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adjtimex: make it NOFORK

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2017-08-06 20:00:21 +02:00
parent c8e29317e9
commit ed7d118dd0
2 changed files with 7 additions and 2 deletions
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2
NOFORK_NOEXEC.lst
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@ -39,7 +39,7 @@ acpid - daemon
add-shell
addgroup
adduser
adjtimex
adjtimex - NOFORK
ar - runner
arch - NOFORK
arp - complex, rare

7
miscutils/adjtimex.c
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@ -18,7 +18,7 @@
//config: Adjtimex reads and optionally sets adjustment parameters for
//config: the Linux clock adjustment algorithm.
//applet:IF_ADJTIMEX(APPLET(adjtimex, BB_DIR_SBIN, BB_SUID_DROP))
//applet:IF_ADJTIMEX(APPLET_NOFORK(adjtimex, adjtimex, BB_DIR_SBIN, BB_SUID_DROP, adjtimex))
//kbuild:lib-$(CONFIG_ADJTIMEX) += adjtimex.o
@ -116,6 +116,11 @@ int adjtimex_main(int argc UNUSED_PARAM, char **argv)
txc.modes |= ADJ_TICK;
}
/* It's NOFORK applet because the code is very simple:
* just some printf. No opens, no allocs.
* If you need to make it more complex, feel free to downgrade to NOEXEC
*/
ret = adjtimex(&txc);
if (ret < 0)
bb_perror_nomsg_and_die();