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| author | Szabolcs Nagy <nsz@port70.net> | 2017-11-26 23:58:25 +0000 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2018-02-22 18:48:12 -0500 |
| commit | abdaba8616c29b0814a4dbe726224b6f2c9f8604 (patch) | |
| tree | 8bf71934fb4141cdd8e519621bd06544062119ef /include | |
| parent | fba3059d72e610944339ab139b01ea0c97d8f7c6 (diff) | |
| download | musl-abdaba8616c29b0814a4dbe726224b6f2c9f8604.tar.gz musl-abdaba8616c29b0814a4dbe726224b6f2c9f8604.tar.bz2 musl-abdaba8616c29b0814a4dbe726224b6f2c9f8604.tar.xz musl-abdaba8616c29b0814a4dbe726224b6f2c9f8604.zip | |
sys/{mman,shm}.h: add {MAP,SHM}_HUGE_ macros from linux uapi
*_HUGE_SHIFT, *_HUGE_2MB, *_HUGE_1GB are documented in the man page,
so add all of the *_HUGE_* macros from linux uapi.
if MAP_HUGETLB is set, top bits of the mmap flags encode the page size.
see the linux commit aafd4562dfee81a40ba21b5ea3cf5e06664bc7f6
if SHM_HUGETLB is set, top bits of the shmget flags encode the page size.
see the linux commit 4da243ac1cf6aeb30b7c555d56208982d66d6d33
*_HUGE_16GB is defined unsigned to avoid signed left shift ub.
Diffstat (limited to 'include')
| -rw-r--r-- | include/sys/mman.h | 13 | ||||
| -rw-r--r-- | include/sys/shm.h | 13 |
2 files changed, 26 insertions, 0 deletions
diff --git a/include/sys/mman.h b/include/sys/mman.h index 12318782..d13d4ca3 100644 --- a/include/sys/mman.h +++ b/include/sys/mman.h @@ -35,6 +35,19 @@ extern "C" { #define MAP_HUGETLB 0x40000 #define MAP_FILE 0 +#define MAP_HUGE_SHIFT 26 +#define MAP_HUGE_MASK 0x3f +#define MAP_HUGE_64KB (16 << 26) +#define MAP_HUGE_512KB (19 << 26) +#define MAP_HUGE_1MB (20 << 26) +#define MAP_HUGE_2MB (21 << 26) +#define MAP_HUGE_8MB (23 << 26) +#define MAP_HUGE_16MB (24 << 26) +#define MAP_HUGE_256MB (28 << 26) +#define MAP_HUGE_1GB (30 << 26) +#define MAP_HUGE_2GB (31 << 26) +#define MAP_HUGE_16GB (34U << 26) + #define PROT_NONE 0 #define PROT_READ 1 #define PROT_WRITE 2 diff --git a/include/sys/shm.h b/include/sys/shm.h index 67be822b..e7d39ff6 100644 --- a/include/sys/shm.h +++ b/include/sys/shm.h @@ -40,6 +40,19 @@ extern "C" { #define SHM_HUGETLB 04000 #define SHM_NORESERVE 010000 +#define SHM_HUGE_SHIFT 26 +#define SHM_HUGE_MASK 0x3f +#define SHM_HUGE_64KB (16 << 26) +#define SHM_HUGE_512KB (19 << 26) +#define SHM_HUGE_1MB (20 << 26) +#define SHM_HUGE_2MB (21 << 26) +#define SHM_HUGE_8MB (23 << 26) +#define SHM_HUGE_16MB (24 << 26) +#define SHM_HUGE_256MB (28 << 26) +#define SHM_HUGE_1GB (30 << 26) +#define SHM_HUGE_2GB (31 << 26) +#define SHM_HUGE_16GB (34U << 26) + typedef unsigned long shmatt_t; void *shmat(int, const void *, int); |