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_inode.h" 23 #include "jfs_filsys.h" 24 #include "jfs_imap.h" 25 #include "jfs_dinode.h" 26 #include "jfs_debug.h" 27 28 29 void jfs_set_inode_flags(struct inode *inode) 30 { 31 unsigned int flags = JFS_IP(inode)->mode2; 32 unsigned int new_fl = 0; 33 34 if (flags & JFS_IMMUTABLE_FL) 35 new_fl |= S_IMMUTABLE; 36 if (flags & JFS_APPEND_FL) 37 new_fl |= S_APPEND; 38 if (flags & JFS_NOATIME_FL) 39 new_fl |= S_NOATIME; 40 if (flags & JFS_DIRSYNC_FL) 41 new_fl |= S_DIRSYNC; 42 if (flags & JFS_SYNC_FL) 43 new_fl |= S_SYNC; 44 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME | 45 S_DIRSYNC | S_SYNC); 46 } 47 48 /* 49 * NAME: ialloc() 50 * 51 * FUNCTION: Allocate a new inode 52 * 53 */ 54 struct inode *ialloc(struct inode *parent, umode_t mode) 55 { 56 struct super_block *sb = parent->i_sb; 57 struct inode *inode; 58 struct jfs_inode_info *jfs_inode; 59 int rc; 60 61 inode = new_inode(sb); 62 if (!inode) { 63 jfs_warn("ialloc: new_inode returned NULL!"); 64 return ERR_PTR(-ENOMEM); 65 } 66 67 jfs_inode = JFS_IP(inode); 68 69 rc = diAlloc(parent, S_ISDIR(mode), inode); 70 if (rc) { 71 jfs_warn("ialloc: diAlloc returned %d!", rc); 72 goto fail_put; 73 } 74 75 if (insert_inode_locked(inode) < 0) { 76 rc = -EINVAL; 77 goto fail_put; 78 } 79 80 inode_init_owner(inode, parent, mode); 81 /* 82 * New inodes need to save sane values on disk when 83 * uid & gid mount options are used 84 */ 85 jfs_inode->saved_uid = inode->i_uid; 86 jfs_inode->saved_gid = inode->i_gid; 87 88 /* 89 * Allocate inode to quota. 90 */ 91 rc = dquot_initialize(inode); 92 if (rc) 93 goto fail_drop; 94 rc = dquot_alloc_inode(inode); 95 if (rc) 96 goto fail_drop; 97 98 /* inherit flags from parent */ 99 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT; 100 101 if (S_ISDIR(mode)) { 102 jfs_inode->mode2 |= IDIRECTORY; 103 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL; 104 } 105 else { 106 jfs_inode->mode2 |= INLINEEA | ISPARSE; 107 if (S_ISLNK(mode)) 108 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL); 109 } 110 jfs_inode->mode2 |= inode->i_mode; 111 112 inode->i_blocks = 0; 113 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); 114 jfs_inode->otime = inode->i_ctime.tv_sec; 115 inode->i_generation = JFS_SBI(sb)->gengen++; 116 117 jfs_inode->cflag = 0; 118 119 /* Zero remaining fields */ 120 memset(&jfs_inode->acl, 0, sizeof(dxd_t)); 121 memset(&jfs_inode->ea, 0, sizeof(dxd_t)); 122 jfs_inode->next_index = 0; 123 jfs_inode->acltype = 0; 124 jfs_inode->btorder = 0; 125 jfs_inode->btindex = 0; 126 jfs_inode->bxflag = 0; 127 jfs_inode->blid = 0; 128 jfs_inode->atlhead = 0; 129 jfs_inode->atltail = 0; 130 jfs_inode->xtlid = 0; 131 jfs_set_inode_flags(inode); 132 133 jfs_info("ialloc returns inode = 0x%p", inode); 134 135 return inode; 136 137 fail_drop: 138 dquot_drop(inode); 139 inode->i_flags |= S_NOQUOTA; 140 clear_nlink(inode); 141 discard_new_inode(inode); 142 return ERR_PTR(rc); 143 144 fail_put: 145 iput(inode); 146 return ERR_PTR(rc); 147 } 148