1652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei/* 2652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei * JFFS2 -- Journalling Flash File System, Version 2. 3aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei * 4c00c310eac04a28d2143368ae988716792ed53ceDavid Woodhouse * Copyright © 2006 NEC Corporation 5aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei * 6652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei * Created by KaiGai Kohei <kaigai@ak.jp.nec.com> 7652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei * 8652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei * For licensing information, see the file 'LICENCE' in this directory. 9652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei * 10652ecc20d1f5b4fd745c185c940e5b3afb2a0711KaiGai Kohei */ 11c00c310eac04a28d2143368ae988716792ed53ceDavid Woodhouse 12aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei#include <linux/kernel.h> 13aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei#include <linux/fs.h> 14aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei#include <linux/jffs2.h> 15aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei#include <linux/xattr.h> 16aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei#include <linux/mtd/mtd.h> 17aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei#include "nodelist.h" 18aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei 19431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwigstatic int jffs2_user_getxattr(struct dentry *dentry, const char *name, 20431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig void *buffer, size_t size, int type) 21aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei{ 22aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei if (!strcmp(name, "")) 23aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei return -EINVAL; 24431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_USER, 25431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig name, buffer, size); 26aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei} 27aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei 28431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwigstatic int jffs2_user_setxattr(struct dentry *dentry, const char *name, 29431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig const void *buffer, size_t size, int flags, int type) 30aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei{ 31aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei if (!strcmp(name, "")) 32aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei return -EINVAL; 33431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_USER, 34431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig name, buffer, size, flags); 35aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei} 36aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei 37431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwigstatic size_t jffs2_user_listxattr(struct dentry *dentry, char *list, 38431547b3c4533b8c7fd150ab36980b9a3147797bChristoph Hellwig size_t list_size, const char *name, size_t name_len, int type) 39aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei{ 40aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1; 41aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei 42aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei if (list && retlen <= list_size) { 43aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei strcpy(list, XATTR_USER_PREFIX); 44aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei strcpy(list + XATTR_USER_PREFIX_LEN, name); 45aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei } 46aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei 47aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei return retlen; 48aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei} 49aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei 50365f0cb9d2d5eea911798935133e8dd27ea5f3fcStephen Hemmingerconst struct xattr_handler jffs2_user_xattr_handler = { 51aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei .prefix = XATTR_USER_PREFIX, 52aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei .list = jffs2_user_listxattr, 53aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei .set = jffs2_user_setxattr, 54aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei .get = jffs2_user_getxattr 55aa98d7cf59b5b0764d3502662053489585faf2feKaiGai Kohei}; 56