From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/fs/udf/inode.c | 108 ++++++++++++++++++++++++++++++++++++++----------------
1 files changed, 76 insertions(+), 32 deletions(-)
diff --git a/kernel/fs/udf/inode.c b/kernel/fs/udf/inode.c
index ec8089a..d32b836 100644
--- a/kernel/fs/udf/inode.c
+++ b/kernel/fs/udf/inode.c
@@ -45,6 +45,13 @@
#define EXTENT_MERGE_SIZE 5
+#define FE_MAPPED_PERMS (FE_PERM_U_READ | FE_PERM_U_WRITE | FE_PERM_U_EXEC | \
+ FE_PERM_G_READ | FE_PERM_G_WRITE | FE_PERM_G_EXEC | \
+ FE_PERM_O_READ | FE_PERM_O_WRITE | FE_PERM_O_EXEC)
+
+#define FE_DELETE_PERMS (FE_PERM_U_DELETE | FE_PERM_G_DELETE | \
+ FE_PERM_O_DELETE)
+
static umode_t udf_convert_permissions(struct fileEntry *);
static int udf_update_inode(struct inode *, int);
static int udf_sync_inode(struct inode *inode);
@@ -150,8 +157,8 @@
truncate_inode_pages_final(&inode->i_data);
invalidate_inode_buffers(inode);
clear_inode(inode);
- kfree(iinfo->i_ext.i_data);
- iinfo->i_ext.i_data = NULL;
+ kfree(iinfo->i_data);
+ iinfo->i_data = NULL;
udf_clear_extent_cache(inode);
if (want_delete) {
udf_free_inode(inode);
@@ -191,10 +198,9 @@
return mpage_readpage(page, udf_get_block);
}
-static int udf_readpages(struct file *file, struct address_space *mapping,
- struct list_head *pages, unsigned nr_pages)
+static void udf_readahead(struct readahead_control *rac)
{
- return mpage_readpages(mapping, pages, nr_pages, udf_get_block);
+ mpage_readahead(rac, udf_get_block);
}
static int udf_write_begin(struct file *file, struct address_space *mapping,
@@ -230,7 +236,7 @@
const struct address_space_operations udf_aops = {
.readpage = udf_readpage,
- .readpages = udf_readpages,
+ .readahead = udf_readahead,
.writepage = udf_writepage,
.writepages = udf_writepages,
.write_begin = udf_write_begin,
@@ -278,14 +284,14 @@
kaddr = kmap_atomic(page);
memset(kaddr + iinfo->i_lenAlloc, 0x00,
PAGE_SIZE - iinfo->i_lenAlloc);
- memcpy(kaddr, iinfo->i_ext.i_data + iinfo->i_lenEAttr,
+ memcpy(kaddr, iinfo->i_data + iinfo->i_lenEAttr,
iinfo->i_lenAlloc);
flush_dcache_page(page);
SetPageUptodate(page);
kunmap_atomic(kaddr);
}
down_write(&iinfo->i_data_sem);
- memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0x00,
+ memset(iinfo->i_data + iinfo->i_lenEAttr, 0x00,
iinfo->i_lenAlloc);
iinfo->i_lenAlloc = 0;
if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_SHORT_AD))
@@ -303,8 +309,7 @@
lock_page(page);
down_write(&iinfo->i_data_sem);
kaddr = kmap_atomic(page);
- memcpy(iinfo->i_ext.i_data + iinfo->i_lenEAttr, kaddr,
- inode->i_size);
+ memcpy(iinfo->i_data + iinfo->i_lenEAttr, kaddr, inode->i_size);
kunmap_atomic(kaddr);
unlock_page(page);
iinfo->i_alloc_type = ICBTAG_FLAG_AD_IN_ICB;
@@ -392,8 +397,7 @@
}
mark_buffer_dirty_inode(dbh, inode);
- memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr, 0,
- iinfo->i_lenAlloc);
+ memset(iinfo->i_data + iinfo->i_lenEAttr, 0, iinfo->i_lenAlloc);
iinfo->i_lenAlloc = 0;
eloc.logicalBlockNum = *block;
eloc.partitionReferenceNum =
@@ -1259,7 +1263,7 @@
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
down_write(&iinfo->i_data_sem);
udf_clear_extent_cache(inode);
- memset(iinfo->i_ext.i_data + iinfo->i_lenEAttr + newsize,
+ memset(iinfo->i_data + iinfo->i_lenEAttr + newsize,
0x00, bsize - newsize -
udf_file_entry_alloc_offset(inode));
iinfo->i_lenAlloc = newsize;
@@ -1274,8 +1278,10 @@
truncate_setsize(inode, newsize);
down_write(&iinfo->i_data_sem);
udf_clear_extent_cache(inode);
- udf_truncate_extents(inode);
+ err = udf_truncate_extents(inode);
up_write(&iinfo->i_data_sem);
+ if (err)
+ return err;
}
update_time:
inode->i_mtime = inode->i_ctime = current_time(inode);
@@ -1408,7 +1414,7 @@
sizeof(struct extendedFileEntry));
if (ret)
goto out;
- memcpy(iinfo->i_ext.i_data,
+ memcpy(iinfo->i_data,
bh->b_data + sizeof(struct extendedFileEntry),
bs - sizeof(struct extendedFileEntry));
} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) {
@@ -1417,7 +1423,7 @@
ret = udf_alloc_i_data(inode, bs - sizeof(struct fileEntry));
if (ret)
goto out;
- memcpy(iinfo->i_ext.i_data,
+ memcpy(iinfo->i_data,
bh->b_data + sizeof(struct fileEntry),
bs - sizeof(struct fileEntry));
} else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_USE)) {
@@ -1430,7 +1436,7 @@
sizeof(struct unallocSpaceEntry));
if (ret)
goto out;
- memcpy(iinfo->i_ext.i_data,
+ memcpy(iinfo->i_data,
bh->b_data + sizeof(struct unallocSpaceEntry),
bs - sizeof(struct unallocSpaceEntry));
return 0;
@@ -1461,6 +1467,8 @@
else
inode->i_mode = udf_convert_permissions(fe);
inode->i_mode &= ~sbi->s_umask;
+ iinfo->i_extraPerms = le32_to_cpu(fe->permissions) & ~FE_MAPPED_PERMS;
+
read_unlock(&sbi->s_cred_lock);
link_count = le16_to_cpu(fe->fileLinkCount);
@@ -1488,6 +1496,8 @@
iinfo->i_lenEAttr = le32_to_cpu(fe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(fe->lengthAllocDescs);
iinfo->i_checkpoint = le32_to_cpu(fe->checkpoint);
+ iinfo->i_streamdir = 0;
+ iinfo->i_lenStreams = 0;
} else {
inode->i_blocks = le64_to_cpu(efe->logicalBlocksRecorded) <<
(inode->i_sb->s_blocksize_bits - 9);
@@ -1501,6 +1511,16 @@
iinfo->i_lenEAttr = le32_to_cpu(efe->lengthExtendedAttr);
iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
+
+ /* Named streams */
+ iinfo->i_streamdir = (efe->streamDirectoryICB.extLength != 0);
+ iinfo->i_locStreamdir =
+ lelb_to_cpu(efe->streamDirectoryICB.extLocation);
+ iinfo->i_lenStreams = le64_to_cpu(efe->objectSize);
+ if (iinfo->i_lenStreams >= inode->i_size)
+ iinfo->i_lenStreams -= inode->i_size;
+ else
+ iinfo->i_lenStreams = 0;
}
inode->i_generation = iinfo->i_unique;
@@ -1597,8 +1617,8 @@
static int udf_alloc_i_data(struct inode *inode, size_t size)
{
struct udf_inode_info *iinfo = UDF_I(inode);
- iinfo->i_ext.i_data = kmalloc(size, GFP_KERNEL);
- if (!iinfo->i_ext.i_data)
+ iinfo->i_data = kmalloc(size, GFP_KERNEL);
+ if (!iinfo->i_data)
return -ENOMEM;
return 0;
}
@@ -1620,6 +1640,23 @@
((flags & ICBTAG_FLAG_STICKY) ? S_ISVTX : 0);
return mode;
+}
+
+void udf_update_extra_perms(struct inode *inode, umode_t mode)
+{
+ struct udf_inode_info *iinfo = UDF_I(inode);
+
+ /*
+ * UDF 2.01 sec. 3.3.3.3 Note 2:
+ * In Unix, delete permission tracks write
+ */
+ iinfo->i_extraPerms &= ~FE_DELETE_PERMS;
+ if (mode & 0200)
+ iinfo->i_extraPerms |= FE_PERM_U_DELETE;
+ if (mode & 0020)
+ iinfo->i_extraPerms |= FE_PERM_G_DELETE;
+ if (mode & 0002)
+ iinfo->i_extraPerms |= FE_PERM_O_DELETE;
}
int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
@@ -1672,7 +1709,7 @@
use->lengthAllocDescs = cpu_to_le32(iinfo->i_lenAlloc);
memcpy(bh->b_data + sizeof(struct unallocSpaceEntry),
- iinfo->i_ext.i_data, inode->i_sb->s_blocksize -
+ iinfo->i_data, inode->i_sb->s_blocksize -
sizeof(struct unallocSpaceEntry));
use->descTag.tagIdent = cpu_to_le16(TAG_IDENT_USE);
crclen = sizeof(struct unallocSpaceEntry);
@@ -1694,10 +1731,7 @@
((inode->i_mode & 0070) << 2) |
((inode->i_mode & 0700) << 4);
- udfperms |= (le32_to_cpu(fe->permissions) &
- (FE_PERM_O_DELETE | FE_PERM_O_CHATTR |
- FE_PERM_G_DELETE | FE_PERM_G_CHATTR |
- FE_PERM_U_DELETE | FE_PERM_U_CHATTR));
+ udfperms |= iinfo->i_extraPerms;
fe->permissions = cpu_to_le32(udfperms);
if (S_ISDIR(inode->i_mode) && inode->i_nlink > 0)
@@ -1741,7 +1775,7 @@
if (iinfo->i_efe == 0) {
memcpy(bh->b_data + sizeof(struct fileEntry),
- iinfo->i_ext.i_data,
+ iinfo->i_data,
inode->i_sb->s_blocksize - sizeof(struct fileEntry));
fe->logicalBlocksRecorded = cpu_to_le64(lb_recorded);
@@ -1760,11 +1794,21 @@
crclen = sizeof(struct fileEntry);
} else {
memcpy(bh->b_data + sizeof(struct extendedFileEntry),
- iinfo->i_ext.i_data,
+ iinfo->i_data,
inode->i_sb->s_blocksize -
sizeof(struct extendedFileEntry));
- efe->objectSize = cpu_to_le64(inode->i_size);
+ efe->objectSize =
+ cpu_to_le64(inode->i_size + iinfo->i_lenStreams);
efe->logicalBlocksRecorded = cpu_to_le64(lb_recorded);
+
+ if (iinfo->i_streamdir) {
+ struct long_ad *icb_lad = &efe->streamDirectoryICB;
+
+ icb_lad->extLocation =
+ cpu_to_lelb(iinfo->i_locStreamdir);
+ icb_lad->extLength =
+ cpu_to_le32(inode->i_sb->s_blocksize);
+ }
udf_adjust_time(iinfo, inode->i_atime);
udf_adjust_time(iinfo, inode->i_mtime);
@@ -1939,10 +1983,10 @@
__udf_add_aext(inode, &nepos, &cp_loc, cp_len, 1);
udf_write_aext(inode, epos, &nepos.block,
- sb->s_blocksize | EXT_NEXT_EXTENT_ALLOCDECS, 0);
+ sb->s_blocksize | EXT_NEXT_EXTENT_ALLOCDESCS, 0);
} else {
__udf_add_aext(inode, epos, &nepos.block,
- sb->s_blocksize | EXT_NEXT_EXTENT_ALLOCDECS, 0);
+ sb->s_blocksize | EXT_NEXT_EXTENT_ALLOCDESCS, 0);
}
brelse(epos->bh);
@@ -2046,7 +2090,7 @@
struct udf_inode_info *iinfo = UDF_I(inode);
if (!epos->bh)
- ptr = iinfo->i_ext.i_data + epos->offset -
+ ptr = iinfo->i_data + epos->offset -
udf_file_entry_alloc_offset(inode) +
iinfo->i_lenEAttr;
else
@@ -2101,7 +2145,7 @@
unsigned int indirections = 0;
while ((etype = udf_current_aext(inode, epos, eloc, elen, inc)) ==
- (EXT_NEXT_EXTENT_ALLOCDECS >> 30)) {
+ (EXT_NEXT_EXTENT_ALLOCDESCS >> 30)) {
udf_pblk_t block;
if (++indirections > UDF_MAX_INDIR_EXTS) {
@@ -2138,7 +2182,7 @@
if (!epos->bh) {
if (!epos->offset)
epos->offset = udf_file_entry_alloc_offset(inode);
- ptr = iinfo->i_ext.i_data + epos->offset -
+ ptr = iinfo->i_data + epos->offset -
udf_file_entry_alloc_offset(inode) +
iinfo->i_lenEAttr;
alen = udf_file_entry_alloc_offset(inode) +
--
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