liblinux++

commit fef1d6a8707776fec14fada0070e678a03efeacd
parent e1bb4555001f97b03a501bab39c9ad6341055161
Author: Henry Wilson <henry@henryandlizzy.uk>
Date:   Mon, 22 Dec 2025 01:36:45 +0000

replace iovecc with span<char const>

Diffstat:
M
linux.hpp
 | 
22
+++++++++++++++++++---
M
test.cpp
 | 
2
+-
M
x86_64.s
 | 
3
++-

3 files changed, 22 insertions(+), 5 deletions(-)
diff --git a/linux.hpp b/linux.hpp
@@ -33,24 +33,40 @@ enum {
     DT_WHT = 14,
 };
 
-struct iovecc
+template <typename T>
+struct span
 {
-	char const* data;
+	T* data;
 	size_t len;
+
+	inline span(T* p, size_t n)
+	: data{p}
+	, len{n}
+	{}
+
+	template <size_t N>
+	inline span(T (&arr)[N])
+	: span{arr, N}
+	{}
 };
 
 __attribute__((noreturn))
 extern void exit(int error_code);
 
+extern "C" {
 extern int read(int fd, char* data, size_t count);
+}
+extern int read(int fd, span<char> data);
 
 extern "C" {
 extern int write(int fd, char const* data, size_t count);
 }
-extern int write(int fd, iovecc data);
+extern int write(int fd, span<char const> data);
 
 extern ssize_t writev(int fd, struct iovecc const* iov, size_t count);
 
+extern ssize_t write(int fd, span<span<char const> const> data);
+
 extern int openat(int fd, char const* name, int flags, int mode);
 
 extern int close(int fd);
diff --git a/test.cpp b/test.cpp
@@ -13,7 +13,7 @@ void text()
 	bss[1] = 's';
 	bss[2] = 's';
 	bss[3] = '\n';
-	write(1, bss, sizeof(bss));
+	write(1, bss);
 }
 
 int main()
diff --git a/x86_64.s b/x86_64.s
@@ -48,7 +48,7 @@ extern read
 _syscall	0	syscall3
 
 extern write
-extern_alias _Z5writei6iovecc
+extern_alias _Z5writei4spanIKcE
 _syscall	1	syscall3
 
 extern close
@@ -58,6 +58,7 @@ extern mmap
 _syscall	9	syscall6
 
 extern writev
+extern_alias _Z5writei4spanIKS_IKcEE
 _syscall	20	syscall3
 
 extern exit