#include "swab.h"
#include "util.h"
+static u64 ufs_frag_map(struct inode *inode, sector_t frag);
+
static int ufs_block_to_path(struct inode *inode, sector_t i_block, sector_t offsets[4])
{
struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
* the begining of the filesystem.
*/
-u64 ufs_frag_map(struct inode *inode, sector_t frag)
+static u64 ufs_frag_map(struct inode *inode, sector_t frag)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block *sb = inode->i_sb;
u64 temp = 0L;
UFSD(": frag = %llu depth = %d\n", (unsigned long long)frag, depth);
- UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",uspi->s_fpbshift,uspi->s_apbmask,mask);
+ UFSD(": uspi->s_fpbshift = %d ,uspi->s_apbmask = %x, mask=%llx\n",
+ uspi->s_fpbshift, uspi->s_apbmask,
+ (unsigned long long)mask);
if (depth == 0)
return 0;
return ret;
}
-static void ufs_clear_block(struct inode *inode, struct buffer_head *bh)
+static void ufs_clear_frag(struct inode *inode, struct buffer_head *bh)
{
lock_buffer(bh);
memset(bh->b_data, 0, inode->i_sb->s_blocksize);
sync_dirty_buffer(bh);
}
-static struct buffer_head *ufs_inode_getfrag(struct inode *inode,
- unsigned int fragment, unsigned int new_fragment,
- unsigned int required, int *err, int metadata,
- long *phys, int *new, struct page *locked_page)
+static struct buffer_head *
+ufs_clear_frags(struct inode *inode, sector_t beg,
+ unsigned int n, sector_t want)
+{
+ struct buffer_head *res = NULL, *bh;
+ sector_t end = beg + n;
+
+ for (; beg < end; ++beg) {
+ bh = sb_getblk(inode->i_sb, beg);
+ ufs_clear_frag(inode, bh);
+ if (want != beg)
+ brelse(bh);
+ else
+ res = bh;
+ }
+ BUG_ON(!res);
+ return res;
+}
+
+/**
+ * ufs_inode_getfrag() - allocate new fragment(s)
+ * @inode - pointer to inode
+ * @fragment - number of `fragment' which hold pointer
+ * to new allocated fragment(s)
+ * @new_fragment - number of new allocated fragment(s)
+ * @required - how many fragment(s) we require
+ * @err - we set it if something wrong
+ * @phys - pointer to where we save physical number of new allocated fragments,
+ * NULL if we allocate not data(indirect blocks for example).
+ * @new - we set it if we allocate new block
+ * @locked_page - for ufs_new_fragments()
+ */
+static struct buffer_head *
+ufs_inode_getfrag(struct inode *inode, unsigned int fragment,
+ sector_t new_fragment, unsigned int required, int *err,
+ long *phys, int *new, struct page *locked_page)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
unsigned block, blockoff, lastfrag, lastblock, lastblockoff;
unsigned tmp, goal;
__fs32 * p, * p2;
- unsigned flags = 0;
- UFSD("ENTER, ino %lu, fragment %u, new_fragment %u, required %u\n",
- inode->i_ino, fragment, new_fragment, required);
+ UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, required %u, "
+ "metadata %d\n", inode->i_ino, fragment,
+ (unsigned long long)new_fragment, required, !phys);
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
-
- flags = UFS_SB(sb)->s_flags;
/* TODO : to be done for write support
if ( (flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
goto ufs2;
tmp = fs32_to_cpu(sb, *p);
lastfrag = ufsi->i_lastfrag;
if (tmp && fragment < lastfrag) {
- if (metadata) {
+ if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
if (tmp == fs32_to_cpu(sb, *p)) {
UFSD("EXIT, result %u\n", tmp + blockoff);
lastfrag = ufsi->i_lastfrag;
}
- goal = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]) + uspi->s_fpb;
+ tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock]);
+ if (tmp)
+ goal = tmp + uspi->s_fpb;
tmp = ufs_new_fragments (inode, p, fragment - blockoff,
goal, required + blockoff,
err, locked_page);
tmp = ufs_new_fragments(inode, p, fragment - (blockoff - lastblockoff),
fs32_to_cpu(sb, *p), required + (blockoff - lastblockoff),
err, locked_page);
- }
+ } else /* (lastblock > block) */ {
/*
* We will allocate new block before last allocated block
*/
- else /* (lastblock > block) */ {
- if (lastblock && (tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[lastblock-1])))
- goal = tmp + uspi->s_fpb;
+ if (block) {
+ tmp = fs32_to_cpu(sb, ufsi->i_u1.i_data[block-1]);
+ if (tmp)
+ goal = tmp + uspi->s_fpb;
+ }
tmp = ufs_new_fragments(inode, p, fragment - blockoff,
goal, uspi->s_fpb, err, locked_page);
}
return NULL;
}
- if (metadata) {
- result = sb_getblk(inode->i_sb, tmp + blockoff);
- ufs_clear_block(inode, result);
+ if (!phys) {
+ result = ufs_clear_frags(inode, tmp, required, tmp + blockoff);
} else {
*phys = tmp + blockoff;
result = NULL;
*/
}
-static struct buffer_head *ufs_block_getfrag(struct inode *inode, struct buffer_head *bh,
- unsigned int fragment, unsigned int new_fragment,
- unsigned int blocksize, int * err, int metadata,
- long *phys, int *new, struct page *locked_page)
+/**
+ * ufs_inode_getblock() - allocate new block
+ * @inode - pointer to inode
+ * @bh - pointer to block which hold "pointer" to new allocated block
+ * @fragment - number of `fragment' which hold pointer
+ * to new allocated block
+ * @new_fragment - number of new allocated fragment
+ * (block will hold this fragment and also uspi->s_fpb-1)
+ * @err - see ufs_inode_getfrag()
+ * @phys - see ufs_inode_getfrag()
+ * @new - see ufs_inode_getfrag()
+ * @locked_page - see ufs_inode_getfrag()
+ */
+static struct buffer_head *
+ufs_inode_getblock(struct inode *inode, struct buffer_head *bh,
+ unsigned int fragment, sector_t new_fragment, int *err,
+ long *phys, int *new, struct page *locked_page)
{
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct buffer_head * result;
unsigned tmp, goal, block, blockoff;
__fs32 * p;
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
block = ufs_fragstoblks (fragment);
blockoff = ufs_fragnum (fragment);
- UFSD("ENTER, ino %lu, fragment %u, new_fragment %u\n", inode->i_ino, fragment, new_fragment);
+ UFSD("ENTER, ino %lu, fragment %u, new_fragment %llu, metadata %d\n",
+ inode->i_ino, fragment, (unsigned long long)new_fragment, !phys);
result = NULL;
if (!bh)
repeat:
tmp = fs32_to_cpu(sb, *p);
if (tmp) {
- if (metadata) {
+ if (!phys) {
result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff);
if (tmp == fs32_to_cpu(sb, *p))
goto out;
}
}
- if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1]) + uspi->s_fpb))
+ if (block && (tmp = fs32_to_cpu(sb, ((__fs32*)bh->b_data)[block-1])))
goal = tmp + uspi->s_fpb;
else
goal = bh->b_blocknr + uspi->s_fpb;
}
- if (metadata) {
- result = sb_getblk(sb, tmp + blockoff);
- ufs_clear_block(inode, result);
+ if (!phys) {
+ result = ufs_clear_frags(inode, tmp, uspi->s_fpb,
+ tmp + blockoff);
} else {
*phys = tmp + blockoff;
*new = 1;
return result;
}
-/*
- * This function gets the block which contains the fragment.
+/**
+ * ufs_getfrag_bloc() - `get_block_t' function, interface between UFS and
+ * readpage, writepage and so on
*/
-int ufs_getfrag_block (struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
+int ufs_getfrag_block(struct inode *inode, sector_t fragment, struct buffer_head *bh_result, int create)
{
struct super_block * sb = inode->i_sb;
struct ufs_sb_private_info * uspi = UFS_SB(sb)->s_uspi;
if (!create) {
phys64 = ufs_frag_map(inode, fragment);
- UFSD("phys64 = %llu \n",phys64);
+ UFSD("phys64 = %llu\n", (unsigned long long)phys64);
if (phys64)
map_bh(bh_result, sb, phys64);
return 0;
* it much more readable:
*/
#define GET_INODE_DATABLOCK(x) \
- ufs_inode_getfrag(inode, x, fragment, 1, &err, 0, &phys, &new, bh_result->b_page)
+ ufs_inode_getfrag(inode, x, fragment, 1, &err, &phys, &new, bh_result->b_page)
#define GET_INODE_PTR(x) \
- ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, 1, NULL, NULL, bh_result->b_page)
+ ufs_inode_getfrag(inode, x, fragment, uspi->s_fpb, &err, NULL, NULL, bh_result->b_page)
#define GET_INDIRECT_DATABLOCK(x) \
- ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \
- &err, 0, &phys, &new, bh_result->b_page);
+ ufs_inode_getblock(inode, bh, x, fragment, \
+ &err, &phys, &new, bh_result->b_page);
#define GET_INDIRECT_PTR(x) \
- ufs_block_getfrag(inode, bh, x, fragment, sb->s_blocksize, \
- &err, 1, NULL, NULL, bh_result->b_page);
+ ufs_inode_getblock(inode, bh, x, fragment, \
+ &err, NULL, NULL, bh_result->b_page);
if (ptr < UFS_NDIR_FRAGMENT) {
bh = GET_INODE_DATABLOCK(ptr);
goto abort;
}
-struct buffer_head *ufs_getfrag(struct inode *inode, unsigned int fragment,
- int create, int *err)
+static struct buffer_head *ufs_getfrag(struct inode *inode,
+ unsigned int fragment,
+ int create, int *err)
{
struct buffer_head dummy;
int error;
{
return generic_block_bmap(mapping,block,ufs_getfrag_block);
}
-struct address_space_operations ufs_aops = {
+const struct address_space_operations ufs_aops = {
.readpage = ufs_readpage,
.writepage = ufs_writepage,
.sync_page = block_sync_page,
ufs_get_inode_dev(inode->i_sb, UFS_I(inode)));
}
-void ufs_read_inode (struct inode * inode)
+static void ufs1_read_inode(struct inode *inode, struct ufs_inode *ufs_inode)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
- struct ufs_inode * ufs_inode;
- struct ufs2_inode *ufs2_inode;
- struct buffer_head * bh;
+ struct super_block *sb = inode->i_sb;
mode_t mode;
unsigned i;
- unsigned flags;
-
- UFSD("ENTER, ino %lu\n", inode->i_ino);
-
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
- flags = UFS_SB(sb)->s_flags;
-
- if (inode->i_ino < UFS_ROOTINO ||
- inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
- ufs_warning (sb, "ufs_read_inode", "bad inode number (%lu)\n", inode->i_ino);
- goto bad_inode;
- }
-
- bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
- if (!bh) {
- ufs_warning (sb, "ufs_read_inode", "unable to read inode %lu\n", inode->i_ino);
- goto bad_inode;
- }
- if ((flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2)
- goto ufs2_inode;
-
- ufs_inode = (struct ufs_inode *) (bh->b_data + sizeof(struct ufs_inode) * ufs_inotofsbo(inode->i_ino));
/*
* Copy data to the in-core inode.
inode->i_atime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
inode->i_blocks = fs32_to_cpu(sb, ufs_inode->ui_blocks);
- inode->i_blksize = PAGE_SIZE; /* This is the optimal IO size (for stat) */
- inode->i_version++;
ufsi->i_flags = fs32_to_cpu(sb, ufs_inode->ui_flags);
ufsi->i_gen = fs32_to_cpu(sb, ufs_inode->ui_gen);
ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
- ufsi->i_lastfrag = (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
+
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
ufsi->i_u1.i_data[i] = ufs_inode->ui_u2.ui_addr.ui_db[i];
- }
- else {
+ } else {
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
ufsi->i_u1.i_symlink[i] = ufs_inode->ui_u2.ui_symlink[i];
}
- ufsi->i_osync = 0;
-
- ufs_set_inode_ops(inode);
-
- brelse (bh);
-
- UFSD("EXIT\n");
- return;
+}
-bad_inode:
- make_bad_inode(inode);
- return;
+static void ufs2_read_inode(struct inode *inode, struct ufs2_inode *ufs2_inode)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block *sb = inode->i_sb;
+ mode_t mode;
+ unsigned i;
-ufs2_inode :
UFSD("Reading ufs2 inode, ino %lu\n", inode->i_ino);
-
- ufs2_inode = (struct ufs2_inode *)(bh->b_data + sizeof(struct ufs2_inode) * ufs_inotofsbo(inode->i_ino));
-
/*
* Copy data to the in-core inode.
*/
inode->i_atime.tv_nsec = 0;
inode->i_ctime.tv_nsec = 0;
inode->i_blocks = fs64_to_cpu(sb, ufs2_inode->ui_blocks);
- inode->i_blksize = PAGE_SIZE; /*This is the optimal IO size(for stat)*/
-
- inode->i_version++;
ufsi->i_flags = fs32_to_cpu(sb, ufs2_inode->ui_flags);
ufsi->i_gen = fs32_to_cpu(sb, ufs2_inode->ui_gen);
/*
ufsi->i_shadow = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_shadow);
ufsi->i_oeftflag = fs32_to_cpu(sb, ufs_inode->ui_u3.ui_sun.ui_oeftflag);
*/
- ufsi->i_lastfrag= (inode->i_size + uspi->s_fsize- 1) >> uspi->s_fshift;
if (S_ISCHR(mode) || S_ISBLK(mode) || inode->i_blocks) {
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR); i++)
ufsi->i_u1.u2_i_data[i] =
ufs2_inode->ui_u2.ui_addr.ui_db[i];
- }
- else {
+ } else {
for (i = 0; i < (UFS_NDADDR + UFS_NINDIR) * 4; i++)
ufsi->i_u1.i_symlink[i] = ufs2_inode->ui_u2.ui_symlink[i];
}
+}
+
+void ufs_read_inode(struct inode * inode)
+{
+ struct ufs_inode_info *ufsi = UFS_I(inode);
+ struct super_block * sb;
+ struct ufs_sb_private_info * uspi;
+ struct buffer_head * bh;
+
+ UFSD("ENTER, ino %lu\n", inode->i_ino);
+
+ sb = inode->i_sb;
+ uspi = UFS_SB(sb)->s_uspi;
+
+ if (inode->i_ino < UFS_ROOTINO ||
+ inode->i_ino > (uspi->s_ncg * uspi->s_ipg)) {
+ ufs_warning(sb, "ufs_read_inode", "bad inode number (%lu)\n",
+ inode->i_ino);
+ goto bad_inode;
+ }
+
+ bh = sb_bread(sb, uspi->s_sbbase + ufs_inotofsba(inode->i_ino));
+ if (!bh) {
+ ufs_warning(sb, "ufs_read_inode", "unable to read inode %lu\n",
+ inode->i_ino);
+ goto bad_inode;
+ }
+ if ((UFS_SB(sb)->s_flags & UFS_TYPE_MASK) == UFS_TYPE_UFS2) {
+ struct ufs2_inode *ufs2_inode = (struct ufs2_inode *)bh->b_data;
+
+ ufs2_read_inode(inode,
+ ufs2_inode + ufs_inotofsbo(inode->i_ino));
+ } else {
+ struct ufs_inode *ufs_inode = (struct ufs_inode *)bh->b_data;
+
+ ufs1_read_inode(inode, ufs_inode + ufs_inotofsbo(inode->i_ino));
+ }
+
+ inode->i_blksize = PAGE_SIZE;/*This is the optimal IO size (for stat)*/
+ inode->i_version++;
+ ufsi->i_lastfrag =
+ (inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift;
+ ufsi->i_dir_start_lookup = 0;
ufsi->i_osync = 0;
ufs_set_inode_ops(inode);
UFSD("EXIT\n");
return;
+
+bad_inode:
+ make_bad_inode(inode);
}
static int ufs_update_inode(struct inode * inode, int do_sync)
void ufs_delete_inode (struct inode * inode)
{
+ loff_t old_i_size;
+
truncate_inode_pages(&inode->i_data, 0);
/*UFS_I(inode)->i_dtime = CURRENT_TIME;*/
lock_kernel();
mark_inode_dirty(inode);
ufs_update_inode(inode, IS_SYNC(inode));
+ old_i_size = inode->i_size;
inode->i_size = 0;
- if (inode->i_blocks)
- ufs_truncate (inode);
+ if (inode->i_blocks && ufs_truncate(inode, old_i_size))
+ ufs_warning(inode->i_sb, __FUNCTION__, "ufs_truncate failed\n");
ufs_free_inode (inode);
unlock_kernel();
}
projects / powerpc.git / blobdiff