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