Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Implements HPUX syscalls. | |
3 | * | |
4 | * Copyright (C) 1999 Matthew Wilcox <willy with parisc-linux.org> | |
5 | * Copyright (C) 2000 Michael Ang <mang with subcarrier.org> | |
6 | * Copyright (C) 2000 John Marvin <jsm with parisc-linux.org> | |
7 | * Copyright (C) 2000 Philipp Rumpf | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | */ | |
23 | ||
ea743429 | 24 | #include <linux/kernel.h> |
1da177e4 LT |
25 | #include <linux/mm.h> |
26 | #include <linux/sched.h> | |
27 | #include <linux/file.h> | |
1da177e4 LT |
28 | #include <linux/slab.h> |
29 | #include <linux/ptrace.h> | |
30 | #include <asm/errno.h> | |
31 | #include <asm/uaccess.h> | |
32 | ||
33 | int hpux_execve(struct pt_regs *regs) | |
34 | { | |
35 | int error; | |
36 | char *filename; | |
37 | ||
e51ec241 | 38 | filename = getname((char __user *) regs->gr[26]); |
1da177e4 LT |
39 | error = PTR_ERR(filename); |
40 | if (IS_ERR(filename)) | |
41 | goto out; | |
42 | ||
e51ec241 MW |
43 | error = do_execve(filename, (char __user * __user *) regs->gr[25], |
44 | (char __user * __user *) regs->gr[24], regs); | |
1da177e4 LT |
45 | |
46 | if (error == 0) { | |
47 | task_lock(current); | |
48 | current->ptrace &= ~PT_DTRACE; | |
49 | task_unlock(current); | |
50 | } | |
51 | putname(filename); | |
52 | ||
53 | out: | |
54 | return error; | |
55 | } | |
56 | ||
57 | struct hpux_dirent { | |
58 | loff_t d_off; | |
59 | ino_t d_ino; | |
60 | short d_reclen; | |
61 | short d_namlen; | |
62 | char d_name[1]; | |
63 | }; | |
64 | ||
65 | struct getdents_callback { | |
e51ec241 MW |
66 | struct hpux_dirent __user *current_dir; |
67 | struct hpux_dirent __user *previous; | |
1da177e4 LT |
68 | int count; |
69 | int error; | |
70 | }; | |
71 | ||
e51ec241 | 72 | #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) |
1da177e4 LT |
73 | |
74 | static int filldir(void * __buf, const char * name, int namlen, loff_t offset, | |
15c130c1 | 75 | u64 ino, unsigned d_type) |
1da177e4 | 76 | { |
e51ec241 | 77 | struct hpux_dirent __user * dirent; |
1da177e4 | 78 | struct getdents_callback * buf = (struct getdents_callback *) __buf; |
afefdbb2 | 79 | ino_t d_ino; |
ea743429 | 80 | int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(long)); |
1da177e4 LT |
81 | |
82 | buf->error = -EINVAL; /* only used if we fail.. */ | |
83 | if (reclen > buf->count) | |
84 | return -EINVAL; | |
afefdbb2 DH |
85 | d_ino = ino; |
86 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) | |
87 | return -EOVERFLOW; | |
1da177e4 LT |
88 | dirent = buf->previous; |
89 | if (dirent) | |
90 | put_user(offset, &dirent->d_off); | |
91 | dirent = buf->current_dir; | |
92 | buf->previous = dirent; | |
afefdbb2 | 93 | put_user(d_ino, &dirent->d_ino); |
1da177e4 LT |
94 | put_user(reclen, &dirent->d_reclen); |
95 | put_user(namlen, &dirent->d_namlen); | |
96 | copy_to_user(dirent->d_name, name, namlen); | |
97 | put_user(0, dirent->d_name + namlen); | |
32f46813 | 98 | dirent = (void __user *)dirent + reclen; |
1da177e4 LT |
99 | buf->current_dir = dirent; |
100 | buf->count -= reclen; | |
101 | return 0; | |
102 | } | |
103 | ||
104 | #undef NAME_OFFSET | |
1da177e4 | 105 | |
e51ec241 | 106 | int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count) |
1da177e4 LT |
107 | { |
108 | struct file * file; | |
e51ec241 | 109 | struct hpux_dirent __user * lastdirent; |
1da177e4 LT |
110 | struct getdents_callback buf; |
111 | int error = -EBADF; | |
112 | ||
113 | file = fget(fd); | |
114 | if (!file) | |
115 | goto out; | |
116 | ||
117 | buf.current_dir = dirent; | |
118 | buf.previous = NULL; | |
119 | buf.count = count; | |
120 | buf.error = 0; | |
121 | ||
122 | error = vfs_readdir(file, filldir, &buf); | |
123 | if (error < 0) | |
124 | goto out_putf; | |
125 | error = buf.error; | |
126 | lastdirent = buf.previous; | |
127 | if (lastdirent) { | |
128 | put_user(file->f_pos, &lastdirent->d_off); | |
129 | error = count - buf.count; | |
130 | } | |
131 | ||
132 | out_putf: | |
133 | fput(file); | |
134 | out: | |
135 | return error; | |
136 | } | |
137 | ||
138 | int hpux_mount(const char *fs, const char *path, int mflag, | |
139 | const char *fstype, const char *dataptr, int datalen) | |
140 | { | |
141 | return -ENOSYS; | |
142 | } | |
143 | ||
e51ec241 | 144 | static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
145 | { |
146 | struct hpux_stat64 tmp; | |
147 | ||
148 | /* we probably want a different split here - is hpux 12:20? */ | |
149 | ||
150 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
151 | return -EOVERFLOW; | |
152 | ||
153 | memset(&tmp, 0, sizeof(tmp)); | |
154 | tmp.st_dev = new_encode_dev(stat->dev); | |
155 | tmp.st_ino = stat->ino; | |
156 | tmp.st_mode = stat->mode; | |
157 | tmp.st_nlink = stat->nlink; | |
158 | tmp.st_uid = stat->uid; | |
159 | tmp.st_gid = stat->gid; | |
160 | tmp.st_rdev = new_encode_dev(stat->rdev); | |
161 | tmp.st_size = stat->size; | |
162 | tmp.st_atime = stat->atime.tv_sec; | |
163 | tmp.st_mtime = stat->mtime.tv_sec; | |
164 | tmp.st_ctime = stat->ctime.tv_sec; | |
165 | tmp.st_blocks = stat->blocks; | |
166 | tmp.st_blksize = stat->blksize; | |
167 | return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; | |
168 | } | |
169 | ||
e51ec241 | 170 | long hpux_stat64(char __user *filename, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
171 | { |
172 | struct kstat stat; | |
173 | int error = vfs_stat(filename, &stat); | |
174 | ||
175 | if (!error) | |
176 | error = cp_hpux_stat(&stat, statbuf); | |
177 | ||
178 | return error; | |
179 | } | |
180 | ||
e51ec241 | 181 | long hpux_fstat64(unsigned int fd, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
182 | { |
183 | struct kstat stat; | |
184 | int error = vfs_fstat(fd, &stat); | |
185 | ||
186 | if (!error) | |
187 | error = cp_hpux_stat(&stat, statbuf); | |
188 | ||
189 | return error; | |
190 | } | |
191 | ||
e51ec241 | 192 | long hpux_lstat64(char __user *filename, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
193 | { |
194 | struct kstat stat; | |
195 | int error = vfs_lstat(filename, &stat); | |
196 | ||
197 | if (!error) | |
198 | error = cp_hpux_stat(&stat, statbuf); | |
199 | ||
200 | return error; | |
201 | } |