Created
September 22, 2020 23:39
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#include <stdio.h> /* fputs, printf, puts, stderr */ | |
#include <stdlib.h> /* EXIT_FAILURE, EXIT_SUCCESS, exit */ | |
#include <sys/resource.h> /* RLIM_INFINITY, RLIMIT_RTPRIO, getrlimit, setrlimit, struct rlimit */ | |
#include <unistd.h> /* pause */ | |
int main(void) { | |
struct rlimit rtprio; | |
if (getrlimit(RLIMIT_RTPRIO, &rtprio)) { | |
fputs("failed to get cur/soft rtprio\n", stderr); | |
exit(EXIT_FAILURE); | |
} | |
printf("cur: %lu\nmax: %lu\n", rtprio.rlim_cur, rtprio.rlim_max); | |
if (rtprio.rlim_cur == RLIM_INFINITY) { | |
puts("cur/soft is already unlimited"); | |
return EXIT_SUCCESS; | |
} | |
if (rtprio.rlim_max != RLIM_INFINITY) { | |
fputs( | |
"please add \"* hard rtprio unlimited\" to /etc/security/limits.conf\n", | |
stderr); | |
exit(EXIT_FAILURE); | |
} | |
rtprio.rlim_cur = RLIM_INFINITY; | |
if (setrlimit(RLIMIT_RTPRIO, &rtprio)) { | |
fputs("failed to set cur/soft rtprio to unlimited\n", stderr); | |
exit(EXIT_FAILURE); | |
} | |
puts("raised cur/soft rtprio successfully"); | |
pause(); | |
return EXIT_SUCCESS; | |
} |
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