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Commit 91ad653c authored by Josh Gao's avatar Josh Gao
Browse files

crasher: add a case that uses PR_SET_NO_NEW_PRIVS. 

Bug: http://b/34684590
Test: crasher no_new_privs
Change-Id: I400d599116e3f3c27f5ea46d260e288cf900e156
parent 42aa9a14

debuggerd/crasher/crasher.cpp

+9 −0
Original line number Diff line number Diff line
@@ -26,6 +26,7 @@ 
#include <stdlib.h>

#include <string.h>

#include <sys/mman.h>

#include <sys/prctl.h>

#include <unistd.h>



// We test both kinds of logging.
@@ -189,6 +190,8 @@ static int usage() { 
    fprintf(stderr, "  readdir-NULL          pass a null pointer to readdir\n");

    fprintf(stderr, "  strlen-NULL           pass a null pointer to strlen\n");

    fprintf(stderr, "\n");

    fprintf(stderr, "  no_new_privs          set PR_SET_NO_NEW_PRIVS and then abort\n");

    fprintf(stderr, "\n");

    fprintf(stderr, "prefix any of the above with 'thread-' to run on a new thread\n");

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

    fprintf(stderr, "all available file descriptors before crashing.\n");
@@ -276,6 +279,12 @@ noinline int do_action(const char* arg) { 
    } else if (!strcasecmp(arg, "kuser_cmpxchg64")) {

        return __kuser_cmpxchg64(0, 0, 0);

#endif

    } else if (!strcasecmp(arg, "no_new_privs")) {

        if (prctl(PR_SET_NO_NEW_PRIVS, 1) != 0) {

          fprintf(stderr, "prctl(PR_SET_NO_NEW_PRIVS, 1) failed: %s\n", strerror(errno));

          return EXIT_SUCCESS;

        }

        abort();

    } else {

        return usage();

    }