1 files changed, 72 insertions, 0 deletions

diff --git a/e2fsprogs/e2p/iod.c b/e2fsprogs/e2p/iod.c
new file mode 100644
index 000000000..808d3a39d
--- /dev/null
+++ b/e2fsprogs/e2p/iod.c
@@ -0,0 +1,72 @@
+/*
+ * iod.c                - Iterate a function on each entry of a directory
+ *
+ * Copyright (C) 1993, 1994  Remy Card <card@masi.ibp.fr>
+ *                           Laboratoire MASI, Institut Blaise Pascal
+ *                           Universite Pierre et Marie Curie (Paris VI)
+ *
+ * This file can be redistributed under the terms of the GNU Library General
+ * Public License
+ */
+
+/*
+ * History:
+ * 93/10/30     - Creation
+ */
+
+#include "e2p.h"
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <stdlib.h>
+#include <string.h>
+
+int iterate_on_dir (const char * dir_name,
+                    int (*func) (const char *, struct dirent *, void *),
+                    void * private)
+{
+        DIR * dir;
+        struct dirent *de, *dep;
+        int     max_len = -1, len;
+
+#if HAVE_PATHCONF && defined(_PC_NAME_MAX) 
+        max_len = pathconf(dir_name, _PC_NAME_MAX);
+#endif
+        if (max_len == -1) {
+#ifdef _POSIX_NAME_MAX
+                max_len = _POSIX_NAME_MAX;
+#else
+#ifdef NAME_MAX
+                max_len = NAME_MAX;
+#else
+                max_len = 256;
+#endif /* NAME_MAX */
+#endif /* _POSIX_NAME_MAX */
+        }
+        max_len += sizeof(struct dirent);
+
+        de = malloc(max_len+1);
+        if (!de)
+                return -1;
+        memset(de, 0, max_len+1);
+
+        dir = opendir (dir_name);
+        if (dir == NULL) {
+                free(de);
+                return -1;
+        }
+        while ((dep = readdir (dir))) {
+                len = sizeof(struct dirent);
+#ifdef HAVE_RECLEN_DIRENT
+                if (len < dep->d_reclen)
+                        len = dep->d_reclen;
+                if (len > max_len)
+                        len = max_len;
+#endif
+                memcpy(de, dep, len);
+                (*func) (dir_name, de, private);
+        }
+        free(de);
+        closedir(dir);
+        return 0;
+}