static inline __u64 mds_pack_open_flags(__u64 flags)
{
__u64 cr_flags = (flags & (FMODE_READ | FMODE_WRITE |
MDS_OPEN_FL_INTERNAL));
if (flags & O_CREAT)
cr_flags |= MDS_OPEN_CREAT;
if (flags & O_EXCL)
cr_flags |= MDS_OPEN_EXCL;
if (flags & O_TRUNC)
cr_flags |= MDS_OPEN_TRUNC;
if (flags & O_APPEND)
cr_flags |= MDS_OPEN_APPEND;
if (flags & O_SYNC)
cr_flags |= MDS_OPEN_SYNC;
if (flags & O_DIRECTORY)
cr_flags |= MDS_OPEN_DIRECTORY;
#ifdef FMODE_EXEC
if (flags & FMODE_EXEC)
cr_flags |= MDS_FMODE_EXEC;
#endif
if (cl_is_lov_delay_create(flags))
cr_flags |= MDS_OPEN_DELAY_CREATE;
if (flags & O_NONBLOCK)
cr_flags |= MDS_OPEN_NORESTORE;
return cr_flags;
}
static __u64 mds_pack_open_flags(__u64 flags, __u32 mode)
{
__u64 cr_flags = (flags & (FMODE_READ | FMODE_WRITE |
MDS_OPEN_HAS_EA | MDS_OPEN_HAS_OBJS |
MDS_OPEN_OWNEROVERRIDE | MDS_OPEN_LOCK |
MDS_OPEN_BY_FID | MDS_OPEN_LEASE |
MDS_OPEN_RELEASE));
if (flags & O_CREAT)
cr_flags |= MDS_OPEN_CREAT;
if (flags & O_EXCL)
cr_flags |= MDS_OPEN_EXCL;
if (flags & O_TRUNC)
cr_flags |= MDS_OPEN_TRUNC;
if (flags & O_APPEND)
cr_flags |= MDS_OPEN_APPEND;
if (flags & O_SYNC)
cr_flags |= MDS_OPEN_SYNC;
if (flags & O_DIRECTORY)
cr_flags |= MDS_OPEN_DIRECTORY;
#ifdef FMODE_EXEC
if (flags & FMODE_EXEC)
cr_flags |= MDS_FMODE_EXEC;
#endif
if (cl_is_lov_delay_create(flags))
cr_flags |= MDS_OPEN_DELAY_CREATE;
if (flags & O_NONBLOCK)
cr_flags |= MDS_OPEN_NORESTORE;
return cr_flags;
}
int llu_iop_open(struct pnode *pnode, int flags, mode_t mode)
{
struct inode *inode = pnode->p_base->pb_ino;
struct llu_inode_info *lli = llu_i2info(inode);
struct intnl_stat *st = llu_i2stat(inode);
struct ptlrpc_request *request;
struct lookup_intent *it;
int rc = 0;
ENTRY;
liblustre_wait_event(0);
/* don't do anything for '/' */
if (llu_is_root_inode(inode))
RETURN(0);
CDEBUG(D_VFSTRACE, "VFS Op:inode=%llu\n", (long long)st->st_ino);
LL_GET_INTENT(inode, it);
if (!it->d.lustre.it_disposition) {
LBUG();
}
rc = it_open_error(DISP_OPEN_OPEN, it);
if (rc)
GOTO(out_release, rc);
rc = llu_local_open(lli, it);
if (rc)
LBUG();
if (!S_ISREG(st->st_mode))
GOTO(out_release, rc = 0);
if (lli->lli_has_smd && cl_is_lov_delay_create(flags)) {
/* a bit ugly, but better than changing the open() API */
unsigned int tmp_flags = flags;
cl_lov_delay_create_clear(&tmp_flags);
flags = tmp_flags;
}
/*XXX: open_flags are overwritten and the previous ones are lost */
lli->lli_open_flags = flags & ~(O_CREAT | O_EXCL | O_TRUNC);
out_release:
request = it->d.lustre.it_data;
ptlrpc_req_finished(request);
it->it_op_release(it);
OBD_FREE(it, sizeof(*it));
/* libsysio hasn't done anything for O_TRUNC. here we
* simply simulate it as open(...); truncate(...); */
if (rc == 0 && (flags & O_TRUNC) && S_ISREG(st->st_mode)) {
struct iattr attr;
memset(&attr, 0, sizeof(attr));
attr.ia_size = 0;
attr.ia_valid |= ATTR_SIZE | ATTR_RAW;
rc = llu_setattr_raw(inode, &attr);
if (rc)
CERROR("error %d truncate in open()\n", rc);
}
liblustre_wait_event(0);
RETURN(rc);
}
