table of contents
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¶
COLOPHON¶
This page is part of release 3.53 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/.
2007-07-26 | GNU |