mirror of
https://github.com/torvalds/linux.git
synced 2025-11-04 10:40:15 +02:00
cb12fae1c3
nfserrno() is common to all nfs versions, but nfsproc.c is specifically for NFSv2. Move it to vfs.c, and the prototype to vfs.h. While we're in here, remove the #ifdef EDQUOT check in this function. It's apparently a holdover from the initial merge of the nfsd code in 1997. No other place in the kernel checks that that symbol is defined before using it, so I think we can dispense with it here. Signed-off-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2016 Tom Haynes <loghyr@primarydata.com>
|
|
*
|
|
* The following implements a super-simple flex-file server
|
|
* where the NFSv4.1 mds is also the ds. And the storage is
|
|
* the same. I.e., writing to the mds via a NFSv4.1 WRITE
|
|
* goes to the same location as the NFSv3 WRITE.
|
|
*/
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/nfsd/debug.h>
|
|
|
|
#include <linux/sunrpc/addr.h>
|
|
|
|
#include "flexfilelayoutxdr.h"
|
|
#include "pnfs.h"
|
|
#include "vfs.h"
|
|
|
|
#define NFSDDBG_FACILITY NFSDDBG_PNFS
|
|
|
|
static __be32
|
|
nfsd4_ff_proc_layoutget(struct inode *inode, const struct svc_fh *fhp,
|
|
struct nfsd4_layoutget *args)
|
|
{
|
|
struct nfsd4_layout_seg *seg = &args->lg_seg;
|
|
u32 device_generation = 0;
|
|
int error;
|
|
uid_t u;
|
|
|
|
struct pnfs_ff_layout *fl;
|
|
|
|
/*
|
|
* The super simple flex file server has 1 mirror, 1 data server,
|
|
* and 1 file handle. So instead of 4 allocs, do 1 for now.
|
|
* Zero it out for the stateid - don't want junk in there!
|
|
*/
|
|
error = -ENOMEM;
|
|
fl = kzalloc(sizeof(*fl), GFP_KERNEL);
|
|
if (!fl)
|
|
goto out_error;
|
|
args->lg_content = fl;
|
|
|
|
/*
|
|
* Avoid layout commit, try to force the I/O to the DS,
|
|
* and for fun, cause all IOMODE_RW layout segments to
|
|
* effectively be WRITE only.
|
|
*/
|
|
fl->flags = FF_FLAGS_NO_LAYOUTCOMMIT | FF_FLAGS_NO_IO_THRU_MDS |
|
|
FF_FLAGS_NO_READ_IO;
|
|
|
|
/* Do not allow a IOMODE_READ segment to have write pemissions */
|
|
if (seg->iomode == IOMODE_READ) {
|
|
u = from_kuid(&init_user_ns, inode->i_uid) + 1;
|
|
fl->uid = make_kuid(&init_user_ns, u);
|
|
} else
|
|
fl->uid = inode->i_uid;
|
|
fl->gid = inode->i_gid;
|
|
|
|
error = nfsd4_set_deviceid(&fl->deviceid, fhp, device_generation);
|
|
if (error)
|
|
goto out_error;
|
|
|
|
fl->fh.size = fhp->fh_handle.fh_size;
|
|
memcpy(fl->fh.data, &fhp->fh_handle.fh_raw, fl->fh.size);
|
|
|
|
/* Give whole file layout segments */
|
|
seg->offset = 0;
|
|
seg->length = NFS4_MAX_UINT64;
|
|
|
|
dprintk("GET: 0x%llx:0x%llx %d\n", seg->offset, seg->length,
|
|
seg->iomode);
|
|
return 0;
|
|
|
|
out_error:
|
|
seg->length = 0;
|
|
return nfserrno(error);
|
|
}
|
|
|
|
static __be32
|
|
nfsd4_ff_proc_getdeviceinfo(struct super_block *sb, struct svc_rqst *rqstp,
|
|
struct nfs4_client *clp, struct nfsd4_getdeviceinfo *gdp)
|
|
{
|
|
struct pnfs_ff_device_addr *da;
|
|
|
|
u16 port;
|
|
char addr[INET6_ADDRSTRLEN];
|
|
|
|
da = kzalloc(sizeof(struct pnfs_ff_device_addr), GFP_KERNEL);
|
|
if (!da)
|
|
return nfserrno(-ENOMEM);
|
|
|
|
gdp->gd_device = da;
|
|
|
|
da->version = 3;
|
|
da->minor_version = 0;
|
|
|
|
da->rsize = svc_max_payload(rqstp);
|
|
da->wsize = da->rsize;
|
|
|
|
rpc_ntop((struct sockaddr *)&rqstp->rq_daddr,
|
|
addr, INET6_ADDRSTRLEN);
|
|
if (rqstp->rq_daddr.ss_family == AF_INET) {
|
|
struct sockaddr_in *sin;
|
|
|
|
sin = (struct sockaddr_in *)&rqstp->rq_daddr;
|
|
port = ntohs(sin->sin_port);
|
|
snprintf(da->netaddr.netid, FF_NETID_LEN + 1, "tcp");
|
|
da->netaddr.netid_len = 3;
|
|
} else {
|
|
struct sockaddr_in6 *sin6;
|
|
|
|
sin6 = (struct sockaddr_in6 *)&rqstp->rq_daddr;
|
|
port = ntohs(sin6->sin6_port);
|
|
snprintf(da->netaddr.netid, FF_NETID_LEN + 1, "tcp6");
|
|
da->netaddr.netid_len = 4;
|
|
}
|
|
|
|
da->netaddr.addr_len =
|
|
snprintf(da->netaddr.addr, FF_ADDR_LEN + 1,
|
|
"%s.%d.%d", addr, port >> 8, port & 0xff);
|
|
|
|
da->tightly_coupled = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
const struct nfsd4_layout_ops ff_layout_ops = {
|
|
.notify_types =
|
|
NOTIFY_DEVICEID4_DELETE | NOTIFY_DEVICEID4_CHANGE,
|
|
.disable_recalls = true,
|
|
.proc_getdeviceinfo = nfsd4_ff_proc_getdeviceinfo,
|
|
.encode_getdeviceinfo = nfsd4_ff_encode_getdeviceinfo,
|
|
.proc_layoutget = nfsd4_ff_proc_layoutget,
|
|
.encode_layoutget = nfsd4_ff_encode_layoutget,
|
|
};
|