| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (C) International Business Machines Corp., 2000-2004 |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 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(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 | } |