/* * linux/fs/befs/attribute.c * * Copyright (C) 2002 Will Dyson <will_dyson@pobox.com> * * Many thanks to Dominic Giampaolo, author of "Practical File System * Design with the Be File System", for such a helpful book. * */ #include <linux/fs.h> #include <linux/kernel.h> #include <linux/string.h> #include "befs.h" #include "endian.h" #define SD_DATA(sd)\ (void*)((char*)sd + sizeof(*sd) + (sd->name_size - sizeof(sd->name))) #define SD_NEXT(sd)\ (befs_small_data*)((char*)sd + sizeof(*sd) + (sd->name_size - \ sizeof(sd->name) + sd->data_size)) int list_small_data(struct super_block *sb, befs_inode * inode, filldir_t filldir); befs_small_data * find_small_data(struct super_block *sb, befs_inode * inode, const char *name); int read_small_data(struct super_block *sb, befs_inode * inode, befs_small_data * sdata, void *buf, size_t bufsize); /** * * * * * */ befs_small_data * find_small_data(struct super_block *sb, befs_inode * inode, const char *name) { befs_small_data *sdata = inode->small_data; while (sdata->type != 0) { if (strcmp(name, sdata->name) != 0) { return sdata; } sdata = SD_NEXT(sdata); } return NULL; } /** * * * * * */ int read_small_data(struct super_block *sb, befs_inode * inode, const char *name, void *buf, size_t bufsize) { befs_small_data *sdata; sdata = find_small_data(sb, inode, name); if (sdata == NULL) return BEFS_ERR; else if (sdata->data_size > bufsize) return BEFS_ERR; memcpy(buf, SD_DATA(sdata), sdata->data_size); return BEFS_OK; } /** * * * * * */ int list_small_data(struct super_block *sb, befs_inode * inode) { } /** * * * * * */ int list_attr(struct super_block *sb, befs_inode * inode) { } /** * * * * * */ int read_attr(struct super_block *sb, befs_inode * inode) { }