fusefs: Fix further intermittency in the BadServer.ShortWrite test case

After being unmounted, the mockfs server would occasionally read from
/dev/fuse again, if the main function didn't exit fast enough, getting
an ENODEV error.  Handle that appropriately.

Reported by:	Siva Mahadevan <me@svmhdvn.name>
Fixes:		d86025c1d4
MFC after:	1 week
Reviewed by:	Siva Mahadevan <me@svmhdvn.name>
Differential Revision: https://reviews.freebsd.org/D54331

This commit is contained in:

Alan Somers

2025-12-21 08:32:31 -07:00

parent 4f35a84b32

commit f51e9d0e09

1 changed files with 5 additions and 1 deletions

									
										tests/sys/fs/fusefs/mockfs.cc
									
		+5
		-1
	
												View File
												
				@@ -980,7 +980,11 @@ void MockFS::read_request(mockfs_buf_in &in, ssize_t &res) {

					}

					res = read(m_fuse_fd, &in, sizeof(in));

					if (res < 0 && errno != EBADF && !m_quit && !m_expect_unmount) {

					if (res < 0 && errno == ENODEV && m_expect_unmount) {

						/* The kernel unmounted us, as expected. */

						m_quit = true;

					}

					if (res < 0 && errno != EBADF && !m_quit) {

						m_quit = true;

						FAIL() << "read: " << strerror(errno);

					}