src/critical_log.c

   1 /*
   2  * Copyright 2013  Samsung Electronics Co., Ltd
   3  *
   4  * Licensed under the Flora License, Version 1.1 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://floralicense.org/license/
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <stdio.h>
  18 #include <stdarg.h>
  19 #include <stdlib.h>
  20 #include <sys/time.h>
  21 #include <errno.h>
  22 #include <string.h>
  23 #include <libgen.h>
  24 #include <sys/types.h>
  25 #include <unistd.h>
  26
  27 #include <dlog.h>
  28
  29 #include "conf.h"
  30 #include "debug.h"
  31 #include "util.h"
  32 #include "critical_log.h"
  33 #include "livebox-errno.h" /* For error code */
  34
  35 static struct {
  36         FILE *fp;
  37         int file_id;
  38         int nr_of_lines;
  39         char *filename;
  40 } s_info = {
  41         .fp = NULL,
  42         .file_id = 0,
  43         .nr_of_lines = 0,
  44         .filename = NULL,
  45 };
  46
  47
  48
  49 int critical_log(const char *func, int line, const char *fmt, ...)
  50 {
  51         va_list ap;
  52         int ret;
  53         struct timeval tv;
  54
  55         if (!s_info.fp) {
  56                 return LB_STATUS_ERROR_IO;
  57         }
  58
  59         gettimeofday(&tv, NULL);
  60         fprintf(s_info.fp, "%d %lu.%lu [%s:%d] ", getpid(), tv.tv_sec, tv.tv_usec, util_basename((char *)func), line);
  61
  62         va_start(ap, fmt);
  63         ret = vfprintf(s_info.fp, fmt, ap);
  64         va_end(ap);
  65
  66         s_info.nr_of_lines++;
  67         if (s_info.nr_of_lines == MAX_LOG_LINE) {
  68                 char *filename;
  69                 int namelen;
  70
  71                 s_info.file_id = (s_info.file_id + 1) % MAX_LOG_FILE;
  72
  73                 namelen = strlen(s_info.filename) + strlen(SLAVE_LOG_PATH) + 20;
  74                 filename = malloc(namelen);
  75                 if (filename) {
  76                         snprintf(filename, namelen, "%s/%d_%s", SLAVE_LOG_PATH, s_info.file_id, s_info.filename);
  77
  78                         if (s_info.fp) {
  79                                 if (fclose(s_info.fp) != 0) {
  80                                         ErrPrint("fclose: %s\n", strerror(errno));
  81                                 }
  82                         }
  83
  84                         s_info.fp = fopen(filename, "w+");
  85                         if (!s_info.fp) {
  86                                 ErrPrint("Failed to open a file: %s\n", filename);
  87                         }
  88
  89                         free(filename);
  90                 }
  91
  92                 s_info.nr_of_lines = 0;
  93         }
  94         return ret;
  95 }
  96
  97
  98
  99 int critical_log_init(const char *name)
 100 {
 101         int namelen;
 102         char *filename;
 103
 104         if (s_info.fp) {
 105                 return 0;
 106         }
 107
 108         s_info.filename = strdup(name);
 109         if (!s_info.filename) {
 110                 ErrPrint("Failed to create a log file\n");
 111                 return LB_STATUS_ERROR_MEMORY;
 112         }
 113
 114         namelen = strlen(name) + strlen(SLAVE_LOG_PATH) + 20;
 115
 116         filename = malloc(namelen);
 117         if (!filename) {
 118                 ErrPrint("Failed to create a log file\n");
 119                 free(s_info.filename);
 120                 s_info.filename = NULL;
 121                 return LB_STATUS_ERROR_MEMORY;
 122         }
 123
 124         snprintf(filename, namelen, "%s/%d_%s", SLAVE_LOG_PATH, s_info.file_id, name);
 125
 126         s_info.fp = fopen(filename, "w+");
 127         if (!s_info.fp) {
 128                 ErrPrint("Failed to open log: %s\n", strerror(errno));
 129                 free(s_info.filename);
 130                 s_info.filename = NULL;
 131                 free(filename);
 132                 return LB_STATUS_ERROR_IO;
 133         }
 134
 135         free(filename);
 136         return 0;
 137 }
 138
 139
 140
 141 int critical_log_fini(void)
 142 {
 143         if (s_info.filename) {
 144                 free(s_info.filename);
 145                 s_info.filename = NULL;
 146         }
 147
 148         if (s_info.fp) {
 149                 if (fclose(s_info.fp) != 0) {
 150                         ErrPrint("fclose: %s\n", strerror(errno));
 151                 }
 152                 s_info.fp = NULL;
 153         }
 154
 155         return 0;
 156 }
 157
 158
 159
 160 /* End of a file */