Name
initgroups -- initialize the supplementary group access list
Synopsis
#include <grp.h>
#include <sys/types.h>
int initgroups(const char *user, gid_t group); |
Description
The initgroups() function initializes the group access list by reading
the group database and using all groups of which user is a member. The
additional group group is also added to the list.
Return Value
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
Errors
- EPERM
The calling process does not have sufficient privileges.
- ENOMEM
Insufficient memory to allocate group information structure.