119 lines
2.5 KiB
C
119 lines
2.5 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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char a_flag;
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char h_flag;
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char *t_flag;
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off_t block = 1024;
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int print(const struct mntent *me) {
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struct statvfs disk;
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if (!strcmp(me->mnt_fsname, "none"))
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return 0;
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if (statvfs(me->mnt_dir, &disk) < 0)
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return 1;
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if (!a_flag)
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if (!strcmp(me->mnt_fsname, "/dev/root") || disk.f_blocks == 0)
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return 0;
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if (t_flag && strcmp(t_flag, me->mnt_type))
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return 0;
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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 + 1) / (avail + used + 1);
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if (h_flag) {
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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 %12s %10s %9s %9s %3jd%% %s\n", me->mnt_fsname, me->mnt_type, total_s, used_s, avail_s, capacity, me->mnt_dir);
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}
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else
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printf("%-20s %12s %12jd %12jd %12jd %12jd%% %s\n", me->mnt_fsname, me->mnt_type, total, used, avail, capacity, me->mnt_dir);
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return 0;
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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, "hHat:")) != -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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case 't':
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t_flag = optarg;
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break;
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default:
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puts("df [hHat]\n\t-h Human readable (1024)\n\t-a Show all\n\t-H Human readable (1000)\n\t-t TYPE Print only mounts of this type");
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return 0;
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}
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}
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argv += optind;
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argc -= optind;
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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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if (h_flag)
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puts("Filesystem Type Size Used Available Use% Mounted on");
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else
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puts("Filesystem Type Size Used Available Use% Mounted on");
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int ret = 0;
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struct mntent *me;
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while ((me = getmntent(fp)) != NULL) {
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if (argc) {
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for (int i = 0; i < argc; i++) {
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if (!strcmp(argv[i], me->mnt_fsname) || !strcmp(argv[i], me->mnt_dir))
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if (print(me))
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ret = 1;
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}
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}
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else
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print(me);
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}
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endmntent(fp);
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return ret;
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}
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