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-rw-r--r--src/libbb/.svn/text-base/xreadlink.c.svn-base37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/libbb/.svn/text-base/xreadlink.c.svn-base b/src/libbb/.svn/text-base/xreadlink.c.svn-base
new file mode 100644
index 0000000..7d77a3b
--- /dev/null
+++ b/src/libbb/.svn/text-base/xreadlink.c.svn-base
@@ -0,0 +1,37 @@
+/*
+ * xreadlink.c - safe implementation of readlink.
+ * Returns a NULL on failure...
+ */
+
+#include <stdio.h>
+
+/*
+ * NOTE: This function returns a malloced char* that you will have to free
+ * yourself. You have been warned.
+ */
+
+#include <unistd.h>
+#include "libbb.h"
+
+extern char *xreadlink(const char *path)
+{
+ static const int GROWBY = 80; /* how large we will grow strings by */
+
+ char *buf = NULL;
+ int bufsize = 0, readsize = 0;
+
+ do {
+ buf = xrealloc(buf, bufsize += GROWBY);
+ readsize = readlink(path, buf, bufsize); /* 1st try */
+ if (readsize == -1) {
+ perror_msg("%s", path);
+ return NULL;
+ }
+ }
+ while (bufsize < readsize + 1);
+
+ buf[readsize] = '\0';
+
+ return buf;
+}
+