diff options
Diffstat (limited to 'libc/private/bionic_fdtrack.h')
| -rw-r--r-- | libc/private/bionic_fdtrack.h | 81 |
1 files changed, 42 insertions, 39 deletions
diff --git a/libc/private/bionic_fdtrack.h b/libc/private/bionic_fdtrack.h index 752dd8dc5..c05b32ba6 100644 --- a/libc/private/bionic_fdtrack.h +++ b/libc/private/bionic_fdtrack.h @@ -28,41 +28,43 @@ #pragma once -#include <sys/cdefs.h> #include <stdatomic.h> +#include <sys/cdefs.h> #include "platform/bionic/fdtrack.h" #include "bionic/pthread_internal.h" -#include "private/bionic_tls.h" #include "private/ErrnoRestorer.h" +#include "private/bionic_tls.h" extern "C" _Atomic(android_fdtrack_hook_t) __android_fdtrack_hook; +extern "C" bool __android_fdtrack_globally_disabled; // Macro to record file descriptor creation. // e.g.: // int socket(int domain, int type, int protocol) { // return FDTRACK_CREATE_NAME("socket", __socket(domain, type, protocol)); // } -#define FDTRACK_CREATE_NAME(name, fd_value) \ - ({ \ - int __fd = (fd_value); \ - if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \ - !__predict_false(__get_thread()->is_vforked())) { \ - bionic_tls& tls = __get_bionic_tls(); \ - /* fdtrack_disabled is only true during reentrant calls. */ \ - if (!__predict_false(tls.fdtrack_disabled)) { \ - ErrnoRestorer r; \ - tls.fdtrack_disabled = true; \ - android_fdtrack_event event; \ - event.fd = __fd; \ - event.type = ANDROID_FDTRACK_EVENT_TYPE_CREATE; \ - event.data.create.function_name = name; \ - __android_fdtrack_hook(&event); \ - tls.fdtrack_disabled = false; \ - } \ - } \ - __fd; \ +#define FDTRACK_CREATE_NAME(name, fd_value) \ + ({ \ + int __fd = (fd_value); \ + if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \ + !__predict_false(__get_thread()->is_vforked())) { \ + bionic_tls& tls = __get_bionic_tls(); \ + /* fdtrack_disabled is only true during reentrant calls. */ \ + if (!__predict_false(tls.fdtrack_disabled) && \ + !__predict_false(__android_fdtrack_globally_disabled)) { \ + ErrnoRestorer r; \ + tls.fdtrack_disabled = true; \ + android_fdtrack_event event; \ + event.fd = __fd; \ + event.type = ANDROID_FDTRACK_EVENT_TYPE_CREATE; \ + event.data.create.function_name = name; \ + atomic_load (&__android_fdtrack_hook)(&event); \ + tls.fdtrack_disabled = false; \ + } \ + } \ + __fd; \ }) // Macro to record file descriptor creation, with the current function's name. @@ -74,22 +76,23 @@ extern "C" _Atomic(android_fdtrack_hook_t) __android_fdtrack_hook; // Macro to record file descriptor closure. // Note that this does not actually close the file descriptor. -#define FDTRACK_CLOSE(fd_value) \ - ({ \ - int __fd = (fd_value); \ - if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \ - !__predict_false(__get_thread()->is_vforked())) { \ - bionic_tls& tls = __get_bionic_tls(); \ - if (!__predict_false(tls.fdtrack_disabled)) { \ - int saved_errno = errno; \ - tls.fdtrack_disabled = true; \ - android_fdtrack_event event; \ - event.fd = __fd; \ - event.type = ANDROID_FDTRACK_EVENT_TYPE_CLOSE; \ - __android_fdtrack_hook(&event); \ - tls.fdtrack_disabled = false; \ - errno = saved_errno; \ - } \ - } \ - __fd; \ +#define FDTRACK_CLOSE(fd_value) \ + ({ \ + int __fd = (fd_value); \ + if (__fd != -1 && __predict_false(__android_fdtrack_hook) && \ + !__predict_false(__get_thread()->is_vforked())) { \ + bionic_tls& tls = __get_bionic_tls(); \ + if (!__predict_false(tls.fdtrack_disabled) && \ + !__predict_false(__android_fdtrack_globally_disabled)) { \ + int saved_errno = errno; \ + tls.fdtrack_disabled = true; \ + android_fdtrack_event event; \ + event.fd = __fd; \ + event.type = ANDROID_FDTRACK_EVENT_TYPE_CLOSE; \ + atomic_load (&__android_fdtrack_hook)(&event); \ + tls.fdtrack_disabled = false; \ + errno = saved_errno; \ + } \ + } \ + __fd; \ }) |