diff options
47 files changed, 294 insertions, 72 deletions
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c index 08112fbcaece..ca243e658d71 100644 --- a/fs/9p/vfs_super.c +++ b/fs/9p/vfs_super.c @@ -69,8 +69,12 @@ v9fs_fill_super(struct super_block *sb, struct v9fs_session_info *v9ses, if (v9fs_proto_dotl(v9ses)) { sb->s_op = &v9fs_super_ops_dotl; sb->s_xattr = v9fs_xattr_handlers; - } else + } else { sb->s_op = &v9fs_super_ops; + sb->s_time_max = U32_MAX; + } + + sb->s_time_min = 0; ret = super_setup_bdi(sb); if (ret) diff --git a/fs/affs/amigaffs.c b/fs/affs/amigaffs.c index 14a6c1b90c9f..f708c45d5f66 100644 --- a/fs/affs/amigaffs.c +++ b/fs/affs/amigaffs.c @@ -375,7 +375,7 @@ affs_secs_to_datestamp(time64_t secs, struct affs_date *ds) u32 minute; s32 rem; - secs -= sys_tz.tz_minuteswest * 60 + ((8 * 365 + 2) * 24 * 60 * 60); + secs -= sys_tz.tz_minuteswest * 60 + AFFS_EPOCH_DELTA; if (secs < 0) secs = 0; days = div_s64_rem(secs, 86400, &rem); diff --git a/fs/affs/amigaffs.h b/fs/affs/amigaffs.h index f9bef9056659..81fb396d4dfa 100644 --- a/fs/affs/amigaffs.h +++ b/fs/affs/amigaffs.h @@ -32,6 +32,9 @@ #define AFFS_ROOT_BMAPS 25 +/* Seconds since Amiga epoch of 1978/01/01 to UNIX */ +#define AFFS_EPOCH_DELTA ((8 * 365 + 2) * 86400LL) + struct affs_date { __be32 days; __be32 mins; diff --git a/fs/affs/inode.c b/fs/affs/inode.c index 73598bff8506..a346cf7659f1 100644 --- a/fs/affs/inode.c +++ b/fs/affs/inode.c @@ -150,10 +150,10 @@ struct inode *affs_iget(struct super_block *sb, unsigned long ino) } inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec - = (be32_to_cpu(tail->change.days) * (24 * 60 * 60) + + = (be32_to_cpu(tail->change.days) * 86400LL + be32_to_cpu(tail->change.mins) * 60 + be32_to_cpu(tail->change.ticks) / 50 + - ((8 * 365 + 2) * 24 * 60 * 60)) + + AFFS_EPOCH_DELTA) + sys_tz.tz_minuteswest * 60; inode->i_mtime.tv_nsec = inode->i_ctime.tv_nsec = inode->i_atime.tv_nsec = 0; affs_brelse(bh); diff --git a/fs/affs/super.c b/fs/affs/super.c index e7d036efbaa1..cc463ae47c12 100644 --- a/fs/affs/super.c +++ b/fs/affs/super.c @@ -355,6 +355,10 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent) sb->s_op = &affs_sops; sb->s_flags |= SB_NODIRATIME; + sb->s_time_gran = NSEC_PER_SEC; + sb->s_time_min = sys_tz.tz_minuteswest * 60 + AFFS_EPOCH_DELTA; + sb->s_time_max = 86400LL * U32_MAX + 86400 + sb->s_time_min; + sbi = kzalloc(sizeof(struct affs_sb_info), GFP_KERNEL); if (!sbi) return -ENOMEM; diff --git a/fs/attr.c b/fs/attr.c index d22e8187477f..df28035aa23e 100644 --- a/fs/attr.c +++ b/fs/attr.c @@ -183,15 +183,18 @@ void setattr_copy(struct inode *inode, const struct iattr *attr) inode->i_uid = attr->ia_uid; if (ia_valid & ATTR_GID) inode->i_gid = attr->ia_gid; - if (ia_valid & ATTR_ATIME) - inode->i_atime = timespec64_trunc(attr->ia_atime, - inode->i_sb->s_time_gran); - if (ia_valid & ATTR_MTIME) - inode->i_mtime = timespec64_trunc(attr->ia_mtime, - inode->i_sb->s_time_gran); - if (ia_valid & ATTR_CTIME) - inode->i_ctime = timespec64_trunc(attr->ia_ctime, - inode->i_sb->s_time_gran); + if (ia_valid & ATTR_ATIME) { + inode->i_atime = timestamp_truncate(attr->ia_atime, + inode); + } + if (ia_valid & ATTR_MTIME) { + inode->i_mtime = timestamp_truncate(attr->ia_mtime, + inode); + } + if (ia_valid & ATTR_CTIME) { + inode->i_ctime = timestamp_truncate(attr->ia_ctime, + inode); + } if (ia_valid & ATTR_MODE) { umode_t mode = attr->ia_mode; diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c index 462d096ff3e9..64cdf4d8e424 100644 --- a/fs/befs/linuxvfs.c +++ b/fs/befs/linuxvfs.c @@ -893,6 +893,8 @@ befs_fill_super(struct super_block *sb, void *data, int silent) sb_set_blocksize(sb, (ulong) befs_sb->block_size); sb->s_op = &befs_sops; sb->s_export_op = &befs_export_operations; + sb->s_time_min = 0; + sb->s_time_max = 0xffffffffffffll; root = befs_iget(sb, iaddr2blockno(sb, &(befs_sb->root_dir))); if (IS_ERR(root)) { ret = PTR_ERR(root); diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c index 5e97bed073d7..f8ce1368218b 100644 --- a/fs/bfs/inode.c +++ b/fs/bfs/inode.c @@ -324,6 +324,8 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent) return -ENOMEM; mutex_init(&info->bfs_lock); s->s_fs_info = info; + s->s_time_min = 0; + s->s_time_max = U32_MAX; sb_set_blocksize(s, BFS_BSIZE); diff --git a/fs/ceph/super.c b/fs/ceph/super.c index ab4868c7308e..377fafc76f20 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -979,6 +979,8 @@ static int ceph_set_super(struct super_block *s, void *data) s->s_export_op = &ceph_export_ops; s->s_time_gran = 1; + s->s_time_min = 0; + s->s_time_max = U32_MAX; ret = set_anon_super(s, NULL); /* what is that second arg for? */ if (ret != 0) diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 4e2f74894e9b..e8afff702bb8 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -56,6 +56,15 @@ #include "dfs_cache.h" #endif +/* + * DOS dates from 1980/1/1 through 2107/12/31 + * Protocol specifications indicate the range should be to 119, which + * limits maximum year to 2099. But this range has not been checked. + */ +#define SMB_DATE_MAX (127<<9 | 12<<5 | 31) +#define SMB_DATE_MIN (0<<9 | 1<<5 | 1) +#define SMB_TIME_MAX (23<<11 | 59<<5 | 29) + int cifsFYI = 0; bool traceSMB; bool enable_oplocks = true; @@ -142,6 +151,7 @@ cifs_read_super(struct super_block *sb) struct inode *inode; struct cifs_sb_info *cifs_sb; struct cifs_tcon *tcon; + struct timespec64 ts; int rc = 0; cifs_sb = CIFS_SB(sb); @@ -161,6 +171,18 @@ cifs_read_super(struct super_block *sb) /* BB FIXME fix time_gran to be larger for LANMAN sessions */ sb->s_time_gran = 100; + if (tcon->unix_ext) { + ts = cifs_NTtimeToUnix(0); + sb->s_time_min = ts.tv_sec; + ts = cifs_NTtimeToUnix(cpu_to_le64(S64_MAX)); + sb->s_time_max = ts.tv_sec; + } else { + ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MIN), 0, 0); + sb->s_time_min = ts.tv_sec; + ts = cnvrtDosUnixTm(cpu_to_le16(SMB_DATE_MAX), cpu_to_le16(SMB_TIME_MAX), 0); + sb->s_time_max = ts.tv_sec; + } + sb->s_magic = CIFS_MAGIC_NUMBER; sb->s_op = &cifs_super_ops; sb->s_xattr = cifs_xattr_handlers; diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c index ed92958e842d..49c17ee18254 100644 --- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -949,8 +949,8 @@ static const int total_days_of_prev_months[] = { struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset) { struct timespec64 ts; - time64_t sec; - int min, days, month, year; + time64_t sec, days; + int min, day, month, year; u16 date = le16_to_cpu(le_date); u16 time = le16_to_cpu(le_time); SMB_TIME *st = (SMB_TIME *)&time; @@ -966,15 +966,15 @@ struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, int offset) sec += 60 * 60 * st->Hours; if (st->Hours > 24) cifs_dbg(VFS, "illegal hours %d\n", st->Hours); - days = sd->Day; + day = sd->Day; month = sd->Month; - if (days < 1 || days > 31 || month < 1 || month > 12) { - cifs_dbg(VFS, "illegal date, month %d day: %d\n", month, days); - days = clamp(days, 1, 31); + if (day < 1 || day > 31 || month < 1 || month > 12) { + cifs_dbg(VFS, "illegal date, month %d day: %d\n", month, day); + day = clamp(day, 1, 31); month = clamp(month, 1, 12); } month -= 1; - days += total_days_of_prev_months[month]; + days = day + total_days_of_prev_months[month]; days += 3652; /* account for difference in days between 1980 and 1970 */ year = sd->Year; days += year * 365; diff --git a/fs/coda/inode.c b/fs/coda/inode.c index 321f56e487cb..b1c70e2b9b1e 100644 --- a/fs/coda/inode.c +++ b/fs/coda/inode.c @@ -188,6 +188,9 @@ static int coda_fill_super(struct super_block *sb, void *data, int silent) sb->s_magic = CODA_SUPER_MAGIC; sb->s_op = &coda_super_operations; sb->s_d_op = &coda_dentry_operations; + sb->s_time_gran = 1; + sb->s_time_min = S64_MIN; + sb->s_time_max = S64_MAX; error = super_setup_bdi(sb); if (error) diff --git a/fs/configfs/inode.c b/fs/configfs/inode.c index ab0284321912..884dcf06cfbe 100644 --- a/fs/configfs/inode.c +++ b/fs/configfs/inode.c @@ -76,14 +76,14 @@ int configfs_setattr(struct dentry * dentry, struct iattr * iattr) if (ia_valid & ATTR_GID) sd_iattr->ia_gid = iattr->ia_gid; if (ia_valid & ATTR_ATIME) - sd_iattr->ia_atime = timespec64_trunc(iattr->ia_atime, - inode->i_sb->s_time_gran); + sd_iattr->ia_atime = timestamp_truncate(iattr->ia_atime, + inode); if (ia_valid & ATTR_MTIME) - sd_iattr->ia_mtime = timespec64_trunc(iattr->ia_mtime, - inode->i_sb->s_time_gran); + sd_iattr->ia_mtime = timestamp_truncate(iattr->ia_mtime, + inode); if (ia_valid & ATTR_CTIME) - sd_iattr->ia_ctime = timespec64_trunc(iattr->ia_ctime, - inode->i_sb->s_time_gran); + sd_iattr->ia_ctime = timestamp_truncate(iattr->ia_ctime, + inode); if (ia_valid & ATTR_MODE) { umode_t mode = iattr->ia_mode; diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c index 9352487bd0fc..4d1d8b7761ed 100644 --- a/fs/cramfs/inode.c +++ b/fs/cramfs/inode.c @@ -597,6 +597,8 @@ static int cramfs_finalize_super(struct super_block *sb, /* Set it all up.. */ sb->s_flags |= SB_RDONLY; + sb->s_time_min = 0; + sb->s_time_max = 0; sb->s_op = &cramfs_ops; root = get_cramfs_inode(sb, cramfs_root, 0); if (IS_ERR(root)) diff --git a/fs/efs/super.c b/fs/efs/super.c index 867fc24dee20..4a6ebff2af76 100644 --- a/fs/efs/super.c +++ b/fs/efs/super.c @@ -257,6 +257,8 @@ static int efs_fill_super(struct super_block *s, void *d, int silent) if (!sb) return -ENOMEM; s->s_fs_info = sb; + s->s_time_min = 0; + s->s_time_max = U32_MAX; s->s_magic = EFS_SUPER_MAGIC; if (!sb_set_blocksize(s, EFS_BLOCKSIZE)) { diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 44eb6e7eb492..baa36c6fb71e 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1002,6 +1002,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent) sb->s_maxbytes = ext2_max_size(sb->s_blocksize_bits); sb->s_max_links = EXT2_LINK_MAX; + sb->s_time_min = S32_MIN; + sb->s_time_max = S32_MAX; if (le32_to_cpu(es->s_rev_level) == EXT2_GOOD_OLD_REV) { sbi->s_inode_size = EXT2_GOOD_OLD_INODE_SIZE; diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 9c7f4036021b..42c6e4a5e673 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -832,11 +832,13 @@ static inline void ext4_decode_extra_time(struct timespec64 *time, #define EXT4_INODE_SET_XTIME(xtime, inode, raw_inode) \ do { \ - (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); \ if (EXT4_FITS_IN_INODE(raw_inode, EXT4_I(inode), xtime ## _extra)) {\ + (raw_inode)->xtime = cpu_to_le32((inode)->xtime.tv_sec); \ (raw_inode)->xtime ## _extra = \ ext4_encode_extra_time(&(inode)->xtime); \ } \ + else \ + (raw_inode)->xtime = cpu_to_le32(clamp_t(int32_t, (inode)->xtime.tv_sec, S32_MIN, S32_MAX)); \ } while (0) #define EXT4_EINODE_SET_XTIME(xtime, einode, raw_inode) \ @@ -1643,6 +1645,10 @@ static inline bool ext4_verity_in_progress(struct inode *inode) #define EXT4_GOOD_OLD_INODE_SIZE 128 +#define EXT4_EXTRA_TIMESTAMP_MAX (((s64)1 << 34) - 1 + S32_MIN) +#define EXT4_NON_EXTRA_TIMESTAMP_MAX S32_MAX +#define EXT4_TIMESTAMP_MIN S32_MIN + /* * Feature set definitions */ diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 27cd622676e7..3db5f17228b7 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4039,8 +4039,21 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent) sbi->s_inode_size); goto failed_mount; } - if (sbi->s_inode_size > EXT4_GOOD_OLD_INODE_SIZE) - sb->s_time_gran = 1 << (EXT4_EPOCH_BITS - 2); + /* + * i_atime_extra is the last extra field available for [acm]times in + * struct ext4_inode. Checking for that field should suffice to ensure + * we have extra space for all three. + */ + if (sbi->s_inode_size >= offsetof(struct ext4_inode, i_atime_extra) + + sizeof(((struct ext4_inode *)0)->i_atime_extra)) { + sb->s_time_gran = 1; + sb->s_time_max = EXT4_EXTRA_TIMESTAMP_MAX; + } else { + sb->s_time_gran = NSEC_PER_SEC; + sb->s_time_max = EXT4_NON_EXTRA_TIMESTAMP_MAX; + } + + sb->s_time_min = EXT4_TIMESTAMP_MIN; } sbi->s_desc_size = le16_to_cpu(es->s_desc_size); diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 39fffc19e00c..56efde9d3659 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -745,15 +745,18 @@ static void __setattr_copy(struct inode *inode, const struct iattr *attr) inode->i_uid = attr->ia_uid; if (ia_valid & ATTR_GID) inode->i_gid = attr->ia_gid; - if (ia_valid & ATTR_ATIME) - inode->i_atime = timespec64_trunc(attr->ia_atime, - inode->i_sb->s_time_gran); - if (ia_valid & ATTR_MTIME) - inode->i_mtime = timespec64_trunc(attr->ia_mtime, - inode->i_sb->s_time_gran); - if (ia_valid & ATTR_CTIME) - inode->i_ctime = timespec64_trunc(attr->ia_ctime, - inode->i_sb->s_time_gran); + if (ia_valid & ATTR_ATIME) { + inode->i_atime = timestamp_truncate(attr->ia_atime, + inode); + } + if (ia_valid & ATTR_MTIME) { + inode->i_mtime = timestamp_truncate(attr->ia_mtime, + inode); + } + if (ia_valid & ATTR_CTIME) { + inode->i_ctime = timestamp_truncate(attr->ia_ctime, + inode); + } if (ia_valid & ATTR_MODE) { umode_t mode = attr->ia_mode; diff --git a/fs/fat/inode.c b/fs/fat/inode.c index 05689198f5af..5f04c5c810fb 100644 --- a/fs/fat/inode.c +++ b/fs/fat/inode.c @@ -31,6 +31,11 @@ #define KB_IN_SECTORS 2 +/* DOS dates from 1980/1/1 through 2107/12/31 */ +#define FAT_DATE_MIN (0<<9 | 1<<5 | 1) +#define FAT_DATE_MAX (127<<9 | 12<<5 | 31) +#define FAT_TIME_MAX (23<<11 | 59<<5 | 29) + /* * A deserialized copy of the on-disk structure laid out in struct * fat_boot_sector. @@ -1605,6 +1610,7 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, int debug; long error; char buf[50]; + struct timespec64 ts; /* * GFP_KERNEL is ok here, because while we do hold the @@ -1698,6 +1704,12 @@ int fat_fill_super(struct super_block *sb, void *data, int silent, int isvfat, sbi->free_clus_valid = 0; sbi->prev_free = FAT_START_ENT; sb->s_maxbytes = 0xffffffff; + fat_time_fat2unix(sbi, &ts, 0, cpu_to_le16(FAT_DATE_MIN), 0); + sb->s_time_min = ts.tv_sec; + + fat_time_fat2unix(sbi, &ts, cpu_to_le16(FAT_TIME_MAX), + cpu_to_le16(FAT_DATE_MAX), 0); + sb->s_time_max = ts.tv_sec; if (!sbi->fat_length && bpb.fat32_length) { struct fat_boot_fsinfo *fsinfo; diff --git a/fs/freevxfs/vxfs_super.c b/fs/freevxfs/vxfs_super.c index a89f68c3cbed..578a5062706e 100644 --- a/fs/freevxfs/vxfs_super.c +++ b/fs/freevxfs/vxfs_super.c @@ -229,6 +229,8 @@ static int vxfs_fill_super(struct super_block *sbp, void *dp, int silent) sbp->s_op = &vxfs_super_ops; sbp->s_fs_info = infp; + sbp->s_time_min = 0; + sbp->s_time_max = U32_MAX; if (!vxfs_try_sb_magic(sbp, silent, 1, (__force __fs32)cpu_to_le32(VXFS_SUPER_MAGIC))) { diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h index ab2e7cc2ff33..1cca83218fb5 100644 --- a/fs/hpfs/hpfs_fn.h +++ b/fs/hpfs/hpfs_fn.h @@ -334,7 +334,7 @@ long hpfs_ioctl(struct file *file, unsigned cmd, unsigned long arg); * local time (HPFS) to GMT (Unix) */ -static inline time64_t local_to_gmt(struct super_block *s, time32_t t) +static inline time64_t local_to_gmt(struct super_block *s, time64_t t) { extern struct timezone sys_tz; return t + sys_tz.tz_minuteswest * 60 + hpfs_sb(s)->sb_timeshift; @@ -343,9 +343,7 @@ static inline time64_t local_to_gmt(struct super_block *s, time32_t t) static inline time32_t gmt_to_local(struct super_block *s, time64_t t) { extern struct timezone sys_tz; - t = t - sys_tz.tz_minuteswest * 60 - hpfs_sb(s)->sb_timeshift; - - return clamp_t(time64_t, t, 0, U32_MAX); + return t - sys_tz.tz_minuteswest * 60 - hpfs_sb(s)->sb_timeshift; } static inline time32_t local_get_seconds(struct super_block *s) diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c index 9db6d84f0d62..0a677a9aaf34 100644 --- a/fs/hpfs/super.c +++ b/fs/hpfs/super.c @@ -614,6 +614,8 @@ static int hpfs_fill_super(struct super_block *s, void *options, int silent) s->s_magic = HPFS_SUPER_MAGIC; s->s_op = &hpfs_sops; s->s_d_op = &hpfs_dentry_operations; + s->s_time_min = local_to_gmt(s, 0); + s->s_time_max = local_to_gmt(s, U32_MAX); sbi->sb_root = le32_to_cpu(superblock->root); sbi->sb_fs_size = le32_to_cpu(superblock->n_sectors); diff --git a/fs/inode.c b/fs/inode.c index 0f1e3b563c47..64bf28cf05cd 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -2167,6 +2167,37 @@ struct timespec64 timespec64_trunc(struct timespec64 t, unsigned gran) EXPORT_SYMBOL(timespec64_trunc); /** + * timestamp_truncate - Truncate timespec to a granularity + * @t: Timespec + * @inode: inode being updated + * + * Truncate a timespec to the granularity supported by the fs + * containing the inode. Always rounds down. gran must + * not be 0 nor greater than a second (NSEC_PER_SEC, or 10^9 ns). + */ +struct timespec64 timestamp_truncate(struct timespec64 t, struct inode *inode) +{ + struct super_block *sb = inode->i_sb; + unsigned int gran = sb->s_time_gran; + + t.tv_sec = clamp(t.tv_sec, sb->s_time_min, sb->s_time_max); + if (unlikely(t.tv_sec == sb->s_time_max || t.tv_sec == sb->s_time_min)) + t.tv_nsec = 0; + + /* Avoid division in the common cases 1 ns and 1 s. */ + if (gran == 1) + ; /* nothing */ + else if (gran == NSEC_PER_SEC) + t.tv_nsec = 0; + else if (gran > 1 && gran < NSEC_PER_SEC) + t.tv_nsec -= t.tv_nsec % gran; + else + WARN(1, "invalid file time granularity: %u", gran); + return t; +} +EXPORT_SYMBOL(timestamp_truncate); + +/** * current_time - Return FS time * @inode: inode. * @@ -2187,7 +2218,7 @@ struct timespec64 current_time(struct inode *inode) return now; } - return timespec64_trunc(now, inode->i_sb->s_time_gran); + return timestamp_truncate(now, inode); } EXPORT_SYMBOL(current_time); diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c index 9e30d8703735..62c0462dc89f 100644 --- a/fs/isofs/inode.c +++ b/fs/isofs/inode.c @@ -30,6 +30,9 @@ #include "isofs.h" #include "zisofs.h" +/* max tz offset is 13 hours */ +#define MAX_TZ_OFFSET (52*15*60) + #define BEQUIET static int isofs_hashi(const struct dentry *parent, struct qstr *qstr); @@ -801,6 +804,10 @@ root_found: */ s->s_maxbytes = 0x80000000000LL; + /* ECMA-119 timestamp from 1900/1/1 with tz offset */ + s->s_time_min = mktime64(1900, 1, 1, 0, 0, 0) - MAX_TZ_OFFSET; + s->s_time_max = mktime64(U8_MAX+1900, 12, 31, 23, 59, 59) + MAX_TZ_OFFSET; + /* Set this for reference. Its not currently used except on write which we don't have .. */ diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 8a20ddd25f2d..d0b59d03a7a9 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -590,6 +590,9 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent) sb->s_blocksize = PAGE_SIZE; sb->s_blocksize_bits = PAGE_SHIFT; sb->s_magic = JFFS2_SUPER_MAGIC; + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; + if (!sb_rdonly(sb)) jffs2_start_garbage_collect_thread(c); return 0; diff --git a/fs/jfs/super.c b/fs/jfs/super.c index f4e10cb9f734..b2dc4d1f9dcc 100644 --- a/fs/jfs/super.c +++ b/fs/jfs/super.c @@ -503,6 +503,8 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_fs_info = sbi; sb->s_max_links = JFS_LINK_MAX; + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; sbi->sb = sb; sbi->uid = INVALID_UID; sbi->gid = INVALID_GID; diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c index f3f3984cce80..f3eaa8869f42 100644 --- a/fs/kernfs/inode.c +++ b/fs/kernfs/inode.c @@ -158,12 +158,11 @@ static inline void set_default_inode_attr(struct inode *inode, umode_t mode) static inline void set_inode_attr(struct inode *inode, struct kernfs_iattrs *attrs) { - struct super_block *sb = inode->i_sb; inode->i_uid = attrs->ia_uid; inode->i_gid = attrs->ia_gid; - inode->i_atime = timespec64_trunc(attrs->ia_atime, sb->s_time_gran); - inode->i_mtime = timespec64_trunc(attrs->ia_mtime, sb->s_time_gran); - inode->i_ctime = timespec64_trunc(attrs->ia_ctime, sb->s_time_gran); + inode->i_atime = timestamp_truncate(attrs->ia_atime, inode); + inode->i_mtime = timestamp_truncate(attrs->ia_mtime, inode); + inode->i_ctime = timestamp_truncate(attrs->ia_ctime, inode); } static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode) diff --git a/fs/minix/inode.c b/fs/minix/inode.c index f96073f25432..7cb5fd38eb14 100644 --- a/fs/minix/inode.c +++ b/fs/minix/inode.c @@ -277,6 +277,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent) /* set up enough so that it can read an inode */ s->s_op = &minix_sops; + s->s_time_min = 0; + s->s_time_max = U32_MAX; root_inode = minix_iget(s, MINIX_ROOT_INO); if (IS_ERR(root_inode)) { ret = PTR_ERR(root_inode); diff --git a/fs/namespace.c b/fs/namespace.c index 227f7b343034..93c043245c46 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2466,6 +2466,26 @@ static void set_mount_attributes(struct mount *mnt, unsigned int mnt_flags) unlock_mount_hash(); } +static void mnt_warn_timestamp_expiry(struct path *mountpoint, struct vfsmount *mnt) +{ + struct super_block *sb = mnt->mnt_sb; + + if (!__mnt_is_readonly(mnt) && + (ktime_get_real_seconds() + TIME_UPTIME_SEC_MAX > sb->s_time_max)) { + char *buf = (char *)__get_free_page(GFP_KERNEL); + char *mntpath = buf ? d_path(mountpoint, buf, PAGE_SIZE) : ERR_PTR(-ENOMEM); + struct tm tm; + + time64_to_tm(sb->s_time_max, 0, &tm); + + pr_warn("Mounted %s file system at %s supports timestamps until %04ld (0x%llx)\n", + sb->s_type->name, mntpath, + tm.tm_year+1900, (unsigned long long)sb->s_time_max); + + free_page((unsigned long)buf); + } +} + /* * Handle reconfiguration of the mountpoint only without alteration of the * superblock it refers to. This is triggered by specifying MS_REMOUNT|MS_BIND @@ -2491,6 +2511,9 @@ static int do_reconfigure_mnt(struct path *path, unsigned int mnt_flags) if (ret == 0) set_mount_attributes(mnt, mnt_flags); up_write(&sb->s_umount); + + mnt_warn_timestamp_expiry(path, &mnt->mnt); + return ret; } @@ -2531,6 +2554,9 @@ static int do_remount(struct path *path, int ms_flags, int sb_flags, } up_write(&sb->s_umount); } + + mnt_warn_timestamp_expiry(path, &mnt->mnt); + put_fs_context(fc); return err; } @@ -2739,8 +2765,13 @@ static int do_new_mount_fc(struct fs_context *fc, struct path *mountpoint, return PTR_ERR(mnt); error = do_add_mount(real_mount(mnt), mountpoint, mnt_flags); - if (error < 0) + if (error < 0) { mntput(mnt); + return error; + } + + mnt_warn_timestamp_expiry(mountpoint, mnt); + return error; } diff --git a/fs/nfs/super.c b/fs/nfs/super.c index 703f595dce90..19a76cfa8b1f 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2382,6 +2382,15 @@ void nfs_fill_super(struct super_block *sb, struct nfs_mount_info *mount_info) sb->s_flags |= SB_POSIXACL; sb->s_time_gran = 1; sb->s_export_op = &nfs_export_ops; + } else + sb->s_time_gran = 1000; + + if (server->nfs_client->rpc_ops->version != 4) { + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; + } else { + sb->s_time_min = S64_MIN; + sb->s_time_max = S64_MAX; } nfs_initialise_sb(sb); @@ -2402,7 +2411,6 @@ static void nfs_clone_super(struct super_block *sb, sb->s_maxbytes = old_sb->s_maxbytes; sb->s_xattr = old_sb->s_xattr; sb->s_op = old_sb->s_op; - sb->s_time_gran = 1; sb->s_export_op = old_sb->s_export_op; if (server->nfs_client->rpc_ops->version != 2) { @@ -2410,6 +2418,16 @@ static void nfs_clone_super(struct super_block *sb, * so ourselves when necessary. */ sb->s_flags |= SB_POSIXACL; + sb->s_time_gran = 1; + } else + sb->s_time_gran = 1000; + + if (server->nfs_client->rpc_ops->version != 4) { + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; + } else { + sb->s_time_min = S64_MIN; + sb->s_time_max = S64_MAX; } nfs_initialise_sb(sb); diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c index 8baa34baf548..6c7388430ad3 100644 --- a/fs/ntfs/inode.c +++ b/fs/ntfs/inode.c @@ -2899,15 +2899,18 @@ int ntfs_setattr(struct dentry *dentry, struct iattr *attr) ia_valid |= ATTR_MTIME | ATTR_CTIME; } } - if (ia_valid & ATTR_ATIME) - vi->i_atime = timespec64_trunc(attr->ia_atime, - vi->i_sb->s_time_gran); - if (ia_valid & ATTR_MTIME) - vi->i_mtime = timespec64_trunc(attr->ia_mtime, - vi->i_sb->s_time_gran); - if (ia_valid & ATTR_CTIME) - vi->i_ctime = timespec64_trunc(attr->ia_ctime, - vi->i_sb->s_time_gran); + if (ia_valid & ATTR_ATIME) { + vi->i_atime = timestamp_truncate(attr->ia_atime, + vi); + } + if (ia_valid & ATTR_MTIME) { + vi->i_mtime = timestamp_truncate(attr->ia_mtime, + vi); + } + if (ia_valid & ATTR_CTIME) { + vi->i_ctime = timestamp_truncate(attr->ia_ctime, + vi); + } mark_inode_dirty(vi); out: return err; diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c index 08226a835ec3..b76ec6b88ded 100644 --- a/fs/omfs/inode.c +++ b/fs/omfs/inode.c @@ -478,6 +478,10 @@ static int omfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_maxbytes = 0xffffffff; + sb->s_time_gran = NSEC_PER_MSEC; + sb->s_time_min = 0; + sb->s_time_max = U64_MAX / MSEC_PER_SEC; + sb_set_blocksize(sb, 0x200); bh = sb_bread(sb, 0); diff --git a/fs/pstore/ram.c b/fs/pstore/ram.c index 2bb3468fc93a..8caff834f002 100644 --- a/fs/pstore/ram.c +++ b/fs/pstore/ram.c @@ -144,6 +144,7 @@ static int ramoops_read_kmsg_hdr(char *buffer, struct timespec64 *time, if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lld.%lu-%c\n%n", (time64_t *)&time->tv_sec, &time->tv_nsec, &data_type, &header_length) == 3) { + time->tv_nsec *= 1000; if (data_type == 'C') *compressed = true; else @@ -151,6 +152,7 @@ static int ramoops_read_kmsg_hdr(char *buffer, struct timespec64 *time, } else if (sscanf(buffer, RAMOOPS_KERNMSG_HDR "%lld.%lu\n%n", (time64_t *)&time->tv_sec, &time->tv_nsec, &header_length) == 2) { + time->tv_nsec *= 1000; *compressed = false; } else { time->tv_sec = 0; diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c index 922d083bbc7c..e8da1cde87b9 100644 --- a/fs/qnx4/inode.c +++ b/fs/qnx4/inode.c @@ -201,6 +201,8 @@ static int qnx4_fill_super(struct super_block *s, void *data, int silent) s->s_op = &qnx4_sops; s->s_magic = QNX4_SUPER_MAGIC; s->s_flags |= SB_RDONLY; /* Yup, read-only yet */ + s->s_time_min = 0; + s->s_time_max = U32_MAX; /* Check the superblock signature. Since the qnx4 code is dangerous, we should leave as quickly as possible diff --git a/fs/qnx6/inode.c b/fs/qnx6/inode.c index 0f8b0ff1ba43..345db56c98fd 100644 --- a/fs/qnx6/inode.c +++ b/fs/qnx6/inode.c @@ -429,6 +429,8 @@ mmi_success: s->s_op = &qnx6_sops; s->s_magic = QNX6_SUPER_MAGIC; s->s_flags |= SB_RDONLY; /* Yup, read-only yet */ + s->s_time_min = 0; + s->s_time_max = U32_MAX; /* ease the later tree level calculations */ sbi = QNX6_SB(s); diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c index ab028ea0e561..d69b4ac0ae2f 100644 --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -1976,6 +1976,9 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent) goto error_unlocked; } + s->s_time_min = 0; + s->s_time_max = U32_MAX; + rs = SB_DISK_SUPER_BLOCK(s); /* * Let's do basic sanity check to verify that underlying device is not diff --git a/fs/romfs/super.c b/fs/romfs/super.c index 7d580f7c3f1d..a42c0e3079dc 100644 --- a/fs/romfs/super.c +++ b/fs/romfs/super.c @@ -478,6 +478,8 @@ static int romfs_fill_super(struct super_block *sb, void *data, int silent) sb->s_maxbytes = 0xFFFFFFFF; sb->s_magic = ROMFS_MAGIC; sb->s_flags |= SB_RDONLY | SB_NOATIME; + sb->s_time_min = 0; + sb->s_time_max = 0; sb->s_op = &romfs_super_ops; #ifdef CONFIG_ROMFS_ON_MTD diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c index effa638d6d85..a9e9837617a9 100644 --- a/fs/squashfs/super.c +++ b/fs/squashfs/super.c @@ -183,6 +183,8 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent) (u64) le64_to_cpu(sblk->id_table_start)); sb->s_maxbytes = MAX_LFS_FILESIZE; + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; sb->s_flags |= SB_RDONLY; sb->s_op = &squashfs_super_ops; diff --git a/fs/super.c b/fs/super.c index 9459ba75a32e..2d679db9e8c7 100644 --- a/fs/super.c +++ b/fs/super.c @@ -258,6 +258,8 @@ static struct super_block *alloc_super(struct file_system_type *type, int flags, s->s_maxbytes = MAX_NON_LFS; s->s_op = &default_op; s->s_time_gran = 1000000000; + s->s_time_min = TIME64_MIN; + s->s_time_max = TIME64_MAX; s->cleancache_poolid = CLEANCACHE_NO_POOL; s->s_shrink.seeks = DEFAULT_SEEKS; diff --git a/fs/sysv/super.c b/fs/sysv/super.c index d788b1daa7eb..cc8e2ed155c8 100644 --- a/fs/sysv/super.c +++ b/fs/sysv/super.c @@ -368,7 +368,8 @@ static int sysv_fill_super(struct super_block *sb, void *data, int silent) sbi->s_block_base = 0; mutex_init(&sbi->s_lock); sb->s_fs_info = sbi; - + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; sb_set_blocksize(sb, BLOCK_SIZE); for (i = 0; i < ARRAY_SIZE(flavours) && !size; i++) { @@ -487,6 +488,8 @@ static int v7_fill_super(struct super_block *sb, void *data, int silent) sbi->s_type = FSTYPE_V7; mutex_init(&sbi->s_lock); sb->s_fs_info = sbi; + sb->s_time_min = 0; + sb->s_time_max = U32_MAX; sb_set_blocksize(sb, 512); diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 400970d740bb..cd52585c8f4f 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -1078,15 +1078,18 @@ static void do_attr_changes(struct inode *inode, const struct iattr *attr) inode->i_uid = attr->ia_uid; if (attr->ia_valid & ATTR_GID) inode->i_gid = attr->ia_gid; - if (attr->ia_valid & ATTR_ATIME) - inode->i_atime = timespec64_trunc(attr->ia_atime, - inode->i_sb->s_time_gran); - if (attr->ia_valid & ATTR_MTIME) - inode->i_mtime = timespec64_trunc(attr->ia_mtime, - inode->i_sb->s_time_gran); - if (attr->ia_valid & ATTR_CTIME) - inode->i_ctime = timespec64_trunc(attr->ia_ctime, - inode->i_sb->s_time_gran); + if (attr->ia_valid & ATTR_ATIME) { + inode->i_atime = timestamp_truncate(attr->ia_atime, + inode); + } + if (attr->ia_valid & ATTR_MTIME) { + inode->i_mtime = timestamp_truncate(attr->ia_mtime, + inode); + } + if (attr->ia_valid & ATTR_CTIME) { + inode->i_ctime = timestamp_truncate(attr->ia_ctime, + inode); + } if (attr->ia_valid & ATTR_MODE) { umode_t mode = attr->ia_mode; diff --git a/fs/ufs/super.c b/fs/ufs/super.c index 4ed0dca52ec8..1da0be667409 100644 --- a/fs/ufs/super.c +++ b/fs/ufs/super.c @@ -843,6 +843,10 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) sb->s_maxbytes = MAX_LFS_FILESIZE; + sb->s_time_gran = NSEC_PER_SEC; + sb->s_time_min = S32_MIN; + sb->s_time_max = S32_MAX; + switch (sbi->s_mount_opt & UFS_MOUNT_UFSTYPE) { case UFS_MOUNT_UFSTYPE_44BSD: UFSD("ufstype=44bsd\n"); @@ -861,6 +865,9 @@ static int ufs_fill_super(struct super_block *sb, void *data, int silent) uspi->s_fshift = 9; uspi->s_sbsize = super_block_size = 1536; uspi->s_sbbase = 0; + sb->s_time_gran = 1; + sb->s_time_min = S64_MIN; + sb->s_time_max = S64_MAX; flags |= UFS_TYPE_UFS2 | UFS_DE_44BSD | UFS_UID_44BSD | UFS_ST_44BSD | UFS_CG_44BSD; break; diff --git a/fs/utimes.c b/fs/utimes.c index 350c9c16ace1..1ba3f7883870 100644 --- a/fs/utimes.c +++ b/fs/utimes.c @@ -36,16 +36,14 @@ static int utimes_common(const struct path *path, struct timespec64 *times) if (times[0].tv_nsec == UTIME_OMIT) newattrs.ia_valid &= ~ATTR_ATIME; else if (times[0].tv_nsec != UTIME_NOW) { - newattrs.ia_atime.tv_sec = times[0].tv_sec; - newattrs.ia_atime.tv_nsec = times[0].tv_nsec; + newattrs.ia_atime = timestamp_truncate(times[0], inode); newattrs.ia_valid |= ATTR_ATIME_SET; } if (times[1].tv_nsec == UTIME_OMIT) newattrs.ia_valid &= ~ATTR_MTIME; else if (times[1].tv_nsec != UTIME_NOW) { - newattrs.ia_mtime.tv_sec = times[1].tv_sec; - newattrs.ia_mtime.tv_nsec = times[1].tv_nsec; + newattrs.ia_mtime = timestamp_truncate(times[1], inode); newattrs.ia_valid |= ATTR_MTIME_SET; } /* diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 391b4748cae3..8d1df9f8be07 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -1664,6 +1664,8 @@ xfs_fs_fill_super( sb->s_maxbytes = xfs_max_file_offset(sb->s_blocksize_bits); sb->s_max_links = XFS_MAXLINK; sb->s_time_gran = 1; + sb->s_time_min = S32_MIN; + sb->s_time_max = S32_MAX; sb->s_iflags |= SB_I_CGROUPWB; set_posix_acl_flag(sb); diff --git a/include/linux/fs.h b/include/linux/fs.h index ffe35d97afcb..866268c2c6e3 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -732,6 +732,8 @@ struct inode { void *i_private; /* fs or device private pointer */ } __randomize_layout; +struct timespec64 timestamp_truncate(struct timespec64 t, struct inode *inode); + static inline unsigned int i_blocksize(const struct inode *node) { return (1 << node->i_blkbits); @@ -1458,6 +1460,9 @@ struct super_block { /* Granularity of c/m/atime in ns (cannot be worse than a second) */ u32 s_time_gran; + /* Time limits for c/m/atime in seconds */ + time64_t s_time_min; + time64_t s_time_max; #ifdef CONFIG_FSNOTIFY __u32 s_fsnotify_mask; struct fsnotify_mark_connector __rcu *s_fsnotify_marks; diff --git a/include/linux/time64.h b/include/linux/time64.h index a620ee610b9f..19125489ae94 100644 --- a/include/linux/time64.h +++ b/include/linux/time64.h @@ -30,6 +30,8 @@ struct itimerspec64 { /* Located here for timespec[64]_valid_strict */ #define TIME64_MAX ((s64)~((u64)1 << 63)) +#define TIME64_MIN (-TIME64_MAX - 1) + #define KTIME_MAX ((s64)~((u64)1 << 63)) #define KTIME_SEC_MAX (KTIME_MAX / NSEC_PER_SEC) |