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Report 1364 Actions Problem Report Number 1364 Submitter's Classification Test Suite problem State Resolved Resolution Test Suite Deficiency (TSD) Problem Resolution ID TSD.X.0646 Raised 1970-01-01 08:00 Updated 2003-03-13 08:00 Published 1996-12-11 08:00 Product Standard Internationalised System Calls and Libraries Extended (UNIX 95) Certification Program The Open Brand certification program Test Suite VSU version 4.1.1 Test Identification Sockets/accept 13 Problem Summary TSD4U.00171 This test may fail due to a race condition. Problem Text race condition in test purpose 13 of sockets/accept (see report output). The test server tries to force an EMFILE error on a call to accept() by consuming all available file descriptors before. This test succeeds: after consuming all available file descriptors accept() returns -1 with errno equal to EMFILE. Meanwhile the client's connect() call fails with ECONNREFUSED, because the server closed the connection and is waiting for the client to exit. This results in a test failure. [if the client gets scheduled before the server closes the socket the test succeeds.] PARENT CHILD ----------------------------------------------------------- fork WAIT_EVENT(PARENT_READY) s = socket() bind listen POST_EVENT(PARENT_READY) ---------------------------------- consume fds error = inet_client accept socket release fds connect if(error == -1) return(-1); WAIT_EVENT(CHILD_CONTINUE) POST_EVENT(CHILD_CONTINUE) -------------------------------- close(s) WAIT_FOR_PID() -------------------------------------------- Test Output TEST PURPOSE #13 If the implementation supports a communications domain and a connection-oriented socket type: EMFILE in errno and return -1 on a call to int accept(int socket, struct sockaddr *address, size_t *address_len) when OPEN_MAX file descriptors are currently open in the calling process. PREP: Determine OPEN_MAX TEST: AF_INET SOCK_STREAM PREP: Create test sockaddr_in: address = 139.22.228.9, port = 3125 PREP: Child: wait for parent PREP: Create a socket PREP: Connect socket to address 139.22.228.9, port 3125 ERROR: inet_client: connect failed, errno = 146(ECONNREFUSED - Connection refu sed) PREP: Create socket PREP: Bind to socket PREP: Call listen for socket PREP: Signal child parent is ready PREP: Consume all available file descriptors TEST: Call accept TEST: Return value TEST: errno value CLEANUP: Close sockets, kill child TEST: AF_UNIX SOCK_STREAM PREP: Create test sockaddr_un: path = ../tmp/unix.a004Yq PREP: Child: wait for parent PREP: Create socket PREP: Set O_NONBLOCK for socket PREP: Connect to address ../tmp/unix.a004Yq PREP: Child: wait for parent to complete CLEANUP: Child: close socket PREP: Create socket PREP: Bind to socket PREP: Call listen for socket PREP: Signal child parent is ready PREP: Consume all available file descriptors TEST: Call accept TEST: Return value TEST: errno value CLEANUP: Close sockets, kill child 13 UNRESOLVED Review Information Review Type TSMA Review Start Date null Completed null Status Complete Review Recommendation No Resolution Given Review Response We agree this is a test suite deficiency in the test suite version(s) listed. Review Type SA Review Start Date null Completed null Status Complete Review Resolution Test Suite Deficiency (TSD) Review Conclusion This is an agreed Test Suite Deficiency. Problem Reporting System Options: View Report 1364 List All PRs Search Reports Email the System Administrator View the The Open Brand Interpretations Database User Manual
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