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fcntl.h: add F_SEAL_FUTURE_WRITE from linux v5.1

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needed for android so it can migrate from its ashmem to memfd.
allows making the memfd readonly for future users while keeping
a writable mmap of it. see

  linux commit ab3948f58ff841e51feb845720624665ef5b7ef3
  mm/memfd: add an F_SEAL_FUTURE_WRITE seal to memfd
This commit is contained in:
Szabolcs Nagy 2019-05-09 18:51:53 +00:00 committed by Rich Felker
parent f67b3c1799
commit 9e8dd1c7f1
1 changed files with 1 additions and 0 deletions
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include/fcntl.h
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@ -129,6 +129,7 @@ int posix_fallocate(int, off_t, off_t);
#define F_SEAL_SHRINK 0x0002
#define F_SEAL_GROW 0x0004
#define F_SEAL_WRITE 0x0008
#define F_SEAL_FUTURE_WRITE 0x0010
#define F_GET_RW_HINT 1035
#define F_SET_RW_HINT 1036