aboutsummaryrefslogtreecommitdiffstats
path: root/module/splat/splat-kobj.c
blob: 2137ab02a856fb5d3e28152365361704d2db0967 (plain)
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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
/*
 *  This file is part of the SPL: Solaris Porting Layer.
 *
 *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
 *  Produced at Lawrence Livermore National Laboratory
 *  Written by:
 *          Brian Behlendorf <behlendorf1@llnl.gov>,
 *          Herb Wartens <wartens2@llnl.gov>,
 *          Jim Garlick <garlick@llnl.gov>
 *  UCRL-CODE-235197
 *
 *  This is free software; you can redistribute it and/or modify it
 *  under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This is distributed in the hope that it will be useful, but WITHOUT
 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *  for more details.
 *
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
 */

#include "splat-internal.h"

#define SPLAT_SUBSYSTEM_KOBJ		0x0a00
#define SPLAT_KOBJ_NAME			"kobj"
#define SPLAT_KOBJ_DESC			"Kernel Kobj Tests"

#define SPLAT_KOBJ_TEST1_ID		0x0a01
#define SPLAT_KOBJ_TEST1_NAME		"open"
#define SPLAT_KOBJ_TEST1_DESC		"Kobj Open/Close Test"

#define SPLAT_KOBJ_TEST2_ID		0x0a02
#define SPLAT_KOBJ_TEST2_NAME		"size/read"
#define SPLAT_KOBJ_TEST2_DESC		"Kobj Size/Read Test"

#define SPLAT_KOBJ_TEST_FILE		"/etc/fstab"

static int
splat_kobj_test1(struct file *file, void *arg)
{
	struct _buf *f;

	f = kobj_open_file(SPLAT_KOBJ_TEST_FILE);
	if (f == (struct _buf *)-1) {
		splat_vprint(file, SPLAT_KOBJ_TEST1_NAME, "Failed to open "
			     "test file: %s\n", SPLAT_KOBJ_TEST_FILE);
		return -ENOENT;
	}

	kobj_close_file(f);
	splat_vprint(file, SPLAT_KOBJ_TEST1_NAME, "Successfully opened and "
		     "closed test file: %s\n", SPLAT_KOBJ_TEST_FILE);

        return 0;
} /* splat_kobj_test1() */

static int
splat_kobj_test2(struct file *file, void *arg)
{
	struct _buf *f;
	char *buf;
	uint64_t size;
	int rc;

	f = kobj_open_file(SPLAT_KOBJ_TEST_FILE);
	if (f == (struct _buf *)-1) {
		splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "Failed to open "
			     "test file: %s\n", SPLAT_KOBJ_TEST_FILE);
		return -ENOENT;
	}

	rc = kobj_get_filesize(f, &size);
	if (rc) {
		splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "Failed stat of "
			     "test file: %s (%d)\n", SPLAT_KOBJ_TEST_FILE, rc);
		goto out;
	}

	buf = kmalloc(size + 1, GFP_KERNEL);
	if (!buf) {
		rc = -ENOMEM;
		splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "Failed to alloc "
			     "%lld bytes for tmp buffer (%d)\n", size, rc);
		goto out;
	}

	memset(buf, 0, size + 1);
	rc = kobj_read_file(f, buf, size, 0);
	if (rc < 0) {
		splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "Failed read of "
			     "test file: %s (%d)\n", SPLAT_KOBJ_TEST_FILE, rc);
		goto out2;
	}

	/* Validate we read as many bytes as expected based on the stat.  This
	 * isn't a perfect test since we didn't create the file however it is
	 * pretty unlikely there are garbage characters in your /etc/fstab */
	if (size != (uint64_t)strlen(buf)) {
		rc = -EFBIG;
		splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "Stat'ed size "
			     "(%lld) does not match number of bytes read "
			     "(%lld)\n", size, (uint64_t)strlen(buf));
		goto out2;
	}

	rc = 0;
	splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "\n%s\n", buf);
	splat_vprint(file, SPLAT_KOBJ_TEST2_NAME, "Successfully stat'ed "
		     "and read expected number of bytes (%lld) from test "
		     "file: %s\n", size, SPLAT_KOBJ_TEST_FILE);
out2:
	kfree(buf);
out:
	kobj_close_file(f);

        return rc;
} /* splat_kobj_test2() */

splat_subsystem_t *
splat_kobj_init(void)
{
        splat_subsystem_t *sub;

        sub = kmalloc(sizeof(*sub), GFP_KERNEL);
        if (sub == NULL)
                return NULL;

        memset(sub, 0, sizeof(*sub));
        strncpy(sub->desc.name, SPLAT_KOBJ_NAME, SPLAT_NAME_SIZE);
	strncpy(sub->desc.desc, SPLAT_KOBJ_DESC, SPLAT_DESC_SIZE);
        INIT_LIST_HEAD(&sub->subsystem_list);
	INIT_LIST_HEAD(&sub->test_list);
        spin_lock_init(&sub->test_lock);
        sub->desc.id = SPLAT_SUBSYSTEM_KOBJ;

        SPLAT_TEST_INIT(sub, SPLAT_KOBJ_TEST1_NAME, SPLAT_KOBJ_TEST1_DESC,
	              SPLAT_KOBJ_TEST1_ID, splat_kobj_test1);
        SPLAT_TEST_INIT(sub, SPLAT_KOBJ_TEST2_NAME, SPLAT_KOBJ_TEST2_DESC,
	              SPLAT_KOBJ_TEST2_ID, splat_kobj_test2);

        return sub;
} /* splat_kobj_init() */

void
splat_kobj_fini(splat_subsystem_t *sub)
{
        ASSERT(sub);

        SPLAT_TEST_FINI(sub, SPLAT_KOBJ_TEST2_ID);
        SPLAT_TEST_FINI(sub, SPLAT_KOBJ_TEST1_ID);

        kfree(sub);
} /* splat_kobj_fini() */

int
splat_kobj_id(void)
{
        return SPLAT_SUBSYSTEM_KOBJ;
} /* splat_kobj_id() */