From 36a1d9a55459f65740f7f39582b753339efc17dc Mon Sep 17 00:00:00 2001
From: clifforama <clifforama@users.noreply.github.com>
Date: Wed, 3 Nov 2021 16:26:40 -0400
Subject: Initial commit

---
 mount-from-config.sh | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 mount-from-config.sh

(limited to 'mount-from-config.sh')

diff --git a/mount-from-config.sh b/mount-from-config.sh
new file mode 100644
index 0000000..fc9a2c4
--- /dev/null
+++ b/mount-from-config.sh
@@ -0,0 +1,38 @@
+#!/system/bin/sh
+CONFIG_FILE="$1"
+CONFIG_PARAMS="mount_options mount_source mount_target mount_max_retries mount_retry_interval"
+
+# source user-specified config file
+if [ -r "${CONFIG_FILE}" ]; then
+    . "${CONFIG_FILE}" >> "${LOG_FILE}" 2>&1
+    missing_count=0
+    for p in ${CONFIG_PARAMS}; do
+        if [[ -z $(eval "echo \"\$${p}\"") ]]; then
+            echo "Config file \"${CONFIG_FILE}\" is missing param \"${p}\"." >> "${LOG_FILE}" 2>&1
+            missing_count=$((missing_count+1))
+        fi
+    done
+    if [ ${missing_count} -gt 0 ]; then
+        exit
+    fi
+else
+    echo "Unable to read config file \"${CONFIG_FILE}\"." >> "${LOG_FILE}" 2>&1
+    exit
+fi
+
+# attempt to mount
+mkdir -p "${mount_target}" >> "${LOG_FILE}" 2>&1
+retries=0
+while : ; do
+    su -c "mount ${mount_options} \"${mount_source}\" \"${mount_target}\"" >> "${LOG_FILE}" 2>&1
+    if grep -q "${mount_target}" /proc/mounts; then
+        echo "Successfully mounted source \"${mount_source}\" at \"${mount_target}\"." >> "${LOG_FILE}" 2>&1
+        break
+    elif [ ${retries} -lt "${mount_max_retries}" ]; then
+        sleep "${mount_retry_interval}"
+        retries=$((retries+1))
+    else
+        echo "Failed to mount source \"${mount_source}\" at \"${mount_target}\" after $((retries+1)) attempts (${retries} retries)." >> "${LOG_FILE}" 2>&1
+        exit
+    fi
+done
-- 
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