55 lines
846 B
C
55 lines
846 B
C
/* See LICENSE file for copyright and license details. */
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s [-fn] path\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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char buf[PATH_MAX];
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ssize_t n;
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int nflag = 0, fflag = 0;
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ARGBEGIN {
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case 'f':
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fflag = ARGC();
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break;
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case 'n':
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nflag = 1;
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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 (argc != 1)
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usage();
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if (strlen(argv[0]) >= PATH_MAX)
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eprintf("path too long\n");
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if (fflag) {
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if (!realpath(argv[0], buf))
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eprintf("realpath %s:", argv[0]);
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} else {
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if ((n = readlink(argv[0], buf, PATH_MAX - 1)) < 0)
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eprintf("readlink %s:", argv[0]);
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buf[n] = '\0';
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}
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fputs(buf, stdout);
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if (!nflag)
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putchar('\n');
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return fshut(stdout, "<stdout>");
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}
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