Splitted out SMBIOS/DMI dump functions from dmidecode.c to separate files

1 files changed, 83 insertions, 0 deletions

diff --git a/src/efi.c b/src/efi.c
new file mode 100644
index 0000000..9802171
--- /dev/null
+++ b/src/efi.c
@@ -0,0 +1,83 @@
+/*
+ *   Copyright 2009      David Sommerseth <davids@redhat.com>
+ *   Copyright 2002-2008 Jean Delvare <khali@linux-fr.org>
+ *   Copyright 2000-2002 Alan Cox <alan@redhat.com>
+ *
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ *
+ *   For the avoidance of doubt the "preferred form" of this code is one which
+ *   is in an open unpatent encumbered format. Where cryptographic key signing
+ *   forms part of the process of creating an executable the information
+ *   including keys needed to generate an equivalently functional executable
+ *   are deemed to be part of the source code.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "efi.h"
+
+/**
+ * @file xmlpythonizer.c
+ * @brief Helper function for EFI support
+ * @author Jean Delvare <khali@linux-fr.org>
+ * @author Alan Cox <alan@redhat.com>
+ */
+
+/**
+ * Probe for EFI interface
+ * @param size_t*
+ * @return returns EFI_NOT_FOUND or EFI_NO_SMBIOS
+ */
+int address_from_efi(size_t * address)
+{
+        FILE *efi_systab;
+        const char *filename;
+        char linebuf[64];
+        int ret;
+
+        *address = 0;           /* Prevent compiler warning */
+
+        /*
+         ** Linux <= 2.6.6: /proc/efi/systab
+         ** Linux >= 2.6.7: /sys/firmware/efi/systab
+         */
+        if((efi_systab = fopen(filename = "/sys/firmware/efi/systab", "r")) == NULL
+           && (efi_systab = fopen(filename = "/proc/efi/systab", "r")) == NULL) {
+                /* No EFI interface, fallback to memory scan */
+                return EFI_NOT_FOUND;
+        }
+        ret = EFI_NO_SMBIOS;
+        while((fgets(linebuf, sizeof(linebuf) - 1, efi_systab)) != NULL) {
+                char *addrp = strchr(linebuf, '=');
+
+                *(addrp++) = '\0';
+                if(strcmp(linebuf, "SMBIOS") == 0) {
+                        *address = strtoul(addrp, NULL, 0);
+                        printf("# SMBIOS entry point at 0x%08lx\n", (unsigned long)*address);
+                        ret = 0;
+                        break;
+                }
+        }
+        if(fclose(efi_systab) != 0)
+                perror(filename);
+
+        if(ret == EFI_NO_SMBIOS)
+                fprintf(stderr, "%s: SMBIOS entry point missing\n", filename);
+
+        return ret;
+}
+