int cp_compat_stat(struct kstat *stat, struct compat_stat *statbuf)
{
struct compat_stat tmp;
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
memset(&tmp, 0, sizeof(tmp));
tmp.st_dev = new_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
SET_UID(tmp.st_uid, stat->uid);
SET_GID(tmp.st_gid, stat->gid);
tmp.st_rdev = new_encode_dev(stat->rdev);
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
#ifdef STAT_HAVE_NSEC
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
#endif
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
static long cp_new_stat64(struct kstat *stat, struct stat64 __user *statbuf)
{
struct stat64 tmp;
INIT_STRUCT_STAT64_PADDING(tmp);
#ifdef CONFIG_MIPS
/* mips has weird padding, so we don't get 64 bits there */
tmp.st_dev = new_encode_dev(stat->dev);
tmp.st_rdev = new_encode_dev(stat->rdev);
#else
tmp.st_dev = huge_encode_dev(stat->dev);
tmp.st_rdev = huge_encode_dev(stat->rdev);
#endif
tmp.st_ino = stat->ino;
if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
return -EOVERFLOW;
#ifdef STAT64_HAS_BROKEN_ST_INO
tmp.__st_ino = stat->ino;
#endif
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
tmp.st_uid = from_kuid_munged(current_user_ns(), stat->uid);
tmp.st_gid = from_kgid_munged(current_user_ns(), stat->gid);
tmp.st_atime = stat->atime.tv_sec;
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime = stat->ctime.tv_sec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
tmp.st_size = stat->size;
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
static long cp_new_stat64(struct kstat *stat, struct stat64 __user *statbuf)
{
struct stat64 tmp;
memset(&tmp, 0, sizeof(struct stat64));
#ifdef CONFIG_MIPS
/* mips has weird padding, so we don't get 64 bits there */
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
tmp.st_dev = new_encode_dev(stat->dev);
tmp.st_rdev = new_encode_dev(stat->rdev);
#else
tmp.st_dev = huge_encode_dev(stat->dev);
tmp.st_rdev = huge_encode_dev(stat->rdev);
#endif
tmp.st_ino = stat->ino;
#ifdef STAT64_HAS_BROKEN_ST_INO
tmp.__st_ino = stat->ino;
#endif
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
tmp.st_uid = stat->uid;
tmp.st_gid = stat->gid;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime = stat->ctime.tv_sec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
tmp.st_size = stat->size;
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
static int cp_hpux_stat(struct kstat *stat, struct hpux_stat64 __user *statbuf)
{
struct hpux_stat64 tmp;
/* we probably want a different split here - is hpux 12:20? */
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
memset(&tmp, 0, sizeof(tmp));
tmp.st_dev = new_encode_dev(stat->dev);
tmp.st_ino = stat->ino;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
tmp.st_uid = stat->uid;
tmp.st_gid = stat->gid;
tmp.st_rdev = new_encode_dev(stat->rdev);
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
{
compat_ino_t ino;
long err;
if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
!new_valid_dev(stat->rdev))
return -EOVERFLOW;
ino = stat->ino;
if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
return -EOVERFLOW;
err = access_ok(VERIFY_WRITE, statbuf, sizeof(*statbuf)) ? 0 : -EFAULT;
err |= __put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
err |= __put_user(ino, &statbuf->st_ino);
err |= __put_user(stat->mode, &statbuf->st_mode);
err |= __put_user(stat->nlink, &statbuf->st_nlink);
err |= __put_user(stat->uid, &statbuf->st_uid);
err |= __put_user(stat->gid, &statbuf->st_gid);
err |= __put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
err |= __put_user(stat->size, &statbuf->st_size);
err |= __put_user(stat->atime.tv_sec, &statbuf->st_atime);
err |= __put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
err |= __put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
err |= __put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
err |= __put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
err |= __put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
err |= __put_user(stat->blksize, &statbuf->st_blksize);
err |= __put_user(stat->blocks, &statbuf->st_blocks);
err |= __put_user(0, &statbuf->__unused4[0]);
err |= __put_user(0, &statbuf->__unused4[1]);
return err;
}
/*
* Check if the given path is a mountpoint.
*
* If we are supplied with the file descriptor of an autofs
* mount we're looking for a specific mount. In this case
* the path is considered a mountpoint if it is itself a
* mountpoint or contains a mount, such as a multi-mount
* without a root mount. In this case we return 1 if the
* path is a mount point and the super magic of the covering
* mount if there is one or 0 if it isn't a mountpoint.
*
* If we aren't supplied with a file descriptor then we
* lookup the nameidata of the path and check if it is the
* root of a mount. If a type is given we are looking for
* a particular autofs mount and if we don't find a match
* we return fail. If the located nameidata path is the
* root of a mount we return 1 along with the super magic
* of the mount or 0 otherwise.
*
* In both cases the the device number (as returned by
* new_encode_dev()) is also returned.
*/
static int autofs_dev_ioctl_ismountpoint(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
struct path path;
const char *name;
unsigned int type;
unsigned int devid, magic;
int err = -ENOENT;
if (param->size <= sizeof(*param)) {
err = -EINVAL;
goto out;
}
name = param->path;
type = param->ismountpoint.in.type;
param->ismountpoint.out.devid = devid = 0;
param->ismountpoint.out.magic = magic = 0;
if (!fp || param->ioctlfd == -1) {
if (autofs_type_any(type))
err = kern_path(name, LOOKUP_FOLLOW, &path);
else
err = find_autofs_mount(name, &path, test_by_type, &type);
if (err)
goto out;
devid = new_encode_dev(path.mnt->mnt_sb->s_dev);
err = 0;
if (path.dentry->d_inode &&
path.mnt->mnt_root == path.dentry) {
err = 1;
magic = path.dentry->d_inode->i_sb->s_magic;
}
} else {
dev_t dev = sbi->sb->s_dev;
err = find_autofs_mount(name, &path, test_by_dev, &dev);
if (err)
goto out;
devid = new_encode_dev(dev);
err = have_submounts(path.dentry);
if (path.mnt->mnt_mountpoint != path.mnt->mnt_root) {
if (follow_down(&path))
magic = path.mnt->mnt_sb->s_magic;
}
}
param->ismountpoint.out.devid = devid;
param->ismountpoint.out.magic = magic;
path_put(&path);
out:
return err;
}
static __be32 *
encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
struct kstat *stat)
{
struct dentry *dentry = fhp->fh_dentry;
int type;
struct timespec64 time;
u32 f;
type = (stat->mode & S_IFMT);
*p++ = htonl(nfs_ftypes[type >> 12]);
*p++ = htonl((u32) stat->mode);
*p++ = htonl((u32) stat->nlink);
*p++ = htonl((u32) from_kuid(&init_user_ns, stat->uid));
*p++ = htonl((u32) from_kgid(&init_user_ns, stat->gid));
if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
*p++ = htonl(NFS_MAXPATHLEN);
} else {
*p++ = htonl((u32) stat->size);
}
*p++ = htonl((u32) stat->blksize);
if (S_ISCHR(type) || S_ISBLK(type))
*p++ = htonl(new_encode_dev(stat->rdev));
else
*p++ = htonl(0xffffffff);
*p++ = htonl((u32) stat->blocks);
switch (fsid_source(fhp)) {
default:
case FSIDSOURCE_DEV:
*p++ = htonl(new_encode_dev(stat->dev));
break;
case FSIDSOURCE_FSID:
*p++ = htonl((u32) fhp->fh_export->ex_fsid);
break;
case FSIDSOURCE_UUID:
f = ((u32*)fhp->fh_export->ex_uuid)[0];
f ^= ((u32*)fhp->fh_export->ex_uuid)[1];
f ^= ((u32*)fhp->fh_export->ex_uuid)[2];
f ^= ((u32*)fhp->fh_export->ex_uuid)[3];
*p++ = htonl(f);
break;
}
*p++ = htonl((u32) stat->ino);
*p++ = htonl((u32) stat->atime.tv_sec);
*p++ = htonl(stat->atime.tv_nsec ? stat->atime.tv_nsec / 1000 : 0);
time = stat->mtime;
lease_get_mtime(d_inode(dentry), &time);
*p++ = htonl((u32) time.tv_sec);
*p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0);
*p++ = htonl((u32) stat->ctime.tv_sec);
*p++ = htonl(stat->ctime.tv_nsec ? stat->ctime.tv_nsec / 1000 : 0);
return p;
}
/*
* Check if the given path is a mountpoint.
*
* If we are supplied with the file descriptor of an autofs
* mount we're looking for a specific mount. In this case
* the path is considered a mountpoint if it is itself a
* mountpoint or contains a mount, such as a multi-mount
* without a root mount. In this case we return 1 if the
* path is a mount point and the super magic of the covering
* mount if there is one or 0 if it isn't a mountpoint.
*
* If we aren't supplied with a file descriptor then we
* lookup the path and check if it is the root of a mount.
* If a type is given we are looking for a particular autofs
* mount and if we don't find a match we return fail. If the
* located path is the root of a mount we return 1 along with
* the super magic of the mount or 0 otherwise.
*
* In both cases the the device number (as returned by
* new_encode_dev()) is also returned.
*/
static int autofs_dev_ioctl_ismountpoint(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
struct path path;
const char *name;
unsigned int type;
unsigned int devid, magic;
int err = -ENOENT;
/* param->path has been checked in validate_dev_ioctl() */
name = param->path;
type = param->ismountpoint.in.type;
param->ismountpoint.out.devid = devid = 0;
param->ismountpoint.out.magic = magic = 0;
if (!fp || param->ioctlfd == -1) {
if (autofs_type_any(type))
err = kern_path_mountpoint(AT_FDCWD,
name, &path, LOOKUP_FOLLOW);
else
err = find_autofs_mount(name, &path,
test_by_type, &type);
if (err)
goto out;
devid = new_encode_dev(path.dentry->d_sb->s_dev);
err = 0;
if (path.mnt->mnt_root == path.dentry) {
err = 1;
magic = path.dentry->d_sb->s_magic;
}
} else {
dev_t dev = sbi->sb->s_dev;
err = find_autofs_mount(name, &path, test_by_dev, &dev);
if (err)
goto out;
devid = new_encode_dev(dev);
err = path_has_submounts(&path);
if (follow_down_one(&path))
magic = path.dentry->d_sb->s_magic;
}
param->ismountpoint.out.devid = devid;
param->ismountpoint.out.magic = magic;
path_put(&path);
out:
return err;
}
static int cp_new_stat(struct kstat *stat, struct stat __user *statbuf)
{
struct stat tmp;
#if BITS_PER_LONG == 32
if (!old_valid_dev(stat->dev) || !old_valid_dev(stat->rdev))
return -EOVERFLOW;
#else
if (!new_valid_dev(stat->dev) || !new_valid_dev(stat->rdev))
return -EOVERFLOW;
#endif
memset(&tmp, 0, sizeof(tmp));
#if BITS_PER_LONG == 32
tmp.st_dev = old_encode_dev(stat->dev);
#else
tmp.st_dev = new_encode_dev(stat->dev);
#endif
tmp.st_ino = stat->ino;
if (sizeof(tmp.st_ino) < sizeof(stat->ino) && tmp.st_ino != stat->ino)
return -EOVERFLOW;
tmp.st_mode = stat->mode;
tmp.st_nlink = stat->nlink;
if (tmp.st_nlink != stat->nlink)
return -EOVERFLOW;
SET_UID(tmp.st_uid, stat->uid);
SET_GID(tmp.st_gid, stat->gid);
#if BITS_PER_LONG == 32
tmp.st_rdev = old_encode_dev(stat->rdev);
#else
tmp.st_rdev = new_encode_dev(stat->rdev);
#endif
#if BITS_PER_LONG == 32
if (stat->size > MAX_NON_LFS)
return -EOVERFLOW;
#endif
tmp.st_size = stat->size;
tmp.st_atime = stat->atime.tv_sec;
tmp.st_mtime = stat->mtime.tv_sec;
tmp.st_ctime = stat->ctime.tv_sec;
#ifdef STAT_HAVE_NSEC
tmp.st_atime_nsec = stat->atime.tv_nsec;
tmp.st_mtime_nsec = stat->mtime.tv_nsec;
tmp.st_ctime_nsec = stat->ctime.tv_nsec;
#endif
tmp.st_blocks = stat->blocks;
tmp.st_blksize = stat->blksize;
scribe_data_non_det();
return copy_to_user(statbuf,&tmp,sizeof(tmp)) ? -EFAULT : 0;
}
void nilfs_write_inode_common(struct inode *inode,
struct nilfs_inode *raw_inode, int has_bmap)
{
struct nilfs_inode_info *ii = NILFS_I(inode);
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
raw_inode->i_uid = cpu_to_le32(inode->i_uid);
raw_inode->i_gid = cpu_to_le32(inode->i_gid);
raw_inode->i_links_count = cpu_to_le16(inode->i_nlink);
raw_inode->i_size = cpu_to_le64(inode->i_size);
raw_inode->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
raw_inode->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
raw_inode->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
raw_inode->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
raw_inode->i_blocks = cpu_to_le64(inode->i_blocks);
raw_inode->i_flags = cpu_to_le32(ii->i_flags);
raw_inode->i_generation = cpu_to_le32(inode->i_generation);
if (has_bmap)
nilfs_bmap_write(ii->i_bmap, raw_inode);
else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode))
raw_inode->i_device_code =
cpu_to_le64(new_encode_dev(inode->i_rdev));
/* When extending inode, nilfs->ns_inode_size should be checked
for substitutions of appended fields */
}
static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
/*if (le32_to_cpu(fnode->acl_size_l) || le16_to_cpu(fnode->acl_size_s)) {
Some unknown structures like ACL may be in fnode,
we'd better not overwrite them
hpfs_error(i->i_sb, "fnode %08x has some unknown HPFS386 structures", i->i_ino);
} else*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
__le32 ea;
if (!uid_eq(i->i_uid, hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
ea = cpu_to_le32(i_uid_read(i));
hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
hpfs_inode->i_ea_uid = 1;
}
if (!gid_eq(i->i_gid, hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
ea = cpu_to_le32(i_gid_read(i));
hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
hpfs_inode->i_ea_gid = 1;
}
if (!S_ISLNK(i->i_mode))
if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
&& i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
ea = cpu_to_le32(i->i_mode);
/* sick, but legal */
hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
hpfs_inode->i_ea_mode = 1;
}
if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
ea = cpu_to_le32(new_encode_dev(i->i_rdev));
hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
}
}
}
static int fuse_mknod(struct inode *dir, struct dentry *entry, umode_t mode,
dev_t rdev)
{
struct fuse_mknod_in inarg;
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_req *req = fuse_get_req_nopages(fc);
if (IS_ERR(req))
return PTR_ERR(req);
if (!fc->dont_mask)
mode &= ~current_umask();
memset(&inarg, 0, sizeof(inarg));
inarg.mode = mode;
inarg.rdev = new_encode_dev(rdev);
inarg.umask = current_umask();
req->in.h.opcode = FUSE_MKNOD;
req->in.numargs = 2;
req->in.args[0].size = fc->minor < 12 ? FUSE_COMPAT_MKNOD_IN_SIZE :
sizeof(inarg);
req->in.args[0].value = &inarg;
req->in.args[1].size = entry->d_name.len + 1;
req->in.args[1].value = entry->d_name.name;
return create_new_entry(fc, req, dir, entry, mode);
}
static void hpfs_write_inode_ea(struct inode *i, struct fnode *fnode)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
/*
*/ if (hpfs_sb(i->i_sb)->sb_eas >= 2) {
__le32 ea;
if ((i->i_uid != hpfs_sb(i->i_sb)->sb_uid) || hpfs_inode->i_ea_uid) {
ea = cpu_to_le32(i->i_uid);
hpfs_set_ea(i, fnode, "UID", (char*)&ea, 2);
hpfs_inode->i_ea_uid = 1;
}
if ((i->i_gid != hpfs_sb(i->i_sb)->sb_gid) || hpfs_inode->i_ea_gid) {
ea = cpu_to_le32(i->i_gid);
hpfs_set_ea(i, fnode, "GID", (char *)&ea, 2);
hpfs_inode->i_ea_gid = 1;
}
if (!S_ISLNK(i->i_mode))
if ((i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0 : 0111))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))
&& i->i_mode != ((hpfs_sb(i->i_sb)->sb_mode & ~(S_ISDIR(i->i_mode) ? 0222 : 0333))
| (S_ISDIR(i->i_mode) ? S_IFDIR : S_IFREG))) || hpfs_inode->i_ea_mode) {
ea = cpu_to_le32(i->i_mode);
/* */
hpfs_set_ea(i, fnode, "MODE", (char *)&ea, 2);
hpfs_inode->i_ea_mode = 1;
}
if (S_ISBLK(i->i_mode) || S_ISCHR(i->i_mode)) {
ea = cpu_to_le32(new_encode_dev(i->i_rdev));
hpfs_set_ea(i, fnode, "DEV", (char *)&ea, 4);
}
}
}
int vfsub_mknod(struct inode *dir, struct path *path, int mode, dev_t dev)
{
int err;
struct dentry *d;
IMustLock(dir);
d = path->dentry;
path->dentry = d->d_parent;
err = security_path_mknod(path, d, mode, new_encode_dev(dev));
path->dentry = d;
if (unlikely(err))
goto out;
err = vfs_mknod(dir, path->dentry, mode, dev);
if (!err) {
struct path tmp = *path;
int did;
vfsub_update_h_iattr(&tmp, &did);
if (did) {
tmp.dentry = path->dentry->d_parent;
vfsub_update_h_iattr(&tmp, /*did*/NULL);
}
/*ignore*/
}
out:
return err;
}
/* Do we recognize the device? */
STATIC bool
xfs_getfsmap_is_valid_device(
struct xfs_mount *mp,
struct xfs_fsmap *fm)
{
if (fm->fmr_device == 0 || fm->fmr_device == UINT_MAX ||
fm->fmr_device == new_encode_dev(mp->m_ddev_targp->bt_dev))
return true;
if (mp->m_logdev_targp &&
fm->fmr_device == new_encode_dev(mp->m_logdev_targp->bt_dev))
return true;
if (mp->m_rtdev_targp &&
fm->fmr_device == new_encode_dev(mp->m_rtdev_targp->bt_dev))
return true;
return false;
}
static struct buffer_head *sfs_update_inode(struct inode *inode)
{
struct buffer_head *bh;
struct sfs_inode_info *si;
struct sfs_inode *di;
int i;
si = SFS_INODE(inode);
di = sfs_get_inode(inode->i_sb, inode->i_ino, &bh);
if (!di)
return NULL;
di->i_size = cpu_to_le32(inode->i_size);
di->i_mode = cpu_to_le16(inode->i_mode);
di->i_ctime = cpu_to_le32(inode->i_ctime.tv_sec);
di->i_atime = cpu_to_le32(inode->i_atime.tv_sec);
di->i_mtime = cpu_to_le32(inode->i_mtime.tv_sec);
di->i_uid = cpu_to_le32(i_uid_read(inode));
di->i_gid = cpu_to_le32(i_gid_read(inode));
di->i_nlink = cpu_to_le16(inode->i_nlink);
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
di->i_blkaddr[0] = cpu_to_le32(new_encode_dev(inode->i_rdev));
for (i = 1; i < 9; i++)
di->i_blkaddr[i] = cpu_to_le32(0);
} else for (i = 0; i < 9; i++)
di->i_blkaddr[i] = si->blkaddr[i];
mark_buffer_dirty(bh);
return bh;
}
int cp_compat_stat(struct kstat *stat, struct compat_stat __user *statbuf)
{
compat_ino_t ino;
int err;
if (stat->size > MAX_NON_LFS || !new_valid_dev(stat->dev) ||
!new_valid_dev(stat->rdev))
return -EOVERFLOW;
ino = stat->ino;
if (sizeof(ino) < sizeof(stat->ino) && ino != stat->ino)
return -EOVERFLOW;
err = put_user(new_encode_dev(stat->dev), &statbuf->st_dev);
err |= put_user(ino, &statbuf->st_ino);
err |= put_user(stat->mode, &statbuf->st_mode);
err |= put_user(stat->nlink, &statbuf->st_nlink);
err |= put_user(0, &statbuf->st_reserved1);
err |= put_user(0, &statbuf->st_reserved2);
err |= put_user(new_encode_dev(stat->rdev), &statbuf->st_rdev);
err |= put_user(stat->size, &statbuf->st_size);
err |= put_user(stat->atime.tv_sec, &statbuf->st_atime);
err |= put_user(stat->atime.tv_nsec, &statbuf->st_atime_nsec);
err |= put_user(stat->mtime.tv_sec, &statbuf->st_mtime);
err |= put_user(stat->mtime.tv_nsec, &statbuf->st_mtime_nsec);
err |= put_user(stat->ctime.tv_sec, &statbuf->st_ctime);
err |= put_user(stat->ctime.tv_nsec, &statbuf->st_ctime_nsec);
err |= put_user(stat->blksize, &statbuf->st_blksize);
err |= put_user(stat->blocks, &statbuf->st_blocks);
err |= put_user(0, &statbuf->__unused1);
err |= put_user(0, &statbuf->__unused2);
err |= put_user(0, &statbuf->__unused3);
err |= put_user(0, &statbuf->__unused4);
err |= put_user(0, &statbuf->__unused5);
err |= put_user(0, &statbuf->st_fstype); /* not avail */
err |= put_user(0, &statbuf->st_realdev); /* not avail */
err |= put_user(0, &statbuf->st_basemode); /* not avail */
err |= put_user(0, &statbuf->st_spareshort);
err |= put_user(stat->uid, &statbuf->st_uid);
err |= put_user(stat->gid, &statbuf->st_gid);
err |= put_user(0, &statbuf->st_spare4[0]);
err |= put_user(0, &statbuf->st_spare4[1]);
err |= put_user(0, &statbuf->st_spare4[2]);
return err;
}
static int simplefs_parse_options(struct super_block *sb, char *options)
{
substring_t args[MAX_OPT_ARGS];
int token, ret, arg;
char *p;
while ((p = strsep(&options, ",")) != NULL) {
if (!*p)
continue;
args[0].to = args[0].from = NULL;
token = match_token(p, tokens, args);
switch (token) {
case SIMPLEFS_OPT_JOURNAL_DEV:
if (args->from && match_int(args, &arg))
return 1;
printk(KERN_INFO "Loading journal devnum: %i\n", arg);
if ((ret = simplefs_load_journal(sb, arg)))
return ret;
break;
case SIMPLEFS_OPT_JOURNAL_PATH:
{
char *journal_path;
struct inode *journal_inode;
struct path path;
BUG_ON(!(journal_path = match_strdup(&args[0])));
ret = kern_path(journal_path, LOOKUP_FOLLOW, &path);
if (ret) {
printk(KERN_ERR "could not find journal device path: error %d\n", ret);
kfree(journal_path);
}
journal_inode = path.dentry->d_inode;
path_put(&path);
kfree(journal_path);
if (S_ISBLK(journal_inode->i_mode)) {
unsigned long journal_devnum = new_encode_dev(journal_inode->i_rdev);
if ((ret = simplefs_load_journal(sb, journal_devnum)))
return ret;
} else {
/** Seems didn't work properly */
if ((ret = simplefs_sb_load_journal(sb, journal_inode)))
return ret;
}
break;
}
}
}
return 0;
}
/* static */ SysStatus
LinuxPTYServer::Create(ObjectHandle &oh, TypeID &type,
dev_t num, ProcessID pid, uval oflag)
{
SysStatus rc;
int ret;
LinuxPTYServer *pty = new LinuxPTYServer();
LinuxPTYServerRef ref;
pty->devNum = num;
pty->availMask = FileLinux::INVALID;
CObjRootSingleRep::Create(pty);
ref = (LinuxPTYServerRef)pty->getRef();
pty->readCB.obj = ref;
pty->writeCB.obj = ref;
rc = DREF(ref)->giveAccessByServer(oh, pid);
if (_FAILURE(rc)) {
DREF(ref)->destroy();
return rc;
}
ProcessLinux::LinuxInfo info;
rc = DREFGOBJ(TheProcessLinuxRef)->getInfoNativePid(pid, info);
tassertMsg(_SUCCESS(rc),
"Couldn't get info about k42 process 0x%lx\n", pid);
PTYTaskInfo ptyTI(info.pid, info.pgrp, info.session, info.tty,
info.pid == info.session);
LinuxEnv sc(SysCall, ptyTI.t);
ret = ttydev_open(&pty->oli, num, &pty->readQ, &pty->writeQ,
oflag|O_NONBLOCK);
if (ret<0) {
rc = _SERROR(2365, 0, -ret);
// releaseAccess will trigger destroy
DREF(ref)->releaseAccess(oh.xhandle());
} else {
pty->devNum = ret;
//Put ourselves on wait queue with TTYEvents object that will
// generate callbacks instead of waking threads
if (pty->readQ && list_empty(&pty->readCB.task_list)) {
add_wait_queue(pty->readQ, &pty->readCB);
}
if (pty->writeQ && list_empty(&pty->writeCB.task_list)) {
add_wait_queue(pty->writeQ, &pty->writeCB);
}
type = (TypeID)new_encode_dev(pty->devNum);
}
return rc;
}
static __be32 *
encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *fhp,
struct kstat *stat)
{
struct dentry *dentry = fhp->fh_dentry;
int type;
struct timespec time;
type = (stat->mode & S_IFMT);
*p++ = htonl(nfs_ftypes[type >> 12]);
*p++ = htonl((u32) stat->mode);
*p++ = htonl((u32) stat->nlink);
*p++ = htonl((u32) nfsd_ruid(rqstp, stat->uid));
*p++ = htonl((u32) nfsd_rgid(rqstp, stat->gid));
if (S_ISLNK(type) && stat->size > NFS_MAXPATHLEN) {
*p++ = htonl(NFS_MAXPATHLEN);
} else {
*p++ = htonl((u32) stat->size);
}
*p++ = htonl((u32) stat->blksize);
if (S_ISCHR(type) || S_ISBLK(type))
*p++ = htonl(new_encode_dev(stat->rdev));
else
*p++ = htonl(0xffffffff);
*p++ = htonl((u32) stat->blocks);
if (is_fsid(fhp, rqstp->rq_reffh))
*p++ = htonl((u32) fhp->fh_export->ex_fsid);
else
*p++ = htonl(new_encode_dev(stat->dev));
*p++ = htonl((u32) stat->ino);
*p++ = htonl((u32) stat->atime.tv_sec);
*p++ = htonl(stat->atime.tv_nsec ? stat->atime.tv_nsec / 1000 : 0);
lease_get_mtime(dentry->d_inode, &time);
*p++ = htonl((u32) time.tv_sec);
*p++ = htonl(time.tv_nsec ? time.tv_nsec / 1000 : 0);
*p++ = htonl((u32) stat->ctime.tv_sec);
*p++ = htonl(stat->ctime.tv_nsec ? stat->ctime.tv_nsec / 1000 : 0);
return p;
}
/* called under sb->s_umount semaphore */
static int vz_restore_symlink(struct super_block *sb, char *path, int type)
{
mm_segment_t oldfs;
char *newpath;
char dest[64];
const char *names[] = {
[USRQUOTA] "aquota.user",
[GRPQUOTA] "aquota.group"
};
int err;
newpath = kmalloc(strlen(path) + sizeof(".new"), GFP_KERNEL);
if (newpath == NULL)
return -ENOMEM;
strcpy(newpath, path);
strcat(newpath, ".new");
sprintf(dest, "/proc/vz/vzaquota/%08x/%s",
new_encode_dev(sb->s_dev), names[type]);
/*
* Lockdep will learn unneeded dependency while unlink(2):
* ->s_umount => ->i_mutex/1 => ->i_mutex
* Reverse dependency is,
* open_namei() => ->i_mutex => lookup_hash() => __lookup_hash()
* => ->lookup() \eq vzdq_aquotq_lookup() => find_qmblk_by_dev()
* => user_get_super() => ->s_umount
*
* However, first set of ->i_mutex'es belong to /, second to /proc .
* Right fix is to get rid of vz_restore_symlink(), of course.
*/
up_read(&sb->s_umount);
oldfs = get_fs();
set_fs(KERNEL_DS);
err = sys_unlink(newpath);
if (err < 0 && err != -ENOENT)
goto out_restore;
err = sys_symlink(dest, newpath);
if (err < 0)
goto out_restore;
err = sys_rename(newpath, path);
out_restore:
set_fs(oldfs);
down_read(&sb->s_umount);
/* umounted meanwhile? */
if (err == 0 && !sb->s_root)
err = -ENODEV;
kfree(newpath);
return err;
}
void update_inode(struct inode *inode, struct page *node_page)
{
struct f2fs_node *rn;
struct f2fs_inode *ri;
f2fs_wait_on_page_writeback(node_page, NODE, false);
rn = F2FS_NODE(node_page);
ri = &(rn->i);
ri->i_mode = cpu_to_le16(inode->i_mode);
ri->i_advise = F2FS_I(inode)->i_advise;
ri->i_uid = cpu_to_le32(inode->i_uid);
ri->i_gid = cpu_to_le32(inode->i_gid);
ri->i_links = cpu_to_le32(inode->i_nlink);
ri->i_size = cpu_to_le64(i_size_read(inode));
ri->i_blocks = cpu_to_le64(inode->i_blocks);
set_raw_extent(&F2FS_I(inode)->ext, &ri->i_ext);
set_raw_inline(F2FS_I(inode), ri);
ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth);
ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
ri->i_generation = cpu_to_le32(inode->i_generation);
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
if (old_valid_dev(inode->i_rdev)) {
ri->i_addr[0] =
cpu_to_le32(old_encode_dev(inode->i_rdev));
ri->i_addr[1] = 0;
} else {
ri->i_addr[0] = 0;
ri->i_addr[1] =
cpu_to_le32(new_encode_dev(inode->i_rdev));
ri->i_addr[2] = 0;
}
}
set_cold_node(inode, node_page);
set_page_dirty(node_page);
clear_inode_flag(F2FS_I(inode), FI_DIRTY_INODE);
}
static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
{
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
if (old_valid_dev(inode->i_rdev)) {
ri->i_addr[0] =
cpu_to_le32(old_encode_dev(inode->i_rdev));
ri->i_addr[1] = 0;
} else {
ri->i_addr[0] = 0;
ri->i_addr[1] =
cpu_to_le32(new_encode_dev(inode->i_rdev));
ri->i_addr[2] = 0;
}
}
}
static int tiocgdev(unsigned fd, unsigned cmd, unsigned int __user *ptr)
{
struct file *file = fget(fd);
struct tty_struct *real_tty;
if (!file)
return -EBADF;
if (file->f_op->ioctl != tty_ioctl)
return -EINVAL;
real_tty = (struct tty_struct *)file->private_data;
if (!real_tty)
return -EINVAL;
return put_user(new_encode_dev(tty_devnum(real_tty)), ptr);
}
int bpf_prog_offload_info_fill(struct bpf_prog_info *info,
struct bpf_prog *prog)
{
struct ns_get_path_bpf_prog_args args = {
.prog = prog,
.info = info,
};
struct bpf_prog_aux *aux = prog->aux;
struct inode *ns_inode;
struct path ns_path;
char __user *uinsns;
void *res;
u32 ulen;
res = ns_get_path_cb(&ns_path, bpf_prog_offload_info_fill_ns, &args);
if (IS_ERR(res)) {
if (!info->ifindex)
return -ENODEV;
return PTR_ERR(res);
}
down_read(&bpf_devs_lock);
if (!aux->offload) {
up_read(&bpf_devs_lock);
return -ENODEV;
}
ulen = info->jited_prog_len;
info->jited_prog_len = aux->offload->jited_len;
if (info->jited_prog_len & ulen) {
uinsns = u64_to_user_ptr(info->jited_prog_insns);
ulen = min_t(u32, info->jited_prog_len, ulen);
if (copy_to_user(uinsns, aux->offload->jited_image, ulen)) {
up_read(&bpf_devs_lock);
return -EFAULT;
}
}
up_read(&bpf_devs_lock);
ns_inode = ns_path.dentry->d_inode;
info->netns_dev = new_encode_dev(ns_inode->i_sb->s_dev);
info->netns_ino = ns_inode->i_ino;
path_put(&ns_path);
return 0;
}
/*
* updateSuper()
*
* update synchronously superblock if it is mounted read-write.
*/
int updateSuper(struct super_block *sb, uint state)
{
struct jfs_superblock *j_sb;
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct buffer_head *bh;
int rc;
if (sbi->flag & JFS_NOINTEGRITY) {
if (state == FM_DIRTY) {
sbi->p_state = state;
return 0;
} else if (state == FM_MOUNT) {
sbi->p_state = sbi->state;
state = FM_DIRTY;
} else if (state == FM_CLEAN) {
state = sbi->p_state;
} else
jfs_err("updateSuper: bad state");
} else if (sbi->state == FM_DIRTY)
return 0;
if ((rc = readSuper(sb, &bh)))
return rc;
j_sb = (struct jfs_superblock *)bh->b_data;
j_sb->s_state = cpu_to_le32(state);
sbi->state = state;
if (state == FM_MOUNT) {
/* record log's dev_t and mount serial number */
j_sb->s_logdev = cpu_to_le32(new_encode_dev(sbi->log->bdev->bd_dev));
j_sb->s_logserial = cpu_to_le32(sbi->log->serial);
} else if (state == FM_CLEAN) {
/*
* If this volume is shared with OS/2, OS/2 will need to
* recalculate DASD usage, since we don't deal with it.
*/
if (j_sb->s_flag & cpu_to_le32(JFS_DASD_ENABLED))
j_sb->s_flag |= cpu_to_le32(JFS_DASD_PRIME);
}
mark_buffer_dirty(bh);
sync_dirty_buffer(bh);
brelse(bh);
return 0;
}
static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
{
int extra_size = get_extra_isize(inode);
if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
if (old_valid_dev(inode->i_rdev)) {
ri->i_addr[extra_size] =
cpu_to_le32(old_encode_dev(inode->i_rdev));
ri->i_addr[extra_size + 1] = 0;
} else {
ri->i_addr[extra_size] = 0;
ri->i_addr[extra_size + 1] =
cpu_to_le32(new_encode_dev(inode->i_rdev));
ri->i_addr[extra_size + 2] = 0;
}
}
}
int updateSuper(struct super_block *sb, uint state)
{
struct jfs_superblock *j_sb;
struct jfs_sb_info *sbi = JFS_SBI(sb);
struct buffer_head *bh;
int rc;
if (sbi->flag & JFS_NOINTEGRITY) {
if (state == FM_DIRTY) {
sbi->p_state = state;
return 0;
} else if (state == FM_MOUNT) {
sbi->p_state = sbi->state;
state = FM_DIRTY;
} else if (state == FM_CLEAN) {
state = sbi->p_state;
} else
jfs_err("updateSuper: bad state");
} else if (sbi->state == FM_DIRTY)
return 0;
if ((rc = readSuper(sb, &bh)))
return rc;
j_sb = (struct jfs_superblock *)bh->b_data;
j_sb->s_state = cpu_to_le32(state);
sbi->state = state;
if (state == FM_MOUNT) {
j_sb->s_logdev = cpu_to_le32(new_encode_dev(sbi->log->bdev->bd_dev));
j_sb->s_logserial = cpu_to_le32(sbi->log->serial);
} else if (state == FM_CLEAN) {
if (j_sb->s_flag & cpu_to_le32(JFS_DASD_ENABLED))
j_sb->s_flag |= cpu_to_le32(JFS_DASD_PRIME);
}
mark_buffer_dirty(bh);
sync_dirty_buffer(bh);
brelse(bh);
return 0;
}
__kernel_dev_t _lkl_disk_add_disk(void *data, int sectors)
{
struct lkl_disk_dev *dev;
if (failed_init)
return 0;
if (!(dev=kzalloc(sizeof(*dev), GFP_KERNEL)))
return 0;
dev->data=data;
spin_lock_init(&dev->lock);
if (!(dev->queue=blk_init_queue(lkl_disk_request, &dev->lock))) {
kfree(dev);
return 0;
}
blk_queue_hardsect_size(dev->queue, 512);
dev->queue->queuedata = dev;
if (!(dev->gd=alloc_disk(1))) {
kfree(dev);
/* FIXME: del queue? */
return 0;
}
dev->gd->major = major;
dev->gd->first_minor = disks;
dev->gd->fops = &lkl_disk_ops;
dev->gd->queue = dev->queue;
dev->gd->private_data = dev;
snprintf (dev->gd->disk_name, 32, "lkldisk%d", disks);
set_capacity(dev->gd, sectors);
add_disk(dev->gd);
disks++;
printk("lkldisk: attached %s @ dev=%d:%d\n", dev->gd->disk_name, dev->gd->major, dev->gd->first_minor);
return new_encode_dev(MKDEV(dev->gd->major, dev->gd->first_minor));
}
/*
* Return the uid and gid of the last request for the mount
*
* When reconstructing an autofs mount tree with active mounts
* we need to re-connect to mounts that may have used the original
* process uid and gid (or string variations of them) for mount
* lookups within the map entry.
*/
static int autofs_dev_ioctl_requester(struct file *fp,
struct autofs_sb_info *sbi,
struct autofs_dev_ioctl *param)
{
struct autofs_info *ino;
struct nameidata nd;
const char *path;
dev_t devid;
int err = -ENOENT;
if (param->size <= sizeof(*param)) {
err = -EINVAL;
goto out;
}
path = param->path;
devid = new_encode_dev(sbi->sb->s_dev);
param->requester.uid = param->requester.gid = -1;
/* Get nameidata of the parent directory */
err = path_lookup(path, LOOKUP_PARENT, &nd);
if (err)
goto out;
err = autofs_dev_ioctl_find_super(&nd, devid);
if (err)
goto out_release;
ino = autofs4_dentry_ino(nd.path.dentry);
if (ino) {
err = 0;
autofs4_expire_wait(nd.path.dentry);
spin_lock(&sbi->fs_lock);
param->requester.uid = ino->uid;
param->requester.gid = ino->gid;
spin_unlock(&sbi->fs_lock);
}
out_release:
path_put(&nd.path);
out:
return err;
}