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authorLinus Torvalds <torvalds@linux-foundation.org>2025-05-29 10:38:23 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2025-05-29 10:38:23 -0700
commite0797d3b91de75b6c95b4a0e0649ebd4aac1d9d1 (patch)
treea22342980cf7f1582fa907561161345c610da021 /fs
parentdb340159f19ae083afb33fce0aaadc77c6b0d547 (diff)
parentd5a2693f93e497589637bb746ef19ac8aecb6fb5 (diff)
Merge tag 'fs_for_v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fsHEADmaster
Pull ext2 and isofs updates from Jan Kara: - isofs fix of handling of particularly formatted Rock Ridge timestamps - Add deprecation notice about support of DAX in ext2 filesystem driver * tag 'fs_for_v6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: ext2: Deprecate DAX isofs: fix Y2038 and Y2156 issues in Rock Ridge TF entry
Diffstat (limited to 'fs')
-rw-r--r--fs/ext2/super.c3
-rw-r--r--fs/isofs/inode.c7
-rw-r--r--fs/isofs/isofs.h4
-rw-r--r--fs/isofs/rock.c40
-rw-r--r--fs/isofs/rock.h6
-rw-r--r--fs/isofs/util.c49
6 files changed, 66 insertions, 43 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 28ff47ec4be6..121e634c792a 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -601,7 +601,8 @@ static int ext2_parse_param(struct fs_context *fc, struct fs_parameter *param)
case Opt_dax:
#ifdef CONFIG_FS_DAX
ext2_msg_fc(fc, KERN_WARNING,
- "DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
+ "DAX enabled. Warning: DAX support in ext2 driver is deprecated"
+ " and will be removed at the end of 2025. Please use ext4 driver instead.");
ctx_set_mount_opt(ctx, EXT2_MOUNT_DAX);
#else
ext2_msg_fc(fc, KERN_INFO, "dax option not supported");
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 47038e660812..d5da9817df9b 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -1275,6 +1275,7 @@ static int isofs_read_inode(struct inode *inode, int relocated)
unsigned long offset;
struct iso_inode_info *ei = ISOFS_I(inode);
int ret = -EIO;
+ struct timespec64 ts;
block = ei->i_iget5_block;
bh = sb_bread(inode->i_sb, block);
@@ -1387,8 +1388,10 @@ static int isofs_read_inode(struct inode *inode, int relocated)
inode->i_ino, de->flags[-high_sierra]);
}
#endif
- inode_set_mtime_to_ts(inode,
- inode_set_atime_to_ts(inode, inode_set_ctime(inode, iso_date(de->date, high_sierra), 0)));
+ ts = iso_date(de->date, high_sierra ? ISO_DATE_HIGH_SIERRA : 0);
+ inode_set_ctime_to_ts(inode, ts);
+ inode_set_atime_to_ts(inode, ts);
+ inode_set_mtime_to_ts(inode, ts);
ei->i_first_extent = (isonum_733(de->extent) +
isonum_711(de->ext_attr_length));
diff --git a/fs/isofs/isofs.h b/fs/isofs/isofs.h
index 2d55207c9a99..506555837533 100644
--- a/fs/isofs/isofs.h
+++ b/fs/isofs/isofs.h
@@ -106,7 +106,9 @@ static inline unsigned int isonum_733(u8 *p)
/* Ignore bigendian datum due to broken mastering programs */
return get_unaligned_le32(p);
}
-extern int iso_date(u8 *, int);
+#define ISO_DATE_HIGH_SIERRA (1 << 0)
+#define ISO_DATE_LONG_FORM (1 << 1)
+struct timespec64 iso_date(u8 *p, int flags);
struct inode; /* To make gcc happy */
diff --git a/fs/isofs/rock.c b/fs/isofs/rock.c
index dbf911126e61..576498245b9d 100644
--- a/fs/isofs/rock.c
+++ b/fs/isofs/rock.c
@@ -412,7 +412,12 @@ repeat:
}
}
break;
- case SIG('T', 'F'):
+ case SIG('T', 'F'): {
+ int flags, size, slen;
+
+ flags = rr->u.TF.flags & TF_LONG_FORM ? ISO_DATE_LONG_FORM : 0;
+ size = rr->u.TF.flags & TF_LONG_FORM ? 17 : 7;
+ slen = rr->len - 5;
/*
* Some RRIP writers incorrectly place ctime in the
* TF_CREATE field. Try to handle this correctly for
@@ -420,27 +425,28 @@ repeat:
*/
/* Rock ridge never appears on a High Sierra disk */
cnt = 0;
- if (rr->u.TF.flags & TF_CREATE) {
- inode_set_ctime(inode,
- iso_date(rr->u.TF.times[cnt++].time, 0),
- 0);
+ if ((rr->u.TF.flags & TF_CREATE) && size <= slen) {
+ inode_set_ctime_to_ts(inode,
+ iso_date(rr->u.TF.data + size * cnt++, flags));
+ slen -= size;
}
- if (rr->u.TF.flags & TF_MODIFY) {
- inode_set_mtime(inode,
- iso_date(rr->u.TF.times[cnt++].time, 0),
- 0);
+ if ((rr->u.TF.flags & TF_MODIFY) && size <= slen) {
+ inode_set_mtime_to_ts(inode,
+ iso_date(rr->u.TF.data + size * cnt++, flags));
+ slen -= size;
}
- if (rr->u.TF.flags & TF_ACCESS) {
- inode_set_atime(inode,
- iso_date(rr->u.TF.times[cnt++].time, 0),
- 0);
+ if ((rr->u.TF.flags & TF_ACCESS) && size <= slen) {
+ inode_set_atime_to_ts(inode,
+ iso_date(rr->u.TF.data + size * cnt++, flags));
+ slen -= size;
}
- if (rr->u.TF.flags & TF_ATTRIBUTES) {
- inode_set_ctime(inode,
- iso_date(rr->u.TF.times[cnt++].time, 0),
- 0);
+ if ((rr->u.TF.flags & TF_ATTRIBUTES) && size <= slen) {
+ inode_set_ctime_to_ts(inode,
+ iso_date(rr->u.TF.data + size * cnt++, flags));
+ slen -= size;
}
break;
+ }
case SIG('S', 'L'):
{
int slen;
diff --git a/fs/isofs/rock.h b/fs/isofs/rock.h
index 7755e587f778..c0856fa9bb6a 100644
--- a/fs/isofs/rock.h
+++ b/fs/isofs/rock.h
@@ -65,13 +65,9 @@ struct RR_PL_s {
__u8 location[8];
};
-struct stamp {
- __u8 time[7]; /* actually 6 unsigned, 1 signed */
-} __attribute__ ((packed));
-
struct RR_TF_s {
__u8 flags;
- struct stamp times[]; /* Variable number of these beasts */
+ __u8 data[];
} __attribute__ ((packed));
/* Linux-specific extension for transparent decompression */
diff --git a/fs/isofs/util.c b/fs/isofs/util.c
index e88dba721661..42f479da0b28 100644
--- a/fs/isofs/util.c
+++ b/fs/isofs/util.c
@@ -16,29 +16,44 @@
* to GMT. Thus we should always be correct.
*/
-int iso_date(u8 *p, int flag)
+struct timespec64 iso_date(u8 *p, int flags)
{
int year, month, day, hour, minute, second, tz;
- int crtime;
+ struct timespec64 ts;
+
+ if (flags & ISO_DATE_LONG_FORM) {
+ year = (p[0] - '0') * 1000 +
+ (p[1] - '0') * 100 +
+ (p[2] - '0') * 10 +
+ (p[3] - '0') - 1900;
+ month = ((p[4] - '0') * 10 + (p[5] - '0'));
+ day = ((p[6] - '0') * 10 + (p[7] - '0'));
+ hour = ((p[8] - '0') * 10 + (p[9] - '0'));
+ minute = ((p[10] - '0') * 10 + (p[11] - '0'));
+ second = ((p[12] - '0') * 10 + (p[13] - '0'));
+ ts.tv_nsec = ((p[14] - '0') * 10 + (p[15] - '0')) * 10000000;
+ tz = p[16];
+ } else {
+ year = p[0];
+ month = p[1];
+ day = p[2];
+ hour = p[3];
+ minute = p[4];
+ second = p[5];
+ ts.tv_nsec = 0;
+ /* High sierra has no time zone */
+ tz = flags & ISO_DATE_HIGH_SIERRA ? 0 : p[6];
+ }
- year = p[0];
- month = p[1];
- day = p[2];
- hour = p[3];
- minute = p[4];
- second = p[5];
- if (flag == 0) tz = p[6]; /* High sierra has no time zone */
- else tz = 0;
-
if (year < 0) {
- crtime = 0;
+ ts.tv_sec = 0;
} else {
- crtime = mktime64(year+1900, month, day, hour, minute, second);
+ ts.tv_sec = mktime64(year+1900, month, day, hour, minute, second);
/* sign extend */
if (tz & 0x80)
tz |= (-1 << 8);
-
+
/*
* The timezone offset is unreliable on some disks,
* so we make a sanity check. In no case is it ever
@@ -65,7 +80,7 @@ int iso_date(u8 *p, int flag)
* for pointing out the sign error.
*/
if (-52 <= tz && tz <= 52)
- crtime -= tz * 15 * 60;
+ ts.tv_sec -= tz * 15 * 60;
}
- return crtime;
-}
+ return ts;
+}