Name
initgroups — initialize the supplementary group
access list
Synopsis
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).
CONFORMING TO
SVr4, 4.3BSD
NOTES
The prototype for initgroups
() is only available if
_BSD_SOURCE
is defined.
SEE ALSO
getgroups(2), setgroups(2), credentials(7)
Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
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Formatted or processed versions of this manual, if unaccompanied by
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References consulted:
Linux libc source code
Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
386BSD man pages
Modified 1993-07-24 by Rik Faith <faith@cs.unc.edu>
Modified 2004-10-10 by aeb
|