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| author | Florian Weimer <fweimer@redhat.com> | 2017-11-23 10:00:40 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2017-11-23 10:00:40 +0100 |
| commit | 59d2cbb1fe4b8601d5cbd359c3806973eab6c62d (patch) | |
| tree | b0dc954009b8a65f9091d88e471db3476da7b2ad /ChangeLog | |
| parent | 0a9d1d62b36cc46bf893ce404013a7b2d0bcfce8 (diff) | |
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Linux: Add memfd_create system call wrapper
The system call is somewhat obscure because it is closely related
to file descriptor sealing. However, it is also the recommended
way to create alias mappings, which is why it has more general use.
No emulation is provided. Except for the name of the
/proc/self/fd links, it would be possible to implement an
approximation using O_TMPFILE and tmpfs, but this does not appear
to be worth the added complexity.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Reviewed-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 14 |
1 files changed, 14 insertions, 0 deletions
@@ -1,3 +1,17 @@ +2017-11-23 Florian Weimer <fweimer@redhat.com> + + Linux: Add memfd_create system call wrapper + * sysdeps/unix/sysv/linux/Makefile [misc] (tests): Add + tst-memfd_create. + * sysdeps/unix/sysv/linux/bits/mman-linux.h [__USE_GNU] + (MFD_CLOEXEC, MFD_ALLOW_SEALING): Define. + [__USE_GNU] (memfd_create): Declare. + * sysdeps/unix/sysv/linux/Versions (GLIBC_2.27): Add memfd_create. + * sysdeps/unix/sysv/linux/syscalls.list (memfd_create): Add. + * sysdeps/unix/sysv/linux/tst-memfd_create.c: New file. + * sysdeps/unix/sysv/linux/**.abilist: Update. + * manual/llio.texi (Memory-mapped I/O): Document memfd_create. + 2017-11-22 Joseph Myers <joseph@codesourcery.com> * localedata/gen-locale.sh: Fix typo in variable name. |