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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
* update siginfo struct for linux v4.6Szabolcs Nagy2016-06-091-6/+11
| | | | | x86 protection key faults are reported in the si_pkey field, added in linux commit cd0ea35ff5511cde299a61c21a95889b4a71464e
* add ETH_P_MACSEC netinet/if_ether.h, new in linux v4.6Szabolcs Nagy2016-06-091-0/+1
| | | | | ethertype for macsec added in linux commit dece8d2b78d19df7fe5e4e965f1f0d1a3e188d1b
* add SO_CNX_ADVICE to sys/socket.h, new in linux v4.6Szabolcs Nagy2016-06-091-0/+1
| | | | | | new socket option so application can give advice about routing path quality of connected udp sockets, added in linux commit a87cb3e48ee86d29868d3f59cfb9ce1a8fa63314
* fix undefined pointer arithmetic in CMSG_NXTHDR macroRich Felker2016-05-221-3/+3
| | | | | | | | previously, the only way the stopping condition could be met with correct lengths in the headers invoked undefined behavior, adding sizeof(struct cmsghdr) beyond the end of the cmsg buffer. instead, compute and compare sizes rather than pointers.
* add MADV_FREE madvise command from linux v4.5Szabolcs Nagy2016-03-191-0/+1
| | | | | | allows the os to free the marked pages lazily on memory pressure. expected to increase malloc performance. new in linux commit 854e9ed09dedf0c19ac8640e91bcc74bc3f9e5c9
* add EPOLLEXCLUSIVE epoll flag from linux v4.5Szabolcs Nagy2016-03-191-0/+1
| | | | | | new flag for exclusive wakeup mode when an event source fd is attached to multiple epoll fds but they should not all receive the events. new in linux commit df0108c5da561c66c333bb46bfe3c1fc65905898
* add SO_ATTACH_REUSEPORT_[CE]BPF socket options from linux v4.5Szabolcs Nagy2016-03-191-1/+2
| | | | | | new socket options for setting classic or extended BPF program for sockets in a SO_REUSEPORT group. added in linux commit 538950a1b7527a0a52ccd9337e3fcd304f027f13
* add IPV6_HDRINCL socket option from linux v4.5Szabolcs Nagy2016-03-191-0/+1
| | | | | new in linux commit 715f504b118998c41a2079a17e16bf5a8a114885 same as IP_HDRINCL but for SOL_IPV6 sockets.
* deduplicate bits/mman.hSzabolcs Nagy2016-03-181-0/+59
| | | | | | | | | | | currently five targets use the same mman.h constants and the rest share most constants too, so move them to sys/mman.h before the bits/mman.h include where the differences can be corrected by redefinition of the macros. this fixes two minor bugs: POSIX_MADV_DONTNEED was wrong on most targets (it should be the same as MADV_DONTNEED), and sh defined the x86-only MAP_32BIT mmap flag.
* add sched_getcpuNathan Zadoks2016-03-021-0/+1
| | | | | This is a GNU extension, but a fairly minor one, for a system call that otherwise has no libc wrapper.
* do not define static_assert macro for pre-C11 compilersRich Felker2016-02-121-1/+1
| | | | | | some software simply uses static_assert if the macro is defined, and this breaks if the compiler does not recognize the _Static_assert keyword used to define it.
* add declarations for utmpname/utmpxname to appropriate headersRich Felker2016-02-122-1/+2
| | | | | | | commit 378f8cb5222b63e4f8532c757ce54e4074567e1f added these functions (as stubs) but left them without declarations. this broke some autoconf based software that detected linkability of the symbols but didn't check for a declaration.
* fix siginfo_t for mipsSzabolcs Nagy2016-01-261-0/+4
| | | | | | | | si_errno and si_code are swapped in mips siginfo_t compared to other archs and some si_code values are different. This fix is required for POSIX timers to work. based on patch by Dmitry Ivanov.
* move bits/signal.h include close to the top of signal.hSzabolcs Nagy2016-01-261-6/+12
| | | | | | | | only have code above the bits/signal.h include that is necessary. (some types are used for the ucontext struct and mips has to override a few macro definitions) this way mips bits/signal.h will be able to affect siginfo_t.
* add new PTRACE_SECCOMP_GET_FILTER ptrace commandSzabolcs Nagy2016-01-261-0/+1
| | | | | allows the tracer to dump the bpf seccomp filters of the tracee, new in linux v4.4, commit f8e529ed941ba2bbcbf310b575d968159ce7e895
* add MCL_ONFAULT and MLOCK_ONFAULT mlockall and mlock2 flagsSzabolcs Nagy2016-01-261-0/+1
| | | | | | | | they lock faulted pages into memory (useful when a small part of a large mapped file needs efficient access), new in linux v4.4, commit b0f205c2a3082dd9081f9a94e50658c5fa906ff1 MLOCK_* is not in the POSIX reserved namespace for sys/mman.h
* add new PTRACE_O_SUSPEND_SECCOMP ptrace optionSzabolcs Nagy2016-01-261-1/+2
| | | | | | allows a ptracer process to disable/enable seccomp filters of the traced process, useful for checkpoint/restore, new in v4.3 commit 13c4a90119d28cfcb6b5bdd820c233b86c2b0237
* add new PR_CAP_AMBIENT and related defines to sys/prctl.hSzabolcs Nagy2016-01-261-0/+6
| | | | | ambient capability mask is new in linux v4.3, commit 58319057b7847667f0c9585b9de0e8932b0fdb08
* update netpacket/packet.h to linux v4.3Szabolcs Nagy2016-01-261-0/+17
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* add new IP_BIND_ADDRESS_NO_PORT and IPPROTO_MPLS to netinet/in.hSzabolcs Nagy2016-01-241-0/+2
| | | | | | | | | IP_BIND_ADDRESS_NO_PORT is a SOL_IP socket option to delay src port allocation until connect in case src ip is set with bind(port=0). new in linux v4.2, commit 90c337da1524863838658078ec34241f45d8394d IPPROTO_MPLS protocol number for mpls over ip. new in linux v4.2, commit 730fc4371333636a00fed32c587fc1e85c5367e2
* update netinet/tcp.h for linux v4.2Szabolcs Nagy2016-01-241-0/+7
| | | | | | | | | | | | | TCP_CC_INFO is a new socket option to get congestion control info without netlink (union tcp_cc_info is in linux/inet_diag.h kernel header). linux commit 6e9250f59ef9efb932c84850cd221f22c2a03c4a TCP_SAVE_SYN, TCP_SAVED_SYN socket options are for saving and getting the SYN headers of passive connections in a server application. linux commit cd8ae85299d54155702a56811b2e035e63064d3d Add new tcpi_* fields to struct tcp_info implementing RFC4898 counters. linux commit 2efd055c53c06b7e89c167c98069bab9afce7e59
* add MS_LAZYTIME mount option to sys/mount.hSzabolcs Nagy2016-01-241-1/+2
| | | | | new in linux 4.0 commit 0ae45f63d4ef8d8eeec49c7d8b44a1775fff13e8, used to update atime/mtime/ctime only in memory when possible.
* add AF_MPLS (PF_MPLS) address family to socket.hSzabolcs Nagy2016-01-241-0/+2
| | | | new in linux 4.0 commit 0189197f441602acdca3f97750d392a895b778fd.
* add MSG_FASTOPEN sendmsg/sendto flag to socket.hSzabolcs Nagy2016-01-241-0/+1
| | | | | This was new in linux 3.5 in commit cf60af03ca4e71134206809ea892e49b92a88896, needed for tcp fastopen feature (sending data in TCP SYN packet).
* netinet/tcp: Add TCPOPT, TCPOLEN constantsKylie McClain2016-01-171-0/+13
| | | | | | | | | Programs such as iptables depend on these constants, which can also be found defined in other libcs. Since only TCP_* is reserved as part of tcp.h's namespace, we hide them behind _BSD_SOURCE (and therefore _DEFAULT_SOURCE) to expose them by default, but keep it standard conforming.
* fix mismatched parens in CMPLX def for annex-g-conforming compilersRich Felker2015-11-021-1/+1
| | | | | this conditional path was never tested because there are no compilers that conform to annex g (none with _Imaginary_I).
* remove attribute((const)) from pthread_self and errno location declsRich Felker2015-09-173-9/+0
| | | | | | | | | | | | | | | | | | | | | | this attribute was applied to pthread_self and the functions providing the locations for errno and h_errno as an optimization; however, it is subtly incorrect. as specified, it means the return value will always be the same, which is not true; it varies per-thread. this attribute also implies that the function does not depend on any state, and that calls to it can safely be reordered across any other code. however such reordering is unsafe for these functions: they break when reordered before initialization of the thread pointer. such breakage was actually observed when compiled by libfirm/cparser. to some extent the reordering problem could be solved with strong compiler barriers between the stages of early startup code, but the specified meaning of of attribute((const)) is sufficiently strong that a compiler would theoretically be justified inserting gratuitous calls to attribute((const)) const functions at random locations (e.g. to save the value in static storage for later use). this reverts commit cbf35978a9870fb1f5c73a852c986d4fcca6c2d4.
* add format argument attributes to gettext function prototypesKhem Raj2015-09-151-6/+14
| | | | | | | | | | their absence completely breaks format string warnings in programs with gettext message translations: -Wformat gives no results, and -Wformat-nonliteral produces spurious warnings. with gcc, the problem manifests only in standards-conforming profiles; otherwise gcc sets these attributes by default for the gettext family. with clang, the problem always manifests; clang has no such defaults.
* add sh relocation types needed for fdpic to elf.hRich Felker2015-09-121-0/+8
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* socket.h: fix SO_* for mipsRoman Yeryomin2015-07-211-3/+3
| | | | Signed-off-by: Roman Yeryomin <roman@ubnt.com>
* fix incorrect void return type for syncfs functionRich Felker2015-07-091-1/+1
| | | | | | being nonstandard, the closest thing to a specification for this function is its man page, which documents it as returning int. it can fail with EBADF if the file descriptor passed is invalid.
* byte-based C locale, phase 3: make MB_CUR_MAX variable to activate codeRich Felker2015-06-161-1/+2
| | | | | | | | this patch activates the new byte-based C locale (high bytes treated as abstract code unit "characters" rather than decoded as multibyte characters) by making the value of MB_CUR_MAX depend on the active locale. for the C locale, the LC_CTYPE category pointer is null, yielding a value of 1. all other locales yield a value of 4.
* add macro version of ctype.h isascii functionRich Felker2015-06-061-0/+1
| | | | | | presumably internal code (ungetwc and fputwc) was written assuming a macro implementation existed; otherwise use of isascii is just a pessimization.
* add missing legacy LFS64 macros in sys/resource.hRich Felker2015-05-281-0/+3
| | | | | based on patch by Felix Janda, with RLIM64_SAVED_CUR and RLIM64_SAVED_MAX added for completeness.
* fix netinet/ether.h for c++Szabolcs Nagy2015-05-081-0/+8
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* improve iswdigit macro to diagnose errorsRich Felker2015-05-022-2/+2
| | | | | this is analogous to commit 2ca55a93f2a11185d72dcb69006fd2c30b5c3144 for the macros in ctype.h.
* add IPTOS_CLASS_* macros to netinet/ip.hSzabolcs Nagy2015-05-011-0/+12
| | | | | These macros were introduced in glibc 2.12 to follow RFC 2474 which deprecates "IP Precedence" in favor of "Class Selector Codepoints".
* fix integer overflow in elf.h macro SHF_EXCLUDERich Felker2015-05-011-1/+1
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* add PR_*_FP_MODE prctl optionsSzabolcs Nagy2015-04-171-0/+5
| | | | | new in linux v4.0, commit 9791554b45a2acc28247f66a5fd5bbc212a6b8c8 used to work around a floating-point abi issue on mips
* add PR_MPX_*_MANAGEMENT prctl optionsSzabolcs Nagy2015-04-171-0/+3
| | | | | new in linux v3.19, commit fe3d197f84319d3bce379a9c0dc17b1f48ad358c used for on-demand kernel allocation of bounds tables for mpx on x86
* add IP_CHECKSUM socket option to netinet/in.hSzabolcs Nagy2015-04-171-0/+1
| | | | new in linux v4.0, commit ad6f939ab193750cc94a265f58e007fb598c97b7
* improve ctype.h macros to diagnose errorsRich Felker2015-04-171-6/+6
| | | | | | | | the casts of the argument to unsigned int suppressed diagnosis of errors like passing a pointer instead of a character. putting the actual function call in an unreachable branch restores any diagnostics that would be present if the macros didn't exist and functions were used.
* remove macro definition of longjmp from setjmp.hRich Felker2015-04-011-1/+0
| | | | | | | the C standard specifies that setjmp is a macro, but longjmp is a normal function. a macro version of it would be permitted (albeit useless) for C (not C++), but would have to be a function-like macro, not an object-like one.
* move O_PATH definition back to arch bitsRich Felker2015-04-011-3/+2
| | | | | | | while it's the same for all presently supported archs, it differs at least on sparc, and conceptually it's no less arch-specific than the other O_* macros. O_SEARCH and O_EXEC are still defined in terms of O_PATH in the main fcntl.h.
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