Correcting tag name to be like previous ones1_3_0

1 files changed, 44 insertions, 0 deletions

diff --git a/libbb/xgetcwd.c b/libbb/xgetcwd.c
new file mode 100644
index 0000000..0ac450d
--- /dev/null
+++ b/libbb/xgetcwd.c
@@ -0,0 +1,44 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * xgetcwd.c -- return current directory with unlimited length
+ * Copyright (C) 1992, 1996 Free Software Foundation, Inc.
+ * Written by David MacKenzie <djm@gnu.ai.mit.edu>.
+ *
+ * Special function for busybox written by Vladimir Oleynik <dzo@simtreas.ru>
+*/
+
+#include "libbb.h"
+
+/* Amount to increase buffer size by in each try. */
+#define PATH_INCR 32
+
+/* Return the current directory, newly allocated, arbitrarily long.
+   Return NULL and set errno on error.
+   If argument is not NULL (previous usage allocate memory), call free()
+*/
+
+char *
+xgetcwd(char *cwd)
+{
+	char *ret;
+	unsigned path_max;
+
+	path_max = (unsigned) PATH_MAX;
+	path_max += 2;                /* The getcwd docs say to do this. */
+
+	if (cwd==0)
+		cwd = xmalloc(path_max);
+
+	while ((ret = getcwd(cwd, path_max)) == NULL && errno == ERANGE) {
+		path_max += PATH_INCR;
+		cwd = xrealloc(cwd, path_max);
+	}
+
+	if (ret == NULL) {
+		free(cwd);
+		bb_perror_msg("getcwd");
+		return NULL;
+	}
+
+	return cwd;
+}