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improved filesystem interface

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IonutParau
2025-07-12 16:29:48 +02:00
parent d9670610f8
commit af1244b829
3 changed files with 231 additions and 161 deletions
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54
src/neonucleus.h
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@@ -625,47 +625,51 @@ typedef struct nn_filesystemControl {
double createEnergy;
} nn_filesystemControl;
typedef struct nn_filesystem {
nn_refc refc;
typedef struct nn_filesystemTable {
void *userdata;
void (*deinit)(nn_component *component, void *userdata);
void (*deinit)(void *userdata);
nn_filesystemControl (*control)(nn_component *component, void *userdata);
void (*getLabel)(nn_component *component, void *userdata, char *buf, nn_size_t *buflen);
nn_size_t (*setLabel)(nn_component *component, void *userdata, const char *buf, nn_size_t buflen);
nn_filesystemControl (*control)(void *userdata);
void (*getLabel)(void *userdata, char *buf, nn_size_t *buflen);
nn_size_t (*setLabel)(void *userdata, const char *buf, nn_size_t buflen);
nn_size_t (*spaceUsed)(nn_component *component, void *userdata);
nn_size_t (*spaceTotal)(nn_component *component, void *userdata);
nn_bool_t (*isReadOnly)(nn_component *component, void *userdata);
nn_size_t (*spaceUsed)(void *userdata);
nn_size_t spaceTotal;
nn_bool_t (*isReadOnly)(void *userdata);
// general operations
nn_size_t (*size)(nn_component *component, void *userdata, const char *path);
nn_bool_t (*remove)(nn_component *component, void *userdata, const char *path);
nn_size_t (*lastModified)(nn_component *component, void *userdata, const char *path);
nn_size_t (*rename)(nn_component *component, void *userdata, const char *from, const char *to);
nn_bool_t (*exists)(nn_component *component, void *userdata, const char *path);
nn_size_t (*size)(void *userdata, const char *path);
nn_size_t (*remove)(void *userdata, const char *path);
nn_size_t (*lastModified)(void *userdata, const char *path);
nn_size_t (*rename)(void *userdata, const char *from, const char *to);
nn_bool_t (*exists)(void *userdata, const char *path);
// directory operations
nn_bool_t (*isDirectory)(nn_component *component, void *userdata, const char *path);
nn_bool_t (*makeDirectory)(nn_component *component, void *userdata, const char *path);
nn_bool_t (*isDirectory)(void *userdata, const char *path);
nn_bool_t (*makeDirectory)(void *userdata, const char *path);
// The returned array should be allocated with the supplied allocator.
// The strings should be null terminated. Use nn_strdup for the allocation to guarantee nn_deallocStr deallocates it correctly.
// For the array, the *exact* size of the allocation should be sizeof(char *) * (*len),
// If it is not, the behavior is undefined.
// We recommend first computing len then allocating, though if that is not doable or practical,
// consider nn_resize()ing it to the correct size to guarantee a correct deallocation.
char **(*list)(nn_Alloc *alloc, nn_component *component, void *userdata, const char *path, nn_size_t *len);
char **(*list)(nn_Alloc *alloc, void *userdata, const char *path, nn_size_t *len);
// file operations
nn_size_t (*open)(nn_component *component, void *userdata, const char *path, const char *mode);
nn_bool_t (*close)(nn_component *component, void *userdata, int fd);
nn_bool_t (*write)(nn_component *component, void *userdata, int fd, const char *buf, nn_size_t len);
nn_size_t (*read)(nn_component *component, void *userdata, int fd, char *buf, nn_size_t required);
// moved is an out pointer that says how many bytes the pointer moved.
nn_size_t (*seek)(nn_component *component, void *userdata, int fd, const char *whence, int off, int *moved);
} nn_filesystem;
void *(*open)(void *userdata, const char *path, const char *mode);
nn_bool_t (*close)(void *userdata, void *fd);
nn_bool_t (*write)(void *userdata, void *fd, const char *buf, nn_size_t len);
nn_size_t (*read)(void *userdata, void *fd, char *buf, nn_size_t required);
nn_size_t (*seek)(void *userdata, void *fd, const char *whence, int off);
} nn_filesystemTable;
typedef struct nn_filesystem nn_filesystem;
nn_filesystem *nn_newFilesystem(nn_Context *context, nn_filesystemTable table, nn_filesystemControl control);
nn_guard *nn_getFilesystemLock(nn_filesystem *fs);
void nn_retainFilesystem(nn_filesystem *fs);
nn_bool_t nn_destroyFilesystem(nn_filesystem *fs);
nn_filesystem *nn_volatileFileSystem(nn_size_t capacity, nn_filesystemControl *control);
nn_component *nn_addFileSystem(nn_computer *computer, nn_address address, int slot, nn_filesystem *filesystem);
// Drive