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Attribute the contributions made by members of the community, but avoid unweildy and inconsistent copyright notices at the top of each file. Existing contributor copyright notices have been left as-is.
92 lines
2.8 KiB
C
92 lines
2.8 KiB
C
/*
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Copyright (c) 2017-2025, Feral Interactive and the GameMode contributors
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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* Neither the name of Feral Interactive nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#define _GNU_SOURCE
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#include "common-governors.h"
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#include "common-logging.h"
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#include <unistd.h>
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/**
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* Sets all governors to a value
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*/
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static int set_gov_state(const char *value)
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{
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char governors[MAX_GOVERNORS][MAX_GOVERNOR_LENGTH] = { { 0 } };
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int num = fetch_governors(governors);
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int retval = EXIT_SUCCESS;
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int res = 0;
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for (int i = 0; i < num; i++) {
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const char *gov = governors[i];
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FILE *f = fopen(gov, "w");
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if (!f) {
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LOG_ERROR("Failed to open file for write %s\n", gov);
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continue;
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}
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res = fprintf(f, "%s\n", value);
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if (res < 0) {
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LOG_ERROR("Failed to set governor %s to %s: %s", gov, value, strerror(errno));
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retval = EXIT_FAILURE;
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}
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fclose(f);
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}
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return retval;
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}
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/**
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* Main entry point, dispatch to the appropriate helper
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*/
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int main(int argc, char *argv[])
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{
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if (argc == 2 && strncmp(argv[1], "get", 3) == 0) {
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printf("%s", get_gov_state());
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} else if (argc == 3 && strncmp(argv[1], "set", 3) == 0) {
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const char *value = argv[2];
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/* Must be root to set the state */
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if (geteuid() != 0) {
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LOG_ERROR("This program must be run as root\n");
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return EXIT_FAILURE;
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}
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return set_gov_state(value);
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} else {
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fprintf(stderr, "usage: cpugovctl [get] [set VALUE]\n");
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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