SETGROUPS(2) BSD System Calls Manual SETGROUPS(2)NAMEsetgroups — set group access list
SYNOPSIS
#include <sys/param.h>
#include <unistd.h>
int
setgroups(int ngroups, const gid_t *gidset);
DESCRIPTIONSetgroups() sets the group access list of the current user process
according to the array gidset. The parameter ngroups indicates the num‐
ber of entries in the array and must be no more than {NGROUPS_MAX}.
Only the super-user may set new groups.
Use of setgroups() is highly discouraged.
RETURN VALUES
A 0 value is returned on success, -1 on error, with an error code stored
in errno.
ERRORS
The setgroups() call will fail if:
[EINVAL] The value of ngroups is greater than {NGROUPS_MAX}.
[EPERM] The caller is not the super-user.
[EFAULT] The address specified for gidset is outside the
process address space.
SEE ALSOgetgroups(2), initgroups(3)HISTORY
The setgroups() function call appeared in 4.2BSD.
4.2 Berkeley Distribution September 15, 2010 4.2 Berkeley Distribution