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authorJohn Beppu1999-12-09 18:23:54 +0000
committerJohn Beppu1999-12-09 18:23:54 +0000
commit0f5e1ab949193ee7b6228bc66730da9d573464eb (patch)
tree10e4f7602ba51714d7a85c9afbc65075aebd1cac /coreutils/du.c
parentf0758dd6ba19f6039b6fed7da4ca2844b8c1032d (diff)
downloadbusybox-0f5e1ab949193ee7b6228bc66730da9d573464eb.zip
busybox-0f5e1ab949193ee7b6228bc66730da9d573464eb.tar.gz
This is my preliminary
du implementation. It was written from scratch (doesn't use recursiveAction). I still need to flesh out du_main().
Diffstat (limited to 'coreutils/du.c')
-rw-r--r--coreutils/du.c83
1 files changed, 83 insertions, 0 deletions
diff --git a/coreutils/du.c b/coreutils/du.c
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+/*
+ * Mini du implementation for busybox
+ *
+ *
+ * Copyright (C) 1999 by Lineo, inc.
+ * Written by John Beppu <beppu@line.com>
+ *
+ * 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
+ *
+ */
+
+#include "internal.h"
+#include <sys/types.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <stdio.h>
+/*
+#include <unistd.h>
+#include <sys/stat.h>
+*/
+
+
+typedef void (Display)(size_t, char *);
+
+static void
+print(size_t size, char *filename)
+{
+ fprintf(stdout, "%-7d %s\n", (size >> 1), filename);
+}
+
+/* tiny recursive du */
+static size_t
+size(char *filename)
+{
+ struct stat statbuf;
+ size_t sum;
+
+ if ((lstat(filename, &statbuf)) != 0) { return 0; }
+ sum = statbuf.st_blocks;
+
+ if (S_ISDIR(statbuf.st_mode)) {
+ DIR *dir;
+ struct dirent *entry;
+
+ dir = opendir(filename);
+ if (!dir) { return 0; }
+ while ((entry = readdir(dir))) {
+ char newfile[512];
+ char *name = entry->d_name;
+
+ if ( (strcmp(name, "..") == 0)
+ || (strcmp(name, ".") == 0))
+ { continue; }
+
+ sprintf(newfile, "%s/%s", filename, name);
+ sum += size(newfile);
+ }
+ closedir(dir);
+ print(sum, filename);
+ }
+ return sum;
+}
+
+int
+du_main(int argc, char **argv)
+{
+ /* I'll fill main() in shortly */
+ size(".");
+ exit(0);
+}
+