From 3b3ce23df042a8a0e7e56ed3813618efdd95ca08 Mon Sep 17 00:00:00 2001
From: hasslesstech <hasslesstech@tutanota.com>
Date: Sat, 26 Apr 2025 19:46:34 +0300
Subject: [PATCH] add seek, read, write

---
 inc/fs.h  |  3 +++
 src/cli.c |  6 +++---
 src/fs.c  | 11 ++++++++++-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/inc/fs.h b/inc/fs.h
index 97e9df9..6abd122 100644
--- a/inc/fs.h
+++ b/inc/fs.h
@@ -56,6 +56,9 @@ int fs_ls(void *d);
 int fs_la(void *d);
 int fs_rm(void *d);
 int fs_open(void *d);
+int fs_seek(void *d);
+int fs_read(void *d);
+int fs_write(void *d);
 int fs_close(void *d);
 int fs_allow_write(void *d);
 int fs_prohibit_write(void *d);
diff --git a/src/cli.c b/src/cli.c
index 6afa691..d17fa36 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -21,9 +21,9 @@ static const struct CliCommandEntry cmd[] = {
 	{"rm", 1, (enum CliArgType[]) {STR}, fs_rm},
 	//{"truncate", 2, (enum CliArgType[]) {STR, INT}, fs_truncate},
 	{"open", 1, (enum CliArgType[]) {STR}, fs_open},
-	//{"seek", 2, (enum CliArgType[]) {INT, INT}, fs_seek},
-	//{"read", 2, (enum CliArgType[]) {INT, INT}, fs_read},
-	//{"write", 2, (enum CliArgType[]) {INT, STR}, fs_write},
+	{"seek", 2, (enum CliArgType[]) {INT, INT}, fs_seek},
+	{"read", 2, (enum CliArgType[]) {INT, INT}, fs_read},
+	{"write", 2, (enum CliArgType[]) {INT, STR}, fs_write},
 	{"close", 1, (enum CliArgType[]) {INT}, fs_close},
 
 	// custom commands
diff --git a/src/fs.c b/src/fs.c
index d381257..21abef2 100644
--- a/src/fs.c
+++ b/src/fs.c
@@ -856,7 +856,7 @@ print_read_data:
 int fs_write(void *d)
 {
 	int fd = ((int *) d)[0];
-	char *str = *((char **) d+4);
+	char *str = *((char **) ((char *) d+4));
 	int str_len = strlen(str);
 
 	if (!fs_file_descriptions[fd].inode) {
@@ -890,6 +890,15 @@ int fs_write(void *d)
 			fd, fs_file_descriptions[fd].rw_offset, fs_file_descriptions[fd].rw_offset + str_len);
 	fs_file_descriptions[fd].rw_offset += str_len;
 
+	struct fs_inode f;
+	read_block(fs_file_descriptions[fd].inode, (void *) &f);
+
+	if (fs_file_descriptions[fd].rw_offset > f.size) {
+		pr("Increasing fd %d file size: %d -> %d\n", fd, f.size, f.size + str_len);
+		f.size = fs_file_descriptions[fd].rw_offset;
+		write_block(fs_file_descriptions[fd].inode, (void *) &f);
+	}
+
 	return 0;
 }