[ptxdist] [PATCH] util-linux: add option for building setpriv

[ptxdist] [PATCH] util-linux: add option for building setpriv

[Holger Assmann]

The util-linux implementation of setpriv vastly differs from the one
already provided by busybox: Whilst the latter one only provides
functionality to act on certain Linux capabilities, the version by
util-linux also allows for more sophisticated operations like UID/GID
management or environment handling.

Signed-off-by: Holger Assmann <h.assmann@pengutronix.de>
---
 rules/util-linux.in   | 11 +++++++++++
 rules/util-linux.make |  3 ++-
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/rules/util-linux.in b/rules/util-linux.in
index 6ff817997..5f7fbd269 100644
--- a/rules/util-linux.in
+++ b/rules/util-linux.in
@@ -5,6 +5,7 @@ menuconfig UTIL_LINUX
 	prompt "util-linux                    "
 	select GCCLIBS_GCC_S
 	select LIBC_CRYPT			if UTIL_LINUX_SULOGIN
+	select LIBCAP_NG			if UTIL_LINUX_SETPRIV
 	select HOST_MESON
 	select UTIL_LINUX_LIBBLKID
 	select UTIL_LINUX_LIBUUID		if UTIL_LINUX_MKSWAP_UUID
@@ -555,6 +556,16 @@ config UTIL_LINUX_SWAPON
 comment "BusyBox' swapon is selected!"
 	depends on BUSYBOX_SWAPON
 
+config UTIL_LINUX_SETPRIV
+	bool
+	depends on !BUSYBOX_SETPRIV
+	prompt "setpriv"
+	help
+	  Run a program with different Linux privilege settings.
+
+comment "BusyBox' setpriv is selected!"
+	depends on BUSYBOX_SETPRIV
+
 config UTIL_LINUX_SETSID
 	bool
 	depends on !BUSYBOX_SETSID
diff --git a/rules/util-linux.make b/rules/util-linux.make
index bcf36b195..9e7f0f2f0 100644
--- a/rules/util-linux.make
+++ b/rules/util-linux.make
@@ -143,7 +143,7 @@ UTIL_LINUX_CONF_OPT	:= \
 	-Dbuild-script=disabled \
 	-Dbuild-scriptutils=disabled \
 	-Dbuild-setarch=disabled \
-	-Dbuild-setpriv=disabled \
+	-Dbuild-setpriv=$(call ptx/endis, PTXCONF_UTIL_LINUX_SETPRIV)d \
 	-Dbuild-setterm=$(call ptx/endis, PTXCONF_UTIL_LINUX_SETTERM)d \
 	-Dbuild-su=disabled \
 	-Dbuild-sulogin=$(call ptx/endis, PTXCONF_UTIL_LINUX_SULOGIN)d \
@@ -271,6 +271,7 @@ UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_READPROFILE)	+= sbin/readprofile
 UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_RFKILL)		+= sbin/rfkill
 UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SWAPON)		+= sbin/swapoff sbin/swapon
 UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_PIPESZ)		+= bin/pipesz
+UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SETPRIV)		+= bin/setpriv
 UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SETSID)		+= bin/setsid
 UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SWITCH_ROOT)	+= sbin/switch_root
 UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_UMOUNT)		+= bin/umount
-- 
2.47.3

Re: [ptxdist] [APPLIED] util-linux: add option for building setpriv

[Michael Olbrich]

Thanks, applied as 4d550a475b5b4eb91ab2faaaacd76b821a7c356e.

Michael

[sent from post-receive hook]

On Thu, 04 Dec 2025 14:14:58 +0100, Holger Assmann <h.assmann@pengutronix.de> wrote:
> The util-linux implementation of setpriv vastly differs from the one
> already provided by busybox: Whilst the latter one only provides
> functionality to act on certain Linux capabilities, the version by
> util-linux also allows for more sophisticated operations like UID/GID
> management or environment handling.
> 
> Signed-off-by: Holger Assmann <h.assmann@pengutronix.de>
> Message-Id: <20251127074110.3943109-1-h.assmann@pengutronix.de>
> Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
> 
> diff --git a/rules/util-linux.in b/rules/util-linux.in
> index 6ff817997130..5f7fbd2698c4 100644
> --- a/rules/util-linux.in
> +++ b/rules/util-linux.in
> @@ -5,6 +5,7 @@ menuconfig UTIL_LINUX
>  	prompt "util-linux                    "
>  	select GCCLIBS_GCC_S
>  	select LIBC_CRYPT			if UTIL_LINUX_SULOGIN
> +	select LIBCAP_NG			if UTIL_LINUX_SETPRIV
>  	select HOST_MESON
>  	select UTIL_LINUX_LIBBLKID
>  	select UTIL_LINUX_LIBUUID		if UTIL_LINUX_MKSWAP_UUID
> @@ -555,6 +556,16 @@ config UTIL_LINUX_SWAPON
>  comment "BusyBox' swapon is selected!"
>  	depends on BUSYBOX_SWAPON
>  
> +config UTIL_LINUX_SETPRIV
> +	bool
> +	depends on !BUSYBOX_SETPRIV
> +	prompt "setpriv"
> +	help
> +	  Run a program with different Linux privilege settings.
> +
> +comment "BusyBox' setpriv is selected!"
> +	depends on BUSYBOX_SETPRIV
> +
>  config UTIL_LINUX_SETSID
>  	bool
>  	depends on !BUSYBOX_SETSID
> diff --git a/rules/util-linux.make b/rules/util-linux.make
> index bcf36b195f9a..9e7f0f2f0c0c 100644
> --- a/rules/util-linux.make
> +++ b/rules/util-linux.make
> @@ -143,7 +143,7 @@ UTIL_LINUX_CONF_OPT	:= \
>  	-Dbuild-script=disabled \
>  	-Dbuild-scriptutils=disabled \
>  	-Dbuild-setarch=disabled \
> -	-Dbuild-setpriv=disabled \
> +	-Dbuild-setpriv=$(call ptx/endis, PTXCONF_UTIL_LINUX_SETPRIV)d \
>  	-Dbuild-setterm=$(call ptx/endis, PTXCONF_UTIL_LINUX_SETTERM)d \
>  	-Dbuild-su=disabled \
>  	-Dbuild-sulogin=$(call ptx/endis, PTXCONF_UTIL_LINUX_SULOGIN)d \
> @@ -271,6 +271,7 @@ UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_READPROFILE)	+= sbin/readprofile
>  UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_RFKILL)		+= sbin/rfkill
>  UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SWAPON)		+= sbin/swapoff sbin/swapon
>  UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_PIPESZ)		+= bin/pipesz
> +UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SETPRIV)		+= bin/setpriv
>  UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SETSID)		+= bin/setsid
>  UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_SWITCH_ROOT)	+= sbin/switch_root
>  UTIL_LINUX_BIN-$(PTXCONF_UTIL_LINUX_UMOUNT)		+= bin/umount