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 33 inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | 34 S_NOATIME | S_DIRSYNC | S_SYNC); 35 36 if (flags & JFS_IMMUTABLE_FL) 37 inode->i_flags |= S_IMMUTABLE; 38 if (flags & JFS_APPEND_FL) 39 inode->i_flags |= S_APPEND; 40 if (flags & JFS_NOATIME_FL) 41 inode->i_flags |= S_NOATIME; 42 if (flags & JFS_DIRSYNC_FL) 43 inode->i_flags |= S_DIRSYNC; 44 if (flags & JFS_SYNC_FL) 45 inode->i_flags |= 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 inode; 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 make_bad_inode(inode); 73 iput(inode); 74 return NULL; 75 } 76 77 inode->i_uid = current->fsuid; 78 if (parent->i_mode & S_ISGID) { 79 inode->i_gid = parent->i_gid; 80 if (S_ISDIR(mode)) 81 mode |= S_ISGID; 82 } else 83 inode->i_gid = current->fsgid; 84 85 /* 86 * New inodes need to save sane values on disk when 87 * uid & gid mount options are used 88 */ 89 jfs_inode->saved_uid = inode->i_uid; 90 jfs_inode->saved_gid = inode->i_gid; 91 92 /* 93 * Allocate inode to quota. 94 */ 95 if (DQUOT_ALLOC_INODE(inode)) { 96 DQUOT_DROP(inode); 97 inode->i_flags |= S_NOQUOTA; 98 inode->i_nlink = 0; 99 iput(inode); 100 return NULL; 101 } 102 103 inode->i_mode = mode; 104 /* inherit flags from parent */ 105 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT; 106 107 if (S_ISDIR(mode)) { 108 jfs_inode->mode2 |= IDIRECTORY; 109 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL; 110 } 111 else { 112 jfs_inode->mode2 |= INLINEEA | ISPARSE; 113 if (S_ISLNK(mode)) 114 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL); 115 } 116 jfs_inode->mode2 |= mode; 117 118 inode->i_blksize = sb->s_blocksize; 119 inode->i_blocks = 0; 120 inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME; 121 jfs_inode->otime = inode->i_ctime.tv_sec; 122 inode->i_generation = JFS_SBI(sb)->gengen++; 123 124 jfs_inode->cflag = 0; 125 126 /* Zero remaining fields */ 127 memset(&jfs_inode->acl, 0, sizeof(dxd_t)); 128 memset(&jfs_inode->ea, 0, sizeof(dxd_t)); 129 jfs_inode->next_index = 0; 130 jfs_inode->acltype = 0; 131 jfs_inode->btorder = 0; 132 jfs_inode->btindex = 0; 133 jfs_inode->bxflag = 0; 134 jfs_inode->blid = 0; 135 jfs_inode->atlhead = 0; 136 jfs_inode->atltail = 0; 137 jfs_inode->xtlid = 0; 138 jfs_set_inode_flags(inode); 139 140 jfs_info("ialloc returns inode = 0x%p\n", inode); 141 142 return inode; 143 } 144