93 lines
2.1 KiB
C
93 lines
2.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <errno.h>
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#include <unistd.h>
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#include <mntent.h>
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#include <sys/statvfs.h>
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#include "human.h"
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#include "config.h"
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unsigned int a_flag;
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unsigned int h_flag;
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off_t block = 1024;
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void print_human(const char *src, const off_t total, const off_t used, const off_t avail, const off_t capacity, const char *dst) {
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char total_s[MU_HUMAN_BUF_SIZE + 1];
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char used_s[MU_HUMAN_BUF_SIZE + 1];
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char avail_s[MU_HUMAN_BUF_SIZE + 1];
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snprintf(total_s, sizeof(total_s), "%s", mu_humansize(total * block, block));
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snprintf(used_s, sizeof(used_s), "%s", mu_humansize(used * block, block));
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snprintf(avail_s, sizeof(avail_s), "%s", mu_humansize(avail * block, block));
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printf("%-20s %5s %5s %5s %7ju%% %s\n", src, total_s, used_s, avail_s, capacity, dst);
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}
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int main(int argc, char **argv) {
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int opt;
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while ((opt = getopt(argc, argv, "hHka")) != -1) {
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switch (opt) {
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case 'h':
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h_flag = 1;
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break;
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case 'H':
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h_flag = 1;
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block = 1000;
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break;
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case 'a':
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a_flag = 1;
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break;
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default:
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printf("df\n\t[-h Human readable (1024)] [-a Show all]\n\t[-H Human readable (1000)]\n");
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return 0;
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}
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}
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FILE *fp = setmntent("/proc/mounts", "r");
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if (fp == NULL) {
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fprintf(stderr, "df: %s\n", strerror(errno));
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return 1;
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}
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printf("[Filesystem] [Size] [Used] [Avail] [Capacity] [Mounted on]\n");
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int ret = 0;
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struct mntent *me;
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struct statvfs disk;
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while ((me = getmntent(fp)) != NULL) {
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if (!strcmp(me->mnt_fsname, "none"))
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continue;
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if (!a_flag)
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if (!strncmp(me->mnt_fsname, "fs", 2))
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continue;
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if (statvfs(me->mnt_dir, &disk) < 0) {
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ret = 1;
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continue;
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}
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off_t bs = disk.f_frsize / block;
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off_t total = disk.f_blocks * bs;
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off_t avail = disk.f_bfree * bs;
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off_t used = total - avail;
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off_t capacity = (used * 100) / (avail + used) + 1;
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if (h_flag)
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print_human(me->mnt_fsname, total, used, avail, capacity, me->mnt_dir);
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else
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printf("%-20s %7ju %7ju %7ju %7ju%% %s\n", me->mnt_fsname, total, used, avail, capacity, me->mnt_dir);
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}
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endmntent(fp);
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return ret;
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}
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