125 lines
2.2 KiB
C
125 lines
2.2 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "fs.h"
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#include "util.h"
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static size_t maxdepth = SIZE_MAX;
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static size_t blksize = 512;
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static int aflag = 0;
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static int sflag = 0;
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static int hflag = 0;
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static int ret = 0;
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static void
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printpath(size_t n, const char *path)
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{
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if (hflag)
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printf("%s\t%s\n", humansize(n * blksize), path);
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else
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printf("%zu\t%s\n", n, path);
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}
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static size_t
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nblks(blkcnt_t blocks)
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{
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return (512 * blocks + blksize - 1) / blksize;
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}
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void
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du(const char *path, void *total, struct recursor *r)
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{
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struct stat st;
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size_t subtotal = 0;
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if (lstat(path, &st) < 0) {
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if (!(r->depth) || errno != ENOENT)
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weprintf("stat %s:", path);
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if (!(r->depth))
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ret = 1;
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return;
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}
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if (S_ISDIR(st.st_mode))
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recurse(path, &subtotal, r);
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*((size_t *)total) += subtotal + nblks(st.st_blocks);
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if (!sflag && r->depth <= maxdepth && (S_ISDIR(st.st_mode) || aflag))
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printpath(subtotal + nblks(st.st_blocks), path);
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}
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static void
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usage(void)
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{
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eprintf("usage: %s [-a | -s] [-d depth] [-h] [-k] [-H | -L | -P] [-x] [file ...]\n", argv0);
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}
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int
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main(int argc, char *argv[])
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{
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struct recursor r = { .fn = du, .hist = NULL, .depth = 0, .follow = 'P', .flags = 0};
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size_t n = 0;
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int kflag = 0, dflag = 0;
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char *bsize;
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ARGBEGIN {
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case 'a':
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aflag = 1;
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break;
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case 'd':
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dflag = 1;
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maxdepth = estrtonum(EARGF(usage()), 0, MIN(LLONG_MAX, SIZE_MAX));
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break;
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case 'h':
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hflag = 1;
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break;
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case 'k':
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kflag = 1;
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break;
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case 's':
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sflag = 1;
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break;
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case 'x':
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r.flags |= SAMEDEV;
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break;
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case 'H':
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case 'L':
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case 'P':
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r.follow = ARGC();
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break;
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default:
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usage();
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} ARGEND;
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if ((aflag && sflag) || (dflag && sflag))
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usage();
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bsize = getenv("BLOCKSIZE");
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if (bsize)
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blksize = estrtonum(bsize, 0, MIN(LLONG_MAX, SIZE_MAX));
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if (kflag)
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blksize = 1024;
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if (!argc) {
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du(".", &n, &r);
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if (sflag && !ret)
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printpath(nblks(n), ".");
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} else {
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for (; *argv; argc--, argv++) {
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du(argv[0], &n, &r);
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if (sflag && !ret)
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printpath(n, argv[0]);
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}
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}
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return ret || recurse_status;
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}
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