1 Bionic ChangeLog: 2 ----------------- 3 4 Differences between current and Android 2.1: 5 6 - Add support for SH-4 CPU architecture ! 7 8 - __atomic_swap(): use LDREX/STREX CPU instructions on ARMv6 and higher. 9 10 - <arpa/telnet.h>: New header (declarations only, no implementation). 11 12 - <err.h>: New header + implementation. GLibc compatibility. 13 14 - <warn.h>: New header + implementation. GLibc compatibility. 15 16 - <fts.h>: New header + implementation. 17 18 - <mntent.h>: Add missing <stdio.h> include. 19 20 - <regex.h>: New header + implementation. 21 22 - <signal.h>: Added killpg() 23 24 - <stdint.h>: Allow 64-bit type declarations on C99 builds. 25 26 - <stdio.h>: Add fdprintf() and vfdprintf(). Note that GLibc provides 27 the confusing 'dprintf' and 'vdprintf()' functions instead. 28 29 - <stdlib.h>: Fix ptsname_r(): the return type is int instead of char*. 30 The mistake comes from a GLibc man page bug (the man page listed a return 31 type of char*, while the implementation used int. Fixed in late 2009 only). 32 The Bionic implementation was incorrect. Technically, this is an ABI 33 breakage, but code that used this function probably never worked or 34 compiled properly anyway. 35 36 - <strings.h>: Add missing <sys/types.h> include. 37 38 - <sys/queue.h>: Added new header (no implementation - macro templates). 39 40 - <sys/resource.h>: Add rlim_t proper definition. 41 42 - <time64.h>: Add missing C++ header inclusion guards. 43 44 - <unistd.h>: Add getusershell(), setusershell() and endusershell(), though 45 implementation are bogus. GLibc compatibility. 46 47 - <wchar.h>: Add mbstowcs() and wcstombs() 48 49 - add clone() implementation for ARM (x86 and SH-4 not working yet). 50 51 - <sys/epoll.h>: <sys/system_properties.h>: Add missing C++ inclusion guards 52 53 - fix getpwnam() and getpwgrp() to accept "app_0" as a valid user name. 54 55 - fix sem_trywait() to return -1 and set errno to EAGAIN, instead of 56 returning EAGAIN directly. 57 58 - fix sem_post() to wake up multiple threads when called rapidly in 59 succession. 60 61 - DNS: partial implementation of RFC3484 (rule 1, 2, 5, 6, 8, 10 and 62 modified rule 9), for better address selection/sorting. 63 In the process, removed code that was previously used for "sortlist" 64 in /etc/resolv.conf. (resolv.conf is already ignored, so the latter 65 is a no-op for actual functionality.) 66 67 - fix pthread_sigmask() to properly return an error code without touching 68 errno. Previous implementation returned -1 on error, setting errno, which 69 is not Posix compliant. 70 71 - add sigaltstack() implementation for ARM. 72 73 - <time.h>: Properly implement the 'timezone' and 'daylight' global variables 74 (they were not defined previously, though declared in the header). 75 76 - <time.h>: Fix timezone management implementation to properly update 77 'tm_gmtoff' field in 'struct tm' structure. 78 79 - DNS: get rid of spurious random DNS queries when trying to resolve 80 an unknown domain name. Due to an initialization bug, a random DNS search 81 list was generated for each thread if net.dns.search is not defined. 82 83 - <pthread.h>: Add pthread_condattr_init/destroy/setpshared/getpshared functions 84 to enable proper shared conditional variable initialization. 85 86 Modify the pthread_mutex_t and pthread_cond_t implementation to use private 87 futexes for performance reasons. Mutexes and Condvars are no longer shareable 88 between processes by default anymore, unless you use PTHREAD_PROCESS_SHARED 89 with pthread_mutexattr_setpshared() and/or pthread_condattr_setpshared(). 90 91 ------------------------------------------------------------------------------- 92 Differences between Android 2.1 and 2.0.1: 93 94 - zoneinfo: updated data tables to version 2009s 95 96 97 ------------------------------------------------------------------------------- 98 Differences between Android 2.0.1 and 2.0: 99 100 - abort(): ARM-specific hack to preserve the 'lr' register when abort() 101 is called (GCC does not preserve it by default since it thinks that 102 abort() never returns). This improves stack traces considerably. 103 104 105 ------------------------------------------------------------------------------- 106 Differences between Android 2.0 and 1.6: 107 108 - memcmp(), memcpy(): ARMv7 optimized versions. 109 110 - pthread_mutexattr_setpshared(): implementation will not return ENOTSUP 111 if PTHREAD_PROCESS_SHARED is used, because our Mutex implementation can 112 work across multiple processes. 113 114 *HOWEVER* it does not use "robust futexes" which means that held mutexes 115 *are not* automatically released by the kernel when the owner process 116 crashes or exits. This is only done to simplify communication between 117 two always-live system processes, DO NOT USE THIS IN APPLICATIONS ! 118 119 - pthread_mutex_lock_timeout_np(): New Android-specific function to 120 perform a timed lock (). In case of timeout, it returns EBUSY. 121 122 - pthread_cond_timedwait_monotonic_np(): Same as pthread_cond_timedwait() 123 but uses the monotonic clock(). Android-specific. 124 125 - pthread_cond_timedwait_relative_np(): Same as pthread_cond_timedwait() 126 but uses a relative timeout instead. Android-specific. 127 128 - <netinet/in.h>: Now includes <netinet/in6.h>. 129 130 - <netinet/in6.h>: Added IPV6_JOIN_GROUP, IPV6_LEAVE_GROUP, IN6ADDR_ANY_INIT 131 and ipv6mr_interface definitions. 132 133 - <time.h>: 134 * Add missing tzset() declaration. 135 * Add Android-specific strftime_tz(). 136 137 - getaddrinfo(): 138 Only perform IPv6 lookup for AF_UNSPEC if we have IPv6 connectivity. 139 This saves one DNS query per lookup on non-IPv6 systems. 140 141 - mktime(): Fix an infinite loop problen that appeared when switching to 142 GCC 4.4.0. 143 144 - strftime(): fix incorrect handling of dates > 2038 due to 64-bit issue 145 in original code. 146 147 ------------------------------------------------------------------------------- 148 Differences between Android 1.6 and 1.5: 149 150 - C runtime: Fix runtime initialization to be called before any static C++ 151 constructors. This allows these to use pthread functions properly. 152 153 - __aeabi_atexit(): Fix implementation to properly call C++ static destructors 154 when the program exits (or when a shared library is unloaded). 155 156 - <sys/stat.h>: added GLibc compatibility macros definitions: 157 158 #define st_atimensec st_atime_nsec 159 #define st_mtimensec st_mtime_nsec 160 #define st_ctimensec st_ctime_nsec 161 162 - getaddrinfo(): implementation will now allow numeric ports if ai_socktype is 163 set to ANY. This is to match the GLibc behaviour. 164 165 - getservent(): and getservent_r() incorrectly returned the port in host-endian 166 order in the s_port field. It now returns it in big-endian order. 167 168 - DNS: Allow underscore in the middle of DNS labels. While not really 169 standard, this extension is needed for some VPN configurations and is 170 supported by other operating systems. 171 172 - DNS: Support for DNS domain search lists through the new net.dns.search 173 system property. The corresponding value must be a space-separated list of 174 domain suffixes. 175
