From e894942e52480af63c2fe0551247bcf01f7e7279 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andrius=20=C5=A0tikonas?= <andrius@stikonas.eu>
Date: Thu, 28 Dec 2023 18:40:35 +0000
Subject: [PATCH] Add sys_lseek.

---
 posix-runner/posix-runner.c | 2 +-
 posix-runner/syscalls.c     | 7 ++++++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/posix-runner/posix-runner.c b/posix-runner/posix-runner.c
index 9cff02d..1a9aab8 100644
--- a/posix-runner/posix-runner.c
+++ b/posix-runner/posix-runner.c
@@ -134,7 +134,7 @@ int main(int argc, char **argv)
 
     /* Load binary into memory */
     int file_size = fseek(file_in, 0, SEEK_END);
-    char *file_data = malloc(file_size);
+    char *file_data = calloc(file_size + 0x1000); /* Allocate extra space in case application tries to use it */
     rewind(file_in);
     fread(file_data, 1, file_size, file_in);
     fclose(file_in);
diff --git a/posix-runner/syscalls.c b/posix-runner/syscalls.c
index 7ffa587..b2080d1 100644
--- a/posix-runner/syscalls.c
+++ b/posix-runner/syscalls.c
@@ -13,7 +13,6 @@ int sys_read(int fd, char* buf, unsigned count, void, void, void)
 
 int sys_write(int fd, char* buf, unsigned count, void, void, void)
 {
-    fputs("write\n", stderr);
     return write(fd, buf, count);
 }
 
@@ -22,6 +21,11 @@ int sys_open(char* name, int flag, int mode, void, void, void)
     return open(name, flag, mode);
 }
 
+int sys_lseek(int fd, int offset, int whence, void, void, void)
+{
+    return lseek(fd, offset, whence);
+}
+
 void sys_exit(unsigned value, void, void, void, void, void)
 {
     exit(value);
@@ -33,5 +37,6 @@ void init_syscalls()
     syscall_table[0] = sys_read;
     syscall_table[1] = sys_write;
     syscall_table[2] = sys_open;
+    syscall_table[8] = sys_lseek;
     syscall_table[60] = sys_exit;
 }