Re: [9fans] `test -x` returns wrong results for directories
Looks to me like access(2) is not doing the right thing for directory execute (=search) permission. -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tdd7a9b1b32d01f54-M4da73ba68bd93f0827b0a15c Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
[9fans] `test -x` returns wrong results for directories
in rc-httpd, i rely on `test -x` to check if a directory is searchable. this
works in plan9port, 9base, inferno (with root from host fs), gnu coreutils, and
freebsd. it doesn't work in 9front, nor in labs plan 9. (the labs version
tested was a live-cd from 2010.)
term% test -x static ; echo $status
test 13436: false
term% ls -ld static
d-rwxrwxr-x M 24 ethan adm 0 Mar 15 14:58 static
term% man 1 test | grep -- -x
-x fileTrue if the file exists and has execute permis-
term%
the word 'wrong' in the subject may be a little strong, but there doesn't seem
to be an alternative test for searchable directories other than mucking about
with ls -l | sed or awk. test(1) has nothing to say on the matter.
for anyone using rc-httpd, the intended logic in rc-httpd/handlers/dir-index is
this:
if(! test -r $full_path -a -x $full_path) {
a suitable workaround is to remove ` -a -x $full_path`.
9front's version of rc-http has a workaround which may break when test is fixed.
/rc/bin/rc-httpd/handlers/dir-index:/-x
if(! test -r $full_path -x $full_path){
in plan 9 and gnu coreutils, this effectively replaces the logical and (-a)
with a logical or. freebsd reports an error, 'unexpected operator'.
--
9fans: 9fans
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[9fans] Re: HOWTO: Net booting Plan 9 on RPi 3s and 4s
there is a cleaner patch now: /n/sources/patch/rpi-netboot-dhcpd On Wed, Jun 3, 2020 at 6:18 PM Skip Tavakkolian wrote: > The patch is on 9p.io: > > /n/sources/patch/dhcpd-rpi-pxeboot > > > On Wed, Jun 3, 2020 at 12:43 PM Skip Tavakkolian < > skip.tavakkol...@gmail.com> wrote: > >> Note that RPi 4 DHCP requests include a parameter request for TFTP Server >> Name (66). There is a link in the doc to the diffs for >> /sys/src/cmd/ip/dhcpd/dhcpd.c. I'll submit a patch to 9p.io soon. >> >> On Wed, Jun 3, 2020 at 11:26 AM Skip Tavakkolian < >> skip.tavakkol...@gmail.com> wrote: >> >>> >>> FYI, I've updated the HOWTO to include RPi4's. It's here: >>> >>> >>> https://docs.google.com/document/d/1hgcsAgk_FJRYW5r7LVeY23sTZN_giUit-8ra-dlW9ng >>> >>> >>> -- 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Teeceb2ca38619b36-M783c8cedce3d09ae17286b02 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription
