base-passwd/useradd: Various improvements to useradd with RSS
Currently there are multiple issues with useradd: * If base-passwd rebuilds, it wipes out recipe specific user/group additions to sysroots and causes errors * If recipe A adds a user and recipe B depends on A, it can't see any of the users/groups A adds. This patch changes base-passwd so it always works as a postinst script within the sysroot and copies in the master files, then runs any postinst-useradd-* scripts afterwards to add additional user/groups. The postinst-useradd-* scripts are tweaked so that if /etc/passwd doesn't exist they just exit, knowning they'll be executed later. We also add a dummy entry to the dummy passwd file from pseudo so we can avoid this too. There is a problem where if recipe A adds a user and recipe B depends on A but doesn't care about users, it may not have a dependency on the useradd/groupadd tools which would therefore not be available in B's sysroot. We therefore also tweak postinst-useradd-* scripts so that if the tools aren't present we simply don't add users. If you need the users, you add a dependency on the tools in the recipe and they'll be added. We add postinst-* to SSTATE_SCAN_FILES since almost any postinst script of this kind is going to need relocation help. We also ensure that the postinst-useradd script is written into the sstate object as the current script was only being added in a recipe local way. Thanks to Peter Kjellerstedt <pkj@axis.com> and Patrick Ohly for some pieces of this patch. [Yocto #11124] (From OE-Core rev: 1b5afaf437f7a1107d4edca8eeb668b9618a5488) Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -31,7 +31,7 @@ SSTATE_DUPWHITELIST += "${STAGING_ETCDIR_NATIVE}/sgml ${STAGING_DATADIR_NATIVE}/
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# Archive the sources for many architectures in one deploy folder
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SSTATE_DUPWHITELIST += "${DEPLOY_DIR_SRC}"
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SSTATE_SCAN_FILES ?= "*.la *-config *_config"
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SSTATE_SCAN_FILES ?= "*.la *-config *_config postinst-*"
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SSTATE_SCAN_CMD ??= 'find ${SSTATE_BUILDDIR} \( -name "${@"\" -o -name \"".join(d.getVar("SSTATE_SCAN_FILES").split())}" \) -type f'
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SSTATE_SCAN_CMD_NATIVE ??= 'grep -Irl -e ${RECIPE_SYSROOT} -e ${RECIPE_SYSROOT_NATIVE} ${SSTATE_BUILDDIR}'
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@ -106,6 +106,21 @@ useradd_sysroot () {
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# before do_prepare_recipe_sysroot
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D=${STAGING_DIR_TARGET}
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# base-passwd's postinst may not have run yet in which case we'll get called later, just exit.
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# Beware that in some cases we might see the fake pseudo passwd here, in which case we also must
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# exit.
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if [ ! -f $D${sysconfdir}/passwd ] ||
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grep -q this-is-the-pseudo-passwd $D${sysconfdir}/passwd; then
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exit 0
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fi
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# It is also possible we may be in a recipe which doesn't have useradd dependencies and hence the
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# useradd/groupadd tools are unavailable. If there is no dependency, we assume we don't want to
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# create users in the sysroot
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if ! command -v useradd; then
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exit 0
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fi
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# Add groups and users defined for all recipe packages
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GROUPADD_PARAM="${@get_all_cmd_params(d, 'groupadd')}"
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USERADD_PARAM="${@get_all_cmd_params(d, 'useradd')}"
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@ -122,6 +137,7 @@ python useradd_sysroot_sstate () {
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if task == "package_setscene":
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bb.build.exec_func("useradd_sysroot", d)
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elif task == "prepare_recipe_sysroot":
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# Used to update this recipe's own sysroot so the user/groups are available to do_install
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scriptfile = d.expand("${RECIPE_SYSROOT}${bindir}/postinst-useradd-${PN}")
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bb.utils.mkdirhier(os.path.dirname(scriptfile))
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with open(scriptfile, 'w') as script:
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@ -130,12 +146,23 @@ python useradd_sysroot_sstate () {
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script.write("useradd_sysroot\n")
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os.chmod(scriptfile, 0o755)
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bb.build.exec_func("useradd_sysroot", d)
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elif task == "populate_sysroot":
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# Used when installed in dependent task sysroots
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scriptfile = d.expand("${SYSROOT_DESTDIR}${bindir}/postinst-useradd-${PN}")
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bb.utils.mkdirhier(os.path.dirname(scriptfile))
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with open(scriptfile, 'w') as script:
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script.write("#!/bin/sh\n")
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bb.data.emit_func("useradd_sysroot", script, d)
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script.write("useradd_sysroot\n")
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os.chmod(scriptfile, 0o755)
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}
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do_prepare_recipe_sysroot[postfuncs] += "${SYSROOTFUNC}"
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SYSROOTFUNC_class-target = "useradd_sysroot_sstate"
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SYSROOTFUNC = ""
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SYSROOT_PREPROCESS_FUNCS += "${SYSROOTFUNC}"
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SSTATEPREINSTFUNCS_append_class-target = " useradd_sysroot_sstate"
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do_package_setscene[depends] += "${USERADDSETSCENEDEPS}"
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@ -43,16 +43,32 @@ do_install () {
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install -p -m 644 ${S}/debian/copyright ${D}${docdir}/${BPN}/
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}
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basepasswd_sysroot_postinst() {
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#!/bin/sh
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# Install passwd.master and group.master to sysconfdir
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install -d -m 755 ${STAGING_DIR_TARGET}${sysconfdir}
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for i in passwd group; do
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install -p -m 644 ${STAGING_DIR_TARGET}${datadir}/base-passwd/\$i.master \
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${STAGING_DIR_TARGET}${sysconfdir}/\$i
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done
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# Run any useradd postinsts
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for script in ${STAGING_DIR_TARGET}${bindir}/postinst-useradd-*; do
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if [ -f \$script ]; then
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\$script
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fi
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done
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}
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SYSROOT_DIRS += "${sysconfdir}"
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SYSROOT_PREPROCESS_FUNCS += "base_passwd_tweaksysroot"
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base_passwd_tweaksysroot () {
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# Install passwd.master and group.master to sysconfdir
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install -d -m 755 ${SYSROOT_DESTDIR}${sysconfdir}
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for i in passwd group; do
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install -p -m 644 ${SYSROOT_DESTDIR}${datadir}/base-passwd/$i.master \
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${SYSROOT_DESTDIR}${sysconfdir}/$i
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done
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mkdir -p ${SYSROOT_DESTDIR}${bindir}
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dest=${SYSROOT_DESTDIR}${bindir}/postinst-${PN}
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echo "${basepasswd_sysroot_postinst}" > $dest
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chmod 0755 $dest
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}
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python populate_packages_prepend() {
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@ -1,2 +1,3 @@
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root::0:0:root:/home/root:/bin/sh
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pseudopasswd:*:1:1:this-is-the-pseudo-passwd:/nonexistent:/bin/sh
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nobody:*:65534:65534:nobody:/nonexistent:/bin/sh
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