2185 lines
54 KiB
C
2185 lines
54 KiB
C
/* YFS File Server client stubs
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*
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* Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public Licence
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* as published by the Free Software Foundation; either version
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* 2 of the Licence, or (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/sched.h>
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#include <linux/circ_buf.h>
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#include <linux/iversion.h>
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#include "internal.h"
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#include "afs_fs.h"
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#include "xdr_fs.h"
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#include "protocol_yfs.h"
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static const struct afs_fid afs_zero_fid;
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static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
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{
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call->cbi = afs_get_cb_interest(cbi);
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}
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#define xdr_size(x) (sizeof(*x) / sizeof(__be32))
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static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
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{
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const struct yfs_xdr_YFSFid *x = (const void *)*_bp;
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fid->vid = xdr_to_u64(x->volume);
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fid->vnode = xdr_to_u64(x->vnode.lo);
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fid->vnode_hi = ntohl(x->vnode.hi);
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fid->unique = ntohl(x->vnode.unique);
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*_bp += xdr_size(x);
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}
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static __be32 *xdr_encode_u32(__be32 *bp, u32 n)
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{
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*bp++ = htonl(n);
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return bp;
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}
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static __be32 *xdr_encode_u64(__be32 *bp, u64 n)
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{
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struct yfs_xdr_u64 *x = (void *)bp;
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*x = u64_to_xdr(n);
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return bp + xdr_size(x);
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}
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static __be32 *xdr_encode_YFSFid(__be32 *bp, struct afs_fid *fid)
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{
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struct yfs_xdr_YFSFid *x = (void *)bp;
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x->volume = u64_to_xdr(fid->vid);
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x->vnode.lo = u64_to_xdr(fid->vnode);
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x->vnode.hi = htonl(fid->vnode_hi);
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x->vnode.unique = htonl(fid->unique);
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return bp + xdr_size(x);
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}
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static size_t xdr_strlen(unsigned int len)
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{
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return sizeof(__be32) + round_up(len, sizeof(__be32));
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}
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static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
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{
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bp = xdr_encode_u32(bp, len);
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bp = memcpy(bp, p, len);
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if (len & 3) {
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unsigned int pad = 4 - (len & 3);
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memset((u8 *)bp + len, 0, pad);
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len += pad;
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}
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return bp + len / sizeof(__be32);
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}
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static s64 linux_to_yfs_time(const struct timespec64 *t)
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{
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/* Convert to 100ns intervals. */
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return (u64)t->tv_sec * 10000000 + t->tv_nsec/100;
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}
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static __be32 *xdr_encode_YFSStoreStatus_mode(__be32 *bp, mode_t mode)
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{
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
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x->mask = htonl(AFS_SET_MODE);
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x->mode = htonl(mode & S_IALLUGO);
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x->mtime_client = u64_to_xdr(0);
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x->owner = u64_to_xdr(0);
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x->group = u64_to_xdr(0);
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return bp + xdr_size(x);
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}
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static __be32 *xdr_encode_YFSStoreStatus_mtime(__be32 *bp, const struct timespec64 *t)
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{
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
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s64 mtime = linux_to_yfs_time(t);
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x->mask = htonl(AFS_SET_MTIME);
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x->mode = htonl(0);
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x->mtime_client = u64_to_xdr(mtime);
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x->owner = u64_to_xdr(0);
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x->group = u64_to_xdr(0);
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return bp + xdr_size(x);
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}
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/*
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* Convert a signed 100ns-resolution 64-bit time into a timespec.
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*/
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static struct timespec64 yfs_time_to_linux(s64 t)
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{
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struct timespec64 ts;
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u64 abs_t;
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/*
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* Unfortunately can not use normal 64 bit division on 32 bit arch, but
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* the alternative, do_div, does not work with negative numbers so have
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* to special case them
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*/
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if (t < 0) {
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abs_t = -t;
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ts.tv_nsec = (time64_t)(do_div(abs_t, 10000000) * 100);
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ts.tv_nsec = -ts.tv_nsec;
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ts.tv_sec = -abs_t;
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} else {
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abs_t = t;
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ts.tv_nsec = (time64_t)do_div(abs_t, 10000000) * 100;
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ts.tv_sec = abs_t;
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}
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return ts;
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}
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static struct timespec64 xdr_to_time(const struct yfs_xdr_u64 xdr)
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{
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s64 t = xdr_to_u64(xdr);
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return yfs_time_to_linux(t);
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}
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static void yfs_check_req(struct afs_call *call, __be32 *bp)
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{
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size_t len = (void *)bp - call->request;
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if (len > call->request_size)
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pr_err("kAFS: %s: Request buffer overflow (%zu>%u)\n",
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call->type->name, len, call->request_size);
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else if (len < call->request_size)
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pr_warning("kAFS: %s: Request buffer underflow (%zu<%u)\n",
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call->type->name, len, call->request_size);
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}
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/*
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* Dump a bad file status record.
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*/
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static void xdr_dump_bad(const __be32 *bp)
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{
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__be32 x[4];
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int i;
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pr_notice("YFS XDR: Bad status record\n");
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for (i = 0; i < 5 * 4 * 4; i += 16) {
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memcpy(x, bp, 16);
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bp += 4;
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pr_notice("%03x: %08x %08x %08x %08x\n",
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i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
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}
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memcpy(x, bp, 4);
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pr_notice("0x50: %08x\n", ntohl(x[0]));
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}
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/*
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* Decode a YFSFetchStatus block
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*/
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static int xdr_decode_YFSFetchStatus(struct afs_call *call,
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const __be32 **_bp,
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struct afs_file_status *status,
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struct afs_vnode *vnode,
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const afs_dataversion_t *expected_version,
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struct afs_read *read_req)
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{
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const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
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u32 type;
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u8 flags = 0;
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status->abort_code = ntohl(xdr->abort_code);
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if (status->abort_code != 0) {
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if (vnode && status->abort_code == VNOVNODE) {
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set_bit(AFS_VNODE_DELETED, &vnode->flags);
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status->nlink = 0;
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__afs_break_callback(vnode);
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}
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return 0;
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}
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type = ntohl(xdr->type);
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switch (type) {
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case AFS_FTYPE_FILE:
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case AFS_FTYPE_DIR:
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case AFS_FTYPE_SYMLINK:
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if (type != status->type &&
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vnode &&
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!test_bit(AFS_VNODE_UNSET, &vnode->flags)) {
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pr_warning("Vnode %llx:%llx:%x changed type %u to %u\n",
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vnode->fid.vid,
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vnode->fid.vnode,
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vnode->fid.unique,
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status->type, type);
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goto bad;
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}
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status->type = type;
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break;
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default:
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goto bad;
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}
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#define EXTRACT_M4(FIELD) \
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do { \
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u32 x = ntohl(xdr->FIELD); \
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if (status->FIELD != x) { \
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flags |= AFS_VNODE_META_CHANGED; \
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status->FIELD = x; \
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} \
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} while (0)
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#define EXTRACT_M8(FIELD) \
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do { \
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u64 x = xdr_to_u64(xdr->FIELD); \
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if (status->FIELD != x) { \
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flags |= AFS_VNODE_META_CHANGED; \
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status->FIELD = x; \
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} \
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} while (0)
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#define EXTRACT_D8(FIELD) \
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do { \
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u64 x = xdr_to_u64(xdr->FIELD); \
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if (status->FIELD != x) { \
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flags |= AFS_VNODE_DATA_CHANGED; \
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status->FIELD = x; \
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} \
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} while (0)
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EXTRACT_M4(nlink);
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EXTRACT_D8(size);
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EXTRACT_D8(data_version);
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EXTRACT_M8(author);
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EXTRACT_M8(owner);
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EXTRACT_M8(group);
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EXTRACT_M4(mode);
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EXTRACT_M4(caller_access); /* call ticket dependent */
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EXTRACT_M4(anon_access);
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status->mtime_client = xdr_to_time(xdr->mtime_client);
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status->mtime_server = xdr_to_time(xdr->mtime_server);
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status->lock_count = ntohl(xdr->lock_count);
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if (read_req) {
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read_req->data_version = status->data_version;
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read_req->file_size = status->size;
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}
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*_bp += xdr_size(xdr);
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if (vnode) {
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if (test_bit(AFS_VNODE_UNSET, &vnode->flags))
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flags |= AFS_VNODE_NOT_YET_SET;
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afs_update_inode_from_status(vnode, status, expected_version,
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flags);
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}
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return 0;
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bad:
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xdr_dump_bad(*_bp);
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return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
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}
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/*
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* Decode the file status. We need to lock the target vnode if we're going to
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* update its status so that stat() sees the attributes update atomically.
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*/
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static int yfs_decode_status(struct afs_call *call,
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const __be32 **_bp,
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struct afs_file_status *status,
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struct afs_vnode *vnode,
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const afs_dataversion_t *expected_version,
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struct afs_read *read_req)
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{
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int ret;
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if (!vnode)
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return xdr_decode_YFSFetchStatus(call, _bp, status, vnode,
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expected_version, read_req);
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write_seqlock(&vnode->cb_lock);
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ret = xdr_decode_YFSFetchStatus(call, _bp, status, vnode,
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expected_version, read_req);
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write_sequnlock(&vnode->cb_lock);
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return ret;
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}
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/*
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* Decode a YFSCallBack block
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*/
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static void xdr_decode_YFSCallBack(struct afs_call *call,
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struct afs_vnode *vnode,
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const __be32 **_bp)
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{
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struct yfs_xdr_YFSCallBack *xdr = (void *)*_bp;
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struct afs_cb_interest *old, *cbi = call->cbi;
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u64 cb_expiry;
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write_seqlock(&vnode->cb_lock);
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if (!afs_cb_is_broken(call->cb_break, vnode, cbi)) {
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cb_expiry = xdr_to_u64(xdr->expiration_time);
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do_div(cb_expiry, 10 * 1000 * 1000);
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vnode->cb_version = ntohl(xdr->version);
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vnode->cb_type = ntohl(xdr->type);
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vnode->cb_expires_at = cb_expiry + ktime_get_real_seconds();
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old = vnode->cb_interest;
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if (old != call->cbi) {
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vnode->cb_interest = cbi;
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cbi = old;
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}
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set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
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}
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write_sequnlock(&vnode->cb_lock);
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call->cbi = cbi;
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*_bp += xdr_size(xdr);
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}
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static void xdr_decode_YFSCallBack_raw(const __be32 **_bp,
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struct afs_callback *cb)
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{
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struct yfs_xdr_YFSCallBack *x = (void *)*_bp;
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u64 cb_expiry;
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cb_expiry = xdr_to_u64(x->expiration_time);
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do_div(cb_expiry, 10 * 1000 * 1000);
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cb->version = ntohl(x->version);
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cb->type = ntohl(x->type);
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cb->expires_at = cb_expiry + ktime_get_real_seconds();
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*_bp += xdr_size(x);
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}
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/*
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* Decode a YFSVolSync block
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*/
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static void xdr_decode_YFSVolSync(const __be32 **_bp,
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struct afs_volsync *volsync)
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{
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struct yfs_xdr_YFSVolSync *x = (void *)*_bp;
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u64 creation;
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if (volsync) {
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creation = xdr_to_u64(x->vol_creation_date);
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do_div(creation, 10 * 1000 * 1000);
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volsync->creation = creation;
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}
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*_bp += xdr_size(x);
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}
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/*
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* Encode the requested attributes into a YFSStoreStatus block
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*/
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static __be32 *xdr_encode_YFS_StoreStatus(__be32 *bp, struct iattr *attr)
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{
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp;
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s64 mtime = 0, owner = 0, group = 0;
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u32 mask = 0, mode = 0;
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mask = 0;
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if (attr->ia_valid & ATTR_MTIME) {
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mask |= AFS_SET_MTIME;
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mtime = linux_to_yfs_time(&attr->ia_mtime);
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}
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if (attr->ia_valid & ATTR_UID) {
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mask |= AFS_SET_OWNER;
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owner = from_kuid(&init_user_ns, attr->ia_uid);
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}
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if (attr->ia_valid & ATTR_GID) {
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mask |= AFS_SET_GROUP;
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group = from_kgid(&init_user_ns, attr->ia_gid);
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}
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if (attr->ia_valid & ATTR_MODE) {
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mask |= AFS_SET_MODE;
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mode = attr->ia_mode & S_IALLUGO;
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}
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x->mask = htonl(mask);
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x->mode = htonl(mode);
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x->mtime_client = u64_to_xdr(mtime);
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x->owner = u64_to_xdr(owner);
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x->group = u64_to_xdr(group);
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return bp + xdr_size(x);
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}
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/*
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* Decode a YFSFetchVolumeStatus block.
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*/
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static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
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struct afs_volume_status *vs)
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{
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const struct yfs_xdr_YFSFetchVolumeStatus *x = (const void *)*_bp;
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u32 flags;
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vs->vid = xdr_to_u64(x->vid);
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vs->parent_id = xdr_to_u64(x->parent_id);
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flags = ntohl(x->flags);
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vs->online = flags & yfs_FVSOnline;
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vs->in_service = flags & yfs_FVSInservice;
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vs->blessed = flags & yfs_FVSBlessed;
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vs->needs_salvage = flags & yfs_FVSNeedsSalvage;
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vs->type = ntohl(x->type);
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vs->min_quota = 0;
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vs->max_quota = xdr_to_u64(x->max_quota);
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vs->blocks_in_use = xdr_to_u64(x->blocks_in_use);
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vs->part_blocks_avail = xdr_to_u64(x->part_blocks_avail);
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vs->part_max_blocks = xdr_to_u64(x->part_max_blocks);
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vs->vol_copy_date = xdr_to_u64(x->vol_copy_date);
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vs->vol_backup_date = xdr_to_u64(x->vol_backup_date);
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*_bp += sizeof(*x) / sizeof(__be32);
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}
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/*
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* deliver reply data to an FS.FetchStatus
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*/
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static int yfs_deliver_fs_fetch_status_vnode(struct afs_call *call)
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{
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struct afs_vnode *vnode = call->reply[0];
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const __be32 *bp;
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int ret;
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ret = afs_transfer_reply(call);
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if (ret < 0)
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return ret;
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_enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode);
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/* unmarshall the reply once we've received all of it */
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bp = call->buffer;
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ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
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&call->expected_version, NULL);
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if (ret < 0)
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return ret;
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xdr_decode_YFSCallBack(call, vnode, &bp);
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xdr_decode_YFSVolSync(&bp, call->reply[1]);
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_leave(" = 0 [done]");
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return 0;
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}
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/*
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* YFS.FetchStatus operation type
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*/
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static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = {
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.name = "YFS.FetchStatus(vnode)",
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.op = yfs_FS_FetchStatus,
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.deliver = yfs_deliver_fs_fetch_status_vnode,
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.destructor = afs_flat_call_destructor,
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};
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|
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/*
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* Fetch the status information for a file.
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*/
|
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int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsync,
|
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bool new_inode)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%llx:%llu},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call) {
|
|
fc->ac.error = -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = volsync;
|
|
call->expected_version = new_inode ? 1 : vnode->status.data_version;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
yfs_check_req(call, bp);
|
|
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an YFS.FetchData64.
|
|
*/
|
|
static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
struct afs_read *req = call->reply[2];
|
|
const __be32 *bp;
|
|
unsigned int size;
|
|
int ret;
|
|
|
|
_enter("{%u,%zu/%llu}",
|
|
call->unmarshall, iov_iter_count(&call->iter), req->actual_len);
|
|
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
req->actual_len = 0;
|
|
req->index = 0;
|
|
req->offset = req->pos & (PAGE_SIZE - 1);
|
|
afs_extract_to_tmp64(call);
|
|
call->unmarshall++;
|
|
|
|
/* extract the returned data length */
|
|
case 1:
|
|
_debug("extract data length");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
req->actual_len = be64_to_cpu(call->tmp64);
|
|
_debug("DATA length: %llu", req->actual_len);
|
|
req->remain = min(req->len, req->actual_len);
|
|
if (req->remain == 0)
|
|
goto no_more_data;
|
|
|
|
call->unmarshall++;
|
|
|
|
begin_page:
|
|
ASSERTCMP(req->index, <, req->nr_pages);
|
|
if (req->remain > PAGE_SIZE - req->offset)
|
|
size = PAGE_SIZE - req->offset;
|
|
else
|
|
size = req->remain;
|
|
call->bvec[0].bv_len = size;
|
|
call->bvec[0].bv_offset = req->offset;
|
|
call->bvec[0].bv_page = req->pages[req->index];
|
|
iov_iter_bvec(&call->iter, READ, call->bvec, 1, size);
|
|
ASSERTCMP(size, <=, PAGE_SIZE);
|
|
|
|
/* extract the returned data */
|
|
case 2:
|
|
_debug("extract data %zu/%llu",
|
|
iov_iter_count(&call->iter), req->remain);
|
|
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
req->remain -= call->bvec[0].bv_len;
|
|
req->offset += call->bvec[0].bv_len;
|
|
ASSERTCMP(req->offset, <=, PAGE_SIZE);
|
|
if (req->offset == PAGE_SIZE) {
|
|
req->offset = 0;
|
|
if (req->page_done)
|
|
req->page_done(call, req);
|
|
req->index++;
|
|
if (req->remain > 0)
|
|
goto begin_page;
|
|
}
|
|
|
|
ASSERTCMP(req->remain, ==, 0);
|
|
if (req->actual_len <= req->len)
|
|
goto no_more_data;
|
|
|
|
/* Discard any excess data the server gave us */
|
|
iov_iter_discard(&call->iter, READ, req->actual_len - req->len);
|
|
call->unmarshall = 3;
|
|
case 3:
|
|
_debug("extract discard %zu/%llu",
|
|
iov_iter_count(&call->iter), req->actual_len - req->len);
|
|
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
no_more_data:
|
|
call->unmarshall = 4;
|
|
afs_extract_to_buf(call,
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
|
|
/* extract the metadata */
|
|
case 4:
|
|
ret = afs_extract_data(call, false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&vnode->status.data_version, req);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSCallBack(call, vnode, &bp);
|
|
xdr_decode_YFSVolSync(&bp, call->reply[1]);
|
|
|
|
call->unmarshall++;
|
|
|
|
case 5:
|
|
break;
|
|
}
|
|
|
|
for (; req->index < req->nr_pages; req->index++) {
|
|
if (req->offset < PAGE_SIZE)
|
|
zero_user_segment(req->pages[req->index],
|
|
req->offset, PAGE_SIZE);
|
|
if (req->page_done)
|
|
req->page_done(call, req);
|
|
req->offset = 0;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
static void yfs_fetch_data_destructor(struct afs_call *call)
|
|
{
|
|
struct afs_read *req = call->reply[2];
|
|
|
|
afs_put_read(req);
|
|
afs_flat_call_destructor(call);
|
|
}
|
|
|
|
/*
|
|
* YFS.FetchData64 operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSFetchData64 = {
|
|
.name = "YFS.FetchData64",
|
|
.op = yfs_FS_FetchData64,
|
|
.deliver = yfs_deliver_fs_fetch_data64,
|
|
.destructor = yfs_fetch_data_destructor,
|
|
};
|
|
|
|
/*
|
|
* Fetch data from a file.
|
|
*/
|
|
int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%llx:%llu},%llx,%llx",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode,
|
|
req->pos, req->len);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_u64) * 2,
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = NULL; /* volsync */
|
|
call->reply[2] = req;
|
|
call->expected_version = vnode->status.data_version;
|
|
call->want_reply_time = true;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSFETCHDATA64);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_u64(bp, req->pos);
|
|
bp = xdr_encode_u64(bp, req->len);
|
|
yfs_check_req(call, bp);
|
|
|
|
refcount_inc(&req->usage);
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data for YFS.CreateFile or YFS.MakeDir.
|
|
*/
|
|
static int yfs_deliver_fs_create_vnode(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_YFSFid(&bp, call->reply[1]);
|
|
ret = yfs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSCallBack_raw(&bp, call->reply[3]);
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.CreateFile and FS.MakeDir operation type
|
|
*/
|
|
static const struct afs_call_type afs_RXFSCreateFile = {
|
|
.name = "YFS.CreateFile",
|
|
.op = yfs_FS_CreateFile,
|
|
.deliver = yfs_deliver_fs_create_vnode,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Create a file.
|
|
*/
|
|
int yfs_fs_create_file(struct afs_fs_cursor *fc,
|
|
const char *name,
|
|
umode_t mode,
|
|
u64 current_data_version,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus,
|
|
struct afs_callback *newcb)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz, reqsz, rplsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
reqsz = (sizeof(__be32) +
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(namesz) +
|
|
sizeof(struct yfs_xdr_YFSStoreStatus) +
|
|
sizeof(__be32));
|
|
rplsz = (sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
|
|
call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = newfid;
|
|
call->reply[2] = newstatus;
|
|
call->reply[3] = newcb;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSCREATEFILE);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_string(bp, name, namesz);
|
|
bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
|
|
bp = xdr_encode_u32(bp, 0); /* ViceLockType */
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
static const struct afs_call_type yfs_RXFSMakeDir = {
|
|
.name = "YFS.MakeDir",
|
|
.op = yfs_FS_MakeDir,
|
|
.deliver = yfs_deliver_fs_create_vnode,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Make a directory.
|
|
*/
|
|
int yfs_fs_make_dir(struct afs_fs_cursor *fc,
|
|
const char *name,
|
|
umode_t mode,
|
|
u64 current_data_version,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus,
|
|
struct afs_callback *newcb)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz, reqsz, rplsz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
reqsz = (sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_RPCFlags) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(namesz) +
|
|
sizeof(struct yfs_xdr_YFSStoreStatus));
|
|
rplsz = (sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz);
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = newfid;
|
|
call->reply[2] = newstatus;
|
|
call->reply[3] = newcb;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSMAKEDIR);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_string(bp, name, namesz);
|
|
bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.RemoveFile2 operation.
|
|
*/
|
|
static int yfs_deliver_fs_remove_file2(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *dvnode = call->reply[0];
|
|
struct afs_vnode *vnode = call->reply[1];
|
|
struct afs_fid fid;
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &dvnode->status, dvnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
xdr_decode_YFSFid(&bp, &fid);
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
/* Was deleted if vnode->status.abort_code == VNOVNODE. */
|
|
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.RemoveFile2 operation type.
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
|
|
.name = "YFS.RemoveFile2",
|
|
.op = yfs_FS_RemoveFile2,
|
|
.deliver = yfs_deliver_fs_remove_file2,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Remove a file and retrieve new file status.
|
|
*/
|
|
int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
|
|
const char *name, u64 current_data_version)
|
|
{
|
|
struct afs_vnode *dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(dvnode);
|
|
size_t namesz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2,
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_RPCFlags) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(namesz),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = dvnode;
|
|
call->reply[1] = vnode;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &dvnode->fid);
|
|
bp = xdr_encode_string(bp, name, namesz);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &dvnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation.
|
|
*/
|
|
static int yfs_deliver_fs_remove(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *dvnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &dvnode->status, dvnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.RemoveDir and FS.RemoveFile operation types.
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSRemoveFile = {
|
|
.name = "YFS.RemoveFile",
|
|
.op = yfs_FS_RemoveFile,
|
|
.deliver = yfs_deliver_fs_remove,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type yfs_RXYFSRemoveDir = {
|
|
.name = "YFS.RemoveDir",
|
|
.op = yfs_FS_RemoveDir,
|
|
.deliver = yfs_deliver_fs_remove,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* remove a file or directory
|
|
*/
|
|
int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
|
|
const char *name, bool isdir, u64 current_data_version)
|
|
{
|
|
struct afs_vnode *dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(dvnode);
|
|
size_t namesz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
call = afs_alloc_flat_call(
|
|
net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile,
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_RPCFlags) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(namesz),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = dvnode;
|
|
call->reply[1] = vnode;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &dvnode->fid);
|
|
bp = xdr_encode_string(bp, name, namesz);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &dvnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.Link operation.
|
|
*/
|
|
static int yfs_deliver_fs_link(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *dvnode = call->reply[0], *vnode = call->reply[1];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode, NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = yfs_decode_status(call, &bp, &dvnode->status, dvnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.Link operation type.
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSLink = {
|
|
.name = "YFS.Link",
|
|
.op = yfs_FS_Link,
|
|
.deliver = yfs_deliver_fs_link,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Make a hard link.
|
|
*/
|
|
int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
|
|
const char *name, u64 current_data_version)
|
|
{
|
|
struct afs_vnode *dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
size_t namesz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSLink,
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_RPCFlags) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(namesz) +
|
|
sizeof(struct yfs_xdr_YFSFid),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = dvnode;
|
|
call->reply[1] = vnode;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSLINK);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &dvnode->fid);
|
|
bp = xdr_encode_string(bp, name, namesz);
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.Symlink operation.
|
|
*/
|
|
static int yfs_deliver_fs_symlink(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
xdr_decode_YFSFid(&bp, call->reply[1]);
|
|
ret = yfs_decode_status(call, &bp, call->reply[2], NULL, NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.Symlink operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSSymlink = {
|
|
.name = "YFS.Symlink",
|
|
.op = yfs_FS_Symlink,
|
|
.deliver = yfs_deliver_fs_symlink,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Create a symbolic link.
|
|
*/
|
|
int yfs_fs_symlink(struct afs_fs_cursor *fc,
|
|
const char *name,
|
|
const char *contents,
|
|
u64 current_data_version,
|
|
struct afs_fid *newfid,
|
|
struct afs_file_status *newstatus)
|
|
{
|
|
struct afs_vnode *dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(dvnode);
|
|
size_t namesz, contents_sz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
namesz = strlen(name);
|
|
contents_sz = strlen(contents);
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink,
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_RPCFlags) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(namesz) +
|
|
xdr_strlen(contents_sz) +
|
|
sizeof(struct yfs_xdr_YFSStoreStatus),
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = dvnode;
|
|
call->reply[1] = newfid;
|
|
call->reply[2] = newstatus;
|
|
call->expected_version = current_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSSYMLINK);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &dvnode->fid);
|
|
bp = xdr_encode_string(bp, name, namesz);
|
|
bp = xdr_encode_string(bp, contents, contents_sz);
|
|
bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &dvnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.Rename operation.
|
|
*/
|
|
static int yfs_deliver_fs_rename(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *orig_dvnode = call->reply[0];
|
|
struct afs_vnode *new_dvnode = call->reply[1];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &orig_dvnode->status, orig_dvnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
if (new_dvnode != orig_dvnode) {
|
|
ret = yfs_decode_status(call, &bp, &new_dvnode->status, new_dvnode,
|
|
&call->expected_version_2, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.Rename operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSRename = {
|
|
.name = "FS.Rename",
|
|
.op = yfs_FS_Rename,
|
|
.deliver = yfs_deliver_fs_rename,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Rename a file or directory.
|
|
*/
|
|
int yfs_fs_rename(struct afs_fs_cursor *fc,
|
|
const char *orig_name,
|
|
struct afs_vnode *new_dvnode,
|
|
const char *new_name,
|
|
u64 current_orig_data_version,
|
|
u64 current_new_data_version)
|
|
{
|
|
struct afs_vnode *orig_dvnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(orig_dvnode);
|
|
size_t o_namesz, n_namesz;
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
o_namesz = strlen(orig_name);
|
|
n_namesz = strlen(new_name);
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSRename,
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_RPCFlags) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(o_namesz) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
xdr_strlen(n_namesz),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = orig_dvnode;
|
|
call->reply[1] = new_dvnode;
|
|
call->expected_version = current_orig_data_version + 1;
|
|
call->expected_version_2 = current_new_data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSRENAME);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid);
|
|
bp = xdr_encode_string(bp, orig_name, o_namesz);
|
|
bp = xdr_encode_YFSFid(bp, &new_dvnode->fid);
|
|
bp = xdr_encode_string(bp, new_name, n_namesz);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &orig_dvnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.StoreData64 operation.
|
|
*/
|
|
static int yfs_deliver_fs_store_data(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("");
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
|
|
afs_pages_written_back(vnode, call);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.StoreData64 operation type.
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSStoreData64 = {
|
|
.name = "YFS.StoreData64",
|
|
.op = yfs_FS_StoreData64,
|
|
.deliver = yfs_deliver_fs_store_data,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Store a set of pages to a large file.
|
|
*/
|
|
int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
|
|
pgoff_t first, pgoff_t last,
|
|
unsigned offset, unsigned to)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
loff_t size, pos, i_size;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%llx:%llu},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
size = (loff_t)to - (loff_t)offset;
|
|
if (first != last)
|
|
size += (loff_t)(last - first) << PAGE_SHIFT;
|
|
pos = (loff_t)first << PAGE_SHIFT;
|
|
pos += offset;
|
|
|
|
i_size = i_size_read(&vnode->vfs_inode);
|
|
if (pos + size > i_size)
|
|
i_size = size + pos;
|
|
|
|
_debug("size %llx, at %llx, i_size %llx",
|
|
(unsigned long long)size, (unsigned long long)pos,
|
|
(unsigned long long)i_size);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64,
|
|
sizeof(__be32) +
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSStoreStatus) +
|
|
sizeof(struct yfs_xdr_u64) * 3,
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->mapping = mapping;
|
|
call->reply[0] = vnode;
|
|
call->first = first;
|
|
call->last = last;
|
|
call->first_offset = offset;
|
|
call->last_to = to;
|
|
call->send_pages = true;
|
|
call->expected_version = vnode->status.data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSSTOREDATA64);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime);
|
|
bp = xdr_encode_u64(bp, pos);
|
|
bp = xdr_encode_u64(bp, size);
|
|
bp = xdr_encode_u64(bp, i_size);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* deliver reply data to an FS.StoreStatus
|
|
*/
|
|
static int yfs_deliver_fs_store_status(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("");
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.StoreStatus operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSStoreStatus = {
|
|
.name = "YFS.StoreStatus",
|
|
.op = yfs_FS_StoreStatus,
|
|
.deliver = yfs_deliver_fs_store_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
|
|
.name = "YFS.StoreData64",
|
|
.op = yfs_FS_StoreData64,
|
|
.deliver = yfs_deliver_fs_store_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Set the attributes on a file, using YFS.StoreData64 rather than
|
|
* YFS.StoreStatus so as to alter the file size also.
|
|
*/
|
|
static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%llx:%llu},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSStoreStatus) +
|
|
sizeof(struct yfs_xdr_u64) * 3,
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->expected_version = vnode->status.data_version + 1;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSSTOREDATA64);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_YFS_StoreStatus(bp, attr);
|
|
bp = xdr_encode_u64(bp, 0); /* position of start of write */
|
|
bp = xdr_encode_u64(bp, 0); /* size of write */
|
|
bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Set the attributes on a file, using YFS.StoreData64 if there's a change in
|
|
* file size, and YFS.StoreStatus otherwise.
|
|
*/
|
|
int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
if (attr->ia_valid & ATTR_SIZE)
|
|
return yfs_fs_setattr_size(fc, attr);
|
|
|
|
_enter(",%x,{%llx:%llu},,",
|
|
key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(struct yfs_xdr_YFSStoreStatus),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->expected_version = vnode->status.data_version;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSSTORESTATUS);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_YFS_StoreStatus(bp, attr);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to a YFS.GetVolumeStatus operation.
|
|
*/
|
|
static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
|
|
{
|
|
const __be32 *bp;
|
|
char *p;
|
|
u32 size;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
call->unmarshall++;
|
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchVolumeStatus));
|
|
|
|
/* extract the returned status record */
|
|
case 1:
|
|
_debug("extract status");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
xdr_decode_YFSFetchVolumeStatus(&bp, call->reply[1]);
|
|
call->unmarshall++;
|
|
afs_extract_to_tmp(call);
|
|
|
|
/* extract the volume name length */
|
|
case 2:
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("volname length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return afs_protocol_error(call, -EBADMSG,
|
|
afs_eproto_volname_len);
|
|
size = (call->count + 3) & ~3; /* It's padded */
|
|
afs_extract_begin(call, call->reply[2], size);
|
|
call->unmarshall++;
|
|
|
|
/* extract the volume name */
|
|
case 3:
|
|
_debug("extract volname");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
p = call->reply[2];
|
|
p[call->count] = 0;
|
|
_debug("volname '%s'", p);
|
|
afs_extract_to_tmp(call);
|
|
call->unmarshall++;
|
|
|
|
/* extract the offline message length */
|
|
case 4:
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("offline msg length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return afs_protocol_error(call, -EBADMSG,
|
|
afs_eproto_offline_msg_len);
|
|
size = (call->count + 3) & ~3; /* It's padded */
|
|
afs_extract_begin(call, call->reply[2], size);
|
|
call->unmarshall++;
|
|
|
|
/* extract the offline message */
|
|
case 5:
|
|
_debug("extract offline");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
p = call->reply[2];
|
|
p[call->count] = 0;
|
|
_debug("offline '%s'", p);
|
|
|
|
afs_extract_to_tmp(call);
|
|
call->unmarshall++;
|
|
|
|
/* extract the message of the day length */
|
|
case 6:
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count = ntohl(call->tmp);
|
|
_debug("motd length: %u", call->count);
|
|
if (call->count >= AFSNAMEMAX)
|
|
return afs_protocol_error(call, -EBADMSG,
|
|
afs_eproto_motd_len);
|
|
size = (call->count + 3) & ~3; /* It's padded */
|
|
afs_extract_begin(call, call->reply[2], size);
|
|
call->unmarshall++;
|
|
|
|
/* extract the message of the day */
|
|
case 7:
|
|
_debug("extract motd");
|
|
ret = afs_extract_data(call, false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
p = call->reply[2];
|
|
p[call->count] = 0;
|
|
_debug("motd '%s'", p);
|
|
|
|
call->unmarshall++;
|
|
|
|
case 8:
|
|
break;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Destroy a YFS.GetVolumeStatus call.
|
|
*/
|
|
static void yfs_get_volume_status_call_destructor(struct afs_call *call)
|
|
{
|
|
kfree(call->reply[2]);
|
|
call->reply[2] = NULL;
|
|
afs_flat_call_destructor(call);
|
|
}
|
|
|
|
/*
|
|
* YFS.GetVolumeStatus operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
|
|
.name = "YFS.GetVolumeStatus",
|
|
.op = yfs_FS_GetVolumeStatus,
|
|
.deliver = yfs_deliver_fs_get_volume_status,
|
|
.destructor = yfs_get_volume_status_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* fetch the status of a volume
|
|
*/
|
|
int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
|
|
struct afs_volume_status *vs)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
void *tmpbuf;
|
|
|
|
_enter("");
|
|
|
|
tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
|
|
if (!tmpbuf)
|
|
return -ENOMEM;
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_u64),
|
|
sizeof(struct yfs_xdr_YFSFetchVolumeStatus) +
|
|
sizeof(__be32));
|
|
if (!call) {
|
|
kfree(tmpbuf);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
call->reply[1] = vs;
|
|
call->reply[2] = tmpbuf;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_u64(bp, vnode->fid.vid);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an YFS.SetLock, YFS.ExtendLock or YFS.ReleaseLock
|
|
*/
|
|
static int yfs_deliver_fs_xxxx_lock(struct afs_call *call)
|
|
{
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, &vnode->status, vnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSVolSync(&bp, NULL);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.SetLock operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSSetLock = {
|
|
.name = "YFS.SetLock",
|
|
.op = yfs_FS_SetLock,
|
|
.deliver = yfs_deliver_fs_xxxx_lock,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* YFS.ExtendLock operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSExtendLock = {
|
|
.name = "YFS.ExtendLock",
|
|
.op = yfs_FS_ExtendLock,
|
|
.deliver = yfs_deliver_fs_xxxx_lock,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* YFS.ReleaseLock operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSReleaseLock = {
|
|
.name = "YFS.ReleaseLock",
|
|
.op = yfs_FS_ReleaseLock,
|
|
.deliver = yfs_deliver_fs_xxxx_lock,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Set a lock on a file
|
|
*/
|
|
int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid) +
|
|
sizeof(__be32),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSSETLOCK);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
bp = xdr_encode_u32(bp, type);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* extend a lock on a file
|
|
*/
|
|
int yfs_fs_extend_lock(struct afs_fs_cursor *fc)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* release a lock on a file
|
|
*/
|
|
int yfs_fs_release_lock(struct afs_fs_cursor *fc)
|
|
{
|
|
struct afs_vnode *vnode = fc->vnode;
|
|
struct afs_call *call;
|
|
struct afs_net *net = afs_v2net(vnode);
|
|
__be32 *bp;
|
|
|
|
_enter("");
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call)
|
|
return -ENOMEM;
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = vnode;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSRELEASELOCK);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, &vnode->fid);
|
|
yfs_check_req(call, bp);
|
|
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &vnode->fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an FS.FetchStatus with no vnode.
|
|
*/
|
|
static int yfs_deliver_fs_fetch_status(struct afs_call *call)
|
|
{
|
|
struct afs_file_status *status = call->reply[1];
|
|
struct afs_callback *callback = call->reply[2];
|
|
struct afs_volsync *volsync = call->reply[3];
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
int ret;
|
|
|
|
ret = afs_transfer_reply(call);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
_enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode);
|
|
|
|
/* unmarshall the reply once we've received all of it */
|
|
bp = call->buffer;
|
|
ret = yfs_decode_status(call, &bp, status, vnode,
|
|
&call->expected_version, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
xdr_decode_YFSCallBack_raw(&bp, callback);
|
|
xdr_decode_YFSVolSync(&bp, volsync);
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* YFS.FetchStatus operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSFetchStatus = {
|
|
.name = "YFS.FetchStatus",
|
|
.op = yfs_FS_FetchStatus,
|
|
.deliver = yfs_deliver_fs_fetch_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Fetch the status information for a fid without needing a vnode handle.
|
|
*/
|
|
int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
|
|
struct afs_net *net,
|
|
struct afs_fid *fid,
|
|
struct afs_file_status *status,
|
|
struct afs_callback *callback,
|
|
struct afs_volsync *volsync)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
|
|
_enter(",%x,{%llx:%llu},,",
|
|
key_serial(fc->key), fid->vid, fid->vnode);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus,
|
|
sizeof(__be32) * 2 +
|
|
sizeof(struct yfs_xdr_YFSFid),
|
|
sizeof(struct yfs_xdr_YFSFetchStatus) +
|
|
sizeof(struct yfs_xdr_YFSCallBack) +
|
|
sizeof(struct yfs_xdr_YFSVolSync));
|
|
if (!call) {
|
|
fc->ac.error = -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = NULL; /* vnode for fid[0] */
|
|
call->reply[1] = status;
|
|
call->reply[2] = callback;
|
|
call->reply[3] = volsync;
|
|
call->expected_version = 1; /* vnode->status.data_version */
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
|
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */
|
|
bp = xdr_encode_YFSFid(bp, fid);
|
|
yfs_check_req(call, bp);
|
|
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, fid);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|
|
|
|
/*
|
|
* Deliver reply data to an YFS.InlineBulkStatus call
|
|
*/
|
|
static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
|
|
{
|
|
struct afs_file_status *statuses;
|
|
struct afs_callback *callbacks;
|
|
struct afs_vnode *vnode = call->reply[0];
|
|
const __be32 *bp;
|
|
u32 tmp;
|
|
int ret;
|
|
|
|
_enter("{%u}", call->unmarshall);
|
|
|
|
switch (call->unmarshall) {
|
|
case 0:
|
|
afs_extract_to_tmp(call);
|
|
call->unmarshall++;
|
|
|
|
/* Extract the file status count and array in two steps */
|
|
case 1:
|
|
_debug("extract status count");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
tmp = ntohl(call->tmp);
|
|
_debug("status count: %u/%u", tmp, call->count2);
|
|
if (tmp != call->count2)
|
|
return afs_protocol_error(call, -EBADMSG,
|
|
afs_eproto_ibulkst_count);
|
|
|
|
call->count = 0;
|
|
call->unmarshall++;
|
|
more_counts:
|
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus));
|
|
|
|
case 2:
|
|
_debug("extract status array %u", call->count);
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
statuses = call->reply[1];
|
|
ret = yfs_decode_status(call, &bp, &statuses[call->count],
|
|
call->count == 0 ? vnode : NULL,
|
|
NULL, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
call->count++;
|
|
if (call->count < call->count2)
|
|
goto more_counts;
|
|
|
|
call->count = 0;
|
|
call->unmarshall++;
|
|
afs_extract_to_tmp(call);
|
|
|
|
/* Extract the callback count and array in two steps */
|
|
case 3:
|
|
_debug("extract CB count");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
tmp = ntohl(call->tmp);
|
|
_debug("CB count: %u", tmp);
|
|
if (tmp != call->count2)
|
|
return afs_protocol_error(call, -EBADMSG,
|
|
afs_eproto_ibulkst_cb_count);
|
|
call->count = 0;
|
|
call->unmarshall++;
|
|
more_cbs:
|
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack));
|
|
|
|
case 4:
|
|
_debug("extract CB array");
|
|
ret = afs_extract_data(call, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
_debug("unmarshall CB array");
|
|
bp = call->buffer;
|
|
callbacks = call->reply[2];
|
|
xdr_decode_YFSCallBack_raw(&bp, &callbacks[call->count]);
|
|
statuses = call->reply[1];
|
|
if (call->count == 0 && vnode && statuses[0].abort_code == 0) {
|
|
bp = call->buffer;
|
|
xdr_decode_YFSCallBack(call, vnode, &bp);
|
|
}
|
|
call->count++;
|
|
if (call->count < call->count2)
|
|
goto more_cbs;
|
|
|
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
|
|
call->unmarshall++;
|
|
|
|
case 5:
|
|
ret = afs_extract_data(call, false);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bp = call->buffer;
|
|
xdr_decode_YFSVolSync(&bp, call->reply[3]);
|
|
|
|
call->unmarshall++;
|
|
|
|
case 6:
|
|
break;
|
|
}
|
|
|
|
_leave(" = 0 [done]");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* FS.InlineBulkStatus operation type
|
|
*/
|
|
static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
|
|
.name = "YFS.InlineBulkStatus",
|
|
.op = yfs_FS_InlineBulkStatus,
|
|
.deliver = yfs_deliver_fs_inline_bulk_status,
|
|
.destructor = afs_flat_call_destructor,
|
|
};
|
|
|
|
/*
|
|
* Fetch the status information for up to 1024 files
|
|
*/
|
|
int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
|
|
struct afs_net *net,
|
|
struct afs_fid *fids,
|
|
struct afs_file_status *statuses,
|
|
struct afs_callback *callbacks,
|
|
unsigned int nr_fids,
|
|
struct afs_volsync *volsync)
|
|
{
|
|
struct afs_call *call;
|
|
__be32 *bp;
|
|
int i;
|
|
|
|
_enter(",%x,{%llx:%llu},%u",
|
|
key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
|
|
|
|
call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus,
|
|
sizeof(__be32) +
|
|
sizeof(__be32) +
|
|
sizeof(__be32) +
|
|
sizeof(struct yfs_xdr_YFSFid) * nr_fids,
|
|
sizeof(struct yfs_xdr_YFSFetchStatus));
|
|
if (!call) {
|
|
fc->ac.error = -ENOMEM;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
call->key = fc->key;
|
|
call->reply[0] = NULL; /* vnode for fid[0] */
|
|
call->reply[1] = statuses;
|
|
call->reply[2] = callbacks;
|
|
call->reply[3] = volsync;
|
|
call->count2 = nr_fids;
|
|
|
|
/* marshall the parameters */
|
|
bp = call->request;
|
|
bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
|
|
bp = xdr_encode_u32(bp, 0); /* RPCFlags */
|
|
bp = xdr_encode_u32(bp, nr_fids);
|
|
for (i = 0; i < nr_fids; i++)
|
|
bp = xdr_encode_YFSFid(bp, &fids[i]);
|
|
yfs_check_req(call, bp);
|
|
|
|
call->cb_break = fc->cb_break;
|
|
afs_use_fs_server(call, fc->cbi);
|
|
trace_afs_make_fs_call(call, &fids[0]);
|
|
return afs_make_call(&fc->ac, call, GFP_NOFS, false);
|
|
}
|