/* vi: set sw=4 ts=4: */ /* * Utility routines. * * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> * * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. */ #include "libbb.h" #undef DEBUG_RECURS_ACTION /* * Walk down all the directories under the specified * location, and do something (something specified * by the fileAction and dirAction function pointers). * * Unfortunately, while nftw(3) could replace this and reduce * code size a bit, nftw() wasn't supported before GNU libc 2.1, * and so isn't sufficiently portable to take over since glibc2.1 * is so stinking huge. */ int recursive_action(const char *fileName, int recurse, int followLinks, int depthFirst, int (*fileAction) (const char *fileName, struct stat * statbuf, void* userData), int (*dirAction) (const char *fileName, struct stat * statbuf, void* userData), void* userData) { int status; struct stat statbuf; struct dirent *next; if (followLinks) status = stat(fileName, &statbuf); else status = lstat(fileName, &statbuf); if (status < 0) { #ifdef DEBUG_RECURS_ACTION bb_error_msg("status=%d followLinks=%d TRUE=%d", status, followLinks, TRUE); #endif bb_perror_msg("%s", fileName); return FALSE; } if (! followLinks && (S_ISLNK(statbuf.st_mode))) { if (fileAction == NULL) return TRUE; else return fileAction(fileName, &statbuf, userData); } if (! recurse) { if (S_ISDIR(statbuf.st_mode)) { if (dirAction != NULL) return (dirAction(fileName, &statbuf, userData)); else return TRUE; } } if (S_ISDIR(statbuf.st_mode)) { DIR *dir; if (dirAction != NULL && ! depthFirst) { status = dirAction(fileName, &statbuf, userData); if (! status) { bb_perror_msg("%s", fileName); return FALSE; } else if (status == SKIP) return TRUE; } dir = opendir(fileName); if (!dir) { return FALSE; } status = TRUE; while ((next = readdir(dir)) != NULL) { char *nextFile; nextFile = concat_subpath_file(fileName, next->d_name); if(nextFile == NULL) continue; if (! recursive_action(nextFile, TRUE, followLinks, depthFirst, fileAction, dirAction, userData)) { status = FALSE; } free(nextFile); } closedir(dir); if (dirAction != NULL && depthFirst) { if (! dirAction(fileName, &statbuf, userData)) { bb_perror_msg("%s", fileName); return FALSE; } } if (! status) return FALSE; } else { if (fileAction == NULL) return TRUE; else return fileAction(fileName, &statbuf, userData); } return TRUE; }