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2017-06-02resolv: Tests for various versions of res_initFlorian Weimer
2017-06-02Add internal facility for dynamic array handlingFlorian Weimer
This is intended as a type-safe alternative to obstacks and hand-written realloc constructs. The implementation avoids writing function pointers to the heap.
2017-05-11support_format_addrinfo: Fix flags and canonname formattingFlorian Weimer
The address family splitting via format_ai_family made unpredictable the place where the canonname field was printed. This commit adjusts the implementation so that the ai_flags is checked for consistency across the list, and ai_canonname must only be present on the first list element. Tests for AI_CANONNAME are added to resolv/tst-resolv-basic.
2017-05-08support: Prevent multiple deletion of temporary filesFlorian Weimer
Otherwise, another user might recreate these files after the first deletion. Particularly with temporary directories, this could result in the removal of unintended files through symbol link attacks.
2017-05-08support: Delete temporary files in LIFO orderFlorian Weimer
This is required to remove temporary directories which contain temporary files. Previously, FIFO order meant that directory removal was attempted when the directory still contained files, which meant that temporary directory cleanup was essentially unsupported.
2017-04-25Fix sys/socket.h namespace issues from sys/uio.h inclusion (bug 21426).Joseph Myers
sys/socket.h includes sys/uio.h to get the definition of the iovec structure. POSIX allows sys/socket.h to make all sys/uio.h symbols visible. However, all of sys/uio.h is XSI-shaded, so for non-XSI POSIX this results in conformtest failures (for sys/socket.h and other headers that include it): Namespace violation: "UIO_MAXIOV" Namespace violation: "readv" Namespace violation: "writev" Now, there is some ambiguity in POSIX about what namespace reservations apply in this case - see http://austingroupbugs.net/view.php?id=1127 - but glibc convention would still avoid declaring readv and writev, for example, for feature test macros that don't include them (if only headers from the relevant standard are included), even if such declarations are permitted, so there is a bug here according to glibc conventions. This patch moves the struct iovec definition to a new bits/types/struct_iovec.h header and includes that from sys/socket.h instead of including the whole of sys/uio.h. This fixes the namespace issue; however, three files in glibc that were relying on the implicit inclusion needed to be updated to include sys/uio.h explicitly. So there is a question of whether sys/socket.h should continue to include sys/uio.h under some conditions, such as __USE_XOPEN or __USE_MISC or __USE_XOPEN || __USE_MISC, for greater compatibility with code that (wrongly) expects this optional inclusion to be present there. (I think the three affected files in glibc should still have explicit sys/uio.h inclusions added in any case, however.) Tested for x86_64. [BZ #21426] * misc/bits/types/struct_iovec.h: New file. * misc/Makefile (headers): Add bits/types/struct_iovec.h. * include/bits/types/struct_iovec.h: New file. * bits/uio.h (struct iovec): Replace by inclusion of <bits/types/struct_iovec.h>. * sysdeps/unix/sysv/linux/bits/uio.h (struct iovec): Likewise. * socket/sys/socket.h: Include <bits/types/struct_iovec.h> instead of <sys/uio.h>. * nptl/tst-cancel4.c: Include <sys/uio.h> * posix/test-errno.c: Likewise. * support/resolv_test.c: Likewise. * conform/Makefile (test-xfail-POSIX2008/arpa/inet.h/conform): Remove. (test-xfail-POSIX2008/netdb.h/conform): Likewise. (test-xfail-POSIX2008/netinet/in.h/conform): Likewise. (test-xfail-POSIX2008/sys/socket.h/conform): Likewise.
2017-04-19Assume that accept4 is always available and worksFlorian Weimer
Simplify the Linux accept4 implementation based on the assumption that it is available in some way. __ASSUME_ACCEPT4_SOCKETCALL was previously unused, so remove it. For ia64, the accept4 system call (and socket call) were backported in kernel version 3.2.18. Reflect this in the installation instructions.
2017-04-13resolv: Reduce EDNS payload size to 1200 bytes [BZ #21361]Florian Weimer
This hardens the stub resolver against fragmentation-based attacks.
2017-03-22Another round of inclusion fixes for _ISOMAC testsuite.Zack Weinberg
* stdio-common/bug25.c: Include stdlib.h. * support/tst-support_format_dns_packet.c: Include stdio.h, stdlib.h, and string.h. * support/tst-support_record_failure.c: Include string.h. * support/tst-support_record_failure-2.sh: Adjust line number expectations and correct a typo in an error message.
2017-03-15support: Explain ignored failures of temporary file removal [BZ #21243]Florian Weimer
2017-03-15support: Add error checking to close system calls [BZ #21244]Florian Weimer
2017-03-15support_format_dns_packet: Fix CNAME and multiple RR handlingFlorian Weimer
Before this change, the loop iterating over RRs in the answer section stopped at the first CNAME record, never printing them. The CNAME and PTR record contents was extracted from the wrong buffer (whole packet instead RDATA). This desynced the parsing after the first CNAME or PTR record. Also fix the AAAA record parsing by checking their sizes.
2017-01-28Bug 20116: Fix use after free in pthread_create()Carlos O'Donell
The commit documents the ownership rules around 'struct pthread' and when a thread can read or write to the descriptor. With those ownership rules in place it becomes obvious that pd->stopped_start should not be touched in several of the paths during thread startup, particularly so for detached threads. In the case of detached threads, between the time the thread is created by the OS kernel and the creating thread checks pd->stopped_start, the detached thread might have already exited and the memory for pd unmapped. As a regression test we add a simple test which exercises this exact case by quickly creating detached threads with large enough stacks to ensure the thread stack cache is bypassed and the stacks are unmapped. Before the fix the testcase segfaults, after the fix it works correctly and completes without issue. For a detailed discussion see: https://www.sourceware.org/ml/libc-alpha/2017-01/msg00505.html
2017-01-27nptl: Add tst-robust-forkFlorian Weimer
2017-01-01support: struct netent portability fix for support_format_netentFlorian Weimer
2017-01-01support: Use %td for pointer difference in xwriteFlorian Weimer
2017-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
2016-12-31resolv: Add beginnings of a libresolv test suiteFlorian Weimer
2016-12-31support: Implement --verbose option for test programsFlorian Weimer
Some tests can produce rather verbose tracing information, and the --verbose option provides a standardized way to enable such logging output.
2016-12-31support: Use support_record_failure consistentlyFlorian Weimer
This causes more test programs to link in the support_record_failure function, which triggers an early call to mmap from an ELF constructor, but this should not have side effects intefering with the functionality actually under test (unlike, say, a call to malloc).
2016-12-31support: Helper functions for entering namespacesFlorian Weimer
2016-12-30Fix tst-support_record_failure-2 for run-built-tests = no.Joseph Myers
The support/tst-support_record_failure-2.out test attempts to run built code even if run-built-tests = no, so failing with build-many-glibcs.py for all architectures whose code cannot be run on the system running the script. This patch disables the test in that case. Tested for x86_64 (native), and for aarch64 with build-many-glibcs.py. * support/Makefile (tests-special): Make definition conditional on [$(run-built-tests) = yes]. ($(objpfx)tst-support_record_failure-2.out): Make rule conditional on [$(run-built-tests) = yes].
2016-12-28Add SYSV message queue testAdhemerval Zanella
This patch adds a simple SYSV message queue test to check for correct argument passing on kernel. The idea is neither to be an extensive testing nor to check for any specific Linux test. * sysvipc/Makefile (tests): Add test-sysvmsg. * sysvipc/test-sysvmsg.c: New file. * test-skeleton.c (FAIL_UNSUPPORTED): New define.
2016-12-28support: Add support for delayed test failure reportingFlorian Weimer
The new functions support_record_failure records a test failure, but does not terminate the process. The macros TEST_VERIFY and TEST_VERIFY_EXIT check that a condition is true.
2016-12-15Fix assertion failure on test timeoutAndreas Schwab
2016-12-10Fix testsuite timeout handlingAndreas Schwab
2016-12-09support: Introduce new subdirectory for test infrastructureFlorian Weimer
The new test driver in <support/test-driver.c> has feature parity with the old one. The main difference is that its hooking mechanism is based on functions and function pointers instead of macros. This commit also implements a new environment variable, TEST_COREDUMPS, which disables the code which disables coredumps (that is, it enables them if the invocation environment has not disabled them). <test-skeleton.c> defines wrapper functions so that it is possible to use existing macros with the new-style hook functionality. This commit changes only a few test cases to the new test driver, to make sure that it works as expected.