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1/*
2 * linux/fs/hpfs/inode.c
3 *
4 * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
5 *
6 * inode VFS functions
7 */
8
9#include <linux/slab.h>
10#include <linux/user_namespace.h>
11#include "hpfs_fn.h"
12
13void hpfs_init_inode(struct inode *i)
14{
15 struct super_block *sb = i->i_sb;
16 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
17
18 i->i_uid = hpfs_sb(sb)->sb_uid;
19 i->i_gid = hpfs_sb(sb)->sb_gid;
20 i->i_mode = hpfs_sb(sb)->sb_mode;
21 i->i_size = -1;
22 i->i_blocks = -1;
23
24 hpfs_inode->i_dno = 0;
25 hpfs_inode->i_n_secs = 0;
26 hpfs_inode->i_file_sec = 0;
27 hpfs_inode->i_disk_sec = 0;
28 hpfs_inode->i_dpos = 0;
29 hpfs_inode->i_dsubdno = 0;
30 hpfs_inode->i_ea_mode = 0;
31 hpfs_inode->i_ea_uid = 0;
32 hpfs_inode->i_ea_gid = 0;
33 hpfs_inode->i_ea_size = 0;
34
35 hpfs_inode->i_rddir_off = NULL;
36 hpfs_inode->i_dirty = 0;
37
38 i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
39 i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
40 i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
41}
42
43void hpfs_read_inode(struct inode *i)
44{
45 struct buffer_head *bh;
46 struct fnode *fnode;
47 struct super_block *sb = i->i_sb;
48 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
49 void *ea;
50 int ea_size;
51
52 if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
53 /*i->i_mode |= S_IFREG;
54 i->i_mode &= ~0111;
55 i->i_op = &hpfs_file_iops;
56 i->i_fop = &hpfs_file_ops;
57 clear_nlink(i);*/
58 make_bad_inode(i);
59 return;
60 }
61 if (hpfs_sb(i->i_sb)->sb_eas) {
62 if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
63 if (ea_size == 2) {
64 i_uid_write(i, le16_to_cpu(*(__le16*)ea));
65 hpfs_inode->i_ea_uid = 1;
66 }
67 kfree(ea);
68 }
69 if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
70 if (ea_size == 2) {
71 i_gid_write(i, le16_to_cpu(*(__le16*)ea));
72 hpfs_inode->i_ea_gid = 1;
73 }
74 kfree(ea);
75 }
76 if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
77 kfree(ea);
78 i->i_mode = S_IFLNK | 0777;
79 i->i_op = &page_symlink_inode_operations;
80 inode_nohighmem(i);
81 i->i_data.a_ops = &hpfs_symlink_aops;
82 set_nlink(i, 1);
83 i->i_size = ea_size;
84 i->i_blocks = 1;
85 brelse(bh);
86 return;
87 }
88 if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
89 int rdev = 0;
90 umode_t mode = hpfs_sb(sb)->sb_mode;
91 if (ea_size == 2) {
92 mode = le16_to_cpu(*(__le16*)ea);
93 hpfs_inode->i_ea_mode = 1;
94 }
95 kfree(ea);
96 i->i_mode = mode;
97 if (S_ISBLK(mode) || S_ISCHR(mode)) {
98 if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
99 if (ea_size == 4)
100 rdev = le32_to_cpu(*(__le32*)ea);
101 kfree(ea);
102 }
103 }
104 if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
105 brelse(bh);
106 set_nlink(i, 1);
107 i->i_size = 0;
108 i->i_blocks = 1;
109 init_special_inode(i, mode,
110 new_decode_dev(rdev));
111 return;
112 }
113 }
114 }
115 if (fnode_is_dir(fnode)) {
116 int n_dnodes, n_subdirs;
117 i->i_mode |= S_IFDIR;
118 i->i_op = &hpfs_dir_iops;
119 i->i_fop = &hpfs_dir_ops;
120 hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up);
121 hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno);
122 if (hpfs_sb(sb)->sb_chk >= 2) {
123 struct buffer_head *bh0;
124 if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
125 }
126 n_dnodes = 0; n_subdirs = 0;
127 hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
128 i->i_blocks = 4 * n_dnodes;
129 i->i_size = 2048 * n_dnodes;
130 set_nlink(i, 2 + n_subdirs);
131 } else {
132 i->i_mode |= S_IFREG;
133 if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
134 i->i_op = &hpfs_file_iops;
135 i->i_fop = &hpfs_file_ops;
136 set_nlink(i, 1);
137 i->i_size = le32_to_cpu(fnode->file_size);
138 i->i_blocks = ((i->i_size + 511) >> 9) + 1;
139 i->i_data.a_ops = &hpfs_aops;
140 hpfs_i(i)->mmu_private = i->i_size;
141 }
142 brelse(bh);
143}
144
145static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
146{
147 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
148 /*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
149 Some unknown structures like ACL may be in fnode,
150 we'd better not overwrite them
151 hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
152 } else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
153 __le32 ea;
154 if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
155 ea = cpu_to_le32(i_uid_read(i));
156 hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
157 hpfs_inode->i_ea_uid = 1;
158 }
159 if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
160 ea = cpu_to_le32(i_gid_read(i));
161 hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
162 hpfs_inode->i_ea_gid = 1;
163 }
164 if (!S_ISLNK(i->i_mode))
165 if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
166 | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
167 && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
168 | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
169 ea = cpu_to_le32(i->i_mode);
170 /* sick, but legal */
171 hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
172 hpfs_inode->i_ea_mode = 1;
173 }
174 if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
175 ea = cpu_to_le32(new_encode_dev(i->i_rdev));
176 hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
177 }
178 }
179}
180
181void hpfs_write_inode(struct inode *i)
182{
183 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
184 struct inode *parent;
185 if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
186 if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
187 if (*hpfs_inode->i_rddir_off)
188 pr_err("write_inode: some position still there\n");
189 kfree(hpfs_inode->i_rddir_off);
190 hpfs_inode->i_rddir_off = NULL;
191 }
192 if (!i->i_nlink) {
193 return;
194 }
195 parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
196 if (parent) {
197 hpfs_inode->i_dirty = 0;
198 if (parent->i_state & I_NEW) {
199 hpfs_init_inode(parent);
200 hpfs_read_inode(parent);
201 unlock_new_inode(parent);
202 }
203 hpfs_write_inode_nolock(i);
204 iput(parent);
205 }
206}
207
208void hpfs_write_inode_nolock(struct inode *i)
209{
210 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
211 struct buffer_head *bh;
212 struct fnode *fnode;
213 struct quad_buffer_head qbh;
214 struct hpfs_dirent *de;
215 if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
216 if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
217 if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
218 if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
219 brelse(bh);
220 return;
221 }
222 } else de = NULL;
223 if (S_ISREG(i->i_mode)) {
224 fnode->file_size = cpu_to_le32(i->i_size);
225 if (de) de->file_size = cpu_to_le32(i->i_size);
226 } else if (S_ISDIR(i->i_mode)) {
227 fnode->file_size = cpu_to_le32(0);
228 if (de) de->file_size = cpu_to_le32(0);
229 }
230 hpfs_write_inode_ea(i, fnode);
231 if (de) {
232 de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
233 de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
234 de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
235 de->read_only = !(i->i_mode & 0222);
236 de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
237 hpfs_mark_4buffers_dirty(&qbh);
238 hpfs_brelse4(&qbh);
239 }
240 if (S_ISDIR(i->i_mode)) {
241 if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
242 de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
243 de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
244 de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
245 de->read_only = !(i->i_mode & 0222);
246 de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0);
247 de->file_size = cpu_to_le32(0);
248 hpfs_mark_4buffers_dirty(&qbh);
249 hpfs_brelse4(&qbh);
250 } else
251 hpfs_error(i->i_sb,
252 "directory %08lx doesn't have '.' entry",
253 (unsigned long)i->i_ino);
254 }
255 mark_buffer_dirty(bh);
256 brelse(bh);
257}
258
259int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
260{
261 struct inode *inode = d_inode(dentry);
262 int error = -EINVAL;
263
264 hpfs_lock(inode->i_sb);
265 if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
266 goto out_unlock;
267 if ((attr->ia_valid & ATTR_UID) &&
268 from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)
269 goto out_unlock;
270 if ((attr->ia_valid & ATTR_GID) &&
271 from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)
272 goto out_unlock;
273 if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
274 goto out_unlock;
275
276 error = inode_change_ok(inode, attr);
277 if (error)
278 goto out_unlock;
279
280 if ((attr->ia_valid & ATTR_SIZE) &&
281 attr->ia_size != i_size_read(inode)) {
282 error = inode_newsize_ok(inode, attr->ia_size);
283 if (error)
284 goto out_unlock;
285
286 truncate_setsize(inode, attr->ia_size);
287 hpfs_truncate(inode);
288 }
289
290 setattr_copy(inode, attr);
291
292 hpfs_write_inode(inode);
293
294 out_unlock:
295 hpfs_unlock(inode->i_sb);
296 return error;
297}
298
299void hpfs_write_if_changed(struct inode *inode)
300{
301 struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
302
303 if (hpfs_inode->i_dirty)
304 hpfs_write_inode(inode);
305}
306
307void hpfs_evict_inode(struct inode *inode)
308{
309 truncate_inode_pages_final(&inode->i_data);
310 clear_inode(inode);
311 if (!inode->i_nlink) {
312 hpfs_lock(inode->i_sb);
313 hpfs_remove_fnode(inode->i_sb, inode->i_ino);
314 hpfs_unlock(inode->i_sb);
315 }
316}
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * linux/fs/hpfs/inode.c
4 *
5 * Mikulas Patocka (mikulas@artax.karlin.mff.cuni.cz), 1998-1999
6 *
7 * inode VFS functions
8 */
9
10#include <linux/slab.h>
11#include <linux/user_namespace.h>
12#include "hpfs_fn.h"
13
14void hpfs_init_inode(struct inode *i)
15{
16 struct super_block *sb = i->i_sb;
17 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
18
19 i->i_uid = hpfs_sb(sb)->sb_uid;
20 i->i_gid = hpfs_sb(sb)->sb_gid;
21 i->i_mode = hpfs_sb(sb)->sb_mode;
22 i->i_size = -1;
23 i->i_blocks = -1;
24
25 hpfs_inode->i_dno = 0;
26 hpfs_inode->i_n_secs = 0;
27 hpfs_inode->i_file_sec = 0;
28 hpfs_inode->i_disk_sec = 0;
29 hpfs_inode->i_dpos = 0;
30 hpfs_inode->i_dsubdno = 0;
31 hpfs_inode->i_ea_mode = 0;
32 hpfs_inode->i_ea_uid = 0;
33 hpfs_inode->i_ea_gid = 0;
34 hpfs_inode->i_ea_size = 0;
35
36 hpfs_inode->i_rddir_off = NULL;
37 hpfs_inode->i_dirty = 0;
38
39 i->i_ctime.tv_sec = i->i_ctime.tv_nsec = 0;
40 i->i_mtime.tv_sec = i->i_mtime.tv_nsec = 0;
41 i->i_atime.tv_sec = i->i_atime.tv_nsec = 0;
42}
43
44void hpfs_read_inode(struct inode *i)
45{
46 struct buffer_head *bh;
47 struct fnode *fnode;
48 struct super_block *sb = i->i_sb;
49 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
50 void *ea;
51 int ea_size;
52
53 if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
54 /*i->i_mode |= S_IFREG;
55 i->i_mode &= ~0111;
56 i->i_op = &hpfs_file_iops;
57 i->i_fop = &hpfs_file_ops;
58 clear_nlink(i);*/
59 make_bad_inode(i);
60 return;
61 }
62 if (hpfs_sb(i->i_sb)->sb_eas) {
63 if ((ea = hpfs_get_ea(i->i_sb, fnode, "UID", &ea_size))) {
64 if (ea_size == 2) {
65 i_uid_write(i, le16_to_cpu(*(__le16*)ea));
66 hpfs_inode->i_ea_uid = 1;
67 }
68 kfree(ea);
69 }
70 if ((ea = hpfs_get_ea(i->i_sb, fnode, "GID", &ea_size))) {
71 if (ea_size == 2) {
72 i_gid_write(i, le16_to_cpu(*(__le16*)ea));
73 hpfs_inode->i_ea_gid = 1;
74 }
75 kfree(ea);
76 }
77 if ((ea = hpfs_get_ea(i->i_sb, fnode, "SYMLINK", &ea_size))) {
78 kfree(ea);
79 i->i_mode = S_IFLNK | 0777;
80 i->i_op = &page_symlink_inode_operations;
81 inode_nohighmem(i);
82 i->i_data.a_ops = &hpfs_symlink_aops;
83 set_nlink(i, 1);
84 i->i_size = ea_size;
85 i->i_blocks = 1;
86 brelse(bh);
87 return;
88 }
89 if ((ea = hpfs_get_ea(i->i_sb, fnode, "MODE", &ea_size))) {
90 int rdev = 0;
91 umode_t mode = hpfs_sb(sb)->sb_mode;
92 if (ea_size == 2) {
93 mode = le16_to_cpu(*(__le16*)ea);
94 hpfs_inode->i_ea_mode = 1;
95 }
96 kfree(ea);
97 i->i_mode = mode;
98 if (S_ISBLK(mode) || S_ISCHR(mode)) {
99 if ((ea = hpfs_get_ea(i->i_sb, fnode, "DEV", &ea_size))) {
100 if (ea_size == 4)
101 rdev = le32_to_cpu(*(__le32*)ea);
102 kfree(ea);
103 }
104 }
105 if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) {
106 brelse(bh);
107 set_nlink(i, 1);
108 i->i_size = 0;
109 i->i_blocks = 1;
110 init_special_inode(i, mode,
111 new_decode_dev(rdev));
112 return;
113 }
114 }
115 }
116 if (fnode_is_dir(fnode)) {
117 int n_dnodes, n_subdirs;
118 i->i_mode |= S_IFDIR;
119 i->i_op = &hpfs_dir_iops;
120 i->i_fop = &hpfs_dir_ops;
121 hpfs_inode->i_parent_dir = le32_to_cpu(fnode->up);
122 hpfs_inode->i_dno = le32_to_cpu(fnode->u.external[0].disk_secno);
123 if (hpfs_sb(sb)->sb_chk >= 2) {
124 struct buffer_head *bh0;
125 if (hpfs_map_fnode(sb, hpfs_inode->i_parent_dir, &bh0)) brelse(bh0);
126 }
127 n_dnodes = 0; n_subdirs = 0;
128 hpfs_count_dnodes(i->i_sb, hpfs_inode->i_dno, &n_dnodes, &n_subdirs, NULL);
129 i->i_blocks = 4 * n_dnodes;
130 i->i_size = 2048 * n_dnodes;
131 set_nlink(i, 2 + n_subdirs);
132 } else {
133 i->i_mode |= S_IFREG;
134 if (!hpfs_inode->i_ea_mode) i->i_mode &= ~0111;
135 i->i_op = &hpfs_file_iops;
136 i->i_fop = &hpfs_file_ops;
137 set_nlink(i, 1);
138 i->i_size = le32_to_cpu(fnode->file_size);
139 i->i_blocks = ((i->i_size + 511) >> 9) + 1;
140 i->i_data.a_ops = &hpfs_aops;
141 hpfs_i(i)->mmu_private = i->i_size;
142 }
143 brelse(bh);
144}
145
146static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
147{
148 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
149 /*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
150 Some unknown structures like ACL may be in fnode,
151 we'd better not overwrite them
152 hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
153 } else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
154 __le32 ea;
155 if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
156 ea = cpu_to_le32(i_uid_read(i));
157 hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
158 hpfs_inode->i_ea_uid = 1;
159 }
160 if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
161 ea = cpu_to_le32(i_gid_read(i));
162 hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
163 hpfs_inode->i_ea_gid = 1;
164 }
165 if (!S_ISLNK(i->i_mode))
166 if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
167 | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
168 && i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
169 | (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
170 ea = cpu_to_le32(i->i_mode);
171 /* sick, but legal */
172 hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
173 hpfs_inode->i_ea_mode = 1;
174 }
175 if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
176 ea = cpu_to_le32(new_encode_dev(i->i_rdev));
177 hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
178 }
179 }
180}
181
182void hpfs_write_inode(struct inode *i)
183{
184 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
185 struct inode *parent;
186 if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
187 if (hpfs_inode->i_rddir_off && !atomic_read(&i->i_count)) {
188 if (*hpfs_inode->i_rddir_off)
189 pr_err("write_inode: some position still there\n");
190 kfree(hpfs_inode->i_rddir_off);
191 hpfs_inode->i_rddir_off = NULL;
192 }
193 if (!i->i_nlink) {
194 return;
195 }
196 parent = iget_locked(i->i_sb, hpfs_inode->i_parent_dir);
197 if (parent) {
198 hpfs_inode->i_dirty = 0;
199 if (parent->i_state & I_NEW) {
200 hpfs_init_inode(parent);
201 hpfs_read_inode(parent);
202 unlock_new_inode(parent);
203 }
204 hpfs_write_inode_nolock(i);
205 iput(parent);
206 }
207}
208
209void hpfs_write_inode_nolock(struct inode *i)
210{
211 struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
212 struct buffer_head *bh;
213 struct fnode *fnode;
214 struct quad_buffer_head qbh;
215 struct hpfs_dirent *de;
216 if (i->i_ino == hpfs_sb(i->i_sb)->sb_root) return;
217 if (!(fnode = hpfs_map_fnode(i->i_sb, i->i_ino, &bh))) return;
218 if (i->i_ino != hpfs_sb(i->i_sb)->sb_root && i->i_nlink) {
219 if (!(de = map_fnode_dirent(i->i_sb, i->i_ino, fnode, &qbh))) {
220 brelse(bh);
221 return;
222 }
223 } else de = NULL;
224 if (S_ISREG(i->i_mode)) {
225 fnode->file_size = cpu_to_le32(i->i_size);
226 if (de) de->file_size = cpu_to_le32(i->i_size);
227 } else if (S_ISDIR(i->i_mode)) {
228 fnode->file_size = cpu_to_le32(0);
229 if (de) de->file_size = cpu_to_le32(0);
230 }
231 hpfs_write_inode_ea(i, fnode);
232 if (de) {
233 de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
234 de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
235 de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
236 de->read_only = !(i->i_mode & 0222);
237 de->ea_size = cpu_to_le32(hpfs_inode->i_ea_size);
238 hpfs_mark_4buffers_dirty(&qbh);
239 hpfs_brelse4(&qbh);
240 }
241 if (S_ISDIR(i->i_mode)) {
242 if ((de = map_dirent(i, hpfs_inode->i_dno, "\001\001", 2, NULL, &qbh))) {
243 de->write_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_mtime.tv_sec));
244 de->read_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_atime.tv_sec));
245 de->creation_date = cpu_to_le32(gmt_to_local(i->i_sb, i->i_ctime.tv_sec));
246 de->read_only = !(i->i_mode & 0222);
247 de->ea_size = cpu_to_le32(/*hpfs_inode->i_ea_size*/0);
248 de->file_size = cpu_to_le32(0);
249 hpfs_mark_4buffers_dirty(&qbh);
250 hpfs_brelse4(&qbh);
251 } else
252 hpfs_error(i->i_sb,
253 "directory %08lx doesn't have '.' entry",
254 (unsigned long)i->i_ino);
255 }
256 mark_buffer_dirty(bh);
257 brelse(bh);
258}
259
260int hpfs_setattr(struct dentry *dentry, struct iattr *attr)
261{
262 struct inode *inode = d_inode(dentry);
263 int error = -EINVAL;
264
265 hpfs_lock(inode->i_sb);
266 if (inode->i_ino == hpfs_sb(inode->i_sb)->sb_root)
267 goto out_unlock;
268 if ((attr->ia_valid & ATTR_UID) &&
269 from_kuid(&init_user_ns, attr->ia_uid) >= 0x10000)
270 goto out_unlock;
271 if ((attr->ia_valid & ATTR_GID) &&
272 from_kgid(&init_user_ns, attr->ia_gid) >= 0x10000)
273 goto out_unlock;
274 if ((attr->ia_valid & ATTR_SIZE) && attr->ia_size > inode->i_size)
275 goto out_unlock;
276
277 error = setattr_prepare(dentry, attr);
278 if (error)
279 goto out_unlock;
280
281 if ((attr->ia_valid & ATTR_SIZE) &&
282 attr->ia_size != i_size_read(inode)) {
283 error = inode_newsize_ok(inode, attr->ia_size);
284 if (error)
285 goto out_unlock;
286
287 truncate_setsize(inode, attr->ia_size);
288 hpfs_truncate(inode);
289 }
290
291 setattr_copy(inode, attr);
292
293 hpfs_write_inode(inode);
294
295 out_unlock:
296 hpfs_unlock(inode->i_sb);
297 return error;
298}
299
300void hpfs_write_if_changed(struct inode *inode)
301{
302 struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
303
304 if (hpfs_inode->i_dirty)
305 hpfs_write_inode(inode);
306}
307
308void hpfs_evict_inode(struct inode *inode)
309{
310 truncate_inode_pages_final(&inode->i_data);
311 clear_inode(inode);
312 if (!inode->i_nlink) {
313 hpfs_lock(inode->i_sb);
314 hpfs_remove_fnode(inode->i_sb, inode->i_ino);
315 hpfs_unlock(inode->i_sb);
316 }
317}