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ksmbd: preserve compression state in set basic info

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FILE_ATTRIBUTE_COMPRESSED is controlled by FSCTL_SET_COMPRESSION and should
not be set directly through FileBasicInformation.  Keep the existing
compression state when updating basic attributes and ignore the compressed
bit supplied by the client in the basic information request.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Namjae Jeon 2026-07-08 21:46:16 +09:00
parent 0fb327626a
commit bea20b6516
1 changed files with 5 additions and 2 deletions
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7
fs/smb/server/smb2pdu.c
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@ -7031,6 +7031,8 @@ static int set_file_basic_info(struct ksmbd_file *fp,
struct file *filp;
struct inode *inode;
struct mnt_idmap *idmap;
__le32 attrs_mask = FILE_ATTRIBUTE_DIRECTORY_LE |
FILE_ATTRIBUTE_COMPRESSED_LE;
int rc = 0;
if (!(fp->daccess & FILE_WRITE_ATTRIBUTES_LE))
@ -7068,8 +7070,9 @@ static int set_file_basic_info(struct ksmbd_file *fp,
}
if (!(S_ISDIR(inode->i_mode) && file_info->Attributes == FILE_ATTRIBUTE_NORMAL_LE))
fp->f_ci->m_fattr = file_info->Attributes |
(fp->f_ci->m_fattr & FILE_ATTRIBUTE_DIRECTORY_LE);
fp->f_ci->m_fattr =
(file_info->Attributes & ~FILE_ATTRIBUTE_COMPRESSED_LE) |
(fp->f_ci->m_fattr & attrs_mask);
}
if (test_share_config_flag(share, KSMBD_SHARE_FLAG_STORE_DOS_ATTRS) &&