linux mkdir function can't authorize full permission
11,585
From man 2 mkdir
:
The argument mode specifies the permissions to use. It is modified by the process's umask in the usual way: the permissions of the created directory are (mode & ~umask & 0777).
I suggest you look at your umask - it is probably set to 0022
. Try a chmod
post-mkdir
.
Author by
manuzhang
Highly Available, Eventually Consistent, Partition Tolerant
Updated on June 05, 2022Comments
-
manuzhang almost 2 years
I am testing the
mkdir
function to create a new directory:folder = mkdir("./linux", 511);
or
folder = mkdir("./linux", 0777);
or
folder = mkdir("./linux", S_IRWXU | S_IRWXG | S_IRWXO);
As you can see, I try to authorize the full permission to the directory but here's what comes up with
ls -l | grep linux
:drwxr-xr-x 2 manuzhang manuzhang 4096 2012-01-04 06:53 linux
why can't I authorize write permission for group and others?
Updates:
weird thing, as you guys told me I triedumask
. It works with eitherumask(S_IWGRP)
orumask(S_IWOTH)
but fails withumask(S_IWGRP | S_IWOTH)
, any ideas? -
Aaron Campbell over 7 yearsCan we get a code example? Does this mean I can call
mkdir("dir", unmask(0777))
in order to create a directory with full permissions? Or that it's impossible to create a directory with full permissions?