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/* 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 <stdio.h>
#include <string.h>
#include <dirent.h>
#include <sys/stat.h>
#include <stdlib.h> /* free() */
#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 = bb_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;
}
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