GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy.c

   1 /******************************************************************************
   2  * ventoy.c
   3  *
   4  * Copyright (c) 2020, longpanda <admin@ventoy.net>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 3 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include <grub/types.h>
  22 #include <grub/misc.h>
  23 #include <grub/mm.h>
  24 #include <grub/err.h>
  25 #include <grub/dl.h>
  26 #include <grub/disk.h>
  27 #include <grub/device.h>
  28 #include <grub/term.h>
  29 #include <grub/partition.h>
  30 #include <grub/file.h>
  31 #include <grub/normal.h>
  32 #include <grub/extcmd.h>
  33 #include <grub/datetime.h>
  34 #include <grub/net.h>
  35 #include <grub/misc.h>
  36 #include <grub/kernel.h>
  37 #include <grub/time.h>
  38 #include <grub/ventoy.h>
  39 #include "ventoy_def.h"
  40
  41 GRUB_MOD_LICENSE ("GPLv3+");
  42
  43 int g_ventoy_debug = 0;
  44 static int g_efi_os = 0xFF;
  45 grub_uint32_t g_ventoy_plat_data;
  46
  47 void ventoy_debug(const char *fmt, ...)
  48 {
  49     va_list args;
  50
  51     va_start (args, fmt);
  52     grub_vprintf (fmt, args);
  53     va_end (args);
  54 }
  55
  56 void ventoy_str_tolower(char *str)
  57 {
  58     while (*str)
  59     {
  60         *str = grub_tolower(*str);
  61         str++;
  62     }
  63 }
  64
  65 void ventoy_str_toupper(char *str)
  66 {
  67     while (*str)
  68     {
  69         *str = grub_toupper(*str);
  70         str++;
  71     }
  72 }
  73
  74
  75
  76 int ventoy_strcmp(const char *pattern, const char *str)
  77 {
  78     while (*pattern && *str)
  79     {
  80         if ((*pattern != *str) && (*pattern != '*'))
  81             break;
  82
  83         pattern++;
  84         str++;
  85     }
  86
  87     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
  88 }
  89
  90 int ventoy_strncmp (const char *pattern, const char *str, grub_size_t n)
  91 {
  92     if (n == 0)
  93         return 0;
  94
  95     while (*pattern && *str && --n)
  96     {
  97         if ((*pattern != *str) && (*pattern != '*'))
  98             break;
  99
 100         pattern++;
 101         str++;
 102     }
 103
 104     return (int)(grub_uint8_t)*pattern - (int)(grub_uint8_t)*str;
 105 }
 106
 107 void ventoy_debug_dump_guid(const char *prefix, grub_uint8_t *guid)
 108 {
 109     int i;
 110
 111     if (!g_ventoy_debug)
 112     {
 113         return;
 114     }
 115
 116     debug("%s", prefix);
 117     for (i = 0; i < 16; i++)
 118     {
 119         grub_printf("%02x ", guid[i]);
 120     }
 121     grub_printf("\n");
 122 }
 123
 124 int ventoy_is_efi_os(void)
 125 {
 126     if (g_efi_os > 1)
 127     {
 128         g_efi_os = (grub_strstr(GRUB_PLATFORM, "efi")) ? 1 : 0;
 129     }
 130
 131     return g_efi_os;
 132 }
 133
 134 static int ventoy_arch_mode_init(void)
 135 {
 136     #ifdef GRUB_MACHINE_EFI
 137     if (grub_strcmp(GRUB_TARGET_CPU, "i386") == 0)
 138     {
 139         g_ventoy_plat_data = VTOY_PLAT_I386_UEFI;
 140         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "ia32");
 141     }
 142     else if (grub_strcmp(GRUB_TARGET_CPU, "arm64") == 0)
 143     {
 144         g_ventoy_plat_data = VTOY_PLAT_ARM64_UEFI;
 145         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "aa64");
 146     }
 147     else if (grub_strcmp(GRUB_TARGET_CPU, "mips64el") == 0)
 148     {
 149         g_ventoy_plat_data = VTOY_PLAT_MIPS_UEFI;
 150         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "mips");
 151     }
 152     else
 153     {
 154         g_ventoy_plat_data = VTOY_PLAT_X86_64_UEFI;
 155         grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "uefi");
 156     }
 157 #else
 158     g_ventoy_plat_data = VTOY_PLAT_X86_LEGACY;
 159     grub_snprintf(g_arch_mode_suffix, sizeof(g_arch_mode_suffix), "%s", "legacy");
 160 #endif
 161
 162     return 0;
 163 }
 164
 165 GRUB_MOD_INIT(ventoy)
 166 {
 167     ventoy_env_init();
 168     ventoy_arch_mode_init();
 169     ventoy_register_all_cmd();
 170 }
 171
 172 GRUB_MOD_FINI(ventoy)
 173 {
 174     ventoy_unregister_all_cmd();
 175 }
 176