From b85f7d92d7bd7e3298159e8b1eed8cb8cbbb0348 Mon Sep 17 00:00:00 2001 From: Eric Van Hensbergen Date: Wed, 13 Jul 2011 19:12:18 -0500 Subject: net/9p: fix client code to fail more gracefully on protocol error There was a BUG_ON to protect against a bad id which could be dealt with more gracefully. Reported-by: Natalie Orlin Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index 9e3b0e640da1..81e667b6bbbd 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -280,7 +280,8 @@ struct p9_req_t *p9_tag_lookup(struct p9_client *c, u16 tag) * buffer to read the data into */ tag++; - BUG_ON(tag >= c->max_tag); + if(tag >= c->max_tag) + return NULL; row = tag / P9_ROW_MAXTAG; col = tag % P9_ROW_MAXTAG; -- cgit v1.2.1 From e660a828f017991468ce322742586e8ebb047ae6 Mon Sep 17 00:00:00 2001 From: Eric Van Hensbergen Date: Sun, 19 Jun 2011 16:38:21 -0500 Subject: 9p: clean up packet dump code Switch to generic kernel hexdump library and cleanup macros to be more consistent with the way we do normal debug prints. Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 39 ++++++++++++++++++++------------------- net/9p/protocol.c | 44 +++++++++++++++++--------------------------- 2 files changed, 37 insertions(+), 46 deletions(-) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index 81e667b6bbbd..332f97e0385e 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -750,7 +750,7 @@ static int p9_client_version(struct p9_client *c) err = p9pdu_readf(req->rc, c->proto_version, "ds", &msize, &version); if (err) { P9_DPRINTK(P9_DEBUG_9P, "version error %d\n", err); - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto error; } @@ -912,7 +912,7 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid, err = p9pdu_readf(req->rc, clnt->proto_version, "Q", &qid); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); p9_free_req(clnt, req); goto error; } @@ -972,7 +972,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, uint16_t nwname, err = p9pdu_readf(req->rc, clnt->proto_version, "R", &nwqids, &wqids); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); p9_free_req(clnt, req); goto clunk_fid; } @@ -1039,7 +1039,7 @@ int p9_client_open(struct p9_fid *fid, int mode) err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } @@ -1082,7 +1082,7 @@ int p9_client_create_dotl(struct p9_fid *ofid, char *name, u32 flags, u32 mode, err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", qid, &iounit); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } @@ -1127,7 +1127,7 @@ int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode, err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } @@ -1166,7 +1166,7 @@ int p9_client_symlink(struct p9_fid *dfid, char *name, char *symtgt, gid_t gid, err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } @@ -1319,11 +1319,12 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset, err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } P9_DPRINTK(P9_DEBUG_9P, "<<< RREAD count %d\n", count); + P9_DUMP_PKT(1, req->rc); if (!req->tc->pbuf_size) { if (data) { @@ -1387,7 +1388,7 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata, err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } @@ -1427,7 +1428,7 @@ struct p9_wstat *p9_client_stat(struct p9_fid *fid) err = p9pdu_readf(req->rc, clnt->proto_version, "wS", &ignored, ret); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); p9_free_req(clnt, req); goto error; } @@ -1478,7 +1479,7 @@ struct p9_stat_dotl *p9_client_getattr_dotl(struct p9_fid *fid, err = p9pdu_readf(req->rc, clnt->proto_version, "A", ret); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); p9_free_req(clnt, req); goto error; } @@ -1626,7 +1627,7 @@ int p9_client_statfs(struct p9_fid *fid, struct p9_rstatfs *sb) &sb->bsize, &sb->blocks, &sb->bfree, &sb->bavail, &sb->files, &sb->ffree, &sb->fsid, &sb->namelen); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); p9_free_req(clnt, req); goto error; } @@ -1702,7 +1703,7 @@ struct p9_fid *p9_client_xattrwalk(struct p9_fid *file_fid, } err = p9pdu_readf(req->rc, clnt->proto_version, "q", attr_size); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); p9_free_req(clnt, req); goto clunk_fid; } @@ -1781,7 +1782,7 @@ int p9_client_readdir(struct p9_fid *fid, char *data, u32 count, u64 offset) err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto free_and_error; } @@ -1818,7 +1819,7 @@ int p9_client_mknod_dotl(struct p9_fid *fid, char *name, int mode, err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto error; } P9_DPRINTK(P9_DEBUG_9P, "<<< RMKNOD qid %x.%llx.%x\n", qid->type, @@ -1849,7 +1850,7 @@ int p9_client_mkdir_dotl(struct p9_fid *fid, char *name, int mode, err = p9pdu_readf(req->rc, clnt->proto_version, "Q", qid); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto error; } P9_DPRINTK(P9_DEBUG_9P, "<<< RMKDIR qid %x.%llx.%x\n", qid->type, @@ -1884,7 +1885,7 @@ int p9_client_lock_dotl(struct p9_fid *fid, struct p9_flock *flock, u8 *status) err = p9pdu_readf(req->rc, clnt->proto_version, "b", status); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto error; } P9_DPRINTK(P9_DEBUG_9P, "<<< RLOCK status %i\n", *status); @@ -1917,7 +1918,7 @@ int p9_client_getlock_dotl(struct p9_fid *fid, struct p9_getlock *glock) &glock->start, &glock->length, &glock->proc_id, &glock->client_id); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto error; } P9_DPRINTK(P9_DEBUG_9P, "<<< RGETLOCK type %i start %lld length %lld " @@ -1945,7 +1946,7 @@ int p9_client_readlink(struct p9_fid *fid, char **target) err = p9pdu_readf(req->rc, clnt->proto_version, "s", target); if (err) { - p9pdu_dump(1, req->rc); + P9_DUMP_PKT(1, req->rc); goto error; } P9_DPRINTK(P9_DEBUG_9P, "<<< RREADLINK target %s\n", *target); diff --git a/net/9p/protocol.c b/net/9p/protocol.c index a873277cb996..df58375ea6b3 100644 --- a/net/9p/protocol.c +++ b/net/9p/protocol.c @@ -44,30 +44,24 @@ p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...); void p9pdu_dump(int way, struct p9_fcall *pdu) { - int i, n; - u8 *data = pdu->sdata; - int datalen = pdu->size; - char buf[255]; - int buflen = 255; - - i = n = 0; - if (datalen > (buflen-16)) - datalen = buflen-16; - while (i < datalen) { - n += scnprintf(buf + n, buflen - n, "%02x ", data[i]); - if (i%4 == 3) - n += scnprintf(buf + n, buflen - n, " "); - if (i%32 == 31) - n += scnprintf(buf + n, buflen - n, "\n"); - - i++; + int len = pdu->size; + + if ((p9_debug_level & P9_DEBUG_VPKT) != P9_DEBUG_VPKT) { + if ((p9_debug_level & P9_DEBUG_PKT) == P9_DEBUG_PKT) { + if (len > 32) + len = 32; + } else { + /* shouldn't happen */ + return; + } } - n += scnprintf(buf + n, buflen - n, "\n"); if (way) - P9_DPRINTK(P9_DEBUG_PKT, "[[[(%d) %s\n", datalen, buf); + print_hex_dump_bytes("[9P] ", DUMP_PREFIX_OFFSET, pdu->sdata, + len); else - P9_DPRINTK(P9_DEBUG_PKT, "]]](%d) %s\n", datalen, buf); + print_hex_dump_bytes("]9P[ ", DUMP_PREFIX_OFFSET, pdu->sdata, + len); } #else void @@ -610,7 +604,7 @@ int p9stat_read(char *buf, int len, struct p9_wstat *st, int proto_version) ret = p9pdu_readf(&fake_pdu, proto_version, "S", st); if (ret) { P9_DPRINTK(P9_DEBUG_9P, "<<< p9stat_read failed: %d\n", ret); - p9pdu_dump(1, &fake_pdu); + P9_DUMP_PKT(0, &fake_pdu); } return ret; @@ -632,11 +626,7 @@ int p9pdu_finalize(struct p9_fcall *pdu) err = p9pdu_writef(pdu, 0, "d", size); pdu->size = size; -#ifdef CONFIG_NET_9P_DEBUG - if ((p9_debug_level & P9_DEBUG_PKT) == P9_DEBUG_PKT) - p9pdu_dump(0, pdu); -#endif - + P9_DUMP_PKT(0, pdu); P9_DPRINTK(P9_DEBUG_9P, ">>> size=%d type: %d tag: %d\n", pdu->size, pdu->id, pdu->tag); @@ -669,7 +659,7 @@ int p9dirent_read(char *buf, int len, struct p9_dirent *dirent, &dirent->d_off, &dirent->d_type, &nameptr); if (ret) { P9_DPRINTK(P9_DEBUG_9P, "<<< p9dirent_read failed: %d\n", ret); - p9pdu_dump(1, &fake_pdu); + P9_DUMP_PKT(1, &fake_pdu); goto out; } -- cgit v1.2.1 From 114e6f3a5ede73d5b56e145f04680c61c3dd67c4 Mon Sep 17 00:00:00 2001 From: jvrao Date: Thu, 30 Jun 2011 23:18:39 +0000 Subject: Fix the size of receive buffer packing onto VirtIO ring. Signed-off-by: Venkateswararao Jujjuri " Reviewed-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/trans_virtio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/9p') diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 244e70742183..0ec5423b409e 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -367,7 +367,7 @@ req_retry_pinned: in += inp; } else { in = pack_sg_list(chan->sg, out, VIRTQUEUE_NUM, rdata, - client->msize); + req->rc->capacity); } err = virtqueue_add_buf(chan->vq, chan->sg, out, in, req->tc); -- cgit v1.2.1 From 7f781679dd596c8abde8336b4d0d166d6a4aad04 Mon Sep 17 00:00:00 2001 From: jvrao Date: Thu, 30 Jun 2011 23:18:41 +0000 Subject: VirtIO can transfer VIRTQUEUE_NUM of pages. Signed-off-by: Venkateswararao Jujjuri " Reviewed-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/trans_virtio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/9p') diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c index 0ec5423b409e..175b5135bdcf 100644 --- a/net/9p/trans_virtio.c +++ b/net/9p/trans_virtio.c @@ -592,7 +592,7 @@ static struct p9_trans_module p9_virtio_trans = { .close = p9_virtio_close, .request = p9_virtio_request, .cancel = p9_virtio_cancel, - .maxsize = PAGE_SIZE*16, + .maxsize = PAGE_SIZE*VIRTQUEUE_NUM, .pref = P9_TRANS_PREF_PAYLOAD_SEP, .def = 0, .owner = THIS_MODULE, -- cgit v1.2.1 From 5034990e28efb2d232ee82443a9edd62defd17ba Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Mon, 11 Jul 2011 16:40:58 +0000 Subject: fs/9p: Fid is not valid after a failed clunk. free the fid even in case of failed clunk. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index 332f97e0385e..7dd4e78878d6 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -1250,9 +1250,11 @@ int p9_client_clunk(struct p9_fid *fid) P9_DPRINTK(P9_DEBUG_9P, "<<< RCLUNK fid %d\n", fid->fid); p9_free_req(clnt, req); - p9_fid_destroy(fid); - error: + /* + * Fid is not valid even after a failed clunk + */ + p9_fid_destroy(fid); return err; } EXPORT_SYMBOL(p9_client_clunk); -- cgit v1.2.1 From 4d63055fa9657aa402da25575045c23f37c3da05 Mon Sep 17 00:00:00 2001 From: Prem Karat Date: Fri, 6 May 2011 18:35:32 +0530 Subject: fs/9p: Clean-up get_protocol_version() to use strcmp Signed-off-by: Prem Karat Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 47 +++++++++++++++++++++++++++++++++-------------- net/9p/mod.c | 4 ++-- 2 files changed, 35 insertions(+), 16 deletions(-) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index 7dd4e78878d6..431eaef697c7 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -72,23 +72,22 @@ inline int p9_is_proto_dotu(struct p9_client *clnt) EXPORT_SYMBOL(p9_is_proto_dotu); /* Interpret mount option for protocol version */ -static int get_protocol_version(const substring_t *name) +static int get_protocol_version(char *s) { int version = -EINVAL; - if (!strncmp("9p2000", name->from, name->to-name->from)) { + if (!strcmp(s, "9p2000")) { version = p9_proto_legacy; P9_DPRINTK(P9_DEBUG_9P, "Protocol version: Legacy\n"); - } else if (!strncmp("9p2000.u", name->from, name->to-name->from)) { + } else if (!strcmp(s, "9p2000.u")) { version = p9_proto_2000u; P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.u\n"); - } else if (!strncmp("9p2000.L", name->from, name->to-name->from)) { + } else if (!strcmp(s, "9p2000.L")) { version = p9_proto_2000L; P9_DPRINTK(P9_DEBUG_9P, "Protocol version: 9P2000.L\n"); - } else { - P9_DPRINTK(P9_DEBUG_ERROR, "Unknown protocol version %s. ", - name->from); - } + } else + printk(KERN_INFO "9p: Unknown protocol version %s.\n", s); + return version; } @@ -106,6 +105,7 @@ static int parse_opts(char *opts, struct p9_client *clnt) char *p; substring_t args[MAX_OPT_ARGS]; int option; + char *s; int ret = 0; clnt->proto_version = p9_proto_2000u; @@ -141,22 +141,41 @@ static int parse_opts(char *opts, struct p9_client *clnt) clnt->msize = option; break; case Opt_trans: - clnt->trans_mod = v9fs_get_trans_by_name(&args[0]); - if(clnt->trans_mod == NULL) { + s = match_strdup(&args[0]); + if (!s) { + ret = -ENOMEM; P9_DPRINTK(P9_DEBUG_ERROR, - "Could not find request transport: %s\n", - (char *) &args[0]); + "problem allocating copy of trans arg\n"); + goto free_and_return; + } + clnt->trans_mod = v9fs_get_trans_by_name(s); + if (clnt->trans_mod == NULL) { + printk(KERN_INFO + "9p: Could not find " + "request transport: %s\n", s); ret = -EINVAL; + kfree(s); goto free_and_return; } + kfree(s); break; case Opt_legacy: clnt->proto_version = p9_proto_legacy; break; case Opt_version: - ret = get_protocol_version(&args[0]); - if (ret == -EINVAL) + s = match_strdup(&args[0]); + if (!s) { + ret = -ENOMEM; + P9_DPRINTK(P9_DEBUG_ERROR, + "problem allocating copy of version arg\n"); + goto free_and_return; + } + ret = get_protocol_version(s); + if (ret == -EINVAL) { + kfree(s); goto free_and_return; + } + kfree(s); clnt->proto_version = ret; break; default: diff --git a/net/9p/mod.c b/net/9p/mod.c index 72c398275051..2664d1292291 100644 --- a/net/9p/mod.c +++ b/net/9p/mod.c @@ -80,14 +80,14 @@ EXPORT_SYMBOL(v9fs_unregister_trans); * @name: string identifying transport * */ -struct p9_trans_module *v9fs_get_trans_by_name(const substring_t *name) +struct p9_trans_module *v9fs_get_trans_by_name(char *s) { struct p9_trans_module *t, *found = NULL; spin_lock(&v9fs_trans_lock); list_for_each_entry(t, &v9fs_trans_list, list) - if (strncmp(t->name, name->from, name->to-name->from) == 0 && + if (strcmp(t->name, s) == 0 && try_module_get(t->owner)) { found = t; break; -- cgit v1.2.1 From 9e8fb38e7d7a00e5f63bbb331f0ea4c02286d5e6 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 28 Jun 2011 15:41:16 +0530 Subject: fs/9p: add 9P2000.L renameat operation renameat - change name of file or directory size[4] Trenameat tag[2] olddirfid[4] oldname[s] newdirfid[4] newname[s] size[4] Rrenameat tag[2] older Trename have the below request format size[4] Trename tag[2] fid[4] newdirfid[4] name[s] The rename message is used to change the name of a file, possibly moving it to a new directory. The rename opreation is actually a directory opertation and should ideally have olddirfid, if not we cannot represent the fid on server with anything other than name. We will have to derive the old directory name from fid in the Trename request. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 33 ++++++++++++++++++++++++++++++++- 1 file changed, 32 insertions(+), 1 deletion(-) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index 431eaef697c7..c4b77f383582 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -1666,7 +1666,8 @@ error: } EXPORT_SYMBOL(p9_client_statfs); -int p9_client_rename(struct p9_fid *fid, struct p9_fid *newdirfid, char *name) +int p9_client_rename(struct p9_fid *fid, + struct p9_fid *newdirfid, const char *name) { int err; struct p9_req_t *req; @@ -1693,6 +1694,36 @@ error: } EXPORT_SYMBOL(p9_client_rename); +int p9_client_renameat(struct p9_fid *olddirfid, const char *old_name, + struct p9_fid *newdirfid, const char *new_name) +{ + int err; + struct p9_req_t *req; + struct p9_client *clnt; + + err = 0; + clnt = olddirfid->clnt; + + P9_DPRINTK(P9_DEBUG_9P, ">>> TRENAMEAT olddirfid %d old name %s" + " newdirfid %d new name %s\n", olddirfid->fid, old_name, + newdirfid->fid, new_name); + + req = p9_client_rpc(clnt, P9_TRENAMEAT, "dsds", olddirfid->fid, + old_name, newdirfid->fid, new_name); + if (IS_ERR(req)) { + err = PTR_ERR(req); + goto error; + } + + P9_DPRINTK(P9_DEBUG_9P, "<<< RRENAMEAT newdirfid %d new name %s\n", + newdirfid->fid, new_name); + + p9_free_req(clnt, req); +error: + return err; +} +EXPORT_SYMBOL(p9_client_renameat); + /* * An xattrwalk without @attr_name gives the fid for the lisxattr namespace */ -- cgit v1.2.1 From 48e370ff93769ee6e592ddef3bb38686b8147c67 Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Tue, 28 Jun 2011 15:41:18 +0530 Subject: fs/9p: add 9P2000.L unlinkat operation unlinkat - Remove a directory entry size[4] Tunlinkat tag[2] dirfid[4] name[s] flag[4] size[4] Runlinkat tag[2] older Tremove have the below request format size[4] Tremove tag[2] fid[4] The remove message is used to remove a directory entry either file or directory The remove opreation is actually a directory opertation and should ideally have dirfid, if not we cannot represent the fid on server with anything other than name. We will have to derive the directory name from fid in the Tremove request. NOTE: The operation doesn't clunk the unlink fid. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index c4b77f383582..a953baa3624e 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -1303,6 +1303,29 @@ error: } EXPORT_SYMBOL(p9_client_remove); +int p9_client_unlinkat(struct p9_fid *dfid, const char *name, int flags) +{ + int err = 0; + struct p9_req_t *req; + struct p9_client *clnt; + + P9_DPRINTK(P9_DEBUG_9P, ">>> TUNLINKAT fid %d %s %d\n", + dfid->fid, name, flags); + + clnt = dfid->clnt; + req = p9_client_rpc(clnt, P9_TUNLINKAT, "dsd", dfid->fid, name, flags); + if (IS_ERR(req)) { + err = PTR_ERR(req); + goto error; + } + P9_DPRINTK(P9_DEBUG_9P, "<<< RUNLINKAT fid %d %s\n", dfid->fid, name); + + p9_free_req(clnt, req); +error: + return err; +} +EXPORT_SYMBOL(p9_client_unlinkat); + int p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset, u32 count) -- cgit v1.2.1 From c9ffb05ca5b5098d6ea468c909dd384d90da7d54 Mon Sep 17 00:00:00 2001 From: "Venkateswararao Jujjuri (JV)" Date: Wed, 29 Jun 2011 18:06:33 -0700 Subject: net/9p: Fix the msize calculation. msize represents the maximum PDU size that includes P9_IOHDRSZ. Signed-off-by: Venkateswararao Jujjuri " Signed-off-by: Aneesh Kumar K.V Signed-off-by: Eric Van Hensbergen --- net/9p/client.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/9p') diff --git a/net/9p/client.c b/net/9p/client.c index a953baa3624e..0505a03c374c 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -841,8 +841,8 @@ struct p9_client *p9_client_create(const char *dev_name, char *options) if (err) goto destroy_fidpool; - if ((clnt->msize+P9_IOHDRSZ) > clnt->trans_mod->maxsize) - clnt->msize = clnt->trans_mod->maxsize-P9_IOHDRSZ; + if (clnt->msize > clnt->trans_mod->maxsize) + clnt->msize = clnt->trans_mod->maxsize; err = p9_client_version(clnt); if (err) -- cgit v1.2.1