1 /* 2 * Copyright (C) International Business Machines Corp., 2000-2004 3 * 4 * This program is free software; you can redistribute it and/or modify 5 * it under the terms of the GNU General Public License as published by 6 * the Free Software Foundation; either version 2 of the License, or 7 * (at your option) any later version. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 12 * the GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 */ 18 19 #include <linux/fs.h> 20 #include <linux/quotaops.h> 21 #include "jfs_incore.h" 22 #include "jfs_filsys.h" 23 #include "jfs_imap.h" 24 #include "jfs_dinode.h" 25 #include "jfs_debug.h" 26 27 /* 28 * NAME: ialloc() 29 * 30 * FUNCTION: Allocate a new inode 31 * 32 */ 33 struct inode *ialloc(struct inode *parent, umode_t mode) 34 { 35 struct super_block *sb = parent->i_sb; 36 struct inode *inode; 37 struct jfs_inode_info *jfs_inode; 38 int rc; 39 40 inode = new_inode(sb); 41 if (!inode) { 42 jfs_warn("ialloc: new_inode returned NULL!"); 43 return inode; 44 } 45 46 jfs_inode = JFS_IP(inode); 47 48 rc = diAlloc(parent, S_ISDIR(mode), inode); 49 if (rc) { 50 jfs_warn("ialloc: diAlloc returned %d!", rc); 51 make_bad_inode(inode); 52 iput(inode); 53 return NULL; 54 } 55 56 inode->i_uid = current->fsuid; 57 if (parent->i_mode & S_ISGID) { 58 inode->i_gid = parent->i_gid; 59 if (S_ISDIR(mode)) 60 mode |= S_ISGID; 61 } else 62 inode->i_gid = current->fsgid; 63 64 /* 65 * Allocate inode to quota. 66 */ 67 if (DQUOT_ALLOC_INODE(inode)) { 68 DQUOT_DROP(inode); 69 inode->i_flags |= S_NOQUOTA; 70 inode->i_nlink = 0; 71 iput(inode); 72 return NULL; 73 } 74 75 inode->i_mode = mode; 76 if (S_ISDIR(mode)) 77 jfs_inode->mode2 = IDIRECTORY | mode; 78 else 79 jfs_inode->mode2 = INLINEEA | ISPARSE | mode; 80 inode->i_blksize = sb->s_blocksize; 81 inode->i_blocks = 0; 82 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; 83 jfs_inode->otime = inode->i_ctime.tv_sec; 84 inode->i_generation = JFS_SBI(sb)->gengen++; 85 86 jfs_inode->cflag = 0; 87 88 /* Zero remaining fields */ 89 memset(&jfs_inode->acl, 0, sizeof(dxd_t)); 90 memset(&jfs_inode->ea, 0, sizeof(dxd_t)); 91 jfs_inode->next_index = 0; 92 jfs_inode->acltype = 0; 93 jfs_inode->btorder = 0; 94 jfs_inode->btindex = 0; 95 jfs_inode->bxflag = 0; 96 jfs_inode->blid = 0; 97 jfs_inode->atlhead = 0; 98 jfs_inode->atltail = 0; 99 jfs_inode->xtlid = 0; 100 101 jfs_info("ialloc returns inode = 0x%p\n", inode); 102 103 return inode; 104 } 105