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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 |
getgroups(2), setgroups(2) |