unistd_test.cpp revision 7086ad6919feb2415c6027163f5c63323bcca27c
1a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes/* 2a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * Copyright (C) 2012 The Android Open Source Project 3a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * 4a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 5a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * you may not use this file except in compliance with the License. 6a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * You may obtain a copy of the License at 7a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * 8a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 9a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * 10a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * Unless required by applicable law or agreed to in writing, software 11a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 12a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * See the License for the specific language governing permissions and 14a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes * limitations under the License. 15a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes */ 16a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes 17a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes#include <gtest/gtest.h> 1813613137bc4266656bffce464e525eb9ae6371f0Christopher Ferris#include "ScopedSignalHandler.h" 19b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes#include "TemporaryFile.h" 20a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes 21915fefb62e1beed3da26fe299a8141645733a925Elliott Hughes#include <errno.h> 223d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross#include <fcntl.h> 23428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes#include <stdint.h> 24a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes#include <unistd.h> 257086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes#include <sys/syscall.h> 26764a99361130dceda62bbc4f8780bbf395dbc424Elliott Hughes#include <sys/types.h> 27764a99361130dceda62bbc4f8780bbf395dbc424Elliott Hughes#include <sys/wait.h> 28a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes 29a55f63083fb16b2595f517a3260083e5f8cddd02Elliott HughesTEST(unistd, sysconf_SC_MONOTONIC_CLOCK) { 30a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0); 31a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes} 32428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes 33533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughesstatic void* get_brk() { 34533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes return sbrk(0); 35533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes} 36533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 37533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughesstatic void* page_align(uintptr_t addr) { 38533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes uintptr_t mask = sysconf(_SC_PAGE_SIZE) - 1; 39533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes return reinterpret_cast<void*>((addr + mask) & ~mask); 40533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes} 41533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 42533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott HughesTEST(unistd, brk) { 43533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes void* initial_break = get_brk(); 44533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 45533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes // The kernel aligns the break to a page. 46533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes void* new_break = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(initial_break) + 1); 47533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(0, brk(new_break)); 48533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_GE(get_brk(), new_break); 49428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes 50533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes new_break = page_align(reinterpret_cast<uintptr_t>(initial_break) + sysconf(_SC_PAGE_SIZE)); 51428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes ASSERT_EQ(0, brk(new_break)); 52533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(get_brk(), new_break); 53533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes} 54533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 55533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott HughesTEST(unistd, brk_ENOMEM) { 56533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(-1, brk(reinterpret_cast<void*>(-1))); 57533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(ENOMEM, errno); 58533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes} 59533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 60738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#if defined(__GLIBC__) 61738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#define SBRK_MIN INTPTR_MIN 62738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#define SBRK_MAX INTPTR_MAX 63738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#else 64738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#define SBRK_MIN PTRDIFF_MIN 65738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#define SBRK_MAX PTRDIFF_MAX 66738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#endif 67738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 68533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott HughesTEST(unistd, sbrk_ENOMEM) { 69738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#if defined(__BIONIC__) && !defined(__LP64__) 70738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // There is no way to guarantee that all overflow conditions can be tested 71738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // without manipulating the underlying values of the current break. 72738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris extern void* __bionic_brk; 73738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 74738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris class ScopedBrk { 75738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris public: 76738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ScopedBrk() : saved_brk_(__bionic_brk) {} 77738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris virtual ~ScopedBrk() { __bionic_brk = saved_brk_; } 78738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 79738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris private: 80738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris void* saved_brk_; 81738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris }; 82738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 83738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ScopedBrk scope_brk; 84738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 85738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // Set the current break to a point that will cause an overflow. 86738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris __bionic_brk = reinterpret_cast<void*>(static_cast<uintptr_t>(PTRDIFF_MAX) + 2); 87533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 88533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes // Can't increase by so much that we'd overflow. 89533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(reinterpret_cast<void*>(-1), sbrk(PTRDIFF_MAX)); 90533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(ENOMEM, errno); 91533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes 92738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // Set the current break to a point that will cause an overflow. 93738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris __bionic_brk = reinterpret_cast<void*>(static_cast<uintptr_t>(PTRDIFF_MAX)); 94428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes 95533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(reinterpret_cast<void*>(-1), sbrk(PTRDIFF_MIN)); 96533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes ASSERT_EQ(ENOMEM, errno); 97738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 98738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris __bionic_brk = reinterpret_cast<void*>(static_cast<uintptr_t>(PTRDIFF_MAX) - 1); 99738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 100738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ASSERT_EQ(reinterpret_cast<void*>(-1), sbrk(PTRDIFF_MIN + 1)); 101738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ASSERT_EQ(ENOMEM, errno); 102738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#else 103738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris class ScopedBrk { 104738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris public: 105738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ScopedBrk() : saved_brk_(get_brk()) {} 106738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris virtual ~ScopedBrk() { brk(saved_brk_); } 107738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 108738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris private: 109738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris void* saved_brk_; 110738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris }; 111738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 112738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ScopedBrk scope_brk; 113738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 114738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris uintptr_t cur_brk = reinterpret_cast<uintptr_t>(get_brk()); 115738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris if (cur_brk < static_cast<uintptr_t>(-(SBRK_MIN+1))) { 116738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // Do the overflow test for a max negative increment. 117738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ASSERT_EQ(reinterpret_cast<void*>(-1), sbrk(SBRK_MIN)); 118738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#if defined(__BIONIC__) 119738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // GLIBC does not set errno in overflow case. 120738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ASSERT_EQ(ENOMEM, errno); 121738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#endif 122738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris } 123738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris 124738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris uintptr_t overflow_brk = static_cast<uintptr_t>(SBRK_MAX) + 2; 125738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris if (cur_brk < overflow_brk) { 126738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // Try and move the value to PTRDIFF_MAX + 2. 127738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris cur_brk = reinterpret_cast<uintptr_t>(sbrk(overflow_brk)); 128738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris } 129738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris if (cur_brk >= overflow_brk) { 130738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ASSERT_EQ(reinterpret_cast<void*>(-1), sbrk(SBRK_MAX)); 131738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#if defined(__BIONIC__) 132738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris // GLIBC does not set errno in overflow case. 133738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris ASSERT_EQ(ENOMEM, errno); 134738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris#endif 135738b0cc5e95a9a650e9621603f4dd8dd16b07568Christopher Ferris } 136533dde4dbf87d6615952be3654fc74e5ff2e1003Elliott Hughes#endif 137428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes} 138b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 139b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, truncate) { 140b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 141b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 142b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, truncate(tf.filename, 123)); 143b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 144b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 145b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 146b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 147b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 148b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 149b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, truncate64) { 150b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 151b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 152b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, truncate64(tf.filename, 123)); 153b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 154b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 155b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 156b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 157b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 158b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 159b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, ftruncate) { 160b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 161b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, ftruncate(tf.fd, 123)); 162b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 163b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 164b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 165b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 166b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 167b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 168b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 169b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, ftruncate64) { 170b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 171b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, ftruncate64(tf.fd, 123)); 172b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 173b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 174b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 175b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 176b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 177b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 17811952073af22568bba0b661f7a9d4402c443a888Elliott Hughes 1791728b2396591853345507a063ed6075dfd251706Elliott Hughesstatic bool g_pause_test_flag = false; 18011952073af22568bba0b661f7a9d4402c443a888Elliott Hughesstatic void PauseTestSignalHandler(int) { 1811728b2396591853345507a063ed6075dfd251706Elliott Hughes g_pause_test_flag = true; 18211952073af22568bba0b661f7a9d4402c443a888Elliott Hughes} 18311952073af22568bba0b661f7a9d4402c443a888Elliott Hughes 18411952073af22568bba0b661f7a9d4402c443a888Elliott HughesTEST(unistd, pause) { 18513613137bc4266656bffce464e525eb9ae6371f0Christopher Ferris ScopedSignalHandler handler(SIGALRM, PauseTestSignalHandler); 18613613137bc4266656bffce464e525eb9ae6371f0Christopher Ferris 18711952073af22568bba0b661f7a9d4402c443a888Elliott Hughes alarm(1); 1881728b2396591853345507a063ed6075dfd251706Elliott Hughes ASSERT_FALSE(g_pause_test_flag); 18911952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ASSERT_EQ(-1, pause()); 1901728b2396591853345507a063ed6075dfd251706Elliott Hughes ASSERT_TRUE(g_pause_test_flag); 19111952073af22568bba0b661f7a9d4402c443a888Elliott Hughes} 1923d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross 1933d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin CrossTEST(unistd, read) { 1943d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross int fd = open("/proc/version", O_RDONLY); 1953d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_TRUE(fd != -1); 1963d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross 1973d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross char buf[5]; 1983d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(5, read(fd, buf, 5)); 1993d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[0], 'L'); 2003d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[1], 'i'); 2013d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[2], 'n'); 2023d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[3], 'u'); 2033d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[4], 'x'); 2043d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross close(fd); 2053d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross} 2063d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross 2073d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin CrossTEST(unistd, read_EBADF) { 2083d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross // read returns ssize_t which is 64-bits on LP64, so it's worth explicitly checking that 2093d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross // our syscall stubs correctly return a 64-bit -1. 2103d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross char buf[1]; 2113d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(-1, read(-1, buf, sizeof(buf))); 2123d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(EBADF, errno); 2133d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross} 214aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott Hughes 215aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott HughesTEST(unistd, alarm) { 216aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott Hughes ASSERT_EQ(0U, alarm(0)); 217aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott Hughes} 2189f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes 2199f525644df99cb2f7f81a23ca23840f0a8f82275Elliott HughesTEST(unistd, _exit) { 2209f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes int pid = fork(); 2219f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_NE(-1, pid) << strerror(errno); 2229f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes 2239f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes if (pid == 0) { 2249f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes _exit(99); 2259f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes } 2269f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes 2279f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes int status; 2289f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_EQ(pid, waitpid(pid, &status, 0)); 2299f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_TRUE(WIFEXITED(status)); 2309f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_EQ(99, WEXITSTATUS(status)); 2319f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes} 232cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 233cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy KraynovTEST(unistd, getenv_unsetenv) { 234cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, setenv("test-variable", "hello", 1)); 235cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_STREQ("hello", getenv("test-variable")); 236cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, unsetenv("test-variable")); 237cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_TRUE(getenv("test-variable") == NULL); 238cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov} 239cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 240cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy KraynovTEST(unistd, unsetenv_EINVAL) { 241cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, unsetenv(NULL)); 242cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 243cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, unsetenv("")); 244cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 245cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, unsetenv("a=b")); 246cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 247cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov} 248cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 249cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy KraynovTEST(unistd, setenv_EINVAL) { 250cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, setenv(NULL, "value", 0)); 251cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 252cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, setenv(NULL, "value", 1)); 253cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 254cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, setenv("", "value", 0)); 255cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 256cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, setenv("", "value", 1)); 257cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 258cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, setenv("a=b", "value", 0)); 259cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 260cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(-1, setenv("a=b", "value", 1)); 261cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(EINVAL, errno); 262cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov} 263cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 264cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy KraynovTEST(unistd, setenv) { 265cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, unsetenv("test-variable")); 266cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 267cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov char a[] = "a"; 268cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov char b[] = "b"; 269cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov char c[] = "c"; 270cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 271cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // New value. 272cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(0, setenv("test-variable", a, 0)); 273cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_STREQ(a, getenv("test-variable")); 274cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 275cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // Existing value, no overwrite. 276cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(0, setenv("test-variable", b, 0)); 277cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_STREQ(a, getenv("test-variable")); 278cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 279cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // Existing value, overwrite. 280cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(0, setenv("test-variable", c, 1)); 281cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_STREQ(c, getenv("test-variable")); 282cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // But the arrays backing the values are unchanged. 283cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ('a', a[0]); 284cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ('b', b[0]); 285cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ('c', c[0]); 286cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 287cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, unsetenv("test-variable")); 288cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov} 289cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 290cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy KraynovTEST(unistd, putenv) { 291cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, unsetenv("a")); 292cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 293cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov char* s1 = strdup("a=b"); 294cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, putenv(s1)); 295cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 296cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_STREQ("b", getenv("a")); 297cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov s1[2] = 'c'; 298cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_STREQ("c", getenv("a")); 299cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 300cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov char* s2 = strdup("a=b"); 301cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, putenv(s2)); 302cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 303cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_STREQ("b", getenv("a")); 304cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ('c', s1[2]); 305cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 306cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, unsetenv("a")); 307cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov free(s1); 308cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov free(s2); 309cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov} 310cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 311cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy KraynovTEST(unistd, clearenv) { 312cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov extern char** environ; 313cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 314cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // Guarantee that environ is not initially empty... 315cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, setenv("test-variable", "a", 1)); 316cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 317cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // Stash a copy. 318cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov std::vector<char*> old_environ; 319cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov for (size_t i = 0; environ[i] != NULL; ++i) { 320cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov old_environ.push_back(strdup(environ[i])); 321cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov } 322cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 323cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov ASSERT_EQ(0, clearenv()); 324cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 325cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_TRUE(environ == NULL || environ[0] == NULL); 326cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(NULL, getenv("test-variable")); 327cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(0, setenv("test-variable", "post-clear", 1)); 328cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_STREQ("post-clear", getenv("test-variable")); 329cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 330cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // Put the old environment back. 331cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov for (size_t i = 0; i < old_environ.size(); ++i) { 332cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(0, putenv(old_environ[i])); 333cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov } 334cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 335cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov // Check it wasn't overwritten. 336cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_STREQ("a", getenv("test-variable")); 337cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov 338cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov EXPECT_EQ(0, unsetenv("test-variable")); 339cbf6df0459f05e180d1c50b3f5b36cdd483193c6Grigoriy Kraynov} 340a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 341a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughesstatic void TestFsyncFunction(int (*fn)(int)) { 342a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes int fd; 343a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 344a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes // Can't sync an invalid fd. 345a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes errno = 0; 346a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(-1, fn(-1)); 347a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(EBADF, errno); 348a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 349a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes // It doesn't matter whether you've opened a file for write or not. 350a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes TemporaryFile tf; 351a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes ASSERT_NE(-1, tf.fd); 352a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 353a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(0, fn(tf.fd)); 354a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 355a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes ASSERT_NE(-1, fd = open(tf.filename, O_RDONLY)); 356a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(0, fn(fd)); 357a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes close(fd); 358a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 359a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes ASSERT_NE(-1, fd = open(tf.filename, O_RDWR)); 360a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(0, fn(fd)); 361a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes close(fd); 362a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 363a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes // The fd can even be a directory. 364a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes ASSERT_NE(-1, fd = open("/", O_RDONLY)); 365a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(0, fn(fd)); 366a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes close(fd); 367a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 368a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes // But some file systems may choose to be fussy... 369a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes errno = 0; 370a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes ASSERT_NE(-1, fd = open("/proc/version", O_RDONLY)); 371a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(-1, fn(fd)); 372a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes EXPECT_EQ(EINVAL, errno); 373a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes close(fd); 374a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes} 375a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 376a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott HughesTEST(unistd, fdatasync) { 377a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes TestFsyncFunction(fdatasync); 378a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes} 379a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes 380a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott HughesTEST(unistd, fsync) { 381a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes TestFsyncFunction(fsync); 382a62a28d1d9c8df7cb77e4bca19814922729b5291Elliott Hughes} 3837086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 3847086ad6919feb2415c6027163f5c63323bcca27cElliott HughesTEST(unistd, getpid_caching_and_fork) { 3857086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes pid_t parent_pid = getpid(); 3867086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(syscall(__NR_getpid), parent_pid); 3877086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 3887086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes pid_t fork_result = fork(); 3897086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_NE(fork_result, -1); 3907086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes if (fork_result == 0) { 3917086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes // We're the child. 3927086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(syscall(__NR_getpid), getpid()); 3937086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(parent_pid, getppid()); 3947086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes _exit(123); 3957086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes } else { 3967086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes // We're the parent. 3977086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(parent_pid, getpid()); 3987086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 3997086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes int status; 4007086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(fork_result, waitpid(fork_result, &status, 0)); 4017086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_TRUE(WIFEXITED(status)); 4027086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(123, WEXITSTATUS(status)); 4037086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes } 4047086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes} 4057086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 4067086ad6919feb2415c6027163f5c63323bcca27cElliott Hughesstatic void GetPidCachingHelperHelper() { 4077086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(syscall(__NR_getpid), getpid()); 4087086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes} 4097086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 4107086ad6919feb2415c6027163f5c63323bcca27cElliott Hughesstatic void* GetPidCachingHelper(void*) { 4117086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes GetPidCachingHelperHelper(); // Can't assert in a non-void function. 4127086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes return NULL; 4137086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes} 4147086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 4157086ad6919feb2415c6027163f5c63323bcca27cElliott HughesTEST(unistd, getpid_caching_and_pthread_create) { 4167086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes pid_t parent_pid = getpid(); 4177086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 4187086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes pthread_t t; 4197086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(0, pthread_create(&t, NULL, GetPidCachingHelper, NULL)); 4207086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 4217086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(parent_pid, getpid()); 4227086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes 4237086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes void* result; 4247086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(0, pthread_join(t, &result)); 4257086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes ASSERT_EQ(NULL, result); 4267086ad6919feb2415c6027163f5c63323bcca27cElliott Hughes} 427