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 | ||
24 | #include <linux/mm.h> | |
25 | #include <linux/sched.h> | |
26 | #include <linux/file.h> | |
27 | #include <linux/smp_lock.h> | |
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 | ||
38 | filename = getname((char *) regs->gr[26]); | |
39 | error = PTR_ERR(filename); | |
40 | if (IS_ERR(filename)) | |
41 | goto out; | |
42 | ||
43 | error = do_execve(filename, (char **) regs->gr[25], | |
44 | (char **)regs->gr[24], regs); | |
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 { | |
66 | struct hpux_dirent *current_dir; | |
67 | struct hpux_dirent *previous; | |
68 | int count; | |
69 | int error; | |
70 | }; | |
71 | ||
72 | #define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de))) | |
73 | #define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1)) | |
74 | ||
75 | static int filldir(void * __buf, const char * name, int namlen, loff_t offset, | |
76 | ino_t ino, unsigned d_type) | |
77 | { | |
78 | struct hpux_dirent * dirent; | |
79 | struct getdents_callback * buf = (struct getdents_callback *) __buf; | |
afefdbb2 | 80 | ino_t d_ino; |
1da177e4 LT |
81 | int reclen = ROUND_UP(NAME_OFFSET(dirent) + namlen + 1); |
82 | ||
83 | buf->error = -EINVAL; /* only used if we fail.. */ | |
84 | if (reclen > buf->count) | |
85 | return -EINVAL; | |
afefdbb2 DH |
86 | d_ino = ino; |
87 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) | |
88 | return -EOVERFLOW; | |
1da177e4 LT |
89 | dirent = buf->previous; |
90 | if (dirent) | |
91 | put_user(offset, &dirent->d_off); | |
92 | dirent = buf->current_dir; | |
93 | buf->previous = dirent; | |
afefdbb2 | 94 | put_user(d_ino, &dirent->d_ino); |
1da177e4 LT |
95 | put_user(reclen, &dirent->d_reclen); |
96 | put_user(namlen, &dirent->d_namlen); | |
97 | copy_to_user(dirent->d_name, name, namlen); | |
98 | put_user(0, dirent->d_name + namlen); | |
99 | ((char *) dirent) += reclen; | |
100 | buf->current_dir = dirent; | |
101 | buf->count -= reclen; | |
102 | return 0; | |
103 | } | |
104 | ||
105 | #undef NAME_OFFSET | |
106 | #undef ROUND_UP | |
107 | ||
108 | int hpux_getdents(unsigned int fd, struct hpux_dirent *dirent, unsigned int count) | |
109 | { | |
110 | struct file * file; | |
111 | struct hpux_dirent * lastdirent; | |
112 | struct getdents_callback buf; | |
113 | int error = -EBADF; | |
114 | ||
115 | file = fget(fd); | |
116 | if (!file) | |
117 | goto out; | |
118 | ||
119 | buf.current_dir = dirent; | |
120 | buf.previous = NULL; | |
121 | buf.count = count; | |
122 | buf.error = 0; | |
123 | ||
124 | error = vfs_readdir(file, filldir, &buf); | |
125 | if (error < 0) | |
126 | goto out_putf; | |
127 | error = buf.error; | |
128 | lastdirent = buf.previous; | |
129 | if (lastdirent) { | |
130 | put_user(file->f_pos, &lastdirent->d_off); | |
131 | error = count - buf.count; | |
132 | } | |
133 | ||
134 | out_putf: | |
135 | fput(file); | |
136 | out: | |
137 | return error; | |
138 | } | |
139 | ||
140 | int hpux_mount(const char *fs, const char *path, int mflag, | |
141 | const char *fstype, const char *dataptr, int datalen) | |
142 | { | |
143 | return -ENOSYS; | |
144 | } | |
145 | ||
146 | static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 *statbuf) | |
147 | { | |
148 | struct hpux_stat64 tmp; | |
149 | ||
150 | /* we probably want a different split here - is hpux 12:20? */ | |
151 | ||
152 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
153 | return -EOVERFLOW; | |
154 | ||
155 | memset(&tmp, 0, sizeof(tmp)); | |
156 | tmp.st_dev = new_encode_dev(stat->dev); | |
157 | tmp.st_ino = stat->ino; | |
158 | tmp.st_mode = stat->mode; | |
159 | tmp.st_nlink = stat->nlink; | |
160 | tmp.st_uid = stat->uid; | |
161 | tmp.st_gid = stat->gid; | |
162 | tmp.st_rdev = new_encode_dev(stat->rdev); | |
163 | tmp.st_size = stat->size; | |
164 | tmp.st_atime = stat->atime.tv_sec; | |
165 | tmp.st_mtime = stat->mtime.tv_sec; | |
166 | tmp.st_ctime = stat->ctime.tv_sec; | |
167 | tmp.st_blocks = stat->blocks; | |
168 | tmp.st_blksize = stat->blksize; | |
169 | return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; | |
170 | } | |
171 | ||
172 | long hpux_stat64(char *filename, struct hpux_stat64 *statbuf) | |
173 | { | |
174 | struct kstat stat; | |
175 | int error = vfs_stat(filename, &stat); | |
176 | ||
177 | if (!error) | |
178 | error = cp_hpux_stat(&stat, statbuf); | |
179 | ||
180 | return error; | |
181 | } | |
182 | ||
183 | long hpux_fstat64(unsigned int fd, struct hpux_stat64 *statbuf) | |
184 | { | |
185 | struct kstat stat; | |
186 | int error = vfs_fstat(fd, &stat); | |
187 | ||
188 | if (!error) | |
189 | error = cp_hpux_stat(&stat, statbuf); | |
190 | ||
191 | return error; | |
192 | } | |
193 | ||
194 | long hpux_lstat64(char *filename, struct hpux_stat64 *statbuf) | |
195 | { | |
196 | struct kstat stat; | |
197 | int error = vfs_lstat(filename, &stat); | |
198 | ||
199 | if (!error) | |
200 | error = cp_hpux_stat(&stat, statbuf); | |
201 | ||
202 | return error; | |
203 | } |