NAME
setgroups —
set group access list
SYNOPSIS
#include
<sys/types.h>
#include <unistd.h>
int
setgroups(int
ngroups, const gid_t
*gidset);
DESCRIPTION
setgroups()
sets the group access list of the current user process according to the
array gidset. The parameter
ngroups indicates the number of entries in the array
and must be no more than {NGROUPS_MAX}.
Only the superuser may set new groups.
RETURN VALUES
Upon successful completion, the value 0 is returned; otherwise the value -1 is returned and the global variable errno is set to indicate the error.
ERRORS
The setgroups() call will fail if:
- [
EINVAL] - The value of ngroups is greater than
{NGROUPS_MAX}. - [
EPERM] - The caller is not the superuser.
- [
EFAULT] - The address specified for gidset is outside the process address space.
SEE ALSO
HISTORY
The setgroups() system call first appeared
in 4.1cBSD.