GETGROUPS
Section: System Calls (2)
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BSD mandoc
BSD 4.2
NAME
getgroups
- get group access list
SYNOPSIS
Fd #include <sys/param.h>
Fd #include <sys/types.h>
Fd #include <unistd.h>
Ft int
Fn getgroups int gidsetlen gid_t *gidset
DESCRIPTION
Fn Getgroups
gets the current group access list of the current user process
and stores it in the array
Fa gidset .
The parameter
Fa gidsetlen
indicates the number of entries that may be placed in
Fa gidset .
Fn Getgroups
returns the actual number of groups returned in
Fa gidset .
No more than
{NGROUPS_MAX}
will ever
be returned.
If
Fa gidsetlen
is 0,
Fn getgroups
returns the number of groups without modifying the
Fa gidset
array.
RETURN VALUES
A successful call returns the number of groups in the group set.
A value of -1 indicates that an error occurred, and the error
code is stored in the global variable
errno
ERRORS
The possible errors for
Fn getgroups
are:
- Bq Er EINVAL
-
The argument
Fa gidsetlen
is smaller than the number of groups in the group set.
- Bq Er EFAULT
-
The argument
Fa gidset
specifies
an invalid address.
SEE ALSO
setgroups(2),
initgroups(3)
HISTORY
The
Fn getgroups
function call appeared in
BSD 4.2
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUES
-
- ERRORS
-
- SEE ALSO
-
- HISTORY
-
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Time: 16:28:59 GMT, April 18, 2022