diff options
Diffstat (limited to 'fs/hfs/hfs_fs.h')
| -rw-r--r-- | fs/hfs/hfs_fs.h | 28 |
1 files changed, 22 insertions, 6 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) { |