diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/clone-internal.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/clone-internal.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/clone-internal.c b/sysdeps/unix/sysv/linux/clone-internal.c index 7bc991e033..39d76733db 100644 --- a/sysdeps/unix/sysv/linux/clone-internal.c +++ b/sysdeps/unix/sysv/linux/clone-internal.c @@ -76,6 +76,28 @@ __clone_internal_fallback (struct clone_args *cl_args, return ret; } +int +__clone3_internal (struct clone_args *cl_args, int (*func) (void *args), + void *arg) +{ +#ifdef HAVE_CLONE3_WRAPPER +# if __ASSUME_CLONE3 + return __clone3 (cl_args, sizeof (*cl_args), func, arg); +# else + static int clone3_supported = 1; + if (atomic_load_relaxed (&clone3_supported) == 1) + { + int ret = __clone3 (cl_args, sizeof (*cl_args), func, arg); + if (ret != -1 || errno != ENOSYS) + return ret; + + atomic_store_relaxed (&clone3_supported, 0); + } +# endif +#endif + __set_errno (ENOSYS); + return -1; +} int __clone_internal (struct clone_args *cl_args, @@ -83,7 +105,7 @@ __clone_internal (struct clone_args *cl_args, { #ifdef HAVE_CLONE3_WRAPPER int saved_errno = errno; - int ret = __clone3 (cl_args, sizeof (*cl_args), func, arg); + int ret = __clone3_internal (cl_args, func, arg); if (ret != -1 || errno != ENOSYS) return ret; |