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cpugovctl: correctly evaluate available command line parameters

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When calling `cpugovctl set` then an access to the terminating NULL
pointer of argv is made.
This commit is contained in:
Matthias Gerstner 2018-07-30 16:43:58 +02:00
parent 39d7b95a26
commit 2896506340
1 changed files with 3 additions and 7 deletions
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10
daemon/cpugovctl.c
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@ -64,14 +64,9 @@ static void set_gov_state(const char *value)
*/ */
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
if (argc < 2) { if (argc == 2 && strncmp(argv[1], "get", 3) == 0) {
fprintf(stderr, "usage: cpugovctl [get] [set VALUE]\n");
return EXIT_FAILURE;
}
if (strncmp(argv[1], "get", 3) == 0) {
printf("%s", get_gov_state()); printf("%s", get_gov_state());
} else if (strncmp(argv[1], "set", 3) == 0) { } else if (argc == 3 && strncmp(argv[1], "set", 3) == 0) {
const char *value = argv[2]; const char *value = argv[2];
/* Must be root to set the state */ /* Must be root to set the state */
@ -82,6 +77,7 @@ int main(int argc, char *argv[])
set_gov_state(value); set_gov_state(value);
} else { } else {
fprintf(stderr, "usage: cpugovctl [get] [set VALUE]\n");
return EXIT_FAILURE; return EXIT_FAILURE;
} }