discover/pxe-parser: Recognise plugin sources

Extend the pxe-parser to recognise 'PLUGIN' as well as the usual 'LABEL'
when parsing a config file. 'PLUGIN' will be used to specify an option
that provides the location of an installable pb-plugin file, named by
the 'TARBALL' label.

Since plugin options are discovered via the same mechanism as boot
options treat them the same as boot options and at the 'type' field to
the boot_option struct to differentiate between them.

Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>

diff --git a/discover/pxe-parser.c b/discover/pxe-parser.c
index ff867229e5fa9b32c238509a9f89dea9cb32ba53..aef43b8cdfc06737ad72d06fc7f76a4c1670473f 100644 (file)
--- a/discover/pxe-parser.c
+++ b/discover/pxe-parser.c
@@ -148,7 +148,7 @@ static void pxe_process_pair(struct conf_context *ctx,
                return;
        }
 
-       if (streq(name, "LABEL")) {
+       if (streq(name, "LABEL") || streq(name, "PLUGIN")) {
                if (opt)
                        pxe_finish(ctx);
 
@@ -158,8 +158,12 @@ static void pxe_process_pair(struct conf_context *ctx,
                opt->option->id = talloc_asprintf(opt, "%s@%p",
                                ctx->dc->device->device->id, opt);
 
-               opt->option->is_default = parser_info->default_name &&
-                                       streq(parser_info->default_name, value);
+               if (streq(name, "LABEL")) {
+                       opt->option->type = DISCOVER_BOOT_OPTION;
+                       opt->option->is_default = parser_info->default_name &&
+                                               streq(parser_info->default_name, value);
+               } else
+                       opt->option->type = DISCOVER_PLUGIN_OPTION;
 
                parser_info->opt = opt;
                return;
@@ -169,6 +173,14 @@ static void pxe_process_pair(struct conf_context *ctx,
        if (!opt)
                return;
 
+       if (streq(name, "TARBALL") &&
+                       opt->option->type == DISCOVER_PLUGIN_OPTION) {
+               url = pxe_url_join(ctx->dc, ctx->dc->conf_url, value);
+               opt->boot_image = create_url_resource(opt, url);
+               /* All other options apply to boot options only */
+               return;
+       }
+
        if (streq(name, "KERNEL")) {
                url = pxe_url_join(ctx->dc, ctx->dc->conf_url, value);
                opt->boot_image = create_url_resource(opt, url);
@@ -210,7 +222,6 @@ static void pxe_process_pair(struct conf_context *ctx,
                url = pxe_url_join(ctx->dc, ctx->dc->conf_url, value);
                opt->dtb = create_url_resource(opt, url);
        }
-
 }
 
 static void pxe_load_next_filename(struct conf_context *conf)

diff --git a/lib/pb-protocol/pb-protocol.c b/lib/pb-protocol/pb-protocol.c
index ed61fe149b1bbac074dae847cb7d359a3417d3cd..dbbda406fe5a022c518c656c4b44e11b692010da 100644 (file)
--- a/lib/pb-protocol/pb-protocol.c
+++ b/lib/pb-protocol/pb-protocol.c
@@ -75,6 +75,8 @@ void pb_protocol_dump_device(const struct device *dev, const char *text,
                fprintf(stream, "%s\t\tdtb:  %s\n", text, opt->dtb_file);
                fprintf(stream, "%s\t\targs: %s\n", text, opt->boot_args);
                fprintf(stream, "%s\t\tasig: %s\n", text, opt->args_sig_file);
+               fprintf(stream, "%s\t\ttype: %s\n", text,
+                       opt->type == DISCOVER_BOOT_OPTION ? "boot" : "plugin");
        }
 }
 
@@ -201,7 +203,8 @@ int pb_protocol_boot_option_len(const struct boot_option *opt)
                4 + optional_strlen(opt->dtb_file) +
                4 + optional_strlen(opt->boot_args) +
                4 + optional_strlen(opt->args_sig_file) +
-               sizeof(opt->is_default);
+               sizeof(opt->is_default) +
+               sizeof(opt->type);
 }
 
 int pb_protocol_boot_len(const struct boot_command *boot)
@@ -397,6 +400,9 @@ int pb_protocol_serialise_boot_option(const struct boot_option *opt,
        *(bool *)pos = opt->is_default;
        pos += sizeof(bool);
 
+       *(uint32_t *)pos = __cpu_to_be32(opt->type);
+       pos += 4;
+
        assert(pos <= buf + buf_len);
        (void)buf_len;
 
@@ -825,6 +831,11 @@ int pb_protocol_deserialise_boot_option(struct boot_option *opt,
        if (len < sizeof(bool))
                goto out;
        opt->is_default = *(bool *)(pos);
+       pos += sizeof(bool);
+       len -= sizeof(bool);
+
+       if (read_u32(&pos, &len, &opt->type))
+               return -1;
 
        rc = 0;
 

diff --git a/lib/types/types.h b/lib/types/types.h
index 36841cd20b50fed4345579a78b9e25a09b685339..9ab2a43497602d22507e65602132930a20d52f0f 100644 (file)
--- a/lib/types/types.h
+++ b/lib/types/types.h
@@ -58,6 +58,11 @@ struct boot_option {
        struct list_item        list;
 
        void            *ui_info;
+
+       enum {
+               DISCOVER_BOOT_OPTION,
+               DISCOVER_PLUGIN_OPTION,
+       } type;
 };
 
 struct plugin_option {