2 use crate::errno::Errno;
3 use crate::sys::signal::Signal;
4 use crate::unistd::Pid;
5 use crate::Result;
6 use cfg_if::cfg_if;
7 use libc::{self, c_int};
8 use std::convert::TryFrom;
13 use std::os::unix::io::RawFd;
84 /// Note that there are two Linux-specific enum variants, `PtraceEvent`
105     /// currently-defined events use `SIGTRAP` as the signal; the third
109     /// [`ptrace`(2)]: https://man7.org/linux/man-pages/man2/ptrace.2.html
117     /// [`ptrace`(2)]: https://man7.org/linux/man-pages/man2/ptrace.2.html
135     pub fn pid(&self) -> Option<Pid> {  in pid()
136         use self::WaitStatus::*;  in pid()
148 fn exited(status: i32) -> bool {  in exited()
149     libc::WIFEXITED(status)  in exited()
152 fn exit_status(status: i32) -> i32 {  in exit_status()
153     libc::WEXITSTATUS(status)  in exit_status()
156 fn signaled(status: i32) -> bool {  in signaled()
157     libc::WIFSIGNALED(status)  in signaled()
160 fn term_signal(status: i32) -> Result<Signal> {  in term_signal()
161     Signal::try_from(libc::WTERMSIG(status))  in term_signal()
164 fn dumped_core(status: i32) -> bool {  in dumped_core()
165     libc::WCOREDUMP(status)  in dumped_core()
168 fn stopped(status: i32) -> bool {  in stopped()
169     libc::WIFSTOPPED(status)  in stopped()
172 fn stop_signal(status: i32) -> Result<Signal> {  in stop_signal()
173     Signal::try_from(libc::WSTOPSIG(status))  in stop_signal()
177 fn syscall_stop(status: i32) -> bool {  in syscall_stop()
182     libc::WSTOPSIG(status) == libc::SIGTRAP | 0x80  in syscall_stop()
186 fn stop_additional(status: i32) -> c_int {  in stop_additional()
190 fn continued(status: i32) -> bool {  in continued()
191     libc::WIFCONTINUED(status)  in continued()
203     /// Convert a `wstatus` obtained from `libc::waitpid` into a `WaitStatus`:
206     /// use nix::sys::wait::WaitStatus;
207     /// use nix::sys::signal::Signal;
212     pub fn from_raw(pid: Pid, status: i32) -> Result<WaitStatus> {  in from_raw()
220                     fn decode_stopped(pid: Pid, status: i32) -> Result<WaitStatus> {  in from_raw()
232                     fn decode_stopped(pid: Pid, status: i32) -> Result<WaitStatus> {  in from_raw()
261     unsafe fn from_siginfo(siginfo: &libc::siginfo_t) -> Result<WaitStatus> {  in from_siginfo()
267         assert_eq!(siginfo.si_signo, libc::SIGCHLD);  in from_siginfo()
273             libc::CLD_EXITED => WaitStatus::Exited(pid, si_status),  in from_siginfo()
274             libc::CLD_KILLED | libc::CLD_DUMPED => WaitStatus::Signaled(  in from_siginfo()
277                 siginfo.si_code == libc::CLD_DUMPED,  in from_siginfo()
279             libc::CLD_STOPPED => {  in from_siginfo()
282             libc::CLD_CONTINUED => WaitStatus::Continued(pid),  in from_siginfo()
284             libc::CLD_TRAPPED => {  in from_siginfo()
285                 if si_status == libc::SIGTRAP | 0x80 {  in from_siginfo()
308 ) -> Result<WaitStatus> {  in waitpid()
309     use self::WaitStatus::*;  in waitpid()
319         libc::waitpid(  in waitpid()
320             pid.into().unwrap_or_else(|| Pid::from_raw(-1)).into(),  in waitpid()
335 pub fn wait() -> Result<WaitStatus> {  in wait()
370 pub fn waitid(id: Id, flags: WaitPidFlag) -> Result<WaitStatus> {  in waitid()
372         Id::All => (libc::P_ALL, 0),  in waitid()
373         Id::Pid(pid) => (libc::P_PID, pid.as_raw() as libc::id_t),  in waitid()
374         Id::PGid(pid) => (libc::P_PGID, pid.as_raw() as libc::id_t),  in waitid()
376         Id::PIDFd(fd) => (libc::P_PIDFD, fd as libc::id_t),  in waitid()
382         let mut siginfo: libc::siginfo_t = std::mem::zeroed();  in waitid()
383         Errno::result(libc::waitid(idtype, idval, &mut siginfo, flags.bits()))?;  in waitid()