GNU/Linux |
RedHat 9.0(Shrike) |
|
![]() |
initgroups(3) |
![]() |
initgroups − initialize the supplementary group access list
#include
<grp.h>
#include <sys/types.h>
int initgroups(const char *user, gid_t group);
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 initgroups() function returns 0 on success, or −1 if an error occurs.
EPERM |
The calling process does not have sufficient privileges. | ||
ENOMEM |
Insufficient memory to allocate group information structure. |
/etc/group group database file
SVID 3, BSD 4.3
The prototype for initgroups is only available if _BSD_SOURCE is defined (either explicitly, or implicitly, by not defining _POSIX_SOURCE or compiling with the -ansi flag).
getgroups(2), setgroups(2)
![]() |
initgroups(3) | ![]() |