INITGROUPS(3) Linux Programmer's Manual INITGROUPS(3)NAMEinitgroups - initialize the supplementary group access list
int initgroups(const char *user, gid_t group);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
The initgroups() function initializes the group access list by reading
the group database /etc/group and using all groups of which user is a
member. The additional group group is also added to the list.
The user argument must be non-NULL.
The initgroups() function returns 0 on success. On error, -1 is
returned, and errno is set appropriately.
ENOMEM Insufficient memory to allocate group information structure.
EPERM The calling process has insufficient privilege. See the under‐
lying system call setgroups(2).
/etc/group group database file
SEE ALSOgetgroups(2), setgroups(2), credentials(7)COLOPHON
This page is part of release 3.65 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2007-07-26 INITGROUPS(3)