chore(driver): adopt consistent approach in fd casting for dup syscalls

Signed-off-by: Roberto Scolaro <roberto.scolaro21@gmail.com>

driver/ppm_fillers.c

@@ -5710,13 +5710,12 @@ int f_sys_dup_e(struct event_filler_arguments *args)
 {
 	int res;
 	unsigned long val;
-	int64_t fd = 0;
 
 	/*
 	 * oldfd
 	 */
 	syscall_get_arguments_deprecated(args, 0, 1, &val);
-	fd = (int32_t) val;
+	int32_t fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);
 
@@ -5727,8 +5726,6 @@ int f_sys_dup_x(struct event_filler_arguments *args)
 {
 	int res;
 	unsigned long val;
-	int64_t fd = 0;
-
 
 	int64_t retval = (int64_t)syscall_get_return_value(current, args->regs);
 	res = val_to_ring(args, retval, 0, false, 0);
@@ -5738,7 +5735,7 @@ int f_sys_dup_x(struct event_filler_arguments *args)
 	 * oldfd
 	 */
 	syscall_get_arguments_deprecated(args, 0, 1, &val);
-	fd = (int64_t) val;
+	int32_t fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);
 
@@ -5749,13 +5746,12 @@ int f_sys_dup2_e(struct event_filler_arguments *args)
 {
 	int res;
 	unsigned long val;
-	int64_t fd = 0;
 
 	/*
 	 * oldfd
 	 */
 	syscall_get_arguments_deprecated(args, 0, 1, &val);
-	fd = (int32_t) val;
+	int32_t fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);
 
@@ -5766,8 +5762,6 @@ int f_sys_dup2_x(struct event_filler_arguments *args)
 {
 	int res;
 	unsigned long val;
-	int64_t fd = 0;
-
 
 	int64_t retval = (int64_t)syscall_get_return_value(current, args->regs);
 	res = val_to_ring(args, retval, 0, false, 0);
@@ -5777,18 +5771,17 @@ int f_sys_dup2_x(struct event_filler_arguments *args)
 	 * oldfd
 	 */
 	syscall_get_arguments_deprecated(args, 0, 1, &val);
-	fd = (int64_t) val;
+	int32_t fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);
 
 	/*
 	 * newfd
 	 */
 	syscall_get_arguments_deprecated(args, 1, 1, &val);
-	fd = (int64_t) val;
-	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
-	CHECK_RES(res)
-	;
+	fd = (int32_t) val;
+	res = val_to_ring(args, (int32_t)fd, 0, false, 0);
+	CHECK_RES(res);
 
 	return add_sentinel(args);
 }
@@ -5797,13 +5790,12 @@ int f_sys_dup3_e(struct event_filler_arguments *args)
 {
 	int res;
 	unsigned long val;
-	int64_t fd = 0;
 
 	/*
 	 * oldfd
 	 */
 	syscall_get_arguments_deprecated(args, 0, 1, &val);
-	fd = (int64_t) val;
+	int32_t fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);
 
@@ -5814,7 +5806,6 @@ int f_sys_dup3_x(struct event_filler_arguments *args)
 {
 	int res;
 	unsigned long val;
-	int64_t fd = 0;
 
 	int64_t retval = (int64_t)syscall_get_return_value(current, args->regs);
 	res = val_to_ring(args, retval, 0, false, 0);
@@ -5824,15 +5815,15 @@ int f_sys_dup3_x(struct event_filler_arguments *args)
 	 * oldfd
 	 */
 	syscall_get_arguments_deprecated(args, 0, 1, &val);
-	fd = (int64_t) val;
+	int32_t fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);
 
 	/*
 	 * newfd
 	 */
 	syscall_get_arguments_deprecated(args, 1, 1, &val);
-	fd = (int64_t) val;
+	fd = (int32_t) val;
 	res = val_to_ring(args, (int64_t)fd, 0, false, 0);
 	CHECK_RES(res);