/* vi: set sw=4 ts=4: */ /* * which.c - * * Copyright 2006 Rob landley <rob@landley.net> */ #include "toys.h" #define OPT_a 1 // Find an exectuable file either at a path with a slash in it (absolute or // relative to current directory), or in $PATH. Returns absolute path to file, // or NULL if not found. static int which_in_path(char *filename) { struct string_list *list; // If they gave us a path, don't worry about $PATH or -a if (index(filename, '/')) { // Confirm it has the executable bit set, and it's not a directory. if (!access(filename, X_OK)) { struct stat st; if (!stat(filename, &st) && S_ISREG(st.st_mode)) { puts(filename); return 0; } return 1; } } // Search $PATH for matches. list = find_in_path(getenv("PATH"), filename); if (!list) return 1; // Print out matches while (list) { if (!access(list->str, X_OK)) { puts(list->str); // If we should stop at one match, do so if (toys.optflags & OPT_a) { llist_free(list, NULL); break; } } free(llist_pop(&list)); } return 0; } int which_main(void) { int rc = 0; if (!*toys.optargs) rc++; else { int i; for (i=0; toys.optargs[i]; i++) rc |= which_in_path(toys.optargs[i]); } // if (CFG_TOYBOX_FREE) free(argv); return rc; }