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 void jfs_get_inode_flags(struct jfs_inode_info *jfs_ip) 49 { 50 unsigned int flags = jfs_ip->vfs_inode.i_flags; 51 52 jfs_ip->mode2 &= ~(JFS_IMMUTABLE_FL | JFS_APPEND_FL | JFS_NOATIME_FL | 53 JFS_DIRSYNC_FL | JFS_SYNC_FL); 54 if (flags & S_IMMUTABLE) 55 jfs_ip->mode2 |= JFS_IMMUTABLE_FL; 56 if (flags & S_APPEND) 57 jfs_ip->mode2 |= JFS_APPEND_FL; 58 if (flags & S_NOATIME) 59 jfs_ip->mode2 |= JFS_NOATIME_FL; 60 if (flags & S_DIRSYNC) 61 jfs_ip->mode2 |= JFS_DIRSYNC_FL; 62 if (flags & S_SYNC) 63 jfs_ip->mode2 |= JFS_SYNC_FL; 64 } 65 66 /* 67 * NAME: ialloc() 68 * 69 * FUNCTION: Allocate a new inode 70 * 71 */ 72 struct inode *ialloc(struct inode *parent, umode_t mode) 73 { 74 struct super_block *sb = parent->i_sb; 75 struct inode *inode; 76 struct jfs_inode_info *jfs_inode; 77 int rc; 78 79 inode = new_inode(sb); 80 if (!inode) { 81 jfs_warn("ialloc: new_inode returned NULL!"); 82 rc = -ENOMEM; 83 goto fail; 84 } 85 86 jfs_inode = JFS_IP(inode); 87 88 rc = diAlloc(parent, S_ISDIR(mode), inode); 89 if (rc) { 90 jfs_warn("ialloc: diAlloc returned %d!", rc); 91 if (rc == -EIO) 92 make_bad_inode(inode); 93 goto fail_put; 94 } 95 96 if (insert_inode_locked(inode) < 0) { 97 rc = -EINVAL; 98 goto fail_put; 99 } 100 101 inode_init_owner(inode, parent, mode); 102 /* 103 * New inodes need to save sane values on disk when 104 * uid & gid mount options are used 105 */ 106 jfs_inode->saved_uid = inode->i_uid; 107 jfs_inode->saved_gid = inode->i_gid; 108 109 /* 110 * Allocate inode to quota. 111 */ 112 rc = dquot_initialize(inode); 113 if (rc) 114 goto fail_drop; 115 rc = dquot_alloc_inode(inode); 116 if (rc) 117 goto fail_drop; 118 119 /* inherit flags from parent */ 120 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT; 121 122 if (S_ISDIR(mode)) { 123 jfs_inode->mode2 |= IDIRECTORY; 124 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL; 125 } 126 else { 127 jfs_inode->mode2 |= INLINEEA | ISPARSE; 128 if (S_ISLNK(mode)) 129 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL); 130 } 131 jfs_inode->mode2 |= inode->i_mode; 132 133 inode->i_blocks = 0; 134 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; 135 jfs_inode->otime = inode->i_ctime.tv_sec; 136 inode->i_generation = JFS_SBI(sb)->gengen++; 137 138 jfs_inode->cflag = 0; 139 140 /* Zero remaining fields */ 141 memset(&jfs_inode->acl, 0, sizeof(dxd_t)); 142 memset(&jfs_inode->ea, 0, sizeof(dxd_t)); 143 jfs_inode->next_index = 0; 144 jfs_inode->acltype = 0; 145 jfs_inode->btorder = 0; 146 jfs_inode->btindex = 0; 147 jfs_inode->bxflag = 0; 148 jfs_inode->blid = 0; 149 jfs_inode->atlhead = 0; 150 jfs_inode->atltail = 0; 151 jfs_inode->xtlid = 0; 152 jfs_set_inode_flags(inode); 153 154 jfs_info("ialloc returns inode = 0x%p\n", inode); 155 156 return inode; 157 158 fail_drop: 159 dquot_drop(inode); 160 inode->i_flags |= S_NOQUOTA; 161 clear_nlink(inode); 162 unlock_new_inode(inode); 163 fail_put: 164 iput(inode); 165 fail: 166 return ERR_PTR(rc); 167 } 168