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This also refreshes the tests to properly compile with the latest host toolchain.
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Original file line number | Diff line number | Diff line change |
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/* Check that clone() is implemented and properly works | ||
*/ | ||
#define __GNU_SOURCE 1 | ||
#include <stdio.h> | ||
#include <errno.h> | ||
#include <sched.h> | ||
#include <unistd.h> | ||
#include <signal.h> | ||
#include <stdlib.h> | ||
#include <sys/ptrace.h> | ||
#include <sys/wait.h> | ||
#include <stdarg.h> | ||
#include <string.h> | ||
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static int | ||
clone_child (void *arg) | ||
{ | ||
errno = 0; | ||
ptrace (PTRACE_TRACEME, 0, 0, 0); | ||
if (errno != 0) | ||
perror ("ptrace"); | ||
if (kill (getpid (), SIGSTOP) < 0) | ||
perror ("kill"); | ||
return 0; | ||
} | ||
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#define PAGE_SIZE 4096 | ||
#define STACK_SIZE (4 * PAGE_SIZE) | ||
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char clone_stack[STACK_SIZE] __attribute__ ((aligned (PAGE_SIZE))); | ||
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int | ||
main () | ||
{ | ||
int pid,child; | ||
int status; | ||
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pid = clone (clone_child, clone_stack + 3 * PAGE_SIZE, | ||
CLONE_VM | SIGCHLD, NULL); | ||
if (pid < 0) | ||
{ | ||
perror ("clone"); | ||
exit (1); | ||
} | ||
printf ("child pid %d\n", pid); | ||
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//sleep(20); | ||
child = waitpid (pid, &status, 0); | ||
printf("waitpid returned %d\n", child); | ||
if (child < 0) { | ||
perror ("waitpid"); | ||
return 1; | ||
} | ||
printf ("child %d, status 0x%x\n", child, status); | ||
return 0; | ||
} |
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