all: initial support for freebsd

- Use `copy_file_range(2)` over `sendfile(2)` which has wider
compatibility.
- Special case pam on freebsd and document `configDirectory`
incompatibility.
- Disable jemalloc for FreeBSD by default as it is the system allocator.
- Disable breakpad by default on FreeBSD as breakpad is not supported.

src/core/logging.cpp

@@ -27,7 +27,7 @@
 #include <qtmetamacros.h>
 #include <qtypes.h>
 #include <sys/mman.h>
-#include <sys/sendfile.h>
+#include <unistd.h>
 
 #include "instanceinfo.hpp"
 #include "logcat.hpp"
@@ -392,7 +392,7 @@ void ThreadLogging::initFs() {
 		delete detailedFile;
 		detailedFile = nullptr;
 	} else {
-		auto lock = flock {
+		struct flock lock = {
 		    .l_type = F_WRLCK,
 		    .l_whence = SEEK_SET,
 		    .l_start = 0,
@@ -414,7 +414,7 @@ void ThreadLogging::initFs() {
 		auto* oldFile = this->file;
 		if (oldFile) {
 			oldFile->seek(0);
-			sendfile(file->handle(), oldFile->handle(), nullptr, oldFile->size());
+			copy_file_range(oldFile->handle(), nullptr, file->handle(), nullptr, oldFile->size(), 0);
 		}
 
 		this->file = file;
@@ -426,7 +426,14 @@ void ThreadLogging::initFs() {
 		auto* oldFile = this->detailedFile;
 		if (oldFile) {
 			oldFile->seek(0);
-			sendfile(detailedFile->handle(), oldFile->handle(), nullptr, oldFile->size());
+			copy_file_range(
+			    oldFile->handle(),
+			    nullptr,
+			    detailedFile->handle(),
+			    nullptr,
+			    oldFile->size(),
+			    0
+			);
 		}
 
 		crash::CrashInfo::INSTANCE.logFd = detailedFile->handle();
@@ -889,7 +896,7 @@ bool LogReader::continueReading() {
 }
 
 void LogFollower::FcntlWaitThread::run() {
-	auto lock = flock {
+	struct flock lock = {
 	    .l_type = F_RDLCK, // won't block other read locks when we take it
 	    .l_whence = SEEK_SET,
 	    .l_start = 0,

src/core/paths.cpp

@@ -361,7 +361,7 @@ void QsPaths::createLock() {
 			return;
 		}
 
-		auto lock = flock {
+		struct flock lock = {
 		    .l_type = F_WRLCK,
 		    .l_whence = SEEK_SET,
 		    .l_start = 0,
@@ -389,7 +389,7 @@ bool QsPaths::checkLock(const QString& path, InstanceLockInfo* info, bool allowD
 	auto file = QFile(QDir(path).filePath("instance.lock"));
 	if (!file.open(QFile::ReadOnly)) return false;
 
-	auto lock = flock {
+	struct flock lock = {
 	    .l_type = F_WRLCK,
 	    .l_whence = SEEK_SET,
 	    .l_start = 0,

src/core/toolsupport.cpp

@@ -54,7 +54,7 @@ bool QmlToolingSupport::lockTooling() {
 		return false;
 	}
 
-	auto lock = flock {
+	struct flock lock = {
 	    .l_type = F_WRLCK,
 	    .l_whence = SEEK_SET, // NOLINT (fcntl.h??)
 	    .l_start = 0,