int
compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval)
{
/* {
syscallarg(const netbsd32_charp) path;
syscallarg(netbsd32_statfsp_t) buf;
} */
struct mount *mp;
struct statvfs *sp;
struct netbsd32_statfs s32;
int error;
struct vnode *vp;
error = namei_simple_user(SCARG_P32(uap, path),
NSM_FOLLOW_TRYEMULROOT, &vp);
if (error != 0)
return (error);
mp = vp->v_mount;
sp = &mp->mnt_stat;
vrele(vp);
if ((error = VFS_STATVFS(mp, sp)) != 0)
return (error);
sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
compat_20_netbsd32_from_statvfs(sp, &s32);
return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32));
}
int
compat_20_netbsd32_fstatfs(struct lwp *l, const struct compat_20_netbsd32_fstatfs_args *uap, register_t *retval)
{
/* {
syscallarg(int) fd;
syscallarg(netbsd32_statfsp_t) buf;
} */
file_t *fp;
struct mount *mp;
struct statvfs *sp;
struct netbsd32_statfs s32;
int error;
/* fd_getvnode() will use the descriptor for us */
if ((error = fd_getvnode(SCARG(uap, fd), &fp)) != 0)
return (error);
mp = ((struct vnode *)fp->f_data)->v_mount;
sp = &mp->mnt_stat;
if ((error = VFS_STATVFS(mp, sp)) != 0)
goto out;
sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
compat_20_netbsd32_from_statvfs(sp, &s32);
error = copyout(&s32, SCARG_P32(uap, buf), sizeof(s32));
out:
fd_putfile(SCARG(uap, fd));
return (error);
}
int
compat_20_netbsd32_statfs(struct lwp *l, const struct compat_20_netbsd32_statfs_args *uap, register_t *retval)
{
/* {
syscallarg(const netbsd32_charp) path;
syscallarg(netbsd32_statfsp_t) buf;
} */
struct mount *mp;
struct statvfs *sp;
struct netbsd32_statfs s32;
int error;
struct nameidata nd;
NDINIT(&nd, LOOKUP, FOLLOW | TRYEMULROOT, UIO_USERSPACE,
SCARG_P32(uap, path));
if ((error = namei(&nd)) != 0)
return (error);
mp = nd.ni_vp->v_mount;
sp = &mp->mnt_stat;
vrele(nd.ni_vp);
if ((error = VFS_STATVFS(mp, sp)) != 0)
return (error);
sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
compat_20_netbsd32_from_statvfs(sp, &s32);
return copyout(&s32, SCARG_P32(uap, buf), sizeof(s32));
}
int
compat_20_netbsd32_getfsstat(struct lwp *l, const struct compat_20_netbsd32_getfsstat_args *uap, register_t *retval)
{
/* {
syscallarg(netbsd32_statfsp_t) buf;
syscallarg(netbsd32_long) bufsize;
syscallarg(int) flags;
} */
struct mount *mp, *nmp;
struct statvfs *sp;
struct netbsd32_statfs sb32;
void *sfsp;
long count, maxcount, error;
maxcount = SCARG(uap, bufsize) / sizeof(struct netbsd32_statfs);
sfsp = SCARG_P32(uap, buf);
mutex_enter(&mountlist_lock);
count = 0;
for (mp = TAILQ_FIRST(&mountlist); mp != NULL; mp = nmp) {
if (vfs_busy(mp, &nmp)) {
continue;
}
if (sfsp && count < maxcount) {
sp = &mp->mnt_stat;
/*
* If MNT_NOWAIT or MNT_LAZY is specified, do not
* refresh the fsstat cache. MNT_WAIT or MNT_LAZY
* overrides MNT_NOWAIT.
*/
if (SCARG(uap, flags) != MNT_NOWAIT &&
SCARG(uap, flags) != MNT_LAZY &&
(SCARG(uap, flags) == MNT_WAIT ||
SCARG(uap, flags) == 0) &&
(error = VFS_STATVFS(mp, sp)) != 0) {
mutex_enter(&mountlist_lock);
vfs_unbusy(mp, false, &nmp);
continue;
}
sp->f_flag = mp->mnt_flag & MNT_VISFLAGMASK;
compat_20_netbsd32_from_statvfs(sp, &sb32);
error = copyout(&sb32, sfsp, sizeof(sb32));
if (error) {
vfs_unbusy(mp, false, NULL);
return (error);
}
sfsp = (char *)sfsp + sizeof(sb32);
}
count++;
mutex_enter(&mountlist_lock);
vfs_unbusy(mp, false, &nmp);
}
mutex_exit(&mountlist_lock);
if (sfsp && count > maxcount)
*retval = maxcount;
else
*retval = count;
return (0);
}
