Add the files

1 files changed, 62 insertions, 0 deletions

diff --git a/src/detection/bootmgr/bootmgr_bsd.c b/src/detection/bootmgr/bootmgr_bsd.c
new file mode 100644
index 0000000..cfaa41d
--- /dev/null
+++ b/src/detection/bootmgr/bootmgr_bsd.c
@@ -0,0 +1,62 @@
+#include "bootmgr.h"
+#include "efi_helper.h"
+#include "common/io.h"
+
+#ifdef __OpenBSD__
+    #include <dev/efi/efiio.h>
+#else
+    #include <sys/efiio.h>
+#endif
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <stdalign.h>
+
+#ifdef __NetBSD__
+typedef uint16_t efi_char;
+#endif
+
+#ifndef EFI_GLOBAL_VARIABLE
+    #define EFI_GLOBAL_VARIABLE { 0x8be4df61, 0x93ca, 0x11d2, 0xaa, 0x0d, { 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c } }
+#endif
+
+const char* ffDetectBootmgr(FFBootmgrResult* result) {
+    FF_AUTO_CLOSE_FD int efifd = open("/dev/efi", O_RDWR | O_CLOEXEC);
+    if (efifd < 0) {
+        return "open(/dev/efi) failed";
+    }
+
+    alignas(uint16_t) uint8_t buffer[2048];
+    struct efi_var_ioc ioc = {
+        .vendor = EFI_GLOBAL_VARIABLE,
+        .data = buffer,
+    };
+
+    ioc.datasize = sizeof(buffer);
+    ioc.name = (efi_char[]) { 'B', 'o', 'o', 't', 'C', 'u', 'r', 'r', 'e', 'n', 't', '\0' };
+    ioc.namesize = sizeof("BootCurrent") * 2;
+    if (ioctl(efifd, EFIIOC_VAR_GET, &ioc) < 0 || ioc.datasize != 2) {
+        return "ioctl(EFIIOC_VAR_GET, BootCurrent) failed";
+    }
+
+    result->order = *(uint16_t*) buffer;
+
+    unsigned char hex[5];
+    snprintf((char*) hex, sizeof(hex), "%04X", result->order);
+    ioc.datasize = sizeof(buffer);
+    ioc.name = (efi_char[]) { 'B', 'o', 'o', 't', hex[0], hex[1], hex[2], hex[3], '\0' };
+    ioc.namesize = sizeof("Boot####") * 2;
+    if (ioctl(efifd, EFIIOC_VAR_GET, &ioc) < 0 || ioc.datasize == sizeof(buffer)) {
+        return "ioctl(EFIIOC_VAR_GET, Boot####) failed";
+    }
+
+    ffEfiFillLoadOption((FFEfiLoadOption*) buffer, result);
+
+    ioc.name = (efi_char[]) { 'S', 'e', 'c', 'u', 'r', 'e', 'B', 'o', 'o', 't', '\0' };
+    ioc.namesize = sizeof("SecureBoot") * 2;
+    ioc.datasize = sizeof(buffer);
+    if (ioctl(efifd, EFIIOC_VAR_GET, &ioc) == 0 && ioc.datasize == 1) {
+        result->secureBoot = !!buffer[0];
+    }
+
+    return NULL;
+}