1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
/*
* Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/vfs.h>
#include <sys/cdefs.h>
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/vnode.h>
#include <fs/initramfs.h>
#include <fs/devfs.h>
#include <fs/procfs.h>
#include <assert.h>
#include <string.h>
__MODULE_NAME("vfs");
__KERNEL_META("$Hyra$: vfs.c, Ian Marco Moffett, "
"Hyra Virtual File System");
#define INITRAMFS_ID 0
#define DEVFS_ID 1
#define PROCFS_ID 2
static struct fs_info filesystems[] = {
[INITRAMFS_ID] = { "initramfs", &g_initramfs_ops, NULL},
[DEVFS_ID] = { "dev", &g_devfs_ops, &g_devfs_vops },
[PROCFS_ID] = { "proc", &g_procfs_ops, &g_procfs_vops }
};
struct vnode *g_root_vnode = NULL;
struct fs_info *
vfs_byname(const char *name)
{
for (int i = 0; i < __ARRAY_COUNT(filesystems); ++i) {
if (strcmp(filesystems[i].name, name) == 0) {
return &filesystems[i];
}
}
return NULL;
}
void
vfs_init(void)
{
struct fs_info *info;
struct vfsops *vfsops;
vfs_mount_init();
__assert(vfs_alloc_vnode(&g_root_vnode, NULL, VDIR) == 0);
for (int i = 0; i < __ARRAY_COUNT(filesystems); ++i) {
info = &filesystems[i];
vfsops = info->vfsops;
__assert(vfsops->init != NULL);
__assert(vfs_mount(info->name, 0, info) == 0);
vfsops->init(info, NULL);
}
g_root_vnode->vops = &g_initramfs_vops;
g_root_vnode->fs = &filesystems[INITRAMFS_ID];
}
|
