3dbdfbc06f
Silently recover if REDO_CHEATFDS file descriptors are closed, because they aren't completely essential and MAKEFLAGS-related warnings already get printed if all file descriptors have been closed. If MAKEFLAGS --jobserver-auth flags are closed, improve the error message so that a) it's a normal error instead of an exception and b) we link to documentation about why it happens. Also write some more detailed documentation about what's going on here.
25 lines
660 B
Text
25 lines
660 B
Text
[ -e rodir ] && chmod u+w rodir
|
|
[ -e rodir/rwdir ] && chmod u+w rodir/rwdir
|
|
rm -rf rodir
|
|
mkdir rodir rodir/rwdir
|
|
|
|
cd rodir
|
|
cat >default.ro1.do <<-EOF
|
|
chmod u+w "\$(dirname "\$1")"
|
|
echo 'redir' >\$3
|
|
EOF
|
|
cat >default.ro2.do <<-EOF
|
|
chmod u+w "\$(dirname "\$1")"
|
|
echo 'stdout'
|
|
EOF
|
|
|
|
# Check that:
|
|
# - redo works when the .do file is in a read-only directory.
|
|
# - redo works when the target is in a read-only directory that becomes
|
|
# writable only *after* launching the .do script. (For example, the .do
|
|
# might mount a new read-write filesystem in an otherwise read-only
|
|
# tree.)
|
|
chmod a-w . rwdir
|
|
redo rwdir/a.ro1
|
|
chmod a-w . rwdir
|
|
redo rwdir/a.ro2
|