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-rw-r--r--fs/ufs/truncate.c139
1 files changed, 75 insertions, 64 deletions
diff --git a/fs/ufs/truncate.c b/fs/ufs/truncate.c
index 0437b0a6fe97..77ed77932aeb 100644
--- a/fs/ufs/truncate.c
+++ b/fs/ufs/truncate.c
@@ -30,8 +30,8 @@
*/
/*
- * Modified to avoid infinite loop on 2006 by
- * Evgeniy Dushistov <dushistov@mail.ru>
+ * Adoptation to use page cache and UFS2 write support by
+ * Evgeniy Dushistov <dushistov@mail.ru>, 2006-2007
*/
#include <linux/errno.h>
@@ -63,13 +63,13 @@
#define DIRECT_FRAGMENT ((inode->i_size + uspi->s_fsize - 1) >> uspi->s_fshift)
-static int ufs_trunc_direct (struct inode * inode)
+static int ufs_trunc_direct(struct inode *inode)
{
struct ufs_inode_info *ufsi = UFS_I(inode);
struct super_block * sb;
struct ufs_sb_private_info * uspi;
- __fs32 * p;
- unsigned frag1, frag2, frag3, frag4, block1, block2;
+ void *p;
+ u64 frag1, frag2, frag3, frag4, block1, block2;
unsigned frag_to_free, free_count;
unsigned i, tmp;
int retry;
@@ -91,13 +91,16 @@ static int ufs_trunc_direct (struct inode * inode)
if (frag2 > frag3) {
frag2 = frag4;
frag3 = frag4 = 0;
- }
- else if (frag2 < frag3) {
+ } else if (frag2 < frag3) {
block1 = ufs_fragstoblks (frag2);
block2 = ufs_fragstoblks (frag3);
}
- UFSD("frag1 %u, frag2 %u, block1 %u, block2 %u, frag3 %u, frag4 %u\n", frag1, frag2, block1, block2, frag3, frag4);
+ UFSD("frag1 %llu, frag2 %llu, block1 %llu, block2 %llu, frag3 %llu,"
+ " frag4 %llu\n",
+ (unsigned long long)frag1, (unsigned long long)frag2,
+ (unsigned long long)block1, (unsigned long long)block2,
+ (unsigned long long)frag3, (unsigned long long)frag4);
if (frag1 >= frag2)
goto next1;
@@ -105,8 +108,8 @@ static int ufs_trunc_direct (struct inode * inode)
/*
* Free first free fragments
*/
- p = ufsi->i_u1.i_data + ufs_fragstoblks (frag1);
- tmp = fs32_to_cpu(sb, *p);
+ p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag1));
+ tmp = ufs_data_ptr_to_cpu(sb, p);
if (!tmp )
ufs_panic (sb, "ufs_trunc_direct", "internal error");
frag2 -= frag1;
@@ -121,12 +124,11 @@ next1:
* Free whole blocks
*/
for (i = block1 ; i < block2; i++) {
- p = ufsi->i_u1.i_data + i;
- tmp = fs32_to_cpu(sb, *p);
+ p = ufs_get_direct_data_ptr(uspi, ufsi, i);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
if (!tmp)
continue;
-
- *p = 0;
+ ufs_data_ptr_clear(uspi, p);
if (free_count == 0) {
frag_to_free = tmp;
@@ -150,13 +152,12 @@ next1:
/*
* Free last free fragments
*/
- p = ufsi->i_u1.i_data + ufs_fragstoblks (frag3);
- tmp = fs32_to_cpu(sb, *p);
+ p = ufs_get_direct_data_ptr(uspi, ufsi, ufs_fragstoblks(frag3));
+ tmp = ufs_data_ptr_to_cpu(sb, p);
if (!tmp )
ufs_panic(sb, "ufs_truncate_direct", "internal error");
frag4 = ufs_fragnum (frag4);
-
- *p = 0;
+ ufs_data_ptr_clear(uspi, p);
ufs_free_fragments (inode, tmp, frag4);
mark_inode_dirty(inode);
@@ -167,17 +168,20 @@ next1:
}
-static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
+static int ufs_trunc_indirect(struct inode *inode, u64 offset, void *p)
{
struct super_block * sb;
struct ufs_sb_private_info * uspi;
struct ufs_buffer_head * ind_ubh;
- __fs32 * ind;
- unsigned indirect_block, i, tmp;
- unsigned frag_to_free, free_count;
+ void *ind;
+ u64 tmp, indirect_block, i, frag_to_free;
+ unsigned free_count;
int retry;
- UFSD("ENTER\n");
+ UFSD("ENTER: ino %lu, offset %llu, p: %p\n",
+ inode->i_ino, (unsigned long long)offset, p);
+
+ BUG_ON(!p);
sb = inode->i_sb;
uspi = UFS_SB(sb)->s_uspi;
@@ -186,27 +190,27 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
free_count = 0;
retry = 0;
- tmp = fs32_to_cpu(sb, *p);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
if (!tmp)
return 0;
ind_ubh = ubh_bread(sb, tmp, uspi->s_bsize);
- if (tmp != fs32_to_cpu(sb, *p)) {
+ if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
ubh_brelse (ind_ubh);
return 1;
}
if (!ind_ubh) {
- *p = 0;
+ ufs_data_ptr_clear(uspi, p);
return 0;
}
indirect_block = (DIRECT_BLOCK > offset) ? (DIRECT_BLOCK - offset) : 0;
for (i = indirect_block; i < uspi->s_apb; i++) {
- ind = ubh_get_addr32 (ind_ubh, i);
- tmp = fs32_to_cpu(sb, *ind);
+ ind = ubh_get_data_ptr(uspi, ind_ubh, i);
+ tmp = ufs_data_ptr_to_cpu(sb, ind);
if (!tmp)
continue;
- *ind = 0;
+ ufs_data_ptr_clear(uspi, ind);
ubh_mark_buffer_dirty(ind_ubh);
if (free_count == 0) {
frag_to_free = tmp;
@@ -226,11 +230,12 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
ufs_free_blocks (inode, frag_to_free, free_count);
}
for (i = 0; i < uspi->s_apb; i++)
- if (*ubh_get_addr32(ind_ubh,i))
+ if (!ufs_is_data_ptr_zero(uspi,
+ ubh_get_data_ptr(uspi, ind_ubh, i)))
break;
if (i >= uspi->s_apb) {
- tmp = fs32_to_cpu(sb, *p);
- *p = 0;
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ ufs_data_ptr_clear(uspi, p);
ufs_free_blocks (inode, tmp, uspi->s_fpb);
mark_inode_dirty(inode);
@@ -248,13 +253,13 @@ static int ufs_trunc_indirect (struct inode * inode, unsigned offset, __fs32 *p)
return retry;
}
-static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
+static int ufs_trunc_dindirect(struct inode *inode, u64 offset, void *p)
{
struct super_block * sb;
struct ufs_sb_private_info * uspi;
- struct ufs_buffer_head * dind_bh;
- unsigned i, tmp, dindirect_block;
- __fs32 * dind;
+ struct ufs_buffer_head *dind_bh;
+ u64 i, tmp, dindirect_block;
+ void *dind;
int retry = 0;
UFSD("ENTER\n");
@@ -266,22 +271,22 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
? ((DIRECT_BLOCK - offset) >> uspi->s_apbshift) : 0;
retry = 0;
- tmp = fs32_to_cpu(sb, *p);
+ tmp = ufs_data_ptr_to_cpu(sb, p);
if (!tmp)
return 0;
dind_bh = ubh_bread(sb, tmp, uspi->s_bsize);
- if (tmp != fs32_to_cpu(sb, *p)) {
+ if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
ubh_brelse (dind_bh);
return 1;
}
if (!dind_bh) {
- *p = 0;
+ ufs_data_ptr_clear(uspi, p);
return 0;
}
for (i = dindirect_block ; i < uspi->s_apb ; i++) {
- dind = ubh_get_addr32 (dind_bh, i);
- tmp = fs32_to_cpu(sb, *dind);
+ dind = ubh_get_data_ptr(uspi, dind_bh, i);
+ tmp = ufs_data_ptr_to_cpu(sb, dind);
if (!tmp)
continue;
retry |= ufs_trunc_indirect (inode, offset + (i << uspi->s_apbshift), dind);
@@ -289,11 +294,12 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
}
for (i = 0; i < uspi->s_apb; i++)
- if (*ubh_get_addr32 (dind_bh, i))
+ if (!ufs_is_data_ptr_zero(uspi,
+ ubh_get_data_ptr(uspi, dind_bh, i)))
break;
if (i >= uspi->s_apb) {
- tmp = fs32_to_cpu(sb, *p);
- *p = 0;
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ ufs_data_ptr_clear(uspi, p);
ufs_free_blocks(inode, tmp, uspi->s_fpb);
mark_inode_dirty(inode);
@@ -311,34 +317,33 @@ static int ufs_trunc_dindirect (struct inode *inode, unsigned offset, __fs32 *p)
return retry;
}
-static int ufs_trunc_tindirect (struct inode * inode)
+static int ufs_trunc_tindirect(struct inode *inode)
{
+ struct super_block *sb = inode->i_sb;
+ struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
struct ufs_inode_info *ufsi = UFS_I(inode);
- struct super_block * sb;
- struct ufs_sb_private_info * uspi;
struct ufs_buffer_head * tind_bh;
- unsigned tindirect_block, tmp, i;
- __fs32 * tind, * p;
+ u64 tindirect_block, tmp, i;
+ void *tind, *p;
int retry;
UFSD("ENTER\n");
- sb = inode->i_sb;
- uspi = UFS_SB(sb)->s_uspi;
retry = 0;
tindirect_block = (DIRECT_BLOCK > (UFS_NDADDR + uspi->s_apb + uspi->s_2apb))
? ((DIRECT_BLOCK - UFS_NDADDR - uspi->s_apb - uspi->s_2apb) >> uspi->s_2apbshift) : 0;
- p = ufsi->i_u1.i_data + UFS_TIND_BLOCK;
- if (!(tmp = fs32_to_cpu(sb, *p)))
+
+ p = ufs_get_direct_data_ptr(uspi, ufsi, UFS_TIND_BLOCK);
+ if (!(tmp = ufs_data_ptr_to_cpu(sb, p)))
return 0;
tind_bh = ubh_bread (sb, tmp, uspi->s_bsize);
- if (tmp != fs32_to_cpu(sb, *p)) {
+ if (tmp != ufs_data_ptr_to_cpu(sb, p)) {
ubh_brelse (tind_bh);
return 1;
}
if (!tind_bh) {
- *p = 0;
+ ufs_data_ptr_clear(uspi, p);
return 0;
}
@@ -349,11 +354,12 @@ static int ufs_trunc_tindirect (struct inode * inode)
ubh_mark_buffer_dirty(tind_bh);
}
for (i = 0; i < uspi->s_apb; i++)
- if (*ubh_get_addr32 (tind_bh, i))
+ if (!ufs_is_data_ptr_zero(uspi,
+ ubh_get_data_ptr(uspi, tind_bh, i)))
break;
if (i >= uspi->s_apb) {
- tmp = fs32_to_cpu(sb, *p);
- *p = 0;
+ tmp = ufs_data_ptr_to_cpu(sb, p);
+ ufs_data_ptr_clear(uspi, p);
ufs_free_blocks(inode, tmp, uspi->s_fpb);
mark_inode_dirty(inode);
@@ -375,7 +381,8 @@ static int ufs_alloc_lastblock(struct inode *inode)
int err = 0;
struct address_space *mapping = inode->i_mapping;
struct ufs_sb_private_info *uspi = UFS_SB(inode->i_sb)->s_uspi;
- unsigned lastfrag, i, end;
+ unsigned i, end;
+ sector_t lastfrag;
struct page *lastpage;
struct buffer_head *bh;
@@ -430,7 +437,9 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
struct ufs_sb_private_info *uspi = UFS_SB(sb)->s_uspi;
int retry, err = 0;
- UFSD("ENTER\n");
+ UFSD("ENTER: ino %lu, i_size: %llu, old_i_size: %llu\n",
+ inode->i_ino, (unsigned long long)i_size_read(inode),
+ (unsigned long long)old_i_size);
if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
S_ISLNK(inode->i_mode)))
@@ -450,10 +459,12 @@ int ufs_truncate(struct inode *inode, loff_t old_i_size)
lock_kernel();
while (1) {
retry = ufs_trunc_direct(inode);
- retry |= ufs_trunc_indirect (inode, UFS_IND_BLOCK,
- (__fs32 *) &ufsi->i_u1.i_data[UFS_IND_BLOCK]);
- retry |= ufs_trunc_dindirect (inode, UFS_IND_BLOCK + uspi->s_apb,
- (__fs32 *) &ufsi->i_u1.i_data[UFS_DIND_BLOCK]);
+ retry |= ufs_trunc_indirect(inode, UFS_IND_BLOCK,
+ ufs_get_direct_data_ptr(uspi, ufsi,
+ UFS_IND_BLOCK));
+ retry |= ufs_trunc_dindirect(inode, UFS_IND_BLOCK + uspi->s_apb,
+ ufs_get_direct_data_ptr(uspi, ufsi,
+ UFS_DIND_BLOCK));
retry |= ufs_trunc_tindirect (inode);
if (!retry)
break;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.