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Working port of Little FS

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This commit is contained in:
Kamil Kowalczyk
2025-08-16 20:35:00 +02:00
parent 2b0566c56f
commit 8da890e388
20 changed files with 332 additions and 19 deletions
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27
kernel/fs/kvfs/kvfs.c
View File

@ -32,14 +32,10 @@ int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *co
spinlock_acquire(&vmp->spinlock);
HSHTB_GET(&vmp->fs.kvfs, nodes, (char *)key, key_, node);
if (node == NULL) {
HSHTB_ALLOC(&vmp->fs.kvfs, nodes, (char *)key, key_, node);
if (node == NULL) {
spinlock_release(&vmp->spinlock);
return E_NOMEMORY;
}
}
spinlock_release(&vmp->spinlock);
if (node == NULL) {
return E_NOENTRY;
}
spinlock_acquire(&node->spinlock);
vmp->backingsd->write(vmp->backingsd, buffer, n, off);
@ -72,9 +68,26 @@ int32_t kvfs_cleanup(struct VfsMountPoint *vmp) {
return E_OK;
}
int32_t kvfs_create(struct VfsMountPoint *vmp, const char *path, int32_t type) {
(void)type;
KvfsNode *node = NULL;
spinlock_acquire(&vmp->spinlock);
HSHTB_ALLOC(&vmp->fs.kvfs, nodes, (char *)path, key_, node);
spinlock_release(&vmp->spinlock);
if (node == NULL) {
return E_NOMEMORY;
}
return E_OK;
}
bool kvfs_check(void) {
int32_t ret;
ret = vfs_create("tmpvars", "hello", VFS_CREATE_FILE);
if (ret != E_OK) return false;
char *hello = "WAWAWAWA!!!";
ret = vfs_write("tmpvars", "hello", hello, hal_strlen(hello)+1, 0);
if (ret != E_OK) return false;

2
kernel/fs/kvfs/kvfs.h
View File

@ -1,6 +1,7 @@
#ifndef FS_KVFS_KVFS_H_
#define FS_KVFS_KVFS_H_
#include <stdint.h>
#include <stdbool.h>
struct VfsMountPoint;
@ -22,6 +23,7 @@ typedef struct {
int32_t kvfs_read(struct VfsMountPoint *vmp, const char *key, uint8_t *const buffer, size_t n, size_t off);
int32_t kvfs_write(struct VfsMountPoint *vmp, const char *key, const uint8_t *const buffer, size_t n, size_t off);
int32_t kvfs_remove(struct VfsMountPoint *vmp, const char *key);
int32_t kvfs_create(struct VfsMountPoint *vmp, const char *path, int32_t type);
int32_t kvfs_cleanup(struct VfsMountPoint *vmp);
bool kvfs_check(void);