1/*-
2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
28__FBSDID("$FreeBSD: head/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c 218665 2011-02-13 19:46:55Z marcel $");
| 28__FBSDID("$FreeBSD: head/sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c 241896 2012-10-22 17:50:54Z kib $");
|
29
30#include <sys/types.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/systm.h>
34#include <sys/kthread.h>
35#include <sys/namei.h>
36#include <sys/proc.h>
37#include <sys/filedesc.h>
38#include <sys/fcntl.h>
39#include <sys/linker.h>
40#include <sys/kobj.h>
41
42void
43kobj_free(void *address, size_t size)
44{
45
46 kmem_free(address, size);
47}
48
49void *
50kobj_alloc(size_t size, int flag)
51{
52
53 return (kmem_alloc(size, (flag & KM_NOWAIT) ? KM_NOSLEEP : KM_SLEEP));
54}
55
56void *
57kobj_zalloc(size_t size, int flag)
58{
59 void *p;
60
61 if ((p = kobj_alloc(size, flag)) != NULL)
62 bzero(p, size);
63 return (p);
64}
65
66static void *
67kobj_open_file_vnode(const char *file)
68{
69 struct thread *td = curthread;
70 struct filedesc *fd;
71 struct nameidata nd;
| 29
30#include <sys/types.h>
31#include <sys/systm.h>
32#include <sys/kernel.h>
33#include <sys/systm.h>
34#include <sys/kthread.h>
35#include <sys/namei.h>
36#include <sys/proc.h>
37#include <sys/filedesc.h>
38#include <sys/fcntl.h>
39#include <sys/linker.h>
40#include <sys/kobj.h>
41
42void
43kobj_free(void *address, size_t size)
44{
45
46 kmem_free(address, size);
47}
48
49void *
50kobj_alloc(size_t size, int flag)
51{
52
53 return (kmem_alloc(size, (flag & KM_NOWAIT) ? KM_NOSLEEP : KM_SLEEP));
54}
55
56void *
57kobj_zalloc(size_t size, int flag)
58{
59 void *p;
60
61 if ((p = kobj_alloc(size, flag)) != NULL)
62 bzero(p, size);
63 return (p);
64}
65
66static void *
67kobj_open_file_vnode(const char *file)
68{
69 struct thread *td = curthread;
70 struct filedesc *fd;
71 struct nameidata nd;
|
72 int error, flags, vfslocked;
| 72 int error, flags;
|
73
74 fd = td->td_proc->p_fd;
75 FILEDESC_XLOCK(fd);
76 if (fd->fd_rdir == NULL) {
77 fd->fd_rdir = rootvnode;
78 vref(fd->fd_rdir);
79 }
80 if (fd->fd_cdir == NULL) {
81 fd->fd_cdir = rootvnode;
82 vref(fd->fd_cdir);
83 }
84 FILEDESC_XUNLOCK(fd);
85
86 flags = FREAD | O_NOFOLLOW;
| 73
74 fd = td->td_proc->p_fd;
75 FILEDESC_XLOCK(fd);
76 if (fd->fd_rdir == NULL) {
77 fd->fd_rdir = rootvnode;
78 vref(fd->fd_rdir);
79 }
80 if (fd->fd_cdir == NULL) {
81 fd->fd_cdir = rootvnode;
82 vref(fd->fd_cdir);
83 }
84 FILEDESC_XUNLOCK(fd);
85
86 flags = FREAD | O_NOFOLLOW;
|
87 NDINIT(&nd, LOOKUP, MPSAFE, UIO_SYSSPACE, file, td);
| 87 NDINIT(&nd, LOOKUP, 0, UIO_SYSSPACE, file, td);
|
88 error = vn_open_cred(&nd, &flags, 0, 0, curthread->td_ucred, NULL);
89 if (error != 0)
90 return (NULL);
| 88 error = vn_open_cred(&nd, &flags, 0, 0, curthread->td_ucred, NULL);
89 if (error != 0)
90 return (NULL);
|
91 vfslocked = NDHASGIANT(&nd);
| |
92 NDFREE(&nd, NDF_ONLY_PNBUF);
93 /* We just unlock so we hold a reference. */
94 VOP_UNLOCK(nd.ni_vp, 0);
| 91 NDFREE(&nd, NDF_ONLY_PNBUF);
92 /* We just unlock so we hold a reference. */
93 VOP_UNLOCK(nd.ni_vp, 0);
|
95 VFS_UNLOCK_GIANT(vfslocked);
| |
96 return (nd.ni_vp);
97}
98
99static void *
100kobj_open_file_loader(const char *file)
101{
102
103 return (preload_search_by_name(file));
104}
105
106struct _buf *
107kobj_open_file(const char *file)
108{
109 struct _buf *out;
110
111 out = kmem_alloc(sizeof(*out), KM_SLEEP);
112 out->mounted = root_mounted();
113 /*
114 * If root is already mounted we read file using file system,
115 * if not, we use loader.
116 */
117 if (out->mounted)
118 out->ptr = kobj_open_file_vnode(file);
119 else
120 out->ptr = kobj_open_file_loader(file);
121 if (out->ptr == NULL) {
122 kmem_free(out, sizeof(*out));
123 return ((struct _buf *)-1);
124 }
125 return (out);
126}
127
128static int
129kobj_get_filesize_vnode(struct _buf *file, uint64_t *size)
130{
131 struct vnode *vp = file->ptr;
132 struct vattr va;
| 94 return (nd.ni_vp);
95}
96
97static void *
98kobj_open_file_loader(const char *file)
99{
100
101 return (preload_search_by_name(file));
102}
103
104struct _buf *
105kobj_open_file(const char *file)
106{
107 struct _buf *out;
108
109 out = kmem_alloc(sizeof(*out), KM_SLEEP);
110 out->mounted = root_mounted();
111 /*
112 * If root is already mounted we read file using file system,
113 * if not, we use loader.
114 */
115 if (out->mounted)
116 out->ptr = kobj_open_file_vnode(file);
117 else
118 out->ptr = kobj_open_file_loader(file);
119 if (out->ptr == NULL) {
120 kmem_free(out, sizeof(*out));
121 return ((struct _buf *)-1);
122 }
123 return (out);
124}
125
126static int
127kobj_get_filesize_vnode(struct _buf *file, uint64_t *size)
128{
129 struct vnode *vp = file->ptr;
130 struct vattr va;
|
133 int error, vfslocked;
| 131 int error;
|
134
| 132
|
135 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
| |
136 vn_lock(vp, LK_SHARED | LK_RETRY);
137 error = VOP_GETATTR(vp, &va, curthread->td_ucred);
138 VOP_UNLOCK(vp, 0);
139 if (error == 0)
140 *size = (uint64_t)va.va_size;
| 133 vn_lock(vp, LK_SHARED | LK_RETRY);
134 error = VOP_GETATTR(vp, &va, curthread->td_ucred);
135 VOP_UNLOCK(vp, 0);
136 if (error == 0)
137 *size = (uint64_t)va.va_size;
|
141 VFS_UNLOCK_GIANT(vfslocked);
| |
142 return (error);
143}
144
145static int
146kobj_get_filesize_loader(struct _buf *file, uint64_t *size)
147{
148 void *ptr;
149
150 ptr = preload_search_info(file->ptr, MODINFO_SIZE);
151 if (ptr == NULL)
152 return (ENOENT);
153 *size = (uint64_t)*(size_t *)ptr;
154 return (0);
155}
156
157int
158kobj_get_filesize(struct _buf *file, uint64_t *size)
159{
160
161 if (file->mounted)
162 return (kobj_get_filesize_vnode(file, size));
163 else
164 return (kobj_get_filesize_loader(file, size));
165}
166
167int
168kobj_read_file_vnode(struct _buf *file, char *buf, unsigned size, unsigned off)
169{
170 struct vnode *vp = file->ptr;
171 struct thread *td = curthread;
172 struct uio auio;
173 struct iovec aiov;
| 138 return (error);
139}
140
141static int
142kobj_get_filesize_loader(struct _buf *file, uint64_t *size)
143{
144 void *ptr;
145
146 ptr = preload_search_info(file->ptr, MODINFO_SIZE);
147 if (ptr == NULL)
148 return (ENOENT);
149 *size = (uint64_t)*(size_t *)ptr;
150 return (0);
151}
152
153int
154kobj_get_filesize(struct _buf *file, uint64_t *size)
155{
156
157 if (file->mounted)
158 return (kobj_get_filesize_vnode(file, size));
159 else
160 return (kobj_get_filesize_loader(file, size));
161}
162
163int
164kobj_read_file_vnode(struct _buf *file, char *buf, unsigned size, unsigned off)
165{
166 struct vnode *vp = file->ptr;
167 struct thread *td = curthread;
168 struct uio auio;
169 struct iovec aiov;
|
174 int error, vfslocked;
| 170 int error;
|
175
176 bzero(&aiov, sizeof(aiov));
177 bzero(&auio, sizeof(auio));
178
179 aiov.iov_base = buf;
180 aiov.iov_len = size;
181
182 auio.uio_iov = &aiov;
183 auio.uio_offset = (off_t)off;
184 auio.uio_segflg = UIO_SYSSPACE;
185 auio.uio_rw = UIO_READ;
186 auio.uio_iovcnt = 1;
187 auio.uio_resid = size;
188 auio.uio_td = td;
189
| 171
172 bzero(&aiov, sizeof(aiov));
173 bzero(&auio, sizeof(auio));
174
175 aiov.iov_base = buf;
176 aiov.iov_len = size;
177
178 auio.uio_iov = &aiov;
179 auio.uio_offset = (off_t)off;
180 auio.uio_segflg = UIO_SYSSPACE;
181 auio.uio_rw = UIO_READ;
182 auio.uio_iovcnt = 1;
183 auio.uio_resid = size;
184 auio.uio_td = td;
185
|
190 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
| |
191 vn_lock(vp, LK_SHARED | LK_RETRY);
192 error = VOP_READ(vp, &auio, IO_UNIT | IO_SYNC, td->td_ucred);
193 VOP_UNLOCK(vp, 0);
| 186 vn_lock(vp, LK_SHARED | LK_RETRY);
187 error = VOP_READ(vp, &auio, IO_UNIT | IO_SYNC, td->td_ucred);
188 VOP_UNLOCK(vp, 0);
|
194 VFS_UNLOCK_GIANT(vfslocked);
| |
195 return (error != 0 ? -1 : size - auio.uio_resid);
196}
197
198int
199kobj_read_file_loader(struct _buf *file, char *buf, unsigned size, unsigned off)
200{
201 char *ptr;
202
203 ptr = preload_fetch_addr(file->ptr);
204 if (ptr == NULL)
205 return (ENOENT);
206 bcopy(ptr + off, buf, size);
207 return (0);
208}
209
210int
211kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off)
212{
213
214 if (file->mounted)
215 return (kobj_read_file_vnode(file, buf, size, off));
216 else
217 return (kobj_read_file_loader(file, buf, size, off));
218}
219
220void
221kobj_close_file(struct _buf *file)
222{
223
| 189 return (error != 0 ? -1 : size - auio.uio_resid);
190}
191
192int
193kobj_read_file_loader(struct _buf *file, char *buf, unsigned size, unsigned off)
194{
195 char *ptr;
196
197 ptr = preload_fetch_addr(file->ptr);
198 if (ptr == NULL)
199 return (ENOENT);
200 bcopy(ptr + off, buf, size);
201 return (0);
202}
203
204int
205kobj_read_file(struct _buf *file, char *buf, unsigned size, unsigned off)
206{
207
208 if (file->mounted)
209 return (kobj_read_file_vnode(file, buf, size, off));
210 else
211 return (kobj_read_file_loader(file, buf, size, off));
212}
213
214void
215kobj_close_file(struct _buf *file)
216{
217
|
224 if (file->mounted) {
225 struct vnode *vp = file->ptr;
226 struct thread *td = curthread;
227 int vfslocked;
228
229 vfslocked = VFS_LOCK_GIANT(vp->v_mount);
230 vn_close(vp, FREAD, td->td_ucred, td);
231 VFS_UNLOCK_GIANT(vfslocked);
232 }
| 218 if (file->mounted)
219 vn_close(file->ptr, FREAD, curthread->td_ucred, curthread);
|
233 kmem_free(file, sizeof(*file));
234}
| 220 kmem_free(file, sizeof(*file));
221}
|