1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* Implements HPUX syscalls.
*
* Copyright (C) 1999 Matthew Wilcox <willy with parisc-linux.org>
* Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
* Copyright (C) 2000 John Marvin <jsm with parisc-linux.org>
* Copyright (C) 2000 Philipp Rumpf
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/file.h>
#include <linux/ptrace.h>
#include <linux/slab.h>
#include <asm/errno.h>
#include <asm/uaccess.h>
int hpux_execve(struct pt_regs *regs)
{
int error;
char *filename;
filename = getname((const char __user *) regs->gr[26]);
error = PTR_ERR(filename);
if (IS_ERR(filename))
goto out;
error = do_execve(filename,
(const char __user *const __user *) regs->gr[25],
(const char __user *const __user *) regs->gr[24],
regs);
putname(filename);
out:
return error;
}
struct hpux_dirent {
loff_t d_off;
ino_t d_ino;
short d_reclen;
short d_namlen;
char d_name[1];
};
struct getdents_callback {
struct hpux_dirent __user *current_dir;
struct hpux_dirent __user *previous;
int count;
int error;
};
#define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de)))
static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
u64 ino, unsigned d_type)
{
struct hpux_dirent __user * dirent;
struct getdents_callback * buf = (struct getdents_callback *) __buf;
ino_t d_ino;
int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(long));
buf->error = -EINVAL; /* only used if we fail.. */
if (reclen > buf->count)
return -EINVAL;
d_ino = ino;
if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) {
buf->error = -EOVERFLOW;
return -EOVERFLOW;
}
dirent = buf->previous;
if (dirent)
if (put_user(offset, &dirent->d_off))
goto Efault;
dirent = buf->current_dir;
if (put_user(d_ino, &dirent->d_ino) ||
put_user(reclen, &dirent->d_reclen) ||
put_user(namlen, &dirent->d_namlen) ||
copy_to_user(dirent->d_name, name, namlen) ||
put_user(0, dirent->d_name + namlen))
goto Efault;
buf->previous = dirent;
buf->current_dir = (void __user *)dirent + reclen;
buf->count -= reclen;
return 0;
Efault:
buf->error = -EFAULT;
return -EFAULT;
}
#undef NAME_OFFSET
int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count)
{
struct fd arg;
struct hpux_dirent __user * lastdirent;
struct getdents_callback buf;
int error;
arg = fdget(fd);
if (!arg.file)
return -EBADF;
buf.current_dir = dirent;
buf.previous = NULL;
buf.count = count;
buf.error = 0;
error = vfs_readdir(arg.file, filldir, &buf);
if (error >= 0)
error = buf.error;
lastdirent = buf.previous;
if (lastdirent) {
if (put_user(arg.file->f_pos, &lastdirent->d_off))
error = -EFAULT;
else
error = count - buf.count;
}
fdput(arg);
return error;
}
int hpux_mount(const char *fs, const char *path, int mflag,
const char *fstype, const char *dataptr, int datalen)
{
return -ENOSYS;
}
static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 __user *statbuf)
{
struct hpux_stat64 tmp;
/* we probably want a different split here - is hpux 12:20? */
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
memset(&tmp, 0, sizeof(tmp));
tmp.st_dev = new_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid);
tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid);
tmp.st_rdev = new_encode_dev(stat->rdev);
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
long hpux_stat64(const char __user *filename, struct hpux_stat64 __user *statbuf)
{
struct kstat stat;
int error = vfs_stat(filename, &stat);
if (!error)
error = cp_hpux_stat(&stat, statbuf);
return error;
}
long hpux_fstat64(unsigned int fd, struct hpux_stat64 __user *statbuf)
{
struct kstat stat;
int error = vfs_fstat(fd, &stat);
if (!error)
error = cp_hpux_stat(&stat, statbuf);
return error;
}
long hpux_lstat64(const char __user *filename,
struct hpux_stat64 __user *statbuf)
{
struct kstat stat;
int error = vfs_lstat(filename, &stat);
if (!error)
error = cp_hpux_stat(&stat, statbuf);
return error;
}
|
