60 lines
900 B
C
60 lines
900 B
C
/* See LICENSE file for copyright and license details. */
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#include <unistd.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdbool.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 "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 [-efmn] 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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char buf[PATH_MAX];
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bool nflag = false;
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bool fflag = false;
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ssize_t n;
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ARGBEGIN {
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case 'e':
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case 'm':
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eprintf("not implemented\n");
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case 'f':
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fflag = true;
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break;
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case 'n':
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nflag = true;
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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 - 1)
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return EXIT_FAILURE;
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if (fflag) {
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if (realpath(argv[0], buf) == NULL)
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exit(1);
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} else {
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if ((n = readlink(argv[0], buf, sizeof(buf) - 1)) < 0)
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exit(1);
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buf[n] = '\0';
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}
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printf("%s", buf);
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if (!nflag)
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putchar('\n');
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return EXIT_SUCCESS;
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}
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