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KimisOS
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Decoupled ramfs from vfs functionality

This commit is contained in:
notsomeidiot123 2026-06-26 13:49:04 -04:00
parent a83fc6a45d
commit 9abca0e245
3 changed files with 36 additions and 12 deletions
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1
src/kernel/system/ramfs.h
View File

@ -3,4 +3,5 @@
void ramfs_init();
vfile_t *ramfs_create(char *path, FS_FILE_FLAGS flags);
//Will never create a new reference
vfile_t *get_root_dir();

29
src/kernel/system/vfs.c
View File

@ -42,38 +42,61 @@ vfile_t *vfcreate(vfile_t *parent_dir, char *relpath, FS_FILE_FLAGS flags){
new_file = parent_dir->fileops->create(name, flags);
}
else{
vfile_t *new_parent = lookup(name, parent_dir);
vfile_t *new_parent = rfopen(name, parent_dir);
if(!new_parent){
kfree(name);
return 0;
}
new_file = vfcreate(new_parent, name+name_index+1, flags);
fclose(new_parent);
}
kfree(name);
return new_file;
}
int fdelete(vfile_t *file_entry){
if(!file_entry || !file_entry->fileops || !file_entry->fileops->delete){
return 0;
}
return file_entry->fileops->delete(file_entry);
}
int fwrite(vfile_t *file_entry, void *byte_array, uint32_t offset, uint32_t count){
if(!file_entry || !file_entry->fileops || !file_entry->fileops->write ||!byte_array || count == 0){
return 0;
}
return file_entry->fileops->write(file_entry, byte_array, offset, count);
}
int fread(vfile_t *file_entry, void *byte_array, uint32_t offset, uint32_t count){
if(!file_entry || !file_entry->fileops || !file_entry->fileops->read || !byte_array || count == 0){
return 0;
}
return file_entry->fileops->read(file_entry, byte_array, offset, count);
}
vfile_t *lookup(char *name, vfile_t *dir){
//fopen but relative to *dir
vfile_t *rfopen(char *name, vfile_t *dir){
if(!dir || !name || !dir->fileops || !dir->fileops->rfopen){
return 0;
}
return dir->fileops->rfopen(name);
}
int readdir(vfile_t* file, vfile_t* buffer, uint32_t offset, uint32_t count){
return 0;
}
vfile_t *fopen(char *name){
if(!name){
return 0;
}
vfile_t *root = get_root_dir();
return root->fileops->open(name + (name[0] == '/'));
}
vfile_t *fclose(vfile_t *file){
if(!file || !file->fileops || !file->fileops->close);
file->fileops->close(file);
return 0;
}

10
src/kernel/system/vfs.h
View File

@ -19,8 +19,8 @@ typedef struct fileops{
int (*read)(struct virtual_file *file_entry, void *data, uint32_t offset, uint32_t count);
struct virtual_file *(*open)(char *path);
void (*close)(struct virtual_file *file);
int (*readdir)(struct virtual_file* file, struct virtual_file *buffer, uint32_t count, uint32_t offset);
// struct virtual_file **(*lookup)(char *name);
// int (*readdir)(struct virtual_file* file, struct virtual_file *buffer, uint32_t count, uint32_t offset);
struct virtual_file *(*rfopen)(char *name);
} fileops_t;
typedef struct virtual_file{
@ -37,14 +37,14 @@ typedef struct virtual_file{
}vfile_t;
// vfile_t *lookup(char *name, vfile_t dir);
// vfile_t *rfopen(char *name, vfile_t dir);
vfile_t *fcreate(char *path, FS_FILE_FLAGS flags);
int fdelete(vfile_t* file_entry);
int fwrite(vfile_t *file_entry, void *byte_array, uint32_t offset, uint32_t count);
int fread(vfile_t *file_entry, void *byte_array, uint32_t offset, uint32_t count);
int readdir(vfile_t* file, vfile_t *buffer, uint32_t offset, uint32_t count);
// int readdir(vfile_t* file, vfile_t *buffer, uint32_t offset, uint32_t count);
vfile_t *vfcreate(vfile_t *parent, char *relpath, FS_FILE_FLAGS flags);
vfile_t *lookup(char *name, vfile_t *dir);
vfile_t *rfopen(char *name, vfile_t *dir);
vfile_t *fopen(char *path);