New: Health Check warning if series folder is mounted with 'ro' option on linux

Closes #1867

src/NzbDrone.Common/Disk/DriveInfoMount.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System.Collections.Generic;
+using System.IO;
 using NzbDrone.Common.Extensions;
 
 namespace NzbDrone.Common.Disk
@@ -8,10 +9,11 @@ public class DriveInfoMount : IMount
         private readonly DriveInfo _driveInfo;
         private readonly DriveType _driveType;
 
-        public DriveInfoMount(DriveInfo driveInfo, DriveType driveType = DriveType.Unknown)
+        public DriveInfoMount(DriveInfo driveInfo, DriveType driveType = DriveType.Unknown, MountOptions mountOptions = null)
         {
             _driveInfo = driveInfo;
             _driveType = driveType;
+            MountOptions = mountOptions;
         }
 
         public long AvailableFreeSpace => _driveInfo.AvailableFreeSpace;
@@ -33,6 +35,8 @@ public DriveType DriveType
 
         public bool IsReady => _driveInfo.IsReady;
 
+        public MountOptions MountOptions { get; private set; }
+
         public string Name => _driveInfo.Name;
 
         public string RootDirectory => _driveInfo.RootDirectory.FullName;

src/NzbDrone.Common/Disk/IMount.cs

@@ -1,3 +1,4 @@
+using System.Collections.Generic;
 using System.IO;
 
 namespace NzbDrone.Common.Disk
@@ -8,6 +9,7 @@ public interface IMount
         string DriveFormat { get; }
         DriveType DriveType { get; }
         bool IsReady { get; }
+        MountOptions MountOptions { get; }
         string Name { get; }
         string RootDirectory { get; }
         long TotalFreeSpace { get; }

src/NzbDrone.Common/Disk/MountOptions.cs

@@ -0,0 +1,16 @@
+using System.Collections.Generic;
+
+namespace NzbDrone.Common.Disk
+{
+    public class MountOptions
+    {
+        private readonly Dictionary<string, string> _options;
+
+        public MountOptions(Dictionary<string, string> options)
+        {
+            _options = options;
+        }
+
+        public bool IsReadOnly => _options.ContainsKey("ro");
+    }
+}

src/NzbDrone.Common/NzbDrone.Common.csproj

@@ -85,6 +85,7 @@
     <Compile Include="Disk\FileSystemLookupService.cs" />
     <Compile Include="Disk\DriveInfoMount.cs" />
     <Compile Include="Disk\IMount.cs" />
+    <Compile Include="Disk\MountOptions.cs" />
     <Compile Include="Disk\RelativeFileSystemModel.cs" />
     <Compile Include="Disk\FileSystemModel.cs" />
     <Compile Include="Disk\FileSystemResult.cs" />

src/NzbDrone.Core/HealthCheck/Checks/MountCheck.cs

@@ -0,0 +1,36 @@
+using System.Linq;
+using NzbDrone.Common.Disk;
+using NzbDrone.Common.Extensions;
+using NzbDrone.Core.Tv;
+
+namespace NzbDrone.Core.HealthCheck.Checks
+{
+    public class MountCheck : HealthCheckBase
+    {
+        private readonly IDiskProvider _diskProvider;
+        private readonly ISeriesService _seriesService;
+
+        public MountCheck(IDiskProvider diskProvider, ISeriesService seriesService)
+        {
+            _diskProvider = diskProvider;
+            _seriesService = seriesService;
+        }
+
+        public override HealthCheck Check()
+        {
+            // Not best for optimization but due to possible symlinks and junctions, we get mounts based on series path so internals can handle mount resolution.
+            var mounts = _seriesService.GetAllSeries()
+                                       .Select(series => _diskProvider.GetMount(series.Path))
+                                       .DistinctBy(m => m.RootDirectory)
+                                       .Where(m => m.MountOptions != null && m.MountOptions.IsReadOnly)
+                                       .ToList();
+
+            if (mounts.Any())
+            {
+                return new HealthCheck(GetType(), HealthCheckResult.Error, "Mount containing a series path is mounted read-only: " + string.Join(",", mounts.Select(m => m.Name)), "#series-mount-ro");
+            }
+
+            return new HealthCheck(GetType());
+        }
+    }
+}

src/NzbDrone.Core/NzbDrone.Core.csproj

@@ -557,6 +557,7 @@
     <Compile Include="HealthCheck\CheckHealthCommand.cs" />
     <Compile Include="HealthCheck\Checks\AppDataLocationCheck.cs" />
     <Compile Include="HealthCheck\Checks\DownloadClientCheck.cs" />
+    <Compile Include="HealthCheck\Checks\MountCheck.cs" />
     <Compile Include="HealthCheck\Checks\DroneFactoryCheck.cs" />
     <Compile Include="HealthCheck\Checks\ImportMechanismCheck.cs" />
     <Compile Include="HealthCheck\Checks\IndexerRssCheck.cs" />

src/NzbDrone.Mono/Disk/DiskProvider.cs

@@ -86,11 +86,14 @@ public override void SetPermissions(string path, string mask, string user, strin
 
         public override List<IMount> GetMounts()
         {
-            return GetDriveInfoMounts().Select(d => new DriveInfoMount(d, FindDriveType.Find(d.DriveFormat)))
-                                       .Where(d => d.DriveType == DriveType.Fixed || d.DriveType == DriveType.Network || d.DriveType == DriveType.Removable)
-                                       .Concat(_procMountProvider.GetMounts())
-                                       .DistinctBy(v => v.RootDirectory)
-                                       .ToList();
+            return _procMountProvider.GetMounts()
+                                     .Concat(GetDriveInfoMounts()
+                                                 .Select(d => new DriveInfoMount(d, FindDriveType.Find(d.DriveFormat)))
+                                                 .Where(d => d.DriveType == DriveType.Fixed ||
+                                                             d.DriveType == DriveType.Network || d.DriveType ==
+                                                             DriveType.Removable))
+                                     .DistinctBy(v => v.RootDirectory)
+                                     .ToList();
         }
 
         public override long? GetTotalSize(string path)

src/NzbDrone.Mono/Disk/ProcMount.cs

@@ -1,4 +1,4 @@
-using System.Collections.Generic;
+using System.Collections.Generic;
 using System.IO;
 using Mono.Unix;
 using NzbDrone.Common.Disk;
@@ -10,12 +10,13 @@ public class ProcMount : IMount
     {
         private readonly UnixDriveInfo _unixDriveInfo;
 
-        public ProcMount(DriveType driveType, string name, string mount, string type, Dictionary<string, string> options)
+        public ProcMount(DriveType driveType, string name, string mount, string type, MountOptions mountOptions)
         {
             DriveType = driveType;
             Name = name;
             RootDirectory = mount;
             DriveFormat = type;
+            MountOptions = mountOptions;
 
             _unixDriveInfo = new UnixDriveInfo(mount);
         }
@@ -28,6 +29,8 @@ public ProcMount(DriveType driveType, string name, string mount, string type, Di
 
         public bool IsReady => _unixDriveInfo.IsReady;
 
+        public MountOptions MountOptions { get; private set; }
+
         public string Name { get; private set; }
 
         public string RootDirectory { get; private set; }

src/NzbDrone.Mono/Disk/ProcMountProvider.cs

@@ -130,7 +130,7 @@ private IMount ParseLine(string line)
                 driveType = DriveType.Network;
             }
 
-            return new ProcMount(driveType, name, mount, type, options);
+            return new ProcMount(driveType, name, mount, type, new MountOptions(options));
         }
 
         private Dictionary<string, string> ParseOptions(string options)