libc: Add EXIT_SUCCESS, EXIT_FAILURE, RAND_MAX and BUFSIZ

apps/src/uname.c

@@ -9,7 +9,7 @@ int main()
         return 1;
     }
 
-    char buf[32];
+    char buf[BUFSIZ];
     fgets(buf, sizeof(buf), fp);
 
     printf("%s\n", buf);

apps/src/uptime.c

@@ -10,7 +10,7 @@ int main()
         return 1;
     }
 
-    char buf[32];
+    char buf[BUFSIZ];
     fgets(buf, sizeof(buf), fp);
 
     if (ferror(fp))

libs/libc/include/stdio.h

@@ -8,6 +8,7 @@
 #include <bits/seek.h>
 
 #define FOPEN_MAX 32
+#define BUFSIZ 32
 
 typedef struct
 {

libs/libc/include/stdlib.h

@@ -2,8 +2,14 @@
 #define _STDLIB_H
 
 #include <bits/macros.h>
+#include <limits.h>
 #include <stddef.h>
 
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
+
+#define RAND_MAX INT_MAX
+
 #ifdef __cplusplus
 extern "C"
 {

libs/libc/src/file.cpp

@@ -13,8 +13,8 @@ void file_read_buf(FILE* stream)
 {
     if (!stream->f_buf)
     {
-        stream->f_buf = (char*)malloc(32); // FIXME: Handle errors.
+        stream->f_buf = (char*)malloc(BUFSIZ); // FIXME: Handle errors.
-        stream->f_bufrsize = 32;
+        stream->f_bufrsize = BUFSIZ;
     }
     stream->f_bufoff = 0;
     ssize_t nread = read(stream->f_fd, stream->f_buf, stream->f_bufrsize);