yocto-kernel: add support for listing available kernel features
Add a yocto-kernel command allowing users to list all the kernel features available to a BSP. This includes the features contained in linux-yocto meta branches as well as recipe-space features defined locally to the BSP. (From meta-yocto rev: 12f3af8d92456ad9212170decdbe102fc78b58f6) Signed-off-by: Tom Zanussi <tom.zanussi@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Tom Zanussi
Richard Purdie
parent
0bfe83edbb
commit
934f2ed253
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@ -386,6 +386,7 @@ yocto_kernel_usage = """
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feature list List the features used by a BSP
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feature add Have a BSP use a feature
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feature rm Have a BSP stop using a feature
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features list List the features available to BSPs
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See 'yocto-kernel help COMMAND' for more information on a specific command.
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@ -692,6 +693,36 @@ DESCRIPTION
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remove.
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"""
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yocto_kernel_available_features_list_usage = """
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List the set of kernel features available to a BSP
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usage: yocto-kernel features list <bsp-name>
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This command lists the complete set of kernel features available to a
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BSP. This includes the features contained in linux-yocto meta
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branches as well as recipe-space features defined locally to the BSP.
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"""
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yocto_kernel_available_features_list_help = """
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NAME
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yocto-kernel features list - List the set of kernel features
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available to a BSP
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SYNOPSIS
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yocto-kernel features list <bsp-name>
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DESCRIPTION
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This command lists the complete set of kernel features available
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to a BSP. This includes the features contained in linux-yocto
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meta branches as well as recipe-space features defined locally to
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the BSP.
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"""
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##
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# yocto-layer help and usage strings
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##
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@ -32,6 +32,7 @@ import shutil
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from tags import *
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import glob
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import subprocess
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from engine import create_context
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def find_bblayers(scripts_path):
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@ -651,6 +652,112 @@ def yocto_kernel_feature_add(scripts_path, machine, features):
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for n in new_items:
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print "\t%s" % n
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def find_feature_url(git_url):
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"""
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Find the url of the kern-features.rc kernel for the kernel repo
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specified from the BSP's kernel recipe SRC_URI.
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"""
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feature_url = ""
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if git_url.startswith("git://"):
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git_url = git_url[len("git://"):].strip()
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s = git_url.split("/")
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if s[1].endswith(".git"):
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s[1] = s[1][:len(s[1]) - len(".git")]
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feature_url = "http://" + s[0] + "/cgit/cgit.cgi/" + s[1] + \
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"/plain/meta/cfg/kern-features.rc?h=meta"
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return feature_url
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def find_feature_desc(lines):
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"""
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Find the feature description and compatibility in the passed-in
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set of lines. Returns a string string of the form 'desc
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[compat]'.
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"""
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desc = "no description available"
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compat = "unknown"
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for line in lines:
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idx = line.find("KFEATURE_DESCRIPTION")
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if idx != -1:
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desc = line[idx + len("KFEATURE_DESCRIPTION"):].strip()
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if desc.startswith("\""):
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desc = desc[1:]
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if desc.endswith("\""):
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desc = desc[:-1]
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else:
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idx = line.find("KFEATURE_COMPATIBILITY")
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if idx != -1:
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compat = line[idx + len("KFEATURE_COMPATIBILITY"):].strip()
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return desc + " [" + compat + "]"
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def print_feature_descs(layer, feature_dir):
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"""
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Print the feature descriptions for the features in feature_dir.
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"""
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kernel_files_features = os.path.join(layer, "recipes-kernel/linux/files/" +
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feature_dir)
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for root, dirs, files in os.walk(kernel_files_features):
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for file in files:
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if file.endswith("~") or file.endswith("#"):
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continue
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if file.endswith(".scc"):
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fullpath = os.path.join(layer, "recipes-kernel/linux/files/" +
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feature_dir + "/" + file)
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f = open(fullpath)
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feature_desc = find_feature_desc(f.readlines())
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print feature_dir + "/" + file + ": " + feature_desc
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def yocto_kernel_available_features_list(scripts_path, machine):
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"""
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Display the list of all the kernel features available for use in
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BSPs, as gathered from the set of feature sources.
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"""
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layer = find_bsp_layer(scripts_path, machine)
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kernel = find_current_kernel(layer, machine)
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if not kernel:
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print "Couldn't determine the kernel for this BSP, exiting."
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sys.exit(1)
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context = create_context(machine, "arch", scripts_path)
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context["name"] = "name"
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context["filename"] = kernel
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giturl = find_giturl(context)
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feature_url = find_feature_url(giturl)
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feature_cmd = "wget -q -O - " + feature_url
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tmp = subprocess.Popen(feature_cmd, shell=True, stdout=subprocess.PIPE).stdout.read()
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print "The current set of kernel features available to %s is:\n" % machine
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if tmp:
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tmpline = tmp.split("\n")
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in_kernel_options = False
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for line in tmpline:
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if not "=" in line:
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if in_kernel_options:
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break
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if "kernel-options" in line:
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in_kernel_options = True
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continue
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if in_kernel_options:
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feature_def = line.split("=")
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feature_type = feature_def[0].strip()
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feature = feature_def[1].strip()
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desc = get_feature_desc(giturl, feature)
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print "%s: %s" % (feature, desc)
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print "[local]"
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print_feature_descs(layer, "cfg")
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print_feature_descs(layer, "features")
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def base_branches(context):
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"""
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@ -221,6 +221,28 @@ def yocto_kernel_feature_rm_subcommand(args, usage_str):
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yocto_kernel_feature_rm(scripts_path, args[0])
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def yocto_kernel_available_features_list_subcommand(args, usage_str):
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"""
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Command-line handling for listing all the kernel features
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available for use in a BSP. This includes the features present in
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the meta branch(es) of the pointed-to repo(s) as well as the local
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features added in recipe-space to the current BSP as well. The
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real work is done by bsp.kernel.yocto_kernel_available_features_list().
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"""
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logging.debug("yocto_kernel_feature_available_features_list_subcommand")
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parser = optparse.OptionParser(usage = usage_str)
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(options, args) = parser.parse_args(args)
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if len(args) != 1:
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logging.error("Wrong number of arguments, exiting\n")
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parser.print_help()
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sys.exit(1)
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yocto_kernel_available_features_list(scripts_path, args[0])
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subcommands = {
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"config-list": [yocto_kernel_config_list_subcommand,
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yocto_kernel_config_list_usage,
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@ -249,6 +271,9 @@ subcommands = {
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"feature-rm": [yocto_kernel_feature_rm_subcommand,
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yocto_kernel_feature_rm_usage,
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yocto_kernel_feature_rm_help],
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"features-list": [yocto_kernel_available_features_list_subcommand,
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yocto_kernel_available_features_list_usage,
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yocto_kernel_available_features_list_help],
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}
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@ -281,7 +306,7 @@ def main():
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sc = 0
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if args[sc] == "config" or args[sc] == "patch" or \
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args[sc] == "feature":
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args[sc] == "feature" or args[sc] == "features":
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if len(args) < 2 + sc:
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parser.print_help()
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sys.exit(1)
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