SETGROUPS(2) MidnightBSD System Calls Manual SETGROUPS(2)

NAME

setgroups — set group access list

LIBRARY

Standard C Library (libc, −lc)

SYNOPSIS

#include <sys/param.h>
#include <unistd.h>

int

setgroups(int ngroups, const gid_t *gidset);

DESCRIPTION

The setgroups() system call sets the group access list of the current user process according to the array gidset. The ngroups argument indicates the number of entries in the array and must be no more than NGROUPS, as defined in <sys/param.h>.

Only the super-user may set new groups.

RETURN VALUES

The setgroups() function returns the value 0 if successful; otherwise the value −1 is returned and the global variable errno is set to indicate the error.

ERRORS

The setgroups() system call will fail if:

[EPERM]

The caller is not the super-user.

[EINVAL]

The number specified in the ngroups argument is larger than the NGROUPS limit.

[EFAULT]

The address specified for gidset is outside the process address space.

SEE ALSO

getgroups(2), initgroups(3)

HISTORY

The setgroups() system call appeared in 4.2BSD.

MidnightBSD 0.3 April 16, 1994 MidnightBSD 0.3