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authorLuke Shumaker <lukeshu@parabola.nu>2017-02-06 02:55:30 -0500
committerLuke Shumaker <lukeshu@lukeshu.com>2017-03-25 12:09:33 -0400
commitd149cc9baf581e234cdf357ce37a604bf73115ea (patch)
treece42333902e990055f4bde7750d32dc10f7b7a8f /lib
parentf73c1f172f93b734ec46e861ed1ba8fbb05e65cf (diff)
lib/common.sh: add 'lock_close'; use it as appropriate.
`lock_close FD` is easier to remember than 'exec FD>&-`; and is especially easier if FD is a variable (though that isn't actually taken advantage of here). This uses Bash 4.1+ `exec {var}>&-`, rather than the clunkier `eval exec "$var>&-"` that was necessary in older versions of Bash. Thanks to Dave Reisner for pointing this new bit of syntax out to me the last time I submitted this (back in 2014, 4.1 had just come out).
Diffstat (limited to 'lib')
-rw-r--r--lib/common.sh8
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/common.sh b/lib/common.sh
index 599be54..689772f 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -159,6 +159,14 @@ slock() {
}
##
+# usage : lock_close( $fd )
+##
+lock_close() {
+ local fd=$1
+ exec {fd}>&-
+}
+
+##
# usage: pkgver_equal( $pkgver1, $pkgver2 )
##
pkgver_equal() {