| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc/support/port_platform.h> |
| |
| #ifdef GPR_POSIX_SUBPROCESS |
| |
| #include <grpc/support/subprocess.h> |
| |
| #include <unistd.h> |
| #include <assert.h> |
| #include <errno.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <signal.h> |
| #include <stdlib.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc/support/log.h> |
| |
| struct gpr_subprocess { |
| int pid; |
| int joined; |
| }; |
| |
| const char *gpr_subprocess_binary_extension() { return ""; } |
| |
| gpr_subprocess *gpr_subprocess_create(int argc, const char **argv) { |
| gpr_subprocess *r; |
| int pid; |
| char **exec_args; |
| |
| pid = fork(); |
| if (pid == -1) { |
| return NULL; |
| } else if (pid == 0) { |
| exec_args = gpr_malloc(((size_t)argc + 1) * sizeof(char *)); |
| memcpy(exec_args, argv, (size_t)argc * sizeof(char *)); |
| exec_args[argc] = NULL; |
| execv(exec_args[0], exec_args); |
| /* if we reach here, an error has occurred */ |
| gpr_log(GPR_ERROR, "execv '%s' failed: %s", exec_args[0], strerror(errno)); |
| _exit(1); |
| return NULL; |
| } else { |
| r = gpr_malloc(sizeof(gpr_subprocess)); |
| memset(r, 0, sizeof(*r)); |
| r->pid = pid; |
| return r; |
| } |
| } |
| |
| void gpr_subprocess_destroy(gpr_subprocess *p) { |
| if (!p->joined) { |
| kill(p->pid, SIGKILL); |
| gpr_subprocess_join(p); |
| } |
| gpr_free(p); |
| } |
| |
| int gpr_subprocess_join(gpr_subprocess *p) { |
| int status; |
| retry: |
| if (waitpid(p->pid, &status, 0) == -1) { |
| if (errno == EINTR) { |
| goto retry; |
| } |
| gpr_log(GPR_ERROR, "waitpid failed: %s", strerror(errno)); |
| return -1; |
| } |
| return status; |
| } |
| |
| void gpr_subprocess_interrupt(gpr_subprocess *p) { |
| if (!p->joined) { |
| kill(p->pid, SIGINT); |
| } |
| } |
| |
| #endif /* GPR_POSIX_SUBPROCESS */ |