From 8f637be1a4ce5b15918c7806e135f1a3180052dd Mon Sep 17 00:00:00 2001
From: f2-zakir <farhan2.zakir@live.uwe.ac.uk>
Date: Tue, 25 Jul 2023 22:14:49 +0000
Subject: [PATCH] Update syscall.c
---
src/userprog/syscall.c | 33 +++------------------------------
1 file changed, 3 insertions(+), 30 deletions(-)
diff --git a/src/userprog/syscall.c b/src/userprog/syscall.c
index 1752416..a876ff5 100644
--- a/src/userprog/syscall.c
+++ b/src/userprog/syscall.c
@@ -13,54 +13,27 @@ static void syscall_handler(struct intr_frame *);
bool create(const char *file, unsigned initial_size);
tid_t exec(const char *cmd_line);
-
void syscall_init(void) {
intr_register_int(0x30, 3, INTR_ON, syscall_handler, "syscall");
}
static void syscall_handler(struct intr_frame *f) {
-
- // Get the syscall number from the stack
int syscall_num = *(int *)f->esp;
-
switch (syscall_num) {
-
+
case SYS_REMOVE:
- // Print current syscall number
- printf("Syscall_handler() - %d!\n", syscall_num);
filesys_remove(*(char **)(f->esp + 4));
- printf(*(char **)(f->esp + 4));
break;
case SYS_EXEC:
- // Print current syscall number
- printf("Syscall_handler() - %d!\n", syscall_num);
- printf("SYS_CALL : EXEC \n");
- exec(*(char **)(f->esp + 4));
+ process_execute(*(char **)(f->esp + 4));
break;
case SYS_CREATE:
- // Print current syscall number
- printf("Syscall_handler() - %d!\n", syscall_num);
- create(*(int *)(f->esp + 4), (unsigned)*(int *)(f->esp + 8));
+ filesys_create(*(char**)(f->esp + 4), (unsigned)*(int *)(f->esp + 8));
break;
default:
thread_exit();
}
}
-
-
-tid_t exec(const char *cmd_line) {
- // showing the arg/process in the command line
- printf(" \ncmd_line : '%s'\n", cmd_line);
- // executing whatever in cmd_line then return to the process id
- tid_t pid = process_execute(cmd_line);
- return pid;
-}
-
-bool create(const char *file, unsigned initial_size) {
- // This creates a new file but doesn't open it
- printf("File named '%s' created\n", file);
- return filesys_create(file, initial_size);
-}
\ No newline at end of file
--
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