unistd_test.cpp revision 9f525644df99cb2f7f81a23ca23840f0a8f82275
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> 25a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes 26a55f63083fb16b2595f517a3260083e5f8cddd02Elliott HughesTEST(unistd, sysconf_SC_MONOTONIC_CLOCK) { 27a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes ASSERT_GT(sysconf(_SC_MONOTONIC_CLOCK), 0); 28a55f63083fb16b2595f517a3260083e5f8cddd02Elliott Hughes} 29428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes 30428f5567be25b8090e3dd72e2d3d337c305b514eElliott HughesTEST(unistd, sbrk) { 31428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes void* initial_break = sbrk(0); 32428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes 33428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes void* new_break = reinterpret_cast<void*>(reinterpret_cast<uintptr_t>(initial_break) + 2000); 34428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes ASSERT_EQ(0, brk(new_break)); 35428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes 36428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes void* final_break = sbrk(0); 37428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes ASSERT_EQ(final_break, new_break); 38428f5567be25b8090e3dd72e2d3d337c305b514eElliott Hughes} 39b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 40b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, truncate) { 41b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 42b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 43b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, truncate(tf.filename, 123)); 44b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 45b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 46b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 47b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 48b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 49b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 50b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, truncate64) { 51b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 52b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 53b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, truncate64(tf.filename, 123)); 54b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 55b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 56b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 57b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 58b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 59b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 60b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, ftruncate) { 61b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 62b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, ftruncate(tf.fd, 123)); 63b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 64b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 65b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 66b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 67b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 68b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 69b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 70b4f7616fd618875768b8fffc122b58bdb84a9969Elliott HughesTEST(unistd, ftruncate64) { 71b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes TemporaryFile tf; 72b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, ftruncate64(tf.fd, 123)); 73b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, close(tf.fd)); 74b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes 75b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes struct stat sb; 76b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(0, stat(tf.filename, &sb)); 77b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes ASSERT_EQ(123, sb.st_size); 78b4f7616fd618875768b8fffc122b58bdb84a9969Elliott Hughes} 7911952073af22568bba0b661f7a9d4402c443a888Elliott Hughes 8011952073af22568bba0b661f7a9d4402c443a888Elliott Hughesstatic bool gPauseTestFlag = false; 8111952073af22568bba0b661f7a9d4402c443a888Elliott Hughesstatic void PauseTestSignalHandler(int) { 8211952073af22568bba0b661f7a9d4402c443a888Elliott Hughes gPauseTestFlag = true; 8311952073af22568bba0b661f7a9d4402c443a888Elliott Hughes} 8411952073af22568bba0b661f7a9d4402c443a888Elliott Hughes 8511952073af22568bba0b661f7a9d4402c443a888Elliott HughesTEST(unistd, pause) { 8613613137bc4266656bffce464e525eb9ae6371f0Christopher Ferris ScopedSignalHandler handler(SIGALRM, PauseTestSignalHandler); 8713613137bc4266656bffce464e525eb9ae6371f0Christopher Ferris 8811952073af22568bba0b661f7a9d4402c443a888Elliott Hughes alarm(1); 8911952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ASSERT_FALSE(gPauseTestFlag); 9011952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ASSERT_EQ(-1, pause()); 9111952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ASSERT_TRUE(gPauseTestFlag); 9211952073af22568bba0b661f7a9d4402c443a888Elliott Hughes} 933d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross 943d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin CrossTEST(unistd, read) { 953d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross int fd = open("/proc/version", O_RDONLY); 963d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_TRUE(fd != -1); 973d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross 983d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross char buf[5]; 993d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(5, read(fd, buf, 5)); 1003d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[0], 'L'); 1013d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[1], 'i'); 1023d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[2], 'n'); 1033d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[3], 'u'); 1043d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(buf[4], 'x'); 1053d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross close(fd); 1063d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross} 1073d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross 1083d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin CrossTEST(unistd, read_EBADF) { 1093d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross // read returns ssize_t which is 64-bits on LP64, so it's worth explicitly checking that 1103d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross // our syscall stubs correctly return a 64-bit -1. 1113d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross char buf[1]; 1123d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(-1, read(-1, buf, sizeof(buf))); 1133d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross ASSERT_EQ(EBADF, errno); 1143d19a8319b9c27af8aa5cfbf495da0fe7fa62d3eColin Cross} 115aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott Hughes 116aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott HughesTEST(unistd, alarm) { 117aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott Hughes ASSERT_EQ(0U, alarm(0)); 118aedb00d04eb7f0b20b6abde702ba94a46577ca68Elliott Hughes} 1199f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes 1209f525644df99cb2f7f81a23ca23840f0a8f82275Elliott HughesTEST(unistd, _exit) { 1219f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes int pid = fork(); 1229f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_NE(-1, pid) << strerror(errno); 1239f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes 1249f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes if (pid == 0) { 1259f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes _exit(99); 1269f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes } 1279f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes 1289f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes int status; 1299f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_EQ(pid, waitpid(pid, &status, 0)); 1309f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_TRUE(WIFEXITED(status)); 1319f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes ASSERT_EQ(99, WEXITSTATUS(status)); 1329f525644df99cb2f7f81a23ca23840f0a8f82275Elliott Hughes} 133