mirror of https://gitee.com/openkylin/linux.git
72 lines
1.7 KiB
C
72 lines
1.7 KiB
C
/*
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* linux/fs/hfsplus/xattr_trusted.c
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*
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* Vyacheslav Dubeyko <slava@dubeyko.com>
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*
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* Handler for trusted extended attributes.
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*/
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#include <linux/nls.h>
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#include "hfsplus_fs.h"
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#include "xattr.h"
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static int hfsplus_trusted_getxattr(struct dentry *dentry, const char *name,
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void *buffer, size_t size, int type)
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{
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char *xattr_name;
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int res;
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if (!strcmp(name, ""))
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return -EINVAL;
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xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
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GFP_KERNEL);
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if (!xattr_name)
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return -ENOMEM;
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strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
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strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
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res = hfsplus_getxattr(dentry, xattr_name, buffer, size);
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kfree(xattr_name);
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return res;
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}
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static int hfsplus_trusted_setxattr(struct dentry *dentry, const char *name,
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const void *buffer, size_t size, int flags, int type)
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{
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char *xattr_name;
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int res;
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if (!strcmp(name, ""))
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return -EINVAL;
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xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
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GFP_KERNEL);
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if (!xattr_name)
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return -ENOMEM;
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strcpy(xattr_name, XATTR_TRUSTED_PREFIX);
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strcpy(xattr_name + XATTR_TRUSTED_PREFIX_LEN, name);
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res = hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
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kfree(xattr_name);
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return res;
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}
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static size_t hfsplus_trusted_listxattr(struct dentry *dentry, char *list,
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size_t list_size, const char *name, size_t name_len, int type)
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{
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/*
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* This method is not used.
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* It is used hfsplus_listxattr() instead of generic_listxattr().
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*/
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return -EOPNOTSUPP;
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}
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const struct xattr_handler hfsplus_xattr_trusted_handler = {
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.prefix = XATTR_TRUSTED_PREFIX,
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.list = hfsplus_trusted_listxattr,
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.get = hfsplus_trusted_getxattr,
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.set = hfsplus_trusted_setxattr,
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};
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