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authorNicolas Cavallari <nicolas.cavallari@green-communications.fr>2021-04-07 19:08:23 +0200
committerWaldemar Brodkorb <wbx@openadk.org>2021-04-09 05:56:24 +0200
commit221f2898b9140b4cc103d2c485061023706c1fcf (patch)
tree89ecaeda872ea2074d05b5941e20575d0b9238e1 /libc/sysdeps/linux/common/open64.c
parent2bf4991c4dd7b50b74656011dea9c40464ff390c (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 'libc/sysdeps/linux/common/open64.c')
-rw-r--r--libc/sysdeps/linux/common/open64.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/common/open64.c b/libc/sysdeps/linux/common/open64.c
index 6e65a988e..9d4c06b18 100644
--- a/libc/sysdeps/linux/common/open64.c
+++ b/libc/sysdeps/linux/common/open64.c
@@ -10,13 +10,13 @@
#include <stdarg.h>
#include <cancel.h>
-/* Open FILE with access OFLAG. If OFLAG includes O_CREAT,
+/* Open FILE with access OFLAG. If OFLAG includes O_CREAT or O_TMPFILE,
a third argument is the file protection. */
int open64(const char *file, int oflag, ...)
{
mode_t mode = 0;
- if (oflag & O_CREAT) {
+ if (oflag & (O_CREAT | (O_TMPFILE &~ O_DIRECTORY))) {
va_list arg;
va_start (arg, oflag);
mode = va_arg (arg, mode_t);