Michael Goulet 6d33e900d8 Rollup merge of #117957 - the8472:pidfd-wait, r=Mark-Simulacrum ... if available use a Child's pidfd for kill/wait This should get us closer to stabilization of pidfds since they now do something useful. And they're `CLOEXEC` now. ``` $ strace -ffe clone,sendmsg,recvmsg,execve,kill,pidfd_open,pidfd_send_signal,waitpid,waitid ./x test std --no-doc -- pidfd [...] running 1 tests strace: Process 816007 attached [pid 816007] pidfd_open(816006, 0) = 3 [pid 816007] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0c6b787990) = 816008 strace: Process 816008 attached [pid 816007] recvmsg(3, <unfinished ...> [pid 816008] pidfd_open(816008, 0) = 3 [pid 816008] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[3]}], msg_controllen=24, msg_flags=0}, 0) = 0 [pid 816007] <... recvmsg resumed>{msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[4]}], msg_controllen=24, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 0 [pid 816008] execve("/usr/bin/false", ["false"], 0x7ffcf2100048 /* 105 vars */) = 0 [pid 816007] waitid(P_PIDFD, 4, <unfinished ...> [pid 816008] +++ exited with 1 +++ [pid 816007] <... waitid resumed>{si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=816008, si_uid=1001, si_status=1, si_utime=0, si_stime=0}, WEXITED, NULL) = 0 [pid 816007] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=816008, si_uid=1001, si_status=1, si_utime=0, si_stime=0} --- [pid 816007] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDstrace: Process 816009 attached , child_tidptr=0x7f0c6b787990) = 816009 [pid 816007] recvmsg(3, <unfinished ...> [pid 816009] pidfd_open(816009, 0) = 3 [pid 816009] sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[3]}], msg_controllen=24, msg_flags=0}, 0) = 0 [pid 816007] <... recvmsg resumed>{msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="", iov_len=0}], msg_iovlen=1, msg_control=[{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[5]}], msg_controllen=24, msg_flags=MSG_CMSG_CLOEXEC}, MSG_CMSG_CLOEXEC) = 0 [pid 816009] execve("/usr/bin/sleep", ["sleep", "1000"], 0x7ffcf2100048 /* 105 vars */) = 0 [pid 816007] waitid(P_PIDFD, 5, {}, WNOHANG|WEXITED, NULL) = 0 [pid 816007] pidfd_send_signal(5, SIGKILL, NULL, 0) = 0 [pid 816007] waitid(P_PIDFD, 5, <unfinished ...> [pid 816009] +++ killed by SIGKILL +++ [pid 816007] <... waitid resumed>{si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=816009, si_uid=1001, si_status=SIGKILL, si_utime=0, si_stime=0}, WEXITED, NULL) = 0 [pid 816007] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=816009, si_uid=1001, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 816007] +++ exited with 0 +++ ```		2023-11-19 19:14:34 -08:00
..
benches	mv std libs to library/	2020-07-27 19:51:13 -05:00
src	Rollup merge of #117957 - the8472:pidfd-wait, r=Mark-Simulacrum	2023-11-19 19:14:34 -08:00
tests	Move RandomState and DefaultHasher into std::hash, but don't export for now	2023-11-02 20:35:20 -04:00
build.rs	Remove asmjs from library	2023-10-28 23:10:45 -07:00
Cargo.toml	libc: bump dependency to 0.2.150	2023-11-05 18:32:10 +01:00