wait4() is BSD/Linux-standard (used by toybox's "time" applet) but NuttX
only had waitpid()+getrusage() separately. Add it to libs/libc/unistd/
built on top of those two existing primitives, so it needs no syscall
plumbing of its own and works unmodified across flat/protected/kernel
build separation. Prototype added to include/sys/wait.h.
Signed-off-by: Alan C. Assis <acassis@gmail.com>
Assisted-by: Claude Sonnet 5 <noreply@anthropic.com>
Add the WCOREDUMP() macro to sys/wait.h to indicate whether a terminated
process produced a core dump. This resolves implicit declaration warnings
in LTP kernel testcases and improves POSIX compliance.
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
Update the WTERMSIG() macro to extract the signal number from the wait
status, changing from constant 'false' to '(((s) >> 8) & 0x7f)' to match
POSIX semantics for processes terminated by signals.
Signed-off-by: guoshichao <guoshichao@xiaomi.com>
Most tools used for compliance and SBOM generation use SPDX identifiers
This change brings us a step closer to an easy SBOM generation.
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
