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* 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
* 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 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
* move MREMAP_MAYMOVE and MREMAP_FIXED out of bitsTrutz Behn2015-01-301-0/+2
| | | | | | the definitions are generic for all kernel archs. exposure of these macros now only occurs on the same feature test as for the function accepting them, which is believed to be more correct.
* fix signedness of pgoff argument to remap_file_pagesRich Felker2014-01-071-1/+1
| | | | | both the kernel and glibc agree that this argument is unsigned; the incorrect type ssize_t came from erroneous man pages.
* add clock_adjtime, remap_file_pages, and syncfs syscall wrappersRich Felker2012-09-161-0/+5
| | | | patch by Justin Cormack, with slight modification
* mincore syscall wrapperRich Felker2012-09-091-0/+1
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* default features: make musl usable without feature test macrosRich Felker2012-09-071-0/+2
| | | | | | | | | | the old behavior of exposing nothing except plain ISO C can be obtained by defining __STRICT_ANSI__ or using a compiler option (such as -std=c99) that predefines it. the new default featureset is POSIX with XSI plus _BSD_SOURCE. any explicit feature test macros will inhibit the default. installation docs have also been updated to reflect this change.
* _GNU_SOURCE is supposed to imply _LARGEFILE64_SOURCERich Felker2012-06-041-1/+1
| | | | | | | | | this is ugly and stupid, but now that the *64 symbol names exist, a lot of broken GNU software detects them in configure, then either breaks during build due to missing off64_t definition, or attempts to compile without function declarations/prototypes. "fixing" it here is easier than telling everyone to add yet another feature test macro to their builds.
* support _BSD_SOURCE feature test macroRich Felker2012-05-221-0/+3
| | | | | patch by Isaac Dunham. matched closely (maybe not exact) to glibc's idea of what _BSD_SOURCE should make visible.
* add *64 junk for sys/*.h headersRich Felker2012-05-041-0/+5
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* namespace cleanup in sys/mman.hRich Felker2011-03-031-1/+3
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+37
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