HelenOS sources

gid_t              46 uspace/lib/posix/include/posix/pwd.h 	gid_t pw_gid;
gid_t              89 uspace/lib/posix/include/posix/sys/stat.h 	gid_t     st_gid;     /* group ID of owner */
gid_t              88 uspace/lib/posix/include/posix/unistd.h extern gid_t getgid(void);
gid_t             187 uspace/lib/posix/src/unistd.c gid_t getgid(void)