From 6e536dc8ad96e3ca1ae878a4250ec87d6bdccb71 Mon Sep 17 00:00:00 2001 From: Vladimir 'phcoder' Serbinenko Date: Mon, 24 Oct 2011 16:16:28 +0200 Subject: [PATCH] Support triple indirect on minix2 and minix3. * grub-core/fs/minix.c (grub_minix_inode) [MODE_MINIX2 || MODE_MINIX3]: Declare triple_indir_zone. (grub_minix_get_file_block) [MODE_MINIX2 || MODE_MINIX3]: Handle triple indirect. --- ChangeLog | 9 +++++++++ grub-core/fs/minix.c | 16 +++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/ChangeLog b/ChangeLog index 9065162fe..12117d6a0 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2011-10-24 Vladimir Serbinenko + + Support triple indirect on minix2 and minix3. + + * grub-core/fs/minix.c (grub_minix_inode) [MODE_MINIX2 || MODE_MINIX3]: + Declare triple_indir_zone. + (grub_minix_get_file_block) [MODE_MINIX2 || MODE_MINIX3]: Handle triple + indirect. + 2011-10-24 Vladimir Serbinenko Minix FS fixes. diff --git a/grub-core/fs/minix.c b/grub-core/fs/minix.c index 1db2883cd..43785b657 100644 --- a/grub-core/fs/minix.c +++ b/grub-core/fs/minix.c @@ -132,7 +132,7 @@ struct grub_minix_inode grub_uint32_t dir_zones[7]; grub_uint32_t indir_zone; grub_uint32_t double_indir_zone; - grub_uint32_t unused; + grub_uint32_t triple_indir_zone; }; #else struct grub_minix_inode @@ -213,6 +213,20 @@ grub_minix_get_file_block (struct grub_minix_data *data, unsigned int blk) return indir; } +#if defined (MODE_MINIX3) || defined (MODE_MINIX2) + blk -= block_per_zone * block_per_zone; + if (blk < ((grub_uint64_t) block_per_zone * (grub_uint64_t) block_per_zone + * (grub_uint64_t) block_per_zone)) + { + indir = grub_get_indir (grub_minix_le_to_cpu_n (data->inode.triple_indir_zone), + (blk / block_per_zone) / block_per_zone); + indir = grub_get_indir (indir, (blk / block_per_zone) % block_per_zone); + indir = grub_get_indir (indir, blk % block_per_zone); + + return indir; + } +#endif + /* This should never happen. */ grub_error (GRUB_ERR_OUT_OF_RANGE, "file bigger than maximum size");