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-rw-r--r--backends/fs/amigaos4/amigaos4-fs.cpp90
1 files changed, 57 insertions, 33 deletions
diff --git a/backends/fs/amigaos4/amigaos4-fs.cpp b/backends/fs/amigaos4/amigaos4-fs.cpp
index 7657bf20c0..806bd1e956 100644
--- a/backends/fs/amigaos4/amigaos4-fs.cpp
+++ b/backends/fs/amigaos4/amigaos4-fs.cpp
@@ -40,7 +40,7 @@ const char *lastPathComponent(const Common::String &str) {
int offset = str.size();
if (offset <= 0) {
- debug(6, "Bad offset");
+ debug(6, "Bad offset!");
return 0;
}
@@ -71,31 +71,30 @@ AmigaOSFilesystemNode::AmigaOSFilesystemNode(const Common::String &p) {
int offset = p.size();
- //assert(offset > 0);
-
if (offset <= 0) {
- debug(6, "Bad offset");
+ debug(6, "Bad offset!");
return;
}
- // WORKAROUND:
- // This is a bug in AmigaOS4 newlib.library 53.30 and lower.
- // It will be removed once a fixed version is available to public.
- // DESCRIPTION:
- // We need to explicitly open dos.library and its IDOS interface.
- // Otherwise we will hit an IDOS NULL pointer after compiling a
- // shared binary with (shared) plugins.
- // The hit will happen on loading a game from any engine, if more
- // than one engine/(shared) plugin is available.
- DOSBase = IExec->OpenLibrary("dos.library", 0);
- IDOS = (struct DOSIFace *)IExec->GetInterface(DOSBase, "main", 1, NULL);
-
_sPath = p;
_sDisplayName = ::lastPathComponent(_sPath);
_pFileLock = 0;
_bIsDirectory = false;
_bIsValid = false;
+ // WORKAROUND:
+ // This is a workaround for a bug present in AmigaOS4's
+ // newlib.library 53.30 and lower.
+ // It will be removed once a fixed version of said library is
+ // available to the public.
+ // DESCRIPTION:
+ // We need to explicitly open dos.library and it's IDOS interface.
+ // Otherwise it will hit a NULL pointer with a shared binary build.
+ // The hit will happen on loading a game from any engine, if
+ // more than one engine (shared) plugin is available.
+ DOSBase = IExec->OpenLibrary("dos.library", 0);
+ IDOS = (struct DOSIFace *)IExec->GetInterface(DOSBase, "main", 1, NULL);
+
// Check whether the node exists and if it's a directory.
struct ExamineData * pExd = IDOS->ExamineObjectTags(EX_StringNameInput,_sPath.c_str(),TAG_END);
if (pExd) {
@@ -105,7 +104,7 @@ AmigaOSFilesystemNode::AmigaOSFilesystemNode(const Common::String &p) {
_pFileLock = IDOS->Lock((CONST_STRPTR)_sPath.c_str(), SHARED_LOCK);
_bIsValid = (_pFileLock != 0);
- // Add a trailing slash if needed.
+ // Add a trailing slash, if needed.
const char c = _sPath.lastChar();
if (c != '/' && c != ':')
_sPath += '/';
@@ -127,6 +126,7 @@ AmigaOSFilesystemNode::AmigaOSFilesystemNode(const Common::String &p) {
AmigaOSFilesystemNode::AmigaOSFilesystemNode(BPTR pLock, const char *pDisplayName) {
ENTER();
+
int bufSize = MAXPATHLEN;
_pFileLock = 0;
@@ -151,17 +151,20 @@ AmigaOSFilesystemNode::AmigaOSFilesystemNode(BPTR pLock, const char *pDisplayNam
delete[] n;
}
- _bIsValid = false;
_bIsDirectory = false;
+ _bIsValid = false;
+ // Check whether the node exists and if it's a directory.
struct ExamineData * pExd = IDOS->ExamineObjectTags(EX_FileLockInput,pLock,TAG_END);
if (pExd) {
_nProt = pExd->Protection;
if (EXD_IS_DIRECTORY(pExd)) {
_bIsDirectory = true;
+
_pFileLock = IDOS->DupLock(pLock);
_bIsValid = _pFileLock != 0;
+ // Add a trailing slash, if needed.
const char c = _sPath.lastChar();
if (c != '/' && c != ':')
_sPath += '/';
@@ -172,7 +175,7 @@ AmigaOSFilesystemNode::AmigaOSFilesystemNode(BPTR pLock, const char *pDisplayNam
IDOS->FreeDosObject(DOS_EXAMINEDATA, pExd);
} else {
- debug(6, "ExamineObject() returned NULL");
+ debug(6, "ExamineObject() returned NULL!");
}
LEAVE();
@@ -222,12 +225,31 @@ bool AmigaOSFilesystemNode::exists() const {
// IDOS->FreeDosObject(DOS_FIB, fib);
//
// ============================= New code
+
+ // WORKAROUND:
+ // This is a workaround for a bug present in AmigaOS4's
+ // newlib.library 53.30 and lower.
+ // It will be removed once a fixed version of said library is
+ // available to the public.
+ // DESCRIPTION:
+ // We need to explicitly open dos.library and it's IDOS interface.
+ // Otherwise it will hit a NULL pointer with a shared binary build.
+ // The hit will happen on loading a game from any engine, if
+ // more than one engine (shared) plugin is available.
+ DOSBase = IExec->OpenLibrary("dos.library", 0);
+ IDOS = (struct DOSIFace *)IExec->GetInterface(DOSBase, "main", 1, NULL);
+
BPTR pLock = IDOS->Lock(_sPath.c_str(), SHARED_LOCK);
if (pLock) {
nodeExists = true;
IDOS->UnLock(pLock);
}
+ // WORKAROUND 2:
+ // Close dos.library and its IDOS interface again.
+ IExec->DropInterface((struct Interface *)IDOS);
+ IExec->CloseLibrary(DOSBase);
+
LEAVE();
return nodeExists;
}
@@ -235,7 +257,7 @@ bool AmigaOSFilesystemNode::exists() const {
AbstractFSNode *AmigaOSFilesystemNode::getChild(const Common::String &n) const {
ENTER();
if (!_bIsDirectory) {
- debug(6, "Not a directory");
+ debug(6, "Not a directory!");
return 0;
}
@@ -255,30 +277,31 @@ bool AmigaOSFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, b
bool ret = false;
if (!_bIsValid) {
- debug(6, "Invalid node");
+ debug(6, "Invalid node!");
LEAVE();
return false; // Empty list
}
if (!_bIsDirectory) {
- debug(6, "Not a directory");
+ debug(6, "Not a directory!");
LEAVE();
return false; // Empty list
}
if (isRootNode()) {
- debug(6, "Root node");
+ debug(6, "Root node!");
LEAVE();
myList = listVolumes();
return true;
}
APTR context = IDOS->ObtainDirContextTags( EX_FileLockInput, _pFileLock,
- EX_DoCurrentDir, TRUE, /* for softlinks */
- EX_DataFields, (EXF_NAME|EXF_LINK|EXF_TYPE),
- TAG_END);
+ EX_DoCurrentDir, TRUE, /* for softlinks */
+ EX_DataFields, (EXF_NAME|EXF_LINK|EXF_TYPE),
+ TAG_END);
if (context) {
- struct ExamineData * pExd = NULL; // NB: No need to free the value after usage, everything will be dealt with by the DirContext release
+ struct ExamineData * pExd = NULL; // No need to free the value after usage, everything
+ // will be dealt with by the DirContext release.
AmigaOSFilesystemNode *entry;
while ( (pExd = IDOS->ExamineDir(context)) ) {
@@ -300,7 +323,7 @@ bool AmigaOSFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, b
}
if (ERROR_NO_MORE_ENTRIES != IDOS->IoErr() ) {
- debug(6, "An error occurred during ExamineDir");
+ debug(6, "IoErr() - ExamineDir (NO_MORE_ENTRIES)!");
ret = false;
} else {
ret = true;
@@ -309,7 +332,7 @@ bool AmigaOSFilesystemNode::getChildren(AbstractFSList &myList, ListMode mode, b
IDOS->ReleaseDirContext(context);
} else {
- debug(6, "Unable to ObtainDirContext");
+ debug(6, "Unable to ObtainDirContext!");
ret = false;
}
@@ -322,7 +345,7 @@ AbstractFSNode *AmigaOSFilesystemNode::getParent() const {
ENTER();
if (isRootNode()) {
- debug(6, "Root node");
+ debug(6, "Root node!");
LEAVE();
return new AmigaOSFilesystemNode(*this);
}
@@ -388,7 +411,7 @@ AbstractFSList AmigaOSFilesystemNode::listVolumes() const {
struct DosList *dosList = IDOS->LockDosList(kLockFlags);
if (!dosList) {
- debug(6, "Cannot lock the DOS list");
+ debug(6, "Cannot lock DOS list!");
LEAVE();
return myList;
}
@@ -408,7 +431,7 @@ AbstractFSList AmigaOSFilesystemNode::listVolumes() const {
// which errored using SDK 53.24 with a
// 'struct dosList' has no member called 'dol_Task'
// The reason for that was, that
- // 1) dol_Task wasn't a task pointer, it is a message port instead.
+ // 1) dol_Task wasn't a task pointer, it was a message port instead.
// 2) it was redefined to be dol_Port in dos/obsolete.h in aforementioned SDK.
// Copy name to buffer.
@@ -429,7 +452,7 @@ AbstractFSList AmigaOSFilesystemNode::listVolumes() const {
// Find device name.
IDOS->DevNameFromLock(volumeLock, devName, MAXPATHLEN, DN_DEVICEONLY);
- sprintf(buffer, "%s (%s)", volName, devName);
+ snprintf(buffer, MAXPATHLEN, "%s (%s)", volName, devName);
delete[] devName;
@@ -467,3 +490,4 @@ bool AmigaOSFilesystemNode::createDirectory() {
}
#endif //defined(__amigaos4__)
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 11:41:25 +0000