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1953 lines
47 KiB
1953 lines
47 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* 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 ([email protected]) |
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*/ |
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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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#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 __be32 *xdr_encode_name(__be32 *bp, const struct qstr *p) |
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{ |
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return xdr_encode_string(bp, p->name, p->len); |
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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(__be32 *bp, mode_t *mode, |
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const struct timespec64 *t) |
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{ |
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struct yfs_xdr_YFSStoreStatus *x = (void *)bp; |
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mode_t masked_mode = mode ? *mode & S_IALLUGO : 0; |
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s64 mtime = linux_to_yfs_time(t); |
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u32 mask = AFS_SET_MTIME; |
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mask |= mode ? AFS_SET_MODE : 0; |
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x->mask = htonl(mask); |
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x->mode = htonl(masked_mode); |
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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_warn("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 < 6 * 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, 8); |
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pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1])); |
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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 void xdr_decode_YFSFetchStatus(const __be32 **_bp, |
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struct afs_call *call, |
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struct afs_status_cb *scb) |
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{ |
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const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp; |
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struct afs_file_status *status = &scb->status; |
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u32 type; |
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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 (status->abort_code == VNOVNODE) |
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status->nlink = 0; |
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scb->have_error = true; |
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goto advance; |
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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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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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status->nlink = ntohl(xdr->nlink); |
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status->author = xdr_to_u64(xdr->author); |
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status->owner = xdr_to_u64(xdr->owner); |
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status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ |
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status->anon_access = ntohl(xdr->anon_access); |
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status->mode = ntohl(xdr->mode) & S_IALLUGO; |
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status->group = xdr_to_u64(xdr->group); |
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status->lock_count = ntohl(xdr->lock_count); |
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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->size = xdr_to_u64(xdr->size); |
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status->data_version = xdr_to_u64(xdr->data_version); |
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scb->have_status = true; |
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advance: |
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*_bp += xdr_size(xdr); |
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return; |
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bad: |
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xdr_dump_bad(*_bp); |
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afs_protocol_error(call, afs_eproto_bad_status); |
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goto advance; |
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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(const __be32 **_bp, |
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struct afs_call *call, |
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struct afs_status_cb *scb) |
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{ |
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struct yfs_xdr_YFSCallBack *x = (void *)*_bp; |
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struct afs_callback *cb = &scb->callback; |
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ktime_t cb_expiry; |
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cb_expiry = ktime_add(call->issue_time, xdr_to_u64(x->expiration_time) * 100); |
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cb->expires_at = ktime_divns(cb_expiry, NSEC_PER_SEC); |
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scb->have_cb = true; |
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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 operations that just return a file status and a volume |
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* sync record. |
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*/ |
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static int yfs_deliver_status_and_volsync(struct afs_call *call) |
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{ |
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struct afs_operation *op = call->op; |
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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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bp = call->buffer; |
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xdr_decode_YFSFetchStatus(&bp, call, &op->file[0].scb); |
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xdr_decode_YFSVolSync(&bp, &op->volsync); |
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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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* Deliver reply data to an YFS.FetchData64. |
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*/ |
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static int yfs_deliver_fs_fetch_data64(struct afs_call *call) |
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{ |
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struct afs_operation *op = call->op; |
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struct afs_vnode_param *vp = &op->file[0]; |
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struct afs_read *req = op->fetch.req; |
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const __be32 *bp; |
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int ret; |
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_enter("{%u,%zu, %zu/%llu}", |
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call->unmarshall, call->iov_len, iov_iter_count(call->iter), |
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req->actual_len); |
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switch (call->unmarshall) { |
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case 0: |
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req->actual_len = 0; |
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afs_extract_to_tmp64(call); |
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call->unmarshall++; |
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fallthrough; |
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/* Extract the returned data length into ->actual_len. This |
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* may indicate more or less data than was requested will be |
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* returned. |
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*/ |
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case 1: |
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_debug("extract data length"); |
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ret = afs_extract_data(call, true); |
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if (ret < 0) |
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return ret; |
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req->actual_len = be64_to_cpu(call->tmp64); |
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_debug("DATA length: %llu", req->actual_len); |
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if (req->actual_len == 0) |
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goto no_more_data; |
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call->iter = req->iter; |
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call->iov_len = min(req->actual_len, req->len); |
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call->unmarshall++; |
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fallthrough; |
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/* extract the returned data */ |
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case 2: |
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_debug("extract data %zu/%llu", |
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iov_iter_count(call->iter), req->actual_len); |
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ret = afs_extract_data(call, true); |
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if (ret < 0) |
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return ret; |
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call->iter = &call->def_iter; |
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if (req->actual_len <= req->len) |
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goto no_more_data; |
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/* Discard any excess data the server gave us */ |
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afs_extract_discard(call, req->actual_len - req->len); |
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call->unmarshall = 3; |
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fallthrough; |
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case 3: |
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_debug("extract discard %zu/%llu", |
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iov_iter_count(call->iter), req->actual_len - req->len); |
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ret = afs_extract_data(call, true); |
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if (ret < 0) |
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return ret; |
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no_more_data: |
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call->unmarshall = 4; |
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afs_extract_to_buf(call, |
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sizeof(struct yfs_xdr_YFSFetchStatus) + |
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sizeof(struct yfs_xdr_YFSCallBack) + |
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sizeof(struct yfs_xdr_YFSVolSync)); |
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fallthrough; |
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/* extract the metadata */ |
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case 4: |
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ret = afs_extract_data(call, false); |
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if (ret < 0) |
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return ret; |
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bp = call->buffer; |
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xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); |
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xdr_decode_YFSCallBack(&bp, call, &vp->scb); |
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xdr_decode_YFSVolSync(&bp, &op->volsync); |
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req->data_version = vp->scb.status.data_version; |
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req->file_size = vp->scb.status.size; |
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call->unmarshall++; |
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fallthrough; |
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case 5: |
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break; |
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} |
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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.FetchData64 operation type |
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*/ |
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static const struct afs_call_type yfs_RXYFSFetchData64 = { |
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.name = "YFS.FetchData64", |
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.op = yfs_FS_FetchData64, |
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.deliver = yfs_deliver_fs_fetch_data64, |
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.destructor = afs_flat_call_destructor, |
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}; |
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/* |
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* Fetch data from a file. |
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*/ |
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void yfs_fs_fetch_data(struct afs_operation *op) |
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{ |
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struct afs_vnode_param *vp = &op->file[0]; |
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struct afs_read *req = op->fetch.req; |
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struct afs_call *call; |
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__be32 *bp; |
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_enter(",%x,{%llx:%llu},%llx,%llx", |
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key_serial(op->key), vp->fid.vid, vp->fid.vnode, |
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req->pos, req->len); |
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call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchData64, |
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sizeof(__be32) * 2 + |
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sizeof(struct yfs_xdr_YFSFid) + |
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sizeof(struct yfs_xdr_u64) * 2, |
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sizeof(struct yfs_xdr_YFSFetchStatus) + |
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sizeof(struct yfs_xdr_YFSCallBack) + |
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sizeof(struct yfs_xdr_YFSVolSync)); |
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if (!call) |
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return afs_op_nomem(op); |
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req->call_debug_id = call->debug_id; |
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/* marshall the parameters */ |
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bp = call->request; |
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bp = xdr_encode_u32(bp, YFSFETCHDATA64); |
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bp = xdr_encode_u32(bp, 0); /* RPC flags */ |
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bp = xdr_encode_YFSFid(bp, &vp->fid); |
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bp = xdr_encode_u64(bp, req->pos); |
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bp = xdr_encode_u64(bp, req->len); |
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yfs_check_req(call, bp); |
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trace_afs_make_fs_call(call, &vp->fid); |
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afs_make_op_call(op, call, GFP_NOFS); |
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} |
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/* |
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* Deliver reply data for YFS.CreateFile or YFS.MakeDir. |
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*/ |
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static int yfs_deliver_fs_create_vnode(struct afs_call *call) |
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{ |
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struct afs_operation *op = call->op; |
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struct afs_vnode_param *dvp = &op->file[0]; |
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struct afs_vnode_param *vp = &op->file[1]; |
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const __be32 *bp; |
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int ret; |
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_enter("{%u}", call->unmarshall); |
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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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/* unmarshall the reply once we've received all of it */ |
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bp = call->buffer; |
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xdr_decode_YFSFid(&bp, &op->file[1].fid); |
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xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); |
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xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb); |
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xdr_decode_YFSCallBack(&bp, call, &vp->scb); |
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xdr_decode_YFSVolSync(&bp, &op->volsync); |
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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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* FS.CreateFile and FS.MakeDir operation type |
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*/ |
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static const struct afs_call_type afs_RXFSCreateFile = { |
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.name = "YFS.CreateFile", |
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.op = yfs_FS_CreateFile, |
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.deliver = yfs_deliver_fs_create_vnode, |
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.destructor = afs_flat_call_destructor, |
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}; |
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/* |
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* Create a file. |
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*/ |
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void yfs_fs_create_file(struct afs_operation *op) |
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{ |
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const struct qstr *name = &op->dentry->d_name; |
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struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_call *call; |
|
size_t reqsz, rplsz; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
reqsz = (sizeof(__be32) + |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len) + |
|
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(op->net, &afs_RXFSCreateFile, reqsz, rplsz); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
bp = xdr_encode_YFSStoreStatus(bp, &op->create.mode, &op->mtime); |
|
bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */ |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
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. |
|
*/ |
|
void yfs_fs_make_dir(struct afs_operation *op) |
|
{ |
|
const struct qstr *name = &op->dentry->d_name; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_call *call; |
|
size_t reqsz, rplsz; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
reqsz = (sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len) + |
|
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(op->net, &yfs_RXFSMakeDir, reqsz, rplsz); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
bp = xdr_encode_YFSStoreStatus(bp, &op->create.mode, &op->mtime); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to a YFS.RemoveFile2 operation. |
|
*/ |
|
static int yfs_deliver_fs_remove_file2(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_vnode_param *vp = &op->file[1]; |
|
struct afs_fid fid; |
|
const __be32 *bp; |
|
int ret; |
|
|
|
_enter("{%u}", call->unmarshall); |
|
|
|
ret = afs_transfer_reply(call); |
|
if (ret < 0) |
|
return ret; |
|
|
|
bp = call->buffer; |
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb); |
|
xdr_decode_YFSFid(&bp, &fid); |
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); |
|
/* Was deleted if vnode->status.abort_code == VNOVNODE. */ |
|
|
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
return 0; |
|
} |
|
|
|
static void yfs_done_fs_remove_file2(struct afs_call *call) |
|
{ |
|
if (call->error == -ECONNABORTED && |
|
call->abort_code == RX_INVALID_OPERATION) { |
|
set_bit(AFS_SERVER_FL_NO_RM2, &call->server->flags); |
|
call->op->flags |= AFS_OPERATION_DOWNGRADE; |
|
} |
|
} |
|
|
|
/* |
|
* 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, |
|
.done = yfs_done_fs_remove_file2, |
|
.destructor = afs_flat_call_destructor, |
|
}; |
|
|
|
/* |
|
* Remove a file and retrieve new file status. |
|
*/ |
|
void yfs_fs_remove_file2(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
const struct qstr *name = &op->dentry->d_name; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile2, |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to a YFS.RemoveFile or YFS.RemoveDir operation. |
|
*/ |
|
static int yfs_deliver_fs_remove(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
const __be32 *bp; |
|
int ret; |
|
|
|
_enter("{%u}", call->unmarshall); |
|
|
|
ret = afs_transfer_reply(call); |
|
if (ret < 0) |
|
return ret; |
|
|
|
bp = call->buffer; |
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb); |
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
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, |
|
}; |
|
|
|
/* |
|
* Remove a file. |
|
*/ |
|
void yfs_fs_remove_file(struct afs_operation *op) |
|
{ |
|
const struct qstr *name = &op->dentry->d_name; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
if (!test_bit(AFS_SERVER_FL_NO_RM2, &op->server->flags)) |
|
return yfs_fs_remove_file2(op); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile, |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* marshall the parameters */ |
|
bp = call->request; |
|
bp = xdr_encode_u32(bp, YFSREMOVEFILE); |
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */ |
|
bp = xdr_encode_YFSFid(bp, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
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 directory. |
|
*/ |
|
void yfs_fs_remove_dir(struct afs_operation *op) |
|
{ |
|
const struct qstr *name = &op->dentry->d_name; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveDir, |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* marshall the parameters */ |
|
bp = call->request; |
|
bp = xdr_encode_u32(bp, YFSREMOVEDIR); |
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */ |
|
bp = xdr_encode_YFSFid(bp, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to a YFS.Link operation. |
|
*/ |
|
static int yfs_deliver_fs_link(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_vnode_param *vp = &op->file[1]; |
|
const __be32 *bp; |
|
int ret; |
|
|
|
_enter("{%u}", call->unmarshall); |
|
|
|
ret = afs_transfer_reply(call); |
|
if (ret < 0) |
|
return ret; |
|
|
|
bp = call->buffer; |
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); |
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb); |
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
_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. |
|
*/ |
|
void yfs_fs_link(struct afs_operation *op) |
|
{ |
|
const struct qstr *name = &op->dentry->d_name; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_vnode_param *vp = &op->file[1]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSLink, |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len) + |
|
sizeof(struct yfs_xdr_YFSFid), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
bp = xdr_encode_YFSFid(bp, &vp->fid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &vp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to a YFS.Symlink operation. |
|
*/ |
|
static int yfs_deliver_fs_symlink(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_vnode_param *vp = &op->file[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; |
|
xdr_decode_YFSFid(&bp, &vp->fid); |
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); |
|
xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb); |
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
|
|
_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. |
|
*/ |
|
void yfs_fs_symlink(struct afs_operation *op) |
|
{ |
|
const struct qstr *name = &op->dentry->d_name; |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_call *call; |
|
size_t contents_sz; |
|
mode_t mode = 0777; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
contents_sz = strlen(op->create.symlink); |
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSSymlink, |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(name->len) + |
|
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 afs_op_nomem(op); |
|
|
|
/* 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, &dvp->fid); |
|
bp = xdr_encode_name(bp, name); |
|
bp = xdr_encode_string(bp, op->create.symlink, contents_sz); |
|
bp = xdr_encode_YFSStoreStatus(bp, &mode, &op->mtime); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call1(call, &dvp->fid, name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to a YFS.Rename operation. |
|
*/ |
|
static int yfs_deliver_fs_rename(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *orig_dvp = &op->file[0]; |
|
struct afs_vnode_param *new_dvp = &op->file[1]; |
|
const __be32 *bp; |
|
int ret; |
|
|
|
_enter("{%u}", call->unmarshall); |
|
|
|
ret = afs_transfer_reply(call); |
|
if (ret < 0) |
|
return ret; |
|
|
|
bp = call->buffer; |
|
/* If the two dirs are the same, we have two copies of the same status |
|
* report, so we just decode it twice. |
|
*/ |
|
xdr_decode_YFSFetchStatus(&bp, call, &orig_dvp->scb); |
|
xdr_decode_YFSFetchStatus(&bp, call, &new_dvp->scb); |
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
_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. |
|
*/ |
|
void yfs_fs_rename(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *orig_dvp = &op->file[0]; |
|
struct afs_vnode_param *new_dvp = &op->file[1]; |
|
const struct qstr *orig_name = &op->dentry->d_name; |
|
const struct qstr *new_name = &op->dentry_2->d_name; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSRename, |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_RPCFlags) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(orig_name->len) + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
xdr_strlen(new_name->len), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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_dvp->fid); |
|
bp = xdr_encode_name(bp, orig_name); |
|
bp = xdr_encode_YFSFid(bp, &new_dvp->fid); |
|
bp = xdr_encode_name(bp, new_name); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* YFS.StoreData64 operation type. |
|
*/ |
|
static const struct afs_call_type yfs_RXYFSStoreData64 = { |
|
.name = "YFS.StoreData64", |
|
.op = yfs_FS_StoreData64, |
|
.deliver = yfs_deliver_status_and_volsync, |
|
.destructor = afs_flat_call_destructor, |
|
}; |
|
|
|
/* |
|
* Store a set of pages to a large file. |
|
*/ |
|
void yfs_fs_store_data(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(",%x,{%llx:%llu},,", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
|
|
|
_debug("size %llx, at %llx, i_size %llx", |
|
(unsigned long long)op->store.size, |
|
(unsigned long long)op->store.pos, |
|
(unsigned long long)op->store.i_size); |
|
|
|
call = afs_alloc_flat_call(op->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 afs_op_nomem(op); |
|
|
|
call->write_iter = op->store.write_iter; |
|
|
|
/* 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, &vp->fid); |
|
bp = xdr_encode_YFSStoreStatus(bp, NULL, &op->mtime); |
|
bp = xdr_encode_u64(bp, op->store.pos); |
|
bp = xdr_encode_u64(bp, op->store.size); |
|
bp = xdr_encode_u64(bp, op->store.i_size); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* YFS.StoreStatus operation type |
|
*/ |
|
static const struct afs_call_type yfs_RXYFSStoreStatus = { |
|
.name = "YFS.StoreStatus", |
|
.op = yfs_FS_StoreStatus, |
|
.deliver = yfs_deliver_status_and_volsync, |
|
.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_status_and_volsync, |
|
.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 void yfs_fs_setattr_size(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
struct iattr *attr = op->setattr.attr; |
|
__be32 *bp; |
|
|
|
_enter(",%x,{%llx:%llu},,", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
|
|
|
call = afs_alloc_flat_call(op->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 afs_op_nomem(op); |
|
|
|
/* 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, &vp->fid); |
|
bp = xdr_encode_YFS_StoreStatus(bp, attr); |
|
bp = xdr_encode_u64(bp, attr->ia_size); /* 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); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Set the attributes on a file, using YFS.StoreData64 if there's a change in |
|
* file size, and YFS.StoreStatus otherwise. |
|
*/ |
|
void yfs_fs_setattr(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
struct iattr *attr = op->setattr.attr; |
|
__be32 *bp; |
|
|
|
if (attr->ia_valid & ATTR_SIZE) |
|
return yfs_fs_setattr_size(op); |
|
|
|
_enter(",%x,{%llx:%llu},,", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
|
|
|
call = afs_alloc_flat_call(op->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 afs_op_nomem(op); |
|
|
|
/* 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, &vp->fid); |
|
bp = xdr_encode_YFS_StoreStatus(bp, attr); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to a YFS.GetVolumeStatus operation. |
|
*/ |
|
static int yfs_deliver_fs_get_volume_status(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
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)); |
|
fallthrough; |
|
|
|
/* 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, &op->volstatus.vs); |
|
call->unmarshall++; |
|
afs_extract_to_tmp(call); |
|
fallthrough; |
|
|
|
/* 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, afs_eproto_volname_len); |
|
size = (call->count + 3) & ~3; /* It's padded */ |
|
afs_extract_to_buf(call, size); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* extract the volume name */ |
|
case 3: |
|
_debug("extract volname"); |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
p = call->buffer; |
|
p[call->count] = 0; |
|
_debug("volname '%s'", p); |
|
afs_extract_to_tmp(call); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* 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, afs_eproto_offline_msg_len); |
|
size = (call->count + 3) & ~3; /* It's padded */ |
|
afs_extract_to_buf(call, size); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* extract the offline message */ |
|
case 5: |
|
_debug("extract offline"); |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
p = call->buffer; |
|
p[call->count] = 0; |
|
_debug("offline '%s'", p); |
|
|
|
afs_extract_to_tmp(call); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* 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, afs_eproto_motd_len); |
|
size = (call->count + 3) & ~3; /* It's padded */ |
|
afs_extract_to_buf(call, size); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* extract the message of the day */ |
|
case 7: |
|
_debug("extract motd"); |
|
ret = afs_extract_data(call, false); |
|
if (ret < 0) |
|
return ret; |
|
|
|
p = call->buffer; |
|
p[call->count] = 0; |
|
_debug("motd '%s'", p); |
|
|
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
case 8: |
|
break; |
|
} |
|
|
|
_leave(" = 0 [done]"); |
|
return 0; |
|
} |
|
|
|
/* |
|
* 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 = afs_flat_call_destructor, |
|
}; |
|
|
|
/* |
|
* fetch the status of a volume |
|
*/ |
|
void yfs_fs_get_volume_status(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSGetVolumeStatus, |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_u64), |
|
max_t(size_t, |
|
sizeof(struct yfs_xdr_YFSFetchVolumeStatus) + |
|
sizeof(__be32), |
|
AFSOPAQUEMAX + 1)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, vp->fid.vid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* YFS.SetLock operation type |
|
*/ |
|
static const struct afs_call_type yfs_RXYFSSetLock = { |
|
.name = "YFS.SetLock", |
|
.op = yfs_FS_SetLock, |
|
.deliver = yfs_deliver_status_and_volsync, |
|
.done = afs_lock_op_done, |
|
.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_status_and_volsync, |
|
.done = afs_lock_op_done, |
|
.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_status_and_volsync, |
|
.destructor = afs_flat_call_destructor, |
|
}; |
|
|
|
/* |
|
* Set a lock on a file |
|
*/ |
|
void yfs_fs_set_lock(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->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 afs_op_nomem(op); |
|
|
|
/* 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, &vp->fid); |
|
bp = xdr_encode_u32(bp, op->lock.type); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_calli(call, &vp->fid, op->lock.type); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* extend a lock on a file |
|
*/ |
|
void yfs_fs_extend_lock(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSExtendLock, |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_YFSFid), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &vp->fid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* release a lock on a file |
|
*/ |
|
void yfs_fs_release_lock(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(""); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSReleaseLock, |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_YFSFid), |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &vp->fid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver a reply to YFS.FetchStatus |
|
*/ |
|
static int yfs_deliver_fs_fetch_status(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; |
|
const __be32 *bp; |
|
int ret; |
|
|
|
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_YFSFetchStatus(&bp, call, &vp->scb); |
|
xdr_decode_YFSCallBack(&bp, call, &vp->scb); |
|
xdr_decode_YFSVolSync(&bp, &op->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. |
|
*/ |
|
void yfs_fs_fetch_status(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[op->fetch_status.which]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(",%x,{%llx:%llu},,", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
|
|
|
call = afs_alloc_flat_call(op->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) |
|
return afs_op_nomem(op); |
|
|
|
/* 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, &vp->fid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to an YFS.InlineBulkStatus call |
|
*/ |
|
static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_status_cb *scb; |
|
const __be32 *bp; |
|
u32 tmp; |
|
int ret; |
|
|
|
_enter("{%u}", call->unmarshall); |
|
|
|
switch (call->unmarshall) { |
|
case 0: |
|
afs_extract_to_tmp(call); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* 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, op->nr_files); |
|
if (tmp != op->nr_files) |
|
return afs_protocol_error(call, afs_eproto_ibulkst_count); |
|
|
|
call->count = 0; |
|
call->unmarshall++; |
|
more_counts: |
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSFetchStatus)); |
|
fallthrough; |
|
|
|
case 2: |
|
_debug("extract status array %u", call->count); |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
switch (call->count) { |
|
case 0: |
|
scb = &op->file[0].scb; |
|
break; |
|
case 1: |
|
scb = &op->file[1].scb; |
|
break; |
|
default: |
|
scb = &op->more_files[call->count - 2].scb; |
|
break; |
|
} |
|
|
|
bp = call->buffer; |
|
xdr_decode_YFSFetchStatus(&bp, call, scb); |
|
|
|
call->count++; |
|
if (call->count < op->nr_files) |
|
goto more_counts; |
|
|
|
call->count = 0; |
|
call->unmarshall++; |
|
afs_extract_to_tmp(call); |
|
fallthrough; |
|
|
|
/* 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 != op->nr_files) |
|
return afs_protocol_error(call, afs_eproto_ibulkst_cb_count); |
|
call->count = 0; |
|
call->unmarshall++; |
|
more_cbs: |
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSCallBack)); |
|
fallthrough; |
|
|
|
case 4: |
|
_debug("extract CB array"); |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
_debug("unmarshall CB array"); |
|
switch (call->count) { |
|
case 0: |
|
scb = &op->file[0].scb; |
|
break; |
|
case 1: |
|
scb = &op->file[1].scb; |
|
break; |
|
default: |
|
scb = &op->more_files[call->count - 2].scb; |
|
break; |
|
} |
|
|
|
bp = call->buffer; |
|
xdr_decode_YFSCallBack(&bp, call, scb); |
|
call->count++; |
|
if (call->count < op->nr_files) |
|
goto more_cbs; |
|
|
|
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync)); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
case 5: |
|
ret = afs_extract_data(call, false); |
|
if (ret < 0) |
|
return ret; |
|
|
|
bp = call->buffer; |
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
|
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
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 |
|
*/ |
|
void yfs_fs_inline_bulk_status(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *dvp = &op->file[0]; |
|
struct afs_vnode_param *vp = &op->file[1]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
int i; |
|
|
|
_enter(",%x,{%llx:%llu},%u", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSInlineBulkStatus, |
|
sizeof(__be32) + |
|
sizeof(__be32) + |
|
sizeof(__be32) + |
|
sizeof(struct yfs_xdr_YFSFid) * op->nr_files, |
|
sizeof(struct yfs_xdr_YFSFetchStatus)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* marshall the parameters */ |
|
bp = call->request; |
|
bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS); |
|
bp = xdr_encode_u32(bp, 0); /* RPCFlags */ |
|
bp = xdr_encode_u32(bp, op->nr_files); |
|
bp = xdr_encode_YFSFid(bp, &dvp->fid); |
|
bp = xdr_encode_YFSFid(bp, &vp->fid); |
|
for (i = 0; i < op->nr_files - 2; i++) |
|
bp = xdr_encode_YFSFid(bp, &op->more_files[i].fid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_NOFS); |
|
} |
|
|
|
/* |
|
* Deliver reply data to an YFS.FetchOpaqueACL. |
|
*/ |
|
static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call) |
|
{ |
|
struct afs_operation *op = call->op; |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct yfs_acl *yacl = op->yacl; |
|
struct afs_acl *acl; |
|
const __be32 *bp; |
|
unsigned int size; |
|
int ret; |
|
|
|
_enter("{%u}", call->unmarshall); |
|
|
|
switch (call->unmarshall) { |
|
case 0: |
|
afs_extract_to_tmp(call); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* Extract the file ACL length */ |
|
case 1: |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
size = call->count2 = ntohl(call->tmp); |
|
size = round_up(size, 4); |
|
|
|
if (yacl->flags & YFS_ACL_WANT_ACL) { |
|
acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
|
if (!acl) |
|
return -ENOMEM; |
|
yacl->acl = acl; |
|
acl->size = call->count2; |
|
afs_extract_begin(call, acl->data, size); |
|
} else { |
|
afs_extract_discard(call, size); |
|
} |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* Extract the file ACL */ |
|
case 2: |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
afs_extract_to_tmp(call); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* Extract the volume ACL length */ |
|
case 3: |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
size = call->count2 = ntohl(call->tmp); |
|
size = round_up(size, 4); |
|
|
|
if (yacl->flags & YFS_ACL_WANT_VOL_ACL) { |
|
acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); |
|
if (!acl) |
|
return -ENOMEM; |
|
yacl->vol_acl = acl; |
|
acl->size = call->count2; |
|
afs_extract_begin(call, acl->data, size); |
|
} else { |
|
afs_extract_discard(call, size); |
|
} |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* Extract the volume ACL */ |
|
case 4: |
|
ret = afs_extract_data(call, true); |
|
if (ret < 0) |
|
return ret; |
|
|
|
afs_extract_to_buf(call, |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
/* extract the metadata */ |
|
case 5: |
|
ret = afs_extract_data(call, false); |
|
if (ret < 0) |
|
return ret; |
|
|
|
bp = call->buffer; |
|
yacl->inherit_flag = ntohl(*bp++); |
|
yacl->num_cleaned = ntohl(*bp++); |
|
xdr_decode_YFSFetchStatus(&bp, call, &vp->scb); |
|
xdr_decode_YFSVolSync(&bp, &op->volsync); |
|
|
|
call->unmarshall++; |
|
fallthrough; |
|
|
|
case 6: |
|
break; |
|
} |
|
|
|
_leave(" = 0 [done]"); |
|
return 0; |
|
} |
|
|
|
void yfs_free_opaque_acl(struct yfs_acl *yacl) |
|
{ |
|
if (yacl) { |
|
kfree(yacl->acl); |
|
kfree(yacl->vol_acl); |
|
kfree(yacl); |
|
} |
|
} |
|
|
|
/* |
|
* YFS.FetchOpaqueACL operation type |
|
*/ |
|
static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = { |
|
.name = "YFS.FetchOpaqueACL", |
|
.op = yfs_FS_FetchOpaqueACL, |
|
.deliver = yfs_deliver_fs_fetch_opaque_acl, |
|
.destructor = afs_flat_call_destructor, |
|
}; |
|
|
|
/* |
|
* Fetch the YFS advanced ACLs for a file. |
|
*/ |
|
void yfs_fs_fetch_opaque_acl(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
__be32 *bp; |
|
|
|
_enter(",%x,{%llx:%llu},,", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
|
|
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchOpaqueACL, |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_YFSFid), |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* marshall the parameters */ |
|
bp = call->request; |
|
bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL); |
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */ |
|
bp = xdr_encode_YFSFid(bp, &vp->fid); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_KERNEL); |
|
} |
|
|
|
/* |
|
* YFS.StoreOpaqueACL2 operation type |
|
*/ |
|
static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = { |
|
.name = "YFS.StoreOpaqueACL2", |
|
.op = yfs_FS_StoreOpaqueACL2, |
|
.deliver = yfs_deliver_status_and_volsync, |
|
.destructor = afs_flat_call_destructor, |
|
}; |
|
|
|
/* |
|
* Fetch the YFS ACL for a file. |
|
*/ |
|
void yfs_fs_store_opaque_acl2(struct afs_operation *op) |
|
{ |
|
struct afs_vnode_param *vp = &op->file[0]; |
|
struct afs_call *call; |
|
struct afs_acl *acl = op->acl; |
|
size_t size; |
|
__be32 *bp; |
|
|
|
_enter(",%x,{%llx:%llu},,", |
|
key_serial(op->key), vp->fid.vid, vp->fid.vnode); |
|
|
|
size = round_up(acl->size, 4); |
|
call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreOpaqueACL2, |
|
sizeof(__be32) * 2 + |
|
sizeof(struct yfs_xdr_YFSFid) + |
|
sizeof(__be32) + size, |
|
sizeof(struct yfs_xdr_YFSFetchStatus) + |
|
sizeof(struct yfs_xdr_YFSVolSync)); |
|
if (!call) |
|
return afs_op_nomem(op); |
|
|
|
/* marshall the parameters */ |
|
bp = call->request; |
|
bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2); |
|
bp = xdr_encode_u32(bp, 0); /* RPC flags */ |
|
bp = xdr_encode_YFSFid(bp, &vp->fid); |
|
bp = xdr_encode_u32(bp, acl->size); |
|
memcpy(bp, acl->data, acl->size); |
|
if (acl->size != size) |
|
memset((void *)bp + acl->size, 0, size - acl->size); |
|
bp += size / sizeof(__be32); |
|
yfs_check_req(call, bp); |
|
|
|
trace_afs_make_fs_call(call, &vp->fid); |
|
afs_make_op_call(op, call, GFP_KERNEL); |
|
}
|
|
|