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add ram and disk getters

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This commit is contained in:
Drath Vader
2026-05-09 22:36:21 +02:00
parent 110c012587
commit 4be515392d
2 changed files with 45 additions and 0 deletions
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18
include/sys.h
View File

@@ -1,12 +1,30 @@
#ifndef LINUXSMARTIE_SYS_H #ifndef LINUXSMARTIE_SYS_H
#define LINUXSMARTIE_SYS_H #define LINUXSMARTIE_SYS_H
#include <stdint.h>
struct time_date_t { struct time_date_t {
char date[12]; char date[12];
char time[9]; char time[9];
}; };
struct memory_t {
uint64_t free;
uint64_t used;
uint64_t total;
};
struct disk_t {
struct memory_t usage;
char mountpoint[256];
};
void sys_get_time(struct time_date_t *td); void sys_get_time(struct time_date_t *td);
void sys_get_load_avg(double *load_avg); void sys_get_load_avg(double *load_avg);
void sys_get_ram(struct memory_t *ram);
void sys_get_disk(struct disk_t* disk);
#endif //LINUXSMARTIE_SYS_H #endif //LINUXSMARTIE_SYS_H

27
src/sys.c
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@@ -2,7 +2,9 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h>
#include <time.h> #include <time.h>
#include <sys/statvfs.h>
void sys_get_time(struct time_date_t *td) { void sys_get_time(struct time_date_t *td) {
constexpr char months[][4] = {"sty", "lut", "mar", "kwi", "maj", "cze", "lip", "sie", "wrz", "paz", "lis", "gru"}; constexpr char months[][4] = {"sty", "lut", "mar", "kwi", "maj", "cze", "lip", "sie", "wrz", "paz", "lis", "gru"};
@@ -16,3 +18,28 @@ void sys_get_time(struct time_date_t *td) {
void sys_get_load_avg(double *load_avg) { void sys_get_load_avg(double *load_avg) {
getloadavg(load_avg, 3); getloadavg(load_avg, 3);
} }
void sys_get_ram(struct memory_t *ram) {
char buf[64];
memset(ram, 0, sizeof(struct memory_t)); // zero out all values so we dont break out of the loop early
FILE *f = fopen("/proc/meminfo", "r");
if (f == nullptr)
return;
while (fgets(buf, sizeof(buf), f)) {
sscanf(buf, "MemTotal: %lu kB", &ram->total); // NOLINT we live dangerously
sscanf(buf, "MemAvailable: %lu kB", &ram->free); // NOLINT (its not really that dangerous)
if (ram->total && ram->free) break;
}
fclose(f);
ram->used = ram->total - ram->free;
}
void sys_get_disk(struct disk_t* disk) {
struct statvfs diskData;
statvfs(disk->mountpoint, &diskData);
disk->usage.free = diskData.f_bfree * diskData.f_frsize;
disk->usage.used = (diskData.f_blocks - diskData.f_bfree) * diskData.f_frsize;
disk->usage.total = diskData.f_blocks * diskData.f_frsize;
}