diff options
| -rw-r--r-- | fs/hfs/hfs_fs.h | 28 | ||||
| -rw-r--r-- | fs/hfs/inode.c | 4 | ||||
| -rw-r--r-- | fs/hfsplus/hfsplus_fs.h | 28 | ||||
| -rw-r--r-- | fs/hfsplus/inode.c | 12 |
4 files changed, 53 insertions, 19 deletions
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h index 6d0783e2e276..f71c384064c8 100644 --- a/fs/hfs/hfs_fs.h +++ b/fs/hfs/hfs_fs.h @@ -242,19 +242,35 @@ extern void hfs_mark_mdb_dirty(struct super_block *sb); /* * There are two time systems. Both are based on seconds since * a particular time/date. - * Unix: unsigned lil-endian since 00:00 GMT, Jan. 1, 1970 + * Unix: signed little-endian since 00:00 GMT, Jan. 1, 1970 * mac: unsigned big-endian since 00:00 GMT, Jan. 1, 1904 * + * HFS implementations are highly inconsistent, this one matches the + * traditional behavior of 64-bit Linux, giving the most useful + * time range between 1970 and 2106, by treating any on-disk timestamp + * under HFS_UTC_OFFSET (Jan 1 1970) as a time between 2040 and 2106. */ -#define __hfs_u_to_mtime(sec) cpu_to_be32(sec + 2082844800U - sys_tz.tz_minuteswest * 60) -#define __hfs_m_to_utime(sec) (be32_to_cpu(sec) - 2082844800U + sys_tz.tz_minuteswest * 60) +#define HFS_UTC_OFFSET 2082844800U +static inline time64_t __hfs_m_to_utime(__be32 mt) +{ + time64_t ut = (u32)(be32_to_cpu(mt) - HFS_UTC_OFFSET); + + return ut + sys_tz.tz_minuteswest * 60; +} + +static inline __be32 __hfs_u_to_mtime(time64_t ut) +{ + ut -= sys_tz.tz_minuteswest * 60; + + return cpu_to_be32(lower_32_bits(ut) + HFS_UTC_OFFSET); +} #define HFS_I(inode) (container_of(inode, struct hfs_inode_info, vfs_inode)) #define HFS_SB(sb) ((struct hfs_sb_info *)(sb)->s_fs_info) -#define hfs_m_to_utime(time) (struct timespec){ .tv_sec = __hfs_m_to_utime(time) } -#define hfs_u_to_mtime(time) __hfs_u_to_mtime((time).tv_sec) -#define hfs_mtime() __hfs_u_to_mtime(get_seconds()) +#define hfs_m_to_utime(time) (struct timespec64){ .tv_sec = __hfs_m_to_utime(time) } +#define hfs_u_to_mtime(time) __hfs_u_to_mtime((time).tv_sec) +#define hfs_mtime() __hfs_u_to_mtime(ktime_get_real_seconds()) static inline const char *hfs_mdb_name(struct super_block *sb) { diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c index da243c84e93b..2f224b98ee94 100644 --- a/fs/hfs/inode.c +++ b/fs/hfs/inode.c @@ -351,7 +351,7 @@ static int hfs_read_inode(struct inode *inode, void *data) inode->i_mode &= ~hsb->s_file_umask; inode->i_mode |= S_IFREG; inode->i_ctime = inode->i_atime = inode->i_mtime = - timespec_to_timespec64(hfs_m_to_utime(rec->file.MdDat)); + hfs_m_to_utime(rec->file.MdDat); inode->i_op = &hfs_file_inode_operations; inode->i_fop = &hfs_file_operations; inode->i_mapping->a_ops = &hfs_aops; @@ -362,7 +362,7 @@ static int hfs_read_inode(struct inode *inode, void *data) HFS_I(inode)->fs_blocks = 0; inode->i_mode = S_IFDIR | (S_IRWXUGO & ~hsb->s_dir_umask); inode->i_ctime = inode->i_atime = inode->i_mtime = - timespec_to_timespec64(hfs_m_to_utime(rec->dir.MdDat)); + hfs_m_to_utime(rec->dir.MdDat); inode->i_op = &hfs_dir_inode_operations; inode->i_fop = &hfs_dir_operations; break; diff --git a/fs/hfsplus/hfsplus_fs.h b/fs/hfsplus/hfsplus_fs.h index b8471bf05def..3b03fff68543 100644 --- a/fs/hfsplus/hfsplus_fs.h +++ b/fs/hfsplus/hfsplus_fs.h @@ -533,13 +533,31 @@ int hfsplus_submit_bio(struct super_block *sb, sector_t sector, void *buf, void **data, int op, int op_flags); int hfsplus_read_wrapper(struct super_block *sb); -/* time macros */ -#define __hfsp_mt2ut(t) (be32_to_cpu(t) - 2082844800U) -#define __hfsp_ut2mt(t) (cpu_to_be32(t + 2082844800U)) +/* + * time helpers: convert between 1904-base and 1970-base timestamps + * + * HFS+ implementations are highly inconsistent, this one matches the + * traditional behavior of 64-bit Linux, giving the most useful + * time range between 1970 and 2106, by treating any on-disk timestamp + * under HFSPLUS_UTC_OFFSET (Jan 1 1970) as a time between 2040 and 2106. + */ +#define HFSPLUS_UTC_OFFSET 2082844800U + +static inline time64_t __hfsp_mt2ut(__be32 mt) +{ + time64_t ut = (u32)(be32_to_cpu(mt) - HFSPLUS_UTC_OFFSET); + + return ut; +} + +static inline __be32 __hfsp_ut2mt(time64_t ut) +{ + return cpu_to_be32(lower_32_bits(ut) + HFSPLUS_UTC_OFFSET); +} /* compatibility */ -#define hfsp_mt2ut(t) (struct timespec){ .tv_sec = __hfsp_mt2ut(t) } +#define hfsp_mt2ut(t) (struct timespec64){ .tv_sec = __hfsp_mt2ut(t) } #define hfsp_ut2mt(t) __hfsp_ut2mt((t).tv_sec) -#define hfsp_now2mt() __hfsp_ut2mt(get_seconds()) +#define hfsp_now2mt() __hfsp_ut2mt(ktime_get_real_seconds()) #endif diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c index d131c8ea7eb6..94bd83b36644 100644 --- a/fs/hfsplus/inode.c +++ b/fs/hfsplus/inode.c @@ -504,9 +504,9 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) hfsplus_get_perms(inode, &folder->permissions, 1); set_nlink(inode, 1); inode->i_size = 2 + be32_to_cpu(folder->valence); - inode->i_atime = timespec_to_timespec64(hfsp_mt2ut(folder->access_date)); - inode->i_mtime = timespec_to_timespec64(hfsp_mt2ut(folder->content_mod_date)); - inode->i_ctime = timespec_to_timespec64(hfsp_mt2ut(folder->attribute_mod_date)); + inode->i_atime = hfsp_mt2ut(folder->access_date); + inode->i_mtime = hfsp_mt2ut(folder->content_mod_date); + inode->i_ctime = hfsp_mt2ut(folder->attribute_mod_date); HFSPLUS_I(inode)->create_date = folder->create_date; HFSPLUS_I(inode)->fs_blocks = 0; if (folder->flags & cpu_to_be16(HFSPLUS_HAS_FOLDER_COUNT)) { @@ -542,9 +542,9 @@ int hfsplus_cat_read_inode(struct inode *inode, struct hfs_find_data *fd) init_special_inode(inode, inode->i_mode, be32_to_cpu(file->permissions.dev)); } - inode->i_atime = timespec_to_timespec64(hfsp_mt2ut(file->access_date)); - inode->i_mtime = timespec_to_timespec64(hfsp_mt2ut(file->content_mod_date)); - inode->i_ctime = timespec_to_timespec64(hfsp_mt2ut(file->attribute_mod_date)); + inode->i_atime = hfsp_mt2ut(file->access_date); + inode->i_mtime = hfsp_mt2ut(file->content_mod_date); + inode->i_ctime = hfsp_mt2ut(file->attribute_mod_date); HFSPLUS_I(inode)->create_date = file->create_date; } else { pr_err("bad catalog entry used to create inode\n"); |