diff --git a/Makefile.util.def b/Makefile.util.def index c4872c7c3..05c4404a2 100644 --- a/Makefile.util.def +++ b/Makefile.util.def @@ -52,6 +52,7 @@ library = { common = grub-core/fs/iso9660.c; common = grub-core/fs/jfs.c; common = grub-core/fs/minix.c; + common = grub-core/fs/minix2.c; common = grub-core/fs/nilfs2.c; common = grub-core/fs/ntfs.c; common = grub-core/fs/ntfscomp.c; diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def index 59d99a326..04525bbab 100644 --- a/grub-core/Makefile.core.def +++ b/grub-core/Makefile.core.def @@ -880,6 +880,11 @@ module = { common = fs/minix.c; }; +module = { + name = minix2; + common = fs/minix2.c; +}; + module = { name = nilfs2; common = fs/nilfs2.c; diff --git a/grub-core/fs/minix.c b/grub-core/fs/minix.c index a856e38c4..aa5b9a0c9 100644 --- a/grub-core/fs/minix.c +++ b/grub-core/fs/minix.c @@ -25,10 +25,13 @@ #include #include +#ifdef MODE_MINIX2 +#define GRUB_MINIX_MAGIC 0x2468 +#define GRUB_MINIX_MAGIC_30 0x2478 +#else #define GRUB_MINIX_MAGIC 0x137F -#define GRUB_MINIX2_MAGIC 0x2468 #define GRUB_MINIX_MAGIC_30 0x138F -#define GRUB_MINIX2_MAGIC_30 0x2478 +#endif #define GRUB_MINIX_BSIZE 1024U #define GRUB_MINIX_LOG2_BSIZE 1 #define GRUB_MINIX_ROOT_INODE 1 @@ -38,20 +41,25 @@ #define GRUB_MINIX_IFDIR 0040000U #define GRUB_MINIX_IFLNK 0120000U -#define GRUB_MINIX_INODE(data,field) (data->version == 1 ? \ - data->inode. field : data->inode2. field) -#define GRUB_MINIX_INODE_ENDIAN(data,field,bits1,bits2) (data->version == 1 ? \ - grub_le_to_cpu##bits1 (data->inode.field) : \ - grub_le_to_cpu##bits2 (data->inode2.field)) -#define GRUB_MINIX_INODE_SIZE(data) GRUB_MINIX_INODE_ENDIAN (data,size,16,32) -#define GRUB_MINIX_INODE_MODE(data) GRUB_MINIX_INODE_ENDIAN (data,mode,16,16) -#define GRUB_MINIX_INODE_DIR_ZONES(data,blk) GRUB_MINIX_INODE_ENDIAN \ - (data,dir_zones[blk],16,32) -#define GRUB_MINIX_INODE_INDIR_ZONE(data) \ - GRUB_MINIX_INODE_ENDIAN (data,indir_zone,16,32) -#define GRUB_MINIX_INODE_DINDIR_ZONE(data) \ - GRUB_MINIX_INODE_ENDIAN (data,double_indir_zone,16,32) -#define GRUB_MINIX_INODE_BLKSZ(data) (data->version == 1 ? 2 : 4) +#ifdef MODE_MINIX2 +typedef grub_uint32_t grub_minix_uintn_t; +#define grub_minix_le_to_cpu_n grub_le_to_cpu32 +#else +typedef grub_uint16_t grub_minix_uintn_t; +#define grub_minix_le_to_cpu_n grub_le_to_cpu16 +#endif + +#define GRUB_MINIX_INODE_BLKSZ(data) sizeof (grub_minix_uintn_t) + +#define GRUB_MINIX_INODE_SIZE(data) (grub_minix_le_to_cpu_n (data->inode.size)) +#define GRUB_MINIX_INODE_MODE(data) (grub_le_to_cpu16 (data->inode.mode)) +#define GRUB_MINIX_INODE_DIR_ZONES(data,blk) (grub_minix_le_to_cpu_n \ + (data->inode.dir_zones[blk])) +#define GRUB_MINIX_INODE_INDIR_ZONE(data) (grub_minix_le_to_cpu_n \ + (data->inode.indir_zone)) +#define GRUB_MINIX_INODE_DINDIR_ZONE(data) (grub_minix_le_to_cpu_n \ + (data->inode.double_indir_zone)) + #define GRUB_MINIX_LOG2_ZONESZ (GRUB_MINIX_LOG2_BSIZE \ + grub_le_to_cpu16 (sblock->log2_zone_size)) #define GRUB_MINIX_ZONESZ (GRUB_MINIX_BSIZE \ @@ -69,6 +77,7 @@ struct grub_minix_sblock grub_uint16_t magic; }; +#ifndef MODE_MINIX2 struct grub_minix_inode { grub_uint16_t mode; @@ -82,7 +91,9 @@ struct grub_minix_inode grub_uint16_t double_indir_zone; }; -struct grub_minix2_inode +#else + +struct grub_minix_inode { grub_uint16_t mode; grub_uint16_t nlinks; @@ -99,16 +110,16 @@ struct grub_minix2_inode }; +#endif + /* Information about a "mounted" minix filesystem. */ struct grub_minix_data { struct grub_minix_sblock sblock; struct grub_minix_inode inode; - struct grub_minix2_inode inode2; int ino; int linknest; grub_disk_t disk; - int version; int filename_size; }; @@ -128,24 +139,12 @@ grub_minix_get_file_block (struct grub_minix_data *data, unsigned int blk) /* Read the block pointer in ZONE, on the offset NUM. */ int grub_get_indir (int zone, int num) { - if (data->version == 1) - { - grub_uint16_t indir16; - grub_disk_read (data->disk, - zone << GRUB_MINIX_LOG2_ZONESZ, - sizeof (grub_uint16_t) * num, - sizeof (grub_uint16_t), (char *) &indir16); - return grub_le_to_cpu16 (indir16); - } - else - { - grub_uint32_t indir32; - grub_disk_read (data->disk, - zone << GRUB_MINIX_LOG2_ZONESZ, - sizeof (grub_uint32_t) * num, - sizeof (grub_uint32_t), (char *) &indir32); - return grub_le_to_cpu32 (indir32); - } + grub_minix_uintn_t indirn; + grub_disk_read (data->disk, + zone << GRUB_MINIX_LOG2_ZONESZ, + sizeof (grub_minix_uintn_t) * num, + sizeof (grub_minix_uintn_t), (char *) &indirn); + return grub_minix_le_to_cpu_n (indirn); } /* Direct block. */ @@ -259,27 +258,13 @@ grub_minix_read_inode (struct grub_minix_data *data, int ino) + grub_le_to_cpu16 (sblock->zone_bmap_size)) << GRUB_MINIX_LOG2_BSIZE); - if (data->version == 1) - { - block += ino / (GRUB_DISK_SECTOR_SIZE / sizeof (struct grub_minix_inode)); - int offs = (ino % (GRUB_DISK_SECTOR_SIZE - / sizeof (struct grub_minix_inode)) - * sizeof (struct grub_minix_inode)); - - grub_disk_read (data->disk, block, offs, - sizeof (struct grub_minix_inode), &data->inode); - } - else - { - block += ino / (GRUB_DISK_SECTOR_SIZE - / sizeof (struct grub_minix2_inode)); - int offs = (ino - % (GRUB_DISK_SECTOR_SIZE / sizeof (struct grub_minix2_inode)) - * sizeof (struct grub_minix2_inode)); - - grub_disk_read (data->disk, block, offs, - sizeof (struct grub_minix2_inode),&data->inode2); - } + block += ino / (GRUB_DISK_SECTOR_SIZE / sizeof (struct grub_minix_inode)); + int offs = (ino % (GRUB_DISK_SECTOR_SIZE + / sizeof (struct grub_minix_inode)) + * sizeof (struct grub_minix_inode)); + + grub_disk_read (data->disk, block, offs, + sizeof (struct grub_minix_inode), &data->inode); return GRUB_ERR_NONE; } @@ -424,25 +409,9 @@ grub_minix_mount (grub_disk_t disk) goto fail; if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX_MAGIC) - { - data->version = 1; - data->filename_size = 14; - } - else if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX2_MAGIC) - { - data->version = 2; - data->filename_size = 14; - } + data->filename_size = 14; else if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX_MAGIC_30) - { - data->version = 1; - data->filename_size = 30; - } - else if (grub_le_to_cpu16 (data->sblock.magic) == GRUB_MINIX2_MAGIC_30) - { - data->version = 2; - data->filename_size = 30; - } + data->filename_size = 30; else goto fail; @@ -453,7 +422,11 @@ grub_minix_mount (grub_disk_t disk) fail: grub_free (data); +#ifdef MODE_MINIX2 + grub_error (GRUB_ERR_BAD_FS, "not a minix2 filesystem"); +#else grub_error (GRUB_ERR_BAD_FS, "not a minix filesystem"); +#endif return 0; } @@ -583,32 +556,36 @@ grub_minix_close (grub_file_t file) } -static grub_err_t -grub_minix_label (grub_device_t device __attribute ((unused)), - char **label __attribute ((unused))) -{ - return GRUB_ERR_NONE; -} - static struct grub_fs grub_minix_fs = { +#ifdef MODE_MINIX2 + .name = "minix2", +#else .name = "minix", +#endif .dir = grub_minix_dir, .open = grub_minix_open, .read = grub_minix_read, .close = grub_minix_close, - .label = grub_minix_label, .next = 0 }; +#ifdef MODE_MINIX2 +GRUB_MOD_INIT(minix2) +#else GRUB_MOD_INIT(minix) +#endif { grub_fs_register (&grub_minix_fs); my_mod = mod; } +#ifdef MODE_MINIX2 +GRUB_MOD_FINI(minix2) +#else GRUB_MOD_FINI(minix) +#endif { grub_fs_unregister (&grub_minix_fs); } diff --git a/grub-core/fs/minix2.c b/grub-core/fs/minix2.c new file mode 100644 index 000000000..0fcd4b139 --- /dev/null +++ b/grub-core/fs/minix2.c @@ -0,0 +1,2 @@ +#define MODE_MINIX2 1 +#include "minix.c"