Hi!
----
This seems to be a very old bug (I can trace it to at least
ast-ksh.2011-02-08) ...
... it seems that ksh93 doesn't close file descriptors opened in a
subshell if the fd number is > 10.
Example (in Solaris $ /usr/proc/bin/pfiles <pid> # will print all open
file fds for a given process):
-- snip --
$ ksh -c 'cd /etc/inet ; ( redirect {n}</etc/profile ; true ); pfiles
$$ ; true'
21998: ksh -c cd /etc/inet ; ( redirect {n}</etc/profile ; true ); pfiles $$
Current rlimit: 256 file descriptors
0: S_IFCHR mode:0620 dev:552,0 ino:439399504 uid:1000 gid:7 rdev:6,1
O_RDWR|O_NOCTTY|O_LARGEFILE
/dev/pts/1
offset:17168464
1: S_IFCHR mode:0620 dev:552,0 ino:439399504 uid:1000 gid:7 rdev:6,1
O_RDWR|O_NOCTTY|O_LARGEFILE
/dev/pts/1
offset:17168464
2: S_IFCHR mode:0620 dev:552,0 ino:439399504 uid:1000 gid:7 rdev:6,1
O_RDWR|O_NOCTTY|O_LARGEFILE
/dev/pts/1
offset:17168464
10: S_IFREG mode:0644 dev:90,65538 ino:27285 uid:0 gid:3 size:1570
O_RDONLY|O_LARGEFILE FD_CLOEXEC
/etc/profile
offset:0
-- snip --
This only happens for fd >=10 ...
Testcase is:
-- snip --
# this fails
$ ksh -c 'cd /etc/inet ; ( redirect {n}</etc/profile ; true ); [[ -f
/dev/fd/10 ]] && printf "file is open\n"; true'
file is open
# this prints nothing (as expected):
$ ksh -c 'cd /etc/inet ; ( ulimit -c 0 ; redirect {n}</etc/profile ;
true ); [[ -f /dev/fd/10 ]] && printf "file is open\n"; true'
-- snip --
----
Bye,
Roland
--
__ . . __
(o.\ \/ /.o) [email protected]
\__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer
/O /==\ O\ TEL +49 641 3992797
(;O/ \/ \O;)
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