Unverified Commit 458532c8 authored by André Almeida's avatar André Almeida Committed by Christian Brauner
Browse files

libfs: Export generic_ci_ dentry functions 



Export generic_ci_ dentry functions so they can be used by
case-insensitive filesystems that need something more custom than the
default one set by `struct generic_ci_dentry_ops`.

Reviewed-by: default avatarGabriel Krisman Bertazi <gabriel@krisman.be>
Signed-off-by: default avatarAndré Almeida <andrealmeid@igalia.com>
Link: https://lore.kernel.org/r/20241021-tonyk-tmpfs-v8-5-f443d5814194@igalia.com


Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 142fa60f

fs/libfs.c

+5 −3
Original line number Diff line number Diff line
@@ -1791,7 +1791,7 @@ bool is_empty_dir_inode(struct inode *inode) 
 *

 * Return: 0 if names match, 1 if mismatch, or -ERRNO

 */

static int generic_ci_d_compare(const struct dentry *dentry, unsigned int len,

int generic_ci_d_compare(const struct dentry *dentry, unsigned int len,

			 const char *str, const struct qstr *name)

{

	const struct dentry *parent;
@@ -1835,6 +1835,7 @@ static int generic_ci_d_compare(const struct dentry *dentry, unsigned int len, 


	return utf8_strncasecmp(dentry->d_sb->s_encoding, name, &qstr);

}

EXPORT_SYMBOL(generic_ci_d_compare);



/**

 * generic_ci_d_hash - generic d_hash implementation for casefolding filesystems
@@ -1843,7 +1844,7 @@ static int generic_ci_d_compare(const struct dentry *dentry, unsigned int len, 
 *

 * Return: 0 if hash was successful or unchanged, and -EINVAL on error

 */

static int generic_ci_d_hash(const struct dentry *dentry, struct qstr *str)

int generic_ci_d_hash(const struct dentry *dentry, struct qstr *str)

{

	const struct inode *dir = READ_ONCE(dentry->d_inode);

	struct super_block *sb = dentry->d_sb;
@@ -1858,6 +1859,7 @@ static int generic_ci_d_hash(const struct dentry *dentry, struct qstr *str) 
		return -EINVAL;

	return 0;

}

EXPORT_SYMBOL(generic_ci_d_hash);



static const struct dentry_operations generic_ci_dentry_ops = {

	.d_hash = generic_ci_d_hash,

include/linux/fs.h

+4 −0
Original line number Diff line number Diff line
@@ -3458,6 +3458,10 @@ extern int generic_ci_match(const struct inode *parent, 
			    const u8 *de_name, u32 de_name_len);



#if IS_ENABLED(CONFIG_UNICODE)

int generic_ci_d_hash(const struct dentry *dentry, struct qstr *str);

int generic_ci_d_compare(const struct dentry *dentry, unsigned int len,

			 const char *str, const struct qstr *name);



/**

 * generic_ci_validate_strict_name - Check if a given name is suitable

 * for a directory