author | Tanguy Pruvot <tanguy.pruvot@gmail.com> | 2011-11-16 19:01:59 (GMT) |
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committer | Koushik Dutta <koushd@gmail.com> | 2011-11-17 02:35:34 (GMT) |
commit | 57d4479f77ab4f5bb2bae10f543b79077a9406f6 (patch) | |
tree | 21a4c27d3561db7c58afd5c167440ca028ef785b | |
parent | 129a798cc76c7173e68e61c74c7b2015059fd7e0 (diff) | |
download | busybox-57d4479f77ab4f5bb2bae10f543b79077a9406f6.zip busybox-57d4479f77ab4f5bb2bae10f543b79077a9406f6.tar.gz busybox-57d4479f77ab4f5bb2bae10f543b79077a9406f6.tar.bz2 |
fix hidden syscall __set_syscall_errno
Conflicts:
Android.mk
include-full/autoconf.h
include-minimal/autoconf.h
-rw-r--r-- | Android.mk | 4 | ||||
-rw-r--r-- | android/libc/__set_errno.c | 56 |
2 files changed, 59 insertions, 1 deletions
@@ -111,12 +111,13 @@ include $(BUILD_STATIC_LIBRARY) include $(CLEAR_VARS) BUSYBOX_CONFIG:=full BUSYBOX_SUFFIX:=bionic -LOCAL_SRC_FILES := $(BUSYBOX_SRC_FILES) +LOCAL_SRC_FILES := $(BUSYBOX_SRC_FILES) android/libc/__set_errno.c LOCAL_C_INCLUDES := $(BUSYBOX_C_INCLUDES) LOCAL_CFLAGS := $(BUSYBOX_CFLAGS) LOCAL_MODULE := busybox LOCAL_MODULE_TAGS := eng LOCAL_MODULE_PATH := $(TARGET_OUT_OPTIONAL_EXECUTABLES) +LOCAL_REQUIRED_MODULES := libm LOCAL_STATIC_LIBRARIES := libclearsilverregex $(LOCAL_MODULE): busybox_prepare include $(BUILD_EXECUTABLE) @@ -159,6 +160,7 @@ LOCAL_CFLAGS += \ LOCAL_FORCE_STATIC_EXECUTABLE := true LOCAL_MODULE := static_busybox LOCAL_MODULE_TAGS := optional +LOCAL_REQUIRED_MODULES := libm LOCAL_STATIC_LIBRARIES := libclearsilverregex libcutils libc libm LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES LOCAL_MODULE_PATH := $(PRODUCT_OUT)/utilities diff --git a/android/libc/__set_errno.c b/android/libc/__set_errno.c new file mode 100644 index 0000000..163d404 --- a/dev/null +++ b/android/libc/__set_errno.c @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2008 The Android Open Source Project + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <errno.h> + + +int __set_errno(int n) +{ + errno = n; + return -1; +} + +/* + * this function is called from syscall stubs, + * (tail-called in the case of 0-4 arg versions) + */ + +__LIBC_HIDDEN__ +int __set_syscall_errno(int n) +{ + /* some syscalls, mmap() for example, have valid return + ** values that are "negative". Since errno values are not + ** greater than 131 on Linux, we will just consider + ** anything significantly out of range as not-an-error + */ + if(n > -256) { + return __set_errno(-n); + } else { + return n; + } +} |