sf_dentry_revalidate(struct dentry *dentry, struct nameidata *nd)
#endif
{
TRACE();
if (sf_inode_revalidate(dentry))
return 0;
return 1;
}
int sf_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *kstat)
{
int err;
TRACE();
err = sf_inode_revalidate(dentry);
if (err)
return err;
generic_fillattr(dentry->d_inode, kstat);
return 0;
}
sf_dentry_revalidate(struct dentry *dentry, int flags)
#endif
{
TRACE();
#if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 6, 0)
if (flags & LOOKUP_RCU)
return -ECHILD;
#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)
/* see Documentation/filesystems/vfs.txt */
if (nd && nd->flags & LOOKUP_RCU)
return -ECHILD;
#endif
if (sf_inode_revalidate(dentry))
return 0;
return 1;
}
int sf_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct sf_glob_info *sf_g;
struct sf_inode_info *sf_i;
SHFLCREATEPARMS params;
SHFLFSOBJINFO info;
uint32_t cbBuffer;
int rc, err;
TRACE();
sf_g = GET_GLOB_INFO(dentry->d_inode->i_sb);
sf_i = GET_INODE_INFO(dentry->d_inode);
err = 0;
RT_ZERO(params);
params.Handle = SHFL_HANDLE_NIL;
params.CreateFlags = SHFL_CF_ACT_OPEN_IF_EXISTS
| SHFL_CF_ACT_FAIL_IF_NEW
| SHFL_CF_ACCESS_ATTR_WRITE;
/* this is at least required for Posix hosts */
if (iattr->ia_valid & ATTR_SIZE)
params.CreateFlags |= SHFL_CF_ACCESS_WRITE;
rc = VbglR0SfCreate(&client_handle, &sf_g->map, sf_i->path, ¶ms);
if (RT_FAILURE(rc))
{
LogFunc(("VbglR0SfCreate(%s) failed rc=%Rrc\n",
sf_i->path->String.utf8, rc));
err = -RTErrConvertToErrno(rc);
goto fail2;
}
if (params.Result != SHFL_FILE_EXISTS)
{
LogFunc(("file %s does not exist\n", sf_i->path->String.utf8));
err = -ENOENT;
goto fail1;
}
/* Setting the file size and setting the other attributes has to be
* handled separately, see implementation of vbsfSetFSInfo() in
* vbsf.cpp */
if (iattr->ia_valid & (ATTR_MODE | ATTR_ATIME | ATTR_MTIME))
{
#define mode_set(r) ((iattr->ia_mode & (S_##r)) ? RTFS_UNIX_##r : 0)
RT_ZERO(info);
if (iattr->ia_valid & ATTR_MODE)
{
info.Attr.fMode = mode_set(ISUID);
info.Attr.fMode |= mode_set(ISGID);
info.Attr.fMode |= mode_set(IRUSR);
info.Attr.fMode |= mode_set(IWUSR);
info.Attr.fMode |= mode_set(IXUSR);
info.Attr.fMode |= mode_set(IRGRP);
info.Attr.fMode |= mode_set(IWGRP);
info.Attr.fMode |= mode_set(IXGRP);
info.Attr.fMode |= mode_set(IROTH);
info.Attr.fMode |= mode_set(IWOTH);
info.Attr.fMode |= mode_set(IXOTH);
if (iattr->ia_mode & S_IFDIR)
info.Attr.fMode |= RTFS_TYPE_DIRECTORY;
else
info.Attr.fMode |= RTFS_TYPE_FILE;
}
if (iattr->ia_valid & ATTR_ATIME)
sf_timespec_from_ftime(&info.AccessTime, &iattr->ia_atime);
if (iattr->ia_valid & ATTR_MTIME)
sf_timespec_from_ftime(&info.ModificationTime, &iattr->ia_mtime);
/* ignore ctime (inode change time) as it can't be set from userland anyway */
cbBuffer = sizeof(info);
rc = VbglR0SfFsInfo(&client_handle, &sf_g->map, params.Handle,
SHFL_INFO_SET | SHFL_INFO_FILE, &cbBuffer,
(PSHFLDIRINFO)&info);
if (RT_FAILURE(rc))
{
LogFunc(("VbglR0SfFsInfo(%s, FILE) failed rc=%Rrc\n",
sf_i->path->String.utf8, rc));
err = -RTErrConvertToErrno(rc);
goto fail1;
}
}
if (iattr->ia_valid & ATTR_SIZE)
{
RT_ZERO(info);
info.cbObject = iattr->ia_size;
cbBuffer = sizeof(info);
rc = VbglR0SfFsInfo(&client_handle, &sf_g->map, params.Handle,
SHFL_INFO_SET | SHFL_INFO_SIZE, &cbBuffer,
(PSHFLDIRINFO)&info);
if (RT_FAILURE(rc))
{
LogFunc(("VbglR0SfFsInfo(%s, SIZE) failed rc=%Rrc\n",
sf_i->path->String.utf8, rc));
err = -RTErrConvertToErrno(rc);
goto fail1;
}
}
rc = VbglR0SfClose(&client_handle, &sf_g->map, params.Handle);
if (RT_FAILURE(rc))
LogFunc(("VbglR0SfClose(%s) failed rc=%Rrc\n", sf_i->path->String.utf8, rc));
return sf_inode_revalidate(dentry);
fail1:
rc = VbglR0SfClose(&client_handle, &sf_g->map, params.Handle);
if (RT_FAILURE(rc))
LogFunc(("VbglR0SfClose(%s) failed rc=%Rrc\n", sf_i->path->String.utf8, rc));
fail2:
return err;
}
