1 /*-
2 * Copyright (c) 2017 Enji Cooper <[email protected]>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 #include <sys/cdefs.h>
27 __FBSDID("$FreeBSD$");
28
29 #include <sys/param.h>
30 #include <errno.h>
31 #include <fcntl.h>
32 #include <kvm.h>
33 #include <limits.h>
34 #include <signal.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37
38 #include <atf-c.h>
39
40 #include "kvm_private.h"
41
42 #include "kvm_test_common.h"
43
44 ATF_TC(kvm_geterr_negative_test_NULL);
ATF_TC_HEAD(kvm_geterr_negative_test_NULL,tc)45 ATF_TC_HEAD(kvm_geterr_negative_test_NULL, tc)
46 {
47
48 atf_tc_set_md_var(tc, "descr",
49 "test that kvm_geterr(NULL) returns NULL");
50 }
51
ATF_TC_BODY(kvm_geterr_negative_test_NULL,tc)52 ATF_TC_BODY(kvm_geterr_negative_test_NULL, tc)
53 {
54
55 ATF_REQUIRE(!errbuf_has_error(kvm_geterr(NULL)));
56 }
57
58 /* 1100090 was where kvm_open2(3) was introduced. */
59 #if __FreeBSD_version >= 1100091
60 ATF_TC(kvm_geterr_positive_test_error);
ATF_TC_HEAD(kvm_geterr_positive_test_error,tc)61 ATF_TC_HEAD(kvm_geterr_positive_test_error, tc)
62 {
63
64 atf_tc_set_md_var(tc, "descr",
65 "test that kvm_geterr(kd) when kd doesn't contain an error returns \"\"");
66 atf_tc_set_md_var(tc, "require.user", "root");
67 }
68
ATF_TC_BODY(kvm_geterr_positive_test_error,tc)69 ATF_TC_BODY(kvm_geterr_positive_test_error, tc)
70 {
71 kvm_t *kd;
72 char *error_msg;
73
74 errbuf_clear();
75 kd = kvm_open2(NULL, NULL, O_RDONLY, errbuf, NULL);
76 ATF_CHECK(!errbuf_has_error(errbuf));
77 ATF_REQUIRE_MSG(kd != NULL, "kvm_open2 failed: %s", errbuf);
78 ATF_REQUIRE_MSG(kvm_write(kd, 0, NULL, 0) == -1,
79 "kvm_write succeeded unexpectedly on an O_RDONLY file descriptor");
80 error_msg = kvm_geterr(kd);
81 ATF_CHECK(errbuf_has_error(error_msg));
82 ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
83 strerror(errno));
84 }
85
86 ATF_TC(kvm_geterr_positive_test_no_error);
ATF_TC_HEAD(kvm_geterr_positive_test_no_error,tc)87 ATF_TC_HEAD(kvm_geterr_positive_test_no_error, tc)
88 {
89
90 atf_tc_set_md_var(tc, "descr",
91 "test that kvm_geterr(kd) when kd contains an error returns an error message");
92 atf_tc_set_md_var(tc, "require.user", "root");
93 }
94
ATF_TC_BODY(kvm_geterr_positive_test_no_error,tc)95 ATF_TC_BODY(kvm_geterr_positive_test_no_error, tc)
96 {
97 #define ALL_IS_WELL "that ends well"
98 kvm_t *kd;
99 char *error_msg;
100 struct nlist nl[] = {
101 #define SYMNAME "_mp_maxcpus"
102 #define X_MAXCPUS 0
103 { SYMNAME, 0, 0, 0, 0 },
104 { NULL, 0, 0, 0, 0 },
105 };
106 ssize_t rc;
107 int mp_maxcpus, retcode;
108
109 errbuf_clear();
110 kd = kvm_open2(NULL, NULL, O_RDONLY, errbuf, NULL);
111 ATF_CHECK(!errbuf_has_error(errbuf));
112 ATF_REQUIRE_MSG(kd != NULL, "kvm_open2 failed: %s", errbuf);
113 retcode = kvm_nlist(kd, nl);
114 ATF_REQUIRE_MSG(retcode != -1,
115 "kvm_nlist failed (returned %d): %s", retcode, kvm_geterr(kd));
116 if (nl[X_MAXCPUS].n_type == 0)
117 atf_tc_skip("symbol (\"%s\") couldn't be found", SYMNAME);
118 _kvm_err(kd, NULL, "%s", ALL_IS_WELL); /* XXX: internal API */
119 rc = kvm_read(kd, nl[X_MAXCPUS].n_value, &mp_maxcpus,
120 sizeof(mp_maxcpus));
121
122 ATF_REQUIRE_MSG(rc != -1, "kvm_read failed: %s", kvm_geterr(kd));
123 error_msg = kvm_geterr(kd);
124 ATF_REQUIRE_MSG(strcmp(error_msg, ALL_IS_WELL) == 0,
125 "error message changed: %s", error_msg);
126 ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
127 strerror(errno));
128 }
129 #endif
130
ATF_TP_ADD_TCS(tp)131 ATF_TP_ADD_TCS(tp)
132 {
133
134 ATF_TP_ADD_TC(tp, kvm_geterr_negative_test_NULL);
135 #if __FreeBSD_version >= 1100091
136 ATF_TP_ADD_TC(tp, kvm_geterr_positive_test_error);
137 ATF_TP_ADD_TC(tp, kvm_geterr_positive_test_no_error);
138 #endif
139
140 return (atf_no_error());
141 }
142