Unify per-architecture post-execve SIGTRAP check.
Move post-execve SIGTRAP check from get_scno_on_sysenter
(multitude of places on many architectures) to a single location
in trace_syscall_entering. This loosens the logic for some arches,
since many of them had additional checks such as scno == 0.
However, on non-ancient Linux kernels we should never have post-execve
SIGTRAP in the first place, by virtue of using PTRACE_O_TRACEEXEC.
* syscall.c (get_scno_on_sysenter): Remove tcp->flags & TCB_WAITEXECVE checks.
(trace_syscall_entering): Do tcp->flags & TCB_WAITEXECVE check here.
(get_scno_on_sysexit): Tweak comment.
(syscall_fixup): Likewise.
(trace_syscall_exiting): Likewise.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
1 file changed