Various stubs while trying to get an old coreutils to build.

Author: awesomekling

LibC/dirent.cpp

@@ -4,6 +4,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <errno.h>
+#include <fcntl.h>
 #include <Kernel/Syscall.h>
 
 extern "C" {

LibC/errno_numbers.h

@@ -40,6 +40,7 @@
     __ERROR(EOPNOTSUPP,     "Operation not supported") \
     __ERROR(ENOSYS,         "No such syscall") \
     __ERROR(ENOTIMPL,       "Not implemented") \
+    __ERROR(EAFNOSUPPORT,   "Address family not supported") \
 
 enum __errno_values {
 #undef __ERROR

LibC/fcntl.h

@@ -12,6 +12,19 @@ __BEGIN_DECLS
 
 #define FD_CLOEXEC 1
 
+#define O_RDONLY 0
+#define O_WRONLY 1
+#define O_RDWR 2
+#define O_CREAT 0100
+#define O_EXCL 0200
+#define O_NOCTTY 0400
+#define O_TRUNC 01000
+#define O_APPEND 02000
+#define O_NONBLOCK 04000
+#define O_DIRECTORY 00200000
+#define O_NOFOLLOW 00400000
+#define O_CLOEXEC 02000000
+
 int fcntl(int fd, int cmd, ...);
 
 __END_DECLS

LibC/limits.h

@@ -8,7 +8,18 @@
 #define INT_MAX INT32_MAX
 #define INT_MIN INT32_MIN
 
+#define UINT_MAX UINT32_MAX
+#define UINT_MIN UINT32_MIN
+
 #define CHAR_BIT 8
 #define SCHAR_MIN (-128)
 #define SCHAR_MAX 127
 #define UCHAR_MAX 255
+
+#define LONG_MAX 2147483647L
+#define LONG_MIN (-LONG_MAX - 1L)
+
+#define CHAR_MIN SCHAR_MIN
+#define CHAR_MAX SCHAR_MAX
+
+#define MB_LEN_MAX 16

LibC/locale.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <sys/cdefs.h>
+
+enum {
+    LC_ALL,
+    LC_NUMERIC,
+};
+
+__BEGIN_DECLS
+
+char* setlocale(int category, const char* locale);
+
+__END_DECLS
+

LibC/stdio.cpp

@@ -7,6 +7,7 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <fcntl.h>
 #include <Kernel/Syscall.h>
 #include <AK/printf.cpp>
 

LibC/stdlib.cpp

@@ -66,8 +66,8 @@ void* realloc(void *ptr, size_t size)
 
 void exit(int status)
 {
-    Syscall::invoke(Syscall::SC_exit, (dword)status);
-    for (;;);
+    _exit(status);
+    assert(false);
 }
 
 void abort()

LibC/stdlib.h

@@ -5,6 +5,9 @@
 
 __BEGIN_DECLS
 
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
+
 void* malloc(size_t) __MALLOC;
 void free(void*);
 void* calloc(size_t nmemb, size_t);

LibC/string.cpp

@@ -90,15 +90,16 @@ int memcmp(const void* v1, const void* v2, size_t n)
     return 0;
 }
 
-void memcpy(void* dest, const void* src, size_t n)
+void* memcpy(void* dest, const void* src, size_t n)
 {
     auto* bdest = (unsigned char*)dest;
     auto* bsrc = (const unsigned char*)src;
     for (; n; --n)
         *(bdest++) = *(bsrc++);
+    return dest;
 }
 
-void memmove(void* dest, const void* src, size_t n)
+void* memmove(void* dest, const void* src, size_t n)
 {
     if (dest < src)
         return memcpy(dest, src, n);

LibC/string.h

@@ -9,8 +9,8 @@ size_t strlen(const char*);
 int strcmp(const char*, const char*);
 int strncmp(const char*, const char*, size_t);
 int memcmp(const void*, const void*, size_t);
-void memcpy(void*, const void*, size_t);
-void memmove(void*, const void*, size_t);
+void* memcpy(void*, const void*, size_t);
+void* memmove(void*, const void*, size_t);
 void bzero(void*, size_t);
 void bcopy(const void*, void*, size_t);
 void* memset(void*, int, size_t);