FDInputStream: guard descriptor close

Cropi · Cropi · commit 91d53d4d5312 · 2025-07-14T14:54:01.000+02:00
diff --git a/src/Common/FDInputStream.hpp b/src/Common/FDInputStream.hpp
@@ -57,7 +57,12 @@ namespace usbguard
   {
   public:
     FDStreamBuf(int fd) : fd_(fd) { }
-    ~FDStreamBuf() override { close(fd_); }
+    ~FDStreamBuf() override {
+        if (fd_ >= 0) {
+            close(fd_);
+            fd_ = -1;
+        }
+    }
 
     std::streamsize xsgetn(char* s, std::streamsize n)
     {

Original file line number	Diff line number	Diff line change
`@@ -57,7 +57,12 @@ namespace usbguard`
`57`	`57`	`{`
`58`	`58`	`public:`
`59`	`59`	`FDStreamBuf(int fd) : fd_(fd) { }`
`60`		`- ~FDStreamBuf() override { close(fd_); }`
	`60`	`+ ~FDStreamBuf() override {`
	`61`	`+ if (fd_ >= 0) {`
	`62`	`+ close(fd_);`
	`63`	`+ fd_ = -1;`
	`64`	`+ }`
	`65`	`+ }`
`61`	`66`
`62`	`67`	`std::streamsize xsgetn(char* s, std::streamsize n)`
`63`	`68`	`{`