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* remove legacy i386 fallback stdarg implementation and frameworkRich Felker2016-12-151-4/+0
| | | | | | | | | this has been slated for removal for a long time. there is fundamentally no way to implement stdarg without compiler assistance; any attempt to do so has serious undefined behavior; its working depends not just (as a common misconception goes) on ABI, but also on assumptions about compiler code generation internal to a translation unit, which is not subject to external ABI constraints.
* generalize ELF hash table types not to assume 32-bit entriesRich Felker2016-11-111-2/+1
| | | | | | | | | | alpha and s390x gratuitously use 64-bit entries (wasting 2x space and cache utilization) despite the values always being 32-bit. based on patch by Bobby Bingham, with changes suggested by Alexander Monakov to use the public Elf_Symndx type from link.h (and make it properly variable by arch) rather than adding new internal infrastructure for handling the type.
* add limited pthread_setattr_default_np API to set stack size defaultsRich Felker2016-11-081-0/+2
| | | | | | | | | based on patch by Timo Teräs: While generally this is a bad API, it is the only existing API to affect c++ (std::thread) and c11 (thrd_create) thread stack size. This patch allows applications only to increate stack and guard page sizes.
* make netinet/in.h suppress clashing definitions from kernel headersRich Felker2016-11-071-0/+15
| | | | | | | | | | | | | | | the linux kernel uapi headers provide their own definitions of the structures from netinet/in.h, resulting in errors when a program includes both the standard libc header and one or more of the networking-related kernel headers that pull in the kernel definitions. as before, we do not attempt to support the case where kernel headers are included before the libc ones, since the kernel definitions may have subtly incorrect types, namespace violations, etc. however, we can easily support the inclusion of the kernel headers after the libc ones, since the kernel headers provide a public interface for suppressing their definitions. this patch adds the necessary macro definitions for such suppression.
* don't claim support for resolv.h APIs that aren't supportedRich Felker2016-11-071-1/+1
| | | | | | | | | the value 19991006 for __RES implies availability of res_ninit and related functions that take a resolver state argument; these are not supported since our resolver is stateless. instead claim support for just the older API by defining __RES to 19960801. based on patch by Dmitrij D. Czarkoff.
* remove redundant feature test macro checks in sys/time.hRich Felker2016-11-071-5/+0
| | | | | this header is XSI-shaded itself and thus does not need to limit specific content to _XOPEN_SOURCE.
* fix various header namespace issues under feature-test-macro controlRich Felker2016-10-206-7/+18
| | | | reported and changes suggested by Daniel Sabogal.
* remove parameter names from public headersRich Felker2016-10-206-9/+9
| | | | | inclusion of these names was unintentional and in most cases is a namespace violation. Daniel Sabogal tracked down and reported these.
* fix misspelling of a legacy macro name in sys/param.hRich Felker2016-10-201-1/+1
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* add missing if_ether.h constantsDaniel Sabogal2016-10-201-0/+3
| | | | | | | | | | | | ETH_P_HSR (IEC 62439-3 HSRv1) added in linux 4.7 commit ee1c27977284907d40f7f72c2d078d709f15811f ETH_P_TSN (IEEE 1722) added in linux 4.3 commit 1ab1e895492d8084dfc1c854efacde219e56b8c1 this constant breaks the ascending order to match the kernel header ETH_P_XDSA (Multiplexed DSA protocol) added in linux 3.18 commit 3e8a72d1dae374cf6fc1dba97cec663585845ff9
* add missing if_arp.h constantDaniel Sabogal2016-10-201-0/+1
| | | | | ARPHRD_6LOWPAN (IPv6 over LoWPAN) added in linux 3.14 commit 0abc652c796dab74d34d60473ec5594cd21620be
* fix typo in utmpx.hDaniel Sabogal2016-10-201-1/+1
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* add missing confstr constantsDaniel Sabogal2016-10-201-0/+2
| | | | | | | | | | the _CS_V6_ENV and _CS_V7_ENV constants are required to be available for use with confstr. glibc defines these constants with values 1148 and 1149, respectively. the only missing (and required) confstr constants are _CS_POSIX_V7_THREADS_CFLAGS and _CS_POSIX_V7_THREADS_LDFLAGS which remain unavailable in glibc.
* add pthread_setname_npFelix Janda2016-10-201-0/+1
| | | | the thread name is displayed by gdb's "info threads".
* update icmphdr struct following linux v4.8Szabolcs Nagy2016-10-201-0/+1
| | | | | add union field that is used in the kernel for SIT/GRE tunneling ICMPv4 messages. see linux commit 20e1954fe238dbe5f8d3a979e593fe352bd703cf
* add TCP_REPAIR_WINDOW to netinet/tcp.h from linux v4.8Szabolcs Nagy2016-10-201-0/+9
| | | | | another kernel internal state exposure for checkpoint-restore. see linux commit b1ed4c4fa9a5ccf325184fd90edc50978ef6e33a
* add bits/hwcap.h and include it in sys/auxv.hSzabolcs Nagy2016-10-201-0/+1
| | | | | | | | | aarch64, arm, mips, mips64, mipsn32, powerpc, powerpc64 and sh have cpu feature bits defined in linux for AT_HWCAP auxv entry, so expose those in sys/auxv.h it seems the mips hwcaps were never exposed to userspace neither by linux nor by glibc, but that's most likely an oversight.
* elf.h: update EM_ elf machine defines and add R_BPF_ definesSzabolcs Nagy2016-10-201-1/+101
| | | | | | | | sync with gabi: http://www.sco.com/developers/gabi/latest/ch4.eheader.html EM_BPF is new in linux v4.8 and officially assigned: https://lists.iovisor.org/pipermail/iovisor-dev/2016-June/000266.html added related relocs too.
* add ETH_P_NCSI to netinet/if_ether.h from linux v4.8Szabolcs Nagy2016-10-201-0/+1
| | | | see linux commit 6389eaa7fa9c3ee6c7d39f6087b86660d17236ac
* fix undefined behavior in sched.h cpu_set_t usageRich Felker2016-09-191-3/+3
| | | | | | | | | | | since cpu sets can be dynamically allocated and have variable size, accessing their contents via ->__bits is not valid; performing pointer arithmetic outside the range of the size of the declared __bits array results in undefined beahavior. instead, only use cpu_set_t for fixed-size cpu set objects (instantiated by the caller) and as an abstract pointer type for dynamically allocated ones. perform all accesses simply by casting the abstract pointer type cpuset_t * back to unsigned long *.
* add missing *_unlocked and wcsftime_l prototypes to wchar.hDaniel Sabogal2016-09-161-0/+15
| | | | these functions had been implemented, but prototypes were not made available
* fix ifru_data and ifcu_buf types in net/if.hDaniel Sabogal2016-09-161-2/+2
| | | | | glibc, freebsd, and openbsd use character pointers (caddr_t) for these fields. only linux uses void pointer for the ifru_data type.
* restore _Noreturn to __assert_failRich Felker2016-08-301-1/+1
| | | | | | | | | | | | this reverts commit 2c1f8fd5da3306fd7c8a2267467e44eb61f12dd4. without the _Noreturn attribute, the compiler cannot use asserts to perform reachability/range analysis. this leads to missed optimizations and spurious warnings. the original backtrace problem that prompted the removal of _Noreturn was not clearly documented at the time, but it seems to happen only when libc was built without -g, which also breaks many other backtracing cases.
* fix FFSYNC by changing it to O_SYNCDuncan Overbruck2016-08-301-1/+1
| | | | O_FSYNC was never defined and is legacy/wrong, nothing seems to use it.
* add SS_AUTODISARM sigaltstack ss_flags from linux v4.7 to signal.hSzabolcs Nagy2016-08-301-0/+2
| | | | | only matters if swapcontext is used in a signal handler running on an altstack, new in linux commit 2a74213838104a41588d86fd5e8d344972891ace
* add UDP_ENCAP_GTP0, UDP_ENCAP_GTP1U from linux v4.7 to netinet/udp.hSzabolcs Nagy2016-08-301-0/+2
| | | | | for GPRS tunneling protocol, new in linux commit 459aa660eb1d8ce67080da1983bb81d716aa5a69
* add PF_QIPCRTR, AF_QIPCRTR from linux v4.7 to sys/socket.hSzabolcs Nagy2016-08-301-1/+3
| | | | | macros for qualcom ip router protocol, new in linux commit bdabad3e363d825ddf9679dd431cca0b2c30f881
* add stdc-predef.h for library-level predefined macrosRich Felker2016-07-031-0/+10
| | | | | | | | | | | modern compilers (for gcc, versions 4.8 and later) automatically pre-include <stdc-predef.h> to obtain the values of certain predefined macros specified by ISO C but which reflect properties of the library implementation, not just the compiler. provide values indicating that wchar_t is Unicode-encoded and that Annex F (IEEE floating point) is supported unless the compiler indicates otherwise. based on patch by Masanori Ogino.
* make brace placement in public header typedef'd structs consistentRich Felker2016-07-033-16/+8
| | | | | | commit befa5866ee30d09c0c96e88af2eabff5911342ea performed this change for struct definitions that did not also involve typedef, but omitted the latter.
* add EF_SH_ sh specific macros to elf.hSzabolcs Nagy2016-07-031-1/+22
| | | | | last time elf.h was thoroughly updated sh was not yet supported so these processor specific e_flags were missing.
* add NT_ARM_SYSTEM_CALL to elf.hSzabolcs Nagy2016-07-031-0/+1
| | | | new regset in linux v3.18 for ptrace.
* add missing x86 relocs to elf.hSzabolcs Nagy2016-07-031-2/+5
| | | | | see https://sourceware.org/ml/libc-alpha/2016-01/msg00822.html
* add DT_MIPS_RLD_MAP_REL to elf.hSzabolcs Nagy2016-07-031-1/+2
| | | | marks different RLD_MAP for debugging PIE binaries.
* add SHF_COMPRESSED section flag to elf.hSzabolcs Nagy2016-07-031-0/+23
| | | | | following http://www.sco.com/developers/gabi/latest/ch4.sheader.html
* add powerpc tls optimization related definitions to elf.hSzabolcs Nagy2016-07-031-2/+6
| | | | | see https://sourceware.org/ml/libc-alpha/2015-03/msg00580.html
* add nios2 definitions to elf.hSzabolcs Nagy2016-07-031-0/+50
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* update elf.h with mips abi flags supportSzabolcs Nagy2016-07-031-1/+70
| | | | | following https://sourceware.org/ml/libc-alpha/2014-05/msg00332.html
* update elf.h with new aarch64 relocsSzabolcs Nagy2016-07-031-1/+13
| | | | | add ilp32 related relocs and alternative names for a few macros following https://sourceware.org/ml/libc-alpha/2014-11/msg00455.html
* update elf.h with powerpc64 elfv2 abi related macrosSzabolcs Nagy2016-07-031-2/+8
| | | | | | see https://sourceware.org/ml/libc-alpha/2013-11/msg00315.html https://sourceware.org/ml/libc-alpha/2013-11/msg00314.html
* add new powerpc64 relocations to elf.hSzabolcs Nagy2016-07-031-0/+9
| | | | | following the corresponding binutils and glibc changes https://sourceware.org/ml/binutils/2013-10/msg00372.html
* add EM_OPENRISC again to elf.hSzabolcs Nagy2016-07-031-0/+1
| | | | | | | | | it was changed to EM_OR1K in 200d15479c0bc48471ee7b8e538ce33af990f82e as that was meant to be the official name, but glibc and the latest gabi spec still uses the EM_OPENRISC name: http://www.sco.com/developers/gabi/latest/ch4.eheader.html binutils defines both macros so we should do the same for backward compatibility.
* make brace placement in public header struct definitions consistentRich Felker2016-07-0324-92/+46
| | | | | | | | | | | | | | placing the opening brace on the same line as the struct keyword/tag is the style I prefer and seems to be the prevailing practice in more recent additions. these changes were generated by the command: find include/ arch/*/bits -name '*.h' \ -exec sed -i '/^struct [^;{]*$/{N;s/\n/ /;}' {} + and subsequently checked by hand to ensure that the regex did not pick up any false positives.
* fix misplaced indention in sys/procfs.hRich Felker2016-07-031-1/+1
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* pthread: implement try/timed join variantsBobby Bingham2016-06-301-0/+2
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* add RUSAGE_THREAD (Linux extension) definition to sys/resource.hRich Felker2016-06-291-0/+1
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* fix incorrect definition of RUSAGE_CHILDREN in sys/resource.hRich Felker2016-06-291-1/+1
| | | | | | the kernel ABI value for RUSAGE_CHILDREN is -1, not 1. the latter is actually interpreted as RUSAGE_THREAD, to obtain values for just the calling thread and not the whole process.
* avoid padding gaps in struct sockaddr_storageRich Felker2016-06-091-1/+1
| | | | | | | | | | | | | | | | | compilers are free not to copy, or in some cases to clobber, padding bytes in a structure. while it's an aliasing violation, and thus undefined behavior, to copy or manipulate other sockaddr types using sockaddr_storage, it seems likely that traditional code attempts to do so, and the original intent of the sockaddr_storage structure was probably to allow such usage. in the interest of avoiding silent and potentially dangerous breakage, ensure that there are no actual padding bytes in sockaddr_storage by moving and adjusting the size of the __ss_padding member so that it fits exactly. this change also removes a silent assumption that the alignment of long is equal to its size.
* update sys/socket.h to linux v4.6Szabolcs Nagy2016-06-091-1/+19
| | | | | | | | | | | | kernel connection multiplexor macros AF_KCM, PF_KCM, SOL_KCM were added in linux commit ab7ac4eb9832e32a09f4e8042705484d2fb0aad3 MSG_BATCH sendmsg flag for performance optimization was added in linux commit f092276d85b82504e8a07498f4e9e0c51f06745c SOL_* macros are now synced with linux socket.h which is not a uapi header and glibc did not have the macros either, but that has changed http://sourceware.org/ml/libc-alpha/2016-05/msg00322.html
* add new tcp_info fields from linux v4.6Szabolcs Nagy2016-06-091-0/+4
| | | | | | new fields and associated linux commit: tcpi_notsent_bytes, tcpi_min_rtt cd9b266095f422267bddbec88f9098b48ea548fc tcpi_data_segs_in, tcpi_data_segs_out a44d6eacdaf56f74fad699af7f4925a5f5ac0e7f
* add CLONE_NEWCGROUP clone flag, new in linux v4.6Szabolcs Nagy2016-06-091-0/+1
| | | | | flag for new cgroup namespace, added in linux commit 5e2bec7c2248ae27c5b16cd97215ae05c1d39179
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