diff options
| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2022-11-15 09:35:10 -0600 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2022-12-02 13:14:29 -0800 |
| commit | d272e01fa0a2f15c5c331a37cd99c6875c7b7186 (patch) | |
| tree | 2d3befec8296d9dd9d1445d72a2441c2a9f8b945 /fs/ksmbd | |
| parent | d662198e03bc7fb4635156ee7e8b8d325e2d8512 (diff) | |
ksmbd: replace one-element arrays with flexible-array members
One-element arrays are deprecated, and we are replacing them with flexible
array members instead. So, replace one-element arrays with flexible-array
members in multiple structs in fs/ksmbd/smb_common.h and one in
fs/ksmbd/smb2pdu.h.
Important to mention is that doing a build before/after this patch results
in no binary output differences.
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines
on memcpy() and help us make progress towards globally enabling
-fstrict-flex-arrays=3 [1].
Link: https://github.com/KSPP/linux/issues/242
Link: https://github.com/KSPP/linux/issues/79
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/Y3OxronfaPYv9qGP@work
Diffstat (limited to 'fs/ksmbd')
| -rw-r--r-- | fs/ksmbd/smb2pdu.c | 4 | ||||
| -rw-r--r-- | fs/ksmbd/smb2pdu.h | 2 | ||||
| -rw-r--r-- | fs/ksmbd/smb_common.h | 12 |
3 files changed, 9 insertions, 9 deletions
diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c index b2fc85d440d0..31f00cec5255 100644 --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -3438,7 +3438,7 @@ static int smb2_populate_readdir_entry(struct ksmbd_conn *conn, int info_level, goto free_conv_name; } - struct_sz = readdir_info_level_struct_sz(info_level) - 1 + conv_len; + struct_sz = readdir_info_level_struct_sz(info_level) + conv_len; next_entry_offset = ALIGN(struct_sz, KSMBD_DIR_INFO_ALIGNMENT); d_info->last_entry_off_align = next_entry_offset - struct_sz; @@ -3690,7 +3690,7 @@ static int reserve_populate_dentry(struct ksmbd_dir_info *d_info, return -EOPNOTSUPP; conv_len = (d_info->name_len + 1) * 2; - next_entry_offset = ALIGN(struct_sz - 1 + conv_len, + next_entry_offset = ALIGN(struct_sz + conv_len, KSMBD_DIR_INFO_ALIGNMENT); if (next_entry_offset > d_info->out_buf_len) { diff --git a/fs/ksmbd/smb2pdu.h b/fs/ksmbd/smb2pdu.h index 092fdd3f8750..aa5dbe54f5a1 100644 --- a/fs/ksmbd/smb2pdu.h +++ b/fs/ksmbd/smb2pdu.h @@ -443,7 +443,7 @@ struct smb2_posix_info { /* SidBuffer contain two sids (UNIX user sid(16), UNIX group sid(16)) */ u8 SidBuffer[32]; __le32 name_len; - u8 name[1]; + u8 name[]; /* * var sized owner SID * var sized group SID diff --git a/fs/ksmbd/smb_common.h b/fs/ksmbd/smb_common.h index 318c16fa81da..e663ab9ea759 100644 --- a/fs/ksmbd/smb_common.h +++ b/fs/ksmbd/smb_common.h @@ -277,14 +277,14 @@ struct file_directory_info { __le64 AllocationSize; __le32 ExtFileAttributes; __le32 FileNameLength; - char FileName[1]; + char FileName[]; } __packed; /* level 0x101 FF resp data */ struct file_names_info { __le32 NextEntryOffset; __u32 FileIndex; __le32 FileNameLength; - char FileName[1]; + char FileName[]; } __packed; /* level 0xc FF resp data */ struct file_full_directory_info { @@ -299,7 +299,7 @@ struct file_full_directory_info { __le32 ExtFileAttributes; __le32 FileNameLength; __le32 EaSize; - char FileName[1]; + char FileName[]; } __packed; /* level 0x102 FF resp */ struct file_both_directory_info { @@ -317,7 +317,7 @@ struct file_both_directory_info { __u8 ShortNameLength; __u8 Reserved; __u8 ShortName[24]; - char FileName[1]; + char FileName[]; } __packed; /* level 0x104 FFrsp data */ struct file_id_both_directory_info { @@ -337,7 +337,7 @@ struct file_id_both_directory_info { __u8 ShortName[24]; __le16 Reserved2; __le64 UniqueId; - char FileName[1]; + char FileName[]; } __packed; struct file_id_full_dir_info { @@ -354,7 +354,7 @@ struct file_id_full_dir_info { __le32 EaSize; /* EA size */ __le32 Reserved; __le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/ - char FileName[1]; + char FileName[]; } __packed; /* level 0x105 FF rsp data */ struct smb_version_values { |