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modified post 81f23 by Anonymous on Fri 1st Sep 2023 11:11
original post 31d07f8 by Anonymous on Fri 1st Sep 2023 04:11
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#!/usr/bin/ksh93

1	1	#!/usr/bin/ksh93
2	2
3	3	#
4	4	# mkfifo - mkfifo emulation hack for Cygwin on NFS filesystems
5	5	#
6	6	# Simple hash full path of FIFO, create FIFO in /tmp
7	7	# and use original pathname for softlink to FIFO in /tmp
8	8	#
9	9	# Script should be chmod +x and then in front of PATH,
10	10	# before /usr/bin:/bin where the normal mkfifo resides
11	11	#
12	12
13	13	#
14	14	# Written by Roland Mainz <roland.mainz@nrubsig.org>
15	15	#
16	16
17	17	function usage
18	18	{
19	19	OPTIND=0
20	20	getopts -a "$0" "${mkfifo_usage}" OPT '-?'
21	21	exit 2
22	22	}
23	23
24	24	typeset -r mkfifo_usage=$'+
25	25	[-?\n@(#)\$Id: mkfifo (Roland Mainz) 2023-09-01 \$\n]
26	26	[-author?Roland Mainz <roland.mainz@nrubsig.org>]
27	27	[+NAME?mkfifo - mkfifo emulation hack for Cygwin nfs]
28	28	[+DESCRIPTION?\bshlint\b is a lint for POSIX shell scripts.]
29	29	[m:mode?set file permissions.]:[number]
30	30
31	31	name
32	32
33	33	[+SEE ALSO?\bshcomp\b(1), \bksh93\b(1)]
34	34	'
35	35
36	36	builtin getconf
37	37
38	38	while getopts -a "${progname}" "${mkfifo_usage}" OPT ; do
39	39	# printmsg "## OPT=\|${OPT}\|, OPTARG=\|${OPTARG}\|"
40	40	case "${OPT}" in
41	41	'm') typeset fifomode="$OPTARG" ;;
42	42	*) usage ;;
43	43	esac
44	44	done
45	45	shift $(( OPTIND-1 ))
46	46
47	47	(( $# > 0 )) \|\| usage
48	48
49	49	# reset PATH to the platform's default
50	50	export PATH="$(getconf PATH)"
51	51
52	52	integer retval=0
53	53	typeset fifoname
54	54	typeset hash
55	55	typeset dummy
56	56
57	57	for fifoname in "$@" ; do
58	58	realpath "$fifoname" \| md5sum \| read hash dummy
59	59	fifopath="/tmp/nfsfifo_${hash}.fifo"
60	60	rm -f "$fifopath"
61	61
62	62	if [[ -v fifomode ]] ; then
63	63	mkfifo -m "$fifomode" "$fifopath"
64	64	(( retval=$? ))
65	65	else
66	66	mkfifo "$fifopath"
67	67	(( retval=$? ))
68	68	fi
69	69	if (( retval == 0 )) ; then
70	70	ln -sf "$fifopath" "$fifoname"
71	71	else
72	72	break
73	73	fi
74	74	done
75	75
76	76	exit $retval
77	77	#EOF.
78	78