1 /*-
2 * Copyright (c) 2017 Enji Cooper <ngie@freebsd.org>
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/param.h>
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <kvm.h>
30 #include <limits.h>
31 #include <signal.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34
35 #include <atf-c.h>
36
37 #include "kvm_private.h"
38
39 #include "kvm_test_common.h"
40
41 ATF_TC(kvm_geterr_negative_test_NULL);
ATF_TC_HEAD(kvm_geterr_negative_test_NULL,tc)42 ATF_TC_HEAD(kvm_geterr_negative_test_NULL, tc)
43 {
44
45 atf_tc_set_md_var(tc, "descr",
46 "test that kvm_geterr(NULL) returns NULL");
47 }
48
ATF_TC_BODY(kvm_geterr_negative_test_NULL,tc)49 ATF_TC_BODY(kvm_geterr_negative_test_NULL, tc)
50 {
51
52 ATF_REQUIRE(!errbuf_has_error(kvm_geterr(NULL)));
53 }
54
55 /* 1100090 was where kvm_open2(3) was introduced. */
56 #if __FreeBSD_version >= 1100091
57 ATF_TC(kvm_geterr_positive_test_error);
ATF_TC_HEAD(kvm_geterr_positive_test_error,tc)58 ATF_TC_HEAD(kvm_geterr_positive_test_error, tc)
59 {
60
61 atf_tc_set_md_var(tc, "descr",
62 "test that kvm_geterr(kd) when kd doesn't contain an error returns \"\"");
63 atf_tc_set_md_var(tc, "require.user", "root");
64 }
65
ATF_TC_BODY(kvm_geterr_positive_test_error,tc)66 ATF_TC_BODY(kvm_geterr_positive_test_error, tc)
67 {
68 kvm_t *kd;
69 char *error_msg;
70
71 errbuf_clear();
72 kd = kvm_open2(NULL, NULL, O_RDONLY, errbuf, NULL);
73 ATF_CHECK(!errbuf_has_error(errbuf));
74 ATF_REQUIRE_MSG(kd != NULL, "kvm_open2 failed: %s", errbuf);
75 ATF_REQUIRE_MSG(kvm_write(kd, 0, NULL, 0) == -1,
76 "kvm_write succeeded unexpectedly on an O_RDONLY file descriptor");
77 error_msg = kvm_geterr(kd);
78 ATF_CHECK(errbuf_has_error(error_msg));
79 ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
80 strerror(errno));
81 }
82
83 ATF_TC(kvm_geterr_positive_test_no_error);
ATF_TC_HEAD(kvm_geterr_positive_test_no_error,tc)84 ATF_TC_HEAD(kvm_geterr_positive_test_no_error, tc)
85 {
86
87 atf_tc_set_md_var(tc, "descr",
88 "test that kvm_geterr(kd) when kd contains an error returns an error message");
89 atf_tc_set_md_var(tc, "require.user", "root");
90 }
91
ATF_TC_BODY(kvm_geterr_positive_test_no_error,tc)92 ATF_TC_BODY(kvm_geterr_positive_test_no_error, tc)
93 {
94 #define ALL_IS_WELL "that ends well"
95 kvm_t *kd;
96 char *error_msg;
97 struct nlist nl[] = {
98 #define SYMNAME "_mp_maxcpus"
99 #define X_MAXCPUS 0
100 { SYMNAME, 0, 0, 0, 0 },
101 { NULL, 0, 0, 0, 0 },
102 };
103 ssize_t rc;
104 int mp_maxcpus, retcode;
105
106 errbuf_clear();
107 kd = kvm_open2(NULL, NULL, O_RDONLY, errbuf, NULL);
108 ATF_CHECK(!errbuf_has_error(errbuf));
109 ATF_REQUIRE_MSG(kd != NULL, "kvm_open2 failed: %s", errbuf);
110 retcode = kvm_nlist(kd, nl);
111 ATF_REQUIRE_MSG(retcode != -1,
112 "kvm_nlist failed (returned %d): %s", retcode, kvm_geterr(kd));
113 if (nl[X_MAXCPUS].n_type == 0)
114 atf_tc_skip("symbol (\"%s\") couldn't be found", SYMNAME);
115 _kvm_err(kd, NULL, "%s", ALL_IS_WELL); /* XXX: internal API */
116 rc = kvm_read(kd, nl[X_MAXCPUS].n_value, &mp_maxcpus,
117 sizeof(mp_maxcpus));
118
119 ATF_REQUIRE_MSG(rc != -1, "kvm_read failed: %s", kvm_geterr(kd));
120 error_msg = kvm_geterr(kd);
121 ATF_REQUIRE_MSG(strcmp(error_msg, ALL_IS_WELL) == 0,
122 "error message changed: %s", error_msg);
123 ATF_REQUIRE_MSG(kvm_close(kd) == 0, "kvm_close failed: %s",
124 strerror(errno));
125 }
126 #endif
127
ATF_TP_ADD_TCS(tp)128 ATF_TP_ADD_TCS(tp)
129 {
130
131 ATF_TP_ADD_TC(tp, kvm_geterr_negative_test_NULL);
132 #if __FreeBSD_version >= 1100091
133 ATF_TP_ADD_TC(tp, kvm_geterr_positive_test_error);
134 ATF_TP_ADD_TC(tp, kvm_geterr_positive_test_no_error);
135 #endif
136
137 return (atf_no_error());
138 }
139