ref: 7359de438cfaac829c4ed8b39fae9bb872fb5eea
dir: /sys/src/cmd/ext4srv/group.h/
typedef struct Group Group; typedef struct Groups Groups; struct Group { u32int id; char *name; Group *memb; int nmemb; }; struct Groups { char *raw; Group *g; int ng; }; int loadgroups(Groups *gs, char *raw); void freegroups(Groups *gs); Group *findgroup(Groups *gs, char *name, u32int *id); Group *findgroupid(Groups *gs, u32int id); int ingroup(Group *g, u32int id);