diff --git a/fs/afs/afs.h b/fs/afs/afs.h index b94d0edc2b78..a670bca6d3ba 100644 --- a/fs/afs/afs.h +++ b/fs/afs/afs.h @@ -67,10 +67,14 @@ typedef enum { } afs_callback_type_t; struct afs_callback { - struct afs_fid fid; /* file identifier */ - unsigned version; /* callback version */ - unsigned expiry; /* time at which expires */ - afs_callback_type_t type; /* type of callback */ + unsigned version; /* Callback version */ + unsigned expiry; /* Time at which expires */ + afs_callback_type_t type; /* Type of callback */ +}; + +struct afs_callback_break { + struct afs_fid fid; /* File identifier */ + struct afs_callback cb; /* Callback details */ }; #define AFSCBMAX 50 /* maximum callbacks transferred per bulk op */ @@ -123,21 +127,22 @@ typedef u32 afs_access_t; * AFS file status information */ struct afs_file_status { + u64 size; /* file size */ + afs_dataversion_t data_version; /* current data version */ + time_t mtime_client; /* last time client changed data */ + time_t mtime_server; /* last time server changed data */ unsigned if_version; /* interface version */ #define AFS_FSTATUS_VERSION 1 + unsigned abort_code; /* Abort if bulk-fetching this failed */ afs_file_type_t type; /* file type */ unsigned nlink; /* link count */ - u64 size; /* file size */ - afs_dataversion_t data_version; /* current data version */ u32 author; /* author ID */ kuid_t owner; /* owner ID */ kgid_t group; /* group ID */ afs_access_t caller_access; /* access rights for authenticated caller */ afs_access_t anon_access; /* access rights for unauthenticated caller */ umode_t mode; /* UNIX mode */ - time_t mtime_client; /* last time client changed data */ - time_t mtime_server; /* last time server changed data */ s32 lock_count; /* file lock count (0=UNLK -1=WRLCK +ve=#RDLCK */ }; diff --git a/fs/afs/afs_fs.h b/fs/afs/afs_fs.h index d47b6d01e4c0..ddfa88a7a9c0 100644 --- a/fs/afs/afs_fs.h +++ b/fs/afs/afs_fs.h @@ -31,10 +31,12 @@ enum AFS_FS_Operations { FSGETVOLUMEINFO = 148, /* AFS Get information about a volume */ FSGETVOLUMESTATUS = 149, /* AFS Get volume status information */ FSGETROOTVOLUME = 151, /* AFS Get root volume name */ + FSBULKSTATUS = 155, /* AFS Fetch multiple file statuses */ FSSETLOCK = 156, /* AFS Request a file lock */ FSEXTENDLOCK = 157, /* AFS Extend a file lock */ FSRELEASELOCK = 158, /* AFS Release a file lock */ FSLOOKUP = 161, /* AFS lookup file in directory */ + FSINLINEBULKSTATUS = 65536, /* AFS Fetch multiple file statuses with inline errors */ FSFETCHDATA64 = 65537, /* AFS Fetch file data */ FSSTOREDATA64 = 65538, /* AFS Store file data */ FSGIVEUPALLCALLBACKS = 65539, /* AFS Give up all outstanding callbacks on a server */ diff --git a/fs/afs/callback.c b/fs/afs/callback.c index bf082c719645..6049ca837498 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -187,7 +187,7 @@ static void afs_break_one_callback(struct afs_server *server, * allow the fileserver to break callback promises */ void afs_break_callbacks(struct afs_server *server, size_t count, - struct afs_callback callbacks[]) + struct afs_callback_break *callbacks) { _enter("%p,%zu,", server, count); @@ -199,9 +199,9 @@ void afs_break_callbacks(struct afs_server *server, size_t count, callbacks->fid.vid, callbacks->fid.vnode, callbacks->fid.unique, - callbacks->version, - callbacks->expiry, - callbacks->type + callbacks->cb.version, + callbacks->cb.expiry, + callbacks->cb.type ); afs_break_one_callback(server, &callbacks->fid); } diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c index 83ff283979a4..fa07f83e9f29 100644 --- a/fs/afs/cmservice.c +++ b/fs/afs/cmservice.c @@ -178,8 +178,8 @@ static void SRXAFSCB_CallBack(struct work_struct *work) */ static int afs_deliver_cb_callback(struct afs_call *call) { + struct afs_callback_break *cb; struct sockaddr_rxrpc srx; - struct afs_callback *cb; struct afs_server *server; __be32 *bp; int ret, loop; @@ -218,7 +218,7 @@ static int afs_deliver_cb_callback(struct afs_call *call) _debug("unmarshall FID array"); call->request = kcalloc(call->count, - sizeof(struct afs_callback), + sizeof(struct afs_callback_break), GFP_KERNEL); if (!call->request) return -ENOMEM; @@ -229,7 +229,7 @@ static int afs_deliver_cb_callback(struct afs_call *call) cb->fid.vid = ntohl(*bp++); cb->fid.vnode = ntohl(*bp++); cb->fid.unique = ntohl(*bp++); - cb->type = AFSCM_CB_UNTYPED; + cb->cb.type = AFSCM_CB_UNTYPED; } call->offset = 0; @@ -260,9 +260,9 @@ static int afs_deliver_cb_callback(struct afs_call *call) cb = call->request; bp = call->buffer; for (loop = call->count2; loop > 0; loop--, cb++) { - cb->version = ntohl(*bp++); - cb->expiry = ntohl(*bp++); - cb->type = ntohl(*bp++); + cb->cb.version = ntohl(*bp++); + cb->cb.expiry = ntohl(*bp++); + cb->cb.type = ntohl(*bp++); } call->offset = 0; diff --git a/fs/afs/dir.c b/fs/afs/dir.c index ba2b458b36d1..27c5231e89e7 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -29,8 +29,10 @@ static int afs_readdir(struct file *file, struct dir_context *ctx); static int afs_d_revalidate(struct dentry *dentry, unsigned int flags); static int afs_d_delete(const struct dentry *dentry); static void afs_d_release(struct dentry *dentry); -static int afs_lookup_filldir(struct dir_context *ctx, const char *name, int nlen, +static int afs_lookup_one_filldir(struct dir_context *ctx, const char *name, int nlen, loff_t fpos, u64 ino, unsigned dtype); +static int afs_lookup_filldir(struct dir_context *ctx, const char *name, int nlen, + loff_t fpos, u64 ino, unsigned dtype); static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl); static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode); @@ -134,11 +136,22 @@ struct afs_dir_page { union afs_dir_block blocks[PAGE_SIZE / sizeof(union afs_dir_block)]; }; +struct afs_lookup_one_cookie { + struct dir_context ctx; + struct qstr name; + bool found; + struct afs_fid fid; +}; + struct afs_lookup_cookie { - struct dir_context ctx; - struct afs_fid fid; - struct qstr name; - int found; + struct dir_context ctx; + struct qstr name; + bool found; + bool one_only; + unsigned short nr_fids; + struct afs_file_status *statuses; + struct afs_callback *callbacks; + struct afs_fid fids[50]; }; /* @@ -330,7 +343,8 @@ static int afs_dir_iterate_block(struct dir_context *ctx, /* found the next entry */ if (!dir_emit(ctx, dire->u.name, nlen, ntohl(dire->u.vnode), - ctx->actor == afs_lookup_filldir ? + (ctx->actor == afs_lookup_filldir || + ctx->actor == afs_lookup_one_filldir)? ntohl(dire->u.unique) : DT_UNKNOWN)) { _leave(" = 0 [full]"); return 0; @@ -414,15 +428,15 @@ static int afs_readdir(struct file *file, struct dir_context *ctx) } /* - * search the directory for a name + * Search the directory for a single name * - if afs_dir_iterate_block() spots this function, it'll pass the FID * uniquifier through dtype */ -static int afs_lookup_filldir(struct dir_context *ctx, const char *name, - int nlen, loff_t fpos, u64 ino, unsigned dtype) +static int afs_lookup_one_filldir(struct dir_context *ctx, const char *name, + int nlen, loff_t fpos, u64 ino, unsigned dtype) { - struct afs_lookup_cookie *cookie = - container_of(ctx, struct afs_lookup_cookie, ctx); + struct afs_lookup_one_cookie *cookie = + container_of(ctx, struct afs_lookup_one_cookie, ctx); _enter("{%s,%u},%s,%u,,%llu,%u", cookie->name.name, cookie->name.len, name, nlen, @@ -447,15 +461,15 @@ static int afs_lookup_filldir(struct dir_context *ctx, const char *name, } /* - * do a lookup in a directory + * Do a lookup of a single name in a directory * - just returns the FID the dentry name maps to if found */ -static int afs_do_lookup(struct inode *dir, struct dentry *dentry, - struct afs_fid *fid, struct key *key) +static int afs_do_lookup_one(struct inode *dir, struct dentry *dentry, + struct afs_fid *fid, struct key *key) { struct afs_super_info *as = dir->i_sb->s_fs_info; - struct afs_lookup_cookie cookie = { - .ctx.actor = afs_lookup_filldir, + struct afs_lookup_one_cookie cookie = { + .ctx.actor = afs_lookup_one_filldir, .name = dentry->d_name, .fid.vid = as->volume->vid }; @@ -481,6 +495,212 @@ static int afs_do_lookup(struct inode *dir, struct dentry *dentry, return 0; } +/* + * search the directory for a name + * - if afs_dir_iterate_block() spots this function, it'll pass the FID + * uniquifier through dtype + */ +static int afs_lookup_filldir(struct dir_context *ctx, const char *name, + int nlen, loff_t fpos, u64 ino, unsigned dtype) +{ + struct afs_lookup_cookie *cookie = + container_of(ctx, struct afs_lookup_cookie, ctx); + int ret; + + _enter("{%s,%u},%s,%u,,%llu,%u", + cookie->name.name, cookie->name.len, name, nlen, + (unsigned long long) ino, dtype); + + /* insanity checks first */ + BUILD_BUG_ON(sizeof(union afs_dir_block) != 2048); + BUILD_BUG_ON(sizeof(union afs_dirent) != 32); + + if (cookie->found) { + if (cookie->nr_fids < 50) { + cookie->fids[cookie->nr_fids].vnode = ino; + cookie->fids[cookie->nr_fids].unique = dtype; + cookie->nr_fids++; + } + } else if (cookie->name.len == nlen && + memcmp(cookie->name.name, name, nlen) == 0) { + cookie->fids[0].vnode = ino; + cookie->fids[0].unique = dtype; + cookie->found = 1; + if (cookie->one_only) + return -1; + } + + ret = cookie->nr_fids >= 50 ? -1 : 0; + _leave(" = %d", ret); + return ret; +} + +/* + * Do a lookup in a directory. We make use of bulk lookup to query a slew of + * files in one go and create inodes for them. The inode of the file we were + * asked for is returned. + */ +static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, + struct key *key) +{ + struct afs_lookup_cookie *cookie; + struct afs_cb_interest *cbi = NULL; + struct afs_super_info *as = dir->i_sb->s_fs_info; + struct afs_iget_data data; + struct afs_fs_cursor fc; + struct afs_vnode *dvnode = AFS_FS_I(dir); + struct inode *inode = NULL; + int ret, i; + + _enter("{%lu},%p{%pd},", dir->i_ino, dentry, dentry); + + cookie = kzalloc(sizeof(struct afs_lookup_cookie), GFP_KERNEL); + if (!cookie) + return ERR_PTR(-ENOMEM); + + cookie->ctx.actor = afs_lookup_filldir; + cookie->name = dentry->d_name; + cookie->nr_fids = 1; /* slot 0 is saved for the fid we actually want */ + + read_seqlock_excl(&dvnode->cb_lock); + if (dvnode->cb_interest && + dvnode->cb_interest->server && + test_bit(AFS_SERVER_FL_NO_IBULK, &dvnode->cb_interest->server->flags)) + cookie->one_only = true; + read_sequnlock_excl(&dvnode->cb_lock); + + for (i = 0; i < 50; i++) + cookie->fids[i].vid = as->volume->vid; + + /* search the directory */ + ret = afs_dir_iterate(dir, &cookie->ctx, key); + if (ret < 0) { + inode = ERR_PTR(ret); + goto out; + } + + inode = ERR_PTR(-ENOENT); + if (!cookie->found) + goto out; + + /* Check to see if we already have an inode for the primary fid. */ + data.volume = dvnode->volume; + data.fid = cookie->fids[0]; + inode = ilookup5(dir->i_sb, cookie->fids[0].vnode, afs_iget5_test, &data); + if (inode) + goto out; + + /* Need space for examining all the selected files */ + inode = ERR_PTR(-ENOMEM); + cookie->statuses = kcalloc(cookie->nr_fids, sizeof(struct afs_file_status), + GFP_KERNEL); + if (!cookie->statuses) + goto out; + + cookie->callbacks = kcalloc(cookie->nr_fids, sizeof(struct afs_callback), + GFP_KERNEL); + if (!cookie->callbacks) + goto out_s; + + /* Try FS.InlineBulkStatus first. Abort codes for the individual + * lookups contained therein are stored in the reply without aborting + * the whole operation. + */ + if (cookie->one_only) + goto no_inline_bulk_status; + + inode = ERR_PTR(-ERESTARTSYS); + if (afs_begin_vnode_operation(&fc, dvnode, key)) { + while (afs_select_fileserver(&fc)) { + if (test_bit(AFS_SERVER_FL_NO_IBULK, + &fc.cbi->server->flags)) { + fc.ac.abort_code = RX_INVALID_OPERATION; + fc.ac.error = -ECONNABORTED; + break; + } + afs_fs_inline_bulk_status(&fc, + afs_v2net(dvnode), + cookie->fids, + cookie->statuses, + cookie->callbacks, + cookie->nr_fids, NULL); + } + + if (fc.ac.error == 0) + cbi = afs_get_cb_interest(fc.cbi); + if (fc.ac.abort_code == RX_INVALID_OPERATION) + set_bit(AFS_SERVER_FL_NO_IBULK, &fc.cbi->server->flags); + inode = ERR_PTR(afs_end_vnode_operation(&fc)); + } + + if (!IS_ERR(inode)) + goto success; + if (fc.ac.abort_code != RX_INVALID_OPERATION) + goto out_c; + +no_inline_bulk_status: + /* We could try FS.BulkStatus next, but this aborts the entire op if + * any of the lookups fails - so, for the moment, revert to + * FS.FetchStatus for just the primary fid. + */ + cookie->nr_fids = 1; + inode = ERR_PTR(-ERESTARTSYS); + if (afs_begin_vnode_operation(&fc, dvnode, key)) { + while (afs_select_fileserver(&fc)) { + afs_fs_fetch_status(&fc, + afs_v2net(dvnode), + cookie->fids, + cookie->statuses, + cookie->callbacks, + NULL); + } + + if (fc.ac.error == 0) + cbi = afs_get_cb_interest(fc.cbi); + inode = ERR_PTR(afs_end_vnode_operation(&fc)); + } + + if (IS_ERR(inode)) + goto out_c; + + for (i = 0; i < cookie->nr_fids; i++) + cookie->statuses[i].abort_code = 0; + +success: + /* Turn all the files into inodes and save the first one - which is the + * one we actually want. + */ + if (cookie->statuses[0].abort_code != 0) + inode = ERR_PTR(afs_abort_to_error(cookie->statuses[0].abort_code)); + + for (i = 0; i < cookie->nr_fids; i++) { + struct inode *ti; + + if (cookie->statuses[i].abort_code != 0) + continue; + + ti = afs_iget(dir->i_sb, key, &cookie->fids[i], + &cookie->statuses[i], + &cookie->callbacks[i], + cbi); + if (i == 0) { + inode = ti; + } else { + if (!IS_ERR(ti)) + iput(ti); + } + } + +out_c: + afs_put_cb_interest(afs_v2net(dvnode), cbi); + kfree(cookie->callbacks); +out_s: + kfree(cookie->statuses); +out: + kfree(cookie); + return inode; +} + /* * Probe to see if a cell may exist. This prevents positive dentries from * being created unnecessarily. @@ -516,8 +736,7 @@ static int afs_probe_cell_name(struct dentry *dentry) * Try to auto mount the mountpoint with pseudo directory, if the autocell * operation is setted. */ -static struct inode *afs_try_auto_mntpt(struct dentry *dentry, - struct inode *dir, struct afs_fid *fid) +static struct inode *afs_try_auto_mntpt(struct dentry *dentry, struct inode *dir) { struct afs_vnode *vnode = AFS_FS_I(dir); struct inode *inode; @@ -539,7 +758,6 @@ static struct inode *afs_try_auto_mntpt(struct dentry *dentry, goto out; } - *fid = AFS_FS_I(inode)->fid; _leave("= %p", inode); return inode; @@ -554,16 +772,13 @@ out: static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags) { - struct afs_vnode *vnode; - struct afs_fid fid; + struct afs_vnode *dvnode = AFS_FS_I(dir); struct inode *inode; struct key *key; int ret; - vnode = AFS_FS_I(dir); - _enter("{%x:%u},%p{%pd},", - vnode->fid.vid, vnode->fid.vnode, dentry, dentry); + dvnode->fid.vid, dvnode->fid.vnode, dentry, dentry); ASSERTCMP(d_inode(dentry), ==, NULL); @@ -572,28 +787,29 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry, return ERR_PTR(-ENAMETOOLONG); } - if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) { + if (test_bit(AFS_VNODE_DELETED, &dvnode->flags)) { _leave(" = -ESTALE"); return ERR_PTR(-ESTALE); } - key = afs_request_key(vnode->volume->cell); + key = afs_request_key(dvnode->volume->cell); if (IS_ERR(key)) { _leave(" = %ld [key]", PTR_ERR(key)); return ERR_CAST(key); } - ret = afs_validate(vnode, key); + ret = afs_validate(dvnode, key); if (ret < 0) { key_put(key); _leave(" = %d [val]", ret); return ERR_PTR(ret); } - ret = afs_do_lookup(dir, dentry, &fid, key); - if (ret < 0) { + inode = afs_do_lookup(dir, dentry, key); + if (IS_ERR(inode)) { + ret = PTR_ERR(inode); if (ret == -ENOENT) { - inode = afs_try_auto_mntpt(dentry, dir, &fid); + inode = afs_try_auto_mntpt(dentry, dir); if (!IS_ERR(inode)) { key_put(key); goto success; @@ -611,10 +827,9 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry, _leave(" = %d [do]", ret); return ERR_PTR(ret); } - dentry->d_fsdata = (void *)(unsigned long) vnode->status.data_version; + dentry->d_fsdata = (void *)(unsigned long)dvnode->status.data_version; /* instantiate the dentry */ - inode = afs_iget(dir->i_sb, key, &fid, NULL, NULL, NULL); key_put(key); if (IS_ERR(inode)) { _leave(" = %ld", PTR_ERR(inode)); @@ -623,9 +838,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry, success: d_add(dentry, inode); - _leave(" = 0 { vn=%u u=%u } -> { ino=%lu v=%u }", - fid.vnode, - fid.unique, + _leave(" = 0 { ino=%lu v=%u }", d_inode(dentry)->i_ino, d_inode(dentry)->i_generation); @@ -639,7 +852,6 @@ static struct dentry *afs_dynroot_lookup(struct inode *dir, struct dentry *dentr unsigned int flags) { struct afs_vnode *vnode; - struct afs_fid fid; struct inode *inode; int ret; @@ -654,7 +866,7 @@ static struct dentry *afs_dynroot_lookup(struct inode *dir, struct dentry *dentr return ERR_PTR(-ENAMETOOLONG); } - inode = afs_try_auto_mntpt(dentry, dir, &fid); + inode = afs_try_auto_mntpt(dentry, dir); if (IS_ERR(inode)) { ret = PTR_ERR(inode); if (ret == -ENOENT) { @@ -736,7 +948,7 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags) _debug("dir modified"); /* search the directory for this vnode */ - ret = afs_do_lookup(&dir->vfs_inode, dentry, &fid, key); + ret = afs_do_lookup_one(&dir->vfs_inode, dentry, &fid, key); switch (ret) { case 0: /* the filename maps to something */ diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index 88ec38c2d83c..75554ee98d02 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -94,7 +94,7 @@ static void xdr_decode_AFSFetchStatus(const __be32 **_bp, data_version |= (u64) ntohl(*bp++) << 32; EXTRACT(status->lock_count); size |= (u64) ntohl(*bp++) << 32; - bp++; /* spare 4 */ + EXTRACT(status->abort_code); /* spare 4 */ *_bp = bp; if (size != status->size) { @@ -274,7 +274,7 @@ static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, /* * deliver reply data to an FS.FetchStatus */ -static int afs_deliver_fs_fetch_status(struct afs_call *call) +static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call) { struct afs_vnode *vnode = call->reply[0]; const __be32 *bp; @@ -300,10 +300,10 @@ static int afs_deliver_fs_fetch_status(struct afs_call *call) /* * FS.FetchStatus operation type */ -static const struct afs_call_type afs_RXFSFetchStatus = { - .name = "FS.FetchStatus", +static const struct afs_call_type afs_RXFSFetchStatus_vnode = { + .name = "FS.FetchStatus(vnode)", .op = afs_FS_FetchStatus, - .deliver = afs_deliver_fs_fetch_status, + .deliver = afs_deliver_fs_fetch_status_vnode, .destructor = afs_flat_call_destructor, }; @@ -320,7 +320,8 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_volsync *volsy _enter(",%x,{%x:%u},,", key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode); - call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); + call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode, + 16, (21 + 3 + 6) * 4); if (!call) { fc->ac.error = -ENOMEM; return -ENOMEM; @@ -1947,3 +1948,262 @@ int afs_fs_get_capabilities(struct afs_net *net, trace_afs_make_fs_call(call, NULL); return afs_make_call(ac, call, GFP_NOFS, false); } + +/* + * Deliver reply data to an FS.FetchStatus with no vnode. + */ +static int afs_deliver_fs_fetch_status(struct afs_call *call) +{ + struct afs_file_status *status = call->reply[1]; + struct afs_callback *callback = call->reply[2]; + struct afs_volsync *volsync = call->reply[3]; + struct afs_vnode *vnode = call->reply[0]; + const __be32 *bp; + int ret; + + ret = afs_transfer_reply(call); + if (ret < 0) + return ret; + + _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode); + + /* unmarshall the reply once we've received all of it */ + bp = call->buffer; + xdr_decode_AFSFetchStatus(&bp, status, vnode, NULL); + callback[call->count].version = ntohl(bp[0]); + callback[call->count].expiry = ntohl(bp[1]); + callback[call->count].type = ntohl(bp[2]); + if (vnode) + xdr_decode_AFSCallBack(call, vnode, &bp); + else + bp += 3; + if (volsync) + xdr_decode_AFSVolSync(&bp, 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 fid without needing a vnode handle. + */ +int afs_fs_fetch_status(struct afs_fs_cursor *fc, + struct afs_net *net, + struct afs_fid *fid, + struct afs_file_status *status, + struct afs_callback *callback, + struct afs_volsync *volsync) +{ + struct afs_call *call; + __be32 *bp; + + _enter(",%x,{%x:%u},,", + key_serial(fc->key), fid->vid, fid->vnode); + + call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); + if (!call) { + fc->ac.error = -ENOMEM; + return -ENOMEM; + } + + call->key = fc->key; + call->reply[0] = NULL; /* vnode for fid[0] */ + call->reply[1] = status; + call->reply[2] = callback; + call->reply[3] = volsync; + + /* marshall the parameters */ + bp = call->request; + bp[0] = htonl(FSFETCHSTATUS); + bp[1] = htonl(fid->vid); + bp[2] = htonl(fid->vnode); + bp[3] = htonl(fid->unique); + + call->cb_break = fc->cb_break; + afs_use_fs_server(call, fc->cbi); + trace_afs_make_fs_call(call, fid); + return afs_make_call(&fc->ac, call, GFP_NOFS, false); +} + +/* + * Deliver reply data to an FS.InlineBulkStatus call + */ +static int afs_deliver_fs_inline_bulk_status(struct afs_call *call) +{ + struct afs_file_status *statuses; + struct afs_callback *callbacks; + struct afs_vnode *vnode = call->reply[0]; + const __be32 *bp; + u32 tmp; + int ret; + + _enter("{%u}", call->unmarshall); + + switch (call->unmarshall) { + case 0: + call->offset = 0; + call->unmarshall++; + + /* Extract the file status count and array in two steps */ + case 1: + _debug("extract status count"); + ret = afs_extract_data(call, &call->tmp, 4, true); + if (ret < 0) + return ret; + + tmp = ntohl(call->tmp); + _debug("status count: %u/%u", tmp, call->count2); + if (tmp != call->count2) + return -EBADMSG; + + call->count = 0; + call->unmarshall++; + more_counts: + call->offset = 0; + + case 2: + _debug("extract status array %u", call->count); + ret = afs_extract_data(call, call->buffer, 21 * 4, true); + if (ret < 0) + return ret; + + bp = call->buffer; + statuses = call->reply[1]; + xdr_decode_AFSFetchStatus(&bp, &statuses[call->count], + call->count == 0 ? vnode : NULL, + NULL); + + call->count++; + if (call->count < call->count2) + goto more_counts; + + call->count = 0; + call->unmarshall++; + call->offset = 0; + + /* Extract the callback count and array in two steps */ + case 3: + _debug("extract CB count"); + ret = afs_extract_data(call, &call->tmp, 4, true); + if (ret < 0) + return ret; + + tmp = ntohl(call->tmp); + _debug("CB count: %u", tmp); + if (tmp != call->count2) + return -EBADMSG; + call->count = 0; + call->unmarshall++; + more_cbs: + call->offset = 0; + + case 4: + _debug("extract CB array"); + ret = afs_extract_data(call, call->buffer, 3 * 4, true); + if (ret < 0) + return ret; + + _debug("unmarshall CB array"); + bp = call->buffer; + callbacks = call->reply[2]; + callbacks[call->count].version = ntohl(bp[0]); + callbacks[call->count].expiry = ntohl(bp[1]); + callbacks[call->count].type = ntohl(bp[2]); + statuses = call->reply[1]; + if (call->count == 0 && vnode && statuses[0].abort_code == 0) + xdr_decode_AFSCallBack(call, vnode, &bp); + call->count++; + if (call->count < call->count2) + goto more_cbs; + + call->offset = 0; + call->unmarshall++; + + case 5: + ret = afs_extract_data(call, call->buffer, 6 * 4, false); + if (ret < 0) + return ret; + + bp = call->buffer; + if (call->reply[3]) + xdr_decode_AFSVolSync(&bp, call->reply[3]); + + call->offset = 0; + call->unmarshall++; + + case 6: + break; + } + + _leave(" = 0 [done]"); + return 0; +} + +/* + * 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, + .destructor = afs_flat_call_destructor, +}; + +/* + * Fetch the status information for up to 50 files + */ +int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc, + struct afs_net *net, + struct afs_fid *fids, + struct afs_file_status *statuses, + struct afs_callback *callbacks, + unsigned int nr_fids, + struct afs_volsync *volsync) +{ + struct afs_call *call; + __be32 *bp; + int i; + + _enter(",%x,{%x:%u},%u", + key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids); + + call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus, + (2 + nr_fids * 3) * 4, + 21 * 4); + if (!call) { + fc->ac.error = -ENOMEM; + return -ENOMEM; + } + + call->key = fc->key; + call->reply[0] = NULL; /* vnode for fid[0] */ + call->reply[1] = statuses; + call->reply[2] = callbacks; + call->reply[3] = volsync; + call->count2 = nr_fids; + + /* marshall the parameters */ + bp = call->request; + *bp++ = htonl(FSINLINEBULKSTATUS); + *bp++ = htonl(nr_fids); + for (i = 0; i < nr_fids; i++) { + *bp++ = htonl(fids[i].vid); + *bp++ = htonl(fids[i].vnode); + *bp++ = htonl(fids[i].unique); + } + + call->cb_break = fc->cb_break; + afs_use_fs_server(call, fc->cbi); + trace_afs_make_fs_call(call, &fids[0]); + return afs_make_call(&fc->ac, call, GFP_NOFS, false); +} diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 135192b7dc04..55b07e818400 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -363,6 +363,7 @@ struct afs_server { #define AFS_SERVER_FL_UPDATING 4 #define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */ #define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */ +#define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */ atomic_t usage; u32 addr_version; /* Address list version */ @@ -611,7 +612,7 @@ extern struct fscache_cookie_def afs_vnode_cache_index_def; */ extern void afs_init_callback_state(struct afs_server *); extern void afs_break_callback(struct afs_vnode *); -extern void afs_break_callbacks(struct afs_server *, size_t,struct afs_callback[]); +extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break*); extern int afs_register_server_cb_interest(struct afs_vnode *, struct afs_server_entry *); extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *); @@ -702,6 +703,13 @@ extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *, struct afs_addr_cursor *, struct key *); extern int afs_fs_get_capabilities(struct afs_net *, struct afs_server *, struct afs_addr_cursor *, struct key *); +extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *, + struct afs_fid *, struct afs_file_status *, + struct afs_callback *, unsigned int, + struct afs_volsync *); +extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *, + struct afs_fid *, struct afs_file_status *, + struct afs_callback *, struct afs_volsync *); /* * inode.c diff --git a/include/trace/events/afs.h b/include/trace/events/afs.h index 63815f66b274..0419b7e1e968 100644 --- a/include/trace/events/afs.h +++ b/include/trace/events/afs.h @@ -49,6 +49,7 @@ enum afs_fs_operation { afs_FS_ExtendLock = 157, /* AFS Extend a file lock */ afs_FS_ReleaseLock = 158, /* AFS Release a file lock */ afs_FS_Lookup = 161, /* AFS lookup file in directory */ + afs_FS_InlineBulkStatus = 65536, /* AFS Fetch multiple file statuses with errors */ afs_FS_FetchData64 = 65537, /* AFS Fetch file data */ afs_FS_StoreData64 = 65538, /* AFS Store file data */ afs_FS_GiveUpAllCallBacks = 65539, /* AFS Give up all our callbacks on a server */ @@ -93,6 +94,7 @@ enum afs_vl_operation { EM(afs_FS_ExtendLock, "FS.ExtendLock") \ EM(afs_FS_ReleaseLock, "FS.ReleaseLock") \ EM(afs_FS_Lookup, "FS.Lookup") \ + EM(afs_FS_InlineBulkStatus, "FS.InlineBulkStatus") \ EM(afs_FS_FetchData64, "FS.FetchData64") \ EM(afs_FS_StoreData64, "FS.StoreData64") \ EM(afs_FS_GiveUpAllCallBacks, "FS.GiveUpAllCallBacks") \