lkml.org 
[lkml]   [2018]   [Jul]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/2] [v2] hfs/hfsplus: stop using timespec based interfaces
Date
The native HFS and HFS+ timestamps overflow in year 2040, two years after
the Unix y2038 overflow. On 32-bit systems, we currently go through a
conversion that overflows in 2038, while the VFS code is now capable of
representing a 64-bit time range.

This removes the unnecessary conversion, using 64-bit timestamps
consistently

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2: reword changelog, combine hfs and hfs+ patches
---
fs/hfs/hfs_fs.h | 4 ++--
fs/hfs/inode.c | 4 ++--
fs/hfsplus/hfsplus_fs.h | 4 ++--
fs/hfsplus/inode.c | 12 ++++++------
4 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 1af998fb522e..45cf1bccc1f2 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -273,9 +273,9 @@ static inline __be32 __hfs_u_to_mtime(time64_t ut)
#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_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(get_seconds())
+#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 2a16111d312f..b3309b83371a 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 7f0943e540a0..677ef7f9204d 100644
--- a/fs/hfsplus/hfsplus_fs.h
+++ b/fs/hfsplus/hfsplus_fs.h
@@ -555,8 +555,8 @@ static inline __be32 __hfsp_ut2mt(time64_t ut)
}

/* 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 c824f702feec..c0c8d433864f 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -493,9 +493,9 @@ 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)) {
@@ -531,9 +531,9 @@ 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");
--
2.9.0
\
 
 \ /
  Last update: 2018-07-10 23:43    [W:0.040 / U:0.240 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site