diff options
| author | Nicolas Cavallari <nicolas.cavallari@green-communications.fr> | 2021-04-07 19:08:23 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbx@openadk.org> | 2021-04-09 05:56:24 +0200 |
| commit | 221f2898b9140b4cc103d2c485061023706c1fcf (patch) | |
| tree | 89ecaeda872ea2074d05b5941e20575d0b9238e1 /include/fcntl.h | |
| parent | 2bf4991c4dd7b50b74656011dea9c40464ff390c (diff) | |
open: Add support for O_TMPFILE
Since Linux 3.11, O_TMPFILE allows to create unnamed files that can be
linked later on. It is internally defined as (O_TMPFILE | O_DIRECTORY)
to make it fail on old kernels.
Copying definitions from glibc for O_TMPFILE is not enough to support
O_TMPFILE; The open() wrapper also need to pass the mode when the flag
contains O_TMPFILE, otherwise, it will pass mode 000 which will succeed
but yield unexpected results.
openat() is curiously not affected since it passes the mode
unconditionally..
Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Diffstat (limited to 'include/fcntl.h')
| -rw-r--r-- | include/fcntl.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/include/fcntl.h b/include/fcntl.h index 35797c689..136f64d70 100644 --- a/include/fcntl.h +++ b/include/fcntl.h @@ -104,8 +104,9 @@ libc_hidden_proto(fcntl64) #endif /* Open FILE and return a new file descriptor for it, or -1 on error. - OFLAG determines the type of access used. If O_CREAT is on OFLAG, - the third argument is taken as a `mode_t', the mode of the created file. + OFLAG determines the type of access used. If O_CREAT or O_TMPFILE + is on OFLAG, the third argument is taken as a `mode_t', the mode of + the created file. This function is a cancellation point and therefore not marked with __THROW. */ |