search for: disk_gpt_header

...4 --- a/com32/chain/partiter.c +++ b/com32/chain/partiter.c @@ -412,34 +412,16 @@ static inline int valid_crc(uint32_t crc, const uint8_t *buf, unsigned int siz) return crc == crc32(crc32(0, NULL, 0), buf, siz); } -static int gpt_check_hdr_crc(const struct disk_info * const diskinfo, struct disk_gpt_header **_gh) +static int valid_crc_hdr(void *buf) { - struct disk_gpt_header *gh = *_gh; - uint64_t lba_alt; - uint32_t hold_crc32; + struct disk_gpt_header *gh = buf; + uint32_t crc = gh->chksum; + int valid; - hold_crc32 = gh->chksum; gh->chksum = 0; - if (!vali...

...er->dos.disk_sig = mbr->disk_sig; - - iter->type = typedos; - return 0; -bail: - pi_dtor_(iter); - return -1; -} - -/* pi_gpt_ctor() - GPT iterator specific initialization */ -static int pi_gpt_ctor(struct part_iter *iter, - const struct disk_info *di, int flags, - const struct disk_gpt_header *gpth, const struct disk_gpt_part_entry *gptl -) -{ - uint64_t siz; - - if (pi_ctor(iter, di, flags)) - return -1; - - siz = (uint64_t)gpth->part_count * gpth->part_size; - - if (!(iter->data = malloc((size_t)siz))) { - critm(); - goto bail; - } - - memcpy(iter->data,...

This small set fixes few bugs, improves gpt handling (under buggy conditions) and implements strict flag with more fine grained control which should fix issues with sanity checks against disk sizes. If this set is allright I'd want to do what I mentioned in older discussion with Ady - backport missing patches from 6.x to 5.x and 4.x so all versions have up to date chain version. Michal

1) code split and move Iterator related functionality is yanked from chain.c and moved to iterator.{c,h}. Both are moved to com32/chain and this way chain.c is ready for further splitting. Alternatively, partiter could be moved to com32/lib at any time in the future. It's potentially useful for other modules (e.g. if someone wanted to code partition dumper or editor). 2) Iterator updates

...er->dos.disk_sig = mbr->disk_sig; - - iter->type = typedos; - return 0; -bail: - pi_dtor_(iter); - return -1; -} - -/* pi_gpt_ctor() - GPT iterator specific initialization */ -static int pi_gpt_ctor(struct part_iter *iter, - const struct disk_info *di, int flags, - const struct disk_gpt_header *gpth, const struct disk_gpt_part_entry *gptl -) -{ - uint64_t siz; - - if (pi_ctor(iter, di, flags)) - return -1; - - siz = (uint64_t)gpth->part_count * gpth->part_size; - - if (!(iter->data = malloc((size_t)siz))) { - critm(); - goto bail; - } - - memcpy(iter->data,...

So last week I was wondering if XFS was still working -- even with its last on-disk structure changes -- and it _suprisingly_ worked as expected. Right, now I can finally get rid of GRUB and use Syslinux to boot my Linux on EFI from a rootfs with xfs. Shit, I have two partitions (the first one being the required ESP) so there is no way to access the other partitions since because Syslinux does not

...EBIOS_WRITE_CODE = 0x43, /* Extended write */ + CHS_READ_CODE = 0x02, + CHS_WRITE_CODE = 0x03, +}; + struct disk_ebios_dapa { uint16_t len; uint16_t count; @@ -177,4 +190,9 @@ extern void disk_gpt_part_dump(const struct disk_gpt_part_entry *const gpt_part); extern void disk_gpt_header_dump(const struct disk_gpt_header *const gpt); +static inline void *ebios_disk_op(const struct disk_info *const, + com32sys_t *, uint64_t, uint8_t); +static inline void *chs_disk_op(const struct disk_info *const, + com32sys_t *, uint64_t, uint8_t); + #endif /* _SYSLINUX_DISK_H */ diff...

...ODE = 0x42, /* Extended read */ + EBIOS_WRITE_CODE = 0x43, /* Extended write */ + CHS_READ_CODE = 0x02, + CHS_WRITE_CODE = 0x03, }; struct disk_ebios_dapa { @@ -177,4 +193,9 @@ extern void disk_gpt_part_dump(const struct disk_gpt_part_entry *const gpt_part); extern void disk_gpt_header_dump(const struct disk_gpt_header *const gpt); +static void *ebios_disk_op(const struct disk_info *const, + com32sys_t *, uint64_t, uint8_t); +static void *chs_disk_op(const struct disk_info *const, + com32sys_t *, uint64_t, uint8_t); + #endif /* _SYSLINUX_DISK_H */ diff --git a/com32/...

...pa { uint16_t len; uint16_t count; @@ -87,6 +97,8 @@ struct disk_ebios_eparam { uint8_t checksum; } __attribute__ ((packed)); +#endif + /** * CHS (cylinder, head, sector) value extraction macros. * Taken from WinVBlock. None expand to an lvalue. @@ -169,19 +181,25 @@ struct disk_gpt_header { } __attribute__ ((packed)); static const char disk_gpt_sig_magic[] = "EFI PART"; +/* common.c */ +extern void disk_dos_part_dump(const struct disk_dos_part_entry *const part); +extern void guid_to_str(char *buf, const struct guid *const id); +extern int str_to_guid(const char *buf,...

...4 "\n" + "GPT part. attribs ____ : 0x%.16" PRIx64 "\n" "GPT part. name _______ : '", gpt_part->lba_first, gpt_part->lba_last, gpt_part->attribs); for (i = 0; i < sizeof(gpt_part->name); i++) { @@ -559,11 +560,11 @@ void disk_gpt_header_dump(const struct disk_gpt_header *const gpt) "GPT header size ______ : 0x%.8x\n" "GPT header checksum __ : 0x%.8x\n" "GPT reserved _________ : '%4.4s'\n" - "GPT LBA current ______ : 0x%.16llx\n" - "GPT LBA alternative __ : 0...

This is a bit updated set of chain.c32 changes that simplifies a few things (and in partiter part), fixes few minor issues and adds a few new features. Details are in the following commits, below is the summary and pull details at the end. Shao - any chance to peek over them ? Most of those are relatively simple changes and well tested, though of course something might have slipped my attention.

Hello, the following patches should get multidisk access working. The syntax accepted is the following: (hdx,y)/path/to/file where x is the disk number and start at 0 and the y is the partition number starting at 1. So (hd0,1) is the first partition of the first disk. the other accepted syntax is using MBR's 32 bits disk signature so for example: (mbr:0x12345678,2)/foo/bar would address