1 files changed, 89 insertions, 0 deletions
diff --git a/ext/libelf/elf_memory.c b/ext/libelf/elf_memory.c
new file mode 100644
index 000000000..07c645bad
--- /dev/null
+++ b/ext/libelf/elf_memory.c
@@ -0,0 +1,89 @@
+/*-
+ * Copyright (c) 2006 Joseph Koshy
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+#include <ar.h>
+#include "libelf.h"
+#include <string.h>
+
+#include "_libelf.h"
+
+Elf *
+elf_memory(char *image, size_t sz)
+{
+        Elf *e;
+
+        if (LIBELF_PRIVATE(version) == EV_NONE) {
+                LIBELF_SET_ERROR(SEQUENCE, 0);
+                return (NULL);
+        }
+
+        if (image == NULL || sz == 0) {
+                LIBELF_SET_ERROR(ARGUMENT, 0);
+                return (NULL);
+        }
+
+        if ((e = _libelf_allocate_elf()) == NULL)
+                return (NULL);
+
+        e->e_cmd = ELF_C_READ;
+        e->e_rawfile = image;
+        e->e_rawsize = sz;
+
+#undef	LIBELF_IS_ELF
+#define	LIBELF_IS_ELF(P) ((P)[EI_MAG0] == ELFMAG0 && 		\
+        (P)[EI_MAG1] == ELFMAG1 && (P)[EI_MAG2] == ELFMAG2 &&	\
+        (P)[EI_MAG3] == ELFMAG3)
+
+        if (sz > EI_NIDENT && LIBELF_IS_ELF(image)) {
+                _libelf_init_elf(e, ELF_K_ELF);
+                e->e_class = image[EI_CLASS];
+                e->e_byteorder = image[EI_DATA];
+                e->e_version = image[EI_VERSION];
+
+                if (e->e_version > EV_CURRENT) {
+                        e = _libelf_release_elf(e);
+                        LIBELF_SET_ERROR(VERSION, 0);
+                        return (NULL);
+                }
+
+                if ((e->e_byteorder != ELFDATA2LSB && e->e_byteorder !=
+                    ELFDATA2MSB) || (e->e_class != ELFCLASS32 && e->e_class !=
+                    ELFCLASS64)) {
+                        e = _libelf_release_elf(e);
+                        LIBELF_SET_ERROR(HEADER, 0);
+                        return (NULL);
+                }
+
+        } else if (sz >= SARMAG &&
+            strncmp(image, ARMAG, (size_t) SARMAG) == 0) {
+                _libelf_init_elf(e, ELF_K_AR);
+                e = _libelf_ar_open(e);
+        } else
+                _libelf_init_elf(e, ELF_K_NONE);
+
+        return (e);
+}