Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6:
UDF: Close small mem leak in udf_find_entry()
udf: Fix directory corruption after extent merging
udf: Protect udf_file_aio_write from possible races
udf: Remove unnecessary bkl usages
udf: Use of s_alloc_mutex to serialize udf_relocate_blocks() execution
udf: Replace bkl with the UDF_I(inode)->i_data_sem for protect udf_inode_info struct
udf: Remove BKL from free space counting functions
udf: Call udf_add_free_space() for more blocks at once in udf_free_blocks()
udf: Remove BKL from udf_put_super() and udf_remount_fs()
udf: Protect default inode credentials by rwlock
udf: Protect all modifications of LVID with s_alloc_mutex
udf: Move handling of uniqueID into a helper function and protect it by a s_alloc_mutex
udf: Remove BKL from udf_update_inode
udf: Convert UDF_SB(sb)->s_flags to use bitops
fs/udf: Add printf format/argument verification
fs/udf: Use vzalloc
(Evil merge: this also removes the BKL dependency from the Kconfig file)
diff --git a/fs/udf/Kconfig b/fs/udf/Kconfig
index f8def3c..0e0e99b 100644
--- a/fs/udf/Kconfig
+++ b/fs/udf/Kconfig
@@ -1,6 +1,5 @@
config UDF_FS
tristate "UDF file system support"
- depends on BKL # needs serious work to remove
select CRC_ITU_T
help
This is the new file system used on some CD-ROMs and DVDs. Say Y if
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index b608efa..306ee39 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -157,10 +157,9 @@
udf_debug("bit %ld already set\n", bit + i);
udf_debug("byte=%2x\n",
((char *)bh->b_data)[(bit + i) >> 3]);
- } else {
- udf_add_free_space(sb, sbi->s_partition, 1);
}
}
+ udf_add_free_space(sb, sbi->s_partition, count);
mark_buffer_dirty(bh);
if (overflow) {
block += count;
diff --git a/fs/udf/dir.c b/fs/udf/dir.c
index 51552bf..eb8bfe2 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -30,7 +30,6 @@
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include "udf_i.h"
@@ -190,18 +189,14 @@
struct inode *dir = filp->f_path.dentry->d_inode;
int result;
- lock_kernel();
-
if (filp->f_pos == 0) {
if (filldir(dirent, ".", 1, filp->f_pos, dir->i_ino, DT_DIR) < 0) {
- unlock_kernel();
return 0;
}
filp->f_pos++;
}
result = do_udf_readdir(dir, filp, filldir, dirent);
- unlock_kernel();
return result;
}
diff --git a/fs/udf/file.c b/fs/udf/file.c
index 66b9e7e..89c7848 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -32,7 +32,6 @@
#include <linux/string.h> /* memset */
#include <linux/capability.h>
#include <linux/errno.h>
-#include <linux/smp_lock.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
#include <linux/aio.h>
@@ -114,6 +113,7 @@
size_t count = iocb->ki_left;
struct udf_inode_info *iinfo = UDF_I(inode);
+ down_write(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
if (file->f_flags & O_APPEND)
pos = inode->i_size;
@@ -126,6 +126,7 @@
udf_expand_file_adinicb(inode, pos + count, &err);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
udf_debug("udf_expand_adinicb: err=%d\n", err);
+ up_write(&iinfo->i_data_sem);
return err;
}
} else {
@@ -135,6 +136,7 @@
iinfo->i_lenAlloc = inode->i_size;
}
}
+ up_write(&iinfo->i_data_sem);
retval = generic_file_aio_write(iocb, iov, nr_segs, ppos);
if (retval > 0)
@@ -149,8 +151,6 @@
long old_block, new_block;
int result = -EINVAL;
- lock_kernel();
-
if (file_permission(filp, MAY_READ) != 0) {
udf_debug("no permission to access inode %lu\n", inode->i_ino);
result = -EPERM;
@@ -196,7 +196,6 @@
}
out:
- unlock_kernel();
return result;
}
@@ -204,10 +203,10 @@
{
if (filp->f_mode & FMODE_WRITE) {
mutex_lock(&inode->i_mutex);
- lock_kernel();
+ down_write(&UDF_I(inode)->i_data_sem);
udf_discard_prealloc(inode);
udf_truncate_tail_extent(inode);
- unlock_kernel();
+ up_write(&UDF_I(inode)->i_data_sem);
mutex_unlock(&inode->i_mutex);
}
return 0;
diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c
index 75d9304..6fb7e0a 100644
--- a/fs/udf/ialloc.c
+++ b/fs/udf/ialloc.c
@@ -92,28 +92,19 @@
return NULL;
}
- mutex_lock(&sbi->s_alloc_mutex);
if (sbi->s_lvid_bh) {
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)
- sbi->s_lvid_bh->b_data;
- struct logicalVolIntegrityDescImpUse *lvidiu =
- udf_sb_lvidiu(sbi);
- struct logicalVolHeaderDesc *lvhd;
- uint64_t uniqueID;
- lvhd = (struct logicalVolHeaderDesc *)
- (lvid->logicalVolContentsUse);
+ struct logicalVolIntegrityDescImpUse *lvidiu;
+
+ iinfo->i_unique = lvid_get_unique_id(sb);
+ mutex_lock(&sbi->s_alloc_mutex);
+ lvidiu = udf_sb_lvidiu(sbi);
if (S_ISDIR(mode))
le32_add_cpu(&lvidiu->numDirs, 1);
else
le32_add_cpu(&lvidiu->numFiles, 1);
- iinfo->i_unique = uniqueID = le64_to_cpu(lvhd->uniqueID);
- if (!(++uniqueID & 0x00000000FFFFFFFFUL))
- uniqueID += 16;
- lvhd->uniqueID = cpu_to_le64(uniqueID);
udf_updated_lvid(sb);
+ mutex_unlock(&sbi->s_alloc_mutex);
}
- mutex_unlock(&sbi->s_alloc_mutex);
inode_init_owner(inode, dir, mode);
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index fc48f37..c6a2e78 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -31,7 +31,6 @@
#include "udfdecl.h"
#include <linux/mm.h>
-#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/buffer_head.h>
@@ -51,6 +50,7 @@
static mode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int);
static void udf_fill_inode(struct inode *, struct buffer_head *);
+static int udf_sync_inode(struct inode *inode);
static int udf_alloc_i_data(struct inode *inode, size_t size);
static struct buffer_head *inode_getblk(struct inode *, sector_t, int *,
sector_t *, int *);
@@ -79,9 +79,7 @@
want_delete = 1;
inode->i_size = 0;
udf_truncate(inode);
- lock_kernel();
udf_update_inode(inode, IS_SYNC(inode));
- unlock_kernel();
}
invalidate_inode_buffers(inode);
end_writeback(inode);
@@ -97,9 +95,7 @@
kfree(iinfo->i_ext.i_data);
iinfo->i_ext.i_data = NULL;
if (want_delete) {
- lock_kernel();
udf_free_inode(inode);
- unlock_kernel();
}
}
@@ -302,10 +298,9 @@
err = -EIO;
new = 0;
bh = NULL;
-
- lock_kernel();
-
iinfo = UDF_I(inode);
+
+ down_write(&iinfo->i_data_sem);
if (block == iinfo->i_next_alloc_block + 1) {
iinfo->i_next_alloc_block++;
iinfo->i_next_alloc_goal++;
@@ -324,7 +319,7 @@
map_bh(bh_result, inode->i_sb, phys);
abort:
- unlock_kernel();
+ up_write(&iinfo->i_data_sem);
return err;
}
@@ -1022,16 +1017,16 @@
if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
return;
- lock_kernel();
iinfo = UDF_I(inode);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
+ down_write(&iinfo->i_data_sem);
if (inode->i_sb->s_blocksize <
(udf_file_entry_alloc_offset(inode) +
inode->i_size)) {
udf_expand_file_adinicb(inode, inode->i_size, &err);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
inode->i_size = iinfo->i_lenAlloc;
- unlock_kernel();
+ up_write(&iinfo->i_data_sem);
return;
} else
udf_truncate_extents(inode);
@@ -1042,10 +1037,13 @@
offset - udf_file_entry_alloc_offset(inode));
iinfo->i_lenAlloc = inode->i_size;
}
+ up_write(&iinfo->i_data_sem);
} else {
block_truncate_page(inode->i_mapping, inode->i_size,
udf_get_block);
+ down_write(&iinfo->i_data_sem);
udf_truncate_extents(inode);
+ up_write(&iinfo->i_data_sem);
}
inode->i_mtime = inode->i_ctime = current_fs_time(inode->i_sb);
@@ -1053,7 +1051,6 @@
udf_sync_inode(inode);
else
mark_inode_dirty(inode);
- unlock_kernel();
}
static void __udf_read_inode(struct inode *inode)
@@ -1202,6 +1199,7 @@
return;
}
+ read_lock(&sbi->s_cred_lock);
inode->i_uid = le32_to_cpu(fe->uid);
if (inode->i_uid == -1 ||
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_UID_IGNORE) ||
@@ -1214,13 +1212,6 @@
UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_GID_SET))
inode->i_gid = UDF_SB(inode->i_sb)->s_gid;
- inode->i_nlink = le16_to_cpu(fe->fileLinkCount);
- if (!inode->i_nlink)
- inode->i_nlink = 1;
-
- inode->i_size = le64_to_cpu(fe->informationLength);
- iinfo->i_lenExtents = inode->i_size;
-
if (fe->icbTag.fileType != ICBTAG_FILE_TYPE_DIRECTORY &&
sbi->s_fmode != UDF_INVALID_MODE)
inode->i_mode = sbi->s_fmode;
@@ -1230,6 +1221,14 @@
else
inode->i_mode = udf_convert_permissions(fe);
inode->i_mode &= ~sbi->s_umask;
+ read_unlock(&sbi->s_cred_lock);
+
+ inode->i_nlink = le16_to_cpu(fe->fileLinkCount);
+ if (!inode->i_nlink)
+ inode->i_nlink = 1;
+
+ inode->i_size = le64_to_cpu(fe->informationLength);
+ iinfo->i_lenExtents = inode->i_size;
if (iinfo->i_efe == 0) {
inode->i_blocks = le64_to_cpu(fe->logicalBlocksRecorded) <<
@@ -1373,16 +1372,10 @@
int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
{
- int ret;
-
- lock_kernel();
- ret = udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
- unlock_kernel();
-
- return ret;
+ return udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
-int udf_sync_inode(struct inode *inode)
+static int udf_sync_inode(struct inode *inode)
{
return udf_update_inode(inode, 1);
}
@@ -2048,7 +2041,7 @@
struct extent_position epos = {};
int ret;
- lock_kernel();
+ down_read(&UDF_I(inode)->i_data_sem);
if (inode_bmap(inode, block, &epos, &eloc, &elen, &offset) ==
(EXT_RECORDED_ALLOCATED >> 30))
@@ -2056,7 +2049,7 @@
else
ret = 0;
- unlock_kernel();
+ up_read(&UDF_I(inode)->i_data_sem);
brelse(epos.bh);
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_VARCONV))
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 6d8dc02..2be0f9e 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -27,7 +27,6 @@
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/sched.h>
#include <linux/crc-itu-t.h>
@@ -228,10 +227,8 @@
}
if ((cfi->fileCharacteristics & FID_FILE_CHAR_PARENT) &&
- isdotdot) {
- brelse(epos.bh);
- return fi;
- }
+ isdotdot)
+ goto out_ok;
if (!lfi)
continue;
@@ -263,7 +260,6 @@
if (dentry->d_name.len > UDF_NAME_LEN - 2)
return ERR_PTR(-ENAMETOOLONG);
- lock_kernel();
#ifdef UDF_RECOVERY
/* temporary shorthand for specifying files by inode number */
if (!strncmp(dentry->d_name.name, ".B=", 3)) {
@@ -275,7 +271,6 @@
};
inode = udf_iget(dir->i_sb, lb);
if (!inode) {
- unlock_kernel();
return ERR_PTR(-EACCES);
}
} else
@@ -291,11 +286,9 @@
loc = lelb_to_cpu(cfi.icb.extLocation);
inode = udf_iget(dir->i_sb, &loc);
if (!inode) {
- unlock_kernel();
return ERR_PTR(-EACCES);
}
}
- unlock_kernel();
return d_splice_alias(inode, dentry);
}
@@ -476,15 +469,19 @@
f_pos >> dir->i_sb->s_blocksize_bits, 1, err);
if (!fibh->ebh)
goto out_err;
+ /* Extents could have been merged, invalidate our position */
+ brelse(epos.bh);
+ epos.bh = NULL;
+ epos.block = dinfo->i_location;
+ epos.offset = udf_file_entry_alloc_offset(dir);
if (!fibh->soffset) {
- if (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
- (EXT_RECORDED_ALLOCATED >> 30)) {
- block = eloc.logicalBlockNum + ((elen - 1) >>
+ /* Find the freshly allocated block */
+ while (udf_next_aext(dir, &epos, &eloc, &elen, 1) ==
+ (EXT_RECORDED_ALLOCATED >> 30))
+ ;
+ block = eloc.logicalBlockNum + ((elen - 1) >>
dir->i_sb->s_blocksize_bits);
- } else
- block++;
-
brelse(fibh->sbh);
fibh->sbh = fibh->ebh;
fi = (struct fileIdentDesc *)(fibh->sbh->b_data);
@@ -562,10 +559,8 @@
int err;
struct udf_inode_info *iinfo;
- lock_kernel();
inode = udf_new_inode(dir, mode, &err);
if (!inode) {
- unlock_kernel();
return err;
}
@@ -583,7 +578,6 @@
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
- unlock_kernel();
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
@@ -596,7 +590,6 @@
if (fibh.sbh != fibh.ebh)
brelse(fibh.ebh);
brelse(fibh.sbh);
- unlock_kernel();
d_instantiate(dentry, inode);
return 0;
@@ -614,7 +607,6 @@
if (!old_valid_dev(rdev))
return -EINVAL;
- lock_kernel();
err = -EIO;
inode = udf_new_inode(dir, mode, &err);
if (!inode)
@@ -627,7 +619,6 @@
inode->i_nlink--;
mark_inode_dirty(inode);
iput(inode);
- unlock_kernel();
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
@@ -646,7 +637,6 @@
err = 0;
out:
- unlock_kernel();
return err;
}
@@ -659,7 +649,6 @@
struct udf_inode_info *dinfo = UDF_I(dir);
struct udf_inode_info *iinfo;
- lock_kernel();
err = -EMLINK;
if (dir->i_nlink >= (256 << sizeof(dir->i_nlink)) - 1)
goto out;
@@ -712,7 +701,6 @@
err = 0;
out:
- unlock_kernel();
return err;
}
@@ -794,7 +782,6 @@
struct kernel_lb_addr tloc;
retval = -ENOENT;
- lock_kernel();
fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
if (!fi)
goto out;
@@ -826,7 +813,6 @@
brelse(fibh.sbh);
out:
- unlock_kernel();
return retval;
}
@@ -840,7 +826,6 @@
struct kernel_lb_addr tloc;
retval = -ENOENT;
- lock_kernel();
fi = udf_find_entry(dir, &dentry->d_name, &fibh, &cfi);
if (!fi)
goto out;
@@ -870,7 +855,6 @@
brelse(fibh.sbh);
out:
- unlock_kernel();
return retval;
}
@@ -890,21 +874,21 @@
int block;
unsigned char *name = NULL;
int namelen;
- struct buffer_head *bh;
struct udf_inode_info *iinfo;
+ struct super_block *sb = dir->i_sb;
- lock_kernel();
inode = udf_new_inode(dir, S_IFLNK | S_IRWXUGO, &err);
if (!inode)
goto out;
+ iinfo = UDF_I(inode);
+ down_write(&iinfo->i_data_sem);
name = kmalloc(UDF_NAME_LEN, GFP_NOFS);
if (!name) {
err = -ENOMEM;
goto out_no_entry;
}
- iinfo = UDF_I(inode);
inode->i_data.a_ops = &udf_symlink_aops;
inode->i_op = &udf_symlink_inode_operations;
@@ -912,7 +896,7 @@
struct kernel_lb_addr eloc;
uint32_t bsize;
- block = udf_new_block(inode->i_sb, inode,
+ block = udf_new_block(sb, inode,
iinfo->i_location.partitionReferenceNum,
iinfo->i_location.logicalBlockNum, &err);
if (!block)
@@ -923,17 +907,17 @@
eloc.logicalBlockNum = block;
eloc.partitionReferenceNum =
iinfo->i_location.partitionReferenceNum;
- bsize = inode->i_sb->s_blocksize;
+ bsize = sb->s_blocksize;
iinfo->i_lenExtents = bsize;
udf_add_aext(inode, &epos, &eloc, bsize, 0);
brelse(epos.bh);
- block = udf_get_pblock(inode->i_sb, block,
+ block = udf_get_pblock(sb, block,
iinfo->i_location.partitionReferenceNum,
0);
- epos.bh = udf_tgetblk(inode->i_sb, block);
+ epos.bh = udf_tgetblk(sb, block);
lock_buffer(epos.bh);
- memset(epos.bh->b_data, 0x00, inode->i_sb->s_blocksize);
+ memset(epos.bh->b_data, 0x00, bsize);
set_buffer_uptodate(epos.bh);
unlock_buffer(epos.bh);
mark_buffer_dirty_inode(epos.bh, inode);
@@ -941,7 +925,7 @@
} else
ea = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
- eoffset = inode->i_sb->s_blocksize - udf_ext0_offset(inode);
+ eoffset = sb->s_blocksize - udf_ext0_offset(inode);
pc = (struct pathComponent *)ea;
if (*symname == '/') {
@@ -981,7 +965,7 @@
}
if (pc->componentType == 5) {
- namelen = udf_put_filename(inode->i_sb, compstart, name,
+ namelen = udf_put_filename(sb, compstart, name,
symname - compstart);
if (!namelen)
goto out_no_entry;
@@ -1015,27 +999,16 @@
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi)
goto out_no_entry;
- cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
+ cfi.icb.extLength = cpu_to_le32(sb->s_blocksize);
cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location);
- bh = UDF_SB(inode->i_sb)->s_lvid_bh;
- if (bh) {
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)bh->b_data;
- struct logicalVolHeaderDesc *lvhd;
- uint64_t uniqueID;
- lvhd = (struct logicalVolHeaderDesc *)
- lvid->logicalVolContentsUse;
- uniqueID = le64_to_cpu(lvhd->uniqueID);
+ if (UDF_SB(inode->i_sb)->s_lvid_bh) {
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
- if (!(++uniqueID & 0x00000000FFFFFFFFUL))
- uniqueID += 16;
- lvhd->uniqueID = cpu_to_le64(uniqueID);
- mark_buffer_dirty(bh);
+ cpu_to_le32(lvid_get_unique_id(sb));
}
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
mark_inode_dirty(dir);
+ up_write(&iinfo->i_data_sem);
if (fibh.sbh != fibh.ebh)
brelse(fibh.ebh);
brelse(fibh.sbh);
@@ -1044,10 +1017,10 @@
out:
kfree(name);
- unlock_kernel();
return err;
out_no_entry:
+ up_write(&iinfo->i_data_sem);
inode_dec_link_count(inode);
iput(inode);
goto out;
@@ -1060,36 +1033,20 @@
struct udf_fileident_bh fibh;
struct fileIdentDesc cfi, *fi;
int err;
- struct buffer_head *bh;
- lock_kernel();
if (inode->i_nlink >= (256 << sizeof(inode->i_nlink)) - 1) {
- unlock_kernel();
return -EMLINK;
}
fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err);
if (!fi) {
- unlock_kernel();
return err;
}
cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize);
cfi.icb.extLocation = cpu_to_lelb(UDF_I(inode)->i_location);
- bh = UDF_SB(inode->i_sb)->s_lvid_bh;
- if (bh) {
- struct logicalVolIntegrityDesc *lvid =
- (struct logicalVolIntegrityDesc *)bh->b_data;
- struct logicalVolHeaderDesc *lvhd;
- uint64_t uniqueID;
- lvhd = (struct logicalVolHeaderDesc *)
- (lvid->logicalVolContentsUse);
- uniqueID = le64_to_cpu(lvhd->uniqueID);
+ if (UDF_SB(inode->i_sb)->s_lvid_bh) {
*(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse =
- cpu_to_le32(uniqueID & 0x00000000FFFFFFFFUL);
- if (!(++uniqueID & 0x00000000FFFFFFFFUL))
- uniqueID += 16;
- lvhd->uniqueID = cpu_to_le64(uniqueID);
- mark_buffer_dirty(bh);
+ cpu_to_le32(lvid_get_unique_id(inode->i_sb));
}
udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL);
if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB)
@@ -1103,7 +1060,6 @@
mark_inode_dirty(inode);
ihold(inode);
d_instantiate(dentry, inode);
- unlock_kernel();
return 0;
}
@@ -1124,7 +1080,6 @@
struct kernel_lb_addr tloc;
struct udf_inode_info *old_iinfo = UDF_I(old_inode);
- lock_kernel();
ofi = udf_find_entry(old_dir, &old_dentry->d_name, &ofibh, &ocfi);
if (ofi) {
if (ofibh.sbh != ofibh.ebh)
@@ -1248,7 +1203,6 @@
brelse(nfibh.ebh);
brelse(nfibh.sbh);
}
- unlock_kernel();
return retval;
}
@@ -1261,7 +1215,6 @@
struct fileIdentDesc cfi;
struct udf_fileident_bh fibh;
- lock_kernel();
if (!udf_find_entry(child->d_inode, &dotdot, &fibh, &cfi))
goto out_unlock;
@@ -1273,11 +1226,9 @@
inode = udf_iget(child->d_inode->i_sb, &tloc);
if (!inode)
goto out_unlock;
- unlock_kernel();
return d_obtain_alias(inode);
out_unlock:
- unlock_kernel();
return ERR_PTR(-EACCES);
}
diff --git a/fs/udf/partition.c b/fs/udf/partition.c
index 745eb20..a71090e 100644
--- a/fs/udf/partition.c
+++ b/fs/udf/partition.c
@@ -25,6 +25,7 @@
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/buffer_head.h>
+#include <linux/mutex.h>
uint32_t udf_get_pblock(struct super_block *sb, uint32_t block,
uint16_t partition, uint32_t offset)
@@ -159,7 +160,9 @@
struct udf_sb_info *sbi = UDF_SB(sb);
u16 reallocationTableLen;
struct buffer_head *bh;
+ int ret = 0;
+ mutex_lock(&sbi->s_alloc_mutex);
for (i = 0; i < sbi->s_partitions; i++) {
struct udf_part_map *map = &sbi->s_partmaps[i];
if (old_block > map->s_partition_root &&
@@ -175,8 +178,10 @@
break;
}
- if (!st)
- return 1;
+ if (!st) {
+ ret = 1;
+ goto out;
+ }
reallocationTableLen =
le16_to_cpu(st->reallocationTableLen);
@@ -207,14 +212,16 @@
((old_block -
map->s_partition_root) &
(sdata->s_packet_len - 1));
- return 0;
+ ret = 0;
+ goto out;
} else if (origLoc == packet) {
*new_block = le32_to_cpu(
entry->mappedLocation) +
((old_block -
map->s_partition_root) &
(sdata->s_packet_len - 1));
- return 0;
+ ret = 0;
+ goto out;
} else if (origLoc > packet)
break;
}
@@ -251,20 +258,24 @@
st->mapEntry[k].mappedLocation) +
((old_block - map->s_partition_root) &
(sdata->s_packet_len - 1));
- return 0;
+ ret = 0;
+ goto out;
}
- return 1;
+ ret = 1;
+ goto out;
} /* if old_block */
}
if (i == sbi->s_partitions) {
/* outside of partitions */
/* for now, fail =) */
- return 1;
+ ret = 1;
}
- return 0;
+out:
+ mutex_unlock(&sbi->s_alloc_mutex);
+ return ret;
}
static uint32_t udf_try_read_meta(struct inode *inode, uint32_t block,
diff --git a/fs/udf/super.c b/fs/udf/super.c
index b539d53..7b27b06 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -48,7 +48,6 @@
#include <linux/stat.h>
#include <linux/cdrom.h>
#include <linux/nls.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
#include <linux/vmalloc.h>
@@ -135,6 +134,7 @@
ei->i_next_alloc_block = 0;
ei->i_next_alloc_goal = 0;
ei->i_strat4096 = 0;
+ init_rwsem(&ei->i_data_sem);
return &ei->vfs_inode;
}
@@ -574,13 +574,14 @@
if (!udf_parse_options(options, &uopt, true))
return -EINVAL;
- lock_kernel();
+ write_lock(&sbi->s_cred_lock);
sbi->s_flags = uopt.flags;
sbi->s_uid = uopt.uid;
sbi->s_gid = uopt.gid;
sbi->s_umask = uopt.umask;
sbi->s_fmode = uopt.fmode;
sbi->s_dmode = uopt.dmode;
+ write_unlock(&sbi->s_cred_lock);
if (sbi->s_lvid_bh) {
int write_rev = le16_to_cpu(udf_sb_lvidiu(sbi)->minUDFWriteRev);
@@ -597,7 +598,6 @@
udf_open_lvid(sb);
out_unlock:
- unlock_kernel();
return error;
}
@@ -966,9 +966,9 @@
(sizeof(struct buffer_head *) * nr_groups);
if (size <= PAGE_SIZE)
- bitmap = kmalloc(size, GFP_KERNEL);
+ bitmap = kzalloc(size, GFP_KERNEL);
else
- bitmap = vmalloc(size); /* TODO: get rid of vmalloc */
+ bitmap = vzalloc(size); /* TODO: get rid of vzalloc */
if (bitmap == NULL) {
udf_error(sb, __func__,
@@ -977,7 +977,6 @@
return NULL;
}
- memset(bitmap, 0x00, size);
bitmap->s_block_bitmap = (struct buffer_head **)(bitmap + 1);
bitmap->s_nr_groups = nr_groups;
return bitmap;
@@ -1781,6 +1780,8 @@
if (!bh)
return;
+
+ mutex_lock(&sbi->s_alloc_mutex);
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
lvidiu = udf_sb_lvidiu(sbi);
@@ -1797,6 +1798,7 @@
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
+ mutex_unlock(&sbi->s_alloc_mutex);
}
static void udf_close_lvid(struct super_block *sb)
@@ -1809,6 +1811,7 @@
if (!bh)
return;
+ mutex_lock(&sbi->s_alloc_mutex);
lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
lvidiu = udf_sb_lvidiu(sbi);
lvidiu->impIdent.identSuffix[0] = UDF_OS_CLASS_UNIX;
@@ -1829,6 +1832,34 @@
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
mark_buffer_dirty(bh);
sbi->s_lvid_dirty = 0;
+ mutex_unlock(&sbi->s_alloc_mutex);
+}
+
+u64 lvid_get_unique_id(struct super_block *sb)
+{
+ struct buffer_head *bh;
+ struct udf_sb_info *sbi = UDF_SB(sb);
+ struct logicalVolIntegrityDesc *lvid;
+ struct logicalVolHeaderDesc *lvhd;
+ u64 uniqueID;
+ u64 ret;
+
+ bh = sbi->s_lvid_bh;
+ if (!bh)
+ return 0;
+
+ lvid = (struct logicalVolIntegrityDesc *)bh->b_data;
+ lvhd = (struct logicalVolHeaderDesc *)lvid->logicalVolContentsUse;
+
+ mutex_lock(&sbi->s_alloc_mutex);
+ ret = uniqueID = le64_to_cpu(lvhd->uniqueID);
+ if (!(++uniqueID & 0xFFFFFFFF))
+ uniqueID += 16;
+ lvhd->uniqueID = cpu_to_le64(uniqueID);
+ mutex_unlock(&sbi->s_alloc_mutex);
+ mark_buffer_dirty(bh);
+
+ return ret;
}
static void udf_sb_free_bitmap(struct udf_bitmap *bitmap)
@@ -1886,8 +1917,6 @@
struct kernel_lb_addr rootdir, fileset;
struct udf_sb_info *sbi;
- lock_kernel();
-
uopt.flags = (1 << UDF_FLAG_USE_AD_IN_ICB) | (1 << UDF_FLAG_STRICT);
uopt.uid = -1;
uopt.gid = -1;
@@ -1896,10 +1925,8 @@
uopt.dmode = UDF_INVALID_MODE;
sbi = kzalloc(sizeof(struct udf_sb_info), GFP_KERNEL);
- if (!sbi) {
- unlock_kernel();
+ if (!sbi)
return -ENOMEM;
- }
sb->s_fs_info = sbi;
@@ -1936,6 +1963,7 @@
sbi->s_fmode = uopt.fmode;
sbi->s_dmode = uopt.dmode;
sbi->s_nls_map = uopt.nls_map;
+ rwlock_init(&sbi->s_cred_lock);
if (uopt.session == 0xFFFFFFFF)
sbi->s_session = udf_get_last_session(sb);
@@ -2045,7 +2073,6 @@
goto error_out;
}
sb->s_maxbytes = MAX_LFS_FILESIZE;
- unlock_kernel();
return 0;
error_out:
@@ -2066,7 +2093,6 @@
kfree(sbi);
sb->s_fs_info = NULL;
- unlock_kernel();
return -EINVAL;
}
@@ -2105,8 +2131,6 @@
sbi = UDF_SB(sb);
- lock_kernel();
-
if (sbi->s_vat_inode)
iput(sbi->s_vat_inode);
if (sbi->s_partitions)
@@ -2122,8 +2146,6 @@
kfree(sbi->s_partmaps);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
-
- unlock_kernel();
}
static int udf_sync_fs(struct super_block *sb, int wait)
@@ -2186,8 +2208,6 @@
uint16_t ident;
struct spaceBitmapDesc *bm;
- lock_kernel();
-
loc.logicalBlockNum = bitmap->s_extPosition;
loc.partitionReferenceNum = UDF_SB(sb)->s_partition;
bh = udf_read_ptagged(sb, &loc, 0, &ident);
@@ -2224,10 +2244,7 @@
}
}
brelse(bh);
-
out:
- unlock_kernel();
-
return accum;
}
@@ -2240,8 +2257,7 @@
int8_t etype;
struct extent_position epos;
- lock_kernel();
-
+ mutex_lock(&UDF_SB(sb)->s_alloc_mutex);
epos.block = UDF_I(table)->i_location;
epos.offset = sizeof(struct unallocSpaceEntry);
epos.bh = NULL;
@@ -2250,8 +2266,7 @@
accum += (elen >> table->i_sb->s_blocksize_bits);
brelse(epos.bh);
-
- unlock_kernel();
+ mutex_unlock(&UDF_SB(sb)->s_alloc_mutex);
return accum;
}
diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c
index 1606478..b1d4488 100644
--- a/fs/udf/symlink.c
+++ b/fs/udf/symlink.c
@@ -27,7 +27,6 @@
#include <linux/mm.h>
#include <linux/stat.h>
#include <linux/pagemap.h>
-#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include "udf_i.h"
@@ -78,13 +77,16 @@
int err = -EIO;
unsigned char *p = kmap(page);
struct udf_inode_info *iinfo;
+ uint32_t pos;
- lock_kernel();
iinfo = UDF_I(inode);
+ pos = udf_block_map(inode, 0);
+
+ down_read(&iinfo->i_data_sem);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
symlink = iinfo->i_ext.i_data + iinfo->i_lenEAttr;
} else {
- bh = sb_bread(inode->i_sb, udf_block_map(inode, 0));
+ bh = sb_bread(inode->i_sb, pos);
if (!bh)
goto out;
@@ -95,14 +97,14 @@
udf_pc_to_char(inode->i_sb, symlink, inode->i_size, p);
brelse(bh);
- unlock_kernel();
+ up_read(&iinfo->i_data_sem);
SetPageUptodate(page);
kunmap(page);
unlock_page(page);
return 0;
out:
- unlock_kernel();
+ up_read(&iinfo->i_data_sem);
SetPageError(page);
kunmap(page);
unlock_page(page);
diff --git a/fs/udf/udf_i.h b/fs/udf/udf_i.h
index e58d1de..d1bd31e 100644
--- a/fs/udf/udf_i.h
+++ b/fs/udf/udf_i.h
@@ -1,6 +1,18 @@
#ifndef _UDF_I_H
#define _UDF_I_H
+/*
+ * The i_data_sem and i_mutex serve for protection of allocation information
+ * of a regular files and symlinks. This includes all extents belonging to
+ * the file/symlink, a fact whether data are in-inode or in external data
+ * blocks, preallocation, goal block information... When extents are read,
+ * i_mutex or i_data_sem must be held (for reading is enough in case of
+ * i_data_sem). When extents are changed, i_data_sem must be held for writing
+ * and also i_mutex must be held.
+ *
+ * For directories i_mutex is used for all the necessary protection.
+ */
+
struct udf_inode_info {
struct timespec i_crtime;
/* Physical address of inode */
@@ -21,6 +33,7 @@
struct long_ad *i_lad;
__u8 *i_data;
} i_ext;
+ struct rw_semaphore i_data_sem;
struct inode vfs_inode;
};
diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index d113b72..4858c19 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -2,6 +2,7 @@
#define __LINUX_UDF_SB_H
#include <linux/mutex.h>
+#include <linux/bitops.h>
/* Since UDF 2.01 is ISO 13346 based... */
#define UDF_SUPER_MAGIC 0x15013346
@@ -128,6 +129,8 @@
uid_t s_uid;
mode_t s_fmode;
mode_t s_dmode;
+ /* Lock protecting consistency of above permission settings */
+ rwlock_t s_cred_lock;
/* Root Info */
struct timespec s_record_time;
@@ -139,7 +142,7 @@
__u16 s_udfrev;
/* Miscellaneous flags */
- __u32 s_flags;
+ unsigned long s_flags;
/* Encoding info */
struct nls_table *s_nls_map;
@@ -161,8 +164,19 @@
int udf_compute_nr_groups(struct super_block *sb, u32 partition);
-#define UDF_QUERY_FLAG(X,Y) ( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
-#define UDF_SET_FLAG(X,Y) ( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
-#define UDF_CLEAR_FLAG(X,Y) ( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
+static inline int UDF_QUERY_FLAG(struct super_block *sb, int flag)
+{
+ return test_bit(flag, &UDF_SB(sb)->s_flags);
+}
+
+static inline void UDF_SET_FLAG(struct super_block *sb, int flag)
+{
+ set_bit(flag, &UDF_SB(sb)->s_flags);
+}
+
+static inline void UDF_CLEAR_FLAG(struct super_block *sb, int flag)
+{
+ clear_bit(flag, &UDF_SB(sb)->s_flags);
+}
#endif /* __LINUX_UDF_SB_H */
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 6995ab1..eba4820 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -111,6 +111,8 @@
};
/* super.c */
+
+__attribute__((format(printf, 3, 4)))
extern void udf_warning(struct super_block *, const char *, const char *, ...);
static inline void udf_updated_lvid(struct super_block *sb)
{
@@ -123,6 +125,7 @@
sb->s_dirt = 1;
UDF_SB(sb)->s_lvid_dirty = 1;
}
+extern u64 lvid_get_unique_id(struct super_block *sb);
/* namei.c */
extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
@@ -133,7 +136,6 @@
extern long udf_ioctl(struct file *, unsigned int, unsigned long);
/* inode.c */
extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
-extern int udf_sync_inode(struct inode *);
extern void udf_expand_file_adinicb(struct inode *, int, int *);
extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
extern struct buffer_head *udf_bread(struct inode *, int, int, int *);