summaryrefslogtreecommitdiff
path: root/meta/classes/useradd.bbclass
blob: c960656f02b3d11e5bb08dca259df3946f96aeaf (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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
inherit useradd_base

# base-passwd-cross provides the default passwd and group files in the
# target sysroot, and shadow -native and -sysroot provide the utilities
# and support files needed to add and modify user and group accounts
DEPENDS_append = "${USERADDDEPENDS}"
USERADDDEPENDS = " base-files shadow-native shadow-sysroot shadow"
USERADDDEPENDS_class-cross = ""
USERADDDEPENDS_class-native = ""
USERADDDEPENDS_class-nativesdk = ""

# This preinstall function can be run in four different contexts:
#
# a) Before do_install
# b) At do_populate_sysroot_setscene when installing from sstate packages
# c) As the preinst script in the target package at do_rootfs time
# d) As the preinst script in the target package on device as a package upgrade
#
useradd_preinst () {
OPT=""
SYSROOT=""

if test "x$D" != "x"; then
	# Installing into a sysroot
	SYSROOT="$D"
	OPT="--root $D"

	# Make sure login.defs is there, this is to make debian package backend work
	# correctly while doing rootfs.
	# The problem here is that if /etc/login.defs is treated as a config file for
	# shadow package, then while performing preinsts for packages that depend on
	# shadow, there might only be /etc/login.def.dpkg-new there in root filesystem.
	if [ ! -e $D${sysconfdir}/login.defs -a -e $D${sysconfdir}/login.defs.dpkg-new ]; then
	    cp $D${sysconfdir}/login.defs.dpkg-new $D${sysconfdir}/login.defs
	fi

	# user/group lookups should match useradd/groupadd --root
	export PSEUDO_PASSWD="$SYSROOT:${STAGING_DIR_NATIVE}"
fi

# If we're not doing a special SSTATE/SYSROOT install
# then set the values, otherwise use the environment
if test "x$UA_SYSROOT" = "x"; then
	# Installing onto a target
	# Add groups and users defined only for this package
	GROUPADD_PARAM="${GROUPADD_PARAM}"
	USERADD_PARAM="${USERADD_PARAM}"
	GROUPMEMS_PARAM="${GROUPMEMS_PARAM}"
fi

# Perform group additions first, since user additions may depend
# on these groups existing
if test "x`echo $GROUPADD_PARAM | tr -d '[:space:]'`" != "x"; then
	echo "Running groupadd commands..."
	# Invoke multiple instances of groupadd for parameter lists
	# separated by ';'
	opts=`echo "$GROUPADD_PARAM" | cut -d ';' -f 1`
	remaining=`echo "$GROUPADD_PARAM" | cut -d ';' -f 2-`
	while test "x$opts" != "x"; do
		perform_groupadd "$SYSROOT" "$OPT $opts" 10
		if test "x$opts" = "x$remaining"; then
			break
		fi
		opts=`echo "$remaining" | cut -d ';' -f 1`
		remaining=`echo "$remaining" | cut -d ';' -f 2-`
	done
fi 

if test "x`echo $USERADD_PARAM | tr -d '[:space:]'`" != "x"; then
	echo "Running useradd commands..."
	# Invoke multiple instances of useradd for parameter lists
	# separated by ';'
	opts=`echo "$USERADD_PARAM" | cut -d ';' -f 1`
	remaining=`echo "$USERADD_PARAM" | cut -d ';' -f 2-`
	while test "x$opts" != "x"; do
		perform_useradd "$SYSROOT" "$OPT $opts" 10
		if test "x$opts" = "x$remaining"; then
			break
		fi
		opts=`echo "$remaining" | cut -d ';' -f 1`
		remaining=`echo "$remaining" | cut -d ';' -f 2-`
	done
fi

if test "x`echo $GROUPMEMS_PARAM | tr -d '[:space:]'`" != "x"; then
	echo "Running groupmems commands..."
	# Invoke multiple instances of groupmems for parameter lists
	# separated by ';'
	opts=`echo "$GROUPMEMS_PARAM" | cut -d ';' -f 1`
	remaining=`echo "$GROUPMEMS_PARAM" | cut -d ';' -f 2-`
	while test "x$opts" != "x"; do
		perform_groupmems "$SYSROOT" "$OPT $opts" 10
		if test "x$opts" = "x$remaining"; then
			break
		fi
		opts=`echo "$remaining" | cut -d ';' -f 1`
		remaining=`echo "$remaining" | cut -d ';' -f 2-`
	done
fi
}

useradd_sysroot () {
	# Pseudo may (do_install) or may not (do_populate_sysroot_setscene) be running 
	# at this point so we're explicit about the environment so pseudo can load if 
	# not already present.
	export PSEUDO="${FAKEROOTENV} PSEUDO_LOCALSTATEDIR=${STAGING_DIR_TARGET}${localstatedir}/pseudo ${STAGING_DIR_NATIVE}${bindir}/pseudo"

	# Explicitly set $D since it isn't set to anything
	# before do_install
	D=${STAGING_DIR_TARGET}

	# Add groups and users defined for all recipe packages
	GROUPADD_PARAM="${@get_all_cmd_params(d, 'groupadd')}"
	USERADD_PARAM="${@get_all_cmd_params(d, 'useradd')}"
	GROUPMEMS_PARAM="${@get_all_cmd_params(d, 'groupmems')}"

	# Tell the system to use the environment vars
	UA_SYSROOT=1

	useradd_preinst
}

useradd_sysroot_sstate () {
	if [ "${BB_CURRENTTASK}" = "package_setscene" -o "${BB_CURRENTTASK}" = "populate_sysroot_setscene" ]
	then
		useradd_sysroot
	fi
}

do_install[prefuncs] += "${SYSROOTFUNC}"
SYSROOTFUNC = "useradd_sysroot"
SYSROOTFUNC_class-cross = ""
SYSROOTFUNC_class-native = ""
SYSROOTFUNC_class-nativesdk = ""
SSTATEPREINSTFUNCS += "${SYSROOTPOSTFUNC}"
SYSROOTPOSTFUNC = "useradd_sysroot_sstate"
SYSROOTPOSTFUNC_class-cross = ""
SYSROOTPOSTFUNC_class-native = ""
SYSROOTPOSTFUNC_class-nativesdk = ""

USERADDSETSCENEDEPS = "${MLPREFIX}base-passwd:do_populate_sysroot_setscene pseudo-native:do_populate_sysroot_setscene shadow-native:do_populate_sysroot_setscene ${MLPREFIX}shadow-sysroot:do_populate_sysroot_setscene"
USERADDSETSCENEDEPS_class-cross = ""
USERADDSETSCENEDEPS_class-native = ""
USERADDSETSCENEDEPS_class-nativesdk = ""
do_package_setscene[depends] += "${USERADDSETSCENEDEPS}"
do_populate_sysroot_setscene[depends] += "${USERADDSETSCENEDEPS}"

# Recipe parse-time sanity checks
def update_useradd_after_parse(d):
    useradd_packages = d.getVar('USERADD_PACKAGES', True)

    if not useradd_packages:
        raise bb.build.FuncFailed("%s inherits useradd but doesn't set USERADD_PACKAGES" % d.getVar('FILE', False))

    for pkg in useradd_packages.split():
        if not d.getVar('USERADD_PARAM_%s' % pkg, True) and not d.getVar('GROUPADD_PARAM_%s' % pkg, True) and not d.getVar('GROUPMEMS_PARAM_%s' % pkg, True):
            bb.fatal("%s inherits useradd but doesn't set USERADD_PARAM, GROUPADD_PARAM or GROUPMEMS_PARAM for package %s" % (d.getVar('FILE', False), pkg))

python __anonymous() {
    if not bb.data.inherits_class('nativesdk', d) \
        and not bb.data.inherits_class('native', d):
        update_useradd_after_parse(d)
}

# Return a single [GROUP|USER]ADD_PARAM formatted string which includes the
# [group|user]add parameters for all USERADD_PACKAGES in this recipe
def get_all_cmd_params(d, cmd_type):
    import string
    
    param_type = cmd_type.upper() + "_PARAM_%s"
    params = []

    useradd_packages = d.getVar('USERADD_PACKAGES', True) or ""
    for pkg in useradd_packages.split():
        param = d.getVar(param_type % pkg, True)
        if param:
            params.append(param)

    return "; ".join(params)

# Adds the preinst script into generated packages
fakeroot python populate_packages_prepend () {
    def update_useradd_package(pkg):
        bb.debug(1, 'adding user/group calls to preinst for %s' % pkg)

        """
        useradd preinst is appended here because pkg_preinst may be
        required to execute on the target. Not doing so may cause
        useradd preinst to be invoked twice, causing unwanted warnings.
        """
        preinst = d.getVar('pkg_preinst_%s' % pkg, True) or d.getVar('pkg_preinst', True)
        if not preinst:
            preinst = '#!/bin/sh\n'
        preinst += 'bbnote () {\n\techo "NOTE: $*"\n}\n'
        preinst += 'bbwarn () {\n\techo "WARNING: $*"\n}\n'
        preinst += 'bbfatal () {\n\techo "ERROR: $*"\n\texit 1\n}\n'
        preinst += 'perform_groupadd () {\n%s}\n' % d.getVar('perform_groupadd', True)
        preinst += 'perform_useradd () {\n%s}\n' % d.getVar('perform_useradd', True)
        preinst += 'perform_groupmems () {\n%s}\n' % d.getVar('perform_groupmems', True)
        preinst += d.getVar('useradd_preinst', True)
        d.setVar('pkg_preinst_%s' % pkg, preinst)

        # RDEPENDS setup
        rdepends = d.getVar("RDEPENDS_%s" % pkg, True) or ""
        rdepends += ' ' + d.getVar('MLPREFIX', False) + 'base-passwd'
        rdepends += ' ' + d.getVar('MLPREFIX', False) + 'shadow'
        # base-files is where the default /etc/skel is packaged
        rdepends += ' ' + d.getVar('MLPREFIX', False) + 'base-files'
        d.setVar("RDEPENDS_%s" % pkg, rdepends)

    # Add the user/group preinstall scripts and RDEPENDS requirements
    # to packages specified by USERADD_PACKAGES
    if not bb.data.inherits_class('nativesdk', d) \
        and not bb.data.inherits_class('native', d):
        useradd_packages = d.getVar('USERADD_PACKAGES', True) or ""
        for pkg in useradd_packages.split():
            update_useradd_package(pkg)
}

# Use the following to extend the useradd with custom functions
USERADDEXTENSION ?= ""

inherit ${USERADDEXTENSION}