diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/9p/Kconfig | 10 | ||||
| -rw-r--r-- | net/9p/Makefile | 5 | ||||
| -rw-r--r-- | net/9p/client.c | 13 | ||||
| -rw-r--r-- | net/9p/conv.c | 32 | ||||
| -rw-r--r-- | net/9p/mod.c | 71 | ||||
| -rw-r--r-- | net/9p/mux.c | 5 | ||||
| -rw-r--r-- | net/9p/sysctl.c | 81 | ||||
| -rw-r--r-- | net/9p/trans_fd.c | 419 |
8 files changed, 378 insertions, 258 deletions
diff --git a/net/9p/Kconfig b/net/9p/Kconfig index 66821cd64a76..eecbf12f6393 100644 --- a/net/9p/Kconfig +++ b/net/9p/Kconfig @@ -13,6 +13,16 @@ menuconfig NET_9P If unsure, say N. +config NET_9P_FD + depends on NET_9P + default y if NET_9P + tristate "9P File Descriptor Transports (Experimental)" + help + This builds support for file descriptor transports for 9p + which includes support for TCP/IP, named pipes, or passed + file descriptors. TCP/IP is the default transport for 9p, + so if you are going to use 9p, you'll likely want this. + config NET_9P_DEBUG bool "Debug information" depends on NET_9P diff --git a/net/9p/Makefile b/net/9p/Makefile index 85b3a7838acf..5059bc06f8f3 100644 --- a/net/9p/Makefile +++ b/net/9p/Makefile @@ -1,8 +1,8 @@ obj-$(CONFIG_NET_9P) := 9pnet.o +obj-$(CONFIG_NET_9P_FD) += 9pnet_fd.o 9pnet-objs := \ mod.o \ - trans_fd.o \ mux.o \ client.o \ conv.o \ @@ -10,4 +10,5 @@ obj-$(CONFIG_NET_9P) := 9pnet.o fcprint.o \ util.o \ -9pnet-$(CONFIG_SYSCTL) += sysctl.o +9pnet_fd-objs := \ + trans_fd.o \ diff --git a/net/9p/client.c b/net/9p/client.c index cb170750337c..af9199364049 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -30,6 +30,7 @@ #include <linux/sched.h> #include <linux/uaccess.h> #include <net/9p/9p.h> +#include <linux/parser.h> #include <net/9p/transport.h> #include <net/9p/conn.h> #include <net/9p/client.h> @@ -38,7 +39,7 @@ static struct p9_fid *p9_fid_create(struct p9_client *clnt); static void p9_fid_destroy(struct p9_fid *fid); static struct p9_stat *p9_clone_stat(struct p9_stat *st, int dotu); -struct p9_client *p9_client_create(struct p9_transport *trans, int msize, +struct p9_client *p9_client_create(struct p9_trans *trans, int msize, int dotu) { int err, n; @@ -146,7 +147,7 @@ void p9_client_disconnect(struct p9_client *clnt) EXPORT_SYMBOL(p9_client_disconnect); struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid, - char *uname, char *aname) + char *uname, u32 n_uname, char *aname) { int err; struct p9_fcall *tc, *rc; @@ -165,7 +166,8 @@ struct p9_fid *p9_client_attach(struct p9_client *clnt, struct p9_fid *afid, goto error; } - tc = p9_create_tattach(fid->fid, afid?afid->fid:P9_NOFID, uname, aname); + tc = p9_create_tattach(fid->fid, afid?afid->fid:P9_NOFID, uname, aname, + n_uname, clnt->dotu); if (IS_ERR(tc)) { err = PTR_ERR(tc); tc = NULL; @@ -190,7 +192,8 @@ error: } EXPORT_SYMBOL(p9_client_attach); -struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname, char *aname) +struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname, + u32 n_uname, char *aname) { int err; struct p9_fcall *tc, *rc; @@ -209,7 +212,7 @@ struct p9_fid *p9_client_auth(struct p9_client *clnt, char *uname, char *aname) goto error; } - tc = p9_create_tauth(fid->fid, uname, aname); + tc = p9_create_tauth(fid->fid, uname, aname, n_uname, clnt->dotu); if (IS_ERR(tc)) { err = PTR_ERR(tc); tc = NULL; diff --git a/net/9p/conv.c b/net/9p/conv.c index d979d958ea19..aa2aa9884f95 100644 --- a/net/9p/conv.c +++ b/net/9p/conv.c @@ -547,7 +547,8 @@ error: } EXPORT_SYMBOL(p9_create_tversion); -struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname) +struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname, + u32 n_uname, int dotu) { int size; struct p9_fcall *fc; @@ -555,7 +556,16 @@ struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname) struct cbuf *bufp = &buffer; /* afid[4] uname[s] aname[s] */ - size = 4 + 2 + strlen(uname) + 2 + strlen(aname); + size = 4 + 2 + 2; + if (uname) + size += strlen(uname); + + if (aname) + size += strlen(aname); + + if (dotu) + size += 4; /* n_uname */ + fc = p9_create_common(bufp, size, P9_TAUTH); if (IS_ERR(fc)) goto error; @@ -563,6 +573,8 @@ struct p9_fcall *p9_create_tauth(u32 afid, char *uname, char *aname) p9_put_int32(bufp, afid, &fc->params.tauth.afid); p9_put_str(bufp, uname, &fc->params.tauth.uname); p9_put_str(bufp, aname, &fc->params.tauth.aname); + if (dotu) + p9_put_int32(bufp, n_uname, &fc->params.tauth.n_uname); if (buf_check_overflow(bufp)) { kfree(fc); @@ -574,7 +586,8 @@ error: EXPORT_SYMBOL(p9_create_tauth); struct p9_fcall * -p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname) +p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname, + u32 n_uname, int dotu) { int size; struct p9_fcall *fc; @@ -582,7 +595,16 @@ p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname) struct cbuf *bufp = &buffer; /* fid[4] afid[4] uname[s] aname[s] */ - size = 4 + 4 + 2 + strlen(uname) + 2 + strlen(aname); + size = 4 + 4 + 2 + 2; + if (uname) + size += strlen(uname); + + if (aname) + size += strlen(aname); + + if (dotu) + size += 4; /* n_uname */ + fc = p9_create_common(bufp, size, P9_TATTACH); if (IS_ERR(fc)) goto error; @@ -591,6 +613,8 @@ p9_create_tattach(u32 fid, u32 afid, char *uname, char *aname) p9_put_int32(bufp, afid, &fc->params.tattach.afid); p9_put_str(bufp, uname, &fc->params.tattach.uname); p9_put_str(bufp, aname, &fc->params.tattach.aname); + if (dotu) + p9_put_int32(bufp, n_uname, &fc->params.tattach.n_uname); error: return fc; diff --git a/net/9p/mod.c b/net/9p/mod.c index 4f9e1d2ac257..41d70f47375d 100644 --- a/net/9p/mod.c +++ b/net/9p/mod.c @@ -27,6 +27,10 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <net/9p/9p.h> +#include <linux/fs.h> +#include <linux/parser.h> +#include <net/9p/transport.h> +#include <linux/list.h> #ifdef CONFIG_NET_9P_DEBUG unsigned int p9_debug_level = 0; /* feature-rific global debug level */ @@ -37,8 +41,64 @@ MODULE_PARM_DESC(debug, "9P debugging level"); extern int p9_mux_global_init(void); extern void p9_mux_global_exit(void); -extern int p9_sysctl_register(void); -extern void p9_sysctl_unregister(void); + +/* + * Dynamic Transport Registration Routines + * + */ + +static LIST_HEAD(v9fs_trans_list); +static struct p9_trans_module *v9fs_default_transport; + +/** + * v9fs_register_trans - register a new transport with 9p + * @m - structure describing the transport module and entry points + * + */ +void v9fs_register_trans(struct p9_trans_module *m) +{ + list_add_tail(&m->list, &v9fs_trans_list); + if (m->def) + v9fs_default_transport = m; +} +EXPORT_SYMBOL(v9fs_register_trans); + +/** + * v9fs_match_trans - match transport versus registered transports + * @arg: string identifying transport + * + */ +struct p9_trans_module *v9fs_match_trans(const substring_t *name) +{ + struct list_head *p; + struct p9_trans_module *t = NULL; + + list_for_each(p, &v9fs_trans_list) { + t = list_entry(p, struct p9_trans_module, list); + if (strncmp(t->name, name->from, name->to-name->from) == 0) + break; + } + return t; +} +EXPORT_SYMBOL(v9fs_match_trans); + +/** + * v9fs_default_trans - returns pointer to default transport + * + */ + +struct p9_trans_module *v9fs_default_trans(void) +{ + if (v9fs_default_transport) + return v9fs_default_transport; + else if (!list_empty(&v9fs_trans_list)) + return list_first_entry(&v9fs_trans_list, + struct p9_trans_module, list); + else + return NULL; +} +EXPORT_SYMBOL(v9fs_default_trans); + /** * v9fs_init - Initialize module @@ -56,12 +116,6 @@ static int __init init_p9(void) return ret; } - ret = p9_sysctl_register(); - if (ret) { - printk(KERN_WARNING "9p: registering sysctl failed\n"); - return ret; - } - return ret; } @@ -72,7 +126,6 @@ static int __init init_p9(void) static void __exit exit_p9(void) { - p9_sysctl_unregister(); p9_mux_global_exit(); } diff --git a/net/9p/mux.c b/net/9p/mux.c index 5d70558c4c61..f14014793bed 100644 --- a/net/9p/mux.c +++ b/net/9p/mux.c @@ -31,6 +31,7 @@ #include <linux/idr.h> #include <linux/mutex.h> #include <net/9p/9p.h> +#include <linux/parser.h> #include <net/9p/transport.h> #include <net/9p/conn.h> @@ -71,7 +72,7 @@ struct p9_conn { struct p9_mux_poll_task *poll_task; int msize; unsigned char *extended; - struct p9_transport *trans; + struct p9_trans *trans; struct p9_idpool *tagpool; int err; wait_queue_head_t equeue; @@ -271,7 +272,7 @@ static void p9_mux_poll_stop(struct p9_conn *m) * @msize - maximum message size * @extended - pointer to the extended flag */ -struct p9_conn *p9_conn_create(struct p9_transport *trans, int msize, +struct p9_conn *p9_conn_create(struct p9_trans *trans, int msize, unsigned char *extended) { int i, n; diff --git a/net/9p/sysctl.c b/net/9p/sysctl.c deleted file mode 100644 index 8b61027a24ea..000000000000 --- a/net/9p/sysctl.c +++ /dev/null @@ -1,81 +0,0 @@ -/* - * net/9p/sysctl.c - * - * 9P sysctl interface - * - * Copyright (C) 2007 by Latchesar Ionkov <lucho@ionkov.net> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to: - * Free Software Foundation - * 51 Franklin Street, Fifth Floor - * Boston, MA 02111-1301 USA - * - */ - -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/sysctl.h> -#include <linux/init.h> -#include <net/9p/9p.h> - -static struct ctl_table p9_table[] = { -#ifdef CONFIG_NET_9P_DEBUG - { - .ctl_name = CTL_UNNUMBERED, - .procname = "debug", - .data = &p9_debug_level, - .maxlen = sizeof(int), - .mode = 0644, - .proc_handler = &proc_dointvec - }, -#endif - {}, -}; - -static struct ctl_table p9_net_table[] = { - { - .ctl_name = CTL_UNNUMBERED, - .procname = "9p", - .maxlen = 0, - .mode = 0555, - .child = p9_table, - }, - {}, -}; - -static struct ctl_table p9_ctl_table[] = { - { - .ctl_name = CTL_NET, - .procname = "net", - .maxlen = 0, - .mode = 0555, - .child = p9_net_table, - }, - {}, -}; - -static struct ctl_table_header *p9_table_header; - -int __init p9_sysctl_register(void) -{ - p9_table_header = register_sysctl_table(p9_ctl_table); - if (!p9_table_header) - return -ENOMEM; - - return 0; -} - -void __exit p9_sysctl_unregister(void) -{ - unregister_sysctl_table(p9_table_header); -} diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index fd636e94358f..30269a4ff22a 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -5,7 +5,7 @@ * * Copyright (C) 2006 by Russ Cox <rsc@swtch.com> * Copyright (C) 2004-2005 by Latchesar Ionkov <lucho@ionkov.net> - * Copyright (C) 2004-2005 by Eric Van Hensbergen <ericvh@gmail.com> + * Copyright (C) 2004-2007 by Eric Van Hensbergen <ericvh@gmail.com> * Copyright (C) 1997-2002 by Ron Minnich <rminnich@sarnoff.com> * * This program is free software; you can redistribute it and/or modify @@ -36,160 +36,114 @@ #include <linux/inet.h> #include <linux/idr.h> #include <linux/file.h> +#include <linux/parser.h> #include <net/9p/9p.h> #include <net/9p/transport.h> #define P9_PORT 564 +#define MAX_SOCK_BUF (64*1024) + + +struct p9_fd_opts { + int rfd; + int wfd; + u16 port; +}; struct p9_trans_fd { struct file *rd; struct file *wr; }; -static int p9_socket_open(struct p9_transport *trans, struct socket *csocket); -static int p9_fd_open(struct p9_transport *trans, int rfd, int wfd); -static int p9_fd_read(struct p9_transport *trans, void *v, int len); -static int p9_fd_write(struct p9_transport *trans, void *v, int len); -static unsigned int p9_fd_poll(struct p9_transport *trans, - struct poll_table_struct *pt); -static void p9_fd_close(struct p9_transport *trans); - -struct p9_transport *p9_trans_create_tcp(const char *addr, int port) -{ - int err; - struct p9_transport *trans; - struct socket *csocket; - struct sockaddr_in sin_server; - - csocket = NULL; - trans = kmalloc(sizeof(struct p9_transport), GFP_KERNEL); - if (!trans) - return ERR_PTR(-ENOMEM); - - trans->write = p9_fd_write; - trans->read = p9_fd_read; - trans->close = p9_fd_close; - trans->poll = p9_fd_poll; - - sin_server.sin_family = AF_INET; - sin_server.sin_addr.s_addr = in_aton(addr); - sin_server.sin_port = htons(port); - sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, &csocket); - - if (!csocket) { - P9_EPRINTK(KERN_ERR, "p9_trans_tcp: problem creating socket\n"); - err = -EIO; - goto error; - } - - err = csocket->ops->connect(csocket, - (struct sockaddr *)&sin_server, - sizeof(struct sockaddr_in), 0); - if (err < 0) { - P9_EPRINTK(KERN_ERR, - "p9_trans_tcp: problem connecting socket to %s\n", - addr); - goto error; - } - - err = p9_socket_open(trans, csocket); - if (err < 0) - goto error; +/* + * Option Parsing (code inspired by NFS code) + * - a little lazy - parse all fd-transport options + */ - return trans; +enum { + /* Options that take integer arguments */ + Opt_port, Opt_rfdno, Opt_wfdno, +}; -error: - if (csocket) - sock_release(csocket); +static match_table_t tokens = { + {Opt_port, "port=%u"}, + {Opt_rfdno, "rfdno=%u"}, + {Opt_wfdno, "wfdno=%u"}, +}; - kfree(trans); - return ERR_PTR(err); -} -EXPORT_SYMBOL(p9_trans_create_tcp); +/** + * v9fs_parse_options - parse mount options into session structure + * @options: options string passed from mount + * @v9ses: existing v9fs session information + * + */ -struct p9_transport *p9_trans_create_unix(const char *addr) +static void parse_opts(char *options, struct p9_fd_opts *opts) { - int err; - struct socket *csocket; - struct sockaddr_un sun_server; - struct p9_transport *trans; - - csocket = NULL; - trans = kmalloc(sizeof(struct p9_transport), GFP_KERNEL); - if (!trans) - return ERR_PTR(-ENOMEM); + char *p; + substring_t args[MAX_OPT_ARGS]; + int option; + int ret; - trans->write = p9_fd_write; - trans->read = p9_fd_read; - trans->close = p9_fd_close; - trans->poll = p9_fd_poll; + opts->port = P9_PORT; + opts->rfd = ~0; + opts->wfd = ~0; - if (strlen(addr) > UNIX_PATH_MAX) { - P9_EPRINTK(KERN_ERR, "p9_trans_unix: address too long: %s\n", - addr); - err = -ENAMETOOLONG; - goto error; - } + if (!options) + return; - sun_server.sun_family = PF_UNIX; - strcpy(sun_server.sun_path, addr); - sock_create_kern(PF_UNIX, SOCK_STREAM, 0, &csocket); - err = csocket->ops->connect(csocket, (struct sockaddr *)&sun_server, - sizeof(struct sockaddr_un) - 1, 0); - if (err < 0) { - P9_EPRINTK(KERN_ERR, - "p9_trans_unix: problem connecting socket: %s: %d\n", - addr, err); - goto error; + while ((p = strsep(&options, ",")) != NULL) { + int token; + if (!*p) + continue; + token = match_token(p, tokens, args); + ret = match_int(&args[0], &option); + if (ret < 0) { + P9_DPRINTK(P9_DEBUG_ERROR, + "integer field, but no integer?\n"); + continue; + } + switch (token) { + case Opt_port: + opts->port = option; + break; + case Opt_rfdno: + opts->rfd = option; + break; + case Opt_wfdno: + opts->wfd = option; + break; + default: + continue; + } } - - err = p9_socket_open(trans, csocket); - if (err < 0) - goto error; - - return trans; - -error: - if (csocket) - sock_release(csocket); - - kfree(trans); - return ERR_PTR(err); } -EXPORT_SYMBOL(p9_trans_create_unix); -struct p9_transport *p9_trans_create_fd(int rfd, int wfd) +static int p9_fd_open(struct p9_trans *trans, int rfd, int wfd) { - int err; - struct p9_transport *trans; + struct p9_trans_fd *ts = kmalloc(sizeof(struct p9_trans_fd), + GFP_KERNEL); + if (!ts) + return -ENOMEM; - if (rfd == ~0 || wfd == ~0) { - printk(KERN_ERR "v9fs: Insufficient options for proto=fd\n"); - return ERR_PTR(-ENOPROTOOPT); + ts->rd = fget(rfd); + ts->wr = fget(wfd); + if (!ts->rd || !ts->wr) { + if (ts->rd) + fput(ts->rd); + if (ts->wr) + fput(ts->wr); + kfree(ts); + return -EIO; } - trans = kmalloc(sizeof(struct p9_transport), GFP_KERNEL); - if (!trans) - return ERR_PTR(-ENOMEM); - - trans->write = p9_fd_write; - trans->read = p9_fd_read; - trans->close = p9_fd_close; - trans->poll = p9_fd_poll; - - err = p9_fd_open(trans, rfd, wfd); - if (err < 0) - goto error; - - return trans; + trans->priv = ts; + trans->status = Connected; -error: - kfree(trans); - return ERR_PTR(err); + return 0; } -EXPORT_SYMBOL(p9_trans_create_fd); -static int p9_socket_open(struct p9_transport *trans, struct socket *csocket) +static int p9_socket_open(struct p9_trans *trans, struct socket *csocket) { int fd, ret; @@ -212,30 +166,6 @@ static int p9_socket_open(struct p9_transport *trans, struct socket *csocket) return 0; } -static int p9_fd_open(struct p9_transport *trans, int rfd, int wfd) -{ - struct p9_trans_fd *ts = kmalloc(sizeof(struct p9_trans_fd), - GFP_KERNEL); - if (!ts) - return -ENOMEM; - - ts->rd = fget(rfd); - ts->wr = fget(wfd); - if (!ts->rd || !ts->wr) { - if (ts->rd) - fput(ts->rd); - if (ts->wr) - fput(ts->wr); - kfree(ts); - return -EIO; - } - - trans->priv = ts; - trans->status = Connected; - - return 0; -} - /** * p9_fd_read- read from a fd * @v9ses: session information @@ -243,7 +173,7 @@ static int p9_fd_open(struct p9_transport *trans, int rfd, int wfd) * @len: size of receive buffer * */ -static int p9_fd_read(struct p9_transport *trans, void *v, int len) +static int p9_fd_read(struct p9_trans *trans, void *v, int len) { int ret; struct p9_trans_fd *ts = NULL; @@ -270,7 +200,7 @@ static int p9_fd_read(struct p9_transport *trans, void *v, int len) * @len: size of send buffer * */ -static int p9_fd_write(struct p9_transport *trans, void *v, int len) +static int p9_fd_write(struct p9_trans *trans, void *v, int len) { int ret; mm_segment_t oldfs; @@ -297,7 +227,7 @@ static int p9_fd_write(struct p9_transport *trans, void *v, int len) } static unsigned int -p9_fd_poll(struct p9_transport *trans, struct poll_table_struct *pt) +p9_fd_poll(struct p9_trans *trans, struct poll_table_struct *pt) { int ret, n; struct p9_trans_fd *ts = NULL; @@ -341,7 +271,7 @@ end: * @trans: private socket structure * */ -static void p9_fd_close(struct p9_transport *trans) +static void p9_fd_close(struct p9_trans *trans) { struct p9_trans_fd *ts; @@ -361,3 +291,182 @@ static void p9_fd_close(struct p9_transport *trans) kfree(ts); } +static struct p9_trans *p9_trans_create_tcp(const char *addr, char *args) +{ + int err; + struct p9_trans *trans; + struct socket *csocket; + struct sockaddr_in sin_server; + struct p9_fd_opts opts; + + parse_opts(args, &opts); + + csocket = NULL; + trans = kmalloc(sizeof(struct p9_trans), GFP_KERNEL); + if (!trans) + return ERR_PTR(-ENOMEM); + + trans->write = p9_fd_write; + trans->read = p9_fd_read; + trans->close = p9_fd_close; + trans->poll = p9_fd_poll; + + sin_server.sin_family = AF_INET; + sin_server.sin_addr.s_addr = in_aton(addr); + sin_server.sin_port = htons(opts.port); + sock_create_kern(PF_INET, SOCK_STREAM, IPPROTO_TCP, &csocket); + + if (!csocket) { + P9_EPRINTK(KERN_ERR, "p9_trans_tcp: problem creating socket\n"); + err = -EIO; + goto error; + } + + err = csocket->ops->connect(csocket, + (struct sockaddr *)&sin_server, + sizeof(struct sockaddr_in), 0); + if (err < 0) { + P9_EPRINTK(KERN_ERR, + "p9_trans_tcp: problem connecting socket to %s\n", + addr); + goto error; + } + + err = p9_socket_open(trans, csocket); + if (err < 0) + goto error; + + return trans; + +error: + if (csocket) + sock_release(csocket); + + kfree(trans); + return ERR_PTR(err); +} + +static struct p9_trans *p9_trans_create_unix(const char *addr, char *args) +{ + int err; + struct socket *csocket; + struct sockaddr_un sun_server; + struct p9_trans *trans; + + csocket = NULL; + trans = kmalloc(sizeof(struct p9_trans), GFP_KERNEL); + if (!trans) + return ERR_PTR(-ENOMEM); + + trans->write = p9_fd_write; + trans->read = p9_fd_read; + trans->close = p9_fd_close; + trans->poll = p9_fd_poll; + + if (strlen(addr) > UNIX_PATH_MAX) { + P9_EPRINTK(KERN_ERR, "p9_trans_unix: address too long: %s\n", + addr); + err = -ENAMETOOLONG; + goto error; + } + + sun_server.sun_family = PF_UNIX; + strcpy(sun_server.sun_path, addr); + sock_create_kern(PF_UNIX, SOCK_STREAM, 0, &csocket); + err = csocket->ops->connect(csocket, (struct sockaddr *)&sun_server, + sizeof(struct sockaddr_un) - 1, 0); + if (err < 0) { + P9_EPRINTK(KERN_ERR, + "p9_trans_unix: problem connecting socket: %s: %d\n", + addr, err); + goto error; + } + + err = p9_socket_open(trans, csocket); + if (err < 0) + goto error; + + return trans; + +error: + if (csocket) + sock_release(csocket); + + kfree(trans); + return ERR_PTR(err); +} + +static struct p9_trans *p9_trans_create_fd(const char *name, char *args) +{ + int err; + struct p9_trans *trans; + struct p9_fd_opts opts; + + parse_opts(args, &opts); + + if (opts.rfd == ~0 || opts.wfd == ~0) { + printk(KERN_ERR "v9fs: Insufficient options for proto=fd\n"); + return ERR_PTR(-ENOPROTOOPT); + } + + trans = kmalloc(sizeof(struct p9_trans), GFP_KERNEL); + if (!trans) + return ERR_PTR(-ENOMEM); + + trans->write = p9_fd_write; + trans->read = p9_fd_read; + trans->close = p9_fd_close; + trans->poll = p9_fd_poll; + + err = p9_fd_open(trans, opts.rfd, opts.wfd); + if (err < 0) + goto error; + + return trans; + +error: + kfree(trans); + return ERR_PTR(err); +} + +static struct p9_trans_module p9_tcp_trans = { + .name = "tcp", + .maxsize = MAX_SOCK_BUF, + .def = 1, + .create = p9_trans_create_tcp, +}; + +static struct p9_trans_module p9_unix_trans = { + .name = "unix", + .maxsize = MAX_SOCK_BUF, + .def = 0, + .create = p9_trans_create_unix, +}; + +static struct p9_trans_module p9_fd_trans = { + .name = "fd", + .maxsize = MAX_SOCK_BUF, + .def = 0, + .create = p9_trans_create_fd, +}; + +static int __init p9_trans_fd_init(void) +{ + v9fs_register_trans(&p9_tcp_trans); + v9fs_register_trans(&p9_unix_trans); + v9fs_register_trans(&p9_fd_trans); + + return 1; +} + +static void __exit p9_trans_fd_exit(void) { + printk(KERN_ERR "Removal of 9p transports not implemented\n"); + BUG(); +} + +module_init(p9_trans_fd_init); +module_exit(p9_trans_fd_exit); + +MODULE_AUTHOR("Latchesar Ionkov <lucho@ionkov.net>"); +MODULE_AUTHOR("Eric Van Hensbergen <ericvh@gmail.com>"); +MODULE_LICENSE("GPL"); |