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Add fork/vfork/posix_spawn tests for processes within pgrp New tests: - fork_setpgid - vfork_setpgid - posix_spawn_setpgid - unrelated_tracer_fork_setpgid - unrelated_tracer_vfork_setpgid - unrelated_tracer_posix_spawn_setpgid These tests trigger a kernel assert for pg_jobc going negative. The tests are temporarily skipped.
Ignore interception of SIGCHLD signals in the debugger Set SIGPASS for SIGCHLD for the traced child in the following tests: - unrelated_tracer_fork* - unrelated_tracer_vfork* - unrelated_tracer_posix_spawn* There is a race that SIGCHLD might be blocked during forking and dropped. PR/55241 by Andreas Gustafsson
Fix typo in test names Noted by <joerg>
Ignore interception of SIGCHLD signals in the debugger Set SIGPASS for SIGCHLD for the traced child in the following tests: - posix_spawn_singalmasked - posix_spawn_singalignored - fork_singalmasked - fork_singalignored - vfork_singalmasked - vfork_singalignored - vforkdone_singalmasked - vforkdone_singalignored There is a race that SIGCHLD might be blocked during forking and dropped. PR/55241 by Andreas Gustafsson
Ignore interception of the SIGCHLD signals. SIGCHLD once blocked is discarded by the kernel as it has the SA_IGNORE property. During the fork(2) operation all signals can be shortly blocked and missed (unless there is a registered signal handler in the traced child). This leads to a race in this test if there would be an intention to catch SIGCHLD. Fixes PR lib/55241 by Andreas Gustafsson
Fix race in fork_singalmasked ELF RTLD after rtld.c r. 1.204 introduced locking that wraps the fork syscall. This locking changes signal mask of the calling process during the forking process. Instead of comparing old and new signal mask, just after the forking operation, check whether the expected signal is still masked and in another test whether it is still ignored.
Move fork/vfork/posix_spawn tests out of t_ptrace_wait.c to t_ptrace_fork_wait.h The same tests are now included with the preprocessor in t_ptrace_wait.c. No functional change intended.