aboutsummaryrefslogtreecommitdiffstats
path: root/meta/classes/kernel-module-split.bbclass
blob: ba9cc1517e5df643f5d5e3ec5dc0a20f4113e876 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
pkg_postinst_modules () {
if [ -z "$D" ]; then
	depmod -a ${KERNEL_VERSION}
else
	# image.bbclass will call depmodwrapper after everything is installed,
	# no need to do it here as well
	:
fi
}

pkg_postrm_modules () {
if [ -z "$D" ]; then
	depmod -a ${KERNEL_VERSION}
else
	depmodwrapper -a -b $D ${KERNEL_VERSION}
fi
}

autoload_postinst_fragment() {
if [ x"$D" = "x" ]; then
	modprobe %s || true
fi
}

PACKAGE_WRITE_DEPS += "kmod-native depmodwrapper-cross"

do_install_append() {
	install -d ${D}${sysconfdir}/modules-load.d/ ${D}${sysconfdir}/modprobe.d/
}

PACKAGESPLITFUNCS_prepend = "split_kernel_module_packages "

KERNEL_MODULES_META_PACKAGE ?= "kernel-modules"

KERNEL_MODULE_PACKAGE_PREFIX ?= ""
KERNEL_MODULE_PACKAGE_SUFFIX ?= "-${KERNEL_VERSION}"
KERNEL_MODULE_PROVIDE_VIRTUAL ?= "1"

python split_kernel_module_packages () {
    import re

    modinfoexp = re.compile("([^=]+)=(.*)")

    def extract_modinfo(file):
        import tempfile, subprocess
        tempfile.tempdir = d.getVar("WORKDIR")
        tf = tempfile.mkstemp()
        tmpfile = tf[1]
        cmd = "%sobjcopy -j .modinfo -O binary %s %s" % (d.getVar("HOST_PREFIX") or "", file, tmpfile)
        subprocess.call(cmd, shell=True)
        f = open(tmpfile)
        l = f.read().split("\000")
        f.close()
        os.close(tf[0])
        os.unlink(tmpfile)
        vals = {}
        for i in l:
            m = modinfoexp.match(i)
            if not m:
                continue
            vals[m.group(1)] = m.group(2)
        return vals

    def frob_metadata(file, pkg, pattern, format, basename):
        vals = extract_modinfo(file)

        dvar = d.getVar('PKGD')

        # If autoloading is requested, output /etc/modules-load.d/<name>.conf and append
        # appropriate modprobe commands to the postinst
        autoloadlist = (d.getVar("KERNEL_MODULE_AUTOLOAD") or "").split()
        autoload = d.getVar('module_autoload_%s' % basename)
        if autoload and autoload == basename:
            bb.warn("module_autoload_%s was replaced by KERNEL_MODULE_AUTOLOAD for cases where basename == module name, please drop it" % basename)
        if autoload and basename not in autoloadlist:
            bb.warn("module_autoload_%s is defined but '%s' isn't included in KERNEL_MODULE_AUTOLOAD, please add it there" % (basename, basename))
        if basename in autoloadlist:
            name = '%s/etc/modules-load.d/%s.conf' % (dvar, basename)
            f = open(name, 'w')
            if autoload:
                for m in autoload.split():
                    f.write('%s\n' % m)
            else:
                f.write('%s\n' % basename)
            f.close()
            postinst = d.getVar('pkg_postinst_%s' % pkg)
            if not postinst:
                bb.fatal("pkg_postinst_%s not defined" % pkg)
            postinst += d.getVar('autoload_postinst_fragment') % (autoload or basename)
            d.setVar('pkg_postinst_%s' % pkg, postinst)

        # Write out any modconf fragment
        modconflist = (d.getVar("KERNEL_MODULE_PROBECONF") or "").split()
        modconf = d.getVar('module_conf_%s' % basename)
        if modconf and basename in modconflist:
            name = '%s/etc/modprobe.d/%s.conf' % (dvar, basename)
            f = open(name, 'w')
            f.write("%s\n" % modconf)
            f.close()
        elif modconf:
            bb.error("Please ensure module %s is listed in KERNEL_MODULE_PROBECONF since module_conf_%s is set" % (basename, basename))

        files = d.getVar('FILES_%s' % pkg)
        files = "%s /etc/modules-load.d/%s.conf /etc/modprobe.d/%s.conf" % (files, basename, basename)
        d.setVar('FILES_%s' % pkg, files)

        if "description" in vals:
            old_desc = d.getVar('DESCRIPTION_' + pkg) or ""
            d.setVar('DESCRIPTION_' + pkg, old_desc + "; " + vals["description"])

        rdepends = bb.utils.explode_dep_versions2(d.getVar('RDEPENDS_' + pkg) or "")
        modinfo_deps = []
        if "depends" in vals and vals["depends"] != "":
            for dep in vals["depends"].split(","):
                on = legitimize_package_name(dep)
                dependency_pkg = format % on
                modinfo_deps.append(dependency_pkg)
        for dep in modinfo_deps:
            if not dep in rdepends:
                rdepends[dep] = []
        d.setVar('RDEPENDS_' + pkg, bb.utils.join_deps(rdepends, commasep=False))

        # Avoid automatic -dev recommendations for modules ending with -dev.
        d.setVarFlag('RRECOMMENDS_' + pkg, 'nodeprrecs', 1)

        # Provide virtual package without postfix
        providevirt = d.getVar('KERNEL_MODULE_PROVIDE_VIRTUAL')
        if providevirt == "1":
           postfix = format.split('%s')[1]
           d.setVar('RPROVIDES_' + pkg, pkg.replace(postfix, ''))

    module_regex = '^(.*)\.k?o$'

    module_pattern_prefix = d.getVar('KERNEL_MODULE_PACKAGE_PREFIX')
    module_pattern_suffix = d.getVar('KERNEL_MODULE_PACKAGE_SUFFIX')
    module_pattern = module_pattern_prefix + 'kernel-module-%s' + module_pattern_suffix

    postinst = d.getVar('pkg_postinst_modules')
    postrm = d.getVar('pkg_postrm_modules')

    modules = do_split_packages(d, root='/lib/modules', file_regex=module_regex, output_pattern=module_pattern, description='%s kernel module', postinst=postinst, postrm=postrm, recursive=True, hook=frob_metadata, extra_depends='kernel-%s' % (d.getVar("KERNEL_VERSION")))
    if modules:
        metapkg = d.getVar('KERNEL_MODULES_META_PACKAGE')
        d.appendVar('RDEPENDS_' + metapkg, ' '+' '.join(modules))

    # If modules-load.d and modprobe.d are empty at this point, remove them to
    # avoid warnings. removedirs only raises an OSError if an empty
    # directory cannot be removed.
    dvar = d.getVar('PKGD')
    for dir in ["%s/etc/modprobe.d" % (dvar), "%s/etc/modules-load.d" % (dvar), "%s/etc" % (dvar)]:
        if len(os.listdir(dir)) == 0:
            os.rmdir(dir)
}

do_package[vardeps] += '${@" ".join(map(lambda s: "module_conf_" + s, (d.getVar("KERNEL_MODULE_PROBECONF") or "").split()))}'