From ac6ec1c88e0b3a439703777508cd254bbacb818c Mon Sep 17 00:00:00 2001
From: Alexander Batischev <eual.jp@gmail.com>
Date: Sun, 17 Jan 2021 22:43:33 +0300
Subject: [PATCH] Add bindings for iconv calls

---
 libc-test/build.rs | 12 +++++++++++-
 src/unix/mod.rs    | 14 ++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/libc-test/build.rs b/libc-test/build.rs
index ccbef16c5cd13..031a1f6e87f3d 100755
--- a/libc-test/build.rs
+++ b/libc-test/build.rs
@@ -106,6 +106,7 @@ fn test_apple(target: &str) {
         "fcntl.h",
         "glob.h",
         "grp.h",
+        "iconv.h",
         "ifaddrs.h",
         "langinfo.h",
         "limits.h",
@@ -356,6 +357,7 @@ fn test_openbsd(target: &str) {
         "pthread_np.h",
         "sys/syscall.h",
         "sys/shm.h",
+        "iconv.h",
     }
 
     cfg.skip_struct(move |ty| {
@@ -554,6 +556,7 @@ fn test_redox(target: &str) {
         "errno.h",
         "fcntl.h",
         "grp.h",
+        "iconv.h",
         "limits.h",
         "locale.h",
         "netdb.h",
@@ -614,6 +617,7 @@ fn test_solarish(target: &str) {
         "fcntl.h",
         "glob.h",
         "grp.h",
+        "iconv.h",
         "ifaddrs.h",
         "langinfo.h",
         "limits.h",
@@ -889,6 +893,7 @@ fn test_netbsd(target: &str) {
         "sys/event.h",
         "sys/quota.h",
         "sys/shm.h",
+        "iconv.h",
     }
 
     cfg.type_name(move |ty, is_struct, is_union| {
@@ -1096,6 +1101,7 @@ fn test_dragonflybsd(target: &str) {
         "utime.h",
         "utmpx.h",
         "wchar.h",
+        "iconv.h",
     }
 
     cfg.type_name(move |ty, is_struct, is_union| {
@@ -1325,6 +1331,7 @@ fn test_android(target: &str) {
                "errno.h",
                "fcntl.h",
                "grp.h",
+               "iconv.h",
                "ifaddrs.h",
                "limits.h",
                "locale.h",
@@ -1377,8 +1384,8 @@ fn test_android(target: &str) {
                "sys/syscall.h",
                "sys/sysinfo.h",
                "sys/time.h",
-               "sys/times.h",
                "sys/timerfd.h",
+               "sys/times.h",
                "sys/types.h",
                "sys/ucontext.h",
                "sys/uio.h",
@@ -1600,6 +1607,7 @@ fn test_freebsd(target: &str) {
                 "fcntl.h",
                 "glob.h",
                 "grp.h",
+                "iconv.h",
                 "ifaddrs.h",
                 "langinfo.h",
                 "libutil.h",
@@ -1906,6 +1914,7 @@ fn test_emscripten(target: &str) {
                "fcntl.h",
                "glob.h",
                "grp.h",
+               "iconv.h",
                "ifaddrs.h",
                "langinfo.h",
                "limits.h",
@@ -2270,6 +2279,7 @@ fn test_linux(target: &str) {
                "fcntl.h",
                "glob.h",
                "grp.h",
+               "iconv.h",
                "ifaddrs.h",
                "langinfo.h",
                "limits.h",
diff --git a/src/unix/mod.rs b/src/unix/mod.rs
index 9db5a747d22dd..e1ad78fb96175 100644
--- a/src/unix/mod.rs
+++ b/src/unix/mod.rs
@@ -39,6 +39,7 @@ impl ::Clone for DIR {
     }
 }
 pub type locale_t = *mut ::c_void;
+pub type iconv_t = *mut ::c_void;
 
 s! {
     pub struct group {
@@ -1542,6 +1543,19 @@ extern "C" {
         cmd: ::c_int,
         len: ::off_t,
     ) -> ::c_int;
+
+    pub fn iconv_open(
+        tocode: *const ::c_char,
+        fromcode: *const ::c_char,
+    ) -> iconv_t;
+    pub fn iconv(
+        cd: iconv_t,
+        inbuf: *mut *mut ::c_char,
+        inbytesleft: *mut ::size_t,
+        outbuf: *mut *mut ::c_char,
+        outbytesleft: *mut ::size_t,
+    ) -> ::size_t;
+    pub fn iconv_close(cd: iconv_t) -> ::c_int;
 }
 
 cfg_if! {