setgroups -- set group access list
Standard C Library (libc, -lc)
#include <sys/param.h>
#include <unistd.h>
int
setgroups(int ngroups, const gid_t *gidset);
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.
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.
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.
getgroups(2), initgroups(3)
The setgroups() system call appeared in 4.2BSD.
FreeBSD 5.2.1 April 16, 1994 FreeBSD 5.2.1 [ Back ] |