NothingOSS/android_kernel_msm-6.1_nothing_sm7635
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

ksmbd: replace one-element arrays with flexible-array members

Browse source 
[ Upstream commit d272e01fa0a2f15c5c331a37cd99c6875c7b7186 ]

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
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2023-12-31 16:12:20 +09:00 • committed by Greg Kroah-Hartman
parent a507f147e6
commit ab69d3e8f7
3 changed files with 9 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

4
fs/smb/server/smb2pdu.c
View file

@ -3525,7 +3525,7 @@ 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;
@ -3777,7 +3777,7 @@ 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) {

2
fs/smb/server/smb2pdu.h
View file

@ -446,7 +446,7 @@ 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

12
fs/smb/server/smb_common.h
View file

@ -263,14 +263,14 @@ 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 {
@ -285,7 +285,7 @@ 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 {
@ -303,7 +303,7 @@ 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 {
@ -323,7 +323,7 @@ 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 {
@ -340,7 +340,7 @@ 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 {