53 lines
829 B
C
53 lines
829 B
C
/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include "util.h"
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static const char *getpwd(const char *cwd);
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static void
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usage(void)
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{
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eprintf("usage: %s [-LP]\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 *cwd;
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char mode = 'L';
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ARGBEGIN {
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case 'L':
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case 'P':
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mode = 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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cwd = agetcwd();
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puts((mode == 'L') ? getpwd(cwd) : cwd);
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return 0;
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}
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static const char *
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getpwd(const char *cwd)
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{
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const char *pwd;
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struct stat cst, pst;
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if (!(pwd = getenv("PWD")) || pwd[0] != '/' || stat(pwd, &pst) == -1)
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return cwd;
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if (stat(cwd, &cst) == -1)
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eprintf("stat %s:", cwd);
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if (pst.st_dev == cst.st_dev && pst.st_ino == cst.st_ino)
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return pwd;
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else
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return cwd;
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}
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