Auto merge of #3015 - devnexen:android_pwent, r=JohnTitor

adding a handful of get/set*ent calls for android.

close #3014

Author: bors

libc-test/semver/android.txt

@@ -2915,6 +2915,7 @@ dlsym
 dup
 dup2
 duplocale
+endgrent
 endservent
 epoll_create
 epoll_create1
@@ -3014,6 +3015,7 @@ getegid
 getenv
 geteuid
 getgid
+getgrent
 getgrgid
 getgrgid_r
 getgrnam
@@ -3036,6 +3038,7 @@ getprotobyname
 getprotobynumber
 getpwnam
 getpwnam_r
+getpwent
 getpwuid
 getpwuid_r
 getresgid
@@ -3400,13 +3403,15 @@ seteuid
 setfsgid
 setfsuid
 setgid
+setgrent
 setgroups
 sethostname
 setlocale
 setlogmask
 setns
 setpgid
 setpriority
+setpwent
 setregid
 setresgid
 setresuid
@@ -3594,4 +3599,4 @@ wmemchr
 write
 writev
 dirname
-basename
+basename

src/unix/linux_like/android/mod.rs

@@ -3052,6 +3052,13 @@ safe_f! {
 }
 
 extern "C" {
+    pub fn setpwent();
+    pub fn endpwent();
+    pub fn getpwent() -> *mut passwd;
+    pub fn setgrent();
+    pub fn endgrent();
+    pub fn getgrent() -> *mut ::group;
+
     pub fn getrlimit64(resource: ::c_int, rlim: *mut rlimit64) -> ::c_int;
     pub fn setrlimit64(resource: ::c_int, rlim: *const rlimit64) -> ::c_int;
     pub fn getrlimit(resource: ::c_int, rlim: *mut ::rlimit) -> ::c_int;