mirror of
https://git.busybox.net/busybox.git
synced 2024-11-30 17:13:32 +08:00
110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/* 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;
|
|
}
|