/* See LICENSE file for copyright and license details. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <sys/stat.h> #include "util.h" static const char *getpwd(const char *cwd); static void usage(void) { eprintf("usage: %s [-LP]\n", argv0); } int main(int argc, char *argv[]) { char *cwd; char mode = 'L'; ARGBEGIN { case 'L': case 'P': mode = ARGC(); break; default: usage(); } ARGEND; cwd = agetcwd(); puts((mode == 'L') ? getpwd(cwd) : cwd); return 0; } const char * getpwd(const char *cwd) { const char *pwd; struct stat cst, pst; if(!(pwd = getenv("PWD")) || pwd[0] != '/' || stat(pwd, &pst) == -1) return cwd; if(stat(cwd, &cst) == -1) eprintf("stat %s:", cwd); if(pst.st_dev == cst.st_dev && pst.st_ino == cst.st_ino) return pwd; else return cwd; }