Commit | Line | Data |
---|---|---|
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 | { | |
c4ad8f98 | 36 | return do_execve(getname((const char __user *) regs->gr[26]), |
d7627467 | 37 | (const char __user *const __user *) regs->gr[25], |
6c700d71 | 38 | (const char __user *const __user *) regs->gr[24]); |
1da177e4 LT |
39 | } |
40 | ||
41 | struct hpux_dirent { | |
42 | loff_t d_off; | |
43 | ino_t d_ino; | |
44 | short d_reclen; | |
45 | short d_namlen; | |
46 | char d_name[1]; | |
47 | }; | |
48 | ||
49 | struct getdents_callback { | |
5c0ba4e0 | 50 | struct dir_context ctx; |
e51ec241 MW |
51 | struct hpux_dirent __user *current_dir; |
52 | struct hpux_dirent __user *previous; | |
1da177e4 LT |
53 | int count; |
54 | int error; | |
55 | }; | |
56 | ||
e51ec241 | 57 | #define NAME_OFFSET(de) ((int) ((de)->d_name - (char __user *) (de))) |
1da177e4 LT |
58 | |
59 | static int filldir(void * __buf, const char * name, int namlen, loff_t offset, | |
15c130c1 | 60 | u64 ino, unsigned d_type) |
1da177e4 | 61 | { |
e51ec241 | 62 | struct hpux_dirent __user * dirent; |
1da177e4 | 63 | struct getdents_callback * buf = (struct getdents_callback *) __buf; |
afefdbb2 | 64 | ino_t d_ino; |
ea743429 | 65 | int reclen = ALIGN(NAME_OFFSET(dirent) + namlen + 1, sizeof(long)); |
1da177e4 LT |
66 | |
67 | buf->error = -EINVAL; /* only used if we fail.. */ | |
68 | if (reclen > buf->count) | |
69 | return -EINVAL; | |
afefdbb2 | 70 | d_ino = ino; |
da574983 AV |
71 | if (sizeof(d_ino) < sizeof(ino) && d_ino != ino) { |
72 | buf->error = -EOVERFLOW; | |
afefdbb2 | 73 | return -EOVERFLOW; |
da574983 | 74 | } |
1da177e4 LT |
75 | dirent = buf->previous; |
76 | if (dirent) | |
da574983 AV |
77 | if (put_user(offset, &dirent->d_off)) |
78 | goto Efault; | |
1da177e4 | 79 | dirent = buf->current_dir; |
da574983 AV |
80 | if (put_user(d_ino, &dirent->d_ino) || |
81 | put_user(reclen, &dirent->d_reclen) || | |
82 | put_user(namlen, &dirent->d_namlen) || | |
83 | copy_to_user(dirent->d_name, name, namlen) || | |
84 | put_user(0, dirent->d_name + namlen)) | |
85 | goto Efault; | |
1da177e4 | 86 | buf->previous = dirent; |
da574983 | 87 | buf->current_dir = (void __user *)dirent + reclen; |
1da177e4 LT |
88 | buf->count -= reclen; |
89 | return 0; | |
da574983 | 90 | Efault: |
2ecbf813 | 91 | buf->error = -EFAULT; |
da574983 | 92 | return -EFAULT; |
1da177e4 LT |
93 | } |
94 | ||
95 | #undef NAME_OFFSET | |
1da177e4 | 96 | |
e51ec241 | 97 | int hpux_getdents(unsigned int fd, struct hpux_dirent __user *dirent, unsigned int count) |
1da177e4 | 98 | { |
2903ff01 | 99 | struct fd arg; |
e51ec241 | 100 | struct hpux_dirent __user * lastdirent; |
ac6614b7 AV |
101 | struct getdents_callback buf = { |
102 | .ctx.actor = filldir, | |
103 | .current_dir = dirent, | |
104 | .count = count | |
105 | }; | |
2903ff01 | 106 | int error; |
1da177e4 | 107 | |
2903ff01 AV |
108 | arg = fdget(fd); |
109 | if (!arg.file) | |
110 | return -EBADF; | |
1da177e4 | 111 | |
5c0ba4e0 | 112 | error = iterate_dir(arg.file, &buf.ctx); |
53c9c5c0 AV |
113 | if (error >= 0) |
114 | error = buf.error; | |
1da177e4 LT |
115 | lastdirent = buf.previous; |
116 | if (lastdirent) { | |
bb6f619b | 117 | if (put_user(buf.ctx.pos, &lastdirent->d_off)) |
da574983 AV |
118 | error = -EFAULT; |
119 | else | |
120 | error = count - buf.count; | |
1da177e4 LT |
121 | } |
122 | ||
2903ff01 | 123 | fdput(arg); |
1da177e4 LT |
124 | return error; |
125 | } | |
126 | ||
127 | int hpux_mount(const char *fs, const char *path, int mflag, | |
128 | const char *fstype, const char *dataptr, int datalen) | |
129 | { | |
130 | return -ENOSYS; | |
131 | } | |
132 | ||
e51ec241 | 133 | static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
134 | { |
135 | struct hpux_stat64 tmp; | |
136 | ||
137 | /* we probably want a different split here - is hpux 12:20? */ | |
138 | ||
139 | if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev)) | |
140 | return -EOVERFLOW; | |
141 | ||
142 | memset(&tmp, 0, sizeof(tmp)); | |
143 | tmp.st_dev = new_encode_dev(stat->dev); | |
144 | tmp.st_ino = stat->ino; | |
145 | tmp.st_mode = stat->mode; | |
146 | tmp.st_nlink = stat->nlink; | |
a7c1938e EB |
147 | tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid); |
148 | tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid); | |
1da177e4 LT |
149 | tmp.st_rdev = new_encode_dev(stat->rdev); |
150 | tmp.st_size = stat->size; | |
151 | tmp.st_atime = stat->atime.tv_sec; | |
152 | tmp.st_mtime = stat->mtime.tv_sec; | |
153 | tmp.st_ctime = stat->ctime.tv_sec; | |
154 | tmp.st_blocks = stat->blocks; | |
155 | tmp.st_blksize = stat->blksize; | |
156 | return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0; | |
157 | } | |
158 | ||
c7887325 | 159 | long hpux_stat64(const char __user *filename, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
160 | { |
161 | struct kstat stat; | |
162 | int error = vfs_stat(filename, &stat); | |
163 | ||
164 | if (!error) | |
165 | error = cp_hpux_stat(&stat, statbuf); | |
166 | ||
167 | return error; | |
168 | } | |
169 | ||
e51ec241 | 170 | long hpux_fstat64(unsigned int fd, struct hpux_stat64 __user *statbuf) |
1da177e4 LT |
171 | { |
172 | struct kstat stat; | |
173 | int error = vfs_fstat(fd, &stat); | |
174 | ||
175 | if (!error) | |
176 | error = cp_hpux_stat(&stat, statbuf); | |
177 | ||
178 | return error; | |
179 | } | |
180 | ||
c7887325 DH |
181 | long hpux_lstat64(const char __user *filename, |
182 | struct hpux_stat64 __user *statbuf) | |
1da177e4 LT |
183 | { |
184 | struct kstat stat; | |
185 | int error = vfs_lstat(filename, &stat); | |
186 | ||
187 | if (!error) | |
188 | error = cp_hpux_stat(&stat, statbuf); | |
189 | ||
190 | return error; | |
191 | } |