51 lines
1.3 KiB
Bash
51 lines
1.3 KiB
Bash
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#!/usr/bin/env bash
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# script for use with xinetd to monitor readonly filesystem
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#
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# xinetd config
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# service fsro
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#{
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# disable = no
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# flags = REUSE
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# socket_type = stream
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# type = UNLISTED
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# port = 3333
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# wait = no
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# user = nobody
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# server = /usr/local/sbin/mount-ro-xinetd.sh
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# log_on_failure += USERID
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# only_from = 127.0.0.0/8
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#}
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#
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function check_ok() {
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MSG="$1 healthy"
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LEN=$((${#MSG} + 2))
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echo -en "HTTP/1.1 200 OK\r\n"
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echo -en "Content-Type: text/plain\r\n"
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echo -en "Connection: close\r\n"
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echo -en "Content-Length: $LEN\r\n"
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echo -en "\r\n"
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echo -en "$MSG\r\n"
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sleep 0.1
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exit 0
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}
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function check_fail() {
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MSG="$1"
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LEN=$((${#MSG} + 2))
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echo -en "HTTP/1.1 503 Service Unavailable\r\n"
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echo -en "Content-Type: text/plain\r\n"
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echo -en "Connection: close\r\n"
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echo -en "Content-Length: $LEN\r\n"
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echo -en "\r\n"
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echo -en "$MSG\r\n"
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sleep 0.1
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exit 1
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}
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CHECK_PATH=/tmp
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grep -q $CHECK_PATH /proc/mounts || check_fail "Mount missing: $CHECK_PATH"
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dd if=/dev/urandom of=$CHECK_PATH/.test01 bs=1M count=10 status=none || check_fail "Write failed: $CHECK_PATH"
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dd if=$CHECK_PATH/.test01 of=/dev/null bs=1M status=none || check_fail "Read failed: $CHECK_PATH"
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check_ok "$CHECK_PATH"
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