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Update NOFORK_NOEXEC.lst

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2017-08-09 19:51:17 +02:00
parent 890bd5de51
commit 3bc2317c61
1 changed files with 12 additions and 4 deletions
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NOFORK_NOEXEC.lst
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@ -39,6 +39,14 @@ for users to keep it waiting for many minutes, whereas running "rm" in shell
is very typical, and speeding up this common use via NOEXEC is useful. is very typical, and speeding up this common use via NOEXEC is useful.
IOW: rm is "interactive", but not "longterm". IOW: rm is "interactive", but not "longterm".
Interesting example of an applet which can be NOFORK but if not,
then should not be NOEXEC, is "usleep". As NOFORK, it amount to simply
nanosleep()ing in the calling program (usually shell). No memory wasted.
But if ran as NOEXEC, it would create a potentially long-term process,
which would be taking more memory because it did not exec
and did not free much of the copied memory of the parent
(COW helps with this only as long as parent doesn't modify its memory).
[ - NOFORK [ - NOFORK
[[ - NOFORK [[ - NOFORK
@ -181,8 +189,8 @@ iostat - longterm: "iostat 1" runs indefinitely
ip - noexec candidate ip - noexec candidate
ipaddr - noexec candidate ipaddr - noexec candidate
ipcalc - noexec. ipcalc -h talks to network ipcalc - noexec. ipcalc -h talks to network
ipcrm - noexec candidate ipcrm - noexec
ipcs - noexec candidate ipcs - noexec
iplink - noexec candidate iplink - noexec candidate
ipneigh - noexec candidate ipneigh - noexec candidate
iproute - noexec candidate iproute - noexec candidate
@ -327,7 +335,7 @@ showkey - interactive, longterm
shred - runner shred - runner
shuf - noexec. runner shuf - noexec. runner
slattach - longterm (may sleep forever), uses bb_common_bufsiz1 slattach - longterm (may sleep forever), uses bb_common_bufsiz1
sleep - runner, longterm sleep - longterm. Could be nofork, if not the problem of "killall sleep" not killing it.
smemcap - runner smemcap - runner
softlimit - noexec. spawner softlimit - noexec. spawner
sort - noexec. runner sort - noexec. runner
@ -397,7 +405,7 @@ unxz - runner
unzip - runner unzip - runner
uptime - noexec. nofork candidate(is getutxent ok?) uptime - noexec. nofork candidate(is getutxent ok?)
users - noexec. nofork candidate(is getutxent ok?) users - noexec. nofork candidate(is getutxent ok?)
usleep - NOFORK usleep - NOFORK. But what about "killall usleep"?
uudecode - runner uudecode - runner
uuencode - runner uuencode - runner
vconfig - noexec. leaks: xsocket+ioctl_or_perror_and_die vconfig - noexec. leaks: xsocket+ioctl_or_perror_and_die