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The r184588 changed the layout of struct export_args, causing an ABI

Browse Source 
breakage for old mount(2) syscall, since most struct <filesystem>_args
embed export_args. The mount(2) is supposed to provide ABI
compatibility for pre-nmount mount(8) binaries, so restore ABI to
pre-r184588.

Requested and reviewed by:	bde
MFC after:    2 weeks
This commit is contained in:
Konstantin Belousov 2010-10-10 07:05:47 +00:00
parent 21bf062e7e
commit d0cc54f3b4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=213664
14 changed files with 36 additions and 14 deletions
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2
sys/fs/cd9660/cd9660_mount.h
View File

@ -40,7 +40,7 @@
*/
struct iso_args {
char *fspec; /* block special device to mount */
struct export_args export; /* network export info */
struct oexport_args export; /* network export info */
int flags; /* mounting flags, see below */
int ssector; /* starting sector, 0 for 1st session */
char *cs_disk; /* disk charset for Joliet cs conversion */

4
sys/fs/cd9660/cd9660_vfsops.c
View File

@ -98,14 +98,16 @@ static int
cd9660_cmount(struct mntarg *ma, void *data, int flags)
{
struct iso_args args;
struct export_args exp;
int error;
error = copyin(data, &args, sizeof args);
if (error)
return (error);
vfs_oexport_conv(&args.export, &exp);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_arg(ma, "export", &exp, sizeof(exp));
ma = mount_argsu(ma, "cs_disk", args.cs_disk, 64);
ma = mount_argsu(ma, "cs_local", args.cs_local, 64);
ma = mount_argf(ma, "ssector", "%u", args.ssector);

4
sys/fs/hpfs/hpfs_vfsops.c
View File

@ -76,14 +76,16 @@ hpfs_cmount (
int flags)
{
struct hpfs_args args;
struct export_args exp;
int error;
error = copyin(data, (caddr_t)&args, sizeof (struct hpfs_args));
if (error)
return (error);
vfs_oexport_conv(&args.export, &exp);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_arg(ma, "export", &exp, sizeof(exp));
ma = mount_argf(ma, "uid", "%d", args.uid);
ma = mount_argf(ma, "gid", "%d", args.gid);
ma = mount_argf(ma, "mode", "%d", args.mode);

2
sys/fs/hpfs/hpfsmount.h
View File

@ -29,7 +29,7 @@
#define HPFSMNT_TABLES 0x0001
struct hpfs_args {
char *fspec; /* block special device to mount */
struct export_args export; /* network export information */
struct oexport_args export; /* network export information */
uid_t uid; /* uid that owns hpfs files */
gid_t gid; /* gid that owns hpfs files */
mode_t mode; /* mask to be applied for hpfs perms */

4
sys/fs/msdosfs/msdosfs_vfsops.c
View File

@ -200,6 +200,7 @@ static int
msdosfs_cmount(struct mntarg *ma, void *data, int flags)
{
struct msdosfs_args args;
struct export_args exp;
int error;
if (data == NULL)
@ -207,9 +208,10 @@ msdosfs_cmount(struct mntarg *ma, void *data, int flags)
error = copyin(data, &args, sizeof args);
if (error)
return (error);
vfs_oexport_conv(&args.export, &exp);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_arg(ma, "export", &exp, sizeof(exp));
ma = mount_argf(ma, "uid", "%d", args.uid);
ma = mount_argf(ma, "gid", "%d", args.gid);
ma = mount_argf(ma, "mask", "%d", args.mask);

2
sys/fs/msdosfs/msdosfsmount.h
View File

@ -234,7 +234,7 @@ uint32_t msdosfs_fileno_map(struct mount *, uint64_t);
*/
struct msdosfs_args {
char *fspec; /* blocks special holding the fs to mount */
struct export_args export; /* network export information */
struct oexport_args export; /* network export information */
uid_t uid; /* uid that owns msdosfs files */
gid_t gid; /* gid that owns msdosfs files */
mode_t mask; /* file mask to be applied for msdosfs perms */

8
sys/fs/ntfs/ntfs_vfsops.c
View File

@ -119,14 +119,16 @@ ntfs_cmount (
void *data,
int flags)
{
int error;
struct ntfs_args args;
struct export_args exp;
int error;
error = copyin(data, (caddr_t)&args, sizeof args);
error = copyin(data, &args, sizeof(args));
if (error)
return (error);
vfs_oexport_conv(&args.export, &exp);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_arg(ma, "export", &exp, sizeof(exp));
ma = mount_argf(ma, "uid", "%d", args.uid);
ma = mount_argf(ma, "gid", "%d", args.gid);
ma = mount_argf(ma, "mode", "%d", args.mode);

2
sys/fs/ntfs/ntfsmount.h
View File

@ -34,7 +34,7 @@
struct ntfs_args {
char *fspec; /* block special device to mount */
struct export_args export; /* network export information */
struct oexport_args export; /* network export information */
uid_t uid; /* uid that owns ntfs files */
gid_t gid; /* gid that owns ntfs files */
mode_t mode; /* mask to be applied for ntfs perms */

2
sys/gnu/fs/reiserfs/reiserfs_mount.h
View File

@ -39,7 +39,7 @@ struct reiserfs_mount {
/* Arguments to mount ReiserFS filesystems. */
struct reiserfs_args {
char *fspec; /* blocks special holding the fs to mount */
struct export_args export; /* network export information */
struct oexport_args export; /* network export information */
};
#endif /* !defined _GNU_REISERFS_REISERFS_MOUNT_H */

4
sys/gnu/fs/reiserfs/reiserfs_vfsops.c
View File

@ -52,14 +52,16 @@ static int
reiserfs_cmount(struct mntarg *ma, void *data, int flags)
{
struct reiserfs_args args;
struct export_args exp;
int error;
error = copyin(data, &args, sizeof(args));
if (error)
return (error);
vfs_oexport_conv(&args.export, &exp);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_arg(ma, "export", &exp, sizeof(exp));
error = kernel_mount(ma, flags);

8
sys/kern/vfs_mount.c
View File

@ -1960,3 +1960,11 @@ kernel_vmount(int flags, ...)
error = kernel_mount(ma, flags);
return (error);
}
void
vfs_oexport_conv(const struct oexport_args *oexp, struct export_args *exp)
{
bcopy(oexp, exp, sizeof(*oexp));
exp->ex_numsecflavors = 0;
}

2
sys/sys/mount.h
View File

@ -741,6 +741,8 @@ int vfs_modevent(module_t, int, void *);
void vfs_mount_error(struct mount *, const char *, ...);
void vfs_mountroot(void); /* mount our root filesystem */
void vfs_mountedfrom(struct mount *, const char *from);
void vfs_oexport_conv(const struct oexport_args *oexp,
struct export_args *exp);
void vfs_ref(struct mount *);
void vfs_rel(struct mount *);
struct mount *vfs_mount_alloc(struct vnode *, struct vfsconf *, const char *,

4
sys/ufs/ffs/ffs_vfsops.c
View File

@ -463,6 +463,7 @@ static int
ffs_cmount(struct mntarg *ma, void *data, int flags)
{
struct ufs_args args;
struct export_args exp;
int error;
if (data == NULL)
@ -470,9 +471,10 @@ ffs_cmount(struct mntarg *ma, void *data, int flags)
error = copyin(data, &args, sizeof args);
if (error)
return (error);
vfs_oexport_conv(&args.export, &exp);
ma = mount_argsu(ma, "from", args.fspec, MAXPATHLEN);
ma = mount_arg(ma, "export", &args.export, sizeof args.export);
ma = mount_arg(ma, "export", &exp, sizeof(exp));
error = kernel_mount(ma, flags);
return (error);

2
sys/ufs/ufs/ufsmount.h
View File

@ -40,7 +40,7 @@
*/
struct ufs_args {
char *fspec; /* block special device to mount */
struct export_args export; /* network export information */
struct oexport_args export; /* network export information */
};
#ifdef _KERNEL