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fs: more cleanup

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This commit is contained in:
Omar Rizwan 2020-12-01 22:32:53 -08:00
parent a45e9ae97a
commit 648d595807
1 changed files with 0 additions and 98 deletions
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98
fs/tabfs.c
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@ -52,54 +52,6 @@ static int await_response(char **resp) {
return response_len;
}
// This helper macro is used to implement all the FUSE fs operations.
//
// It constructs a JSON object to represent the incoming request, then
// forwards that object to `send_request_then_await_response` (which
// then dispatches it to our browser extension over stdout). It awaits
// the response from the browser over stdin, then lets us pull that
// apart to ultimately return the data to FUSE.
//
// OP is an opcode string which the extension handles in JS.
// REQ_BUILDER_BODY is a block which should add whatever request
// properties you want to send to the browser to the `req` cJSON
// object. RESP_HANDLER_BODY should handle whatever response
// properties are on the `resp` cJSON object and pass them back to the
// kernel. It should also set the value of `ret` to the desired
// return value. (MAKE_REQ takes over return from the containing
// function so it can automatically return error values.)
#define MAKE_REQ(OP, REQ_BUILDER_BODY, RESP_HANDLER_BODY) \
do { \
int ret = -1; \
cJSON *req = NULL; \
cJSON *resp = NULL; \
\
req = cJSON_CreateObject(); \
cJSON_AddStringToObject(req, "op", OP); \
REQ_BUILDER_BODY \
\
resp = send_request_then_await_response(req); \
\
cJSON *error_item = cJSON_GetObjectItemCaseSensitive(resp, "error"); \
if (error_item) { \
ret = -error_item->valueint; \
if (ret != 0) goto done; \
} \
\
ret = -1; \
RESP_HANDLER_BODY \
\
done: \
if (req != NULL) cJSON_Delete(req); \
if (resp != NULL) cJSON_Delete(resp); \
return ret; \
} while (0)
#define JSON_GET_PROP_INT(LVALUE, KEY) \
do { \
LVALUE = cJSON_GetObjectItemCaseSensitive(resp, KEY)->valueint; \
} while (0)
#define receive_response(fmt, ...) \
do { \
char *resp; int resp_len; \
@ -122,19 +74,6 @@ static int tabfs_getattr(const char *path, struct stat *stbuf) {
receive_response("{st_mode: %d, st_nlink: %d, st_size: %d}",
&stbuf->st_mode, &stbuf->st_nlink, &stbuf->st_size);
return 0;
/* MAKE_REQ("getattr", { */
/* /\* cJSON_AddStringToObject(req, "path", path); *\/ */
/* }, { */
/* JSON_GET_PROP_INT(stbuf->st_mode, "st_mode"); */
/* JSON_GET_PROP_INT(stbuf->st_nlink, "st_nlink"); */
/* JSON_GET_PROP_INT(stbuf->st_size, "st_size"); */
/* ret = 0; */
/* }); */
}
static int tabfs_readlink(const char *path, char *buf, size_t size) {
@ -144,20 +83,6 @@ static int tabfs_readlink(const char *path, char *buf, size_t size) {
snprintf(buf, size, "%s", scan_buf); free(scan_buf);
return 0;
/* MAKE_REQ("readlink", { */
/* cJSON_AddStringToObject(req, "path", path); */
/* }, { */
/* cJSON *resp_buf_item = cJSON_GetObjectItemCaseSensitive(resp, "buf"); */
/* // FIXME: fix */
/* char *resp_buf = cJSON_GetStringValue(resp_buf_item); */
/* size_t resp_buf_size = strlen(resp_buf) + 1; */
/* size = resp_buf_size < size ? resp_buf_size : size; */
/* memcpy(buf, resp_buf, size); */
/* ret = 0; */
/* }); */
}
static int tabfs_open(const char *path, struct fuse_file_info *fi) {
@ -166,17 +91,6 @@ static int tabfs_open(const char *path, struct fuse_file_info *fi) {
receive_response("{fh: %d}", &fi->fh);
return 0;
/* MAKE_REQ("open", { */
/* cJSON_AddStringToObject(req, "path", path); */
/* cJSON_AddNumberToObject(req, "flags", fi->flags); */
/* }, { */
/* cJSON *fh_item = cJSON_GetObjectItemCaseSensitive(resp, "fh"); */
/* if (!fh_item) return -EIO; */
/* fi->fh = fh_item->valueint; */
/* ret = 0; */
/* }); */
}
static int
@ -292,18 +206,6 @@ tabfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
free(resp);
return 0;
/* MAKE_REQ("readdir", { */
/* cJSON_AddStringToObject(req, "path", path); */
/* }, { */
/* cJSON *entries = cJSON_GetObjectItemCaseSensitive(resp, "entries"); */
/* cJSON *entry; */
/* cJSON_ArrayForEach(entry, entries) { */
/* filler(buf, cJSON_GetStringValue(entry), NULL, 0); */
/* } */
/* ret = 0; */
/* }); */
}
static int