src/critical_log.c

   1 /*
   2  * Copyright 2013  Samsung Electronics Co., Ltd
   3  *
   4  * Licensed under the Flora License, Version 1.0 (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         gettimeofday(&tv, NULL);
  59         fprintf(s_info.fp, "%d %lu.%lu [%s:%d] ", getpid(), tv.tv_sec, tv.tv_usec, util_basename((char *)func), line);
  60
  61         va_start(ap, fmt);
  62         ret = vfprintf(s_info.fp, fmt, ap);
  63         va_end(ap);
  64
  65         s_info.nr_of_lines++;
  66         if (s_info.nr_of_lines == MAX_LOG_LINE) {
  67                 char *filename;
  68                 int namelen;
  69
  70                 s_info.file_id = (s_info.file_id + 1) % MAX_LOG_FILE;
  71
  72                 namelen = strlen(s_info.filename) + strlen(SLAVE_LOG_PATH) + 20;
  73                 filename = malloc(namelen);
  74                 if (filename) {
  75                         snprintf(filename, namelen, "%s/%d_%s", SLAVE_LOG_PATH, s_info.file_id, s_info.filename);
  76
  77                         if (s_info.fp)
  78                                 fclose(s_info.fp);
  79
  80                         s_info.fp = fopen(filename, "w+");
  81                         if (!s_info.fp)
  82                                 ErrPrint("Failed to open a file: %s\n", filename);
  83
  84                         free(filename);
  85                 }
  86
  87                 s_info.nr_of_lines = 0;
  88         }
  89         return ret;
  90 }
  91
  92
  93
  94 int critical_log_init(const char *name)
  95 {
  96         int namelen;
  97         char *filename;
  98
  99         if (s_info.fp)
 100                 return 0;
 101
 102         s_info.filename = strdup(name);
 103         if (!s_info.filename) {
 104                 ErrPrint("Failed to create a log file\n");
 105                 return LB_STATUS_ERROR_MEMORY;
 106         }
 107
 108         namelen = strlen(name) + strlen(SLAVE_LOG_PATH) + 20;
 109
 110         filename = malloc(namelen);
 111         if (!filename) {
 112                 ErrPrint("Failed to create a log file\n");
 113                 free(s_info.filename);
 114                 s_info.filename = NULL;
 115                 return LB_STATUS_ERROR_MEMORY;
 116         }
 117
 118         snprintf(filename, namelen, "%s/%d_%s", SLAVE_LOG_PATH, s_info.file_id, name);
 119
 120         s_info.fp = fopen(filename, "w+");
 121         if (!s_info.fp) {
 122                 ErrPrint("Failed to open log: %s\n", strerror(errno));
 123                 free(s_info.filename);
 124                 s_info.filename = NULL;
 125                 free(filename);
 126                 return LB_STATUS_ERROR_IO;
 127         }
 128
 129         free(filename);
 130         return 0;
 131 }
 132
 133
 134
 135 int critical_log_fini(void)
 136 {
 137         if (s_info.filename) {
 138                 free(s_info.filename);
 139                 s_info.filename = NULL;
 140         }
 141
 142         if (s_info.fp) {
 143                 fclose(s_info.fp);
 144                 s_info.fp = NULL;
 145         }
 146
 147         return 0;
 148 }
 149
 150
 151
 152 /* End of a file */