NAME
setgroups —
set group access list
LIBRARY
library “libc”
SYNOPSIS
#include
<sys/param.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, 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() call will fail if:
- [
EPERM] - The caller is not the super-user.
- [
EFAULT] - The address specified for gidset is outside the process address space.
SEE ALSO
HISTORY
The setgroups() function call appeared in
4.2BSD.