| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| David Howells | 11059 | 97.56% | 82 | 86.32% |
| Joe Gorse | 131 | 1.16% | 1 | 1.05% |
| Gustavo A. R. Silva | 63 | 0.56% | 3 | 3.16% |
| Marc Dionne | 36 | 0.32% | 1 | 1.05% |
| David S. Miller | 15 | 0.13% | 1 | 1.05% |
| Eric W. Biedermann | 12 | 0.11% | 1 | 1.05% |
| Andrew Morton | 9 | 0.08% | 1 | 1.05% |
| Jeff Layton | 5 | 0.04% | 1 | 1.05% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.05% |
| Linus Torvalds (pre-git) | 2 | 0.02% | 1 | 1.05% |
| Al Viro | 1 | 0.01% | 1 | 1.05% |
| Linus Torvalds | 1 | 0.01% | 1 | 1.05% |
| Total | 11336 | 95 |
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// SPDX-License-Identifier: GPL-2.0-or-later /* AFS File Server client stubs * * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. * Written by David Howells (dhowells@redhat.com) */ #include <linux/init.h> #include <linux/slab.h> #include <linux/sched.h> #include <linux/circ_buf.h> #include <linux/iversion.h> #include <linux/netfs.h> #include "internal.h" #include "afs_fs.h" #include "xdr_fs.h" /* * decode an AFSFid block */ static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) { const __be32 *bp = *_bp; fid->vid = ntohl(*bp++); fid->vnode = ntohl(*bp++); fid->unique = ntohl(*bp++); *_bp = bp; } /* * Dump a bad file status record. */ static void xdr_dump_bad(const __be32 *bp) { __be32 x[4]; int i; pr_notice("AFS XDR: Bad status record\n"); for (i = 0; i < 5 * 4 * 4; i += 16) { memcpy(x, bp, 16); bp += 4; pr_notice("%03x: %08x %08x %08x %08x\n", i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3])); } memcpy(x, bp, 4); pr_notice("0x50: %08x\n", ntohl(x[0])); } /* * decode an AFSFetchStatus block */ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, struct afs_call *call, struct afs_status_cb *scb) { const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp; struct afs_file_status *status = &scb->status; bool inline_error = (call->operation_ID == afs_FS_InlineBulkStatus); u64 data_version, size; u32 type, abort_code; abort_code = ntohl(xdr->abort_code); if (xdr->if_version != htonl(AFS_FSTATUS_VERSION)) { if (xdr->if_version == htonl(0) && abort_code != 0 && inline_error) { /* The OpenAFS fileserver has a bug in FS.InlineBulkStatus * whereby it doesn't set the interface version in the error * case. */ status->abort_code = abort_code; scb->have_error = true; goto advance; } pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version)); goto bad; } if (abort_code != 0 && inline_error) { status->abort_code = abort_code; scb->have_error = true; goto advance; } type = ntohl(xdr->type); switch (type) { case AFS_FTYPE_FILE: case AFS_FTYPE_DIR: case AFS_FTYPE_SYMLINK: status->type = type; break; default: goto bad; } status->nlink = ntohl(xdr->nlink); status->author = ntohl(xdr->author); status->owner = ntohl(xdr->owner); status->caller_access = ntohl(xdr->caller_access); /* Ticket dependent */ status->anon_access = ntohl(xdr->anon_access); status->mode = ntohl(xdr->mode) & S_IALLUGO; status->group = ntohl(xdr->group); status->lock_count = ntohl(xdr->lock_count); status->mtime_client.tv_sec = ntohl(xdr->mtime_client); status->mtime_client.tv_nsec = 0; status->mtime_server.tv_sec = ntohl(xdr->mtime_server); status->mtime_server.tv_nsec = 0; size = (u64)ntohl(xdr->size_lo); size |= (u64)ntohl(xdr->size_hi) << 32; status->size = size; data_version = (u64)ntohl(xdr->data_version_lo); data_version |= (u64)ntohl(xdr->data_version_hi) << 32; status->data_version = data_version; scb->have_status = true; advance: *_bp = (const void *)*_bp + sizeof(*xdr); return; bad: xdr_dump_bad(*_bp); afs_protocol_error(call, afs_eproto_bad_status); goto advance; } static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry) { return ktime_divns(call->issue_time, NSEC_PER_SEC) + expiry; } static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_call *call, struct afs_status_cb *scb) { struct afs_callback *cb = &scb->callback; const __be32 *bp = *_bp; bp++; /* version */ cb->expires_at = xdr_decode_expiry(call, ntohl(*bp++)); bp++; /* type */ scb->have_cb = true; *_bp = bp; } /* * decode an AFSVolSync block */ static void xdr_decode_AFSVolSync(const __be32 **_bp, struct afs_volsync *volsync) { const __be32 *bp = *_bp; u32 creation; creation = ntohl(*bp++); bp++; /* spare2 */ bp++; /* spare3 */ bp++; /* spare4 */ bp++; /* spare5 */ bp++; /* spare6 */ *_bp = bp; if (volsync) volsync->creation = creation; } /* * encode the requested attributes into an AFSStoreStatus block */ static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) { __be32 *bp = *_bp; u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; mask = 0; if (attr->ia_valid & ATTR_MTIME) { mask |= AFS_SET_MTIME; mtime = attr->ia_mtime.tv_sec; } if (attr->ia_valid & ATTR_UID) { mask |= AFS_SET_OWNER; owner = from_kuid(&init_user_ns, attr->ia_uid); } if (attr->ia_valid & ATTR_GID) { mask |= AFS_SET_GROUP; group = from_kgid(&init_user_ns, attr->ia_gid); } if (attr->ia_valid & ATTR_MODE) { mask |= AFS_SET_MODE; mode = attr->ia_mode & S_IALLUGO; } *bp++ = htonl(mask); *bp++ = htonl(mtime); *bp++ = htonl(owner); *bp++ = htonl(group); *bp++ = htonl(mode); *bp++ = 0; /* segment size */ *_bp = bp; } /* * decode an AFSFetchVolumeStatus block */ static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, struct afs_volume_status *vs) { const __be32 *bp = *_bp; vs->vid = ntohl(*bp++); vs->parent_id = ntohl(*bp++); vs->online = ntohl(*bp++); vs->in_service = ntohl(*bp++); vs->blessed = ntohl(*bp++); vs->needs_salvage = ntohl(*bp++); vs->type = ntohl(*bp++); vs->min_quota = ntohl(*bp++); vs->max_quota = ntohl(*bp++); vs->blocks_in_use = ntohl(*bp++); vs->part_blocks_avail = ntohl(*bp++); vs->part_max_blocks = ntohl(*bp++); vs->vol_copy_date = 0; vs->vol_backup_date = 0; *_bp = bp; } /* * deliver reply data to an FS.FetchStatus */ static int afs_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_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSCallBack(&bp, call, &vp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.FetchStatus operation type */ static const struct afs_call_type afs_RXFSFetchStatus = { .name = "FS.FetchStatus", .op = afs_FS_FetchStatus, .deliver = afs_deliver_fs_fetch_status, .destructor = afs_flat_call_destructor, }; /* * fetch the status information for a file */ void afs_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, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; bp[0] = htonl(FSFETCHSTATUS); bp[1] = htonl(vp->fid.vid); bp[2] = htonl(vp->fid.vnode); bp[3] = htonl(vp->fid.unique); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.FetchData */ static int afs_deliver_fs_fetch_data(struct afs_call *call) { struct afs_operation *op = call->op; struct afs_vnode_param *vp = &op->file[0]; struct afs_read *req = op->fetch.req; const __be32 *bp; size_t count_before; int ret; _enter("{%u,%zu,%zu/%llu}", call->unmarshall, call->iov_len, iov_iter_count(call->iter), req->actual_len); switch (call->unmarshall) { case 0: req->actual_len = 0; call->unmarshall++; if (call->operation_ID == FSFETCHDATA64) { afs_extract_to_tmp64(call); } else { call->tmp_u = htonl(0); afs_extract_to_tmp(call); } fallthrough; /* Extract the returned data length into * ->actual_len. This may indicate more or less data than was * requested will be returned. */ 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); if (req->actual_len == 0) goto no_more_data; call->iter = req->iter; call->iov_len = min(req->actual_len, req->len); call->unmarshall++; fallthrough; /* extract the returned data */ case 2: count_before = call->iov_len; _debug("extract data %zu/%llu", count_before, req->actual_len); ret = afs_extract_data(call, true); if (req->subreq) { req->subreq->transferred += count_before - call->iov_len; netfs_read_subreq_progress(req->subreq, false); } if (ret < 0) return ret; call->iter = &call->def_iter; if (req->actual_len <= req->len) goto no_more_data; /* Discard any excess data the server gave us */ afs_extract_discard(call, req->actual_len - req->len); call->unmarshall = 3; fallthrough; 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, (21 + 3 + 6) * 4); fallthrough; /* extract the metadata */ case 4: ret = afs_extract_data(call, false); if (ret < 0) return ret; bp = call->buffer; xdr_decode_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSCallBack(&bp, call, &vp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); req->data_version = vp->scb.status.data_version; req->file_size = vp->scb.status.size; call->unmarshall++; fallthrough; case 5: break; } _leave(" = 0 [done]"); return 0; } /* * FS.FetchData operation type */ static const struct afs_call_type afs_RXFSFetchData = { .name = "FS.FetchData", .op = afs_FS_FetchData, .deliver = afs_deliver_fs_fetch_data, .destructor = afs_flat_call_destructor, }; static const struct afs_call_type afs_RXFSFetchData64 = { .name = "FS.FetchData64", .op = afs_FS_FetchData64, .deliver = afs_deliver_fs_fetch_data, .destructor = afs_flat_call_destructor, }; /* * fetch data from a very large file */ static void afs_fs_fetch_data64(struct afs_operation *op) { struct afs_vnode_param *vp = &op->file[0]; struct afs_read *req = op->fetch.req; struct afs_call *call; __be32 *bp; _enter(""); call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; bp[0] = htonl(FSFETCHDATA64); bp[1] = htonl(vp->fid.vid); bp[2] = htonl(vp->fid.vnode); bp[3] = htonl(vp->fid.unique); bp[4] = htonl(upper_32_bits(req->pos)); bp[5] = htonl(lower_32_bits(req->pos)); bp[6] = 0; bp[7] = htonl(lower_32_bits(req->len)); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * fetch data from a file */ void afs_fs_fetch_data(struct afs_operation *op) { struct afs_vnode_param *vp = &op->file[0]; struct afs_call *call; struct afs_read *req = op->fetch.req; __be32 *bp; if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) return afs_fs_fetch_data64(op); _enter(""); call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); if (!call) return afs_op_nomem(op); req->call_debug_id = call->debug_id; /* marshall the parameters */ bp = call->request; bp[0] = htonl(FSFETCHDATA); bp[1] = htonl(vp->fid.vid); bp[2] = htonl(vp->fid.vnode); bp[3] = htonl(vp->fid.unique); bp[4] = htonl(lower_32_bits(req->pos)); bp[5] = htonl(lower_32_bits(req->len)); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.CreateFile or an FS.MakeDir */ static int afs_deliver_fs_create_vnode(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; 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_AFSFid(&bp, &op->file[1].fid); xdr_decode_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb); xdr_decode_AFSCallBack(&bp, call, &vp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.CreateFile and FS.MakeDir operation type */ static const struct afs_call_type afs_RXFSCreateFile = { .name = "FS.CreateFile", .op = afs_FS_CreateFile, .deliver = afs_deliver_fs_create_vnode, .destructor = afs_flat_call_destructor, }; /* * Create a file. */ void afs_fs_create_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; size_t namesz, reqsz, padsz; __be32 *bp; _enter(""); namesz = name->len; padsz = (4 - (namesz & 3)) & 3; reqsz = (5 * 4) + namesz + padsz + (6 * 4); call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, reqsz, (3 + 21 + 21 + 3 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSCREATEFILE); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name->name, namesz); bp = (void *) bp + namesz; if (padsz > 0) { memset(bp, 0, padsz); bp = (void *) bp + padsz; } *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); *bp++ = htonl(op->mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */ *bp++ = 0; /* segment size */ call->fid = dvp->fid; trace_afs_make_fs_call1(call, &dvp->fid, name); afs_make_op_call(op, call, GFP_NOFS); } static const struct afs_call_type afs_RXFSMakeDir = { .name = "FS.MakeDir", .op = afs_FS_MakeDir, .deliver = afs_deliver_fs_create_vnode, .destructor = afs_flat_call_destructor, }; /* * Create a new directory */ void afs_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 namesz, reqsz, padsz; __be32 *bp; _enter(""); namesz = name->len; padsz = (4 - (namesz & 3)) & 3; reqsz = (5 * 4) + namesz + padsz + (6 * 4); call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir, reqsz, (3 + 21 + 21 + 3 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSMAKEDIR); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name->name, namesz); bp = (void *) bp + namesz; if (padsz > 0) { memset(bp, 0, padsz); bp = (void *) bp + padsz; } *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); *bp++ = htonl(op->mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */ *bp++ = 0; /* segment size */ call->fid = dvp->fid; trace_afs_make_fs_call1(call, &dvp->fid, name); afs_make_op_call(op, call, GFP_NOFS); } /* * Deliver reply data to any operation that returns status and volume sync. */ static int afs_deliver_fs_file_status_and_vol(struct afs_call *call) { struct afs_operation *op = call->op; struct afs_vnode_param *vp = &op->file[0]; 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_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.RemoveFile operation type */ static const struct afs_call_type afs_RXFSRemoveFile = { .name = "FS.RemoveFile", .op = afs_FS_RemoveFile, .deliver = afs_deliver_fs_file_status_and_vol, .destructor = afs_flat_call_destructor, }; /* * Remove a file. */ void afs_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; size_t namesz, reqsz, padsz; __be32 *bp; _enter(""); namesz = name->len; padsz = (4 - (namesz & 3)) & 3; reqsz = (5 * 4) + namesz + padsz; call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile, reqsz, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSREMOVEFILE); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name->name, namesz); bp = (void *) bp + namesz; if (padsz > 0) { memset(bp, 0, padsz); bp = (void *) bp + padsz; } call->fid = dvp->fid; trace_afs_make_fs_call1(call, &dvp->fid, name); afs_make_op_call(op, call, GFP_NOFS); } static const struct afs_call_type afs_RXFSRemoveDir = { .name = "FS.RemoveDir", .op = afs_FS_RemoveDir, .deliver = afs_deliver_fs_file_status_and_vol, .destructor = afs_flat_call_destructor, }; /* * Remove a directory. */ void afs_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; size_t namesz, reqsz, padsz; __be32 *bp; _enter(""); namesz = name->len; padsz = (4 - (namesz & 3)) & 3; reqsz = (5 * 4) + namesz + padsz; call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir, reqsz, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSREMOVEDIR); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name->name, namesz); bp = (void *) bp + namesz; if (padsz > 0) { memset(bp, 0, padsz); bp = (void *) bp + padsz; } call->fid = dvp->fid; trace_afs_make_fs_call1(call, &dvp->fid, name); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.Link */ static int afs_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; /* unmarshall the reply once we've received all of it */ bp = call->buffer; xdr_decode_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.Link operation type */ static const struct afs_call_type afs_RXFSLink = { .name = "FS.Link", .op = afs_FS_Link, .deliver = afs_deliver_fs_link, .destructor = afs_flat_call_destructor, }; /* * make a hard link */ void afs_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; size_t namesz, reqsz, padsz; __be32 *bp; _enter(""); namesz = name->len; padsz = (4 - (namesz & 3)) & 3; reqsz = (5 * 4) + namesz + padsz + (3 * 4); call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSLINK); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name->name, namesz); bp = (void *) bp + namesz; if (padsz > 0) { memset(bp, 0, padsz); bp = (void *) bp + padsz; } *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); call->fid = vp->fid; trace_afs_make_fs_call1(call, &vp->fid, name); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.Symlink */ static int afs_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_AFSFid(&bp, &vp->fid); xdr_decode_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.Symlink operation type */ static const struct afs_call_type afs_RXFSSymlink = { .name = "FS.Symlink", .op = afs_FS_Symlink, .deliver = afs_deliver_fs_symlink, .destructor = afs_flat_call_destructor, }; /* * create a symbolic link */ void afs_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 namesz, reqsz, padsz, c_namesz, c_padsz; __be32 *bp; _enter(""); namesz = name->len; padsz = (4 - (namesz & 3)) & 3; c_namesz = strlen(op->create.symlink); c_padsz = (4 - (c_namesz & 3)) & 3; reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz, (3 + 21 + 21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSYMLINK); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(namesz); memcpy(bp, name->name, namesz); bp = (void *) bp + namesz; if (padsz > 0) { memset(bp, 0, padsz); bp = (void *) bp + padsz; } *bp++ = htonl(c_namesz); memcpy(bp, op->create.symlink, c_namesz); bp = (void *) bp + c_namesz; if (c_padsz > 0) { memset(bp, 0, c_padsz); bp = (void *) bp + c_padsz; } *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME); *bp++ = htonl(op->mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = htonl(S_IRWXUGO); /* unix mode */ *bp++ = 0; /* segment size */ call->fid = dvp->fid; trace_afs_make_fs_call1(call, &dvp->fid, name); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.Rename */ static int afs_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; 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_AFSFetchStatus(&bp, call, &orig_dvp->scb); xdr_decode_AFSFetchStatus(&bp, call, &new_dvp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.Rename operation type */ static const struct afs_call_type afs_RXFSRename = { .name = "FS.Rename", .op = afs_FS_Rename, .deliver = afs_deliver_fs_rename, .destructor = afs_flat_call_destructor, }; /* * Rename/move a file or directory. */ void afs_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; size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; __be32 *bp; _enter(""); o_namesz = orig_name->len; o_padsz = (4 - (o_namesz & 3)) & 3; n_namesz = new_name->len; n_padsz = (4 - (n_namesz & 3)) & 3; reqsz = (4 * 4) + 4 + o_namesz + o_padsz + (3 * 4) + 4 + n_namesz + n_padsz; call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSRENAME); *bp++ = htonl(orig_dvp->fid.vid); *bp++ = htonl(orig_dvp->fid.vnode); *bp++ = htonl(orig_dvp->fid.unique); *bp++ = htonl(o_namesz); memcpy(bp, orig_name->name, o_namesz); bp = (void *) bp + o_namesz; if (o_padsz > 0) { memset(bp, 0, o_padsz); bp = (void *) bp + o_padsz; } *bp++ = htonl(new_dvp->fid.vid); *bp++ = htonl(new_dvp->fid.vnode); *bp++ = htonl(new_dvp->fid.unique); *bp++ = htonl(n_namesz); memcpy(bp, new_name->name, n_namesz); bp = (void *) bp + n_namesz; if (n_padsz > 0) { memset(bp, 0, n_padsz); bp = (void *) bp + n_padsz; } call->fid = orig_dvp->fid; trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name); afs_make_op_call(op, call, GFP_NOFS); } /* * Deliver reply data to FS.StoreData or FS.StoreStatus */ static int afs_deliver_fs_store_data(struct afs_call *call) { struct afs_operation *op = call->op; struct afs_vnode_param *vp = &op->file[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; xdr_decode_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.StoreData operation type */ static const struct afs_call_type afs_RXFSStoreData = { .name = "FS.StoreData", .op = afs_FS_StoreData, .deliver = afs_deliver_fs_store_data, .destructor = afs_flat_call_destructor, }; static const struct afs_call_type afs_RXFSStoreData64 = { .name = "FS.StoreData64", .op = afs_FS_StoreData64, .deliver = afs_deliver_fs_store_data, .destructor = afs_flat_call_destructor, }; /* * store a set of pages to a very large file */ static void afs_fs_store_data64(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, &afs_RXFSStoreData64, (4 + 6 + 3 * 2) * 4, (21 + 6) * 4); if (!call) return afs_op_nomem(op); call->write_iter = op->store.write_iter; /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSTOREDATA64); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); *bp++ = htonl(AFS_SET_MTIME); /* mask */ *bp++ = htonl(op->mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = 0; /* unix mode */ *bp++ = 0; /* segment size */ *bp++ = htonl(upper_32_bits(op->store.pos)); *bp++ = htonl(lower_32_bits(op->store.pos)); *bp++ = htonl(upper_32_bits(op->store.size)); *bp++ = htonl(lower_32_bits(op->store.size)); *bp++ = htonl(upper_32_bits(op->store.i_size)); *bp++ = htonl(lower_32_bits(op->store.i_size)); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * Write data to a file on the server. */ void afs_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); if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) return afs_fs_store_data64(op); call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData, (4 + 6 + 3) * 4, (21 + 6) * 4); if (!call) return afs_op_nomem(op); call->write_iter = op->store.write_iter; /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSTOREDATA); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); *bp++ = htonl(AFS_SET_MTIME); /* mask */ *bp++ = htonl(op->mtime.tv_sec); /* mtime */ *bp++ = 0; /* owner */ *bp++ = 0; /* group */ *bp++ = 0; /* unix mode */ *bp++ = 0; /* segment size */ *bp++ = htonl(lower_32_bits(op->store.pos)); *bp++ = htonl(lower_32_bits(op->store.size)); *bp++ = htonl(lower_32_bits(op->store.i_size)); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * FS.StoreStatus operation type */ static const struct afs_call_type afs_RXFSStoreStatus = { .name = "FS.StoreStatus", .op = afs_FS_StoreStatus, .deliver = afs_deliver_fs_store_data, .destructor = afs_flat_call_destructor, }; static const struct afs_call_type afs_RXFSStoreData_as_Status = { .name = "FS.StoreData", .op = afs_FS_StoreData, .deliver = afs_deliver_fs_store_data, .destructor = afs_flat_call_destructor, }; static const struct afs_call_type afs_RXFSStoreData64_as_Status = { .name = "FS.StoreData64", .op = afs_FS_StoreData64, .deliver = afs_deliver_fs_store_data, .destructor = afs_flat_call_destructor, }; /* * set the attributes on a very large file, using FS.StoreData rather than * FS.StoreStatus so as to alter the file size also */ static void afs_fs_setattr_size64(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); ASSERT(attr->ia_valid & ATTR_SIZE); call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status, (4 + 6 + 3 * 2) * 4, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSTOREDATA64); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); xdr_encode_AFS_StoreStatus(&bp, attr); *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */ *bp++ = htonl(lower_32_bits(attr->ia_size)); *bp++ = 0; /* size of write */ *bp++ = 0; *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */ *bp++ = htonl(lower_32_bits(attr->ia_size)); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus * so as to alter the file size also */ static void afs_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); ASSERT(attr->ia_valid & ATTR_SIZE); if (test_bit(AFS_SERVER_FL_HAS_FS64, &op->server->flags)) return afs_fs_setattr_size64(op); call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status, (4 + 6 + 3) * 4, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSTOREDATA); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); xdr_encode_AFS_StoreStatus(&bp, attr); *bp++ = htonl(attr->ia_size); /* position of start of write */ *bp++ = 0; /* size of write */ *bp++ = htonl(attr->ia_size); /* new file length */ call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * set the attributes on a file, using FS.StoreData if there's a change in file * size, and FS.StoreStatus otherwise */ void afs_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 afs_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, &afs_RXFSStoreStatus, (4 + 6) * 4, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSTORESTATUS); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); xdr_encode_AFS_StoreStatus(&bp, op->setattr.attr); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.GetVolumeStatus */ static int afs_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, 12 * 4); 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_AFSFetchVolumeStatus(&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; } /* * FS.GetVolumeStatus operation type */ static const struct afs_call_type afs_RXFSGetVolumeStatus = { .name = "FS.GetVolumeStatus", .op = afs_FS_GetVolumeStatus, .deliver = afs_deliver_fs_get_volume_status, .destructor = afs_flat_call_destructor, }; /* * fetch the status of a volume */ void afs_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, &afs_RXFSGetVolumeStatus, 2 * 4, max(12 * 4, AFSOPAQUEMAX + 1)); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; bp[0] = htonl(FSGETVOLUMESTATUS); bp[1] = htonl(vp->fid.vid); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock */ static int afs_deliver_fs_xxxx_lock(struct afs_call *call) { struct afs_operation *op = call->op; 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_AFSVolSync(&bp, &op->volsync); _leave(" = 0 [done]"); return 0; } /* * FS.SetLock operation type */ static const struct afs_call_type afs_RXFSSetLock = { .name = "FS.SetLock", .op = afs_FS_SetLock, .deliver = afs_deliver_fs_xxxx_lock, .done = afs_lock_op_done, .destructor = afs_flat_call_destructor, }; /* * FS.ExtendLock operation type */ static const struct afs_call_type afs_RXFSExtendLock = { .name = "FS.ExtendLock", .op = afs_FS_ExtendLock, .deliver = afs_deliver_fs_xxxx_lock, .done = afs_lock_op_done, .destructor = afs_flat_call_destructor, }; /* * FS.ReleaseLock operation type */ static const struct afs_call_type afs_RXFSReleaseLock = { .name = "FS.ReleaseLock", .op = afs_FS_ReleaseLock, .deliver = afs_deliver_fs_xxxx_lock, .destructor = afs_flat_call_destructor, }; /* * Set a lock on a file */ void afs_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, &afs_RXFSSetLock, 5 * 4, 6 * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSSETLOCK); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); *bp++ = htonl(op->lock.type); call->fid = vp->fid; 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 afs_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, &afs_RXFSExtendLock, 4 * 4, 6 * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSEXTENDLOCK); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * release a lock on a file */ void afs_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, &afs_RXFSReleaseLock, 4 * 4, 6 * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSRELEASELOCK); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * Deliver reply data to an FS.GiveUpAllCallBacks operation. */ static int afs_deliver_fs_give_up_all_callbacks(struct afs_call *call) { return afs_transfer_reply(call); } /* * FS.GiveUpAllCallBacks operation type */ static const struct afs_call_type afs_RXFSGiveUpAllCallBacks = { .name = "FS.GiveUpAllCallBacks", .op = afs_FS_GiveUpAllCallBacks, .deliver = afs_deliver_fs_give_up_all_callbacks, .destructor = afs_flat_call_destructor, }; /* * Flush all the callbacks we have on a server. */ int afs_fs_give_up_all_callbacks(struct afs_net *net, struct afs_server *server, struct afs_address *addr, struct key *key) { struct afs_call *call; __be32 *bp; int ret; _enter(""); call = afs_alloc_flat_call(net, &afs_RXFSGiveUpAllCallBacks, 1 * 4, 0); if (!call) return -ENOMEM; call->key = key; call->peer = rxrpc_kernel_get_peer(addr->peer); call->service_id = server->service_id; /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSGIVEUPALLCALLBACKS); call->server = afs_use_server(server, afs_server_trace_give_up_cb); afs_make_call(call, GFP_NOFS); afs_wait_for_call_to_complete(call); ret = call->error; if (call->responded) set_bit(AFS_SERVER_FL_RESPONDING, &server->flags); afs_put_call(call); return ret; } /* * Deliver reply data to an FS.GetCapabilities operation. */ static int afs_deliver_fs_get_capabilities(struct afs_call *call) { u32 count; int ret; _enter("{%u,%zu}", call->unmarshall, iov_iter_count(call->iter)); switch (call->unmarshall) { case 0: afs_extract_to_tmp(call); call->unmarshall++; fallthrough; /* Extract the capabilities word count */ case 1: ret = afs_extract_data(call, true); if (ret < 0) return ret; count = ntohl(call->tmp); call->count = count; call->count2 = count; if (count == 0) { call->unmarshall = 4; call->tmp = 0; break; } /* Extract the first word of the capabilities to call->tmp */ afs_extract_to_tmp(call); call->unmarshall++; fallthrough; case 2: ret = afs_extract_data(call, false); if (ret < 0) return ret; afs_extract_discard(call, (count - 1) * sizeof(__be32)); call->unmarshall++; fallthrough; /* Extract remaining capabilities words */ case 3: ret = afs_extract_data(call, false); if (ret < 0) return ret; call->unmarshall++; break; } _leave(" = 0 [done]"); return 0; } static void afs_fs_get_capabilities_destructor(struct afs_call *call) { afs_put_endpoint_state(call->probe, afs_estate_trace_put_getcaps); afs_flat_call_destructor(call); } /* * FS.GetCapabilities operation type */ static const struct afs_call_type afs_RXFSGetCapabilities = { .name = "FS.GetCapabilities", .op = afs_FS_GetCapabilities, .deliver = afs_deliver_fs_get_capabilities, .done = afs_fileserver_probe_result, .destructor = afs_fs_get_capabilities_destructor, }; /* * Probe a fileserver for the capabilities that it supports. This RPC can * reply with up to 196 words. The operation is asynchronous and if we managed * to allocate a call, true is returned the result is delivered through the * ->done() - otherwise we return false to indicate we didn't even try. */ bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server, struct afs_endpoint_state *estate, unsigned int addr_index, struct key *key) { struct afs_call *call; __be32 *bp; _enter(""); call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4); if (!call) return false; call->key = key; call->server = afs_use_server(server, afs_server_trace_get_caps); call->peer = rxrpc_kernel_get_peer(estate->addresses->addrs[addr_index].peer); call->probe = afs_get_endpoint_state(estate, afs_estate_trace_get_getcaps); call->probe_index = addr_index; call->service_id = server->service_id; call->upgrade = true; call->async = true; call->max_lifespan = AFS_PROBE_MAX_LIFESPAN; /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSGETCAPABILITIES); trace_afs_make_fs_call(call, NULL); afs_make_call(call, GFP_NOFS); afs_put_call(call); return true; } /* * Deliver reply data to an FS.InlineBulkStatus call */ static int afs_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, 21 * sizeof(__be32)); 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_AFSFetchStatus(&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, 3 * sizeof(__be32)); 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_AFSCallBack(&bp, call, scb); call->count++; if (call->count < op->nr_files) goto more_cbs; afs_extract_to_buf(call, 6 * sizeof(__be32)); call->unmarshall++; fallthrough; case 5: ret = afs_extract_data(call, false); if (ret < 0) return ret; bp = call->buffer; /* Unfortunately, prior to OpenAFS-1.6, volsync here is filled * with rubbish. */ xdr_decode_AFSVolSync(&bp, NULL); call->unmarshall++; fallthrough; case 6: break; } _leave(" = 0 [done]"); return 0; } static void afs_done_fs_inline_bulk_status(struct afs_call *call) { if (call->error == -ECONNABORTED && call->abort_code == RX_INVALID_OPERATION) { set_bit(AFS_SERVER_FL_NO_IBULK, &call->server->flags); if (call->op) set_bit(AFS_VOLUME_MAYBE_NO_IBULK, &call->op->volume->flags); } } /* * FS.InlineBulkStatus operation type */ static const struct afs_call_type afs_RXFSInlineBulkStatus = { .name = "FS.InlineBulkStatus", .op = afs_FS_InlineBulkStatus, .deliver = afs_deliver_fs_inline_bulk_status, .done = afs_done_fs_inline_bulk_status, .destructor = afs_flat_call_destructor, }; /* * Fetch the status information for up to 50 files */ void afs_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; if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) { afs_op_set_error(op, -ENOTSUPP); return; } _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, &afs_RXFSInlineBulkStatus, (2 + op->nr_files * 3) * 4, 21 * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; *bp++ = htonl(FSINLINEBULKSTATUS); *bp++ = htonl(op->nr_files); *bp++ = htonl(dvp->fid.vid); *bp++ = htonl(dvp->fid.vnode); *bp++ = htonl(dvp->fid.unique); *bp++ = htonl(vp->fid.vid); *bp++ = htonl(vp->fid.vnode); *bp++ = htonl(vp->fid.unique); for (i = 0; i < op->nr_files - 2; i++) { *bp++ = htonl(op->more_files[i].fid.vid); *bp++ = htonl(op->more_files[i].fid.vnode); *bp++ = htonl(op->more_files[i].fid.unique); } call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_NOFS); } /* * deliver reply data to an FS.FetchACL */ static int afs_deliver_fs_fetch_acl(struct afs_call *call) { struct afs_operation *op = call->op; struct afs_vnode_param *vp = &op->file[0]; 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 returned data 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); acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL); if (!acl) return -ENOMEM; op->acl = acl; acl->size = call->count2; afs_extract_begin(call, acl->data, size); call->unmarshall++; fallthrough; /* extract the returned data */ case 2: ret = afs_extract_data(call, true); if (ret < 0) return ret; afs_extract_to_buf(call, (21 + 6) * 4); call->unmarshall++; fallthrough; /* extract the metadata */ case 3: ret = afs_extract_data(call, false); if (ret < 0) return ret; bp = call->buffer; xdr_decode_AFSFetchStatus(&bp, call, &vp->scb); xdr_decode_AFSVolSync(&bp, &op->volsync); call->unmarshall++; fallthrough; case 4: break; } _leave(" = 0 [done]"); return 0; } /* * FS.FetchACL operation type */ static const struct afs_call_type afs_RXFSFetchACL = { .name = "FS.FetchACL", .op = afs_FS_FetchACL, .deliver = afs_deliver_fs_fetch_acl, }; /* * Fetch the ACL for a file. */ void afs_fs_fetch_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, &afs_RXFSFetchACL, 16, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; bp[0] = htonl(FSFETCHACL); bp[1] = htonl(vp->fid.vid); bp[2] = htonl(vp->fid.vnode); bp[3] = htonl(vp->fid.unique); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_KERNEL); } /* * FS.StoreACL operation type */ static const struct afs_call_type afs_RXFSStoreACL = { .name = "FS.StoreACL", .op = afs_FS_StoreACL, .deliver = afs_deliver_fs_file_status_and_vol, .destructor = afs_flat_call_destructor, }; /* * Fetch the ACL for a file. */ void afs_fs_store_acl(struct afs_operation *op) { struct afs_vnode_param *vp = &op->file[0]; struct afs_call *call; const 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, &afs_RXFSStoreACL, 5 * 4 + size, (21 + 6) * 4); if (!call) return afs_op_nomem(op); /* marshall the parameters */ bp = call->request; bp[0] = htonl(FSSTOREACL); bp[1] = htonl(vp->fid.vid); bp[2] = htonl(vp->fid.vnode); bp[3] = htonl(vp->fid.unique); bp[4] = htonl(acl->size); memcpy(&bp[5], acl->data, acl->size); if (acl->size != size) memset((void *)&bp[5] + acl->size, 0, size - acl->size); call->fid = vp->fid; trace_afs_make_fs_call(call, &vp->fid); afs_make_op_call(op, call, GFP_KERNEL); }
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