aboutsummaryrefslogtreecommitdiffstats
path: root/fs/cifs/inode.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/cifs/inode.c')
-rw-r--r--fs/cifs/inode.c81
1 files changed, 44 insertions, 37 deletions
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index a8797cc60805..f36b4e40e443 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -143,6 +143,7 @@ static void cifs_unix_info_to_inode(struct inode *inode,
inode->i_nlink = le64_to_cpu(info->Nlinks);
+ cifsInfo->server_eof = end_of_file;
spin_lock(&inode->i_lock);
if (is_size_safe_to_change(cifsInfo, end_of_file)) {
/*
@@ -276,7 +277,8 @@ int cifs_get_inode_info_unix(struct inode **pinode,
/* get new inode */
if (*pinode == NULL) {
- *pinode = cifs_new_inode(sb, &find_data.UniqueId);
+ __u64 unique_id = le64_to_cpu(find_data.UniqueId);
+ *pinode = cifs_new_inode(sb, &unique_id);
if (*pinode == NULL) {
rc = -ENOMEM;
goto cgiiu_exit;
@@ -605,12 +607,12 @@ int cifs_get_inode_info(struct inode **pinode,
inode->i_mode |= S_IFREG;
}
+ cifsInfo->server_eof = le64_to_cpu(pfindData->EndOfFile);
spin_lock(&inode->i_lock);
- if (is_size_safe_to_change(cifsInfo,
- le64_to_cpu(pfindData->EndOfFile))) {
+ if (is_size_safe_to_change(cifsInfo, cifsInfo->server_eof)) {
/* can not safely shrink the file size here if the
client is writing to it due to potential races */
- i_size_write(inode, le64_to_cpu(pfindData->EndOfFile));
+ i_size_write(inode, cifsInfo->server_eof);
/* 512 bytes (2**9) is the fake blocksize that must be
used for this calculation */
@@ -1125,7 +1127,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
goto mkdir_out;
}
- mode &= ~current->fs->umask;
+ mode &= ~current_umask();
rc = CIFSPOSIXCreate(xid, pTcon, SMB_O_DIRECTORY | SMB_O_CREAT,
mode, NULL /* netfid */, pInfo, &oplock,
full_path, cifs_sb->local_nls,
@@ -1138,6 +1140,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
cFYI(1, ("posix mkdir returned 0x%x", rc));
d_drop(direntry);
} else {
+ __u64 unique_id;
if (pInfo->Type == cpu_to_le32(-1)) {
/* no return info, go query for it */
kfree(pInfo);
@@ -1151,8 +1154,8 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, int mode)
else
direntry->d_op = &cifs_dentry_ops;
- newinode = cifs_new_inode(inode->i_sb,
- &pInfo->UniqueId);
+ unique_id = le64_to_cpu(pInfo->UniqueId);
+ newinode = cifs_new_inode(inode->i_sb, &unique_id);
if (newinode == NULL) {
kfree(pInfo);
goto mkdir_get_info;
@@ -1204,7 +1207,7 @@ mkdir_get_info:
if ((direntry->d_inode) && (direntry->d_inode->i_nlink < 2))
direntry->d_inode->i_nlink = 2;
- mode &= ~current->fs->umask;
+ mode &= ~current_umask();
/* must turn on setgid bit if parent dir has it */
if (inode->i_mode & S_ISGID)
mode |= S_ISGID;
@@ -1450,7 +1453,8 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
checking the UniqueId via FILE_INTERNAL_INFO */
unlink_target:
- if ((rc == -EACCES) || (rc == -EEXIST)) {
+ /* Try unlinking the target dentry if it's not negative */
+ if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) {
tmprc = cifs_unlink(target_dir, target_dentry);
if (tmprc)
goto cifs_rename_exit;
@@ -1753,6 +1757,7 @@ cifs_set_file_size(struct inode *inode, struct iattr *attrs,
}
if (rc == 0) {
+ cifsInode->server_eof = attrs->ia_size;
rc = cifs_vmtruncate(inode, attrs->ia_size);
cifs_truncate_page(inode->i_mapping, inode->i_size);
}
@@ -1792,20 +1797,21 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
goto out;
}
- if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
- /*
- Flush data before changing file size or changing the last
- write time of the file on the server. If the
- flush returns error, store it to report later and continue.
- BB: This should be smarter. Why bother flushing pages that
- will be truncated anyway? Also, should we error out here if
- the flush returns error?
- */
- rc = filemap_write_and_wait(inode->i_mapping);
- if (rc != 0) {
- cifsInode->write_behind_rc = rc;
- rc = 0;
- }
+ /*
+ * Attempt to flush data before changing attributes. We need to do
+ * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
+ * ownership or mode then we may also need to do this. Here, we take
+ * the safe way out and just do the flush on all setattr requests. If
+ * the flush returns error, store it to report later and continue.
+ *
+ * BB: This should be smarter. Why bother flushing pages that
+ * will be truncated anyway? Also, should we error out here if
+ * the flush returns error?
+ */
+ rc = filemap_write_and_wait(inode->i_mapping);
+ if (rc != 0) {
+ cifsInode->write_behind_rc = rc;
+ rc = 0;
}
if (attrs->ia_valid & ATTR_SIZE) {
@@ -1903,20 +1909,21 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
return -ENOMEM;
}
- if ((attrs->ia_valid & ATTR_MTIME) || (attrs->ia_valid & ATTR_SIZE)) {
- /*
- Flush data before changing file size or changing the last
- write time of the file on the server. If the
- flush returns error, store it to report later and continue.
- BB: This should be smarter. Why bother flushing pages that
- will be truncated anyway? Also, should we error out here if
- the flush returns error?
- */
- rc = filemap_write_and_wait(inode->i_mapping);
- if (rc != 0) {
- cifsInode->write_behind_rc = rc;
- rc = 0;
- }
+ /*
+ * Attempt to flush data before changing attributes. We need to do
+ * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
+ * ownership or mode then we may also need to do this. Here, we take
+ * the safe way out and just do the flush on all setattr requests. If
+ * the flush returns error, store it to report later and continue.
+ *
+ * BB: This should be smarter. Why bother flushing pages that
+ * will be truncated anyway? Also, should we error out here if
+ * the flush returns error?
+ */
+ rc = filemap_write_and_wait(inode->i_mapping);
+ if (rc != 0) {
+ cifsInode->write_behind_rc = rc;
+ rc = 0;
}
if (attrs->ia_valid & ATTR_SIZE) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.