setgroups2
Set group access list
Usage
#include <sys/param.h>
#include <unistd.h>
int
setgroups(int ngroups, const gid_t *gidset);
Overview
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 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.
Releases
155 releases since Mac OS X 10.0; the text changed 2 times.