3 files changed, 46 insertions, 0 deletions
diff --git a/compat/id-files-stat.c b/compat/id-files-stat.c
new file mode 100644
index 00000000..62f0f57e
--- /dev/null
+++ b/compat/id-files-stat.c
@@ -0,0 +1,7 @@
+#include "../token.h"
+#include <sys/stat.h>
+
+int identical_files(struct stream* s, struct stat *st, const char * name)
+{
+	return s->dev == st->st_dev && s->ino == st->st_ino;
+}
diff --git a/compat/mmap-blob.c b/compat/mmap-blob.c
new file mode 100644
index 00000000..6ddcd84a
--- /dev/null
+++ b/compat/mmap-blob.c
@@ -0,0 +1,33 @@
+#include <sys/mman.h>
+#include <sys/types.h>
+
+/*
+ * Allow old BSD naming too, it would be a pity to have to make a
+ * separate file just for this.
+ */
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
+/*
+ * Our blob allocator enforces the strict CHUNK size
+ * requirement, as a portability check.
+ */
+void *blob_alloc(unsigned long size)
+{
+	void *ptr;
+
+	if (size & ~CHUNK)
+		die("internal error: bad allocation size (%d bytes)", size);
+	ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+	if (ptr == MAP_FAILED)
+		ptr = NULL;
+	return ptr;
+}
+
+void blob_free(void *addr, unsigned long size)
+{
+	if (!size || (size & ~CHUNK) || ((unsigned long) addr & 512))
+		die("internal error: bad blob free (%d bytes at %p)", size, addr);
+	munmap(addr, size);
+}
diff --git a/compat/strtold.c b/compat/strtold.c
new file mode 100644
index 00000000..1b6ad7d5
--- /dev/null
+++ b/compat/strtold.c
@@ -0,0 +1,6 @@
+#include <stdlib.h>
+
+long double string_to_ld(const char *nptr, char **endptr)
+{
+	return strtold(nptr, endptr);
+}