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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_mem.h>
#include <fluent-bit/flb_kernel.h>
#include <fluent-bit/flb_utils.h>
#ifdef _WIN32
/* Dummy function for Windows environment */
struct flb_kernel *flb_kernel_info()
{
int len;
struct flb_kernel *kernel;
kernel = flb_malloc(sizeof(struct flb_kernel));
if (!kernel) {
flb_errno();
return NULL;
}
kernel->minor = 0;
kernel->major = 0;
kernel->patch = 0;
kernel->s_version.data = flb_malloc(16);
if (!kernel->s_version.data) {
flb_errno();
flb_free(kernel);
return NULL;
}
len = snprintf(kernel->s_version.data, 16, "0.0.0");
if (len == -1) {
perror("snprintf");
return NULL;
}
kernel->s_version.len = len;
kernel->n_version = 0;
return kernel;
}
#else
#include <ctype.h>
#include <sys/utsname.h>
/*
* Routine taken from Monkey Project, Eduardo says it's ok ;)
*/
struct flb_kernel *flb_kernel_info()
{
int a, b, c;
int len;
int pos;
char *p, *t;
char *tmp;
struct utsname uts;
struct flb_kernel *kernel;
if (uname(&uts) == -1) {
flb_errno();
return NULL;
}
len = strlen(uts.release);
/* Fixme: this don't support Linux Kernel 10.x.x :P */
a = (*uts.release - '0');
/* Second number */
p = (uts.release) + 2;
pos = mk_string_char_search(p, '.', len - 2);
if (pos <= 0) {
/* Some Debian systems uses a different notation, e.g: 3.14-2-amd64 */
pos = mk_string_char_search(p, '-', len - 2);
if (pos <= 0) {
return NULL;
}
}
tmp = mk_string_copy_substr(p, 0, pos);
if (!tmp) {
return NULL;
}
b = atoi(tmp);
mk_mem_free(tmp);
/* Last number (it needs filtering) */
t = p = p + pos + 1;
do {
t++;
} while (isdigit(*t));
tmp = mk_string_copy_substr(p, 0, t - p);
if (!tmp) {
return NULL;
}
c = atoi(tmp);
mk_mem_free(tmp);
kernel = flb_malloc(sizeof(struct flb_kernel));
if (!kernel) {
flb_errno();
return NULL;
}
kernel->minor = a;
kernel->major = b;
kernel->patch = c;
kernel->s_version.data = flb_malloc(16);
if (!kernel->s_version.data) {
flb_errno();
flb_free(kernel);
return NULL;
}
len = snprintf(kernel->s_version.data, 16, "%i.%i.%i", a, b, c);
if (len == -1) {
flb_errno();
flb_free(kernel->s_version.data);
flb_free(kernel);
return NULL;
}
kernel->s_version.len = len;
kernel->n_version = FLB_KERNEL_VERSION(a, b, c);
return kernel;
}
#endif
void flb_kernel_destroy(struct flb_kernel *kernel)
{
if (kernel == NULL) {
return;
}
if (kernel->s_version.data) {
flb_free(kernel->s_version.data);
}
flb_free(kernel);
}
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