3 element {struct passwd} {char*} pw_name
4 element {struct passwd} uid_t pw_uid
5 element {struct passwd} gid_t pw_gid
6 element {struct passwd} {char*} pw_dir
7 element {struct passwd} {char*} pw_shell
14 function {struct passwd*} getpwnam (const char*)
15 function {struct passwd*} getpwuid (uid_t)
16 function int getpwnam_r (const char*, struct passwd*, char*, size_t, struct passwd**)
17 function int getpwuid_r (uid_t, struct passwd*, char*, size_t, struct passwd**)
18 function void endpwent (void)
19 function {struct passwd*} getpwent (void)
20 funciton void setpwent (void)