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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 | 25 | #include <linux/mm.h> |
4e950f6f | 26 | #include <linux/fs.h> |
1da177e4 LT |
27 | #include <linux/sched.h> |
28 | #include <linux/file.h> | |
1da177e4 | 29 | #include <linux/ptrace.h> |
5a0e3ad6 | 30 | #include <linux/slab.h> |
1da177e4 LT |
31 | #include <asm/errno.h> |
32 | #include <asm/uaccess.h> | |
33 | ||
34 | int hpux_execve(struct pt_regs *regs) | |
35 | { | |
36 | int error; | |
91a27b2a | 37 | struct filename *filename; |
1da177e4 | 38 | |
c7887325 | 39 | filename = getname((const char __user *) regs->gr[26]); |
1da177e4 LT |
40 | error = PTR_ERR(filename); |
41 | if (IS_ERR(filename)) | |
42 | goto out; | |
43 | ||
91a27b2a | 44 | error = do_execve(filename->name, |
d7627467 | 45 | (const char __user *const __user *) regs->gr[25], |
6c700d71 | 46 | (const char __user *const __user *) regs->gr[24]); |
1da177e4 | 47 | |
1da177e4 LT |
48 | putname(filename); |
49 | ||
50 | out: | |
51 | return error; | |
52 | } | |
53 | ||
54 | struct hpux_dirent { | |
55 | loff_t d_off; | |
56 | ino_t d_ino; | |
57 | short d_reclen; | |
58 | short d_namlen; | |
59 | char d_name[1]; | |
60 | }; | |
61 | ||
62 | struct getdents_callback { | |
5c0ba4e0 | 63 | struct dir_context ctx; |
e51ec241 MW |
64 | struct hpux_dirent __user *current_dir; |
65 | struct hpux_dirent __user *previous; | |
1da177e4 LT |
66 | int count; |
67 | int error; | |
68 | }; | |
69 | ||
e51ec241 | 70 | #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) |
1da177e4 LT |
71 | |
72 | static int filldir(void * __buf, const char * name, int namlen, loff_t offset, | |
15c130c1 | 73 | u64 ino, unsigned d_type) |
1da177e4 | 74 | { |
e51ec241 | 75 | struct hpux_dirent __user * dirent; |
1da177e4 | 76 | struct getdents_callback * buf = (struct getdents_callback *) __buf; |
afefdbb2 | 77 | ino_t d_ino; |
ea743429 | 78 | int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(long)); |
1da177e4 LT |
79 | |
80 | buf->error = -EINVAL; /* only used if we fail.. */ | |
81 | if (reclen > buf->count) | |
82 | return -EINVAL; | |
afefdbb2 | 83 | d_ino = ino; |
da574983 AV |
84 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { |
85 | buf->error = -EOVERFLOW; | |
afefdbb2 | 86 | return -EOVERFLOW; |
da574983 | 87 | } |
1da177e4 LT |
88 | dirent = buf->previous; |
89 | if (dirent) | |
da574983 AV |
90 | if (put_user(offset, &dirent->d_off)) |
91 | goto Efault; | |
1da177e4 | 92 | dirent = buf->current_dir; |
da574983 AV |
93 | if (put_user(d_ino, &dirent->d_ino) || |
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)) | |
98 | goto Efault; | |
1da177e4 | 99 | buf->previous = dirent; |
da574983 | 100 | buf->current_dir = (void __user *)dirent + reclen; |
1da177e4 LT |
101 | buf->count -= reclen; |
102 | return 0; | |
da574983 | 103 | Efault: |
2ecbf813 | 104 | buf->error = -EFAULT; |
da574983 | 105 | return -EFAULT; |
1da177e4 LT |
106 | } |
107 | ||
108 | #undef NAME_OFFSET | |
1da177e4 | 109 | |
e51ec241 | 110 | int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count) |
1da177e4 | 111 | { |
2903ff01 | 112 | struct fd arg; |
e51ec241 | 113 | struct hpux_dirent __user * lastdirent; |
1da177e4 | 114 | struct getdents_callback buf; |
2903ff01 | 115 | int error; |
1da177e4 | 116 | |
2903ff01 AV |
117 | arg = fdget(fd); |
118 | if (!arg.file) | |
119 | return -EBADF; | |
1da177e4 LT |
120 | |
121 | buf.current_dir = dirent; | |
122 | buf.previous = NULL; | |
123 | buf.count = count; | |
124 | buf.error = 0; | |
5c0ba4e0 | 125 | buf.ctx.actor = filldir; |
1da177e4 | 126 | |
5c0ba4e0 | 127 | error = iterate_dir(arg.file, &buf.ctx); |
53c9c5c0 AV |
128 | if (error >= 0) |
129 | error = buf.error; | |
1da177e4 LT |
130 | lastdirent = buf.previous; |
131 | if (lastdirent) { | |
bb6f619b | 132 | if (put_user(buf.ctx.pos, &lastdirent->d_off)) |
da574983 AV |
133 | error = -EFAULT; |
134 | else | |
135 | error = count - buf.count; | |
1da177e4 LT |
136 | } |
137 | ||
2903ff01 | 138 | fdput(arg); |
1da177e4 LT |
139 | return error; |
140 | } | |
141 | ||
142 | int hpux_mount(const char *fs, const char *path, int mflag, | |
143 | const char *fstype, const char *dataptr, int datalen) | |
144 | { | |
145 | return -ENOSYS; | |
146 | } | |
147 | ||
e51ec241 | 148 | static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
149 | { |
150 | struct hpux_stat64 tmp; | |
151 | ||
152 | /* we probably want a different split here - is hpux 12:20? */ | |
153 | ||
154 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
155 | return -EOVERFLOW; | |
156 | ||
157 | memset(&tmp, 0, sizeof(tmp)); | |
158 | tmp.st_dev = new_encode_dev(stat->dev); | |
159 | tmp.st_ino = stat->ino; | |
160 | tmp.st_mode = stat->mode; | |
161 | tmp.st_nlink = stat->nlink; | |
a7c1938e EB |
162 | tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid); |
163 | tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid); | |
1da177e4 LT |
164 | tmp.st_rdev = new_encode_dev(stat->rdev); |
165 | tmp.st_size = stat->size; | |
166 | tmp.st_atime = stat->atime.tv_sec; | |
167 | tmp.st_mtime = stat->mtime.tv_sec; | |
168 | tmp.st_ctime = stat->ctime.tv_sec; | |
169 | tmp.st_blocks = stat->blocks; | |
170 | tmp.st_blksize = stat->blksize; | |
171 | return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; | |
172 | } | |
173 | ||
c7887325 | 174 | long hpux_stat64(const char __user *filename, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
175 | { |
176 | struct kstat stat; | |
177 | int error = vfs_stat(filename, &stat); | |
178 | ||
179 | if (!error) | |
180 | error = cp_hpux_stat(&stat, statbuf); | |
181 | ||
182 | return error; | |
183 | } | |
184 | ||
e51ec241 | 185 | long hpux_fstat64(unsigned int fd, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
186 | { |
187 | struct kstat stat; | |
188 | int error = vfs_fstat(fd, &stat); | |
189 | ||
190 | if (!error) | |
191 | error = cp_hpux_stat(&stat, statbuf); | |
192 | ||
193 | return error; | |
194 | } | |
195 | ||
c7887325 DH |
196 | long hpux_lstat64(const char __user *filename, |
197 | struct hpux_stat64 __user *statbuf) | |
1da177e4 LT |
198 | { |
199 | struct kstat stat; | |
200 | int error = vfs_lstat(filename, &stat); | |
201 | ||
202 | if (!error) | |
203 | error = cp_hpux_stat(&stat, statbuf); | |
204 | ||
205 | return error; | |
206 | } |