1 /* 2 * Copyright (c) International Business Machines Corp., 2003 3 * AUTHOR: Paul Larson <plars (at) linuxtestproject.org> 4 * Copyright (c) 2016 Cyril Hrubis <chrubis (at) 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 <stdlib.h> 22 #include <unistd.h> 23 #include <string.h> 24 #include <limits.h> 25 #include <sys/utsname.h> 26 #include "test.h" 27 28 static char *parse_digit(const char *str, int *d) 29 { 30 unsigned long v; 31 char *end; 32 33 v = strtoul(str, &end, 10); 34 if (str == end) 35 return NULL; 36 37 if (v > INT_MAX) 38 return NULL; 39 40 *d = v; 41 42 return end; 43 } 44 45 int tst_parse_kver(const char *str_kver, int *v1, int *v2, int *v3) 46 { 47 const char *str = str_kver; 48 49 *v1 = 0; 50 *v2 = 0; 51 *v3 = 0; 52 53 if (!(str = parse_digit(str, v1))) 54 return 1; 55 56 if (*(str++) != '.') 57 return 1; 58 59 if (!(str = parse_digit(str, v2))) 60 return 1; 61 62 /* 63 * Check for a short version e.g '2.4' 64 */ 65 if (*str == ' ' || *str == '\0') 66 return 0; 67 68 if (*(str++) != '.') 69 return 1; 70 71 /* 72 * Ignore rest of the string in order not to break on versions as 73 * 4.8.1-52-default. 74 */ 75 if (!parse_digit(str, v3)) 76 return 1; 77 78 return 0; 79 } 80 81 int tst_kvcmp(const char *cur_kver, int r1, int r2, int r3) 82 { 83 int a1, a2, a3; 84 int testver, currver; 85 86 if (tst_parse_kver(cur_kver, &a1, &a2, &a3)) { 87 tst_resm(TWARN, 88 "Invalid kernel version %s, expected %%d.%%d.%%d", 89 cur_kver); 90 } 91 92 testver = (r1 << 16) + (r2 << 8) + r3; 93 currver = (a1 << 16) + (a2 << 8) + a3; 94 95 return currver - testver; 96 } 97 98 int tst_kvercmp(int r1, int r2, int r3) 99 { 100 struct utsname uval; 101 102 uname(&uval); 103 104 return tst_kvcmp(uval.release, r1, r2, r3); 105 } 106 107 int tst_kvexcmp(const char *tst_exv, const char *cur_ver) 108 { 109 int c1 = 0, c2 = 0, c3 = 0, c4 = 0, c5 = 0; 110 int t1 = 0, t2 = 0, t3 = 0, t4 = 0, t5 = 0; 111 int ret; 112 113 sscanf(cur_ver, "%d.%d.%d-%d.%d", &c1, &c2, &c3, &c4, &c5); 114 sscanf(tst_exv, "%d.%d.%d-%d.%d", &t1, &t2, &t3, &t4, &t5); 115 116 if ((ret = c1 - t1)) 117 return ret; 118 if ((ret = c2 - t2)) 119 return ret; 120 if ((ret = c3 - t3)) 121 return ret; 122 if ((ret = c4 - t4)) 123 return ret; 124 125 return c5 - t5; 126 } 127 128 const char *tst_kvcmp_distname(const char *kver) 129 { 130 if (strstr(kver, ".el5uek")) 131 return "OL5UEK"; 132 133 if (strstr(kver, ".el5")) 134 return "RHEL5"; 135 136 if (strstr(kver, ".el6uek")) 137 return "OL6UEK"; 138 139 if (strstr(kver, ".el6")) 140 return "RHEL6"; 141 142 return NULL; 143 } 144 145 int tst_kvercmp2(int r1, int r2, int r3, struct tst_kern_exv *vers) 146 { 147 int i; 148 const char *kver; 149 struct utsname uval; 150 const char *cur_dist_name; 151 152 uname(&uval); 153 kver = uval.release; 154 cur_dist_name = tst_kvcmp_distname(kver); 155 156 if (cur_dist_name == NULL) 157 return tst_kvercmp(r1, r2, r3); 158 159 for (i = 0; vers[i].dist_name; i++) { 160 if (!strcmp(vers[i].dist_name, cur_dist_name)) { 161 tst_resm(TINFO, "Detected %s using kernel version %s", 162 cur_dist_name, kver); 163 return tst_kvexcmp(vers[i].extra_ver, kver); 164 } 165 } 166 167 return tst_kvcmp(kver, r1, r2, r3); 168 } 169
