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cpugovctl: evaluate govenor write errors and adjust exit code accordingly

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This commit is contained in:
Matthias Gerstner 2018-07-30 17:17:51 +02:00
parent 2896506340
commit 5f06435bdf
1 changed files with 12 additions and 3 deletions
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15
daemon/cpugovctl.c
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@ -35,15 +35,18 @@ POSSIBILITY OF SUCH DAMAGE.
#include "logging.h" #include "logging.h"
#include <ctype.h> #include <ctype.h>
#include <errno.h>
#include <sys/types.h> #include <sys/types.h>
/** /**
* Sets all governors to a value * Sets all governors to a value
*/ */
static void set_gov_state(const char *value) static int set_gov_state(const char *value)
{ {
char governors[MAX_GOVERNORS][MAX_GOVERNOR_LENGTH] = { { 0 } }; char governors[MAX_GOVERNORS][MAX_GOVERNOR_LENGTH] = { { 0 } };
int num = fetch_governors(governors); int num = fetch_governors(governors);
int retval = EXIT_SUCCESS;
int res = 0;
LOG_MSG("Setting governors to %s\n", value); LOG_MSG("Setting governors to %s\n", value);
for (int i = 0; i < num; i++) { for (int i = 0; i < num; i++) {
@ -54,9 +57,15 @@ static void set_gov_state(const char *value)
continue; continue;
} }
fprintf(f, "%s\n", value); res = fprintf(f, "%s\n", value);
if (res < 0) {
LOG_ERROR("Failed to set governor %s to %s: %s", gov, value, strerror(errno));
retval = EXIT_FAILURE;
}
fclose(f); fclose(f);
} }
return retval;
} }
/** /**
@ -75,7 +84,7 @@ int main(int argc, char *argv[])
return EXIT_FAILURE; return EXIT_FAILURE;
} }
set_gov_state(value); return set_gov_state(value);
} else { } else {
fprintf(stderr, "usage: cpugovctl [get] [set VALUE]\n"); fprintf(stderr, "usage: cpugovctl [get] [set VALUE]\n");
return EXIT_FAILURE; return EXIT_FAILURE;