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Implement an ATA driver, Add vfsmount/vfsunmount syscalls

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This commit is contained in:
Kamil Kowalczyk
2025-10-14 00:39:59 +02:00
parent cb9e15330e
commit 25cb309105
19 changed files with 455 additions and 58 deletions
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33
kernel/util/util.c
View File

@ -1,3 +1,6 @@
#include <stdint.h>
#include <stddef.h>
#include "kprintf.h"
#include "util.h"
char *util_get_filename(char *path) {
@ -13,3 +16,33 @@ char *util_get_filename(char *path) {
return lastslash;
}
const char *human_size(uint64_t bytes, char *buf, size_t bufsize) {
static const char *units[] = { "B", "KiB", "MiB", "GiB", "TiB", "PiB" };
int unit = 0;
// Scale down until value fits nicely
uint64_t rem = 0;
while (bytes >= 1024 && unit < (int)(sizeof(units)/sizeof(units[0])) - 1) {
rem = bytes % 1024;
bytes /= 1024;
unit++;
}
if (unit == 0) {
// Just bytes
ksnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
} else {
// Show one decimal place without using floats
// Multiply remainder by 10 to get first decimal digit
uint64_t frac = (rem * 10 + 512) / 1024; // rounded
if (frac == 10) { // handle carry, e.g. 1023.9 -> 1024.0
bytes++;
frac = 0;
}
if (frac > 0) ksnprintf(buf, bufsize, "%llu.%llu %s", (unsigned long long)bytes, (unsigned long long)frac, units[unit]);
else ksnprintf(buf, bufsize, "%llu %s", (unsigned long long)bytes, units[unit]);
}
return buf;
}

4
kernel/util/util.h
View File

@ -1,6 +1,9 @@
#ifndef UTIL_UTIL_H_
#define UTIL_UTIL_H_
#include <stdint.h>
#include <stddef.h>
#define _DIV_ROUNDUP(num, div) ((num + div - 1) / div)
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
@ -74,5 +77,6 @@
var = tmp, tmp = (var ? var->next : NULL), (idx)++)
char *util_get_filename(char *path);
const char *human_size(uint64_t bytes, char *buf, size_t bufsize);
#endif // UTIL_UTIL_H_