INITGROUPS(3) | Library Functions Manual | INITGROUPS(3) |
initgroups
—
#include <unistd.h>
int
initgroups
(const
char *name, gid_t
basegid);
initgroups
() function uses the
getgrouplist(3) function
to calculate the supplementary group IDs for the user specified in
name. This group list is then set up for the current
process using setgroups(2).
The basegid is automatically included in the group list.
Typically this value is given as the group number from the password file.
If the groups database lists more than
NGROUPS
groups for name
(including one for basegid), the later groups are
ignored.
initgroups
() function returns -1 if it was not
invoked by the super-user.
initgroups
() function appeared in
4.2BSD.
getgrouplist
() function called by
initgroups
() uses the routines based on
getgrent(3). If the invoking
program uses any of these routines, the group structure will be overwritten in
the call to initgroups
().
August 10, 2002 | NetBSD 9.0 |