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ksmbd: fix incorrect AllocationSize set in smb2_get_info

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commit 6cc2268f56 upstream.

If filesystem support sparse file, ksmbd should return allocated size
using ->i_blocks instead of stat->size. This fix generic/694 xfstests.

Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Namjae Jeon 2023-05-19 23:11:33 +09:00 • committed by Justin Hammond
parent 88a2cbdcfa
commit 563389ecf0
1 changed files with 3 additions and 18 deletions
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21
fs/ksmbd/smb2pdu.c
View file

@ -4359,21 +4359,6 @@ static int get_file_basic_info(struct smb2_query_info_rsp *rsp,
return 0;
}
static unsigned long long get_allocation_size(struct inode *inode,
struct kstat *stat)
{
unsigned long long alloc_size = 0;
if (!S_ISDIR(stat->mode)) {
if ((inode->i_blocks << 9) <= stat->size)
alloc_size = stat->size;
else
alloc_size = inode->i_blocks << 9;
}
return alloc_size;
}
static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
struct ksmbd_file *fp, void *rsp_org)
{
@ -4388,7 +4373,7 @@ static void get_file_standard_info(struct smb2_query_info_rsp *rsp,
sinfo = (struct smb2_file_standard_info *)rsp->Buffer;
delete_pending = ksmbd_inode_pending_delete(fp);
sinfo->AllocationSize = cpu_to_le64(get_allocation_size(inode, &stat));
sinfo->AllocationSize = cpu_to_le64(inode->i_blocks << 9);
sinfo->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
sinfo->NumberOfLinks = cpu_to_le32(get_nlink(&stat) - delete_pending);
sinfo->DeletePending = delete_pending;
@ -4453,7 +4438,7 @@ static int get_file_all_info(struct ksmbd_work *work,
file_info->Attributes = fp->f_ci->m_fattr;
file_info->Pad1 = 0;
file_info->AllocationSize =
cpu_to_le64(get_allocation_size(inode, &stat));
cpu_to_le64(inode->i_blocks << 9);
file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
file_info->NumberOfLinks =
cpu_to_le32(get_nlink(&stat) - delete_pending);
@ -4642,7 +4627,7 @@ static int get_file_network_open_info(struct smb2_query_info_rsp *rsp,
file_info->ChangeTime = cpu_to_le64(time);
file_info->Attributes = fp->f_ci->m_fattr;
file_info->AllocationSize =
cpu_to_le64(get_allocation_size(inode, &stat));
cpu_to_le64(inode->i_blocks << 9);
file_info->EndOfFile = S_ISDIR(stat.mode) ? 0 : cpu_to_le64(stat.size);
file_info->Reserved = cpu_to_le32(0);
rsp->OutputBufferLength =