1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-07-26 04:47:34 +00:00

Add a simple /bin/df which gathers its info from /proc/df.

This commit is contained in:
Andreas Kling 2019-02-21 14:48:00 +01:00
parent 7d288aafb2
commit 43075e5878
8 changed files with 119 additions and 0 deletions

55
Userland/df.cpp Normal file
View file

@ -0,0 +1,55 @@
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <stdlib.h>
#include <AK/AKString.h>
#include <AK/Vector.h>
struct FileSystem {
String fs;
size_t total_block_count { 0 };
size_t free_block_count { 0 };
size_t total_inode_count { 0 };
size_t free_inode_count { 0 };
String mount_point;
};
int main(int, char**)
{
FILE* fp = fopen("/proc/df", "r");
if (!fp) {
perror("failed to open /proc/df");
return 1;
}
printf("Filesystem Blocks Used Available Mount point\n");
for (;;) {
char buf[4096];
char* ptr = fgets(buf, sizeof(buf), fp);
if (!ptr)
break;
auto parts = String(buf, Chomp).split(',');
if (parts.size() < 6)
break;
bool ok;
String fs = parts[0];
unsigned total_block_count = parts[1].to_uint(ok);
ASSERT(ok);
unsigned free_block_count = parts[2].to_uint(ok);
ASSERT(ok);
unsigned total_inode_count = parts[3].to_uint(ok);
ASSERT(ok);
unsigned free_inode_count = parts[4].to_uint(ok);
ASSERT(ok);
String mount_point = parts[5];
printf("% 10s", fs.characters());
printf("%10u ", total_block_count);
printf("%10u ", total_block_count - free_block_count);
printf("%10u ", free_block_count);
printf("%s", mount_point.characters());
printf("\n");
}
int rc = fclose(fp);
ASSERT(rc == 0);
return 0;
}