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| author | Al Viro <viro@zeniv.linux.org.uk> | 2013-07-13 13:26:37 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-07-13 13:26:37 +0400 |
| commit | bb458c644a59dbba3a1fe59b27106c5e68e1c4bd (patch) | |
| tree | b0f3b51fc5cbd044b076cb0a1fec43ca62f2b7f5 /include | |
| parent | 4fbeb19d53cc3ef2da4bd1fd89a5dc9ac04add3a (diff) | |
| download | linux-0-day-bb458c644a59dbba3a1fe59b27106c5e68e1c4bd.tar.gz linux-0-day-bb458c644a59dbba3a1fe59b27106c5e68e1c4bd.tar.xz | |
Safer ABI for O_TMPFILE
[suggested by Rasmus Villemoes] make O_DIRECTORY | O_RDWR part of O_TMPFILE;
that will fail on old kernels in a lot more cases than what I came up with.
And make sure O_CREAT doesn't get there...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/asm-generic/fcntl.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/uapi/asm-generic/fcntl.h b/include/uapi/asm-generic/fcntl.h index 06632beaa6d51..05ac354e124de 100644 --- a/include/uapi/asm-generic/fcntl.h +++ b/include/uapi/asm-generic/fcntl.h @@ -84,10 +84,14 @@ #define O_PATH 010000000 #endif -#ifndef O_TMPFILE -#define O_TMPFILE 020000000 +#ifndef __O_TMPFILE +#define __O_TMPFILE 020000000 #endif +/* a horrid kludge trying to make sure that this will fail on old kernels */ +#define O_TMPFILE (__O_TMPFILE | O_DIRECTORY | O_RDWR) +#define O_TMPFILE_MASK (__O_TMPFILE | O_DIRECTORY | O_CREAT | O_ACCMODE) + #ifndef O_NDELAY #define O_NDELAY O_NONBLOCK #endif |