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authorMike Frysinger2005-04-24 05:07:59 +0000
committerMike Frysinger2005-04-24 05:07:59 +0000
commitd89e629e52c3b525424be958de238ed1dc5a0361 (patch)
tree9aec1ca3d0a479bef39bd63c14f4292061d34675 /e2fsprogs/e2p/iod.c
parent408ae211ceaf33bf758207cd5329903c39e8880c (diff)
downloadbusybox-d89e629e52c3b525424be958de238ed1dc5a0361.zip
busybox-d89e629e52c3b525424be958de238ed1dc5a0361.tar.gz
add new subdir for e2fsprogs
Diffstat (limited to 'e2fsprogs/e2p/iod.c')
-rw-r--r--e2fsprogs/e2p/iod.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/e2fsprogs/e2p/iod.c b/e2fsprogs/e2p/iod.c
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+++ 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;
+}