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cd9660: Add support for birth times

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Both the Extended Attribute Record in the base ISO-9660 standard and
the RockRidge timestamp extension support a file creation timestamp.
Use this to populate the birthtime if present.

Reviewed by:	markj (earlier version)
Differential Revision:	https://reviews.freebsd.org/D57526
This commit is contained in:
John Baldwin committed 2026-06-23 11:51:43 -04:00
1 parent f6dd01b417
commit 3d945604ef
4 files changed
+23 -7
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sys/fs/cd9660/cd9660_node.c
+7 -5
View File
@@ -184,13 +184,14 @@ cd9660_deftstamp(struct iso_directory_record *isodir, struct iso_node *inop,
* Only the first two are meaningful for struct
* stat.
*/
struct timespec birthtime;
if (!cd9660_tstamp_conv17(ap->ctime, &birthtime))
memset(&birthtime, 0, sizeof(birthtime));
if (!cd9660_tstamp_conv17(ap->ctime,
&inop->inode.iso_birthtime))
memset(&inop->inode.iso_birthtime, 0,
sizeof(inop->inode.iso_birthtime));
if (!cd9660_tstamp_conv17(ap->mtime,
&inop->inode.iso_mtime))
inop->inode.iso_mtime = birthtime;
inop->inode.iso_mtime =
inop->inode.iso_birthtime;
inop->inode.iso_ctime = inop->inode.iso_mtime;
inop->inode.iso_atime = inop->inode.iso_mtime;
} else
@@ -200,6 +201,7 @@ cd9660_deftstamp(struct iso_directory_record *isodir, struct iso_node *inop,
cd9660_tstamp_conv7(isodir->date,&inop->inode.iso_ctime,ftype);
inop->inode.iso_atime = inop->inode.iso_ctime;
inop->inode.iso_mtime = inop->inode.iso_ctime;
inop->inode.iso_birthtime = inop->inode.iso_ctime;
}
if (bp2)
brelse(bp2);
sys/fs/cd9660/cd9660_node.h
+1
View File
@@ -47,6 +47,7 @@ typedef struct {
struct timespec iso_atime; /* time of last access */
struct timespec iso_mtime; /* time of last modification */
struct timespec iso_ctime; /* time file changed */
struct timespec iso_birthtime; /* time file created */
u_short iso_mode; /* files access mode and type */
uid_t iso_uid; /* owner user id */
gid_t iso_gid; /* owner group id */
sys/fs/cd9660/cd9660_rrip.c
+14 -2
View File
@@ -376,14 +376,20 @@ cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, size_t len, ISO_RRIP_ANALYZE *ana)
/* Check a format of time stamp (7bytes/17bytes) */
if (!(*p->flags & ISO_SUSP_TSTAMP_FORM17)) {
if (*p->flags & ISO_SUSP_TSTAMP_CREAT) {
cd9660_tstamp_conv7(ptime,
&ana->inop->inode.iso_birthtime, ISO_FTYPE_RRIP);
ptime += 7;
} else {
memset(&ana->inop->inode.iso_birthtime, 0,
sizeof(struct timespec));
}
if (*p->flags & ISO_SUSP_TSTAMP_MODIFY) {
cd9660_tstamp_conv7(ptime, &ana->inop->inode.iso_mtime,
ISO_FTYPE_RRIP);
ptime += 7;
} else {
memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
ana->inop->inode.iso_mtime =
ana->inop->inode.iso_birthtime;
}
if (*p->flags & ISO_SUSP_TSTAMP_ACCESS) {
cd9660_tstamp_conv7(ptime, &ana->inop->inode.iso_atime,
@@ -400,13 +406,19 @@ cd9660_rrip_tstamp(ISO_RRIP_TSTAMP *p, size_t len, ISO_RRIP_ANALYZE *ana)
}
} else {
if (*p->flags & ISO_SUSP_TSTAMP_CREAT) {
cd9660_tstamp_conv17(ptime,
&ana->inop->inode.iso_birthtime);
ptime += 17;
} else {
memset(&ana->inop->inode.iso_birthtime, 0,
sizeof(struct timespec));
}
if (*p->flags & ISO_SUSP_TSTAMP_MODIFY) {
cd9660_tstamp_conv17(ptime, &ana->inop->inode.iso_mtime);
ptime += 17;
} else {
memset(&ana->inop->inode.iso_mtime, 0, sizeof(struct timespec));
ana->inop->inode.iso_mtime =
ana->inop->inode.iso_birthtime;
}
if (*p->flags & ISO_SUSP_TSTAMP_ACCESS) {
cd9660_tstamp_conv17(ptime, &ana->inop->inode.iso_atime);
sys/fs/cd9660/cd9660_vnops.c
+1
View File
@@ -191,6 +191,7 @@ cd9660_getattr(struct vop_getattr_args *ap)
vap->va_atime = ip->inode.iso_atime;
vap->va_mtime = ip->inode.iso_mtime;
vap->va_ctime = ip->inode.iso_ctime;
vap->va_birthtime = ip->inode.iso_birthtime;
vap->va_rdev = VN_ISDEV(vp) ? ip->inode.iso_rdev : NODEV;
vap->va_size = ip->i_size;