71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
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/* retoor <retoor@molodetz.nl> */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/utsname.h>
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#include "system.h"
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int system_info_init(SystemInfo *info) {
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if (!info) return -1;
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memset(info, 0, sizeof(SystemInfo));
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return system_info_update(info);
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}
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int system_info_update(SystemInfo *info) {
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if (!info) return -1;
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struct utsname uts;
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if (uname(&uts) == 0) {
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strncpy(info->hostname, uts.nodename, MAX_HOSTNAME_LEN - 1);
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info->hostname[MAX_HOSTNAME_LEN - 1] = '\0';
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strncpy(info->kernel, uts.release, MAX_KERNEL_LEN - 1);
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info->kernel[MAX_KERNEL_LEN - 1] = '\0';
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strncpy(info->arch, uts.machine, MAX_ARCH_LEN - 1);
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info->arch[MAX_ARCH_LEN - 1] = '\0';
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}
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FILE *fp = fopen("/etc/os-release", "r");
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if (fp) {
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char line[512];
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while (fgets(line, sizeof(line), fp)) {
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if (strncmp(line, "PRETTY_NAME=", 12) == 0) {
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char *start = strchr(line, '"');
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if (start) {
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start++;
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char *end = strchr(start, '"');
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if (end) {
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*end = '\0';
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strncpy(info->os_name, start, MAX_OS_LEN - 1);
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info->os_name[MAX_OS_LEN - 1] = '\0';
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}
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}
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break;
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}
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}
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fclose(fp);
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}
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fp = fopen("/proc/uptime", "r");
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if (fp) {
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double uptime;
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if (fscanf(fp, "%lf", &uptime) == 1) {
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info->uptime_seconds = (long)uptime;
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info->uptime_days = info->uptime_seconds / 86400;
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info->uptime_hours = (info->uptime_seconds % 86400) / 3600;
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info->uptime_minutes = (info->uptime_seconds % 3600) / 60;
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}
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fclose(fp);
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}
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fp = fopen("/proc/loadavg", "r");
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if (fp) {
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if (fscanf(fp, "%lf %lf %lf", &info->load_1, &info->load_5, &info->load_15) != 3) {
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info->load_1 = info->load_5 = info->load_15 = 0.0;
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}
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fclose(fp);
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}
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return 0;
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}
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