diff options
Diffstat (limited to 'net/9p/trans_fd.c')
| -rw-r--r-- | net/9p/trans_fd.c | 136 |
1 files changed, 18 insertions, 118 deletions
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c index 49d674f5e73a..0e331c1b2112 100644 --- a/net/9p/trans_fd.c +++ b/net/9p/trans_fd.c @@ -22,7 +22,7 @@ #include <linux/uaccess.h> #include <linux/inet.h> #include <linux/file.h> -#include <linux/parser.h> +#include <linux/fs_context.h> #include <linux/slab.h> #include <linux/seq_file.h> #include <net/9p/9p.h> @@ -31,48 +31,12 @@ #include <linux/syscalls.h> /* killme */ -#define P9_PORT 564 #define MAX_SOCK_BUF (1024*1024) #define MAXPOLLWADDR 2 static struct p9_trans_module p9_tcp_trans; static struct p9_trans_module p9_fd_trans; -/** - * struct p9_fd_opts - per-transport options - * @rfd: file descriptor for reading (trans=fd) - * @wfd: file descriptor for writing (trans=fd) - * @port: port to connect to (trans=tcp) - * @privport: port is privileged - */ - -struct p9_fd_opts { - int rfd; - int wfd; - u16 port; - bool privport; -}; - -/* - * Option Parsing (code inspired by NFS code) - * - a little lazy - parse all fd-transport options - */ - -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}, -}; - enum { Rworksched = 1, /* read work scheduled or running */ Rpending = 2, /* can read */ @@ -742,7 +706,7 @@ static int p9_fd_cancelled(struct p9_client *client, struct p9_req_t *req) static int p9_fd_show_options(struct seq_file *m, struct p9_client *clnt) { if (clnt->trans_mod == &p9_tcp_trans) { - if (clnt->trans_opts.tcp.port != P9_PORT) + if (clnt->trans_opts.tcp.port != P9_FD_PORT) seq_printf(m, ",port=%u", clnt->trans_opts.tcp.port); } else if (clnt->trans_mod == &p9_fd_trans) { if (clnt->trans_opts.fd.rfd != ~0) @@ -753,73 +717,6 @@ static int p9_fd_show_options(struct seq_file *m, struct p9_client *clnt) return 0; } -/** - * parse_opts - parse mount options into p9_fd_opts structure - * @params: options string passed from mount - * @opts: fd transport-specific structure to parse options into - * - * Returns 0 upon success, -ERRNO upon failure - */ - -static int parse_opts(char *params, struct p9_fd_opts *opts) -{ - char *p; - substring_t args[MAX_OPT_ARGS]; - int option; - char *options, *tmp_options; - - opts->port = P9_PORT; - opts->rfd = ~0; - opts->wfd = ~0; - opts->privport = false; - - if (!params) - return 0; - - tmp_options = kstrdup(params, GFP_KERNEL); - if (!tmp_options) { - p9_debug(P9_DEBUG_ERROR, - "failed to allocate copy of option string\n"); - return -ENOMEM; - } - options = tmp_options; - - while ((p = strsep(&options, ",")) != NULL) { - int token; - int r; - if (!*p) - continue; - token = match_token(p, tokens, args); - if ((token != Opt_err) && (token != Opt_privport)) { - r = match_int(&args[0], &option); - if (r < 0) { - p9_debug(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; - case Opt_privport: - opts->privport = true; - break; - default: - continue; - } - } - - kfree(tmp_options); - return 0; -} - static int p9_fd_open(struct p9_client *client, int rfd, int wfd) { struct p9_trans_fd *ts = kzalloc(sizeof(struct p9_trans_fd), @@ -974,17 +871,18 @@ static int p9_bind_privport(struct socket *sock) } static int -p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args) +p9_fd_create_tcp(struct p9_client *client, struct fs_context *fc) { + const char *addr = fc->source; + struct v9fs_context *ctx = fc->fs_private; int err; char port_str[6]; struct socket *csocket; struct sockaddr_storage stor = { 0 }; struct p9_fd_opts opts; - err = parse_opts(args, &opts); - if (err < 0) - return err; + /* opts are already parsed in context */ + opts = ctx->fd_opts; if (!addr) return -EINVAL; @@ -1031,8 +929,9 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args) } static int -p9_fd_create_unix(struct p9_client *client, const char *addr, char *args) +p9_fd_create_unix(struct p9_client *client, struct fs_context *fc) { + const char *addr = fc->source; int err; struct socket *csocket; struct sockaddr_un sun_server; @@ -1071,14 +970,12 @@ p9_fd_create_unix(struct p9_client *client, const char *addr, char *args) } static int -p9_fd_create(struct p9_client *client, const char *addr, char *args) +p9_fd_create(struct p9_client *client, struct fs_context *fc) { + struct v9fs_context *ctx = fc->fs_private; + struct p9_fd_opts opts = ctx->fd_opts; int err; - struct p9_fd_opts opts; - err = parse_opts(args, &opts); - if (err < 0) - return err; client->trans_opts.fd.rfd = opts.rfd; client->trans_opts.fd.wfd = opts.wfd; @@ -1100,7 +997,8 @@ static struct p9_trans_module p9_tcp_trans = { .name = "tcp", .maxsize = MAX_SOCK_BUF, .pooled_rbuffers = false, - .def = 0, + .def = false, + .supports_vmalloc = true, .create = p9_fd_create_tcp, .close = p9_fd_close, .request = p9_fd_request, @@ -1114,7 +1012,8 @@ MODULE_ALIAS_9P("tcp"); static struct p9_trans_module p9_unix_trans = { .name = "unix", .maxsize = MAX_SOCK_BUF, - .def = 0, + .def = false, + .supports_vmalloc = true, .create = p9_fd_create_unix, .close = p9_fd_close, .request = p9_fd_request, @@ -1128,7 +1027,8 @@ MODULE_ALIAS_9P("unix"); static struct p9_trans_module p9_fd_trans = { .name = "fd", .maxsize = MAX_SOCK_BUF, - .def = 0, + .def = false, + .supports_vmalloc = true, .create = p9_fd_create, .close = p9_fd_close, .request = p9_fd_request, |