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cifs: use timespec64 internally

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In cifs, the timestamps are stored in memory in the cifs_fattr structure,
which uses the deprecated 'timespec' structure. Now that the VFS code
has moved on to 'timespec64', the next step is to change over the fattr
as well.

This also makes 32-bit and 64-bit systems behave the same way, and
no longer overflow the 32-bit time_t in year 2038.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Paulo Alcantara <palcantara@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Arnd Bergmann 2018-06-19 17:27:58 +02:00 committed by Steve French
parent ff361fda55
commit 95390201e7
6 changed files with 40 additions and 41 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
fs/cifs/cifsencrypt.c
View file

@ -452,7 +452,7 @@ find_timestamp(struct cifs_ses *ses)
unsigned char *blobptr;
unsigned char *blobend;
struct ntlmssp2_name *attrptr;
struct timespec ts;
struct timespec64 ts;
if (!ses->auth_key.len || !ses->auth_key.response)
return 0;
@ -477,7 +477,7 @@ find_timestamp(struct cifs_ses *ses)
blobptr += attrsize; /* advance attr value */
}
ktime_get_real_ts(&ts);
ktime_get_real_ts64(&ts);
return cpu_to_le64(cifs_UnixTimeToNT(ts));
}

6
fs/cifs/cifsglob.h
View file

@ -1544,9 +1544,9 @@ struct cifs_fattr {
dev_t cf_rdev;
unsigned int cf_nlink;
unsigned int cf_dtype;
struct timespec cf_atime;
struct timespec cf_mtime;
struct timespec cf_ctime;
struct timespec64 cf_atime;
struct timespec64 cf_mtime;
struct timespec64 cf_ctime;
};
static inline void free_dfs_info_param(struct dfs_info3_param *param)

6
fs/cifs/cifsproto.h
View file

@ -143,9 +143,9 @@ extern enum securityEnum select_sectype(struct TCP_Server_Info *server,
enum securityEnum requested);
extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses,
const struct nls_table *nls_cp);
extern struct timespec cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec);
extern struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601);
extern u64 cifs_UnixTimeToNT(struct timespec64);
extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time,
int offset);
extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock);
extern int cifs_get_writer(struct cifsInodeInfo *cinode);

12
fs/cifs/cifssmb.c
View file

@ -508,13 +508,13 @@ decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr)
* this requirement.
*/
int val, seconds, remain, result;
struct timespec ts;
unsigned long utc = ktime_get_real_seconds();
struct timespec64 ts;
time64_t utc = ktime_get_real_seconds();
ts = cnvrtDosUnixTm(rsp->SrvTime.Date,
rsp->SrvTime.Time, 0);
cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n",
(int)ts.tv_sec, (int)utc,
(int)(utc - ts.tv_sec));
cifs_dbg(FYI, "SrvTime %lld sec since 1970 (utc: %lld) diff: %lld\n",
ts.tv_sec, utc,
utc - ts.tv_sec);
val = (int)(utc - ts.tv_sec);
seconds = abs(val);
result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
@ -4082,7 +4082,7 @@ SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
if (rc) {
cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc);
} else if (data) {
struct timespec ts;
struct timespec64 ts;
__u32 time = le32_to_cpu(pSMBr->last_write_time);
/* decode response */

34
fs/cifs/inode.c
View file

@ -95,7 +95,6 @@ static void
cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
{
struct cifsInodeInfo *cifs_i = CIFS_I(inode);
struct timespec ts;
cifs_dbg(FYI, "%s: revalidating inode %llu\n",
__func__, cifs_i->uniqueid);
@ -114,8 +113,7 @@ cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr)
}
/* revalidate if mtime or size have changed */
ts = timespec64_to_timespec(inode->i_mtime);
if (timespec_equal(&ts, &fattr->cf_mtime) &&
if (timespec64_equal(&inode->i_mtime, &fattr->cf_mtime) &&
cifs_i->server_eof == fattr->cf_eof) {
cifs_dbg(FYI, "%s: inode %llu is unchanged\n",
__func__, cifs_i->uniqueid);
@ -164,9 +162,9 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
cifs_revalidate_cache(inode, fattr);
spin_lock(&inode->i_lock);
inode->i_atime = timespec_to_timespec64(fattr->cf_atime);
inode->i_mtime = timespec_to_timespec64(fattr->cf_mtime);
inode->i_ctime = timespec_to_timespec64(fattr->cf_ctime);
inode->i_atime = fattr->cf_atime;
inode->i_mtime = fattr->cf_mtime;
inode->i_ctime = fattr->cf_ctime;
inode->i_rdev = fattr->cf_rdev;
cifs_nlink_fattr_to_inode(inode, fattr);
inode->i_uid = fattr->cf_uid;
@ -327,8 +325,8 @@ cifs_create_dfs_fattr(struct cifs_fattr *fattr, struct super_block *sb)
fattr->cf_mode = S_IFDIR | S_IXUGO | S_IRWXU;
fattr->cf_uid = cifs_sb->mnt_uid;
fattr->cf_gid = cifs_sb->mnt_gid;
ktime_get_real_ts(&fattr->cf_mtime);
fattr->cf_mtime = timespec_trunc(fattr->cf_mtime, sb->s_time_gran);
ktime_get_real_ts64(&fattr->cf_mtime);
fattr->cf_mtime = timespec64_trunc(fattr->cf_mtime, sb->s_time_gran);
fattr->cf_atime = fattr->cf_ctime = fattr->cf_mtime;
fattr->cf_nlink = 2;
fattr->cf_flags |= CIFS_FATTR_DFS_REFERRAL;
@ -604,8 +602,8 @@ cifs_all_info_to_fattr(struct cifs_fattr *fattr, FILE_ALL_INFO *info,
if (info->LastAccessTime)
fattr->cf_atime = cifs_NTtimeToUnix(info->LastAccessTime);
else {
ktime_get_real_ts(&fattr->cf_atime);
fattr->cf_atime = timespec_trunc(fattr->cf_atime, sb->s_time_gran);
ktime_get_real_ts64(&fattr->cf_atime);
fattr->cf_atime = timespec64_trunc(fattr->cf_atime, sb->s_time_gran);
}
fattr->cf_ctime = cifs_NTtimeToUnix(info->ChangeTime);
@ -1125,14 +1123,14 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
if (attrs->ia_valid & ATTR_ATIME) {
set_time = true;
info_buf.LastAccessTime =
cpu_to_le64(cifs_UnixTimeToNT(timespec64_to_timespec(attrs->ia_atime)));
cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_atime));
} else
info_buf.LastAccessTime = 0;
if (attrs->ia_valid & ATTR_MTIME) {
set_time = true;
info_buf.LastWriteTime =
cpu_to_le64(cifs_UnixTimeToNT(timespec64_to_timespec(attrs->ia_mtime)));
cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_mtime));
} else
info_buf.LastWriteTime = 0;
@ -1145,7 +1143,7 @@ cifs_set_file_info(struct inode *inode, struct iattr *attrs, unsigned int xid,
if (set_time && (attrs->ia_valid & ATTR_CTIME)) {
cifs_dbg(FYI, "CIFS - CTIME changed\n");
info_buf.ChangeTime =
cpu_to_le64(cifs_UnixTimeToNT(timespec64_to_timespec(attrs->ia_ctime)));
cpu_to_le64(cifs_UnixTimeToNT(attrs->ia_ctime));
} else
info_buf.ChangeTime = 0;
@ -2071,8 +2069,8 @@ int cifs_getattr(const struct path *path, struct kstat *stat,
/* old CIFS Unix Extensions doesn't return create time */
if (CIFS_I(inode)->createtime) {
stat->result_mask |= STATX_BTIME;
stat->btime = timespec_to_timespec64(
cifs_NTtimeToUnix(cpu_to_le64(CIFS_I(inode)->createtime)));
stat->btime =
cifs_NTtimeToUnix(cpu_to_le64(CIFS_I(inode)->createtime));
}
stat->attributes_mask |= (STATX_ATTR_COMPRESSED | STATX_ATTR_ENCRYPTED);
@ -2278,17 +2276,17 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
args->gid = INVALID_GID; /* no change */
if (attrs->ia_valid & ATTR_ATIME)
args->atime = cifs_UnixTimeToNT(timespec64_to_timespec(attrs->ia_atime));
args->atime = cifs_UnixTimeToNT(attrs->ia_atime);
else
args->atime = NO_CHANGE_64;
if (attrs->ia_valid & ATTR_MTIME)
args->mtime = cifs_UnixTimeToNT(timespec64_to_timespec(attrs->ia_mtime));
args->mtime = cifs_UnixTimeToNT(attrs->ia_mtime);
else
args->mtime = NO_CHANGE_64;
if (attrs->ia_valid & ATTR_CTIME)
args->ctime = cifs_UnixTimeToNT(timespec64_to_timespec(attrs->ia_ctime));
args->ctime = cifs_UnixTimeToNT(attrs->ia_ctime);
else
args->ctime = NO_CHANGE_64;

19
fs/cifs/netmisc.c
View file

@ -918,10 +918,10 @@ smbCalcSize(void *buf, struct TCP_Server_Info *server)
* Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
* into Unix UTC (based 1970-01-01, in seconds).
*/
struct timespec
struct timespec64
cifs_NTtimeToUnix(__le64 ntutc)
{
struct timespec ts;
struct timespec64 ts;
/* BB what about the timezone? BB */
/* Subtract the NTFS time offset, then convert to 1s intervals. */
@ -935,12 +935,12 @@ cifs_NTtimeToUnix(__le64 ntutc)
*/
if (t < 0) {
abs_t = -t;
ts.tv_nsec = (long)(do_div(abs_t, 10000000) * 100);
ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
ts.tv_nsec = -ts.tv_nsec;
ts.tv_sec = -abs_t;
} else {
abs_t = t;
ts.tv_nsec = (long)do_div(abs_t, 10000000) * 100;
ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
ts.tv_sec = abs_t;
}
@ -949,7 +949,7 @@ cifs_NTtimeToUnix(__le64 ntutc)
/* Convert the Unix UTC into NT UTC. */
u64
cifs_UnixTimeToNT(struct timespec t)
cifs_UnixTimeToNT(struct timespec64 t)
{
/* Convert to 100ns intervals and then add the NTFS time offset. */
return (u64) t.tv_sec * 10000000 + t.tv_nsec/100 + NTFS_TIME_OFFSET;
@ -959,10 +959,11 @@ static const int total_days_of_prev_months[] = {
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334
};
struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
{
struct timespec ts;
int sec, min, days, month, year;
struct timespec64 ts;
time64_t sec;
int min, days, month, year;
u16 date = le16_to_cpu(le_date);
u16 time = le16_to_cpu(le_time);
SMB_TIME *st = (SMB_TIME *)&time;
@ -973,7 +974,7 @@ struct timespec cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset)
sec = 2 * st->TwoSeconds;
min = st->Minutes;
if ((sec > 59) || (min > 59))
cifs_dbg(VFS, "illegal time min %d sec %d\n", min, sec);
cifs_dbg(VFS, "illegal time min %d sec %lld\n", min, sec);
sec += (min * 60);
sec += 60 * 60 * st->Hours;
if (st->Hours > 24)