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Commit 100ce391 authored by Josh Gao's avatar Josh Gao
Browse files

crasher: add option to wait for input before crashing. 

This will be useful for tests that want to do things with crasher's pid
before it crashes.

Bug: http://b/30705528
Test: crasher wait-abort; crasher wait-thread-abort
Change-Id: I8ba826094dc304d6cd0e6ab088e5cfdb35d2007b
parent b5f062bd

debuggerd/crasher.cpp

+7 −1
Original line number Diff line number Diff line
@@ -160,7 +160,11 @@ static int do_action(const char* arg) 
{

    fprintf(stderr, "%s: init pid=%d tid=%d\n", __progname, getpid(), gettid());



    if (!strncmp(arg, "exhaustfd-", strlen("exhaustfd-"))) {

    if (!strncmp(arg, "wait-", strlen("wait-"))) {

      char buf[1];

      TEMP_FAILURE_RETRY(read(STDIN_FILENO, buf, sizeof(buf)));

      return do_action(arg + strlen("wait-"));

    } else if (!strncmp(arg, "exhaustfd-", strlen("exhaustfd-"))) {

      errno = 0;

      while (errno != EMFILE) {

        open("/dev/null", O_RDONLY);
@@ -235,6 +239,8 @@ static int do_action(const char* arg) 
    fprintf(stderr, "on the process' main thread.\n");

    fprintf(stderr, "prefix any of the above with 'exhaustfd-' to exhaust\n");

    fprintf(stderr, "all available file descriptors before crashing.\n");

    fprintf(stderr, "prefix any of the above with 'wait-' to wait until input is received on stdin\n");



    return EXIT_SUCCESS;

}