kernel - use new td_ucred in numerous places
[dragonfly.git] / sys / emulation / dragonfly12 / dfbsd12_stat.c
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1/*-
2 * Copyright (c) 2005 The DragonFly Project. All rights reserved.
3 *
4 * This code is derived from software contributed to The DragonFly Project
5 * by Joerg Sonnenberger <joerg@bec.de>.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
16 * distribution.
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
67863d04 34 * $DragonFly: src/sys/emulation/dragonfly12/dfbsd12_stat.c,v 1.4 2008/09/17 21:44:16 dillon Exp $
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35 */
36
37#include "opt_compatdf12.h"
38
39#include <sys/param.h>
40#include <sys/kern_syscall.h>
41#include <sys/mount.h>
42#include <sys/nlookup.h>
43#include <sys/proc.h>
895c1f85 44#include <sys/priv.h>
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45#include <sys/stat.h>
46#include <sys/sysproto.h>
47#include <sys/systm.h>
48#include <sys/thread.h>
49#include <sys/vnode.h>
50#include <emulation/dragonfly12/stat.h>
51
52static void
53cvtstat(struct dfbsd12_stat *oldstat, struct stat *newstat)
54{
55 bzero(oldstat, sizeof(oldstat));
56
57 oldstat->st_dev = newstat->st_dev;
58 oldstat->st_ino = newstat->st_ino; /* truncation */
59 oldstat->st_mode = newstat->st_mode;
60 oldstat->st_nlink = newstat->st_nlink; /* truncation */
61 oldstat->st_uid = newstat->st_uid;
62 oldstat->st_gid = newstat->st_gid;
63 oldstat->st_rdev = newstat->st_rdev;
64 oldstat->st_atimespec = newstat->st_atimespec;
65 oldstat->st_mtimespec = newstat->st_mtimespec;
66 oldstat->st_ctimespec = newstat->st_ctimespec;
67 oldstat->st_size = newstat->st_size;
68 oldstat->st_blocks = newstat->st_blocks;
69 oldstat->st_blksize = newstat->st_blksize;
70 oldstat->st_flags = newstat->st_flags;
71 oldstat->st_gen = newstat->st_gen;
72}
73
74/*
75 * stat_args(char *path, struct dfbsd12_stat *ub)
76 *
77 * Get file status; this version follows links.
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78 *
79 * MPALMOSTSAFE
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80 */
81int
753fd850 82sys_dfbsd12_stat(struct dfbsd12_stat_args *uap)
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83{
84 struct nlookupdata nd;
85 struct dfbsd12_stat ost;
86 struct stat st;
87 int error;
88
3919ced0 89 get_mplock();
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90 error = nlookup_init(&nd, uap->path, UIO_USERSPACE, NLC_FOLLOW);
91 if (error == 0) {
92 error = kern_stat(&nd, &st);
93 if (error == 0) {
94 cvtstat(&ost, &st);
95 error = copyout(&ost, uap->ub, sizeof(ost));
96 }
97 }
98 nlookup_done(&nd);
3919ced0 99 rel_mplock();
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100 return (error);
101}
102
103/*
104 * lstat_args(char *path, struct dfbsd12_stat *ub)
105 *
106 * Get file status; this version does not follow links.
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107 *
108 * MPALMOSTSAFE
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109 */
110int
753fd850 111sys_dfbsd12_lstat(struct dfbsd12_lstat_args *uap)
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112{
113 struct nlookupdata nd;
114 struct dfbsd12_stat ost;
115 struct stat st;
116 int error;
117
3919ced0 118 get_mplock();
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119 error = nlookup_init(&nd, uap->path, UIO_USERSPACE, 0);
120 if (error == 0) {
121 error = kern_stat(&nd, &st);
122 if (error == 0) {
123 cvtstat(&ost, &st);
124 error = copyout(&ost, uap->ub, sizeof(ost));
125 }
126 }
127 nlookup_done(&nd);
3919ced0 128 rel_mplock();
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129 return (error);
130}
131
132/*
133 * fhstat_args(struct fhandle *u_fhp, struct dfbsd12_stat *sb)
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134 *
135 * MPALMOSTSAFE
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136 */
137int
753fd850 138sys_dfbsd12_fhstat(struct dfbsd12_fhstat_args *uap)
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139{
140 struct thread *td = curthread;
141 struct dfbsd12_stat osb;
142 struct stat sb;
143 fhandle_t fh;
144 struct mount *mp;
145 struct vnode *vp;
146 int error;
147
148 /*
149 * Must be super user
150 */
895c1f85 151 error = priv_check(td, PRIV_ROOT);
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152 if (error)
153 return (error);
154
155 error = copyin(uap->u_fhp, &fh, sizeof(fhandle_t));
156 if (error)
157 return (error);
158
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159 get_mplock();
160 if ((mp = vfs_getvfs(&fh.fh_fsid)) == NULL) {
161 error = ESTALE;
162 goto done;
163 }
67863d04 164 if ((error = VFS_FHTOVP(mp, NULL, &fh.fh_fid, &vp)))
3919ced0 165 goto done;
9910d07b 166 error = vn_stat(vp, &sb, td->td_ucred);
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167 vput(vp);
168 if (error)
3919ced0 169 goto done;
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170 cvtstat(&osb, &sb);
171 error = copyout(&osb, uap->sb, sizeof(osb));
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172done:
173 rel_mplock();
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174 return (error);
175}
176
177/*
178 * dfbsd12_fstat_args(int fd, struct dfbsd12_stat *sb)
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179 *
180 * MPALMOSTSAFE
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181 */
182int
753fd850 183sys_dfbsd12_fstat(struct dfbsd12_fstat_args *uap)
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184{
185 struct dfbsd12_stat ost;
186 struct stat st;
187 int error;
188
3919ced0 189 get_mplock();
f91a71dd 190 error = kern_fstat(uap->fd, &st);
3919ced0 191 rel_mplock();
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192
193 if (error == 0) {
194 cvtstat(&ost, &st);
195 error = copyout(&ost, uap->sb, sizeof(ost));
196 }
197 return (error);
198}