initgroups(3) [bsd man page]

INITGROUPS(3)						     Library Functions Manual						     INITGROUPS(3)

NAME

       initgroups - initialize group access list

SYNOPSIS

       initgroups(name, basegid)
       char *name;
       int basegid;

DESCRIPTION

       Initgroups  reads  through  the	group file and sets up, using the setgroups(2) call, the group access list for the user specified in name.
       The basegid is automatically included in the groups list.  Typically this value is given as the group number from the password file.

FILES

       /etc/group

SEE ALSO

       setgroups(2)

DIAGNOSTICS

       Initgroups returns -1 if it was not invoked by the super-user.

BUGS

       Initgroups uses the routines based on getgrent(3).  If the invoking program uses any of these routines, the group structure will  be  over-
       written in the call to initgroups.

4.2 Berkeley Distribution					   May 12, 1986 						     INITGROUPS(3)

INITGROUPS(3)						     Linux Programmer's Manual						     INITGROUPS(3)

NAME

       initgroups - initialize the supplementary group access list

SYNOPSIS

       #include <sys/types.h>
       #include <grp.h>

       int initgroups(const char *user, gid_t group);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       initgroups(): _BSD_SOURCE

DESCRIPTION

       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.

RETURN VALUE

       The initgroups() function returns 0 on success.	On error, -1 is returned, and errno is set appropriately.

ERRORS

       ENOMEM Insufficient memory to allocate group information structure.

       EPERM  The calling process has insufficient privilege.  See the underlying system call setgroups(2).

FILES

       /etc/group	   group database file

CONFORMING TO

       SVr4, 4.3BSD.

SEE ALSO

       getgroups(2), setgroups(2), credentials(7)

COLOPHON

       This page is part of release 3.27 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)