fs: implement access(), mkstemp(), file.flush() and proc.flush()

The `access()` function allows testing the path given in the first argument
 for accessibility according to the permissions specified in the second
mode string argument. The mode string characters may be `r`, `w`, `x` or
`f` which correspond to `R_OK` - path is readable, `W_OK` - path is
writable, `X_OK` - path is executable or `F_OK` - path exists respectively.

The `mkstemp()` function creates a secure temporary file, unlinks it and
returns the open file handle. The temporary path is constructed based on
the optional template argument. If the template argument contains a slash,
the path is taken as-is, if it contains no slashes, `/tmp/` is prepended.
If the template does not end with `XXXXXX`, a `.XXXXXX` suffix is appended
to the path. If the template is omitted, `/tmp/XXXXXX` is used.

The `file.flush()` and `proc.flush()` functions call `fflush()` on the
underlying file handle respectively. They take no arguments.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

0 files changed, 0 insertions, 0 deletions