[ast-developers] mktemp(1)'s -p not working with O_XATTR dirs

[Simon Toedt]

I think I found a bug in mktemp(1)'s -p option:
If I use mktemp(1) with -p in an O_XATTR directory it returns a path
in /tmp instead:

/bin/ksh -c 'builtin mktemp ; touch x1 ; cd -@ x1 ; mktemp -p "$PWD" ;
:'
/tmp/tmp246Y9N0.EZ3

I would've expected the path to be like this one:
/dev/file/xattr@/home/stoe/x1//@//tmp246Y9N0.EZ3

Simon

[Glenn Fowler]

i don't really care for the utility of -p but it seems to be working as
advertised
try something like: mktemp myprefix "$PWD" or mktemp "" "$PWD"

mktemp --?p
-p, --default=directory
Use directory if the TMPDIR environment variable is not
defined. Implies --tmp.

gnu man mktemp
-p DIR use DIR as a prefix; implies -t [deprecated]

-t interpret TEMPLATE as a single file name component, relative
to a directory: $TMPDIR, if set; else the
directory specified via -p; else /tmp [deprecated]

Post by Simon Toedt
If I use mktemp(1) with -p in an O_XATTR directory it returns a path
:'
/tmp/tmp246Y9N0.EZ3
Simon
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[Simon Toedt]

Post by Glenn Fowler
i don't really care for the utility of -p but it seems to be working as
advertised
try something like: mktemp myprefix "$PWD"

ksh -c 'builtin mktemp ; touch x1 ; cd -@ x1 ; mktemp myprefix "$PWD"
; :'
/tmp/myprejFqre.FAL

Post by Glenn Fowler
or mktemp "" "$PWD"

does not work either

Post by Glenn Fowler
mktemp --?p
-p, --default=directory
Use directory if the TMPDIR environment variable is not
defined. Implies --tmp.
gnu man mktemp
-p DIR use DIR as a prefix; implies -t [deprecated]
-t interpret TEMPLATE as a single file name component, relative
to a directory: $TMPDIR, if set; else the
directory specified via -p; else /tmp [deprecated]

What I wish to archive is to get a temporary file in the O_XATTR dir
so that the temp file disappears when I remove the underlying parent
file.

And I am confused: Why does this not work? I'd expect a temporary file
in /dev/file/xattr@/home/stoe/x1//@//, but instead always get one in
/tmp:
env - /bin/ksh -x -c 'builtin mktemp ; touch x1 ; cd -@ x1 ;
TMPDIR="$PWD" ; mktemp "" "$PWD" ; :'
+ builtin mktemp
+ touch x1
+ cd -@ x1
+ TMPDIR=/dev/file/xattr@/home/stoe/x1//@//
+ mktemp '' /dev/file/xattr@/home/stoe/x1//@//
/tmp/8nR0snQsJI.JID
+ :
env - /bin/ksh -x -c 'builtin mktemp ; touch x1 ; cd -@ x1 ;
TMPDIR="$PWD" ; mktemp ; :'
+ builtin mktemp
+ touch x1
+ cd -@ x1
+ TMPDIR=/dev/file/xattr@/home/stoe/x1//@//
+ mktemp
/tmp/tmp5Sy9yoF.syY
+ :

Simon

[Glenn Fowler]

what does this output (-u prints the tmp file but does not create)
--
set -x
mktemp --?-version
cd
print $PWD
mktemp -u "" "$PWD"
touch x1
cd -@ x1
mktemp -u "" "$PWD"
cd -
rm x1

Post by Simon Toedt

Post by Glenn Fowler
i don't really care for the utility of -p but it seems to be working as
advertised
try something like: mktemp myprefix "$PWD"

; :'
/tmp/myprejFqre.FAL

Post by Glenn Fowler
or mktemp "" "$PWD"

does not work either

Post by Glenn Fowler
mktemp --?p
-p, --default=directory
Use directory if the TMPDIR environment variable is not
defined. Implies --tmp.
gnu man mktemp
-p DIR use DIR as a prefix; implies -t [deprecated]
-t interpret TEMPLATE as a single file name component,

relative

Post by Glenn Fowler
to a directory: $TMPDIR, if set; else the
directory specified via -p; else /tmp [deprecated]

What I wish to archive is to get a temporary file in the O_XATTR dir
so that the temp file disappears when I remove the underlying parent
file.
And I am confused: Why does this not work? I'd expect a temporary file
TMPDIR="$PWD" ; mktemp "" "$PWD" ; :'
+ builtin mktemp
+ touch x1
/tmp/8nR0snQsJI.JID
TMPDIR="$PWD" ; mktemp ; :'
+ builtin mktemp
+ touch x1
+ mktemp
/tmp/tmp5Sy9yoF.syY
Simon

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[Roland Mainz]

Post by Glenn Fowler

Post by Simon Toedt

Post by Glenn Fowler
i don't really care for the utility of -p but it seems to be working as
advertised
try something like: mktemp myprefix "$PWD"

; :'
/tmp/myprejFqre.FAL

Post by Glenn Fowler
or mktemp "" "$PWD"

does not work either

Post by Glenn Fowler
mktemp --?p
-p, --default=directory
Use directory if the TMPDIR environment variable is not
defined. Implies --tmp.
gnu man mktemp
-p DIR use DIR as a prefix; implies -t [deprecated]
-t interpret TEMPLATE as a single file name component, relative
to a directory: $TMPDIR, if set; else the
directory specified via -p; else /tmp [deprecated]

What I wish to archive is to get a temporary file in the O_XATTR dir
so that the temp file disappears when I remove the underlying parent
file.
And I am confused: Why does this not work? I'd expect a temporary file
TMPDIR="$PWD" ; mktemp "" "$PWD" ; :'
+ builtin mktemp
+ touch x1
/tmp/8nR0snQsJI.JID
TMPDIR="$PWD" ; mktemp ; :'
+ builtin mktemp
+ touch x1
+ mktemp
/tmp/tmp5Sy9yoF.syY

what does this output (-u prints the tmp file but does not create)
--
set -x
mktemp --?-version
cd
print $PWD
mktemp -u "" "$PWD"
touch x1
mktemp -u "" "$PWD"
cd -
rm x1

The output of that script looks like this with ast-ksh.2013-10-10 on
Solaris 11/B145/AMD64/64bit:
-- snip --
$ env - ~/bin/ksh xxx.sh
+ mktemp '--?-version'
version mktemp (AT&T Research) 2012-12-12
+ cd
xxx.sh[3]: cd: bad directory
+ print /home/test001/tmp
/home/test001/tmp
+ mktemp -u '' /home/test001/tmp
/home/test001/tmp/4sfuBB7Hll.llT
+ touch x1
+ cd -@ x1
+ mktemp -u '' /dev/file/xattr@/home/test001/tmp/x1//@//
/tmp/hWzxGz8X0v.0vJ
+ cd -
/home/test001/tmp
+ rm x1
-- snip --

----

Bye,
Roland

[Roland Mainz]

Post by Roland Mainz

Post by Glenn Fowler

Post by Simon Toedt

Post by Glenn Fowler
i don't really care for the utility of -p but it seems to be working as
advertised
try something like: mktemp myprefix "$PWD"

; :'
/tmp/myprejFqre.FAL

Post by Glenn Fowler
or mktemp "" "$PWD"

does not work either

Post by Glenn Fowler
mktemp --?p
-p, --default=directory
Use directory if the TMPDIR environment variable is not
defined. Implies --tmp.
gnu man mktemp
-p DIR use DIR as a prefix; implies -t [deprecated]
-t interpret TEMPLATE as a single file name component, relative
to a directory: $TMPDIR, if set; else the
directory specified via -p; else /tmp [deprecated]

What I wish to archive is to get a temporary file in the O_XATTR dir
so that the temp file disappears when I remove the underlying parent
file.
And I am confused: Why does this not work? I'd expect a temporary file
TMPDIR="$PWD" ; mktemp "" "$PWD" ; :'
+ builtin mktemp
+ touch x1
/tmp/8nR0snQsJI.JID
TMPDIR="$PWD" ; mktemp ; :'
+ builtin mktemp
+ touch x1
+ mktemp
/tmp/tmp5Sy9yoF.syY

what does this output (-u prints the tmp file but does not create)
--
set -x
mktemp --?-version
cd
print $PWD
mktemp -u "" "$PWD"
touch x1
mktemp -u "" "$PWD"
cd -
rm x1

The output of that script looks like this with ast-ksh.2013-10-10 on
-- snip --
$ env - ~/bin/ksh xxx.sh
+ mktemp '--?-version'
version mktemp (AT&T Research) 2012-12-12
+ cd
xxx.sh[3]: cd: bad directory
+ print /home/test001/tmp
/home/test001/tmp
+ mktemp -u '' /home/test001/tmp
/home/test001/tmp/4sfuBB7Hll.llT
+ touch x1
/tmp/hWzxGz8X0v.0vJ
+ cd -
/home/test001/tmp
+ rm x1
-- snip --

Interesting... the (likely unrelated to the original issue)
"xxx.sh[3]: cd: bad directory" only happens if I launch the shell with
$ env - ~/bin/ksh ... # ... does anyone know why ?

----

Bye,
Roland

[Glenn Fowler]

env - ... unsets HOME among others causing cd with no args to fail as it
should

Post by Roland Mainz

On Tue, Dec 3, 2013 at 8:13 PM, Glenn Fowler <glenn.s.fowler at gmail.com>

On Tue, Dec 3, 2013 at 12:02 PM, Simon Toedt <simon.toedt at gmail.com>

On Tue, Dec 3, 2013 at 5:19 PM, Glenn Fowler <glenn.s.fowler at gmail.com

Post by Glenn Fowler
i don't really care for the utility of -p but it seems to be working

as

Post by Glenn Fowler
advertised
try something like: mktemp myprefix "$PWD"

; :'
/tmp/myprejFqre.FAL

Post by Glenn Fowler
or mktemp "" "$PWD"

does not work either

Post by Glenn Fowler
mktemp --?p
-p, --default=directory
Use directory if the TMPDIR environment variable is not
defined. Implies --tmp.
gnu man mktemp
-p DIR use DIR as a prefix; implies -t [deprecated]
-t interpret TEMPLATE as a single file name component, relative
to a directory: $TMPDIR, if set; else the
directory specified via -p; else /tmp [deprecated]

What I wish to archive is to get a temporary file in the O_XATTR dir
so that the temp file disappears when I remove the underlying parent
file.
And I am confused: Why does this not work? I'd expect a temporary file
TMPDIR="$PWD" ; mktemp "" "$PWD" ; :'
+ builtin mktemp
+ touch x1
/tmp/8nR0snQsJI.JID
TMPDIR="$PWD" ; mktemp ; :'
+ builtin mktemp
+ touch x1
+ mktemp
/tmp/tmp5Sy9yoF.syY

what does this output (-u prints the tmp file but does not create)
--
set -x
mktemp --?-version
cd
print $PWD
mktemp -u "" "$PWD"
touch x1
mktemp -u "" "$PWD"
cd -
rm x1

The output of that script looks like this with ast-ksh.2013-10-10 on
-- snip --
$ env - ~/bin/ksh xxx.sh
+ mktemp '--?-version'
version mktemp (AT&T Research) 2012-12-12
+ cd
xxx.sh[3]: cd: bad directory
+ print /home/test001/tmp
/home/test001/tmp
+ mktemp -u '' /home/test001/tmp
/home/test001/tmp/4sfuBB7Hll.llT
+ touch x1
/tmp/hWzxGz8X0v.0vJ
+ cd -
/home/test001/tmp
+ rm x1
-- snip --

Interesting... the (likely unrelated to the original issue)
"xxx.sh[3]: cd: bad directory" only happens if I launch the shell with
$ env - ~/bin/ksh ... # ... does anyone know why ?
----
Bye,
Roland
--
__ . . __
(o.\ \/ /.o) roland.mainz at nrubsig.org
\__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer
/O /==\ O\ TEL [phone]
(;O/ \/ \O;)

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[Roland Mainz]

On Tue, Dec 3, 2013 at 7:02 PM, Roland Mainz <roland.mainz at nrubsig.org>

Post by Roland Mainz

Post by Roland Mainz

On Tue, Dec 3, 2013 at 5:19 PM, Glenn Fowler
<glenn.s.fowler at gmail.com>

Post by Glenn Fowler
i don't really care for the utility of -p but it seems to be working as
advertised
try something like: mktemp myprefix "$PWD"

[snip]

Post by Roland Mainz

Post by Roland Mainz
The output of that script looks like this with ast-ksh.2013-10-10 on
-- snip --
$ env - ~/bin/ksh xxx.sh
+ mktemp '--?-version'
version mktemp (AT&T Research) 2012-12-12
+ cd
xxx.sh[3]: cd: bad directory
+ print /home/test001/tmp
/home/test001/tmp
+ mktemp -u '' /home/test001/tmp
/home/test001/tmp/4sfuBB7Hll.llT
+ touch x1
/tmp/hWzxGz8X0v.0vJ
+ cd -
/home/test001/tmp
+ rm x1
-- snip --

Interesting... the (likely unrelated to the original issue)
"xxx.sh[3]: cd: bad directory" only happens if I launch the shell with
$ env - ~/bin/ksh ... # ... does anyone know why ?

env - ... unsets HOME among others causing cd with no args to fail as it
should

Ok...
$ ~/bin/ksh -c 'rm x1 ; touch x1 ; cd -@ x1 ; ls -l ; true >
/dev/file/xattr@/home/test001/tmp/x1//@//foo ; ls -l ; true'
total 2
-r--r--r-- 1 root root 156 Dec 4 08:03 SUNWattr_ro
-rw-r--r-- 1 root root 472 Dec 4 08:03 SUNWattr_rw
total 3
-rw-r--r-- 1 test001 staff 0 Dec 4 08:03 foo
-r--r--r-- 1 root root 156 Dec 4 08:03 SUNWattr_ro
-rw-r--r-- 1 root root 472 Dec 4 08:03 SUNWattr_rw

----

Bye,
Roland