From: Sripathi Kodi Date: Fri, 5 Mar 2010 18:50:14 +0000 (+0000) Subject: 9P2010.L handshake: Remove "dotu" variable X-Git-Tag: v2.6.34-rc1~191^2~2 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=342fee1d5c7dfa05f4e14ec1e583df4553b09776 9P2010.L handshake: Remove "dotu" variable Removes 'dotu' variable and make everything dependent on 'proto_version' field. Signed-off-by: Sripathi Kodi Signed-off-by: Eric Van Hensbergen --- diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index 247f10a934ed..6c7f6a251115 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -262,7 +262,7 @@ struct p9_fid *v9fs_session_init(struct v9fs_session_info *v9ses, goto error; } - if (!v9ses->clnt->dotu) + if (!p9_is_proto_dotu(v9ses->clnt)) v9ses->flags &= ~V9FS_PROTO_2000U; v9ses->maxdata = v9ses->clnt->msize - P9_IOHDRSZ; diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c index 15cce53bf61e..6580aa449541 100644 --- a/fs/9p/vfs_dir.c +++ b/fs/9p/vfs_dir.c @@ -135,7 +135,7 @@ static int v9fs_dir_readdir(struct file *filp, void *dirent, filldir_t filldir) while (rdir->head < rdir->tail) { err = p9stat_read(rdir->buf + rdir->head, buflen - rdir->head, &st, - fid->clnt->dotu); + fid->clnt->proto_version); if (err) { P9_DPRINTK(P9_DEBUG_VFS, "returned %d\n", err); err = -EIO; diff --git a/include/net/9p/client.h b/include/net/9p/client.h index d40f8c55dfae..52e1fff709e4 100644 --- a/include/net/9p/client.h +++ b/include/net/9p/client.h @@ -151,7 +151,6 @@ struct p9_req_t { struct p9_client { spinlock_t lock; /* protect client structure */ int msize; - unsigned char dotu; unsigned char proto_version; struct p9_trans_module *trans_mod; enum p9_trans_status status; @@ -224,5 +223,7 @@ int p9_parse_header(struct p9_fcall *, int32_t *, int8_t *, int16_t *, int); int p9stat_read(char *, int, struct p9_wstat *, int); void p9stat_free(struct p9_wstat *); +int p9_is_proto_dotu(struct p9_client *clnt); +int p9_is_proto_dotl(struct p9_client *clnt); #endif /* NET_9P_CLIENT_H */ diff --git a/net/9p/client.c b/net/9p/client.c index 3b5f3c94a6eb..9994676e57da 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -58,6 +58,18 @@ static const match_table_t tokens = { {Opt_err, NULL}, }; +inline int p9_is_proto_dotl(struct p9_client *clnt) +{ + return (clnt->proto_version == p9_proto_2010L); +} +EXPORT_SYMBOL(p9_is_proto_dotl); + +inline int p9_is_proto_dotu(struct p9_client *clnt) +{ + return (clnt->proto_version == p9_proto_2000u); +} +EXPORT_SYMBOL(p9_is_proto_dotu); + /* Interpret mount option for protocol version */ static unsigned char get_protocol_version(const substring_t *name) { @@ -97,7 +109,7 @@ static int parse_opts(char *opts, struct p9_client *clnt) int option; int ret = 0; - clnt->dotu = 1; + clnt->proto_version = p9_proto_2000u; clnt->msize = 8192; if (!opts) @@ -140,7 +152,7 @@ static int parse_opts(char *opts, struct p9_client *clnt) } break; case Opt_legacy: - clnt->dotu = 0; + clnt->proto_version = p9_proto_legacy; break; case Opt_version: ret = get_protocol_version(&args[0]); @@ -438,14 +450,15 @@ static int p9_check_errors(struct p9_client *c, struct p9_req_t *req) int ecode; char *ename; - err = p9pdu_readf(req->rc, c->dotu, "s?d", &ename, &ecode); + err = p9pdu_readf(req->rc, c->proto_version, "s?d", + &ename, &ecode); if (err) { P9_DPRINTK(P9_DEBUG_ERROR, "couldn't parse error%d\n", err); return err; } - if (c->dotu) + if (p9_is_proto_dotu(c)) err = -ecode; if (!err || !IS_ERR_VALUE(err)) @@ -543,7 +556,7 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...) /* marshall the data */ p9pdu_prepare(req->tc, tag, type); va_start(ap, fmt); - err = p9pdu_vwritef(req->tc, c->dotu, fmt, ap); + err = p9pdu_vwritef(req->tc, c->proto_version, fmt, ap); va_end(ap); p9pdu_finalize(req->tc); @@ -655,14 +668,14 @@ int p9_client_version(struct p9_client *c) char *version; int msize; - P9_DPRINTK(P9_DEBUG_9P, ">>> TVERSION msize %d extended %d\n", - c->msize, c->dotu); + P9_DPRINTK(P9_DEBUG_9P, ">>> TVERSION msize %d protocol %d\n", + c->msize, c->proto_version); req = p9_client_rpc(c, P9_TVERSION, "ds", c->msize, - c->dotu ? "9P2000.u" : "9P2000"); + p9_is_proto_dotu(c) ? "9P2000.u" : "9P2000"); if (IS_ERR(req)) return PTR_ERR(req); - err = p9pdu_readf(req->rc, c->dotu, "ds", &msize, &version); + 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); @@ -670,10 +683,10 @@ int p9_client_version(struct p9_client *c) } P9_DPRINTK(P9_DEBUG_9P, "<<< RVERSION msize %d %s\n", msize, version); - if (!memcmp(version, "9P2000.u", 8)) - c->dotu = 1; - else if (!memcmp(version, "9P2000", 6)) - c->dotu = 0; + if (!strncmp(version, "9P2000.u", 8)) + c->proto_version = p9_proto_2000u; + else if (!strncmp(version, "9P2000", 6)) + c->proto_version = p9_proto_legacy; else { err = -EREMOTEIO; goto error; @@ -728,8 +741,8 @@ struct p9_client *p9_client_create(const char *dev_name, char *options) goto put_trans; } - P9_DPRINTK(P9_DEBUG_MUX, "clnt %p trans %p msize %d dotu %d\n", - clnt, clnt->trans_mod, clnt->msize, clnt->dotu); + P9_DPRINTK(P9_DEBUG_MUX, "clnt %p trans %p msize %d protocol %d\n", + clnt, clnt->trans_mod, clnt->msize, clnt->proto_version); err = clnt->trans_mod->create(clnt, dev_name, options); if (err) @@ -812,7 +825,7 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid, goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "Q", &qid); + err = p9pdu_readf(req->rc, clnt->proto_version, "Q", &qid); if (err) { p9pdu_dump(1, req->rc); p9_free_req(clnt, req); @@ -861,7 +874,7 @@ p9_client_auth(struct p9_client *clnt, char *uname, u32 n_uname, char *aname) goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "Q", &qid); + err = p9pdu_readf(req->rc, clnt->proto_version, "Q", &qid); if (err) { p9pdu_dump(1, req->rc); p9_free_req(clnt, req); @@ -919,7 +932,7 @@ struct p9_fid *p9_client_walk(struct p9_fid *oldfid, int nwname, char **wnames, goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "R", &nwqids, &wqids); + err = p9pdu_readf(req->rc, clnt->proto_version, "R", &nwqids, &wqids); if (err) { p9pdu_dump(1, req->rc); p9_free_req(clnt, req); @@ -980,7 +993,7 @@ int p9_client_open(struct p9_fid *fid, int mode) goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "Qd", &qid, &iounit); + err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit); if (err) { p9pdu_dump(1, req->rc); goto free_and_error; @@ -1025,7 +1038,7 @@ int p9_client_fcreate(struct p9_fid *fid, char *name, u32 perm, int mode, goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "Qd", &qid, &iounit); + err = p9pdu_readf(req->rc, clnt->proto_version, "Qd", &qid, &iounit); if (err) { p9pdu_dump(1, req->rc); goto free_and_error; @@ -1126,7 +1139,7 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset, goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "D", &count, &dataptr); + err = p9pdu_readf(req->rc, clnt->proto_version, "D", &count, &dataptr); if (err) { p9pdu_dump(1, req->rc); goto free_and_error; @@ -1187,7 +1200,7 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata, goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "d", &count); + err = p9pdu_readf(req->rc, clnt->proto_version, "d", &count); if (err) { p9pdu_dump(1, req->rc); goto free_and_error; @@ -1227,7 +1240,7 @@ struct p9_wstat *p9_client_stat(struct p9_fid *fid) goto error; } - err = p9pdu_readf(req->rc, clnt->dotu, "wS", &ignored, ret); + err = p9pdu_readf(req->rc, clnt->proto_version, "wS", &ignored, ret); if (err) { p9pdu_dump(1, req->rc); p9_free_req(clnt, req); @@ -1254,7 +1267,7 @@ error: } EXPORT_SYMBOL(p9_client_stat); -static int p9_client_statsize(struct p9_wstat *wst, int optional) +static int p9_client_statsize(struct p9_wstat *wst, int proto_version) { int ret; @@ -1273,7 +1286,7 @@ static int p9_client_statsize(struct p9_wstat *wst, int optional) if (wst->muid) ret += strlen(wst->muid); - if (optional) { + if (proto_version == p9_proto_2000u) { ret += 2+4+4+4; /* extension[s] n_uid[4] n_gid[4] n_muid[4] */ if (wst->extension) ret += strlen(wst->extension); @@ -1290,7 +1303,7 @@ int p9_client_wstat(struct p9_fid *fid, struct p9_wstat *wst) err = 0; clnt = fid->clnt; - wst->size = p9_client_statsize(wst, clnt->dotu); + wst->size = p9_client_statsize(wst, clnt->proto_version); P9_DPRINTK(P9_DEBUG_9P, ">>> TWSTAT fid %d\n", fid->fid); P9_DPRINTK(P9_DEBUG_9P, " sz=%x type=%x dev=%x qid=%x.%llx.%x\n" diff --git a/net/9p/protocol.c b/net/9p/protocol.c index fc70147c771e..94f5a8f65e9c 100644 --- a/net/9p/protocol.c +++ b/net/9p/protocol.c @@ -52,7 +52,7 @@ #endif static int -p9pdu_writef(struct p9_fcall *pdu, int optional, const char *fmt, ...); +p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...); #ifdef CONFIG_NET_9P_DEBUG void @@ -144,7 +144,8 @@ pdu_write_u(struct p9_fcall *pdu, const char __user *udata, size_t size) */ static int -p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) +p9pdu_vreadf(struct p9_fcall *pdu, int proto_version, const char *fmt, + va_list ap) { const char *ptr; int errcode = 0; @@ -194,7 +195,8 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) int16_t len; int size; - errcode = p9pdu_readf(pdu, optional, "w", &len); + errcode = p9pdu_readf(pdu, proto_version, + "w", &len); if (errcode) break; @@ -217,7 +219,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) struct p9_qid *qid = va_arg(ap, struct p9_qid *); - errcode = p9pdu_readf(pdu, optional, "bdq", + errcode = p9pdu_readf(pdu, proto_version, "bdq", &qid->type, &qid->version, &qid->path); } @@ -230,7 +232,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) stbuf->n_uid = stbuf->n_gid = stbuf->n_muid = -1; errcode = - p9pdu_readf(pdu, optional, + p9pdu_readf(pdu, proto_version, "wwdQdddqssss?sddd", &stbuf->size, &stbuf->type, &stbuf->dev, &stbuf->qid, @@ -250,7 +252,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) void **data = va_arg(ap, void **); errcode = - p9pdu_readf(pdu, optional, "d", count); + p9pdu_readf(pdu, proto_version, "d", count); if (!errcode) { *count = MIN(*count, @@ -263,8 +265,8 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) int16_t *nwname = va_arg(ap, int16_t *); char ***wnames = va_arg(ap, char ***); - errcode = - p9pdu_readf(pdu, optional, "w", nwname); + errcode = p9pdu_readf(pdu, proto_version, + "w", nwname); if (!errcode) { *wnames = kmalloc(sizeof(char *) * *nwname, @@ -278,7 +280,8 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) for (i = 0; i < *nwname; i++) { errcode = - p9pdu_readf(pdu, optional, + p9pdu_readf(pdu, + proto_version, "s", &(*wnames)[i]); if (errcode) @@ -306,7 +309,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) *wqids = NULL; errcode = - p9pdu_readf(pdu, optional, "w", nwqid); + p9pdu_readf(pdu, proto_version, "w", nwqid); if (!errcode) { *wqids = kmalloc(*nwqid * @@ -321,7 +324,8 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) for (i = 0; i < *nwqid; i++) { errcode = - p9pdu_readf(pdu, optional, + p9pdu_readf(pdu, + proto_version, "Q", &(*wqids)[i]); if (errcode) @@ -336,7 +340,7 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) } break; case '?': - if (!optional) + if (proto_version != p9_proto_2000u) return 0; break; default: @@ -352,7 +356,8 @@ p9pdu_vreadf(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) } int -p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) +p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt, + va_list ap) { const char *ptr; int errcode = 0; @@ -389,7 +394,8 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) if (sptr) len = MIN(strlen(sptr), USHORT_MAX); - errcode = p9pdu_writef(pdu, optional, "w", len); + errcode = p9pdu_writef(pdu, proto_version, + "w", len); if (!errcode && pdu_write(pdu, sptr, len)) errcode = -EFAULT; } @@ -398,7 +404,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) const struct p9_qid *qid = va_arg(ap, const struct p9_qid *); errcode = - p9pdu_writef(pdu, optional, "bdq", + p9pdu_writef(pdu, proto_version, "bdq", qid->type, qid->version, qid->path); } break; @@ -406,7 +412,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) const struct p9_wstat *stbuf = va_arg(ap, const struct p9_wstat *); errcode = - p9pdu_writef(pdu, optional, + p9pdu_writef(pdu, proto_version, "wwdQdddqssss?sddd", stbuf->size, stbuf->type, stbuf->dev, &stbuf->qid, @@ -421,8 +427,8 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) int32_t count = va_arg(ap, int32_t); const void *data = va_arg(ap, const void *); - errcode = - p9pdu_writef(pdu, optional, "d", count); + errcode = p9pdu_writef(pdu, proto_version, "d", + count); if (!errcode && pdu_write(pdu, data, count)) errcode = -EFAULT; } @@ -431,8 +437,8 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) int32_t count = va_arg(ap, int32_t); const char __user *udata = va_arg(ap, const void __user *); - errcode = - p9pdu_writef(pdu, optional, "d", count); + errcode = p9pdu_writef(pdu, proto_version, "d", + count); if (!errcode && pdu_write_u(pdu, udata, count)) errcode = -EFAULT; } @@ -441,14 +447,15 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) int16_t nwname = va_arg(ap, int); const char **wnames = va_arg(ap, const char **); - errcode = - p9pdu_writef(pdu, optional, "w", nwname); + errcode = p9pdu_writef(pdu, proto_version, "w", + nwname); if (!errcode) { int i; for (i = 0; i < nwname; i++) { errcode = - p9pdu_writef(pdu, optional, + p9pdu_writef(pdu, + proto_version, "s", wnames[i]); if (errcode) @@ -462,14 +469,15 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) struct p9_qid *wqids = va_arg(ap, struct p9_qid *); - errcode = - p9pdu_writef(pdu, optional, "w", nwqid); + errcode = p9pdu_writef(pdu, proto_version, "w", + nwqid); if (!errcode) { int i; for (i = 0; i < nwqid; i++) { errcode = - p9pdu_writef(pdu, optional, + p9pdu_writef(pdu, + proto_version, "Q", &wqids[i]); if (errcode) @@ -479,7 +487,7 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) } break; case '?': - if (!optional) + if (proto_version != p9_proto_2000u) return 0; break; default: @@ -494,32 +502,32 @@ p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap) return errcode; } -int p9pdu_readf(struct p9_fcall *pdu, int optional, const char *fmt, ...) +int p9pdu_readf(struct p9_fcall *pdu, int proto_version, const char *fmt, ...) { va_list ap; int ret; va_start(ap, fmt); - ret = p9pdu_vreadf(pdu, optional, fmt, ap); + ret = p9pdu_vreadf(pdu, proto_version, fmt, ap); va_end(ap); return ret; } static int -p9pdu_writef(struct p9_fcall *pdu, int optional, const char *fmt, ...) +p9pdu_writef(struct p9_fcall *pdu, int proto_version, const char *fmt, ...) { va_list ap; int ret; va_start(ap, fmt); - ret = p9pdu_vwritef(pdu, optional, fmt, ap); + ret = p9pdu_vwritef(pdu, proto_version, fmt, ap); va_end(ap); return ret; } -int p9stat_read(char *buf, int len, struct p9_wstat *st, int dotu) +int p9stat_read(char *buf, int len, struct p9_wstat *st, int proto_version) { struct p9_fcall fake_pdu; int ret; @@ -529,7 +537,7 @@ int p9stat_read(char *buf, int len, struct p9_wstat *st, int dotu) fake_pdu.sdata = buf; fake_pdu.offset = 0; - ret = p9pdu_readf(&fake_pdu, dotu, "S", st); + 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); diff --git a/net/9p/protocol.h b/net/9p/protocol.h index ccde462e7ac5..2431c0f38d56 100644 --- a/net/9p/protocol.h +++ b/net/9p/protocol.h @@ -25,9 +25,9 @@ * */ -int -p9pdu_vwritef(struct p9_fcall *pdu, int optional, const char *fmt, va_list ap); -int p9pdu_readf(struct p9_fcall *pdu, int optional, const char *fmt, ...); +int p9pdu_vwritef(struct p9_fcall *pdu, int proto_version, const char *fmt, + va_list ap); +int p9pdu_readf(struct p9_fcall *pdu, int proto_version, const char *fmt, ...); int p9pdu_prepare(struct p9_fcall *pdu, int16_t tag, int8_t type); int p9pdu_finalize(struct p9_fcall *pdu); void p9pdu_dump(int, struct p9_fcall *);