mirror of https://github.com/tailix/libkernaux.git
Add MBR (Master boot record) (closes #19)
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2f06a24f63
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553C0EBBEB5D5F08
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@ -58,6 +58,10 @@ if WITH_FRAMEBUFFER
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libkernaux_a_SOURCES += src/framebuffer.c
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endif
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if WITH_MBR
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libkernaux_a_SOURCES += src/mbr.c
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endif
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if WITH_MULTIBOOT2
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libkernaux_a_SOURCES += \
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src/multiboot2/enums_to_str.c \
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@ -46,6 +46,7 @@ API
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* [Page Frame Allocator](/include/kernaux/pfa.h) *(work in progress)*
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* [Example](/examples/pfa.c)
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* Data formats
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* [Master Boot Record](/include/kernaux/mbr.h) *(work in progress)*
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* [Multiboot 2 (GRUB 2) information parser](/include/kernaux/multiboot2.h) *(work in progress)*
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* Stivale 2 (Limine) information parser *(planned)*
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* [ELF utils](/include/kernaux/elf.h) *(work in progress)*
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@ -96,6 +97,7 @@ are some non-default options:
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* `--with[out]-console`
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* `--with[out]-elf`
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* `--with[out]-framebuffer`
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* `--with[out]-mbr`
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* `--with[out]-multiboot2`
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* `--with[out]-pfa`
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* `--with[out]-units`
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@ -23,6 +23,7 @@ AC_ARG_WITH( [cmdline], AS_HELP_STRING([--without-cmdline], [without co
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AC_ARG_WITH( [console], AS_HELP_STRING([--without-console], [without serial console]))
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AC_ARG_WITH( [elf], AS_HELP_STRING([--without-elf], [without ELF utils]))
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AC_ARG_WITH( [framebuffer], AS_HELP_STRING([--without-framebuffer], [without framebuffer]))
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AC_ARG_WITH( [mbr], AS_HELP_STRING([--without-mbr], [without Master Boot Record]))
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AC_ARG_WITH( [multiboot2], AS_HELP_STRING([--without-multiboot2], [without Multiboot 2 information parser]))
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AC_ARG_WITH( [pfa], AS_HELP_STRING([--without-pfa], [without Page Frame Allocator]))
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AC_ARG_WITH( [units], AS_HELP_STRING([--without-units], [without measurement units utils]))
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@ -67,6 +68,7 @@ AM_CONDITIONAL([WITH_CMDLINE], [test "$with_cmdline" != no])
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AM_CONDITIONAL([WITH_CONSOLE], [test "$with_console" != no])
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AM_CONDITIONAL([WITH_ELF], [test "$with_elf" != no])
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AM_CONDITIONAL([WITH_FRAMEBUFFER], [test "$with_framebuffer" != no])
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AM_CONDITIONAL([WITH_MBR], [test "$with_mbr" != no])
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AM_CONDITIONAL([WITH_MULTIBOOT2], [test "$with_multiboot2" != no])
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AM_CONDITIONAL([WITH_PFA], [test "$with_pfa" != no])
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AM_CONDITIONAL([WITH_UNITS], [test "$with_units" != no])
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@ -93,6 +95,7 @@ AS_IF([test "$with_cmdline" != no], [AC_DEFINE([WITH_CMDLINE],
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AS_IF([test "$with_console" != no], [AC_DEFINE([WITH_CONSOLE], [1], [with serial console])])
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AS_IF([test "$with_elf" != no], [AC_DEFINE([WITH_ELF], [1], [with ELF utils])])
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AS_IF([test "$with_framebuffer" != no], [AC_DEFINE([WITH_FRAMEBUFFER], [1], [with framebuffer])])
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AS_IF([test "$with_mbr" != no], [AC_DEFINE([WITH_MBR], [1], [with Master Boot Record])])
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AS_IF([test "$with_multiboot2" != no], [AC_DEFINE([WITH_MULTIBOOT2], [1], [with Multiboot 2 information parser])])
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AS_IF([test "$with_pfa" != no], [AC_DEFINE([WITH_PFA], [1], [with Page Frame Allocator])])
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AS_IF([test "$with_units", != no], [AC_DEFINE([WITH_UNITS], [1], [with measurement units utils])])
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@ -13,6 +13,7 @@ nobase_include_HEADERS = \
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kernaux/framebuffer.h \
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kernaux/itoa.h \
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kernaux/libc.h \
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kernaux/mbr.h \
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kernaux/multiboot2.h \
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kernaux/pfa.h \
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kernaux/printf.h \
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@ -12,6 +12,7 @@
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#include <kernaux/elf.h>
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#include <kernaux/framebuffer.h>
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#include <kernaux/itoa.h>
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#include <kernaux/mbr.h>
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#include <kernaux/multiboot2.h>
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#include <kernaux/pfa.h>
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#include <kernaux/printf.h>
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@ -0,0 +1,45 @@
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#ifndef KERNAUX_INCLUDED_MBR
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#define KERNAUX_INCLUDED_MBR
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stdint.h>
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#define KERNAUX_MBR_SIZE 512
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#define KERNAUX_MBR_MAGIC 0xAA55
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#define KERNAUX_MBR_ENTRIES 4
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#define KERNAUX_MBR_BOOTSTRAP_SIZE \
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(KERNAUX_MBR_SIZE - sizeof(struct KernAux_Mbr_Info))
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struct KernAux_Mbr_Entry {
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uint8_t drive_attributes;
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unsigned start_chs_address : 24;
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uint8_t partition_type;
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unsigned last_chs_address : 24;
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uint32_t start_lba;
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uint32_t sectors_count;
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}
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__attribute__((packed));
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struct KernAux_Mbr_Info {
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uint32_t disk_id;
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uint16_t reserved;
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struct KernAux_Mbr_Entry entries[KERNAUX_MBR_ENTRIES];
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uint16_t magic;
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}
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__attribute__((packed));
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struct KernAux_Mbr {
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uint8_t bootstrap[KERNAUX_MBR_BOOTSTRAP_SIZE];
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struct KernAux_Mbr_Info info;
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}
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__attribute__((packed));
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#ifdef __cplusplus
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}
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#endif
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#endif
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