return errno on failure, not just false

2 files changed, 17 insertions, 16 deletions

diff --git a/src/ios.rs b/src/ios.rs
index d510319..c353a79 100644
--- a/src/ios.rs
+++ b/src/ios.rs
@@ -27,20 +27,20 @@ extern mod c {
     fn set(t: *struct_termios);
 }
 
-pub fn cooked () -> bool {
-    unsafe { c::cooked() as bool }
+pub fn cooked () -> int {
+    unsafe { c::cooked() as int }
 }
 
-pub fn cbreak () -> bool {
-    unsafe { c::cbreak() as bool }
+pub fn cbreak () -> int {
+    unsafe { c::cbreak() as int }
 }
 
-pub fn raw () -> bool {
-    unsafe { c::raw() as bool }
+pub fn raw () -> int {
+    unsafe { c::raw() as int }
 }
 
-pub fn echo (enable: bool) -> bool {
-    unsafe { c::echo(enable as c_int) as bool }
+pub fn echo (enable: bool) -> int {
+    unsafe { c::echo(enable as c_int) as int }
 }
 
 pub fn preserve<T> (body: &fn () -> T) -> T {
diff --git a/src/termios_wrapper.c b/src/termios_wrapper.c
index 77d589b..a245322 100644
--- a/src/termios_wrapper.c
+++ b/src/termios_wrapper.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include <errno.h>
 #include <termios.h>
 
 /* very simplistic, ignores a lot of the settings that i don't understand,
@@ -9,13 +10,13 @@ int cooked()
     struct termios t;
 
     if (tcgetattr(0, &t) == -1) {
-        return 0;
+        return errno;
     }
 
     t.c_lflag |= (ICANON | ISIG | IEXTEN);
     t.c_iflag |= (IXON | BRKINT);
 
-    return tcsetattr(0, TCSANOW, &t) == 0;
+    return tcsetattr(0, TCSANOW, &t) == 0 ? 0 : errno;
 }
 
 int cbreak()
@@ -23,14 +24,14 @@ int cbreak()
     struct termios t;
 
     if (tcgetattr(0, &t) == -1) {
-        return 0;
+        return errno;
     }
 
     t.c_lflag |= ISIG;
     t.c_lflag &= ~(ICANON | IEXTEN);
     t.c_iflag |= (IXON | BRKINT);
 
-    return tcsetattr(0, TCSANOW, &t) == 0;
+    return tcsetattr(0, TCSANOW, &t) == 0 ? 0 : errno;
 }
 
 int raw()
@@ -38,13 +39,13 @@ int raw()
     struct termios t;
 
     if (tcgetattr(0, &t) == -1) {
-        return 0;
+        return errno;
     }
 
     t.c_lflag &= ~(ICANON | ISIG | IEXTEN);
     t.c_iflag &= ~(IXON | BRKINT);
 
-    return tcsetattr(0, TCSANOW, &t) == 0;
+    return tcsetattr(0, TCSANOW, &t) == 0 ? 0 : errno;
 }
 
 int echo(int enabled)
@@ -52,7 +53,7 @@ int echo(int enabled)
     struct termios t;
 
     if (tcgetattr(0, &t) == -1) {
-        return 0;
+        return errno;
     }
 
     if (enabled) {
@@ -62,7 +63,7 @@ int echo(int enabled)
         t.c_lflag &= ~ECHO;
     }
 
-    return tcsetattr(0, TCSANOW, &t) == 0;
+    return tcsetattr(0, TCSANOW, &t) == 0 ? 0 : errno;
 }
 
 struct termios *get()