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authorEric Andersen2001-03-16 22:47:14 +0000
committerEric Andersen2001-03-16 22:47:14 +0000
commitaad1a88c76f208d188fd061e3723bd637437e8d5 (patch)
tree75ac2b994f7f04af776e93eeedba82b873ff557e /libbb/recursive_action.c
parentdfba13d199bb58d802df99c1ef20fdc0d628e86d (diff)
downloadbusybox-aad1a88c76f208d188fd061e3723bd637437e8d5.zip
busybox-aad1a88c76f208d188fd061e3723bd637437e8d5.tar.gz
Convert utility.c into libbb.a. It is now a whole pile of .c
files. Clean up the resulting damage and fix up the makefile. -Erik
Diffstat (limited to 'libbb/recursive_action.c')
-rw-r--r--libbb/recursive_action.c160
1 files changed, 160 insertions, 0 deletions
diff --git a/libbb/recursive_action.c b/libbb/recursive_action.c
new file mode 100644
index 0000000..6b93340
--- /dev/null
+++ b/libbb/recursive_action.c
@@ -0,0 +1,160 @@
+/* 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:
+*/