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#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <sys/statvfs.h>
#include <sys/stat.h>
#include "scheme.h"
#include "../any_log.h"
static void block_fs_update(block_t *block)
{
const char *path = ((char **)block->state)[0];
const char *text = ((char **)block->state)[1];
struct statvfs sbuf;
assert(statvfs(path, &sbuf) == 0);
static const char *fs_formats[] = {
"total",
"free",
"used",
NULL,
};
char buffer[32][3] = { 0 };
snprintf(buffer[0], 32, "%ld", sbuf.f_blocks * sbuf.f_frsize);
snprintf(buffer[1], 32, "%ld", sbuf.f_bavail * sbuf.f_bsize);
snprintf(buffer[2], 32, "%ld", (sbuf.f_blocks - sbuf.f_bavail) * sbuf.f_bsize);
const char *fs_values[] = {
buffer[0],
buffer[1],
buffer[2],
NULL,
};
free(block->text.text);
block->text.text = strformat(text, '%', fs_formats, fs_values);
assert(block->text.text != NULL);
}
static void block_fs_finalize(block_t *block)
{
free(block->state);
}
static bool block_fs_validate(block_t *block, const block_scheme_t *scheme)
{
if (block->text.text == NULL) {
log_error("Block '%s' requires key '%s'", block->label, "text");
return false;
}
if (strstr(block->text.text, "%{") == NULL) {
log_warn("Block '%s' does not use any fs variable", block->label);
block->update_cb = NULL;
log_debug("Disabled updates for block '%s'", block->label);
return true;
}
const char *path = ((char **)block->state)[0];
struct stat sbuf;
if (path == NULL || stat(path, &sbuf) < 0) {
log_error("Block '%s' was given an invalid path '%s'", block->label, path);
return false;
}
((char **)block->state)[1] = block->text.text;
block->text.text = NULL;
return true;
}
static const config_entry_t block_fs_entries[] = {
{ "path", CONFIG_STRING, NULL, 0 },
{ 0 },
};
const block_scheme_t block_fs_scheme = {
.name = "fs",
.block = {
.type = BLOCK_TEXT,
.update_interval = {
.tv_sec = 20,
.tv_nsec = 0,
},
.update_cb = block_fs_update,
.finalize_cb = block_fs_finalize,
},
.size = 2 * sizeof(char *),
.entries = block_fs_entries,
.validate = block_fs_validate,
};
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