From a1df417e74aa6dae7352dc8cbb0ad471af5b7c69 Mon Sep 17 00:00:00 2001 From: "Michael J. Chudobiak" Date: Mon, 25 Apr 2016 10:00:44 -0400 Subject: initial Olimex linux tree from Daniel, originally Feb 3, 2016 --- linux/fs/ext3/xattr_user.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 linux/fs/ext3/xattr_user.c (limited to 'linux/fs/ext3/xattr_user.c') diff --git a/linux/fs/ext3/xattr_user.c b/linux/fs/ext3/xattr_user.c new file mode 100644 index 00000000..021508ad --- /dev/null +++ b/linux/fs/ext3/xattr_user.c @@ -0,0 +1,58 @@ +/* + * linux/fs/ext3/xattr_user.c + * Handler for extended user attributes. + * + * Copyright (C) 2001 by Andreas Gruenbacher, + */ + +#include "ext3.h" +#include "xattr.h" + +static size_t +ext3_xattr_user_list(struct dentry *dentry, char *list, size_t list_size, + const char *name, size_t name_len, int type) +{ + const size_t prefix_len = XATTR_USER_PREFIX_LEN; + const size_t total_len = prefix_len + name_len + 1; + + if (!test_opt(dentry->d_sb, XATTR_USER)) + return 0; + + if (list && total_len <= list_size) { + memcpy(list, XATTR_USER_PREFIX, prefix_len); + memcpy(list+prefix_len, name, name_len); + list[prefix_len + name_len] = '\0'; + } + return total_len; +} + +static int +ext3_xattr_user_get(struct dentry *dentry, const char *name, void *buffer, + size_t size, int type) +{ + if (strcmp(name, "") == 0) + return -EINVAL; + if (!test_opt(dentry->d_sb, XATTR_USER)) + return -EOPNOTSUPP; + return ext3_xattr_get(d_inode(dentry), EXT3_XATTR_INDEX_USER, + name, buffer, size); +} + +static int +ext3_xattr_user_set(struct dentry *dentry, const char *name, + const void *value, size_t size, int flags, int type) +{ + if (strcmp(name, "") == 0) + return -EINVAL; + if (!test_opt(dentry->d_sb, XATTR_USER)) + return -EOPNOTSUPP; + return ext3_xattr_set(d_inode(dentry), EXT3_XATTR_INDEX_USER, + name, value, size, flags); +} + +const struct xattr_handler ext3_xattr_user_handler = { + .prefix = XATTR_USER_PREFIX, + .list = ext3_xattr_user_list, + .get = ext3_xattr_user_get, + .set = ext3_xattr_user_set, +}; -- cgit