diff options
author | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-06-04 11:40:18 +1000 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-06-04 11:40:18 +1000 |
commit | d88429600545ac0b105a163acb22172ea5209cd1 (patch) | |
tree | 808c621635b92fc18540def185579169673321c6 /net | |
parent | 355a3ff77eeae3648d59350c1850c38e85ea93cb (diff) | |
parent | 7a0d932b50945c21e7185451182087499e8116e5 (diff) |
Merge remote-tracking branch 'v9fs/for-next'
Diffstat (limited to 'net')
-rw-r--r-- | net/9p/client.c | 60 | ||||
-rw-r--r-- | net/9p/trans_fd.c | 40 |
2 files changed, 61 insertions, 39 deletions
diff --git a/net/9p/client.c b/net/9p/client.c index 8eb75425e6e6..01f1779eba80 100644 --- a/net/9p/client.c +++ b/net/9p/client.c @@ -127,7 +127,7 @@ static int parse_opts(char *opts, struct p9_client *clnt) char *s; int ret = 0; - clnt->proto_version = p9_proto_2000u; + clnt->proto_version = p9_proto_2000L; clnt->msize = 8192; if (!opts) @@ -562,36 +562,19 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req, if (!p9_is_proto_dotl(c)) { /* Error is reported in string format */ - uint16_t len; - /* 7 = header size for RERROR, 2 is the size of string len; */ - int inline_len = in_hdrlen - (7 + 2); + int len; + /* 7 = header size for RERROR; */ + int inline_len = in_hdrlen - 7; - /* Read the size of error string */ - err = p9pdu_readf(req->rc, c->proto_version, "w", &len); - if (err) - goto out_err; - - ename = kmalloc(len + 1, GFP_NOFS); - if (!ename) { - err = -ENOMEM; + len = req->rc->size - req->rc->offset; + if (len > (P9_ZC_HDR_SZ - 7)) { + err = -EFAULT; goto out_err; } - if (len <= inline_len) { - /* We have error in protocol buffer itself */ - if (pdu_read(req->rc, ename, len)) { - err = -EFAULT; - goto out_free; - - } - } else { - /* - * Part of the data is in user space buffer. - */ - if (pdu_read(req->rc, ename, inline_len)) { - err = -EFAULT; - goto out_free; - } + ename = &req->rc->sdata[req->rc->offset]; + if (len > inline_len) { + /* We have error in external buffer */ if (kern_buf) { memcpy(ename + inline_len, uidata, len - inline_len); @@ -600,19 +583,19 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req, uidata, len - inline_len); if (err) { err = -EFAULT; - goto out_free; + goto out_err; } } } - ename[len] = 0; - if (p9_is_proto_dotu(c)) { - /* For dotu we also have error code */ - err = p9pdu_readf(req->rc, - c->proto_version, "d", &ecode); - if (err) - goto out_free; + ename = NULL; + err = p9pdu_readf(req->rc, c->proto_version, "s?d", + &ename, &ecode); + if (err) + goto out_err; + + if (p9_is_proto_dotu(c)) err = -ecode; - } + if (!err || !IS_ERR_VALUE(err)) { err = p9_errstr2errno(ename, strlen(ename)); @@ -628,8 +611,6 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req, } return err; -out_free: - kfree(ename); out_err: p9_debug(P9_DEBUG_ERROR, "couldn't parse error%d\n", err); return err; @@ -1015,6 +996,9 @@ struct p9_client *p9_client_create(const char *dev_name, char *options) goto destroy_tagpool; if (!clnt->trans_mod) + clnt->trans_mod = v9fs_get_trans_by_name("virtio"); + + if (!clnt->trans_mod) clnt->trans_mod = v9fs_get_default_trans(); if (clnt->trans_mod == NULL) { diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index 02efb25c2957..69beabb201ef 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -63,6 +63,7 @@ struct p9_fd_opts { int rfd; int wfd; u16 port; + int privport; }; /** @@ -87,12 +88,15 @@ struct p9_trans_fd { enum { /* Options that take integer arguments */ Opt_port, Opt_rfdno, Opt_wfdno, Opt_err, + /* Options that take no arguments */ + Opt_privport, }; static const match_table_t tokens = { {Opt_port, "port=%u"}, {Opt_rfdno, "rfdno=%u"}, {Opt_wfdno, "wfdno=%u"}, + {Opt_privport, "privport"}, {Opt_err, NULL}, }; @@ -161,6 +165,9 @@ static DEFINE_SPINLOCK(p9_poll_lock); static LIST_HEAD(p9_poll_pending_list); static DECLARE_WORK(p9_poll_work, p9_poll_workfn); +static unsigned int p9_ipport_resv_min = P9_DEF_MIN_RESVPORT; +static unsigned int p9_ipport_resv_max = P9_DEF_MAX_RESVPORT; + static void p9_mux_poll_stop(struct p9_conn *m) { unsigned long flags; @@ -741,7 +748,7 @@ static int parse_opts(char *params, struct p9_fd_opts *opts) if (!*p) continue; token = match_token(p, tokens, args); - if (token != Opt_err) { + if (token != Opt_err && token != Opt_privport) { r = match_int(&args[0], &option); if (r < 0) { p9_debug(P9_DEBUG_ERROR, @@ -759,6 +766,9 @@ static int parse_opts(char *params, struct p9_fd_opts *opts) case Opt_wfdno: opts->wfd = option; break; + case Opt_privport: + opts->privport = 1; + break; default: continue; } @@ -898,6 +908,24 @@ static inline int valid_ipaddr4(const char *buf) return 0; } +static int p9_bind_privport (struct socket *sock) +{ + struct sockaddr_in cl; + int port, err = -EINVAL; + + memset(&cl, 0, sizeof (cl)); + cl.sin_family = AF_INET; + cl.sin_addr.s_addr = INADDR_ANY; + for (port = p9_ipport_resv_max; port >= p9_ipport_resv_min; port--) { + cl.sin_port = htons((ushort)port); + err = kernel_bind(sock, (struct sockaddr *)&cl, sizeof (cl)); + if (err != -EADDRINUSE) + break; + } + return err; +} + + static int p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args) { @@ -926,6 +954,16 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args) return err; } + if (opts.privport) { + err = p9_bind_privport (csocket); + if (err < 0) { + pr_err("%s (%d): problem binding to privport\n", + __func__, task_pid_nr(current)); + sock_release(csocket); + return err; + } + } + err = csocket->ops->connect(csocket, (struct sockaddr *)&sin_server, sizeof(struct sockaddr_in), 0); |