1 /* Wrapper implementation for waitpid for GNU/Linux (LWP layer). 2 3 Copyright (C) 2001-2020 Free Software Foundation, Inc. 4 5 This file is part of GDB. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include "gdbsupport/common-defs.h" 21 22 #include "linux-nat.h" 23 #include "linux-waitpid.h" 24 #include "gdbsupport/gdb_wait.h" 25 26 /* Convert wait status STATUS to a string. Used for printing debug 27 messages only. */ 28 29 char * 30 status_to_str (int status) 31 { 32 static char buf[64]; 33 34 if (WIFSTOPPED (status)) 35 { 36 if (WSTOPSIG (status) == SYSCALL_SIGTRAP) 37 snprintf (buf, sizeof (buf), "%s (stopped at syscall)", 38 strsignal (SIGTRAP)); 39 else 40 snprintf (buf, sizeof (buf), "%s (stopped)", 41 strsignal (WSTOPSIG (status))); 42 } 43 else if (WIFSIGNALED (status)) 44 snprintf (buf, sizeof (buf), "%s (terminated)", 45 strsignal (WTERMSIG (status))); 46 else 47 snprintf (buf, sizeof (buf), "%d (exited)", WEXITSTATUS (status)); 48 49 return buf; 50 } 51 52 /* See linux-waitpid.h. */ 53 54 int 55 my_waitpid (int pid, int *status, int flags) 56 { 57 int ret; 58 59 do 60 { 61 ret = waitpid (pid, status, flags); 62 } 63 while (ret == -1 && errno == EINTR); 64 65 return ret; 66 } 67