From aa8a8811818331cf511681327e3ba95e456f0d33 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sat, 2 May 2020 15:44:11 +0200
Subject: Added many syscalls to get better POSIX compliance
---
src/kernel/syscall/actions/sys_read.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
create mode 100644 src/kernel/syscall/actions/sys_read.c
(limited to 'src/kernel/syscall/actions/sys_read.c')
diff --git a/src/kernel/syscall/actions/sys_read.c b/src/kernel/syscall/actions/sys_read.c
new file mode 100644
index 0000000..a954f56
--- /dev/null
+++ b/src/kernel/syscall/actions/sys_read.c
@@ -0,0 +1,22 @@
+#include <stdint.h>
+#include <kernel/fs/vfs.h>
+#include <kernel/fs/ext2.h>
+#include <kernel/lib/stdlib.h>
+#include <kernel/memory/alloc.h>
+
+uint32_t sys_read(char *path, uint32_t offset, uint32_t count, char *buf)
+{
+ struct fs_node *node = (struct fs_node *)umalloc(sizeof(struct fs_node));
+ strcpy(node->name, path);
+ ext2_root->open(node);
+ if (node->inode != 0) {
+ uint32_t size = ((struct ext2_file *)node->impl)->inode.size;
+ ext2_root->read(node, 0, size, buf);
+ buf[size - 1] = '\0';
+ ext2_root->close(node);
+ return size;
+ } else {
+ ext2_root->close(node);
+ return -1;
+ }
+}
\ No newline at end of file
--
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