1 /*
2 * Copyright (c) International Business Machines Corp., 2003
3 * AUTHOR: Paul Larson <plars@linuxtestproject.org>
4 * Copyright (c) 2016 Cyril Hrubis <chrubis@suse.cz>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
14 * the GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include <ctype.h>
22 #include <stdlib.h>
23 #include <unistd.h>
24 #include <string.h>
25 #include <limits.h>
26 #include <sys/utsname.h>
27 #include "test.h"
28
29 #define OSRELEASE_PATH "/etc/os-release"
30
parse_digit(const char * str,int * d)31 static char *parse_digit(const char *str, int *d)
32 {
33 unsigned long v;
34 char *end;
35
36 v = strtoul(str, &end, 10);
37 if (str == end)
38 return NULL;
39
40 if (v > INT_MAX)
41 return NULL;
42
43 *d = v;
44
45 return end;
46 }
47
tst_parse_kver(const char * str_kver,int * v1,int * v2,int * v3)48 int tst_parse_kver(const char *str_kver, int *v1, int *v2, int *v3)
49 {
50 const char *str = str_kver;
51
52 *v1 = 0;
53 *v2 = 0;
54 *v3 = 0;
55
56 if (!(str = parse_digit(str, v1)))
57 return 1;
58
59 if (*(str++) != '.')
60 return 1;
61
62 if (!(str = parse_digit(str, v2)))
63 return 1;
64
65 /*
66 * Check for a short version e.g '2.4'
67 */
68 if (*str == ' ' || *str == '\0' || *str == '-')
69 return 0;
70
71 if (*(str++) != '.')
72 return 1;
73
74 /*
75 * Ignore rest of the string in order not to break on versions as
76 * 4.8.1-52-default.
77 */
78 if (!parse_digit(str, v3))
79 return 1;
80
81 return 0;
82 }
83
tst_kvcmp(const char * cur_kver,int r1,int r2,int r3)84 int tst_kvcmp(const char *cur_kver, int r1, int r2, int r3)
85 {
86 int a1, a2, a3;
87 int testver, currver;
88
89 if (tst_parse_kver(cur_kver, &a1, &a2, &a3)) {
90 tst_resm(TWARN,
91 "Invalid kernel version %s, expected %%d.%%d.%%d",
92 cur_kver);
93 }
94
95 testver = (r1 << 16) + (r2 << 8) + r3;
96 currver = (a1 << 16) + (a2 << 8) + a3;
97
98 return currver - testver;
99 }
100
tst_kvercmp(int r1,int r2,int r3)101 int tst_kvercmp(int r1, int r2, int r3)
102 {
103 struct utsname uval;
104
105 uname(&uval);
106
107 return tst_kvcmp(uval.release, r1, r2, r3);
108 }
109
tst_kvexcmp(const char * tst_exv,const char * cur_ver)110 int tst_kvexcmp(const char *tst_exv, const char *cur_ver)
111 {
112 int c1 = 0, c2 = 0, c3 = 0, c4 = 0, c5 = 0;
113 int t1 = 0, t2 = 0, t3 = 0, t4 = 0, t5 = 0;
114 int ret;
115
116 sscanf(cur_ver, "%d.%d.%d-%d.%d", &c1, &c2, &c3, &c4, &c5);
117 sscanf(tst_exv, "%d.%d.%d-%d.%d", &t1, &t2, &t3, &t4, &t5);
118
119 if ((ret = c1 - t1))
120 return ret;
121 if ((ret = c2 - t2))
122 return ret;
123 if ((ret = c3 - t3))
124 return ret;
125 if ((ret = c4 - t4))
126 return ret;
127
128 return c5 - t5;
129 }
130
tst_kvcmp_distname(const char * kver)131 const char *tst_kvcmp_distname(const char *kver)
132 {
133 static char distname[64];
134 char *ret = distname;
135 char *p = distname;
136
137 if (strstr(kver, ".el5uek"))
138 return "OL5UEK";
139
140 if (strstr(kver, ".el5"))
141 return "RHEL5";
142
143 if (strstr(kver, ".el6uek"))
144 return "OL6UEK";
145
146 if (strstr(kver, ".el6"))
147 return "RHEL6";
148
149 if (strstr(kver, ".el7"))
150 return "RHEL7";
151
152 if (strstr(kver, ".el8"))
153 return "RHEL8";
154
155 if (access(OSRELEASE_PATH, F_OK) != -1) {
156 SAFE_FILE_LINES_SCANF(NULL, OSRELEASE_PATH, "ID=%s", distname);
157
158 if (p[0] == '"') {
159 ret = distname + 1;
160 p = ret;
161 }
162
163 while (*p) {
164 if (*p == '"') {
165 *p = 0;
166 break;
167 }
168 *p = toupper((unsigned char)*p);
169 p++;
170 }
171
172 return ret;
173 }
174
175 return NULL;
176 }
177
tst_kvercmp2(int r1,int r2,int r3,struct tst_kern_exv * vers)178 int tst_kvercmp2(int r1, int r2, int r3, struct tst_kern_exv *vers)
179 {
180 int i;
181 const char *kver;
182 struct utsname uval;
183 const char *cur_dist_name;
184
185 uname(&uval);
186 kver = uval.release;
187 cur_dist_name = tst_kvcmp_distname(kver);
188
189 if (cur_dist_name == NULL)
190 return tst_kvercmp(r1, r2, r3);
191
192 for (i = 0; vers[i].dist_name; i++) {
193 if (!strcmp(vers[i].dist_name, cur_dist_name)) {
194 tst_resm(TINFO, "Detected %s using kernel version %s",
195 cur_dist_name, kver);
196 return tst_kvexcmp(vers[i].extra_ver, kver);
197 }
198 }
199
200 return tst_kvcmp(kver, r1, r2, r3);
201 }
202