Merge pull request 'update_0.2' (#2) from update_0.2 into main

Reviewed-on: https://gitea.oyacoi.ru/pyrschtjag/backup-manager/pulls/2

backup-manager.sh

@@ -21,6 +21,43 @@ DIR="/opt/backup-manager"
 SCR_BACKUP="$DIR/backup-configs.sh"
 SCR_OPKG="$DIR/backup-opkg.sh"
 
+check_dependencies() {
+    echo "--- Checking NFS dependencies ---"
+    local missing=""
+    local pkgs="kmod-fs-nfs kmod-fs-nfs-v3 kmod-fs-nfs-v4 nfs-utils"
+    
+    for pkg in $pkgs; do
+        if ! opkg list-installed | grep -q "^$pkg "; then
+            missing="$missing $pkg"
+        fi
+    done
+
+    if [ -n "$missing" ]; then
+        echo " [!] Missing packages:$missing"
+        printf "Would you like to install them now? (y/n): "
+        read ans
+        if [ "$ans" = "y" ] || [ "$ans" = "Y" ]; then
+            echo "Updating package lists..."
+            opkg update >/dev/null 2>&1
+            for m in $missing; do
+                printf " [+] Installing $m... "
+                if opkg install "$m" >/dev/null 2>&1; then
+                    echo "OK"
+                else
+                    echo "FAILED"
+                    return 1
+                fi
+            done
+            /sbin/depmod >/dev/null 2>&1
+        else
+            echo "Error: Cannot proceed without NFS dependencies."
+            return 1
+        fi
+    fi
+    echo " [+] All dependencies are satisfied."
+    return 0
+}
+
 mount_share() {
     mkdir -p "$S_MOUNT"
     mount -t nfs "$S_ADDR" "$S_MOUNT" -o nolock,tcp >/dev/null 2>&1
@@ -31,6 +68,31 @@ mount_share() {
     return 0
 }
 
+check_nfs_write() {
+    echo "--- Testing NFS Write/Read access ---"
+    mount_share || return 1
+    
+    local test_file="$S_MOUNT/.nfs_test_$(date +%s)"
+    
+    if ! touch "$test_file" >/dev/null 2>&1; then
+        echo " Error: Cannot write to NFS share (Read-only?)"
+        umount "$S_MOUNT"
+        return 1
+    fi
+    
+    if ! cat "$test_file" >/dev/null 2>&1; then
+        echo " Error: Cannot read from NFS share"
+        rm -f "$test_file"
+        umount "$S_MOUNT"
+        return 1
+    fi
+    
+    rm -f "$test_file"
+    echo " [+] NFS Write/Read test passed."
+    umount "$S_MOUNT"
+    return 0
+}
+
 clean_old_backups() {
     mount_share || return 1
     echo "--- Cleaning up backups older than 30 days ---"
@@ -43,6 +105,9 @@ clean_old_backups() {
 
 select_remote_file() {
     local ext="$1"
+
+    check_dependencies || exit 1
+    check_nfs_write || exit 1
     mount_share || return 1
 
     echo "--- Select $ext file from NFS ---" >&2
@@ -82,6 +147,9 @@ select_remote_file() {
 case "$1" in
     backup)
         echo "--- Remote Backup Starting ---"
+
+        check_dependencies || exit 1
+        check_nfs_write || exit 1
         mount_share || exit 1
         
         REMOTE_BACKUP="$S_MOUNT/backup_${HNAME}_${DATE}.tar.gz"