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cd9660: Expand internal inum size to 64 bits

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Inums in cd9660 refer to byte offsets on the media.  DVD and BD media
can have entries above 4GB, especially with multi-session images.

PR:		190655
Reported by:	Thomas Schmitt <scdbackup at gmx.net>
This commit is contained in:
Conrad Meyer 2017-01-08 06:21:49 +00:00
parent 0c6393a265
commit dbaab6e66f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=311665
8 changed files with 50 additions and 23 deletions
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6
sys/fs/cd9660/cd9660_lookup.c
View file

@ -51,8 +51,8 @@ __FBSDID("$FreeBSD$");
#include <fs/cd9660/iso_rrip.h>
struct cd9660_ino_alloc_arg {
ino_t ino;
ino_t i_ino;
cd_ino_t ino;
cd_ino_t i_ino;
struct iso_directory_record *ep;
};
@ -124,7 +124,7 @@ cd9660_lookup(ap)
struct cd9660_ino_alloc_arg dd_arg;
u_long bmask; /* block offset mask */
int error;
ino_t ino, i_ino;
cd_ino_t ino, i_ino;
int ltype, reclen;
u_short namelen;
int isoflags;

4
sys/fs/cd9660/cd9660_node.c
View file

@ -309,12 +309,12 @@ cd9660_tstamp_conv17(pi,pu)
return cd9660_tstamp_conv7(buf, pu, ISO_FTYPE_DEFAULT);
}
ino_t
cd_ino_t
isodirino(isodir, imp)
struct iso_directory_record *isodir;
struct iso_mnt *imp;
{
ino_t ino;
cd_ino_t ino;
ino = (isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length))
<< imp->im_bshift;

2
sys/fs/cd9660/cd9660_node.h
View file

@ -58,7 +58,7 @@ typedef struct {
struct iso_node {
struct vnode *i_vnode; /* vnode associated with this inode */
ino_t i_number; /* the identity of the inode */
cd_ino_t i_number; /* the identity of the inode */
/* we use the actual starting block of the file */
struct iso_mnt *i_mnt; /* filesystem associated with this inode */
struct lockf *i_lockf; /* head of byte-level lock list */

2
sys/fs/cd9660/cd9660_rrip.c
View file

@ -628,7 +628,7 @@ cd9660_rrip_getname(isodir,outbuf,outlen,inump,imp)
struct iso_directory_record *isodir;
char *outbuf;
u_short *outlen;
ino_t *inump;
cd_ino_t *inump;
struct iso_mnt *imp;
{
ISO_RRIP_ANALYZE analyze;

27
sys/fs/cd9660/cd9660_vfsops.c
View file

@ -540,7 +540,7 @@ cd9660_root(mp, flags, vpp)
struct iso_mnt *imp = VFSTOISOFS(mp);
struct iso_directory_record *dp =
(struct iso_directory_record *)imp->root;
ino_t ino = isodirino(dp, imp);
cd_ino_t ino = isodirino(dp, imp);
/*
* With RRIP we must use the `.' entry of the root directory.
@ -617,6 +617,11 @@ cd9660_fhtovp(mp, fhp, flags, vpp)
return (0);
}
/*
* Conform to standard VFS interface; can't vget arbitrary inodes beyond 4GB
* into media with current inode scheme and 32-bit ino_t. This shouldn't be
* needed for anything other than nfsd, and who exports a mounted DVD over NFS?
*/
static int
cd9660_vget(mp, ino, flags, vpp)
struct mount *mp;
@ -640,10 +645,22 @@ cd9660_vget(mp, ino, flags, vpp)
(struct iso_directory_record *)0));
}
/* Use special comparator for full 64-bit ino comparison. */
static int
cd9660_vfs_hash_cmp(vp, pino)
struct vnode *vp;
cd_ino_t *pino;
{
struct iso_node *ip;
ip = VTOI(vp);
return (ip->i_number != *pino);
}
int
cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
struct mount *mp;
ino_t ino;
cd_ino_t ino;
int flags;
struct vnode **vpp;
int relocated;
@ -658,7 +675,8 @@ cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
struct thread *td;
td = curthread;
error = vfs_hash_get(mp, ino, flags, td, vpp, NULL, NULL);
error = vfs_hash_get(mp, ino, flags, td, vpp, cd9660_vfs_hash_cmp,
&ino);
if (error || *vpp != NULL)
return (error);
@ -699,7 +717,8 @@ cd9660_vget_internal(mp, ino, flags, vpp, relocated, isodir)
*vpp = NULLVP;
return (error);
}
error = vfs_hash_insert(vp, ino, flags, td, vpp, NULL, NULL);
error = vfs_hash_insert(vp, ino, flags, td, vpp, cd9660_vfs_hash_cmp,
&ino);
if (error || *vpp != NULL)
return (error);

11
sys/fs/cd9660/cd9660_vnops.c
View file

@ -481,6 +481,7 @@ cd9660_readdir(ap)
u_short namelen;
int ncookies = 0;
u_long *cookies = NULL;
cd_ino_t ino;
dp = VTOI(vdp);
imp = dp->i_mnt;
@ -576,8 +577,10 @@ cd9660_readdir(ap)
switch (imp->iso_ftype) {
case ISO_FTYPE_RRIP:
cd9660_rrip_getname(ep,idp->current.d_name, &namelen,
&idp->current.d_fileno,imp);
ino = idp->current.d_fileno;
cd9660_rrip_getname(ep, idp->current.d_name, &namelen,
&ino, imp);
idp->current.d_fileno = ino;
idp->current.d_namlen = (u_char)namelen;
if (idp->current.d_namlen)
error = iso_uiodir(idp,&idp->current,idp->curroff);
@ -831,8 +834,8 @@ cd9660_vptofh(ap)
memcpy(ap->a_fhp, &ifh, sizeof(ifh));
#ifdef ISOFS_DBG
printf("vptofh: ino %d, start %ld\n",
ifh.ifid_ino, ifh.ifid_start);
printf("vptofh: ino %jd, start %ld\n",
(uintmax_t)ifh.ifid_ino, ifh.ifid_start);
#endif
return (0);

17
sys/fs/cd9660/iso.h
View file

@ -219,6 +219,11 @@ enum ISO_FTYPE { ISO_FTYPE_DEFAULT, ISO_FTYPE_9660, ISO_FTYPE_RRIP,
#define ISOFSMNT_ROOT 0
#endif
/*
* When ino_t becomes 64-bit, we can remove this definition in favor of ino_t.
*/
#define cd_ino_t uint64_t
struct iso_mnt {
uint64_t im_flags;
@ -250,10 +255,10 @@ struct iso_mnt {
};
struct ifid {
u_short ifid_len;
u_short ifid_pad;
int ifid_ino;
long ifid_start;
u_short ifid_len;
u_short ifid_pad;
cd_ino_t ifid_ino;
long ifid_start;
};
#define VFSTOISOFS(mp) ((struct iso_mnt *)((mp)->mnt_data))
@ -263,7 +268,7 @@ struct ifid {
#define lblkno(imp, loc) ((loc) >> (imp)->im_bshift)
#define blksize(imp, ip, lbn) ((imp)->logical_block_size)
int cd9660_vget_internal(struct mount *, ino_t, int, struct vnode **, int,
int cd9660_vget_internal(struct mount *, cd_ino_t, int, struct vnode **, int,
struct iso_directory_record *);
#define cd9660_sysctl ((int (*)(int *, u_int, void *, size_t *, void *, \
size_t, struct proc *))eopnotsupp)
@ -274,7 +279,7 @@ extern struct vop_vector cd9660_fifoops;
int isochar(u_char *, u_char *, int, u_short *, int *, int, void *);
int isofncmp(u_char *, int, u_char *, int, int, int, void *, void *);
void isofntrans(u_char *, int, u_char *, u_short *, int, int, int, int, void *);
ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
cd_ino_t isodirino(struct iso_directory_record *, struct iso_mnt *);
u_short sgetrune(const char *, size_t, char const **, int, void *);
#endif /* _KERNEL */

4
sys/fs/cd9660/iso_rrip.h
View file

@ -61,7 +61,7 @@ typedef struct {
off_t iso_ce_off; /* offset of continuation area */
int iso_ce_len; /* length of continuation area */
struct iso_mnt *imp; /* mount structure */
ino_t *inump; /* inode number pointer */
cd_ino_t *inump; /* inode number pointer */
char *outbuf; /* name/symbolic link output area */
u_short *outlen; /* length of above */
u_short maxlen; /* maximum length of above */
@ -74,7 +74,7 @@ int cd9660_rrip_analyze(struct iso_directory_record *isodir,
struct iso_node *inop, struct iso_mnt *imp);
int cd9660_rrip_getname(struct iso_directory_record *isodir,
char *outbuf, u_short *outlen,
ino_t *inump, struct iso_mnt *imp);
cd_ino_t *inump, struct iso_mnt *imp);
int cd9660_rrip_getsymname(struct iso_directory_record *isodir,
char *outbuf, u_short *outlen,
struct iso_mnt *imp);