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Ampr: fix path case on Linux (#750)

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This commit is contained in:
999sian
2026-08-02 22:36:00 +01:00
committed by GitHub
parent f36ce4084a
commit 8df4039ca4
7 changed files with 144 additions and 33 deletions
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src/SharpEmu.Libs/Kernel/KernelMemoryCompatExports.cs
+11 -16
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@@ -117,17 +117,12 @@ public static partial class KernelMemoryCompatExports
private static readonly Dictionary<string, string> _guestMounts = new(StringComparer.OrdinalIgnoreCase);
private static readonly HashSet<string> _tracedStatResults = new(StringComparer.Ordinal);
// Both caches memoize host filesystem probe outcomes, so their key
// equivalence must match the host filesystem's: Windows resolves names
// case-insensitively, but Linux hosts are case-sensitive, and an
// ignore-case cache there aliases distinct paths — a cached miss for
// "/app0/DATA.BIN" keeps answering NOT_FOUND for "/app0/Data.bin" even
// though that file exists and a fresh probe would find it.
private static readonly StringComparer HostFsPathComparer =
OperatingSystem.IsWindows() ? StringComparer.OrdinalIgnoreCase : StringComparer.Ordinal;
private static readonly StringComparison HostFsPathComparison =
OperatingSystem.IsWindows() ? StringComparison.OrdinalIgnoreCase : StringComparison.Ordinal;
private static readonly HashSet<string> _negativeStatCache = new(HostFsPathComparer);
private static readonly ConcurrentDictionary<string, ulong> _aprFileSizeCache = new(HostFsPathComparer);
// equivalence must match the host filesystem's — see HostFsPath. On a
// case-sensitive host an ignore-case cache aliases distinct paths: a
// cached miss for "/app0/DATA.BIN" keeps answering NOT_FOUND for
// "/app0/Data.bin" even though that file exists.
private static readonly HashSet<string> _negativeStatCache = new(HostFsPath.Comparer);
private static readonly ConcurrentDictionary<string, ulong> _aprFileSizeCache = new(HostFsPath.Comparer);
private static long _nextFileDescriptor = 2;
private static string _applicationTitleId = "UNKNOWN";
@@ -5203,8 +5198,8 @@ public static partial class KernelMemoryCompatExports
// host would let a relative path escape into a sibling directory that
// differs from the mount root only by case (root ".../Save" vs
// sibling ".../save").
if (!string.Equals(candidate, matchedHostRoot, HostFsPathComparison) &&
!candidate.StartsWith(rootWithSeparator, HostFsPathComparison))
if (!string.Equals(candidate, matchedHostRoot, HostFsPath.Comparison) &&
!candidate.StartsWith(rootWithSeparator, HostFsPath.Comparison))
{
return false;
}
@@ -5305,8 +5300,8 @@ public static partial class KernelMemoryCompatExports
var rootWithSeparator =
Path.TrimEndingDirectorySeparator(fullRoot) + Path.DirectorySeparatorChar;
if (!string.Equals(candidate, fullRoot, HostFsPathComparison) &&
!candidate.StartsWith(rootWithSeparator, HostFsPathComparison))
if (!string.Equals(candidate, fullRoot, HostFsPath.Comparison) &&
!candidate.StartsWith(rootWithSeparator, HostFsPath.Comparison))
{
return string.Empty;
}
@@ -5332,7 +5327,7 @@ public static partial class KernelMemoryCompatExports
private static bool EscapesMountViaReparsePoint(string mountRoot, string candidate)
{
var rootTrimmed = Path.TrimEndingDirectorySeparator(mountRoot);
if (string.Equals(candidate, rootTrimmed, HostFsPathComparison))
if (string.Equals(candidate, rootTrimmed, HostFsPath.Comparison))
{
return false;
}