161 lines
4.1 KiB
C
161 lines
4.1 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) tons of folks. Tracking down who wrote what
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* isn't something I'm going to worry about... If you wrote something
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* here, please feel free to acknowledge your work.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Based in part on code from sash, Copyright (c) 1999 by David I. Bell
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* Permission has been granted to redistribute this code under the GPL.
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*
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*/
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#include <stdio.h>
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#include <dirent.h>
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#include <sys/stat.h>
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#include "libbb.h"
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/* same conditions as recursive_action */
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#define bb_need_name_too_long
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#define BB_DECLARE_EXTERN
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#include "../messages.c"
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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,
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struct stat * statbuf,
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void* userData),
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int (*dirAction) (const char *fileName,
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struct stat * statbuf,
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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 == TRUE)
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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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fprintf(stderr,
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"status=%d followLinks=%d TRUE=%d\n",
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status, followLinks, TRUE);
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#endif
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perror_msg("%s", fileName);
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return FALSE;
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}
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if ((followLinks == FALSE) && (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 == FALSE) {
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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 == FALSE) {
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status = dirAction(fileName, &statbuf, userData);
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if (status == FALSE) {
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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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perror_msg("%s", fileName);
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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[PATH_MAX];
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if ((strcmp(next->d_name, "..") == 0)
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|| (strcmp(next->d_name, ".") == 0)) {
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continue;
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}
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if (strlen(fileName) + strlen(next->d_name) + 1 > PATH_MAX) {
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error_msg(name_too_long);
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return FALSE;
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}
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memset(nextFile, 0, sizeof(nextFile));
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if (fileName[strlen(fileName)-1] == '/')
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sprintf(nextFile, "%s%s", fileName, next->d_name);
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else
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sprintf(nextFile, "%s/%s", fileName, next->d_name);
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if (recursive_action(nextFile, TRUE, followLinks, depthFirst,
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fileAction, dirAction, userData) == FALSE) {
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status = FALSE;
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}
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}
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closedir(dir);
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if (dirAction != NULL && depthFirst == TRUE) {
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if (dirAction(fileName, &statbuf, userData) == FALSE) {
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perror_msg("%s", fileName);
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return FALSE;
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}
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}
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if (status == FALSE)
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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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/* END CODE */
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/*
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Local Variables:
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c-file-style: "linux"
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c-basic-offset: 4
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tab-width: 4
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End:
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*/
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