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Accepting request 238594 from Base:System

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Support for XFS V5 superblock (forwarded request 238591 from jankara)

OBS-URL: https://build.opensuse.org/request/show/238594
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/grub2?expand=0&rev=92
This commit is contained in:
Stephan Kulow 2014-06-26 05:58:00 +00:00 committed by Git OBS Bridge
commit d33b87421e
6 changed files with 690 additions and 0 deletions
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76
grub2-xfs-Add-helper-for-inode-size.patch Normal file
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@ -0,0 +1,76 @@
From 34231b28cbb6b2e10d7668c5b6d2432e8563bd1d Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 5 Jun 2014 20:56:21 +0200
Subject: [PATCH 1/4] xfs: Add helper for inode size
Signed-off-by: Jan Kara <jack@suse.cz>
---
grub-core/fs/xfs.c | 17 +++++++++++------
1 file changed, 11 insertions(+), 6 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 16ffd3f1ebd9..a2fc942707c1 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -255,6 +255,11 @@ grub_xfs_inode_offset (struct grub_xfs_data *data,
data->sblock.log2_inode);
}
+static inline int
+grub_xfs_inode_size(struct grub_xfs_data *data)
+{
+ return 1 << data->sblock.log2_inode;
+}
static grub_err_t
grub_xfs_read_inode (struct grub_xfs_data *data, grub_uint64_t ino,
@@ -264,8 +269,8 @@ grub_xfs_read_inode (struct grub_xfs_data *data, grub_uint64_t ino,
int offset = grub_xfs_inode_offset (data, ino);
/* Read the inode. */
- if (grub_disk_read (data->disk, block, offset,
- 1 << data->sblock.log2_inode, inode))
+ if (grub_disk_read (data->disk, block, offset, grub_xfs_inode_size(data),
+ inode))
return grub_errno;
if (grub_strncmp ((char *) inode->magic, "IN", 2))
@@ -297,7 +302,7 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
if (node->inode.fork_offset)
recoffset = (node->inode.fork_offset - 1) / 2;
else
- recoffset = ((1 << node->data->sblock.log2_inode)
+ recoffset = (grub_xfs_inode_size(node->data)
- ((char *) &node->inode.data.btree.keys
- (char *) &node->inode))
/ (2 * sizeof (grub_uint64_t));
@@ -458,7 +463,7 @@ static int iterate_dir_call_hook (grub_uint64_t ino, const char *filename,
fdiro = grub_malloc (sizeof (struct grub_fshelp_node)
- sizeof (struct grub_xfs_inode)
- + (1 << ctx->diro->data->sblock.log2_inode) + 1);
+ + grub_xfs_inode_size(ctx->diro->data) + 1);
if (!fdiro)
{
grub_print_error ();
@@ -684,7 +689,7 @@ grub_xfs_mount (grub_disk_t disk)
data = grub_realloc (data,
sizeof (struct grub_xfs_data)
- sizeof (struct grub_xfs_inode)
- + (1 << data->sblock.log2_inode) + 1);
+ + grub_xfs_inode_size(data) + 1);
if (! data)
goto fail;
@@ -802,7 +807,7 @@ grub_xfs_open (struct grub_file *file, const char *name)
grub_memcpy (&data->diropen, fdiro,
sizeof (struct grub_fshelp_node)
- sizeof (struct grub_xfs_inode)
- + (1 << data->sblock.log2_inode));
+ + grub_xfs_inode_size(data));
grub_free (fdiro);
}
--
1.8.1.4

82
grub2-xfs-Convert-inode-numbers-to-cpu-endianity-immediate.patch Normal file
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@ -0,0 +1,82 @@
From 57ae4073cc28fa74014a62aca397a40ce1f73763 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Thu, 12 Jun 2014 11:01:11 +0200
Subject: [PATCH 3/4] xfs: Convert inode numbers to cpu endianity immediately
after reading
Currently XFS driver converted inode numbers to native endianity only
when using them to compute inode position. Although this works, it is
somewhat confusing. So convert inode numbers when reading them from disk
structures as every other field.
Signed-off-by: Jan Kara <jack@suse.cz>
---
grub-core/fs/xfs.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index ef3bc787e968..7e247a32df5c 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -180,14 +180,14 @@ static inline grub_uint64_t
GRUB_XFS_INO_INOINAG (struct grub_xfs_data *data,
grub_uint64_t ino)
{
- return (grub_be_to_cpu64 (ino) & ((1LL << GRUB_XFS_INO_AGBITS (data)) - 1));
+ return (ino & ((1LL << GRUB_XFS_INO_AGBITS (data)) - 1));
}
static inline grub_uint64_t
GRUB_XFS_INO_AG (struct grub_xfs_data *data,
grub_uint64_t ino)
{
- return (grub_be_to_cpu64 (ino) >> GRUB_XFS_INO_AGBITS (data));
+ return (ino >> GRUB_XFS_INO_AGBITS (data));
}
static inline grub_disk_addr_t
@@ -511,13 +511,12 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
if (smallino)
{
parent = grub_be_to_cpu32 (diro->inode.data.dir.dirhead.parent.i4);
- parent = grub_cpu_to_be64 (parent);
/* The header is a bit smaller than usual. */
de = (struct grub_xfs_dir_entry *) ((char *) de - 4);
}
else
{
- parent = diro->inode.data.dir.dirhead.parent.i8;
+ parent = grub_be_to_cpu64(diro->inode.data.dir.dirhead.parent.i8);
}
/* Synthesize the direntries for `.' and `..'. */
@@ -550,7 +549,6 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
| (((grub_uint64_t) inopos[5]) << 16)
| (((grub_uint64_t) inopos[6]) << 8)
| (((grub_uint64_t) inopos[7]) << 0);
- ino = grub_cpu_to_be64 (ino);
c = de->name[de->len];
de->name[de->len] = '\0';
@@ -632,7 +630,8 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
is not used by GRUB. So it can be overwritten. */
filename[direntry->len] = '\0';
- if (iterate_dir_call_hook (direntry->inode, filename, &ctx))
+ if (iterate_dir_call_hook (grub_be_to_cpu64(direntry->inode),
+ filename, &ctx))
{
grub_free (dirblock);
return 1;
@@ -694,7 +693,7 @@ grub_xfs_mount (grub_disk_t disk)
goto fail;
data->diropen.data = data;
- data->diropen.ino = data->sblock.rootino;
+ data->diropen.ino = grub_be_to_cpu64(data->sblock.rootino);
data->diropen.inode_read = 1;
data->bsize = grub_be_to_cpu32 (data->sblock.bsize);
data->agsize = grub_be_to_cpu32 (data->sblock.agsize);
--
1.8.1.4

32
grub2-xfs-Fix-termination-loop-for-directory-iteration.patch Normal file
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@ -0,0 +1,32 @@
From a7d584c005bde09bb86475a79d714215b3480821 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Wed, 11 Jun 2014 18:36:59 +0200
Subject: [PATCH 2/4] xfs: Fix termination loop for directory iteration
Directory iteration used wrong position (sizeof wrong structure) for
termination of iteration inside a directory block. Luckily the position
ended up being wrong by just 1 byte and directory entries are larger so
things worked out fine in practice. But fix the problem anyway.
Signed-off-by: Jan Kara <jack@suse.cz>
---
grub-core/fs/xfs.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index a2fc942707c1..ef3bc787e968 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -608,8 +608,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
- grub_be_to_cpu32 (tail->leaf_stale));
/* Iterate over all entries within this block. */
- while (pos < (dirblk_size
- - (int) sizeof (struct grub_xfs_dir2_entry)))
+ while (pos < tail_start)
{
struct grub_xfs_dir2_entry *direntry;
grub_uint8_t *freetag;
--
1.8.1.4

481
grub2-xfs-V5-filesystem-format-support.patch Normal file
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@ -0,0 +1,481 @@
From 2f725e644d8ccf001a4dccddc8abb2c9479352a7 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Wed, 11 Jun 2014 18:36:01 +0200
Subject: [PATCH] xfs: V5 filesystem format support
Signed-off-by: Jan Kara <jack@suse.cz>
---
grub-core/fs/xfs.c | 245 +++++++++++++++++++++++++++++++++++++----------------
1 file changed, 173 insertions(+), 72 deletions(-)
diff --git a/grub-core/fs/xfs.c b/grub-core/fs/xfs.c
index 7e247a32df5c..3b1d8994067f 100644
--- a/grub-core/fs/xfs.c
+++ b/grub-core/fs/xfs.c
@@ -34,6 +34,15 @@ GRUB_MOD_LICENSE ("GPLv3+");
#define XFS_INODE_FORMAT_EXT 2
#define XFS_INODE_FORMAT_BTREE 3
+/* Superblock version field flags */
+#define XFS_SB_VERSION_NUMBITS 0x000f
+#define XFS_SB_VERSION_MOREBITSBIT 0x8000
+
+/* features2 field flags */
+#define XFS_SB_VERSION2_FTYPE 0x00000200 /* inode type in dir */
+
+/* incompat feature flags */
+#define XFS_SB_FEAT_INCOMPAT_FTYPE (1 << 0) /* filetype in dirent */
struct grub_xfs_sblock
{
@@ -45,7 +54,9 @@ struct grub_xfs_sblock
grub_uint64_t rootino;
grub_uint8_t unused3[20];
grub_uint32_t agsize;
- grub_uint8_t unused4[20];
+ grub_uint8_t unused4[12];
+ grub_uint16_t version;
+ grub_uint8_t unused5[6];
grub_uint8_t label[12];
grub_uint8_t log2_bsize;
grub_uint8_t log2_sect;
@@ -54,12 +65,19 @@ struct grub_xfs_sblock
grub_uint8_t log2_agblk;
grub_uint8_t unused6[67];
grub_uint8_t log2_dirblk;
+ grub_uint8_t unused7[7];
+ grub_uint32_t features2;
+ grub_uint8_t unused8[4];
+ grub_uint32_t sb_features_compat;
+ grub_uint32_t sb_features_ro_compat;
+ grub_uint32_t sb_features_incompat;
+ grub_uint32_t sb_features_log_incompat;
} GRUB_PACKED;
struct grub_xfs_dir_header
{
grub_uint8_t count;
- grub_uint8_t smallino;
+ grub_uint8_t largeino;
union
{
grub_uint32_t i4;
@@ -67,14 +85,16 @@ struct grub_xfs_dir_header
} GRUB_PACKED parent;
} GRUB_PACKED;
+/* Structure for directory entry inlined in the inode */
struct grub_xfs_dir_entry
{
grub_uint8_t len;
grub_uint16_t offset;
char name[1];
- /* Inode number follows, 32 bits. */
+ /* Inode number follows, 32 / 64 bits. */
} GRUB_PACKED;
+/* Structure for directory entry in a block */
struct grub_xfs_dir2_entry
{
grub_uint64_t inode;
@@ -90,7 +110,8 @@ struct grub_xfs_btree_node
grub_uint16_t numrecs;
grub_uint64_t left;
grub_uint64_t right;
- grub_uint64_t keys[1];
+ /* In V5 here follow crc, uuid, etc. */
+ /* Then follow keys and block pointers */
} GRUB_PACKED;
struct grub_xfs_btree_root
@@ -123,17 +144,6 @@ struct grub_xfs_inode
grub_uint16_t unused3;
grub_uint8_t fork_offset;
grub_uint8_t unused4[17];
- union
- {
- char raw[156];
- struct dir
- {
- struct grub_xfs_dir_header dirhead;
- struct grub_xfs_dir_entry direntry[1];
- } dir;
- grub_xfs_extent extents[XFS_INODE_EXTENTS];
- struct grub_xfs_btree_root btree;
- } GRUB_PACKED data;
} GRUB_PACKED;
struct grub_xfs_dirblock_tail
@@ -157,6 +167,8 @@ struct grub_xfs_data
int pos;
int bsize;
grub_uint32_t agsize;
+ unsigned int hasftype:1;
+ unsigned int hascrc:1;
struct grub_fshelp_node diropen;
};
@@ -164,6 +176,24 @@ static grub_dl_t my_mod;
+static int grub_xfs_sb_hascrc(struct grub_xfs_data *data)
+{
+ return (grub_be_to_cpu16(data->sblock.version) & XFS_SB_VERSION_NUMBITS) == 5;
+}
+
+static int grub_xfs_sb_hasftype(struct grub_xfs_data *data)
+{
+ grub_uint32_t version = grub_be_to_cpu16(data->sblock.version);
+
+ if ((version & XFS_SB_VERSION_NUMBITS) == 5 &&
+ grub_be_to_cpu32(data->sblock.sb_features_incompat) & XFS_SB_FEAT_INCOMPAT_FTYPE)
+ return 1;
+ if (version & XFS_SB_VERSION_MOREBITSBIT &&
+ grub_be_to_cpu32(data->sblock.features2) & XFS_SB_VERSION2_FTYPE)
+ return 1;
+ return 0;
+}
+
/* Filetype information as used in inodes. */
#define FILETYPE_INO_MASK 0170000
#define FILETYPE_INO_REG 0100000
@@ -219,18 +249,6 @@ GRUB_XFS_EXTENT_SIZE (grub_xfs_extent *exts, int ex)
return (grub_be_to_cpu32 (exts[ex][3]) & ((1 << 21) - 1));
}
-static inline int
-GRUB_XFS_ROUND_TO_DIRENT (int pos)
-{
- return ((((pos) + 8 - 1) / 8) * 8);
-}
-
-static inline int
-GRUB_XFS_NEXT_DIRENT (int pos, int len)
-{
- return (pos) + GRUB_XFS_ROUND_TO_DIRENT (8 + 1 + len + 2);
-}
-
static inline grub_uint64_t
grub_xfs_inode_block (struct grub_xfs_data *data,
@@ -261,6 +279,92 @@ grub_xfs_inode_size(struct grub_xfs_data *data)
return 1 << data->sblock.log2_inode;
}
+static void *
+grub_xfs_inode_data(struct grub_xfs_inode *inode)
+{
+ if (inode->version <= 2)
+ return ((char *)inode) + 100;
+ return ((char *)inode) + 176;
+}
+
+static struct grub_xfs_dir_entry *
+grub_xfs_inline_de(struct grub_xfs_dir_header *head)
+{
+ /*
+ * With small inode numbers the header is 4 bytes smaller because of
+ * smaller parent pointer
+ */
+ return (void *)(((char *)head) + sizeof(struct grub_xfs_dir_header) -
+ (head->largeino ? 0 : sizeof(grub_uint32_t)));
+}
+
+static grub_uint8_t *
+grub_xfs_inline_de_inopos(struct grub_xfs_data *data,
+ struct grub_xfs_dir_entry *de)
+{
+ return ((grub_uint8_t *)(de + 1)) + de->len - 1 +
+ (data->hasftype ? 1 : 0);
+}
+
+static struct grub_xfs_dir_entry *
+grub_xfs_inline_next_de(struct grub_xfs_data *data,
+ struct grub_xfs_dir_header *head,
+ struct grub_xfs_dir_entry *de)
+{
+ char *p = (char *)de + sizeof(struct grub_xfs_dir_entry) - 1 + de->len;
+
+ p += head->largeino ? sizeof(grub_uint64_t) : sizeof(grub_uint32_t);
+ if (data->hasftype)
+ p++;
+
+ return (struct grub_xfs_dir_entry *)p;
+}
+
+static struct grub_xfs_dirblock_tail *
+grub_xfs_dir_tail(struct grub_xfs_data *data, void *dirblock)
+{
+ int dirblksize = 1 << (data->sblock.log2_bsize + data->sblock.log2_dirblk);
+
+ return (struct grub_xfs_dirblock_tail *)
+ ((char *)dirblock + dirblksize - sizeof (struct grub_xfs_dirblock_tail));
+}
+
+static struct grub_xfs_dir2_entry *
+grub_xfs_first_de(struct grub_xfs_data *data, void *dirblock)
+{
+ if (data->hascrc)
+ return (struct grub_xfs_dir2_entry *)((char *)dirblock + 64);
+ return (struct grub_xfs_dir2_entry *)((char *)dirblock + 16);
+}
+
+static inline int
+grub_xfs_round_dirent_size (int len)
+{
+ return (len + 7) & ~7;
+}
+
+static struct grub_xfs_dir2_entry *
+grub_xfs_next_de(struct grub_xfs_data *data, struct grub_xfs_dir2_entry *de)
+{
+ int size = sizeof (struct grub_xfs_dir2_entry) + de->len + 2 /* Tag */;
+
+ if (data->hasftype)
+ size++; /* File type */
+ return (struct grub_xfs_dir2_entry *)
+ (((char *)de) + grub_xfs_round_dirent_size (size));
+}
+
+static grub_uint64_t *
+grub_xfs_btree_keys(struct grub_xfs_data *data,
+ struct grub_xfs_btree_node *leaf)
+{
+ char *p = (char *)(leaf + 1);
+
+ if (data->hascrc)
+ p += 48; /* crc, uuid, ... */
+ return (grub_uint64_t *)p;
+}
+
static grub_err_t
grub_xfs_read_inode (struct grub_xfs_data *data, grub_uint64_t ino,
struct grub_xfs_inode *inode)
@@ -268,6 +372,9 @@ grub_xfs_read_inode (struct grub_xfs_data *data, grub_uint64_t ino,
grub_uint64_t block = grub_xfs_inode_block (data, ino);
int offset = grub_xfs_inode_offset (data, ino);
+ grub_dprintf("xfs", "Reading inode (%llu) - %llu, %d\n",
+ (unsigned long long) ino,
+ (unsigned long long) block, offset);
/* Read the inode. */
if (grub_disk_read (data->disk, block, offset, grub_xfs_inode_size(data),
inode))
@@ -290,6 +397,7 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
if (node->inode.format == XFS_INODE_FORMAT_BTREE)
{
+ struct grub_xfs_btree_root *root;
const grub_uint64_t *keys;
int recoffset;
@@ -297,15 +405,15 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
if (leaf == 0)
return 0;
- nrec = grub_be_to_cpu16 (node->inode.data.btree.numrecs);
- keys = &node->inode.data.btree.keys[0];
+ root = grub_xfs_inode_data(&node->inode);
+ nrec = grub_be_to_cpu16 (root->numrecs);
+ keys = &root->keys[0];
if (node->inode.fork_offset)
recoffset = (node->inode.fork_offset - 1) / 2;
else
recoffset = (grub_xfs_inode_size(node->data)
- - ((char *) &node->inode.data.btree.keys
- - (char *) &node->inode))
- / (2 * sizeof (grub_uint64_t));
+ - ((char *) keys - (char *) &node->inode))
+ / (2 * sizeof (grub_uint64_t));
do
{
int i;
@@ -327,7 +435,10 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
0, node->data->bsize, leaf))
return 0;
- if (grub_strncmp ((char *) leaf->magic, "BMAP", 4))
+ if ((!node->data->hascrc &&
+ grub_strncmp ((char *) leaf->magic, "BMAP", 4)) ||
+ (node->data->hascrc &&
+ grub_strncmp ((char *) leaf->magic, "BMA3", 4)))
{
grub_free (leaf);
grub_error (GRUB_ERR_BAD_FS, "not a correct XFS BMAP node");
@@ -335,8 +446,8 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
}
nrec = grub_be_to_cpu16 (leaf->numrecs);
- keys = &leaf->keys[0];
- recoffset = ((node->data->bsize - ((char *) &leaf->keys
+ keys = grub_xfs_btree_keys(node->data, leaf);
+ recoffset = ((node->data->bsize - ((char *) keys
- (char *) leaf))
/ (2 * sizeof (grub_uint64_t)));
}
@@ -346,7 +457,7 @@ grub_xfs_read_block (grub_fshelp_node_t node, grub_disk_addr_t fileblock)
else if (node->inode.format == XFS_INODE_FORMAT_EXT)
{
nrec = grub_be_to_cpu32 (node->inode.nextents);
- exts = &node->inode.data.extents[0];
+ exts = grub_xfs_inode_data(&node->inode);
}
else
{
@@ -404,7 +515,7 @@ grub_xfs_read_symlink (grub_fshelp_node_t node)
switch (node->inode.format)
{
case XFS_INODE_FORMAT_INO:
- return grub_strndup (node->inode.data.raw, size);
+ return grub_strndup (grub_xfs_inode_data(&node->inode), size);
case XFS_INODE_FORMAT_EXT:
{
@@ -501,23 +612,18 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
{
case XFS_INODE_FORMAT_INO:
{
- struct grub_xfs_dir_entry *de = &diro->inode.data.dir.direntry[0];
- int smallino = !diro->inode.data.dir.dirhead.smallino;
+ struct grub_xfs_dir_header *head = grub_xfs_inode_data(&diro->inode);
+ struct grub_xfs_dir_entry *de = grub_xfs_inline_de(head);
+ int smallino = !head->largeino;
int i;
grub_uint64_t parent;
/* If small inode numbers are used to pack the direntry, the
parent inode number is small too. */
if (smallino)
- {
- parent = grub_be_to_cpu32 (diro->inode.data.dir.dirhead.parent.i4);
- /* The header is a bit smaller than usual. */
- de = (struct grub_xfs_dir_entry *) ((char *) de - 4);
- }
+ parent = grub_be_to_cpu32 (head->parent.i4);
else
- {
- parent = grub_be_to_cpu64(diro->inode.data.dir.dirhead.parent.i8);
- }
+ parent = grub_be_to_cpu64 (head->parent.i8);
/* Synthesize the direntries for `.' and `..'. */
if (iterate_dir_call_hook (diro->ino, ".", &ctx))
@@ -526,12 +632,10 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
if (iterate_dir_call_hook (parent, "..", &ctx))
return 1;
- for (i = 0; i < diro->inode.data.dir.dirhead.count; i++)
+ for (i = 0; i < head->count; i++)
{
grub_uint64_t ino;
- grub_uint8_t *inopos = (((grub_uint8_t *) de)
- + sizeof (struct grub_xfs_dir_entry)
- + de->len - 1);
+ grub_uint8_t *inopos = grub_xfs_inline_de_inopos(dir->data, de);
grub_uint8_t c;
/* inopos might be unaligned. */
@@ -556,10 +660,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
return 1;
de->name[de->len] = c;
- de = ((struct grub_xfs_dir_entry *)
- (((char *) de)+ sizeof (struct grub_xfs_dir_entry) + de->len
- + ((smallino ? sizeof (grub_uint32_t)
- : sizeof (grub_uint64_t))) - 1));
+ de = grub_xfs_inline_next_de(dir->data, head, de);
}
break;
}
@@ -586,15 +687,11 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
>> dirblk_log2);
blk++)
{
- /* The header is skipped, the first direntry is stored
- from byte 16. */
- int pos = 16;
+ struct grub_xfs_dir2_entry *direntry =
+ grub_xfs_first_de(dir->data, dirblock);
int entries;
- int tail_start = (dirblk_size
- - sizeof (struct grub_xfs_dirblock_tail));
-
- struct grub_xfs_dirblock_tail *tail;
- tail = (struct grub_xfs_dirblock_tail *) &dirblock[tail_start];
+ struct grub_xfs_dirblock_tail *tail =
+ grub_xfs_dir_tail(dir->data, dirblock);
numread = grub_xfs_read_file (dir, 0, 0,
blk << dirblk_log2,
@@ -606,13 +703,11 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
- grub_be_to_cpu32 (tail->leaf_stale));
/* Iterate over all entries within this block. */
- while (pos < tail_start)
+ while ((char *)direntry < (char *)tail)
{
- struct grub_xfs_dir2_entry *direntry;
grub_uint8_t *freetag;
char *filename;
- direntry = (struct grub_xfs_dir2_entry *) &dirblock[pos];
freetag = (grub_uint8_t *) direntry;
if (grub_get_unaligned16 (freetag) == 0XFFFF)
@@ -620,14 +715,16 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
grub_uint8_t *skip = (freetag + sizeof (grub_uint16_t));
/* This entry is not used, go to the next one. */
- pos += grub_be_to_cpu16 (grub_get_unaligned16 (skip));
+ direntry = (struct grub_xfs_dir2_entry *)
+ (((char *)direntry) +
+ grub_be_to_cpu16 (grub_get_unaligned16 (skip)));
continue;
}
- filename = &dirblock[pos + sizeof (*direntry)];
- /* The byte after the filename is for the tag, which
- is not used by GRUB. So it can be overwritten. */
+ filename = (char *)(direntry + 1);
+ /* The byte after the filename is for the filetype, padding, or
+ tag, which is not used by GRUB. So it can be overwritten. */
filename[direntry->len] = '\0';
if (iterate_dir_call_hook (grub_be_to_cpu64(direntry->inode),
@@ -644,8 +741,7 @@ grub_xfs_iterate_dir (grub_fshelp_node_t dir,
break;
/* Select the next directory entry. */
- pos = GRUB_XFS_NEXT_DIRENT (pos, direntry->len);
- pos = GRUB_XFS_ROUND_TO_DIRENT (pos);
+ direntry = grub_xfs_next_de(dir->data, direntry);
}
}
grub_free (dirblock);
@@ -670,6 +766,7 @@ grub_xfs_mount (grub_disk_t disk)
if (!data)
return 0;
+ grub_dprintf("xfs", "Reading sb\n");
/* Read the superblock. */
if (grub_disk_read (disk, 0, 0,
sizeof (struct grub_xfs_sblock), &data->sblock))
@@ -697,9 +794,13 @@ grub_xfs_mount (grub_disk_t disk)
data->diropen.inode_read = 1;
data->bsize = grub_be_to_cpu32 (data->sblock.bsize);
data->agsize = grub_be_to_cpu32 (data->sblock.agsize);
+ data->hasftype = grub_xfs_sb_hasftype(data);
+ data->hascrc = grub_xfs_sb_hascrc(data);
data->disk = disk;
data->pos = 0;
+ grub_dprintf("xfs", "Reading root ino %llu\n",
+ (unsigned long long) grub_cpu_to_be64(data->sblock.rootino));
grub_xfs_read_inode (data, data->diropen.ino, &data->diropen.inode);
--
1.8.1.4

11
grub2.changes
View File

@ -1,3 +1,14 @@
-------------------------------------------------------------------
Wed Jun 25 09:20:16 UTC 2014 - jack@suse.cz
- xfs V5 superblock support (bnc#880166 bnc#883392)
- added patches:
* grub2-xfs-Add-helper-for-inode-size.patch
* grub2-xfs-Fix-termination-loop-for-directory-iteration.patch
* grub2-xfs-Convert-inode-numbers-to-cpu-endianity-immediate.patch
* grub2-xfs-V5-filesystem-format-support.patch
-------------------------------------------------------------------
Fri Jun 20 19:50:28 UTC 2014 - jeffm@suse.com

8
grub2.spec
View File

@ -174,6 +174,10 @@ Patch224: grub2-ppc64-build-ppc64-32bit.patch
Patch225: grub2-ppc64-qemu.patch
Patch226: grub2-ppc64le-timeout.patch
Patch227: grub2-use-stat-instead-of-udevadm-for-partition-lookup.patch
Patch228: grub2-xfs-Add-helper-for-inode-size.patch
Patch229: grub2-xfs-Fix-termination-loop-for-directory-iteration.patch
Patch230: grub2-xfs-Convert-inode-numbers-to-cpu-endianity-immediate.patch
Patch231: grub2-xfs-V5-filesystem-format-support.patch
Requires: gettext-runtime
%if 0%{?suse_version} >= 1140
@ -364,6 +368,10 @@ mv po/grub.pot po/%{name}.pot
%patch225 -p1
%patch226 -p1
%patch227 -p1
%patch228 -p1
%patch229 -p1
%patch230 -p1
%patch231 -p1
# Generate po/LINGUAS for message catalogs ...
./linguas.sh