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#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/un.h>
#include "cpufreqd_remote.h"
static int cpufreqd_dirs(const struct dirent *d) {
return (strncmp(d->d_name, "cpufreqd-", 9) == 0);
}
int main(int argc, char *argv[])
{
int sock;
struct dirent **namelist = NULL;
struct sockaddr_un sck;
struct stat st;
time_t last_mtime = 0;
unsigned int cmd = 0;
unsigned int full_cmd = 0;
unsigned int i = 0;
char buf[4096] = {0}, name[256] = {0}, policy[255] = {0};
char *in;
int min, max, active, n;
if (argc == 2 && !strcmp(argv[1], "-l"))
cmd = CMD_CUR_PROFILES;
else if (argc == 1)
cmd = CMD_LIST_PROFILES;
else {
fprintf(stdout, "%s: Wrong arguments\n", argv[0]);
fprintf(stdout, "%s [-l]\n", argv[0]);
fprintf(stdout, " -l list applied profiles\n");
return 1;
}
sck.sun_family = AF_UNIX;
sck.sun_path[0] = '\0';
/* get path */
n = scandir("/tmp", &namelist, &cpufreqd_dirs, NULL);
if (n > 0) {
while (n--) {
snprintf(buf, 108, "/tmp/%s", namelist[n]->d_name);
free(namelist[n]);
if (stat(buf, &st) != 0) {
fprintf(stderr, "%s: %s\n", buf, strerror(errno));
continue;
}
#if 0
fprintf(stdout, "%s %lu %lu %lu\n", buf, st.st_ctime, st.st_atime, st.st_mtime);
#endif
if (last_mtime == 0 || last_mtime < st.st_mtime) {
last_mtime = st.st_mtime;
snprintf(sck.sun_path, 108,"%s/cpufreqd", buf);
#if 0
fprintf(stdout, "--> %s\n", buf);
#endif
}
}
free(namelist);
} else {
fprintf(stderr, "No cpufreqd socket found\n");
return ENOENT;
}
if (!sck.sun_path) {
fprintf(stderr, "No cpufreqd socket found\n");
return ENOENT;
}
#if 0
fprintf(stdout, "socket I'll try to connect: %s\n", sck.sun_path);
#endif
if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) == -1) {
perror("socket()");
return 1;
}
if (connect(sock, (struct sockaddr *)&sck, sizeof(sck)) == -1) {
perror("connect()");
return 1;
}
full_cmd = MAKE_COMMAND(cmd, 0);
if (write(sock, &full_cmd, 4) != 4)
perror("write()");
n = 0;
while (read(sock, buf, 4096)) {
int is_active = 0;
in = buf;
while (cmd == CMD_LIST_PROFILES
&& sscanf(in, "%d/%[^/]/%d/%d/%[^\n]\n", &active, name, &min, &max, policy) == 5) {
printf("\nName (#%d):\t%s\n", ++n, name);
/* pretty print active cpus */
is_active = 0;
for (i = 0; i < sizeof(active); i++) {
if (active & (1 << i)) {
if (is_active == 0)
printf("Active on CPU#:\t");
else if (is_active > 0)
printf(", ");
printf("%d", i);
is_active++;
}
}
if (is_active)
printf("\n");
printf("Governor:\t%s\n", policy);
printf("Min freq:\t%d\n", min);
printf("Max freq:\t%d\n", max);
in = strchr(in, '\n') + 1;
}
while (cmd == CMD_CUR_PROFILES
&& sscanf(in, "%d/%[^/]/%d/%d/%[^\n]\n", &active, name, &min, &max, policy) == 5) {
printf("\nCPU#%d: \"%s\" ", active, name);
printf("%s %d-%d\n", policy, min, max);
in = strchr(in, '\n') + 1;
}
}
close(sock);
return 0;
}
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