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Simple file IO with the ioctl syscall

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This commit is contained in:
Kamil Kowalczyk
2025-09-05 19:56:27 +02:00
parent f42c4b7e44
commit fb5e88a175
16 changed files with 299 additions and 6 deletions
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29
kernel/fs/portlfs/portlfs.c
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@ -27,6 +27,10 @@ void littlefs_vobj_cleanup(struct VfsObj *vobj) {
}
int32_t littlefs_vobj_read(struct VfsObj *vobj, uint8_t *const buffer, size_t n, size_t off) {
if (!(vobj->flags & VFS_FLAG_READ)) {
return E_INVALIDOPER;
}
spinlock_acquire(&vobj->spinlock);
int ok = lfs_file_seek(&vobj->vmp->fs.littlefs.instance, (lfs_file_t *)vobj->extra, off, LFS_SEEK_SET);
@ -45,6 +49,29 @@ int32_t littlefs_vobj_read(struct VfsObj *vobj, uint8_t *const buffer, size_t n,
return E_OK;
}
int32_t littlefs_vobj_write(struct VfsObj *vobj, const uint8_t *const buffer, size_t n, size_t off) {
if (!(vobj->flags & VFS_FLAG_WRITE)) {
return E_INVALIDOPER;
}
spinlock_acquire(&vobj->spinlock);
int ok = lfs_file_seek(&vobj->vmp->fs.littlefs.instance, (lfs_file_t *)vobj->extra, off, LFS_SEEK_SET);
if (ok < 0) {
spinlock_release(&vobj->spinlock);
return E_BADIO;
}
ok = lfs_file_write(&vobj->vmp->fs.littlefs.instance, (lfs_file_t *)vobj->extra, buffer, n);
if (ok < 0) {
spinlock_release(&vobj->spinlock);
return E_BADIO;
}
spinlock_release(&vobj->spinlock);
return E_OK;
}
int32_t littlefs_vobj_stat(struct VfsObj *vobj, struct VfsStat *stat) {
struct lfs_info statbuf;
@ -107,12 +134,14 @@ struct VfsObj *littlefs_open(struct VfsMountPoint *vmp, const char *path, uint32
return NULL;
}
vobj->flags = flags;
vobj->extra = file;
vobj->extrasize = sizeof(*file);
vobj->vmp = vmp;
vobj->cleanup = &littlefs_vobj_cleanup;
vobj->read = &littlefs_vobj_read;
vobj->stat = &littlefs_vobj_stat;
vobj->write = &littlefs_vobj_write;
hal_strcpy(vobj->path, path);
spinlock_release(&vmp->spinlock);