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