static void rtems_jffs2_fsunmount(rtems_filesystem_mount_table_entry_t *mt_entry) { rtems_jffs2_fs_info *fs_info = mt_entry->fs_info; struct _inode *root_i = mt_entry->mt_fs_root->location.node_access; icache_evict(root_i, NULL); assert(root_i->i_cache_next == NULL); assert(root_i->i_count == 1); jffs2_iput(root_i); rtems_jffs2_free_directory_entries(root_i); free(root_i); rtems_jffs2_free_fs_info(fs_info, true); }
int jffs2_create(struct _inode *dir_i, const unsigned char *d_name, int mode, struct _inode **new_i) { struct jffs2_raw_inode *ri; struct jffs2_inode_info *f, *dir_f; struct jffs2_sb_info *c; struct _inode *inode; int ret; ri = jffs2_alloc_raw_inode(); if (!ri) return -ENOMEM; c = JFFS2_SB_INFO(dir_i->i_sb); D1(printk(KERN_DEBUG "jffs2_create()\n")); inode = jffs2_new_inode(dir_i, mode, ri); if (IS_ERR(inode)) { D1(printk(KERN_DEBUG "jffs2_new_inode() failed\n")); jffs2_free_raw_inode(ri); return PTR_ERR(inode); } f = JFFS2_INODE_INFO(inode); dir_f = JFFS2_INODE_INFO(dir_i); ret = jffs2_do_create(c, dir_f, f, ri, (const char *)d_name, strlen((char *)d_name)); if (ret) { inode->i_nlink = 0; jffs2_iput(inode); jffs2_free_raw_inode(ri); return ret; } jffs2_free_raw_inode(ri); D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d)\n", inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink)); *new_i = inode; return 0; }
static void rtems_jffs2_freenode(const rtems_filesystem_location_info_t *loc) { struct _inode *inode = rtems_jffs2_get_inode_by_location(loc); jffs2_iput(inode); }
static rtems_filesystem_eval_path_generic_status rtems_jffs2_eval_token( rtems_filesystem_eval_path_context_t *ctx, void *arg, const char *token, size_t tokenlen ) { rtems_filesystem_eval_path_generic_status status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_DONE; rtems_filesystem_location_info_t *currentloc = rtems_filesystem_eval_path_get_currentloc(ctx); struct _inode *dir_i = rtems_jffs2_get_inode_by_location(currentloc); bool access_ok = rtems_filesystem_eval_path_check_access( ctx, RTEMS_FS_PERMS_EXEC, dir_i->i_mode, dir_i->i_uid, dir_i->i_gid ); if (access_ok) { struct _inode *entry_i; if (rtems_filesystem_is_current_directory(token, tokenlen)) { entry_i = dir_i; ++entry_i->i_count; } else if (rtems_filesystem_is_parent_directory(token, tokenlen)) { entry_i = dir_i->i_parent; ++entry_i->i_count; } else { entry_i = jffs2_lookup(dir_i, token, (int) tokenlen); } if (IS_ERR(entry_i)) { rtems_filesystem_eval_path_error(ctx, PTR_ERR(entry_i)); } else if (entry_i != NULL) { bool terminal = !rtems_filesystem_eval_path_has_path(ctx); int eval_flags = rtems_filesystem_eval_path_get_flags(ctx); bool follow_sym_link = (eval_flags & RTEMS_FS_FOLLOW_SYM_LINK) != 0; rtems_filesystem_eval_path_clear_token(ctx); if (S_ISLNK(entry_i->i_mode) && (follow_sym_link || !terminal)) { struct jffs2_inode_info *f = JFFS2_INODE_INFO(entry_i); const char *target = f->target; rtems_filesystem_eval_path_recursive(ctx, target, strlen(target)); jffs2_iput(entry_i); } else { if (S_ISDIR(entry_i->i_mode) && entry_i->i_parent == NULL) { entry_i->i_parent = dir_i; ++dir_i->i_count; } jffs2_iput(dir_i); rtems_jffs2_set_location(currentloc, entry_i); if (rtems_filesystem_eval_path_has_path(ctx)) { status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_CONTINUE; } } } else { status = RTEMS_FILESYSTEM_EVAL_PATH_GENERIC_NO_ENTRY; } } return status; }
int jffs2_mkdir (struct _inode *dir_i, const unsigned char *d_name, int mode) { struct jffs2_inode_info *f, *dir_f; struct jffs2_sb_info *c; struct _inode *inode; struct jffs2_raw_inode *ri; struct jffs2_raw_dirent *rd; struct jffs2_full_dnode *fn; struct jffs2_full_dirent *fd; int namelen; uint32_t alloclen, phys_ofs; int ret; mode |= S_IFDIR; ri = jffs2_alloc_raw_inode(); if (!ri) return -ENOMEM; c = JFFS2_SB_INFO(dir_i->i_sb); /* Try to reserve enough space for both node and dirent. * Just the node will do for now, though */ namelen = strlen((char *)d_name); ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL); if (ret) { jffs2_free_raw_inode(ri); return ret; } inode = jffs2_new_inode(dir_i, mode, ri); if (IS_ERR(inode)) { jffs2_free_raw_inode(ri); jffs2_complete_reservation(c); return PTR_ERR(inode); } f = JFFS2_INODE_INFO(inode); ri->data_crc = cpu_to_je32(0); ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8)); fn = jffs2_write_dnode(c, f, ri, NULL, 0, phys_ofs, ALLOC_NORMAL); jffs2_free_raw_inode(ri); if (IS_ERR(fn)) { /* Eeek. Wave bye bye */ up(&f->sem); jffs2_complete_reservation(c); inode->i_nlink = 0; jffs2_iput(inode); return PTR_ERR(fn); } /* No data here. Only a metadata node, which will be obsoleted by the first data write */ f->metadata = fn; up(&f->sem); jffs2_complete_reservation(c); ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, ALLOC_NORMAL); if (ret) { /* Eep. */ inode->i_nlink = 0; jffs2_iput(inode); return ret; } rd = jffs2_alloc_raw_dirent(); if (!rd) { /* Argh. Now we treat it like a normal delete */ jffs2_complete_reservation(c); inode->i_nlink = 0; jffs2_iput(inode); return -ENOMEM; } dir_f = JFFS2_INODE_INFO(dir_i); down(&dir_f->sem); rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT); rd->totlen = cpu_to_je32(sizeof(*rd) + namelen); rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)); rd->pino = cpu_to_je32(dir_i->i_ino); rd->version = cpu_to_je32(++dir_f->highest_version); rd->ino = cpu_to_je32(inode->i_ino); rd->mctime = cpu_to_je32(jffs2_get_timestamp()); rd->nsize = namelen; rd->type = DT_DIR; rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8)); rd->name_crc = cpu_to_je32(crc32(0, d_name, namelen)); fd = jffs2_write_dirent(c, dir_f, rd, d_name, namelen, phys_ofs, ALLOC_NORMAL); jffs2_complete_reservation(c); jffs2_free_raw_dirent(rd); if (IS_ERR(fd)) { /* dirent failed to write. Delete the inode normally as if it were the final unlink() */ up(&dir_f->sem); inode->i_nlink = 0; jffs2_iput(inode); return PTR_ERR(fd); } /* Link the fd into the inode's list, obsoleting an old one if necessary. */ jffs2_add_fd_to_list(c, fd, &dir_f->dents); up(&dir_f->sem); jffs2_iput(inode); return 0; }