diff options
Diffstat (limited to 'contrib/syslinux-4.02/com32/gpllib/disk')
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/ata.c | 62 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/bootloaders.c | 46 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/errno_disk.c | 12 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/error.c | 23 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/geom.c | 271 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/labels.c | 654 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c | 127 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/msdos.c | 162 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/read.c | 135 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/swsusp.c | 27 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/util.c | 45 | ||||
| -rw-r--r-- | contrib/syslinux-4.02/com32/gpllib/disk/write.c | 126 |
12 files changed, 1690 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/ata.c b/contrib/syslinux-4.02/com32/gpllib/disk/ata.c new file mode 100644 index 0000000..78f669e --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/ata.c @@ -0,0 +1,62 @@ +#include <inttypes.h> +#include <string.h> + +/** + * ata_id_string - Convert IDENTIFY DEVICE page into string + * @id: IDENTIFY DEVICE results we will examine + * @s: string into which data is output + * @ofs: offset into identify device page + * @len: length of string to return. must be an even number. + * + * The strings in the IDENTIFY DEVICE page are broken up into + * 16-bit chunks. Run through the string, and output each + * 8-bit chunk linearly, regardless of platform. + * + * LOCKING: + * caller. + */ +void ata_id_string(const uint16_t * id, unsigned char *s, + unsigned int ofs, unsigned int len) +{ + unsigned int c; + + while (len > 0) { + c = id[ofs] >> 8; + *s = c; + s++; + + c = id[ofs] & 0xff; + *s = c; + s++; + + ofs++; + len -= 2; + } +} + +/** + * ata_id_c_string - Convert IDENTIFY DEVICE page into C string + * @id: IDENTIFY DEVICE results we will examine + * @s: string into which data is output + * @ofs: offset into identify device page + * @len: length of string to return. must be an odd number. + * + * This function is identical to ata_id_string except that it + * trims trailing spaces and terminates the resulting string with + * null. @len must be actual maximum length (even number) + 1. + * + * LOCKING: + * caller. + */ +void ata_id_c_string(const uint16_t * id, unsigned char *s, + unsigned int ofs, unsigned int len) +{ + unsigned char *p; + + ata_id_string(id, s, ofs, len - 1); + + p = s + strnlen((const char *)s, len - 1); + while (p > s && p[-1] == ' ') + p--; + *p = '\0'; +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/bootloaders.c b/contrib/syslinux-4.02/com32/gpllib/disk/bootloaders.c new file mode 100644 index 0000000..e034011 --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/bootloaders.c @@ -0,0 +1,46 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <disk/bootloaders.h> +#include <disk/common.h> +#include <disk/geom.h> +#include <disk/read.h> +#include <stdlib.h> +#include <string.h> + +/** + * get_bootloader_string - return a string describing the boot code in a + * bootsector + * @d: driveinfo struct describing the drive + * @p: partition to scan (usually the active one) + * @buffer: pre-allocated buffer + * @buffer_size: @buffer size + **/ +int get_bootloader_string(struct driveinfo *d, const struct part_entry *p, + char *buffer, const int buffer_size) +{ + char boot_sector[SECTOR * sizeof(char)]; + + if (read_sectors(d, &boot_sector, p->start_lba, 1) == -1) + return -1; + else { + if (!strncmp(boot_sector + 3, "SYSLINUX", 8)) + strlcpy(buffer, "SYSLINUX", buffer_size - 1); + else if (!strncmp(boot_sector + 3, "EXTLINUX", 8)) + strlcpy(buffer, "EXTLINUX", buffer_size - 1); + else if (!strncmp(boot_sector + 3, "MSWIN4.1", 8)) + strlcpy(buffer, "MSWIN4.1", buffer_size - 1); + else + return -1; + /* Add more... */ + + buffer[buffer_size - 1] = '\0'; + return 0; + } +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/errno_disk.c b/contrib/syslinux-4.02/com32/gpllib/disk/errno_disk.c new file mode 100644 index 0000000..8a68802 --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/errno_disk.c @@ -0,0 +1,12 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <disk/errno_disk.h> + +int errno_disk; diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/error.c b/contrib/syslinux-4.02/com32/gpllib/disk/error.c new file mode 100644 index 0000000..fe4722e --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/error.c @@ -0,0 +1,23 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <stdio.h> +#include <string.h> +#include <disk/errno_disk.h> + +/** + * get_error - decode a disk error status + * @s: Preallocated buffer + * + * Fill @buffer_ptr with the last errno_disk + **/ +void get_error(const char *s) +{ + fprintf(stderr, "%s: error %d\n", s, errno_disk); +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/geom.c b/contrib/syslinux-4.02/com32/gpllib/disk/geom.c new file mode 100644 index 0000000..9e673ed --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/geom.c @@ -0,0 +1,271 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * Some parts borrowed from chain.c32: + * + * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved + * Copyright 2009 Intel Corporation; author: H. Peter Anvin + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <com32.h> +#include <string.h> +#include <stdio.h> +#include <disk/geom.h> + +#include <stdio.h> + +/** + * lba_to_chs - split given lba into cylinders/heads/sectors + **/ +void lba_to_chs(const struct driveinfo *drive_info, const int lba, + unsigned int *cylinder, unsigned int *head, + unsigned int *sector) +{ + unsigned int track; + + /* Use EDD, if valid */ + if (drive_info->edd_params.sectors_per_track > 0 && + drive_info->edd_params.heads > 0) { + *cylinder = (lba % drive_info->edd_params.sectors_per_track) + 1; + track = lba / drive_info->edd_params.sectors_per_track; + *head = track % drive_info->edd_params.heads; + *sector = track / drive_info->edd_params.heads; + } else if (drive_info->cbios) { + *cylinder = (lba % drive_info->legacy_sectors_per_track) + 1; + track = lba / drive_info->legacy_sectors_per_track; + *head = track % (drive_info->legacy_max_head + 1); + *sector = track / (drive_info->legacy_max_head + 1); + } +} + +/** + * detect_extensions - detect if we can use extensions + * + * INT 13 - IBM/MS INT 13 Extensions - INSTALLATION CHECK + * AH = 41h + * BX = 55AAh + * DL = drive (80h-FFh) + * + * Return: CF set on error (extensions not supported) + * AH = 01h (invalid function) + * CF clear if successful + * BX = AA55h if installed + * AH = major version of extensions + * 01h = 1.x + * 20h = 2.0 / EDD-1.0 + * 21h = 2.1 / EDD-1.1 + * 30h = EDD-3.0 + * AL = internal use + * CX = API subset support bitmap (see #00271) + * DH = extension version (v2.0+ ??? -- not present in 1.x) + * + * Note: the Phoenix Enhanced Disk Drive Specification v1.0 uses version 2.0 of + * the INT 13 Extensions API + * + * Bitfields for IBM/MS INT 13 Extensions API support bitmap: + * Bit(s) Description (Table 00271) + * 0 extended disk access functions (AH=42h-44h,47h,48h) supported + * 1 removable drive controller functions (AH=45h,46h,48h,49h,INT 15/AH=52h) + * supported + * 2 enhanced disk drive (EDD) functions (AH=48h,AH=4Eh) supported + * extended drive parameter table is valid (see #00273,#00278) + * 3-15 reserved (0) + **/ +static int detect_extensions(struct driveinfo *drive_info) +{ + com32sys_t getebios, ebios; + + memset(&getebios, 0, sizeof getebios); + memset(&ebios, 0, sizeof ebios); + + getebios.eflags.b[0] = 0x3; /* CF set */ + getebios.ebx.w[0] = 0x55aa; + getebios.edx.b[0] = drive_info->disk; + getebios.eax.b[1] = 0x41; + + __intcall(0x13, &getebios, &ebios); + + if (!(ebios.eflags.l & EFLAGS_CF) && ebios.ebx.w[0] == 0xaa55) { + drive_info->ebios = 1; + drive_info->edd_version = ebios.eax.b[1]; + drive_info->edd_functionality_subset = ebios.ecx.w[0]; + return 0; + } else + return -1; /* Drive does not exist? */ +} + +/** + * get_drive_parameters_with_extensions - retrieve disk parameters via AH=48h + * + * INT 13 - IBM/MS INT 13 Extensions - GET DRIVE PARAMETERS + * AH = 48h + * DL = drive (80h-FFh) + * DS:SI -> buffer for drive parameters + * Return: CF clear if successful + * AH = 00h + * DS:SI buffer filled + * CF set on error + * AH = error code (see #00234) + * BUG: several different Compaq BIOSes incorrectly report high-numbered + * drives (such as 90h, B0h, D0h, and F0h) as present, giving them the + * same geometry as drive 80h; as a workaround, scan through disk + * numbers, stopping as soon as the number of valid drives encountered + * equals the value in 0040h:0075h + **/ +static int get_drive_parameters_with_extensions(struct driveinfo *drive_info) +{ + com32sys_t inreg, outreg; + struct edd_device_parameters *dp = __com32.cs_bounce; + + memset(&inreg, 0, sizeof inreg); + + /* + * The caller shall set this value to the maximum Result Buffer + * length, in bytes. If the length of this buffer is less than 30 + * bytes, this function shall not return the pointer to Drive Parameter + * Table (DPT) extension. If the buffer length is 30 or greater on + * entry, it shall be set to 30 on exit. If the buffer length is + * between 26 and 29, it shall be set to 26 on exit. + * If the buffer length is less than 26 on entry an error shall be + * returned. + */ + dp->len = sizeof(struct edd_device_parameters); + + inreg.esi.w[0] = OFFS(dp); + inreg.ds = SEG(dp); + inreg.edx.b[0] = drive_info->disk; + inreg.eax.b[1] = 0x48; + + __intcall(0x13, &inreg, &outreg); + + /* CF set on error */ + if (outreg.eflags.l & EFLAGS_CF) + return outreg.eax.b[1]; + + memcpy(&drive_info->edd_params, dp, sizeof drive_info->edd_params); + + return 0; +} + +/** + * get_drive_parameters_without_extensions - retrieve drive parameters via AH=08h + * + * INT 13 - DISK - GET DRIVE PARAMETERS (PC,XT286,CONV,PS,ESDI,SCSI) + * AH = 08h + * DL = drive (bit 7 set for hard disk) + * + * Return: CF set on error + * AH = status (07h) (see #00234) + * CF clear if successful + * AH = 00h + * AL = 00h on at least some BIOSes + * BL = drive type (AT/PS2 floppies only) (see #00242) + * CH = low eight bits of maximum cylinder number + * CL = maximum sector number (bits 5-0) + * high two bits of maximum cylinder number (bits 7-6) + * DH = maximum head number + * DL = number of drives + * ES:DI -> drive parameter table (floppies only) + * + * Notes: + * - may return successful even though specified drive is greater than the + * number of attached drives of that type (floppy/hard); check DL to + * ensure validity + * - for systems predating the IBM AT, this call is only valid for hard + * disks, as it is implemented by the hard disk BIOS rather than the + * ROM BIOS + * - Toshiba laptops with HardRAM return DL=02h when called with DL=80h, + * but fail on DL=81h. The BIOS data at 40h:75h correctly reports 01h. + * may indicate only two drives present even if more are attached; to + * ensure a correct count, one can use AH=15h to scan through possible + * drives + * - for BIOSes which reserve the last cylinder for testing purposes, the + * cylinder count is automatically decremented + * on PS/1s with IBM ROM DOS 4, nonexistent drives return CF clear, + * BX=CX=0000h, and ES:DI = 0000h:0000h + * - the PC-Tools PCFORMAT program requires that AL=00h before it will + * proceed with the formatting + * + * BUG: several different Compaq BIOSes incorrectly report high-numbered + * drives (such as 90h, B0h, D0h, and F0h) as present, giving them the + * same geometry as drive 80h; as a workaround, scan through disk + * numbers, stopping as soon as the number of valid drives encountered + * equals the value in 0040h:0075h + * + * SeeAlso: AH=06h"Adaptec",AH=13h"SyQuest",AH=48h,AH=15h,INT 1E + * SeeAlso: INT 41"HARD DISK 0" + **/ +static int get_drive_parameters_without_extensions(struct driveinfo *drive_info) +{ + com32sys_t getparm, parm; + + memset(&getparm, 0, sizeof getparm); + memset(&parm, 0, sizeof parm); + + /* Ralf Brown recommends setting ES:DI to 0:0 */ + getparm.esi.w[0] = 0; + getparm.ds = 0; + getparm.edx.b[0] = drive_info->disk; + getparm.eax.b[1] = 0x08; + + __intcall(0x13, &getparm, &parm); + + /* CF set on error */ + if (parm.eflags.l & EFLAGS_CF) + return parm.eax.b[1]; + + /* DL contains the maximum drive number (it starts at 0) */ + drive_info->legacy_max_drive = parm.edx.b[0]; + + // XXX broken + /* Drive specified greater than the bumber of attached drives */ + //if (drive_info->disk > drive_info->drives) + // return -1; + + drive_info->legacy_type = parm.ebx.b[0]; + + /* DH contains the maximum head number (it starts at 0) */ + drive_info->legacy_max_head = parm.edx.b[1]; + + /* Maximum sector number (bits 5-0) per track */ + drive_info->legacy_sectors_per_track = parm.ecx.b[0] & 0x3f; + + /* + * Maximum cylinder number: + * CH = low eight bits of maximum cylinder number + * CL = high two bits of maximum cylinder number (bits 7-6) + */ + drive_info->legacy_max_cylinder = parm.ecx.b[1] + + ((parm.ecx.b[0] & 0xc0) << 2); + + if (drive_info->legacy_sectors_per_track > 0) + drive_info->cbios = 1; /* Valid geometry */ + + return 0; +} + +/** + * get_drive_parameters - retrieve drive parameters + * @drive_info: driveinfo structure to fill + **/ +int get_drive_parameters(struct driveinfo *drive_info) +{ + int return_code; + + if (detect_extensions(drive_info)) + return -1; + + return_code = get_drive_parameters_without_extensions(drive_info); + + /* If geometry isn't valid, no need to try to get more info about the drive */ + /* Looks like in can confuse some optical drives */ + if (drive_info->ebios && drive_info->cbios) + get_drive_parameters_with_extensions(drive_info); + + return return_code; +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/labels.c b/contrib/syslinux-4.02/com32/gpllib/disk/labels.c new file mode 100644 index 0000000..ad3d33b --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/labels.c @@ -0,0 +1,654 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <stdlib.h> +#include <string.h> + +void get_label(int label, char **buffer_label) +{ + int buffer_size = (80 * sizeof(char)); + char *buffer = malloc(buffer_size); + *buffer_label = buffer; + + switch (label) { + case 0x01: + strlcpy(buffer, "DOS 12-bit fat", buffer_size); + break; + case 0x02: + strlcpy(buffer, "XENIX root", buffer_size); + break; + case 0x03: + strlcpy(buffer, "XENIX /usr", buffer_size); + break; + case 0x04: + strlcpy(buffer, "DOS 3.0+ 16-bit FAT (up to 32M)", buffer_size); + break; + case 0x05: + strlcpy(buffer, "DOS 3.3+ Extended Partition", buffer_size); + break; + case 0x06: + strlcpy(buffer, "DOS 3.31+ 16-bit FAT (over 32M)", buffer_size); + break; + case 0x07: + strlcpy(buffer, "OS/2 IFS (e.g., HPFS)", buffer_size); + break; + //case 0x07: strlcpy(buffer, "Advanced Unix", buffer_size); break; + //case 0x07: strlcpy(buffer, "Windows NT NTFS", buffer_size); break; + //case 0x07: strlcpy(buffer, "QNX2.x (pre-1988)", buffer_size); break; + case 0x08: + strlcpy(buffer, "OS/2 (v1.0-1.3 only)", buffer_size); + break; + //case 0x08: strlcpy(buffer, "AIX boot partition", buffer_size); break; + //case 0x08: strlcpy(buffer, "SplitDrive", buffer_size); break; + //case 0x08: strlcpy(buffer, "DELL partition spanning multiple drives", buffer_size); break; + //case 0x08: strlcpy(buffer, "Commodore DOS", buffer_size); break; + //case 0x08: strlcpy(buffer, "QNX 1.x and 2.x ("qny")", buffer_size); break; + case 0x09: + strlcpy(buffer, "AIX data partition", buffer_size); + break; + //case 0x09: strlcpy(buffer, "Coherent filesystem", buffer_size); break; + //case 0x09: strlcpy(buffer, "QNX 1.x and 2.x ("qnz")", buffer_size); break; + case 0x0a: + strlcpy(buffer, "OS/2 Boot Manager", buffer_size); + break; + //case 0x0a: strlcpy(buffer, "Coherent swap partition", buffer_size); break; + //case 0x0a: strlcpy(buffer, "OPUS", buffer_size); break; + case 0x0b: + strlcpy(buffer, "WIN95 OSR2 32-bit FAT", buffer_size); + break; + case 0x0c: + strlcpy(buffer, "WIN95 OSR2 32-bit FAT, LBA-mapped", buffer_size); + break; + case 0x0e: + strlcpy(buffer, "WIN95: DOS 16-bit FAT, LBA-mapped", buffer_size); + break; + case 0x0f: + strlcpy(buffer, "WIN95: Extended partition, LBA-mapped", buffer_size); + break; + case 0x10: + strlcpy(buffer, "OPUS (?)", buffer_size); + break; + case 0x11: + strlcpy(buffer, "Hidden DOS 12-bit FAT", buffer_size); + break; + case 0x12: + strlcpy(buffer, "Compaq config partition", buffer_size); + break; + case 0x14: + strlcpy(buffer, "Hidden DOS 16-bit FAT <32M", buffer_size); + break; + case 0x16: + strlcpy(buffer, "Hidden DOS 16-bit FAT >=32M", buffer_size); + break; + case 0x17: + strlcpy(buffer, "Hidden IFS (e.g., HPFS)", buffer_size); + break; + case 0x18: + strlcpy(buffer, "AST SmartSleep Partition", buffer_size); + break; + case 0x19: + strlcpy(buffer, "Unused (Claimed for Willowtech Photon COS)", + buffer_size); + break; + case 0x1b: + strlcpy(buffer, "Hidden WIN95 OSR2 32-bit FAT", buffer_size); + break; + case 0x1c: + strlcpy(buffer, "Hidden WIN95 OSR2 32-bit FAT, LBA-mapped", + buffer_size); + break; + case 0x1e: + strlcpy(buffer, "Hidden WIN95 16-bit FAT, LBA-mapped", buffer_size); + break; + case 0x20: + strlcpy(buffer, "Unused", buffer_size); + break; + case 0x21: + strlcpy(buffer, "Reserved", buffer_size); + break; + //case 0x21: strlcpy(buffer, "Unused", buffer_size); break; + case 0x22: + strlcpy(buffer, "Unused", buffer_size); + break; + case 0x23: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x24: + strlcpy(buffer, "NEC DOS 3.x", buffer_size); + break; + case 0x26: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x31: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x32: + strlcpy(buffer, "NOS", buffer_size); + break; + case 0x33: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x34: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x35: + strlcpy(buffer, "JFS on OS/2 or eCS", buffer_size); + break; + case 0x36: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x38: + strlcpy(buffer, "THEOS ver 3.2 2gb partition", buffer_size); + break; + case 0x39: + strlcpy(buffer, "Plan 9 partition", buffer_size); + break; + //case 0x39: strlcpy(buffer, "THEOS ver 4 spanned partition", buffer_size); break; + case 0x3a: + strlcpy(buffer, "THEOS ver 4 4gb partition", buffer_size); + break; + case 0x3b: + strlcpy(buffer, "THEOS ver 4 extended partition", buffer_size); + break; + case 0x3c: + strlcpy(buffer, "PartitionMagic recovery partition", buffer_size); + break; + case 0x3d: + strlcpy(buffer, "Hidden NetWare", buffer_size); + break; + case 0x40: + strlcpy(buffer, "Venix 80286", buffer_size); + break; + case 0x41: + strlcpy(buffer, "Linux/MINIX (sharing disk with DRDOS)", buffer_size); + break; + //case 0x41: strlcpy(buffer, "Personal RISC Boot", buffer_size); break; + //case 0x41: strlcpy(buffer, "PPC PReP (Power PC Reference Platform) Boot", buffer_size); break; + case 0x42: + strlcpy(buffer, "Linux swap (sharing disk with DRDOS)", buffer_size); + break; + //case 0x42: strlcpy(buffer, "SFS (Secure Filesystem)", buffer_size); break; + //case 0x42: strlcpy(buffer, "Windows 2000 marker", buffer_size); break; + case 0x43: + strlcpy(buffer, "Linux native (sharing disk with DRDOS)", buffer_size); + break; + case 0x44: + strlcpy(buffer, "GoBack partition", buffer_size); + break; + case 0x45: + strlcpy(buffer, "Boot-US boot manager", buffer_size); + break; + //case 0x45: strlcpy(buffer, "Priam", buffer_size); break; + //case 0x45: strlcpy(buffer, "EUMEL/Elan", buffer_size); break; + case 0x46: + strlcpy(buffer, "EUMEL/Elan", buffer_size); + break; + case 0x47: + strlcpy(buffer, "EUMEL/Elan", buffer_size); + break; + case 0x48: + strlcpy(buffer, "EUMEL/Elan", buffer_size); + break; + case 0x4a: + strlcpy(buffer, "AdaOS Aquila (Default)", buffer_size); + break; + //case 0x4a: strlcpy(buffer, "ALFS/THIN lightweight filesystem for DOS", buffer_size); break; + case 0x4c: + strlcpy(buffer, "Oberon partition", buffer_size); + break; + case 0x4d: + strlcpy(buffer, "QNX4.x", buffer_size); + break; + case 0x4e: + strlcpy(buffer, "QNX4.x 2nd part", buffer_size); + break; + case 0x4f: + strlcpy(buffer, "QNX4.x 3rd part", buffer_size); + break; + //case 0x4f: strlcpy(buffer, "Oberon partition", buffer_size); break; + case 0x50: + strlcpy(buffer, "OnTrack Disk Manager (older versions) RO", + buffer_size); + break; + //case 0x50: strlcpy(buffer, "Lynx RTOS", buffer_size); break; + //case 0x50: strlcpy(buffer, "Native Oberon (alt)", buffer_size); break; + case 0x51: + strlcpy(buffer, "OnTrack Disk Manager RW (DM6 Aux1)", buffer_size); + break; + //case 0x51: strlcpy(buffer, "Novell", buffer_size); break; + case 0x52: + strlcpy(buffer, "CP/M", buffer_size); + break; + //case 0x52: strlcpy(buffer, "Microport SysV/AT", buffer_size); break; + case 0x53: + strlcpy(buffer, "Disk Manager 6.0 Aux3", buffer_size); + break; + case 0x54: + strlcpy(buffer, "Disk Manager 6.0 Dynamic Drive Overlay", buffer_size); + break; + case 0x55: + strlcpy(buffer, "EZ-Drive", buffer_size); + break; + case 0x56: + strlcpy(buffer, "Golden Bow VFeature Partitioned Volume.", buffer_size); + break; + //case 0x56: strlcpy(buffer, "DM converted to EZ-BIOS", buffer_size); break; + case 0x57: + strlcpy(buffer, "DrivePro", buffer_size); + break; + //case 0x57: strlcpy(buffer, "VNDI Partition", buffer_size); break; + case 0x5c: + strlcpy(buffer, "Priam EDisk", buffer_size); + break; + case 0x61: + strlcpy(buffer, "SpeedStor", buffer_size); + break; + case 0x63: + strlcpy(buffer, + "Unix System V (SCO, ISC Unix, UnixWare, ...), Mach, GNU Hurd", + buffer_size); + break; + case 0x64: + strlcpy(buffer, "PC-ARMOUR protected partition", buffer_size); + break; + //case 0x64: strlcpy(buffer, "Novell Netware 286, 2.xx", buffer_size); break; + case 0x65: + strlcpy(buffer, "Novell Netware 386, 3.xx or 4.xx", buffer_size); + break; + case 0x66: + strlcpy(buffer, "Novell Netware SMS Partition", buffer_size); + break; + case 0x67: + strlcpy(buffer, "Novell", buffer_size); + break; + case 0x68: + strlcpy(buffer, "Novell", buffer_size); + break; + case 0x69: + strlcpy(buffer, "Novell Netware 5+, Novell Netware NSS Partition", + buffer_size); + break; + case 0x70: + strlcpy(buffer, "DiskSecure Multi-Boot", buffer_size); + break; + case 0x71: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x73: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x74: + strlcpy(buffer, "Reserved", buffer_size); + break; + //case 0x74: strlcpy(buffer, "Scramdisk partition", buffer_size); break; + case 0x75: + strlcpy(buffer, "IBM PC/IX", buffer_size); + break; + case 0x76: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0x77: + strlcpy(buffer, "M2FS/M2CS partition", buffer_size); + break; + //case 0x77: strlcpy(buffer, "VNDI Partition", buffer_size); break; + case 0x78: + strlcpy(buffer, "XOSL FS", buffer_size); + break; + case 0x7E: + strlcpy(buffer, " ", buffer_size); + break; + case 0x80: + strlcpy(buffer, "MINIX until 1.4a", buffer_size); + break; + case 0x81: + strlcpy(buffer, "MINIX since 1.4b, early Linux", buffer_size); + break; + //case 0x81: strlcpy(buffer, "Mitac disk manager", buffer_size); break; + //case 0x82: strlcpy(buffer, "Prime", buffer_size); break; + //case 0x82: strlcpy(buffer, "Solaris x86", buffer_size); break; + case 0x82: + strlcpy(buffer, "Linux swap", buffer_size); + break; + case 0x83: + strlcpy(buffer, "Linux native (usually ext2fs)", buffer_size); + break; + case 0x84: + strlcpy(buffer, "OS/2 hidden C: drive", buffer_size); + break; + //case 0x84: strlcpy(buffer, "Hibernation partition", buffer_size); break; + case 0x85: + strlcpy(buffer, "Linux extended partition", buffer_size); + break; + //case 0x86: strlcpy(buffer, "Old Linux RAID partition superblock", buffer_size); break; + case 0x86: + strlcpy(buffer, "NTFS volume set", buffer_size); + break; + case 0x87: + strlcpy(buffer, "NTFS volume set", buffer_size); + break; + case 0x8a: + strlcpy(buffer, "Linux Kernel Partition (used by AiR-BOOT)", + buffer_size); + break; + case 0x8b: + strlcpy(buffer, "Legacy Fault Tolerant FAT32 volume", buffer_size); + break; + case 0x8c: + strlcpy(buffer, + "Legacy Fault Tolerant FAT32 volume using BIOS extd INT 13h", + buffer_size); + break; + case 0x8d: + strlcpy(buffer, "Free FDISK hidden Primary DOS FAT12 partitition", + buffer_size); + break; + case 0x8e: + strlcpy(buffer, "Linux Logical Volume Manager partition", buffer_size); + break; + case 0x90: + strlcpy(buffer, "Free FDISK hidden Primary DOS FAT16 partitition", + buffer_size); + break; + case 0x91: + strlcpy(buffer, "Free FDISK hidden DOS extended partitition", + buffer_size); + break; + case 0x92: + strlcpy(buffer, "Free FDISK hidden Primary DOS large FAT16 partitition", + buffer_size); + break; + case 0x93: + strlcpy(buffer, "Hidden Linux native partition", buffer_size); + break; + //case 0x93: strlcpy(buffer, "Amoeba", buffer_size); break; + case 0x94: + strlcpy(buffer, "Amoeba bad block table", buffer_size); + break; + case 0x95: + strlcpy(buffer, "MIT EXOPC native partitions", buffer_size); + break; + case 0x97: + strlcpy(buffer, "Free FDISK hidden Primary DOS FAT32 partitition", + buffer_size); + break; + case 0x98: + strlcpy(buffer, "Free FDISK hidden Primary DOS FAT32 partitition (LBA)", + buffer_size); + break; + case 0x99: + strlcpy(buffer, "DCE376 logical drive", buffer_size); + break; + case 0x9a: + strlcpy(buffer, "Free FDISK hidden Primary DOS FAT16 partitition (LBA)", + buffer_size); + break; + case 0x9b: + strlcpy(buffer, "Free FDISK hidden DOS extended partitition (LBA)", + buffer_size); + break; + case 0x9f: + strlcpy(buffer, "BSD/OS", buffer_size); + break; + case 0xa0: + strlcpy(buffer, "Laptop hibernation partition", buffer_size); + break; + case 0xa1: + strlcpy(buffer, "Laptop hibernation partition", buffer_size); + break; + //case 0xa1: strlcpy(buffer, "HP Volume Expansion (SpeedStor variant)", buffer_size); break; + case 0xa3: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xa4: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xa5: + strlcpy(buffer, "BSD/386, 386BSD, NetBSD, FreeBSD", buffer_size); + break; + case 0xa6: + strlcpy(buffer, "OpenBSD", buffer_size); + break; + case 0xa7: + strlcpy(buffer, "NEXTSTEP", buffer_size); + break; + case 0xa8: + strlcpy(buffer, "Mac OS-X", buffer_size); + break; + case 0xa9: + strlcpy(buffer, "NetBSD", buffer_size); + break; + case 0xaa: + strlcpy(buffer, "Olivetti Fat 12 1.44Mb Service Partition", + buffer_size); + break; + case 0xab: + strlcpy(buffer, "Mac OS-X Boot partition", buffer_size); + break; + //case 0xab: strlcpy(buffer, "GO! partition", buffer_size); break; + case 0xae: + strlcpy(buffer, "ShagOS filesystem", buffer_size); + break; + case 0xaf: + strlcpy(buffer, "ShagOS swap partition", buffer_size); + break; + case 0xb0: + strlcpy(buffer, "BootStar Dummy", buffer_size); + break; + case 0xb1: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xb3: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xb4: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xb6: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xb7: + strlcpy(buffer, "BSDI BSD/386 filesystem", buffer_size); + break; + case 0xb8: + strlcpy(buffer, "BSDI BSD/386 swap partition", buffer_size); + break; + case 0xbb: + strlcpy(buffer, "Boot Wizard hidden", buffer_size); + break; + case 0xbe: + strlcpy(buffer, "Solaris 8 boot partition", buffer_size); + break; + case 0xc0: + strlcpy(buffer, "CTOS", buffer_size); + break; + //case 0xc0: strlcpy(buffer, "REAL/32 secure small partition", buffer_size); break; + //case 0xc0: strlcpy(buffer, "NTFT Partition", buffer_size); break; + case 0xc1: + strlcpy(buffer, "DRDOS/secured (FAT-12)", buffer_size); + break; + case 0xc2: + strlcpy(buffer, "Reserved for DR-DOS 7+", buffer_size); + break; + //case 0xc2: strlcpy(buffer, "Hidden Linux", buffer_size); break; + case 0xc3: + strlcpy(buffer, "Hidden Linux swap", buffer_size); + break; + case 0xc4: + strlcpy(buffer, "DRDOS/secured (FAT-16, < 32M)", buffer_size); + break; + case 0xc5: + strlcpy(buffer, "DRDOS/secured (extended)", buffer_size); + break; + case 0xc6: + strlcpy(buffer, "DRDOS/secured (FAT-16, >= 32M)", buffer_size); + break; + //case 0xc6: strlcpy(buffer, "Windows NT corrupted FAT16 volume/stripe set", buffer_size); break; + case 0xc7: + strlcpy(buffer, "Windows NT corrupted NTFS volume/stripe set", + buffer_size); + break; + //case 0xc7: strlcpy(buffer, "Syrinx boot", buffer_size); break; + case 0xc8: + strlcpy(buffer, "(See also ID c2.)", buffer_size); + break; + case 0xc9: + strlcpy(buffer, "(See also ID c2.)", buffer_size); + break; + case 0xca: + strlcpy(buffer, "(See also ID c2.)", buffer_size); + break; + case 0xcb: + strlcpy(buffer, "reserved for DRDOS/secured (FAT32)", buffer_size); + break; + case 0xcc: + strlcpy(buffer, "reserved for DRDOS/secured (FAT32, LBA)", buffer_size); + break; + case 0xcd: + strlcpy(buffer, "CTOS Memdump?", buffer_size); + break; + case 0xce: + strlcpy(buffer, "reserved for DRDOS/secured (FAT16, LBA)", buffer_size); + break; + case 0xd0: + strlcpy(buffer, "REAL/32 secure big partition", buffer_size); + break; + case 0xd1: + strlcpy(buffer, "Old Multiuser DOS secured FAT12", buffer_size); + break; + case 0xd4: + strlcpy(buffer, "Old Multiuser DOS secured FAT16 <32M", buffer_size); + break; + case 0xd5: + strlcpy(buffer, "Old Multiuser DOS secured extended partition", + buffer_size); + break; + case 0xd6: + strlcpy(buffer, "Old Multiuser DOS secured FAT16 >=32M", buffer_size); + break; + case 0xd8: + strlcpy(buffer, "CP/M-86", buffer_size); + break; + case 0xda: + strlcpy(buffer, "Non-FS Data", buffer_size); + break; + case 0xdb: + strlcpy(buffer, + "Digital Research CP/M, Concurrent CP/M, Concurrent DOS", + buffer_size); + break; + //case 0xdb: strlcpy(buffer, "CTOS (Convergent Technologies OS -Unisys)", buffer_size); break; + //case 0xdb: strlcpy(buffer, "KDG Telemetry SCPU boot", buffer_size); break; + case 0xdd: + strlcpy(buffer, "Hidden CTOS Memdump?", buffer_size); + break; + case 0xde: + strlcpy(buffer, "Dell PowerEdge Server utilities (FAT fs)", + buffer_size); + break; + case 0xdf: + strlcpy(buffer, "DG/UX virtual disk manager partition", buffer_size); + break; + //case 0xdf: strlcpy(buffer, "BootIt EMBRM", buffer_size); break; + case 0xe0: + strlcpy(buffer, + "Reserved by STMicroelectronics for a filesystem called ST AVFS.", + buffer_size); + break; + case 0xe1: + strlcpy(buffer, "DOS access or SpeedStor 12-bit FAT extended partition", + buffer_size); + break; + case 0xe3: + strlcpy(buffer, "DOS R/O or SpeedStor", buffer_size); + break; + case 0xe4: + strlcpy(buffer, "SpeedStor 16-bit FAT extended partition < 1024 cyl.", + buffer_size); + break; + case 0xe5: + strlcpy(buffer, + "Tandy DOS with logical sectored FAT (According to Powerquest.)", + buffer_size); + break; + //case 0xe5: strlcpy(buffer, "Reserved", buffer_size); break; + case 0xe6: + strlcpy(buffer, "Reserved", buffer_size); + break; + case 0xeb: + strlcpy(buffer, "BFS (aka BeFS)", buffer_size); + break; + case 0xed: + strlcpy(buffer, "Reserved for Matthias Paul's Sprytix", buffer_size); + break; + case 0xee: + strlcpy(buffer, + "Indication that this legacy MBR is followed by an EFI header", + buffer_size); + break; + case 0xef: + strlcpy(buffer, "Partition that contains an EFI file system", + buffer_size); + break; + case 0xf0: + strlcpy(buffer, "Linux/PA-RISC boot loader", buffer_size); + break; + case 0xf1: + strlcpy(buffer, "SpeedStor", buffer_size); + break; + case 0xf2: + strlcpy(buffer, + "DOS 3.3+ secondary partition (Powerquest writes: Unisys DOS with logical sectored FAT.)", + buffer_size); + break; + case 0xf3: + strlcpy(buffer, + "Reserved (Powerquest writes: Storage Dimensions SpeedStor.)", + buffer_size); + break; + case 0xf4: + strlcpy(buffer, "SpeedStor large partition", buffer_size); + break; + //case 0xf4: strlcpy(buffer, "Prologue single-volume partition", buffer_size); break; + case 0xf5: + strlcpy(buffer, "Prologue multi-volume partition", buffer_size); + break; + case 0xf6: + strlcpy(buffer, + "Reserved (Powerquest writes: Storage Dimensions SpeedStor. )", + buffer_size); + break; + case 0xfa: + strlcpy(buffer, "Bochs", buffer_size); + break; + case 0xfb: + strlcpy(buffer, "VMware File System partition", buffer_size); + break; + case 0xfc: + strlcpy(buffer, "VMware Swap partition", buffer_size); + break; + case 0xfd: + strlcpy(buffer, + "Linux raid partition with autodetect using persistent superblock (Powerquest writes: Reserved for FreeDOS. )", + buffer_size); + break; + case 0xfe: + strlcpy(buffer, "SpeedStor > 1024 cyl.", buffer_size); + break; + //case 0xfe: strlcpy(buffer, "LANstep", buffer_size); break; + //case 0xfe: strlcpy(buffer, "IBM PS/2 IML (Initial Microcode Load) partition, located at the end of the disk.", buffer_size); break; + //case 0xfe: strlcpy(buffer, "Windows NT Disk Administrator hidden partition", buffer_size); break; + //case 0xfe: strlcpy(buffer, "Linux Logical Volume Manager partition (old)", buffer_size); break; + case 0xff: + strlcpy(buffer, "Xenix Bad Block Table ", buffer_size); + break; + default: + strlcpy(buffer, "Unknown", buffer_size); + break; + } +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c b/contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c new file mode 100644 index 0000000..41bb20c --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/mbrs.c @@ -0,0 +1,127 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <disk/common.h> +#include <disk/geom.h> +#include <disk/read.h> +#include <stdlib.h> +#include <string.h> +#include <stdio.h> + +/** + * get_mbr_string - return a string describing the boot code + * @label: first four bytes of the MBR + * @buffer: pre-allocated buffer + * @buffer_size: @buffer size + **/ +void get_mbr_string(const uint32_t label, char *buffer, const int buffer_size) +{ + /* 2 bytes are usually enough to identify the MBR */ + uint16_t s_label = label >> 16; + + switch (s_label) { + case 0x0000: + case 0xfa33: + case 0xfab8: + case 0xfabe: + strlcpy(buffer, "No bootloader", buffer_size - 1); + break; + case 0x0ebe: + strlcpy(buffer, "ThinkPad", buffer_size - 1); + break; + case 0x31c0: + strlcpy(buffer, "Acer 3", buffer_size - 1); + break; + case 0x33c0: + strlcpy(buffer, "Windows", buffer_size - 1); + break; + case 0x33ff: + strlcpy(buffer, "HP/Gateway", buffer_size - 1); + break; + case 0xb800: + strlcpy(buffer, "PloP", buffer_size - 1); + break; + case 0xea05: + strlcpy(buffer, "XOSL", buffer_size - 1); + break; + case 0xea1e: + strlcpy(buffer, "Truecrypt Boot Loader", buffer_size - 1); + break; + case 0xeb04: + strlcpy(buffer, "Solaris", buffer_size - 1); + break; + case 0xeb48: + strlcpy(buffer, "Grub", buffer_size - 1); + break; + case 0xeb4c: + strlcpy(buffer, "Grub2 (v1.96)", buffer_size - 1); + break; + case 0xeb63: + strlcpy(buffer, "Grub2 (v1.97)", buffer_size - 1); + break; + case 0xeb5e: + /* We need more than 2 bytes */ + if (((label >> 8) & 0xff) == 0x00) + strlcpy(buffer, "fbinst", buffer_size - 1); + else if (((label >> 8) & 0xff) == 0x80) + strlcpy(buffer, "Grub4Dos", buffer_size - 1); + else if (((label >> 8) & 0xff) == 0x90) + strlcpy(buffer, "WEE", buffer_size - 1); + else + strlcpy(buffer, "Unknown mbr", buffer_size - 1); + break; + case 0xfa31: + /* We need more than 2 bytes */ + if (((label >> 8) & 0xff) == 0xc9) + strlcpy(buffer, "Master Boot LoaDeR", buffer_size - 1); + else if (((label >> 8) & 0xff) == 0xc0) + strlcpy(buffer, "Syslinux", buffer_size - 1); + else + strlcpy(buffer, "Unknown mbr", buffer_size - 1); + break; + case 0xfaeb: + strlcpy(buffer, "Lilo", buffer_size - 1); + break; + case 0xfc31: + strlcpy(buffer, "Testdisk", buffer_size - 1); + break; + case 0xfc33: + strlcpy(buffer, "GAG", buffer_size - 1); + break; + case 0xfceb: + strlcpy(buffer, "BootIT NG", buffer_size - 1); + break; + default: + strlcpy(buffer, "Unknown mbr", buffer_size - 1); + break; + } + + buffer[buffer_size - 1] = '\0'; +} + +/** + * get_mbr_id - return the first four bytes of the MBR + * @d: driveinfo struct describing the drive + **/ +uint32_t get_mbr_id(const struct driveinfo *d) +{ + char mbr[SECTOR * sizeof(char)]; + + if (read_mbr(d->disk, &mbr) == -1) + return -1; + else { + uint32_t mbr_id; + /* Reverse the opcodes */ + mbr_id = (*(uint8_t *) (mbr + 3)); + mbr_id += (*(uint8_t *) (mbr + 2) << 8); + mbr_id += (*(uint8_t *) (mbr + 1) << 16); + mbr_id += (*(uint8_t *) mbr) << 24; + return mbr_id; + } +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/msdos.c b/contrib/syslinux-4.02/com32/gpllib/disk/msdos.c new file mode 100644 index 0000000..affec43 --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/msdos.c @@ -0,0 +1,162 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * Some parts borrowed from chain.c32: + * + * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved + * Copyright 2009 Intel Corporation; author: H. Peter Anvin + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <stdlib.h> + +#include <disk/common.h> +#include <disk/geom.h> +#include <disk/msdos.h> +#include <disk/partition.h> +#include <disk/read.h> + +static inline int is_extended_partition(struct part_entry *ptab) +{ + return (ptab->ostype == 0x05 || + ptab->ostype == 0x0f || ptab->ostype == 0x85); +} + +static inline int msdos_magic_present(const char *ptab) +{ + return (*(uint16_t *) (ptab + 0x1fe) == 0xaa55); +} + +/** + * process_extended_partition - execute a callback for each partition contained listed in an ebr + * @drive_info: driveinfo struct describing the drive + * @partition_offset: Absolute start (lba) of the extended partition + * @ebr_offset: Relative start (lba) of the current ebr processed within + * the extended partition + * @callback: Callback to execute + * @error: Buffer for I/O errors + * @nb_part_seen: Number of partitions found on the disk so far + **/ +static int process_extended_partition(struct driveinfo *drive_info, + const int partition_offset, + const int ebr_offset, + p_callback callback, int nb_part_seen) +{ + int status = 0; + /* The ebr is located at the first sector of the extended partition */ + char *ebr = malloc(SECTOR * sizeof(char)); + + if (read_sectors(drive_info, ebr, partition_offset + ebr_offset, 1) == -1) + goto abort; + + /* Check msdos magic signature */ + if (!msdos_magic_present(ebr)) + goto abort; + + struct part_entry *ptab = + (struct part_entry *)(ebr + PARTITION_TABLES_OFFSET); + + for (int i = 0; i < 4; i++) { + if (status == -1) + goto abort; + + if (!is_extended_partition(&ptab[i])) { + /* + * This EBR partition table entry points to the + * logical partition associated to that EBR + */ + int logical_partition_start = ebr_offset + ptab[i].start_lba; + + /* Last EBR in the extended partition? */ + if (!logical_partition_start) + continue; + + /* + * Check for garbage: + * 3rd and 4th entries in an EBR should be zero + * Some (malformed) partitioning software still add some + * data partitions there. + */ + if (ptab[i].start_lba <= 0 || ptab[i].length <= 0) + continue; + + nb_part_seen++; + callback(drive_info, + &ptab[i], + partition_offset + logical_partition_start, nb_part_seen); + } else + status = process_extended_partition(drive_info, + partition_offset, + ptab[i].start_lba, + callback, nb_part_seen); + } + + free(ebr); + return 0; + +abort: + free(ebr); + return -1; +} + +/** + * process_mbr - execute a callback for each partition contained in an {m,e}br + * @drive_info: driveinfo struct describing the drive + * @ptab: Pointer to the partition table + * @callback: Callback to execute + **/ +static int process_mbr(struct driveinfo *drive_info, struct part_entry *ptab, + p_callback callback) +{ + int status = 0; + + for (int i = 0; i < 4; i++) { + if (status == -1) + return -1; + + if (ptab[i].start_sect > 0) { + if (is_extended_partition(&ptab[i])) { + callback(drive_info, &ptab[i], ptab[i].start_lba, i + 1); + status = + process_extended_partition(drive_info, ptab[i].start_lba, 0, + callback, 4); + } else + callback(drive_info, &ptab[i], ptab[i].start_lba, i + 1); + } + } + + return 0; +} + +/** + * parse_partition_table - execute a callback for each partition entry + * @d: driveinfo struct describing the drive + * @callback: Callback to execute + * + * The signature of the callback should be the following: + * + * void callback(struct driveinfo *drive_info, + * struct part_entry *ptab, + * int offset_root, + * int nb_part_seen) + **/ +int parse_partition_table(struct driveinfo *d, p_callback callback) +{ + char *mbr = malloc(SECTOR * sizeof(char)); + + if (read_mbr(d->disk, mbr) == -1) + return -1; + else { + /* Check msdos magic signature */ + if (!msdos_magic_present(mbr)) + return -1; + + struct part_entry *ptab = + (struct part_entry *)(mbr + PARTITION_TABLES_OFFSET); + return process_mbr(d, ptab, callback); + } +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/read.c b/contrib/syslinux-4.02/com32/gpllib/disk/read.c new file mode 100644 index 0000000..7a6cc43 --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/read.c @@ -0,0 +1,135 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * Some parts borrowed from chain.c32: + * + * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved + * Copyright 2009 Intel Corporation; author: H. Peter Anvin + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <com32.h> +#include <stdlib.h> +#include <string.h> + +#include <disk/errno_disk.h> +#include <disk/geom.h> +#include <disk/read.h> +#include <disk/util.h> +#include <disk/common.h> + +/* + * TODO: implement file descriptors to cache metadata (geometry, ...) + */ + +/** + * read_mbr - return a pointer to a malloced buffer containing the mbr + * @drive: Drive number + * @buf: Pre-allocated buffer for output + * + * Return the number of sectors read on success or -1 on failure. + * errno_disk contains the error number. + **/ +int read_mbr(int drive, void *buf) +{ + struct driveinfo drive_info; + drive_info.disk = drive; + + /* MBR: lba = 0, 1 sector */ + return read_sectors(&drive_info, buf, 0, 1); +} + +/** + * dev_read - read from a drive + * @drive: Drive number + * @buf: Pre-allocated buffer for output + * @lba: Position to start reading from + * @sectors: Number of sectors to read + * + * High-level routine to read from a hard drive. + * Return the number of sectors read on success or -1 on failure. + * errno_disk contains the error number. + **/ +int dev_read(int drive, void *buf, unsigned int lba, int sectors) +{ + struct driveinfo drive_info; + drive_info.disk = drive; + + return read_sectors(&drive_info, buf, lba, sectors); +} + +/** + * read_sectors - read several sectors from disk + * @drive_info: driveinfo struct describing the disk + * @data: Pre-allocated buffer for output + * @lba: Position to read + * @sectors: Number of sectors to read + * + * Return the number of sectors read on success or -1 on failure. + * errno_disk contains the error number. + **/ +int read_sectors(struct driveinfo *drive_info, void *data, + const unsigned int lba, const int sectors) +{ + com32sys_t inreg, outreg; + struct ebios_dapa *dapa = __com32.cs_bounce; + void *buf = (char *)__com32.cs_bounce + sectors * SECTOR; + char *bufp = data; + + if (get_drive_parameters(drive_info) == -1) + return -1; + + memset(&inreg, 0, sizeof inreg); + + if (drive_info->ebios) { + dapa->len = sizeof(*dapa); + dapa->count = sectors; + dapa->off = OFFS(buf); + dapa->seg = SEG(buf); + dapa->lba = lba; + + inreg.esi.w[0] = OFFS(dapa); + inreg.ds = SEG(dapa); + inreg.edx.b[0] = drive_info->disk; + inreg.eax.b[1] = 0x42; /* Extended read */ + } else { + unsigned int c, h, s; + + if (!drive_info->cbios) { // XXX errno + /* We failed to get the geometry */ + if (lba) + return -1; /* Can only read MBR */ + + s = 1; + h = 0; + c = 0; + } else + lba_to_chs(drive_info, lba, &s, &h, &c); + + // XXX errno + if (s > 63 || h > 256 || c > 1023) + return -1; + + inreg.eax.w[0] = 0x0201; /* Read one sector */ + inreg.ecx.b[1] = c & 0xff; + inreg.ecx.b[0] = s + (c >> 6); + inreg.edx.b[1] = h; + inreg.edx.b[0] = drive_info->disk; + inreg.ebx.w[0] = OFFS(buf); + inreg.es = SEG(buf); + } + + /* Perform the read */ + if (int13_retry(&inreg, &outreg)) { + errno_disk = outreg.eax.b[1]; + return -1; /* Give up */ + } + + memcpy(bufp, buf, sectors * SECTOR); + + return sectors; +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/swsusp.c b/contrib/syslinux-4.02/com32/gpllib/disk/swsusp.c new file mode 100644 index 0000000..ef782fd --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/swsusp.c @@ -0,0 +1,27 @@ +#include <stdlib.h> +#include <string.h> + +#include <disk/swsusp.h> +#include <disk/read.h> +#include <disk/geom.h> + +/** + * swsusp_check - check if a (swap) partition contains the swsusp signature + * @drive_info: driveinfo struct describing the disk containing the partition + * @ptab; Partition table of the partition + **/ +int swsusp_check(struct driveinfo *drive_info, struct part_entry *ptab) +{ + struct swsusp_header header_p; + int offset; + int found; + + /* Read first page of the swap device */ + offset = ptab->start_lba; + if (read_sectors(drive_info, &header_p, offset, PAGE_SIZE / SECTOR) == -1) { + return -1; + } else { + found = !memcmp(SWSUSP_SIG, header_p.sig, 10); + return found; + } +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/util.c b/contrib/syslinux-4.02/com32/gpllib/disk/util.c new file mode 100644 index 0000000..59c0328 --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/util.c @@ -0,0 +1,45 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * Some parts borrowed from chain.c32: + * + * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved + * Copyright 2009 Intel Corporation; author: H. Peter Anvin + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <com32.h> +#include <stdlib.h> +#include <string.h> +#include <disk/geom.h> + +#define MAX_NB_RETRIES 6 + +/** + * int13_retry - int13h with error handling + * @inreg: int13h function parameters + * @outreg: output registers + * + * Call int 13h, but with retry on failure. Especially floppies need this. + **/ +int int13_retry(const com32sys_t * inreg, com32sys_t * outreg) +{ + int retry = MAX_NB_RETRIES; /* Number of retries */ + com32sys_t tmpregs; + + if (!outreg) + outreg = &tmpregs; + + while (retry--) { + __intcall(0x13, inreg, outreg); + if (!(outreg->eflags.l & EFLAGS_CF)) + return 0; /* CF=0 => OK */ + } + + /* If we get here: error */ + return -1; +} diff --git a/contrib/syslinux-4.02/com32/gpllib/disk/write.c b/contrib/syslinux-4.02/com32/gpllib/disk/write.c new file mode 100644 index 0000000..89e530d --- /dev/null +++ b/contrib/syslinux-4.02/com32/gpllib/disk/write.c @@ -0,0 +1,126 @@ +/* ----------------------------------------------------------------------- * + * + * Copyright 2009 Pierre-Alexandre Meyer + * + * Some parts borrowed from chain.c32: + * + * Copyright 2003-2009 H. Peter Anvin - All Rights Reserved + * Copyright 2009 Intel Corporation; author: H. Peter Anvin + * + * This file is part of Syslinux, and is made available under + * the terms of the GNU General Public License version 2. + * + * ----------------------------------------------------------------------- */ + +#include <com32.h> +#include <stdlib.h> +#include <string.h> + +#include <disk/common.h> +#include <disk/errno_disk.h> +#include <disk/read.h> +#include <disk/util.h> +#include <disk/write.h> + +/** + * write_sectors - write several sectors from disk + * @drive_info: driveinfo struct describing the disk + * @lba: Position to write + * @data: Buffer to write + * @size: Size of the buffer (number of sectors) + * + * Return the number of sectors write on success or -1 on failure. + * errno_disk contains the error number. + **/ +int write_sectors(const struct driveinfo *drive_info, const unsigned int lba, + const void *data, const int size) +{ + com32sys_t inreg, outreg; + struct ebios_dapa *dapa = __com32.cs_bounce; + void *buf = (char *)__com32.cs_bounce + size; + + memcpy(buf, data, size); + memset(&inreg, 0, sizeof inreg); + + if (drive_info->ebios) { + dapa->len = sizeof(*dapa); + dapa->count = size; + dapa->off = OFFS(buf); + dapa->seg = SEG(buf); + dapa->lba = lba; + + inreg.esi.w[0] = OFFS(dapa); + inreg.ds = SEG(dapa); + inreg.edx.b[0] = drive_info->disk; + inreg.eax.w[0] = 0x4300; /* Extended write */ + } else { + unsigned int c, h, s; + + if (!drive_info->cbios) { // XXX errno + /* We failed to get the geometry */ + if (lba) + return -1; /* Can only write MBR */ + + s = 1; + h = 0; + c = 0; + } else + lba_to_chs(drive_info, lba, &s, &h, &c); + + // XXX errno + if (s > 63 || h > 256 || c > 1023) + return -1; + + inreg.eax.w[0] = 0x0301; /* Write one sector */ + inreg.ecx.b[1] = c & 0xff; + inreg.ecx.b[0] = s + (c >> 6); + inreg.edx.b[1] = h; + inreg.edx.b[0] = drive_info->disk; + inreg.ebx.w[0] = OFFS(buf); + inreg.es = SEG(buf); + } + + /* Perform the write */ + if (int13_retry(&inreg, &outreg)) { + errno_disk = outreg.eax.b[1]; + return -1; /* Give up */ + } else + return size; +} + +/** + * write_verify_sectors - write several sectors from disk + * @drive_info: driveinfo struct describing the disk + * @lba: Position to write + * @data: Buffer to write + **/ +int write_verify_sector(struct driveinfo *drive_info, + const unsigned int lba, const void *data) +{ + return write_verify_sectors(drive_info, lba, data, SECTOR); +} + +/** + * write_verify_sectors - write several sectors from disk + * @drive_info: driveinfo struct describing the disk + * @lba: Position to write + * @data: Buffer to write + * @size: Size of the buffer (number of sectors) + **/ +int write_verify_sectors(struct driveinfo *drive_info, + const unsigned int lba, + const void *data, const int size) +{ + char *rb = malloc(SECTOR * size * sizeof(char)); + int status; + + if (write_sectors(drive_info, lba, data, size) == -1) + return -1; /* Write failure */ + + if (read_sectors(drive_info, rb, lba, size) == -1) + return -1; /* Readback failure */ + + status = memcmp(data, rb, SECTOR * size); + free(rb); + return status ? -1 : 0; +} |