Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

FreeBSD 11.0 - man page for initgroups (freebsd section 3)

INITGROUPS(3)						   BSD Library Functions Manual 					     INITGROUPS(3)

NAME
initgroups -- initialize group access list
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <unistd.h> int initgroups(const char *name, gid_t basegid);
DESCRIPTION
The initgroups() function uses the getgrouplist(3) function to calculate the group access list for the user specified in name. This group list is then setup for the current process using setgroups(2). The basegid is automatically included in the groups list. Typically this value is given as the group number from the password file.
RETURN VALUES
The initgroups() function returns the value 0 if successful; otherwise the value -1 is returned and the global variable errno is set to indi- cate the error.
ERRORS
The initgroups() function may fail and set errno for any of the errors specified for the library function setgroups(2). It may also return: [ENOMEM] The initgroups() function was unable to allocate temporary storage.
SEE ALSO
setgroups(2), getgrouplist(3)
HISTORY
The initgroups() function appeared in 4.2BSD.
BSD
October 26, 2014 BSD