diff options
Diffstat (limited to 'util/glue-efi.c')
| -rw-r--r-- | util/glue-efi.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/util/glue-efi.c b/util/glue-efi.c new file mode 100644 index 0000000..de0fa6d --- /dev/null +++ b/util/glue-efi.c @@ -0,0 +1,153 @@ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2010,2012,2013 Free Software Foundation, Inc. + * + * GRUB 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 3 of the License, or + * (at your option) any later version. + * + * GRUB 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 GRUB. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <config.h> + +#include <grub/util/misc.h> +#include <grub/util/install.h> +#include <grub/i18n.h> +#include <grub/term.h> +#include <grub/macho.h> + +#define _GNU_SOURCE 1 + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> + +static void +write_fat (FILE *in32, FILE *in64, FILE *out, const char *out_filename, + const char *name32, const char *name64) +{ + struct grub_macho_fat_header head; + struct grub_macho_fat_arch arch32, arch64; + grub_uint32_t size32, size64; + long size; + char *buf; + + fseek (in32, 0, SEEK_END); + size = ftell (in32); + if (size < 0) + grub_util_error ("cannot get end of input file '%s': %s", + name32, strerror (errno)); + size32 = (grub_uint32_t) size; + fseek (in32, 0, SEEK_SET); + + fseek (in64, 0, SEEK_END); + size = ftell (in64); + if (size < 0) + grub_util_error ("cannot get end of input file '%s': %s", + name64, strerror (errno)); + size64 = (grub_uint64_t) size; + fseek (in64, 0, SEEK_SET); + + head.magic = grub_cpu_to_le32_compile_time (GRUB_MACHO_FAT_EFI_MAGIC); + head.nfat_arch = grub_cpu_to_le32_compile_time (2); + arch32.cputype = grub_cpu_to_le32_compile_time (GRUB_MACHO_CPUTYPE_IA32); + arch32.cpusubtype = grub_cpu_to_le32_compile_time (3); + arch32.offset = grub_cpu_to_le32_compile_time (sizeof (head) + + sizeof (arch32) + + sizeof (arch64)); + arch32.size = grub_cpu_to_le32 (size32); + arch32.align = 0; + + arch64.cputype = grub_cpu_to_le32_compile_time (GRUB_MACHO_CPUTYPE_AMD64); + arch64.cpusubtype = grub_cpu_to_le32_compile_time (3); + arch64.offset = grub_cpu_to_le32 (sizeof (head) + sizeof (arch32) + + sizeof (arch64) + size32); + arch64.size = grub_cpu_to_le32 (size64); + arch64.align = 0; + if (fwrite (&head, 1, sizeof (head), out) != sizeof (head) + || fwrite (&arch32, 1, sizeof (arch32), out) != sizeof (arch32) + || fwrite (&arch64, 1, sizeof (arch64), out) != sizeof (arch64)) + { + if (out_filename) + grub_util_error ("cannot write to `%s': %s", + out_filename, strerror (errno)); + else + grub_util_error ("cannot write to the stdout: %s", strerror (errno)); + } + + buf = xmalloc (size32); + if (fread (buf, 1, size32, in32) != size32) + grub_util_error (_("cannot read `%s': %s"), name32, + strerror (errno)); + if (fwrite (buf, 1, size32, out) != size32) + { + if (out_filename) + grub_util_error ("cannot write to `%s': %s", + out_filename, strerror (errno)); + else + grub_util_error ("cannot write to the stdout: %s", strerror (errno)); + } + free (buf); + + buf = xmalloc (size64); + if (fread (buf, 1, size64, in64) != size64) + grub_util_error (_("cannot read `%s': %s"), name64, + strerror (errno)); + if (fwrite (buf, 1, size64, out) != size64) + { + if (out_filename) + grub_util_error ("cannot write to `%s': %s", + out_filename, strerror (errno)); + else + grub_util_error ("cannot write to the stdout: %s", strerror (errno)); + } + free (buf); +} + +void +grub_util_glue_efi (const char *file32, const char *file64, const char *outname) +{ + FILE *in32, *in64, *out; + + in32 = grub_util_fopen (file32, "r"); + + if (!in32) + grub_util_error (_("cannot open `%s': %s"), file32, + strerror (errno)); + + in64 = grub_util_fopen (file64, "r"); + if (!in64) + grub_util_error (_("cannot open `%s': %s"), file64, + strerror (errno)); + + if (outname) + out = grub_util_fopen (outname, "wb"); + else + out = stdout; + + if (!out) + { + grub_util_error (_("cannot open `%s': %s"), outname ? : "stdout", + strerror (errno)); + } + + write_fat (in32, in64, out, outname, + file32, file64); + + fclose (in32); + fclose (in64); + + if (out != stdout) + fclose (out); +} + |