41  *	1. A case-sensitive variable name
42  *	2. A case-insensitive GUID
44  * So we need to perform a case-sensitive match on part 1 and a
45  * case-insensitive match on part 2.
49 			      const struct qstr *name)  in efivarfs_d_compare()  argument
51 	int guid = len - EFI_VARIABLE_GUID_LEN;  in efivarfs_d_compare()
53 	if (name->len != len)  in efivarfs_d_compare()
56 	/* Case-sensitive compare for the variable name */  in efivarfs_d_compare()
57 	if (memcmp(str, name->name, guid))  in efivarfs_d_compare()
60 	/* Case-insensitive compare for the GUID */  in efivarfs_d_compare()
61 	return strncasecmp(name->name + guid, str + guid, EFI_VARIABLE_GUID_LEN);  in efivarfs_d_compare()
67 	const unsigned char *s = qstr->name;  in efivarfs_d_hash()
68 	unsigned int len = qstr->len;  in efivarfs_d_hash()
71 		return -EINVAL;  in efivarfs_d_hash()
73 	while (len-- > EFI_VARIABLE_GUID_LEN)  in efivarfs_d_hash()
76 	/* GUID is case-insensitive. */  in efivarfs_d_hash()
77 	while (len--)  in efivarfs_d_hash()
80 	qstr->hash = end_name_hash(hash);  in efivarfs_d_hash()
90 static struct dentry *efivarfs_alloc_dentry(struct dentry *parent, char *name)  in efivarfs_alloc_dentry()  argument
96 	q.name = name;  in efivarfs_alloc_dentry()
97 	q.len = strlen(name);  in efivarfs_alloc_dentry()
107 	return ERR_PTR(-ENOMEM);  in efivarfs_alloc_dentry()
114 	struct efivar_entry *entry;  in efivarfs_callback()  local
116 	struct dentry *dentry, *root = sb->s_root;  in efivarfs_callback()
118 	char *name;  in efivarfs_callback()  local
120 	int err = -ENOMEM;  in efivarfs_callback()
123 	entry = kzalloc(sizeof(*entry), GFP_KERNEL);  in efivarfs_callback()
124 	if (!entry)  in efivarfs_callback()
127 	memcpy(entry->var.VariableName, name16, name_size);  in efivarfs_callback()
128 	memcpy(&(entry->var.VendorGuid), &vendor, sizeof(efi_guid_t));  in efivarfs_callback()
130 	len = ucs2_utf8size(entry->var.VariableName);  in efivarfs_callback()
132 	/* name, plus '-', plus GUID, plus NUL*/  in efivarfs_callback()
133 	name = kmalloc(len + 1 + EFI_VARIABLE_GUID_LEN + 1, GFP_KERNEL);  in efivarfs_callback()
134 	if (!name)  in efivarfs_callback()
137 	ucs2_as_utf8(name, entry->var.VariableName, len);  in efivarfs_callback()
139 	if (efivar_variable_is_removable(entry->var.VendorGuid, name, len))  in efivarfs_callback()
142 	name[len] = '-';  in efivarfs_callback()
144 	efi_guid_to_str(&entry->var.VendorGuid, name + len + 1);  in efivarfs_callback()
146 	name[len + EFI_VARIABLE_GUID_LEN+1] = '\0';  in efivarfs_callback()
149 	strreplace(name, '/', '!');  in efivarfs_callback()
156 	dentry = efivarfs_alloc_dentry(root, name);  in efivarfs_callback()
162 	efivar_entry_size(entry, &size);  in efivarfs_callback()
163 	err = efivar_entry_add(entry, &efivarfs_list);  in efivarfs_callback()
168 	kfree(name);  in efivarfs_callback()
171 	inode->i_private = entry;  in efivarfs_callback()
172 	i_size_write(inode, size + sizeof(entry->var.Attributes));  in efivarfs_callback()
181 	kfree(name);  in efivarfs_callback()
183 	kfree(entry);  in efivarfs_callback()
187 static int efivarfs_destroy(struct efivar_entry *entry, void *data)  in efivarfs_destroy()  argument
189 	int err = efivar_entry_remove(entry);  in efivarfs_destroy()
193 	kfree(entry);  in efivarfs_destroy()
205 	sb->s_maxbytes          = MAX_LFS_FILESIZE;  in efivarfs_fill_super()
206 	sb->s_blocksize         = PAGE_SIZE;  in efivarfs_fill_super()
207 	sb->s_blocksize_bits    = PAGE_SHIFT;  in efivarfs_fill_super()
208 	sb->s_magic             = EFIVARFS_MAGIC;  in efivarfs_fill_super()
209 	sb->s_op                = &efivarfs_ops;  in efivarfs_fill_super()
210 	sb->s_d_op		= &efivarfs_d_ops;  in efivarfs_fill_super()
211 	sb->s_time_gran         = 1;  in efivarfs_fill_super()
215 		return -ENOMEM;  in efivarfs_fill_super()
216 	inode->i_op = &efivarfs_dir_inode_operations;  in efivarfs_fill_super()
219 	sb->s_root = root;  in efivarfs_fill_super()
221 		return -ENOMEM;  in efivarfs_fill_super()
249 	.name    = "efivarfs",
257 		return -ENODEV;  in efivarfs_init()
260 		return -ENODEV;  in efivarfs_init()