From 18e76a6c47b0f62b2458430d4357f3eb68bfd759 Mon Sep 17 00:00:00 2001
From: Robert Morris <rtm@csail.mit.edu>
Date: Mon, 1 Jul 2019 17:01:50 -0400
Subject: sbrk() returns a pointer, so it should be 64 bits

---
 kernel/sysfile.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

(limited to 'kernel/sysfile.c')

diff --git a/kernel/sysfile.c b/kernel/sysfile.c
index 7788de3..77e273f 100644
--- a/kernel/sysfile.c
+++ b/kernel/sysfile.c
@@ -52,7 +52,7 @@ fdalloc(struct file *f)
   return -1;
 }
 
-int
+uint64
 sys_dup(void)
 {
   struct file *f;
@@ -66,7 +66,7 @@ sys_dup(void)
   return fd;
 }
 
-int
+uint64
 sys_read(void)
 {
   struct file *f;
@@ -78,7 +78,7 @@ sys_read(void)
   return fileread(f, p, n);
 }
 
-int
+uint64
 sys_write(void)
 {
   struct file *f;
@@ -91,7 +91,7 @@ sys_write(void)
   return filewrite(f, p, n);
 }
 
-int
+uint64
 sys_close(void)
 {
   int fd;
@@ -104,7 +104,7 @@ sys_close(void)
   return 0;
 }
 
-int
+uint64
 sys_fstat(void)
 {
   struct file *f;
@@ -116,7 +116,7 @@ sys_fstat(void)
 }
 
 // Create the path new as a link to the same inode as old.
-int
+uint64
 sys_link(void)
 {
   char name[DIRSIZ], new[MAXPATH], old[MAXPATH];
@@ -182,7 +182,7 @@ isdirempty(struct inode *dp)
 }
 
 //PAGEBREAK!
-int
+uint64
 sys_unlink(void)
 {
   struct inode *ip, *dp;
@@ -284,7 +284,7 @@ create(char *path, short type, short major, short minor)
   return ip;
 }
 
-int
+uint64
 sys_open(void)
 {
   char path[MAXPATH];
@@ -347,7 +347,7 @@ sys_open(void)
   return fd;
 }
 
-int
+uint64
 sys_mkdir(void)
 {
   char path[MAXPATH];
@@ -363,7 +363,7 @@ sys_mkdir(void)
   return 0;
 }
 
-int
+uint64
 sys_mknod(void)
 {
   struct inode *ip;
@@ -383,7 +383,7 @@ sys_mknod(void)
   return 0;
 }
 
-int
+uint64
 sys_chdir(void)
 {
   char path[MAXPATH];
@@ -408,7 +408,7 @@ sys_chdir(void)
   return 0;
 }
 
-int
+uint64
 sys_exec(void)
 {
   char path[MAXPATH], *argv[MAXARG];
@@ -446,7 +446,7 @@ sys_exec(void)
   return ret;
 }
 
-int
+uint64
 sys_pipe(void)
 {
   uint64 fdarray; // user pointer to array of two integers
-- 
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