free,stat: make NOEXEC

pkill/pgrep/pidof uncovered another quirk: what about noexec's _process names_? Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
2017-08-07 18:18:09 +02:00
parent 316d38e258
commit 248a67fb75
8 changed files with 31 additions and 12 deletions
--- a/procps/pidof.c
+++ b/procps/pidof.c
@@ -30,6 +30,10 @@
 //config:	of the pidof, in other words the calling shell or shell script.

 //applet:IF_PIDOF(APPLET(pidof, BB_DIR_BIN, BB_SUID_DROP))
+/* can't be noexec: can find _itself_ under wrong name, since after fork only,
+ * /proc/PID/cmdline and comm are wrong! Can fix comm (prctl(PR_SET_NAME)),
+ * but cmdline?
+ */

 //kbuild:lib-$(CONFIG_PIDOF) += pidof.o