INITGROUPS

Section: Linux Programmer's Manual (3)
Updated: 2004-10-10
Index Return to Main Contents
 

NAME

initgroups - initialize the supplementary group access list  

SYNOPSIS

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

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

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  

NOTES

The prototype for initgroups() is only available if _BSD_SOURCE is defined.  

SEE ALSO

getgroups(2), setgroups(2)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
FILES
CONFORMING TO
NOTES
SEE ALSO

linux.jgfs.net manual pages