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fix(install): avoid /dev/stdin file redirect in guided installer (#3514)

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Probe /dev/stdin readability before selecting it, and add /proc/self/fd/0
as a fallback for constrained containers where /dev/stdin is inaccessible.

Closes #3482
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Argenis 2026-03-14 17:52:03 -04:00 committed by Roman Tataurov
parent 9a634e64eb
commit 7eb86be726
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GPG Key ID: 70A51EF3185C334B
1 changed files with 8 additions and 1 deletions
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9
install.sh
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@ -420,11 +420,18 @@ bool_to_word() {
}
guided_input_stream() {
if [[ -t 0 ]]; then
# Some constrained containers report interactive stdin (-t 0) but deny
# opening /dev/stdin directly. Probe readability before selecting it.
if [[ -t 0 ]] && (: </dev/stdin) 2>/dev/null; then
echo "/dev/stdin"
return 0
fi
if [[ -t 0 ]] && (: </proc/self/fd/0) 2>/dev/null; then
echo "/proc/self/fd/0"
return 0
fi
if (: </dev/tty) 2>/dev/null; then
echo "/dev/tty"
return 0