/* * spawnvp function * * Copyright 2003 Dimitrie O. Paun * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #include "config.h" #include "wine/port.h" #if !defined(HAVE__SPAWNVP) && !defined(_WIN32) #include <errno.h> #include <signal.h> #include <stdlib.h> #ifdef HAVE_SYS_WAIT_H #include <sys/wait.h> #endif #include <sys/stat.h> #ifdef HAVE_UNISTD_H # include <unistd.h> #endif int _spawnvp(int mode, const char *cmdname, const char *const argv[]) { int pid, status, wret; if (mode == _P_OVERLAY) { execvp(cmdname, (char **)argv); /* if we get here it failed */ #ifdef ENOTSUP if (errno != ENOTSUP) /* exec fails on MacOS if the process has multiple threads */ #endif return -1; } pid = fork(); if (pid == 0) { /* in child */ if (mode == _P_DETACH) { pid = fork(); if (pid == -1) _exit(1); else if (pid > 0) _exit(0); /* else in grandchild */ } signal( SIGPIPE, SIG_DFL ); execvp(cmdname, (char **)argv); _exit(1); } if (pid == -1) return -1; if (mode == _P_OVERLAY) exit(0); if (mode == _P_WAIT || mode == _P_DETACH) { while (pid != (wret = waitpid(pid, &status, 0))) if (wret == -1 && errno != EINTR) break; if (pid == wret && WIFEXITED(status)) { if (mode == _P_WAIT) pid = WEXITSTATUS(status); else /* mode == _P_DETACH */ if (WEXITSTATUS(status) != 0) /* child couldn't fork grandchild */ pid = -1; } else { if (mode == _P_WAIT) pid = 255; /* abnormal exit with an abort or an interrupt */ else /* mode == _P_DETACH */ pid = -1; } } return pid; } #endif /* HAVE__SPAWNVP */