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| author | Szabolcs Nagy <nsz@port70.net> | 2018-06-19 20:28:03 +0000 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2018-06-20 21:36:04 -0400 |
| commit | 38f2fa3d0207b8060302129c6464662751d4f2d3 (patch) | |
| tree | 72457eacc9c5ebb9c9f39120c9a87b26f031ccdb | |
| parent | b64d66d0b04fde0af63c3a292be423736294dca9 (diff) | |
| download | musl-38f2fa3d0207b8060302129c6464662751d4f2d3.tar.gz musl-38f2fa3d0207b8060302129c6464662751d4f2d3.tar.xz musl-38f2fa3d0207b8060302129c6464662751d4f2d3.zip | |
add memfd_create syscall wrapper
memfd_create was added in linux v3.17 and glibc has api for it.
| -rw-r--r-- | include/sys/mman.h | 5 | ||||
| -rw-r--r-- | src/linux/memfd_create.c | 8 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/sys/mman.h b/include/sys/mman.h index 80e1da75..99d02a2e 100644 --- a/include/sys/mman.h +++ b/include/sys/mman.h @@ -99,6 +99,10 @@ extern "C" { #define MREMAP_FIXED 2 #define MLOCK_ONFAULT 0x01 + +#define MFD_CLOEXEC 0x0001U +#define MFD_ALLOW_SEALING 0x0002U +#define MFD_HUGETLB 0x0004U #endif #include <bits/mman.h> @@ -119,6 +123,7 @@ int munlockall (void); #ifdef _GNU_SOURCE void *mremap (void *, size_t, size_t, int, ...); int remap_file_pages (void *, size_t, int, size_t, int); +int memfd_create (const char *, unsigned); int mlock2 (const void *, size_t, unsigned); #endif diff --git a/src/linux/memfd_create.c b/src/linux/memfd_create.c new file mode 100644 index 00000000..1649fe55 --- /dev/null +++ b/src/linux/memfd_create.c @@ -0,0 +1,8 @@ +#define _GNU_SOURCE 1 +#include <sys/mman.h> +#include "syscall.h" + +int memfd_create(const char *name, unsigned flags) +{ + return syscall(SYS_memfd_create, name, flags); +} |