From cdf5c70d5b56aad58968792e29f2167a0e921e84 Mon Sep 17 00:00:00 2001
From: Agoston Szepessy <agoston.the.dev@gmail.com>
Date: Wed, 24 Jul 2024 21:34:50 +0200
Subject: [PATCH] Implement ctermid()
---
src/header/stdio/constants.rs | 2 ++
src/header/stdio/mod.rs | 12 +++++++++---
tests/Makefile | 1 +
tests/stdio/ctermid.c | 22 ++++++++++++++++++++++
4 files changed, 34 insertions(+), 3 deletions(-)
create mode 100644 tests/stdio/ctermid.c
diff --git a/src/header/stdio/constants.rs b/src/header/stdio/constants.rs
index 0d4346d9..4c3e32ae 100644
--- a/src/header/stdio/constants.rs
+++ b/src/header/stdio/constants.rs
@@ -24,6 +24,8 @@ pub const _IOFBF: c_int = 0;
pub const _IOLBF: c_int = 1;
pub const _IONBF: c_int = 2;
+// /dev/tty + nul
+pub const L_ctermid: usize = 9;
// form of name is /XXXXXX, so 7
pub const L_tmpnam: c_int = 7;
// 36^6 (26 letters + 10 digits) is larger than i32::MAX, so just set to that
diff --git a/src/header/stdio/mod.rs b/src/header/stdio/mod.rs
index a79f19a2..2a08a797 100644
--- a/src/header/stdio/mod.rs
+++ b/src/header/stdio/mod.rs
@@ -278,9 +278,15 @@ pub unsafe extern "C" fn clearerr(stream: *mut FILE) {
stream.flags &= !(F_EOF | F_ERR);
}
-// #[no_mangle]
-pub extern "C" fn ctermid(_s: *mut c_char) -> *mut c_char {
- unimplemented!();
+#[no_mangle]
+pub unsafe extern "C" fn ctermid(s: *mut c_char) -> *mut c_char {
+ static mut TERMID: [u8; L_ctermid] = *b"/dev/tty\0";
+
+ if s.is_null() {
+ return TERMID.as_mut_ptr() as *mut c_char;
+ }
+
+ strncpy(s, TERMID.as_mut_ptr() as *mut c_char, L_ctermid)
}
// #[no_mangle]
diff --git a/tests/Makefile b/tests/Makefile
index 636df83c..0f474532 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -159,6 +159,7 @@ NAMES=\
pwd \
sa_restart \
sigchld \
+ stdio/ctermid \
stdio/tempnam \
stdio/tmpnam \
stdlib/bsearch \
diff --git a/tests/stdio/ctermid.c b/tests/stdio/ctermid.c
new file mode 100644
index 00000000..5a291cf6
--- /dev/null
+++ b/tests/stdio/ctermid.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <string.h>
+
+#define DEVTTY "/dev/tty"
+
+int main(void)
+{
+ char *name = ctermid(NULL);
+ if(strcmp(name, DEVTTY) != 0) {
+ printf("ctermid name differs: expected %s, got: %s\n", DEVTTY, name);
+ return 1;
+ }
+
+ char name2[L_ctermid];
+ ctermid(name2);
+ if(strcmp(name, DEVTTY) != 0) {
+ printf("ctermid name2 differs: expected %s, got: %s\n", DEVTTY, name2);
+ return 1;
+ }
+
+ return 0;
+}
\ No newline at end of file
--
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