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feature (VFS): returning amount of written/read bytes

This commit is contained in:
antifallobst 2023-05-02 18:01:53 +02:00
parent ce905f1a36
commit 406dc0ee9e
4 changed files with 19 additions and 14 deletions
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6
inc/drivers/fs/ramfs.h
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@ -5,9 +5,9 @@
#include "drivers/fs/vfs.h"
void ramfs_file_delete (vfs_node_T* node);
void ramfs_file_write (vfs_node_T* node, uint64_t size, uint8_t* buffer_in);
void ramfs_file_read (vfs_node_T* node, uint64_t size, uint8_t* buffer_out);
void ramfs_file_delete (vfs_node_T* node);
uint64_t ramfs_file_write (vfs_node_T* node, uint64_t size, uint8_t* buffer_in);
uint64_t ramfs_file_read (vfs_node_T* node, uint64_t size, uint8_t* buffer_out);
#endif //NOX_RAMFS_H

4
inc/drivers/fs/vfs.h
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@ -65,8 +65,8 @@ vfs_node_T* vfs_node_resolve_child (vfs_node_T* node, string_t chil
vfs_node_T* vfs_file_create (fs_T* filesystem, string_t path);
void vfs_file_delete (vfs_node_T* file);
void vfs_file_write (vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_in);
void vfs_file_read (vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_out);
uint64_t vfs_file_write (vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_in);
uint64_t vfs_file_read (vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_out);
vfs_node_T* vfs_directory_create (fs_T* filesystem, string_t path);
void vfs_directory_delete (vfs_node_T* directory);

9
src/drivers/fs/ramfs.c
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@ -10,7 +10,7 @@ void ramfs_file_delete(vfs_node_T* node) {
vfs_node_cache_destruct(node->cache);
}
void ramfs_file_write(vfs_node_T* node, uint64_t size, uint8_t* buffer_in) {
uint64_t ramfs_file_write(vfs_node_T* node, uint64_t size, uint8_t* buffer_in) {
if (node->cache != NULL) {
vfs_node_cache_destruct(node->cache);
}
@ -18,10 +18,13 @@ void ramfs_file_write(vfs_node_T* node, uint64_t size, uint8_t* buffer_in) {
vfs_node_cache_create(node, size);
memory_copy(buffer_in, node->cache->buffer, size);
return size;
}
void ramfs_file_read(vfs_node_T* node, uint64_t size, uint8_t* buffer_out) {
if (node->cache == NULL) { return; }
uint64_t ramfs_file_read(vfs_node_T* node, uint64_t size, uint8_t* buffer_out) {
if (node->cache == NULL) { return 0; }
memory_copy(node->cache->buffer, buffer_out, MIN(size, node->cache->buffer_size));
return size;
}

14
src/drivers/fs/vfs.c
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@ -224,31 +224,33 @@ void vfs_file_delete(vfs_node_T* file) {
vfs_node_destruct(file);
}
void vfs_file_write(vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_in) {
uint64_t vfs_file_write(vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_in) {
// in future this probably isn't a good way to determine the size of a file:
file->size = size;
switch (file->filesystem->type) {
case FS_RAMFS: {
ramfs_file_write(file, size, buffer_in);
break;
return ramfs_file_write(file, size, buffer_in);
}
default: {
break;
}
}
return 0;
}
void vfs_file_read(vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_out) {
uint64_t vfs_file_read(vfs_node_T* file, uint64_t position, uint64_t size, uint8_t* buffer_out) {
switch (file->filesystem->type) {
case FS_RAMFS: {
ramfs_file_read(file, size, buffer_out);
break;
return ramfs_file_read(file, size, buffer_out);
}
default: {
break;
}
}
return 0;
}
vfs_node_T* vfs_directory_create(fs_T* filesystem, string_t path) {