') && (msdos_name[0]!='.');
	/* foo vs .foo situation */
	if (fat_scan(dir,msdos_name,&bh,&de,&ino) >= 0)
		goto out_exist;

	res = msdos_add_entry(dir, msdos_name, &bh, &de, &ino, 1, is_hid);
	if (res)
		goto out_unlock;
	inode = fat_build_inode(dir->i_sb, de, ino, &res);
	if (!inode) {
		fat_brelse(sb, bh);
		goto out_unlock;
	}
	res = 0;

	dir->i_nlink++;
	inode->i_nlink = 2; /* no need to mark them dirty */

	res = fat_new_dir(inode, dir, 0);
	if (res)
		goto mkdir_error;

	fat_brelse(sb, bh);
	d_instantiate(dentry, inode);
	res = 0;

out_unlock:
	return res;

mkdir_error:
	printk(KERN_WARNING "msdos_mkdir: error=%d, attempting cleanup\n", res);
	inode->i_nlink = 0;
	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
	dir->i_nlink--;
	mark_inode_dirty(inode);
	mark_inode_dirty(dir);
	de->name[0] = DELETED_FLAG;
	fat_mark_buffer_dirty(sb, bh);
	fat_brelse(sb, bh);
	fat_detach(inode);
	iput(inode);
	goto out_unlock;

out_exist:
	fat_brelse(sb, bh);
	res = -EINVAL;
	goto out_unlock;
}

Ejemplo n.º 14

Archivo: namei.c Proyecto: xricson/knoppix

/***** Make a directory */
int msdos_mkdir(struct inode *dir,struct dentry *dentry,int mode)
{
	struct super_block *sb = dir->i_sb;
	struct buffer_head *bh;
	struct msdos_dir_entry *de;
	struct inode *inode;
	int res,is_hid;
	unsigned char msdos_name[MSDOS_NAME];
	loff_t i_pos;

	lock_kernel();
	res = msdos_format_name(dentry->d_name.name,dentry->d_name.len,
				msdos_name, &MSDOS_SB(sb)->options);
	if (res < 0) {
		unlock_kernel();
		return res;
	}
	is_hid = (dentry->d_name.name[0]=='.') && (msdos_name[0]!='.');
	/* foo vs .foo situation */
	if (fat_scan(dir, msdos_name, &bh, &de, &i_pos) >= 0)
		goto out_exist;

	res = msdos_add_entry(dir, msdos_name, &bh, &de, &i_pos, 1, is_hid);
	if (res)
		goto out_unlock;
	inode = fat_build_inode(dir->i_sb, de, i_pos, &res);
	if (!inode) {
		brelse(bh);
		goto out_unlock;
	}
	res = 0;

	dir->i_nlink++;
	inode->i_nlink = 2; /* no need to mark them dirty */

	res = fat_new_dir(inode, dir, 0);
	if (res)
		goto mkdir_error;

	brelse(bh);
	d_instantiate(dentry, inode);
	res = 0;

out_unlock:
	unlock_kernel();
	return res;

mkdir_error:
	inode->i_nlink = 0;
	inode->i_ctime = dir->i_ctime = dir->i_mtime = CURRENT_TIME;
	dir->i_nlink--;
	mark_inode_dirty(inode);
	mark_inode_dirty(dir);
	de->name[0] = DELETED_FLAG;
	mark_buffer_dirty(bh);
	brelse(bh);
	fat_detach(inode);
	iput(inode);
	goto out_unlock;

out_exist:
	brelse(bh);
	res = -EINVAL;
	goto out_unlock;
}