#include "xfs_utils.h"
#include "xfs_dfrag.h"
#include "xfs_fsops.h"
+#include "xfs_vnodeops.h"
#include <linux/capability.h>
#include <linux/dcache.h>
xfs_handle_t handle;
xfs_fsop_handlereq_t hreq;
struct inode *inode;
- bhv_vnode_t *vp;
if (copy_from_user(&hreq, arg, sizeof(hreq)))
return -XFS_ERROR(EFAULT);
if (error)
return error;
- ASSERT(nd.dentry);
- ASSERT(nd.dentry->d_inode);
- inode = igrab(nd.dentry->d_inode);
- path_release(&nd);
+ ASSERT(nd.path.dentry);
+ ASSERT(nd.path.dentry->d_inode);
+ inode = igrab(nd.path.dentry->d_inode);
+ path_put(&nd.path);
break;
}
return -XFS_ERROR(EBADF);
}
- /* we need the vnode */
- vp = vn_from_inode(inode);
-
/* now we can grab the fsid */
- memcpy(&handle.ha_fsid, vp->v_vfsp->vfs_altfsid, sizeof(xfs_fsid_t));
+ memcpy(&handle.ha_fsid, XFS_I(inode)->i_mount->m_fixedfsid,
+ sizeof(xfs_fsid_t));
hsize = sizeof(xfs_fsid_t);
if (cmd != XFS_IOC_PATH_TO_FSHANDLE) {
- xfs_inode_t *ip;
+ xfs_inode_t *ip = XFS_I(inode);
int lock_mode;
/* need to get access to the xfs_inode to read the generation */
- ip = xfs_vtoi(vp);
- ASSERT(ip);
lock_mode = xfs_ilock_map_shared(ip);
/* fill in fid section of handle from inode */
- handle.ha_fid.xfs_fid_len = sizeof(xfs_fid_t) -
- sizeof(handle.ha_fid.xfs_fid_len);
- handle.ha_fid.xfs_fid_pad = 0;
- handle.ha_fid.xfs_fid_gen = ip->i_d.di_gen;
- handle.ha_fid.xfs_fid_ino = ip->i_ino;
+ handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
+ sizeof(handle.ha_fid.fid_len);
+ handle.ha_fid.fid_pad = 0;
+ handle.ha_fid.fid_gen = ip->i_d.di_gen;
+ handle.ha_fid.fid_ino = ip->i_ino;
xfs_iunlock_map_shared(ip, lock_mode);
/*
- * Convert userspace handle data into vnode (and inode).
- * We [ab]use the fact that all the fsop_handlereq ioctl calls
- * have a data structure argument whose first component is always
- * a xfs_fsop_handlereq_t, so we can cast to and from this type.
- * This allows us to optimise the copy_from_user calls and gives
- * a handy, shared routine.
+ * Convert userspace handle data into inode.
+ *
+ * We use the fact that all the fsop_handlereq ioctl calls have a data
+ * structure argument whose first component is always a xfs_fsop_handlereq_t,
+ * so we can pass that sub structure into this handy, shared routine.
*
- * If no error, caller must always VN_RELE the returned vp.
+ * If no error, caller must always iput the returned inode.
*/
STATIC int
xfs_vget_fsop_handlereq(
xfs_mount_t *mp,
struct inode *parinode, /* parent inode pointer */
xfs_fsop_handlereq_t *hreq,
- bhv_vnode_t **vp,
struct inode **inode)
{
void __user *hanp;
xfs_handle_t *handlep;
xfs_handle_t handle;
xfs_inode_t *ip;
- struct inode *inodep;
- bhv_vnode_t *vpp;
xfs_ino_t ino;
__u32 igen;
int error;
if (hlen < sizeof(*handlep))
memset(((char *)handlep) + hlen, 0, sizeof(*handlep) - hlen);
if (hlen > sizeof(handlep->ha_fsid)) {
- if (handlep->ha_fid.xfs_fid_len !=
- (hlen - sizeof(handlep->ha_fsid)
- - sizeof(handlep->ha_fid.xfs_fid_len))
- || handlep->ha_fid.xfs_fid_pad)
+ if (handlep->ha_fid.fid_len !=
+ (hlen - sizeof(handlep->ha_fsid) -
+ sizeof(handlep->ha_fid.fid_len)) ||
+ handlep->ha_fid.fid_pad)
return XFS_ERROR(EINVAL);
}
* Crack the handle, obtain the inode # & generation #
*/
xfid = (struct xfs_fid *)&handlep->ha_fid;
- if (xfid->xfs_fid_len == sizeof(*xfid) - sizeof(xfid->xfs_fid_len)) {
- ino = xfid->xfs_fid_ino;
- igen = xfid->xfs_fid_gen;
+ if (xfid->fid_len == sizeof(*xfid) - sizeof(xfid->fid_len)) {
+ ino = xfid->fid_ino;
+ igen = xfid->fid_gen;
} else {
return XFS_ERROR(EINVAL);
}
/*
- * Get the XFS inode, building a vnode to go with it.
+ * Get the XFS inode, building a Linux inode to go with it.
*/
error = xfs_iget(mp, NULL, ino, 0, XFS_ILOCK_SHARED, &ip, 0);
if (error)
return error;
if (ip == NULL)
return XFS_ERROR(EIO);
- if (ip->i_d.di_mode == 0 || ip->i_d.di_gen != igen) {
+ if (ip->i_d.di_gen != igen) {
xfs_iput_new(ip, XFS_ILOCK_SHARED);
return XFS_ERROR(ENOENT);
}
- vpp = XFS_ITOV(ip);
- inodep = vn_to_inode(vpp);
xfs_iunlock(ip, XFS_ILOCK_SHARED);
- *vp = vpp;
- *inode = inodep;
+ *inode = XFS_ITOV(ip);
return 0;
}
struct file *filp;
struct inode *inode;
struct dentry *dentry;
- bhv_vnode_t *vp;
xfs_fsop_handlereq_t hreq;
if (!capable(CAP_SYS_ADMIN))
if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
return -XFS_ERROR(EFAULT);
- error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode);
+ error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &inode);
if (error)
return -error;
return new_fd;
}
+/*
+ * This is a copy from fs/namei.c:vfs_readlink(), except for removing it's
+ * unused first argument.
+ */
+STATIC int
+do_readlink(
+ char __user *buffer,
+ int buflen,
+ const char *link)
+{
+ int len;
+
+ len = PTR_ERR(link);
+ if (IS_ERR(link))
+ goto out;
+
+ len = strlen(link);
+ if (len > (unsigned) buflen)
+ len = buflen;
+ if (copy_to_user(buffer, link, len))
+ len = -EFAULT;
+ out:
+ return len;
+}
+
+
STATIC int
xfs_readlink_by_handle(
xfs_mount_t *mp,
void __user *arg,
struct inode *parinode)
{
- int error;
- struct iovec aiov;
- struct uio auio;
struct inode *inode;
xfs_fsop_handlereq_t hreq;
- bhv_vnode_t *vp;
__u32 olen;
+ void *link;
+ int error;
if (!capable(CAP_SYS_ADMIN))
return -XFS_ERROR(EPERM);
if (copy_from_user(&hreq, arg, sizeof(xfs_fsop_handlereq_t)))
return -XFS_ERROR(EFAULT);
- error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &vp, &inode);
+ error = xfs_vget_fsop_handlereq(mp, parinode, &hreq, &inode);
if (error)
return -error;
/* Restrict this handle operation to symlinks only. */
if (!S_ISLNK(inode->i_mode)) {
- VN_RELE(vp);
- return -XFS_ERROR(EINVAL);
+ error = -XFS_ERROR(EINVAL);
+ goto out_iput;
}
if (copy_from_user(&olen, hreq.ohandlen, sizeof(__u32))) {
- VN_RELE(vp);
- return -XFS_ERROR(EFAULT);
+ error = -XFS_ERROR(EFAULT);
+ goto out_iput;
}
- aiov.iov_len = olen;
- aiov.iov_base = hreq.ohandle;
- auio.uio_iov = (struct kvec *)&aiov;
- auio.uio_iovcnt = 1;
- auio.uio_offset = 0;
- auio.uio_segflg = UIO_USERSPACE;
- auio.uio_resid = olen;
+ link = kmalloc(MAXPATHLEN+1, GFP_KERNEL);
+ if (!link)
+ goto out_iput;
- error = bhv_vop_readlink(vp, &auio, IO_INVIS, NULL);
- VN_RELE(vp);
+ error = -xfs_readlink(XFS_I(inode), link);
if (error)
- return -error;
+ goto out_kfree;
+ error = do_readlink(hreq.ohandle, olen, link);
+ if (error)
+ goto out_kfree;
- return (olen - auio.uio_resid);
+ out_kfree:
+ kfree(link);
+ out_iput:
+ iput(inode);
+ return error;
}
STATIC int
struct fsdmidata fsd;
xfs_fsop_setdm_handlereq_t dmhreq;
struct inode *inode;
- bhv_desc_t *bdp;
- bhv_vnode_t *vp;
if (!capable(CAP_MKNOD))
return -XFS_ERROR(EPERM);
if (copy_from_user(&dmhreq, arg, sizeof(xfs_fsop_setdm_handlereq_t)))
return -XFS_ERROR(EFAULT);
- error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &vp, &inode);
+ error = xfs_vget_fsop_handlereq(mp, parinode, &dmhreq.hreq, &inode);
if (error)
return -error;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode)) {
- VN_RELE(vp);
- return -XFS_ERROR(EPERM);
+ error = -XFS_ERROR(EPERM);
+ goto out;
}
if (copy_from_user(&fsd, dmhreq.data, sizeof(fsd))) {
- VN_RELE(vp);
- return -XFS_ERROR(EFAULT);
+ error = -XFS_ERROR(EFAULT);
+ goto out;
}
- bdp = bhv_base_unlocked(VN_BHV_HEAD(vp));
- error = xfs_set_dmattrs(bdp, fsd.fsd_dmevmask, fsd.fsd_dmstate, NULL);
+ error = -xfs_set_dmattrs(XFS_I(inode), fsd.fsd_dmevmask,
+ fsd.fsd_dmstate);
- VN_RELE(vp);
- if (error)
- return -error;
- return 0;
+ out:
+ iput(inode);
+ return error;
}
STATIC int
attrlist_cursor_kern_t *cursor;
xfs_fsop_attrlist_handlereq_t al_hreq;
struct inode *inode;
- bhv_vnode_t *vp;
char *kbuf;
if (!capable(CAP_SYS_ADMIN))
if (al_hreq.buflen > XATTR_LIST_MAX)
return -XFS_ERROR(EINVAL);
- error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq,
- &vp, &inode);
+ error = xfs_vget_fsop_handlereq(mp, parinode, &al_hreq.hreq, &inode);
if (error)
goto out;
goto out_vn_rele;
cursor = (attrlist_cursor_kern_t *)&al_hreq.pos;
- error = bhv_vop_attr_list(vp, kbuf, al_hreq.buflen, al_hreq.flags,
- cursor, NULL);
+ error = xfs_attr_list(XFS_I(inode), kbuf, al_hreq.buflen,
+ al_hreq.flags, cursor);
if (error)
goto out_kfree;
out_kfree:
kfree(kbuf);
out_vn_rele:
- VN_RELE(vp);
+ iput(inode);
out:
return -error;
}
STATIC int
xfs_attrmulti_attr_get(
- bhv_vnode_t *vp,
+ struct inode *inode,
char *name,
char __user *ubuf,
__uint32_t *len,
{
char *kbuf;
int error = EFAULT;
-
+
if (*len > XATTR_SIZE_MAX)
return EINVAL;
kbuf = kmalloc(*len, GFP_KERNEL);
if (!kbuf)
return ENOMEM;
- error = bhv_vop_attr_get(vp, name, kbuf, len, flags, NULL);
+ error = xfs_attr_get(XFS_I(inode), name, kbuf, (int *)len, flags);
if (error)
goto out_kfree;
STATIC int
xfs_attrmulti_attr_set(
- bhv_vnode_t *vp,
+ struct inode *inode,
char *name,
const char __user *ubuf,
__uint32_t len,
char *kbuf;
int error = EFAULT;
- if (IS_RDONLY(&vp->v_inode))
- return -EROFS;
- if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode))
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return EPERM;
if (len > XATTR_SIZE_MAX)
return EINVAL;
if (copy_from_user(kbuf, ubuf, len))
goto out_kfree;
-
- error = bhv_vop_attr_set(vp, name, kbuf, len, flags, NULL);
+
+ error = xfs_attr_set(XFS_I(inode), name, kbuf, len, flags);
out_kfree:
kfree(kbuf);
STATIC int
xfs_attrmulti_attr_remove(
- bhv_vnode_t *vp,
+ struct inode *inode,
char *name,
__uint32_t flags)
{
- if (IS_RDONLY(&vp->v_inode))
- return -EROFS;
- if (IS_IMMUTABLE(&vp->v_inode) || IS_APPEND(&vp->v_inode))
+ if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
return EPERM;
- return bhv_vop_attr_remove(vp, name, flags, NULL);
+ return xfs_attr_remove(XFS_I(inode), name, flags);
}
STATIC int
xfs_attrmulti_by_handle(
xfs_mount_t *mp,
void __user *arg,
+ struct file *parfilp,
struct inode *parinode)
{
int error;
xfs_attr_multiop_t *ops;
xfs_fsop_attrmulti_handlereq_t am_hreq;
struct inode *inode;
- bhv_vnode_t *vp;
unsigned int i, size;
char *attr_name;
if (copy_from_user(&am_hreq, arg, sizeof(xfs_fsop_attrmulti_handlereq_t)))
return -XFS_ERROR(EFAULT);
- error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &vp, &inode);
+ error = xfs_vget_fsop_handlereq(mp, parinode, &am_hreq.hreq, &inode);
if (error)
goto out;
switch (ops[i].am_opcode) {
case ATTR_OP_GET:
- ops[i].am_error = xfs_attrmulti_attr_get(vp,
+ ops[i].am_error = xfs_attrmulti_attr_get(inode,
attr_name, ops[i].am_attrvalue,
&ops[i].am_length, ops[i].am_flags);
break;
case ATTR_OP_SET:
- ops[i].am_error = xfs_attrmulti_attr_set(vp,
+ ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
+ if (ops[i].am_error)
+ break;
+ ops[i].am_error = xfs_attrmulti_attr_set(inode,
attr_name, ops[i].am_attrvalue,
ops[i].am_length, ops[i].am_flags);
+ mnt_drop_write(parfilp->f_path.mnt);
break;
case ATTR_OP_REMOVE:
- ops[i].am_error = xfs_attrmulti_attr_remove(vp,
+ ops[i].am_error = mnt_want_write(parfilp->f_path.mnt);
+ if (ops[i].am_error)
+ break;
+ ops[i].am_error = xfs_attrmulti_attr_remove(inode,
attr_name, ops[i].am_flags);
+ mnt_drop_write(parfilp->f_path.mnt);
break;
default:
ops[i].am_error = EINVAL;
out_kfree_ops:
kfree(ops);
out_vn_rele:
- VN_RELE(vp);
+ iput(inode);
out:
return -error;
}
-/* prototypes for a few of the stack-hungry cases that have
- * their own functions. Functions are defined after their use
- * so gcc doesn't get fancy and inline them with -03 */
-
STATIC int
xfs_ioc_space(
- bhv_desc_t *bdp,
+ struct xfs_inode *ip,
struct inode *inode,
struct file *filp,
- int flags,
+ int ioflags,
unsigned int cmd,
- void __user *arg);
+ void __user *arg)
+{
+ xfs_flock64_t bf;
+ int attr_flags = 0;
+ int error;
-STATIC int
-xfs_ioc_bulkstat(
- xfs_mount_t *mp,
- unsigned int cmd,
- void __user *arg);
+ if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
+ return -XFS_ERROR(EPERM);
-STATIC int
-xfs_ioc_fsgeometry_v1(
- xfs_mount_t *mp,
- void __user *arg);
+ if (!(filp->f_mode & FMODE_WRITE))
+ return -XFS_ERROR(EBADF);
-STATIC int
-xfs_ioc_fsgeometry(
- xfs_mount_t *mp,
- void __user *arg);
+ if (!S_ISREG(inode->i_mode))
+ return -XFS_ERROR(EINVAL);
-STATIC int
-xfs_ioc_xattr(
- bhv_vnode_t *vp,
- xfs_inode_t *ip,
- struct file *filp,
- unsigned int cmd,
- void __user *arg);
+ if (copy_from_user(&bf, arg, sizeof(bf)))
+ return -XFS_ERROR(EFAULT);
-STATIC int
-xfs_ioc_getbmap(
- bhv_desc_t *bdp,
- int flags,
- unsigned int cmd,
- void __user *arg);
+ if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
+ attr_flags |= ATTR_NONBLOCK;
+ if (ioflags & IO_INVIS)
+ attr_flags |= ATTR_DMI;
-STATIC int
-xfs_ioc_getbmapx(
- bhv_desc_t *bdp,
- void __user *arg);
+ error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos,
+ NULL, attr_flags);
+ return -error;
+}
-int
-xfs_ioctl(
- bhv_desc_t *bdp,
- struct inode *inode,
- struct file *filp,
- int ioflags,
+STATIC int
+xfs_ioc_bulkstat(
+ xfs_mount_t *mp,
unsigned int cmd,
void __user *arg)
{
+ xfs_fsop_bulkreq_t bulkreq;
+ int count; /* # of records returned */
+ xfs_ino_t inlast; /* last inode number */
+ int done;
int error;
- bhv_vnode_t *vp;
- xfs_inode_t *ip;
- xfs_mount_t *mp;
- vp = vn_from_inode(inode);
+ /* done = 1 if there are more stats to get and if bulkstat */
+ /* should be called again (unused here, but used in dmapi) */
- vn_trace_entry(vp, "xfs_ioctl", (inst_t *)__return_address);
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
- ip = XFS_BHVTOI(bdp);
- mp = ip->i_mount;
+ if (XFS_FORCED_SHUTDOWN(mp))
+ return -XFS_ERROR(EIO);
- switch (cmd) {
+ if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
+ return -XFS_ERROR(EFAULT);
- case XFS_IOC_ALLOCSP:
- case XFS_IOC_FREESP:
- case XFS_IOC_RESVSP:
- case XFS_IOC_UNRESVSP:
- case XFS_IOC_ALLOCSP64:
- case XFS_IOC_FREESP64:
- case XFS_IOC_RESVSP64:
- case XFS_IOC_UNRESVSP64:
- /*
- * Only allow the sys admin to reserve space unless
- * unwritten extents are enabled.
- */
- if (!XFS_SB_VERSION_HASEXTFLGBIT(&mp->m_sb) &&
- !capable(CAP_SYS_ADMIN))
- return -EPERM;
+ if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
+ return -XFS_ERROR(EFAULT);
- return xfs_ioc_space(bdp, inode, filp, ioflags, cmd, arg);
+ if ((count = bulkreq.icount) <= 0)
+ return -XFS_ERROR(EINVAL);
- case XFS_IOC_DIOINFO: {
- struct dioattr da;
- xfs_buftarg_t *target =
- (ip->i_d.di_flags & XFS_DIFLAG_REALTIME) ?
- mp->m_rtdev_targp : mp->m_ddev_targp;
+ if (bulkreq.ubuffer == NULL)
+ return -XFS_ERROR(EINVAL);
- da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
- da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
+ if (cmd == XFS_IOC_FSINUMBERS)
+ error = xfs_inumbers(mp, &inlast, &count,
+ bulkreq.ubuffer, xfs_inumbers_fmt);
+ else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
+ error = xfs_bulkstat_single(mp, &inlast,
+ bulkreq.ubuffer, &done);
+ else /* XFS_IOC_FSBULKSTAT */
+ error = xfs_bulkstat(mp, &inlast, &count,
+ (bulkstat_one_pf)xfs_bulkstat_one, NULL,
+ sizeof(xfs_bstat_t), bulkreq.ubuffer,
+ BULKSTAT_FG_QUICK, &done);
- if (copy_to_user(arg, &da, sizeof(da)))
- return -XFS_ERROR(EFAULT);
- return 0;
- }
+ if (error)
+ return -error;
- case XFS_IOC_FSBULKSTAT_SINGLE:
- case XFS_IOC_FSBULKSTAT:
- case XFS_IOC_FSINUMBERS:
- return xfs_ioc_bulkstat(mp, cmd, arg);
+ if (bulkreq.ocount != NULL) {
+ if (copy_to_user(bulkreq.lastip, &inlast,
+ sizeof(xfs_ino_t)))
+ return -XFS_ERROR(EFAULT);
- case XFS_IOC_FSGEOMETRY_V1:
- return xfs_ioc_fsgeometry_v1(mp, arg);
+ if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
+ return -XFS_ERROR(EFAULT);
+ }
- case XFS_IOC_FSGEOMETRY:
- return xfs_ioc_fsgeometry(mp, arg);
+ return 0;
+}
- case XFS_IOC_GETVERSION:
- return put_user(inode->i_generation, (int __user *)arg);
+STATIC int
+xfs_ioc_fsgeometry_v1(
+ xfs_mount_t *mp,
+ void __user *arg)
+{
+ xfs_fsop_geom_v1_t fsgeo;
+ int error;
- case XFS_IOC_GETXFLAGS:
- case XFS_IOC_SETXFLAGS:
- case XFS_IOC_FSGETXATTR:
- case XFS_IOC_FSSETXATTR:
- case XFS_IOC_FSGETXATTRA:
- return xfs_ioc_xattr(vp, ip, filp, cmd, arg);
+ error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3);
+ if (error)
+ return -error;
- case XFS_IOC_FSSETDM: {
- struct fsdmidata dmi;
+ if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
+ return -XFS_ERROR(EFAULT);
+ return 0;
+}
- if (copy_from_user(&dmi, arg, sizeof(dmi)))
- return -XFS_ERROR(EFAULT);
+STATIC int
+xfs_ioc_fsgeometry(
+ xfs_mount_t *mp,
+ void __user *arg)
+{
+ xfs_fsop_geom_t fsgeo;
+ int error;
- error = xfs_set_dmattrs(bdp, dmi.fsd_dmevmask, dmi.fsd_dmstate,
- NULL);
+ error = xfs_fs_geometry(mp, &fsgeo, 4);
+ if (error)
return -error;
- }
-
- case XFS_IOC_GETBMAP:
- case XFS_IOC_GETBMAPA:
- return xfs_ioc_getbmap(bdp, ioflags, cmd, arg);
-
- case XFS_IOC_GETBMAPX:
- return xfs_ioc_getbmapx(bdp, arg);
- case XFS_IOC_FD_TO_HANDLE:
- case XFS_IOC_PATH_TO_HANDLE:
- case XFS_IOC_PATH_TO_FSHANDLE:
- return xfs_find_handle(cmd, arg);
+ if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
+ return -XFS_ERROR(EFAULT);
+ return 0;
+}
- case XFS_IOC_OPEN_BY_HANDLE:
- return xfs_open_by_handle(mp, arg, filp, inode);
+/*
+ * Linux extended inode flags interface.
+ */
- case XFS_IOC_FSSETDM_BY_HANDLE:
- return xfs_fssetdm_by_handle(mp, arg, inode);
+STATIC unsigned int
+xfs_merge_ioc_xflags(
+ unsigned int flags,
+ unsigned int start)
+{
+ unsigned int xflags = start;
- case XFS_IOC_READLINK_BY_HANDLE:
- return xfs_readlink_by_handle(mp, arg, inode);
+ if (flags & FS_IMMUTABLE_FL)
+ xflags |= XFS_XFLAG_IMMUTABLE;
+ else
+ xflags &= ~XFS_XFLAG_IMMUTABLE;
+ if (flags & FS_APPEND_FL)
+ xflags |= XFS_XFLAG_APPEND;
+ else
+ xflags &= ~XFS_XFLAG_APPEND;
+ if (flags & FS_SYNC_FL)
+ xflags |= XFS_XFLAG_SYNC;
+ else
+ xflags &= ~XFS_XFLAG_SYNC;
+ if (flags & FS_NOATIME_FL)
+ xflags |= XFS_XFLAG_NOATIME;
+ else
+ xflags &= ~XFS_XFLAG_NOATIME;
+ if (flags & FS_NODUMP_FL)
+ xflags |= XFS_XFLAG_NODUMP;
+ else
+ xflags &= ~XFS_XFLAG_NODUMP;
- case XFS_IOC_ATTRLIST_BY_HANDLE:
- return xfs_attrlist_by_handle(mp, arg, inode);
+ return xflags;
+}
- case XFS_IOC_ATTRMULTI_BY_HANDLE:
- return xfs_attrmulti_by_handle(mp, arg, inode);
+STATIC unsigned int
+xfs_di2lxflags(
+ __uint16_t di_flags)
+{
+ unsigned int flags = 0;
- case XFS_IOC_SWAPEXT: {
- error = xfs_swapext((struct xfs_swapext __user *)arg);
- return -error;
- }
+ if (di_flags & XFS_DIFLAG_IMMUTABLE)
+ flags |= FS_IMMUTABLE_FL;
+ if (di_flags & XFS_DIFLAG_APPEND)
+ flags |= FS_APPEND_FL;
+ if (di_flags & XFS_DIFLAG_SYNC)
+ flags |= FS_SYNC_FL;
+ if (di_flags & XFS_DIFLAG_NOATIME)
+ flags |= FS_NOATIME_FL;
+ if (di_flags & XFS_DIFLAG_NODUMP)
+ flags |= FS_NODUMP_FL;
+ return flags;
+}
+
+STATIC int
+xfs_ioc_fsgetxattr(
+ xfs_inode_t *ip,
+ int attr,
+ void __user *arg)
+{
+ struct fsxattr fa;
+
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
+ fa.fsx_xflags = xfs_ip2xflags(ip);
+ fa.fsx_extsize = ip->i_d.di_extsize << ip->i_mount->m_sb.sb_blocklog;
+ fa.fsx_projid = ip->i_d.di_projid;
+
+ if (attr) {
+ if (ip->i_afp) {
+ if (ip->i_afp->if_flags & XFS_IFEXTENTS)
+ fa.fsx_nextents = ip->i_afp->if_bytes /
+ sizeof(xfs_bmbt_rec_t);
+ else
+ fa.fsx_nextents = ip->i_d.di_anextents;
+ } else
+ fa.fsx_nextents = 0;
+ } else {
+ if (ip->i_df.if_flags & XFS_IFEXTENTS)
+ fa.fsx_nextents = ip->i_df.if_bytes /
+ sizeof(xfs_bmbt_rec_t);
+ else
+ fa.fsx_nextents = ip->i_d.di_nextents;
+ }
+ xfs_iunlock(ip, XFS_ILOCK_SHARED);
+
+ if (copy_to_user(arg, &fa, sizeof(fa)))
+ return -EFAULT;
+ return 0;
+}
+
+STATIC int
+xfs_ioc_fssetxattr(
+ xfs_inode_t *ip,
+ struct file *filp,
+ void __user *arg)
+{
+ struct fsxattr fa;
+ struct bhv_vattr *vattr;
+ int error;
+ int attr_flags;
+
+ if (copy_from_user(&fa, arg, sizeof(fa)))
+ return -EFAULT;
+
+ vattr = kmalloc(sizeof(*vattr), GFP_KERNEL);
+ if (unlikely(!vattr))
+ return -ENOMEM;
+
+ attr_flags = 0;
+ if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
+ attr_flags |= ATTR_NONBLOCK;
+
+ vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID;
+ vattr->va_xflags = fa.fsx_xflags;
+ vattr->va_extsize = fa.fsx_extsize;
+ vattr->va_projid = fa.fsx_projid;
+
+ error = -xfs_setattr(ip, vattr, attr_flags, NULL);
+ if (!error)
+ vn_revalidate(XFS_ITOV(ip)); /* update flags */
+ kfree(vattr);
+ return 0;
+}
+
+STATIC int
+xfs_ioc_getxflags(
+ xfs_inode_t *ip,
+ void __user *arg)
+{
+ unsigned int flags;
+
+ flags = xfs_di2lxflags(ip->i_d.di_flags);
+ if (copy_to_user(arg, &flags, sizeof(flags)))
+ return -EFAULT;
+ return 0;
+}
+
+STATIC int
+xfs_ioc_setxflags(
+ xfs_inode_t *ip,
+ struct file *filp,
+ void __user *arg)
+{
+ struct bhv_vattr *vattr;
+ unsigned int flags;
+ int attr_flags;
+ int error;
+
+ if (copy_from_user(&flags, arg, sizeof(flags)))
+ return -EFAULT;
+
+ if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
+ FS_NOATIME_FL | FS_NODUMP_FL | \
+ FS_SYNC_FL))
+ return -EOPNOTSUPP;
+
+ vattr = kmalloc(sizeof(*vattr), GFP_KERNEL);
+ if (unlikely(!vattr))
+ return -ENOMEM;
+
+ attr_flags = 0;
+ if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
+ attr_flags |= ATTR_NONBLOCK;
+
+ vattr->va_mask = XFS_AT_XFLAGS;
+ vattr->va_xflags = xfs_merge_ioc_xflags(flags, xfs_ip2xflags(ip));
+
+ error = -xfs_setattr(ip, vattr, attr_flags, NULL);
+ if (likely(!error))
+ vn_revalidate(XFS_ITOV(ip)); /* update flags */
+ kfree(vattr);
+ return error;
+}
+
+STATIC int
+xfs_ioc_getbmap(
+ struct xfs_inode *ip,
+ int ioflags,
+ unsigned int cmd,
+ void __user *arg)
+{
+ struct getbmap bm;
+ int iflags;
+ int error;
+
+ if (copy_from_user(&bm, arg, sizeof(bm)))
+ return -XFS_ERROR(EFAULT);
+
+ if (bm.bmv_count < 2)
+ return -XFS_ERROR(EINVAL);
+
+ iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
+ if (ioflags & IO_INVIS)
+ iflags |= BMV_IF_NO_DMAPI_READ;
+
+ error = xfs_getbmap(ip, &bm, (struct getbmap __user *)arg+1, iflags);
+ if (error)
+ return -error;
+
+ if (copy_to_user(arg, &bm, sizeof(bm)))
+ return -XFS_ERROR(EFAULT);
+ return 0;
+}
+
+STATIC int
+xfs_ioc_getbmapx(
+ struct xfs_inode *ip,
+ void __user *arg)
+{
+ struct getbmapx bmx;
+ struct getbmap bm;
+ int iflags;
+ int error;
+
+ if (copy_from_user(&bmx, arg, sizeof(bmx)))
+ return -XFS_ERROR(EFAULT);
+
+ if (bmx.bmv_count < 2)
+ return -XFS_ERROR(EINVAL);
+
+ /*
+ * Map input getbmapx structure to a getbmap
+ * structure for xfs_getbmap.
+ */
+ GETBMAP_CONVERT(bmx, bm);
+
+ iflags = bmx.bmv_iflags;
+
+ if (iflags & (~BMV_IF_VALID))
+ return -XFS_ERROR(EINVAL);
+
+ iflags |= BMV_IF_EXTENDED;
+
+ error = xfs_getbmap(ip, &bm, (struct getbmapx __user *)arg+1, iflags);
+ if (error)
+ return -error;
+
+ GETBMAP_CONVERT(bm, bmx);
+
+ if (copy_to_user(arg, &bmx, sizeof(bmx)))
+ return -XFS_ERROR(EFAULT);
+
+ return 0;
+}
+
+int
+xfs_ioctl(
+ xfs_inode_t *ip,
+ struct file *filp,
+ int ioflags,
+ unsigned int cmd,
+ void __user *arg)
+{
+ struct inode *inode = filp->f_path.dentry->d_inode;
+ xfs_mount_t *mp = ip->i_mount;
+ int error;
+
+ xfs_itrace_entry(XFS_I(inode));
+ switch (cmd) {
+
+ case XFS_IOC_ALLOCSP:
+ case XFS_IOC_FREESP:
+ case XFS_IOC_RESVSP:
+ case XFS_IOC_UNRESVSP:
+ case XFS_IOC_ALLOCSP64:
+ case XFS_IOC_FREESP64:
+ case XFS_IOC_RESVSP64:
+ case XFS_IOC_UNRESVSP64:
+ /*
+ * Only allow the sys admin to reserve space unless
+ * unwritten extents are enabled.
+ */
+ if (!xfs_sb_version_hasextflgbit(&mp->m_sb) &&
+ !capable(CAP_SYS_ADMIN))
+ return -EPERM;
+
+ return xfs_ioc_space(ip, inode, filp, ioflags, cmd, arg);
+
+ case XFS_IOC_DIOINFO: {
+ struct dioattr da;
+ xfs_buftarg_t *target =
+ XFS_IS_REALTIME_INODE(ip) ?
+ mp->m_rtdev_targp : mp->m_ddev_targp;
+
+ da.d_mem = da.d_miniosz = 1 << target->bt_sshift;
+ da.d_maxiosz = INT_MAX & ~(da.d_miniosz - 1);
+
+ if (copy_to_user(arg, &da, sizeof(da)))
+ return -XFS_ERROR(EFAULT);
+ return 0;
+ }
+
+ case XFS_IOC_FSBULKSTAT_SINGLE:
+ case XFS_IOC_FSBULKSTAT:
+ case XFS_IOC_FSINUMBERS:
+ return xfs_ioc_bulkstat(mp, cmd, arg);
+
+ case XFS_IOC_FSGEOMETRY_V1:
+ return xfs_ioc_fsgeometry_v1(mp, arg);
+
+ case XFS_IOC_FSGEOMETRY:
+ return xfs_ioc_fsgeometry(mp, arg);
+
+ case XFS_IOC_GETVERSION:
+ return put_user(inode->i_generation, (int __user *)arg);
+
+ case XFS_IOC_FSGETXATTR:
+ return xfs_ioc_fsgetxattr(ip, 0, arg);
+ case XFS_IOC_FSGETXATTRA:
+ return xfs_ioc_fsgetxattr(ip, 1, arg);
+ case XFS_IOC_FSSETXATTR:
+ return xfs_ioc_fssetxattr(ip, filp, arg);
+ case XFS_IOC_GETXFLAGS:
+ return xfs_ioc_getxflags(ip, arg);
+ case XFS_IOC_SETXFLAGS:
+ return xfs_ioc_setxflags(ip, filp, arg);
+
+ case XFS_IOC_FSSETDM: {
+ struct fsdmidata dmi;
+
+ if (copy_from_user(&dmi, arg, sizeof(dmi)))
+ return -XFS_ERROR(EFAULT);
+
+ error = xfs_set_dmattrs(ip, dmi.fsd_dmevmask,
+ dmi.fsd_dmstate);
+ return -error;
+ }
+
+ case XFS_IOC_GETBMAP:
+ case XFS_IOC_GETBMAPA:
+ return xfs_ioc_getbmap(ip, ioflags, cmd, arg);
+
+ case XFS_IOC_GETBMAPX:
+ return xfs_ioc_getbmapx(ip, arg);
+
+ case XFS_IOC_FD_TO_HANDLE:
+ case XFS_IOC_PATH_TO_HANDLE:
+ case XFS_IOC_PATH_TO_FSHANDLE:
+ return xfs_find_handle(cmd, arg);
+
+ case XFS_IOC_OPEN_BY_HANDLE:
+ return xfs_open_by_handle(mp, arg, filp, inode);
+
+ case XFS_IOC_FSSETDM_BY_HANDLE:
+ return xfs_fssetdm_by_handle(mp, arg, inode);
+
+ case XFS_IOC_READLINK_BY_HANDLE:
+ return xfs_readlink_by_handle(mp, arg, inode);
+
+ case XFS_IOC_ATTRLIST_BY_HANDLE:
+ return xfs_attrlist_by_handle(mp, arg, inode);
+
+ case XFS_IOC_ATTRMULTI_BY_HANDLE:
+ return xfs_attrmulti_by_handle(mp, arg, filp, inode);
+
+ case XFS_IOC_SWAPEXT: {
+ error = xfs_swapext((struct xfs_swapext __user *)arg);
+ return -error;
+ }
case XFS_IOC_FSCOUNTS: {
xfs_fsop_counts_t out;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
- error = xfs_errortag_clearall(mp);
+ error = xfs_errortag_clearall(mp, 1);
return -error;
default:
return -ENOTTY;
}
}
-
-STATIC int
-xfs_ioc_space(
- bhv_desc_t *bdp,
- struct inode *inode,
- struct file *filp,
- int ioflags,
- unsigned int cmd,
- void __user *arg)
-{
- xfs_flock64_t bf;
- int attr_flags = 0;
- int error;
-
- if (inode->i_flags & (S_IMMUTABLE|S_APPEND))
- return -XFS_ERROR(EPERM);
-
- if (!(filp->f_mode & FMODE_WRITE))
- return -XFS_ERROR(EBADF);
-
- if (!S_ISREG(inode->i_mode))
- return -XFS_ERROR(EINVAL);
-
- if (copy_from_user(&bf, arg, sizeof(bf)))
- return -XFS_ERROR(EFAULT);
-
- if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
- attr_flags |= ATTR_NONBLOCK;
- if (ioflags & IO_INVIS)
- attr_flags |= ATTR_DMI;
-
- error = xfs_change_file_space(bdp, cmd, &bf, filp->f_pos,
- NULL, attr_flags);
- return -error;
-}
-
-STATIC int
-xfs_ioc_bulkstat(
- xfs_mount_t *mp,
- unsigned int cmd,
- void __user *arg)
-{
- xfs_fsop_bulkreq_t bulkreq;
- int count; /* # of records returned */
- xfs_ino_t inlast; /* last inode number */
- int done;
- int error;
-
- /* done = 1 if there are more stats to get and if bulkstat */
- /* should be called again (unused here, but used in dmapi) */
-
- if (!capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (XFS_FORCED_SHUTDOWN(mp))
- return -XFS_ERROR(EIO);
-
- if (copy_from_user(&bulkreq, arg, sizeof(xfs_fsop_bulkreq_t)))
- return -XFS_ERROR(EFAULT);
-
- if (copy_from_user(&inlast, bulkreq.lastip, sizeof(__s64)))
- return -XFS_ERROR(EFAULT);
-
- if ((count = bulkreq.icount) <= 0)
- return -XFS_ERROR(EINVAL);
-
- if (cmd == XFS_IOC_FSINUMBERS)
- error = xfs_inumbers(mp, &inlast, &count,
- bulkreq.ubuffer, xfs_inumbers_fmt);
- else if (cmd == XFS_IOC_FSBULKSTAT_SINGLE)
- error = xfs_bulkstat_single(mp, &inlast,
- bulkreq.ubuffer, &done);
- else { /* XFS_IOC_FSBULKSTAT */
- if (count == 1 && inlast != 0) {
- inlast++;
- error = xfs_bulkstat_single(mp, &inlast,
- bulkreq.ubuffer, &done);
- } else {
- error = xfs_bulkstat(mp, &inlast, &count,
- (bulkstat_one_pf)xfs_bulkstat_one, NULL,
- sizeof(xfs_bstat_t), bulkreq.ubuffer,
- BULKSTAT_FG_QUICK, &done);
- }
- }
-
- if (error)
- return -error;
-
- if (bulkreq.ocount != NULL) {
- if (copy_to_user(bulkreq.lastip, &inlast,
- sizeof(xfs_ino_t)))
- return -XFS_ERROR(EFAULT);
-
- if (copy_to_user(bulkreq.ocount, &count, sizeof(count)))
- return -XFS_ERROR(EFAULT);
- }
-
- return 0;
-}
-
-STATIC int
-xfs_ioc_fsgeometry_v1(
- xfs_mount_t *mp,
- void __user *arg)
-{
- xfs_fsop_geom_v1_t fsgeo;
- int error;
-
- error = xfs_fs_geometry(mp, (xfs_fsop_geom_t *)&fsgeo, 3);
- if (error)
- return -error;
-
- if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
- return -XFS_ERROR(EFAULT);
- return 0;
-}
-
-STATIC int
-xfs_ioc_fsgeometry(
- xfs_mount_t *mp,
- void __user *arg)
-{
- xfs_fsop_geom_t fsgeo;
- int error;
-
- error = xfs_fs_geometry(mp, &fsgeo, 4);
- if (error)
- return -error;
-
- if (copy_to_user(arg, &fsgeo, sizeof(fsgeo)))
- return -XFS_ERROR(EFAULT);
- return 0;
-}
-
-/*
- * Linux extended inode flags interface.
- */
-
-STATIC unsigned int
-xfs_merge_ioc_xflags(
- unsigned int flags,
- unsigned int start)
-{
- unsigned int xflags = start;
-
- if (flags & FS_IMMUTABLE_FL)
- xflags |= XFS_XFLAG_IMMUTABLE;
- else
- xflags &= ~XFS_XFLAG_IMMUTABLE;
- if (flags & FS_APPEND_FL)
- xflags |= XFS_XFLAG_APPEND;
- else
- xflags &= ~XFS_XFLAG_APPEND;
- if (flags & FS_SYNC_FL)
- xflags |= XFS_XFLAG_SYNC;
- else
- xflags &= ~XFS_XFLAG_SYNC;
- if (flags & FS_NOATIME_FL)
- xflags |= XFS_XFLAG_NOATIME;
- else
- xflags &= ~XFS_XFLAG_NOATIME;
- if (flags & FS_NODUMP_FL)
- xflags |= XFS_XFLAG_NODUMP;
- else
- xflags &= ~XFS_XFLAG_NODUMP;
-
- return xflags;
-}
-
-STATIC unsigned int
-xfs_di2lxflags(
- __uint16_t di_flags)
-{
- unsigned int flags = 0;
-
- if (di_flags & XFS_DIFLAG_IMMUTABLE)
- flags |= FS_IMMUTABLE_FL;
- if (di_flags & XFS_DIFLAG_APPEND)
- flags |= FS_APPEND_FL;
- if (di_flags & XFS_DIFLAG_SYNC)
- flags |= FS_SYNC_FL;
- if (di_flags & XFS_DIFLAG_NOATIME)
- flags |= FS_NOATIME_FL;
- if (di_flags & XFS_DIFLAG_NODUMP)
- flags |= FS_NODUMP_FL;
- return flags;
-}
-
-STATIC int
-xfs_ioc_xattr(
- bhv_vnode_t *vp,
- xfs_inode_t *ip,
- struct file *filp,
- unsigned int cmd,
- void __user *arg)
-{
- struct fsxattr fa;
- struct bhv_vattr *vattr;
- int error = 0;
- int attr_flags;
- unsigned int flags;
-
- vattr = kmalloc(sizeof(*vattr), GFP_KERNEL);
- if (unlikely(!vattr))
- return -ENOMEM;
-
- switch (cmd) {
- case XFS_IOC_FSGETXATTR: {
- vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \
- XFS_AT_NEXTENTS | XFS_AT_PROJID;
- error = bhv_vop_getattr(vp, vattr, 0, NULL);
- if (unlikely(error)) {
- error = -error;
- break;
- }
-
- fa.fsx_xflags = vattr->va_xflags;
- fa.fsx_extsize = vattr->va_extsize;
- fa.fsx_nextents = vattr->va_nextents;
- fa.fsx_projid = vattr->va_projid;
-
- if (copy_to_user(arg, &fa, sizeof(fa))) {
- error = -EFAULT;
- break;
- }
- break;
- }
-
- case XFS_IOC_FSSETXATTR: {
- if (copy_from_user(&fa, arg, sizeof(fa))) {
- error = -EFAULT;
- break;
- }
-
- attr_flags = 0;
- if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
- attr_flags |= ATTR_NONBLOCK;
-
- vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | XFS_AT_PROJID;
- vattr->va_xflags = fa.fsx_xflags;
- vattr->va_extsize = fa.fsx_extsize;
- vattr->va_projid = fa.fsx_projid;
-
- error = bhv_vop_setattr(vp, vattr, attr_flags, NULL);
- if (likely(!error))
- __vn_revalidate(vp, vattr); /* update flags */
- error = -error;
- break;
- }
-
- case XFS_IOC_FSGETXATTRA: {
- vattr->va_mask = XFS_AT_XFLAGS | XFS_AT_EXTSIZE | \
- XFS_AT_ANEXTENTS | XFS_AT_PROJID;
- error = bhv_vop_getattr(vp, vattr, 0, NULL);
- if (unlikely(error)) {
- error = -error;
- break;
- }
-
- fa.fsx_xflags = vattr->va_xflags;
- fa.fsx_extsize = vattr->va_extsize;
- fa.fsx_nextents = vattr->va_anextents;
- fa.fsx_projid = vattr->va_projid;
-
- if (copy_to_user(arg, &fa, sizeof(fa))) {
- error = -EFAULT;
- break;
- }
- break;
- }
-
- case XFS_IOC_GETXFLAGS: {
- flags = xfs_di2lxflags(ip->i_d.di_flags);
- if (copy_to_user(arg, &flags, sizeof(flags)))
- error = -EFAULT;
- break;
- }
-
- case XFS_IOC_SETXFLAGS: {
- if (copy_from_user(&flags, arg, sizeof(flags))) {
- error = -EFAULT;
- break;
- }
-
- if (flags & ~(FS_IMMUTABLE_FL | FS_APPEND_FL | \
- FS_NOATIME_FL | FS_NODUMP_FL | \
- FS_SYNC_FL)) {
- error = -EOPNOTSUPP;
- break;
- }
-
- attr_flags = 0;
- if (filp->f_flags & (O_NDELAY|O_NONBLOCK))
- attr_flags |= ATTR_NONBLOCK;
-
- vattr->va_mask = XFS_AT_XFLAGS;
- vattr->va_xflags = xfs_merge_ioc_xflags(flags,
- xfs_ip2xflags(ip));
-
- error = bhv_vop_setattr(vp, vattr, attr_flags, NULL);
- if (likely(!error))
- __vn_revalidate(vp, vattr); /* update flags */
- error = -error;
- break;
- }
-
- default:
- error = -ENOTTY;
- break;
- }
-
- kfree(vattr);
- return error;
-}
-
-STATIC int
-xfs_ioc_getbmap(
- bhv_desc_t *bdp,
- int ioflags,
- unsigned int cmd,
- void __user *arg)
-{
- struct getbmap bm;
- int iflags;
- int error;
-
- if (copy_from_user(&bm, arg, sizeof(bm)))
- return -XFS_ERROR(EFAULT);
-
- if (bm.bmv_count < 2)
- return -XFS_ERROR(EINVAL);
-
- iflags = (cmd == XFS_IOC_GETBMAPA ? BMV_IF_ATTRFORK : 0);
- if (ioflags & IO_INVIS)
- iflags |= BMV_IF_NO_DMAPI_READ;
-
- error = xfs_getbmap(bdp, &bm, (struct getbmap __user *)arg+1, iflags);
- if (error)
- return -error;
-
- if (copy_to_user(arg, &bm, sizeof(bm)))
- return -XFS_ERROR(EFAULT);
- return 0;
-}
-
-STATIC int
-xfs_ioc_getbmapx(
- bhv_desc_t *bdp,
- void __user *arg)
-{
- struct getbmapx bmx;
- struct getbmap bm;
- int iflags;
- int error;
-
- if (copy_from_user(&bmx, arg, sizeof(bmx)))
- return -XFS_ERROR(EFAULT);
-
- if (bmx.bmv_count < 2)
- return -XFS_ERROR(EINVAL);
-
- /*
- * Map input getbmapx structure to a getbmap
- * structure for xfs_getbmap.
- */
- GETBMAP_CONVERT(bmx, bm);
-
- iflags = bmx.bmv_iflags;
-
- if (iflags & (~BMV_IF_VALID))
- return -XFS_ERROR(EINVAL);
-
- iflags |= BMV_IF_EXTENDED;
-
- error = xfs_getbmap(bdp, &bm, (struct getbmapx __user *)arg+1, iflags);
- if (error)
- return -error;
-
- GETBMAP_CONVERT(bm, bmx);
-
- if (copy_to_user(arg, &bmx, sizeof(bmx)))
- return -XFS_ERROR(EFAULT);
-
- return 0;
-}