1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) International Business Machines Corp., 2000-2004 4 */ 5 6 #include <linux/fs.h> 7 #include <linux/quotaops.h> 8 #include "jfs_incore.h" 9 #include "jfs_inode.h" 10 #include "jfs_filsys.h" 11 #include "jfs_imap.h" 12 #include "jfs_dinode.h" 13 #include "jfs_debug.h" 14 15 16 void jfs_set_inode_flags(struct inode *inode) 17 { 18 unsigned int flags = JFS_IP(inode)->mode2; 19 unsigned int new_fl = 0; 20 21 if (flags & JFS_IMMUTABLE_FL) 22 new_fl |= S_IMMUTABLE; 23 if (flags & JFS_APPEND_FL) 24 new_fl |= S_APPEND; 25 if (flags & JFS_NOATIME_FL) 26 new_fl |= S_NOATIME; 27 if (flags & JFS_DIRSYNC_FL) 28 new_fl |= S_DIRSYNC; 29 if (flags & JFS_SYNC_FL) 30 new_fl |= S_SYNC; 31 inode_set_flags(inode, new_fl, S_IMMUTABLE | S_APPEND | S_NOATIME | 32 S_DIRSYNC | S_SYNC); 33 } 34 35 /* 36 * NAME: ialloc() 37 * 38 * FUNCTION: Allocate a new inode 39 * 40 */ 41 struct inode *ialloc(struct inode *parent, umode_t mode) 42 { 43 struct super_block *sb = parent->i_sb; 44 struct inode *inode; 45 struct jfs_inode_info *jfs_inode; 46 int rc; 47 48 inode = new_inode(sb); 49 if (!inode) { 50 jfs_warn("ialloc: new_inode returned NULL!"); 51 return ERR_PTR(-ENOMEM); 52 } 53 54 jfs_inode = JFS_IP(inode); 55 56 rc = diAlloc(parent, S_ISDIR(mode), inode); 57 if (rc) { 58 jfs_warn("ialloc: diAlloc returned %d!", rc); 59 goto fail_put; 60 } 61 62 if (insert_inode_locked(inode) < 0) { 63 rc = -EINVAL; 64 goto fail_put; 65 } 66 67 inode_init_owner(&init_user_ns, inode, parent, mode); 68 /* 69 * New inodes need to save sane values on disk when 70 * uid & gid mount options are used 71 */ 72 jfs_inode->saved_uid = inode->i_uid; 73 jfs_inode->saved_gid = inode->i_gid; 74 75 /* 76 * Allocate inode to quota. 77 */ 78 rc = dquot_initialize(inode); 79 if (rc) 80 goto fail_drop; 81 rc = dquot_alloc_inode(inode); 82 if (rc) 83 goto fail_drop; 84 85 /* inherit flags from parent */ 86 jfs_inode->mode2 = JFS_IP(parent)->mode2 & JFS_FL_INHERIT; 87 88 if (S_ISDIR(mode)) { 89 jfs_inode->mode2 |= IDIRECTORY; 90 jfs_inode->mode2 &= ~JFS_DIRSYNC_FL; 91 } 92 else { 93 jfs_inode->mode2 |= INLINEEA | ISPARSE; 94 if (S_ISLNK(mode)) 95 jfs_inode->mode2 &= ~(JFS_IMMUTABLE_FL|JFS_APPEND_FL); 96 } 97 jfs_inode->mode2 |= inode->i_mode; 98 99 inode->i_blocks = 0; 100 inode->i_mtime = inode->i_atime = inode->i_ctime = current_time(inode); 101 jfs_inode->otime = inode->i_ctime.tv_sec; 102 inode->i_generation = JFS_SBI(sb)->gengen++; 103 104 jfs_inode->cflag = 0; 105 106 /* Zero remaining fields */ 107 memset(&jfs_inode->acl, 0, sizeof(dxd_t)); 108 memset(&jfs_inode->ea, 0, sizeof(dxd_t)); 109 jfs_inode->next_index = 0; 110 jfs_inode->acltype = 0; 111 jfs_inode->btorder = 0; 112 jfs_inode->btindex = 0; 113 jfs_inode->bxflag = 0; 114 jfs_inode->blid = 0; 115 jfs_inode->atlhead = 0; 116 jfs_inode->atltail = 0; 117 jfs_inode->xtlid = 0; 118 jfs_set_inode_flags(inode); 119 120 jfs_info("ialloc returns inode = 0x%p", inode); 121 122 return inode; 123 124 fail_drop: 125 dquot_drop(inode); 126 inode->i_flags |= S_NOQUOTA; 127 clear_nlink(inode); 128 discard_new_inode(inode); 129 return ERR_PTR(rc); 130 131 fail_put: 132 iput(inode); 133 return ERR_PTR(rc); 134 } 135