Merge pull request #3081 from Sonicadvance1/fix_waitpid

Tools: Fixes usage of waitpid in the face of EINTR

Source/Tools/FEXRootFSFetcher/Main.cpp

@@ -149,7 +149,7 @@ namespace Exec {
     }
     else {
       int32_t Status{};
-      waitpid(pid, &Status, 0);
+      while (waitpid(pid, &Status, 0) == -1 && errno == EINTR);
       if (WIFEXITED(Status)) {
         return (int8_t)WEXITSTATUS(Status);
       }
@@ -192,7 +192,7 @@ namespace Exec {
       }
 
       int32_t Status{};
-      waitpid(pid, &Status, 0);
+      while (waitpid(pid, &Status, 0) == -1 && errno == EINTR);
       if (WIFEXITED(Status)) {
         // Return what we've read
         close(fd[0]);

Source/Tools/FEXServer/SquashFS.cpp

@@ -157,7 +157,7 @@ namespace SquashFS {
       // Parent
       // Wait for the child to exit
       // This will happen with execvpe of squashmount or exit on failure
-      waitpid(pid, nullptr, 0);
+      while (waitpid(pid, nullptr, 0) == -1 && errno == EINTR);
 
       // Check the child pipe for messages
       pollfd PollFD;
@@ -217,7 +217,7 @@ namespace SquashFS {
     }
     else {
       // Wait for fusermount to leave
-      waitpid(pid, nullptr, 0);
+      while (waitpid(pid, nullptr, 0) == -1 && errno == EINTR);
 
       // Remove the mount path
       rmdir(MountFolder.c_str());