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Add tst_kvcmp inspired by the shell test syntax. Now we can write the kernel version checks as: if tst_kvcmp -ge 3.8.0 -a -le 4.3.2; then tst_brk TCONF "Needs kernel older than 3.8.0 or newer than 4.3.2" fi Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -2,3 +2,4 @@ tst_sleep | |
| tst_random | ||
| tst_checkpoint | ||
| tst_rod | ||
| tst_kvcmp | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,191 @@ | ||
| /* | ||
| * Copyright (c) 2016 Cyril Hrubis <chrubis@suse.cz> | ||
| * | ||
| * This program 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 program is distributed in the hope that it would 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 the Free Software Foundation, | ||
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | ||
| */ | ||
|
|
||
| #define TST_NO_DEFAULT_MAIN | ||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <tst_test.h> | ||
|
|
||
| enum op { | ||
| EQ, | ||
| NE, | ||
| GE, | ||
| GT, | ||
| LE, | ||
| LT, | ||
| AND, | ||
| OR, | ||
| ERR, | ||
| }; | ||
|
|
||
| static enum op strtop(const char *op) | ||
| { | ||
| if (!strcmp(op, "-eq")) | ||
| return EQ; | ||
|
|
||
| if (!strcmp(op, "-ne")) | ||
| return NE; | ||
|
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||
| if (!strcmp(op, "-ge")) | ||
| return GE; | ||
|
|
||
| if (!strcmp(op, "-gt")) | ||
| return GT; | ||
|
|
||
| if (!strcmp(op, "-le")) | ||
| return LE; | ||
|
|
||
| if (!strcmp(op, "-lt")) | ||
| return LT; | ||
|
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||
| if (!strcmp(op, "-a")) | ||
| return AND; | ||
|
|
||
| if (!strcmp(op, "-o")) | ||
| return OR; | ||
|
|
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| return ERR; | ||
| } | ||
|
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||
| static void help(const char *fname) | ||
| { | ||
| printf("usage: %s -eq|-ne|-gt|-ge|-lt|-le kver [-a|-o] ...\n\n", fname); | ||
| printf("-eq kver\tReturns true if kernel version is equal\n"); | ||
| printf("-ne kver\tReturns true if kernel version is not equal\n"); | ||
| printf("-gt kver\tReturns true if kernel version is greater\n"); | ||
| printf("-ge kver\tReturns true if kernel version is greater or equal\n"); | ||
| printf("-lt kver\tReturns true if kernel version is lesser\n"); | ||
| printf("-le kver\tReturns true if kernel version is lesser or equal\n"); | ||
| printf("-a \t\tDoes logical and between two expressions\n"); | ||
| printf("-o \t\tDoes logical or between two expressions\n\n"); | ||
| printf("Kernel version format has either one or two dots: "); | ||
| printf("'2.6' or '4.8.1'\n"); | ||
| } | ||
|
|
||
| int main(int argc, char *argv[]) | ||
| { | ||
| int i = 1; | ||
| int ret = -1; | ||
| int v1, v2, v3; | ||
| enum op prev_op = ERR; | ||
|
|
||
| if (argc <= 1 || !strcmp(argv[1], "-h")) { | ||
| help(argv[0]); | ||
| return 0; | ||
| } | ||
|
|
||
| while (i < argc) { | ||
| const char *strop = argv[i++]; | ||
| const char *strkver; | ||
| int res; | ||
|
|
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| enum op op = strtop(strop); | ||
|
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||
| switch (op) { | ||
| case EQ: | ||
| case NE: | ||
| case GE: | ||
| case GT: | ||
| case LE: | ||
| case LT: | ||
| if (ret != -1 && prev_op == ERR) { | ||
| fprintf(stderr, "Expected -a or -o\n"); | ||
| return 2; | ||
| } | ||
|
|
||
| if (i >= argc) { | ||
| fprintf(stderr, | ||
| "Expected kernel version after '%s'\n", | ||
| strop); | ||
| return 2; | ||
| } | ||
|
|
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| strkver = argv[i++]; | ||
|
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| if (tst_parse_kver(strkver, &v1, &v2, &v3)) { | ||
| fprintf(stderr, | ||
| "Invalid kernel version '%s'\n", | ||
| strkver); | ||
| return 2; | ||
| } | ||
| break; | ||
| case AND: | ||
| case OR: | ||
| if (ret == -1) { | ||
| fprintf(stderr, | ||
| "The %s must follow expression\n", | ||
| strop); | ||
| return 2; | ||
| } | ||
| prev_op = op; | ||
| continue; | ||
| break; | ||
| case ERR: | ||
| fprintf(stderr, "Invalid operation %s\n", argv[i]); | ||
| return 2; | ||
| } | ||
|
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| res = tst_kvercmp(v1, v2, v3); | ||
|
|
||
| switch (op) { | ||
| case EQ: | ||
| res = (res == 0); | ||
| break; | ||
| case NE: | ||
| res = (res != 0); | ||
| break; | ||
| case GE: | ||
| res = (res >= 0); | ||
| break; | ||
| case GT: | ||
| res = (res > 0); | ||
| break; | ||
| case LE: | ||
| res = (res <= 0); | ||
| break; | ||
| case LT: | ||
| res = (res < 0); | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
|
|
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| switch (prev_op) { | ||
| case ERR: | ||
| ret = res; | ||
| break; | ||
| case AND: | ||
| ret = ret && res; | ||
| prev_op = ERR; | ||
| break; | ||
| case OR: | ||
| ret = ret || res; | ||
| prev_op = ERR; | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
| } | ||
|
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| if (prev_op != ERR) { | ||
| fprintf(stderr, "Useless -a or -o at the end\n"); | ||
| return 2; | ||
| } | ||
|
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| return !ret; | ||
| } |