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 #include <pthread.h>
  27
  28 #include <dlog.h>
  29 #include <Eina.h>
  30 #if defined(HAVE_LIVEBOX)
  31 #include <dynamicbox_errno.h>
  32 #include <dynamicbox_conf.h>
  33 #else
  34 #include "lite-errno.h"
  35 #endif
  36
  37 #include "conf.h"
  38 #include "debug.h"
  39 #include "util.h"
  40 #include "critical_log.h"
  41
  42 static struct {
  43         FILE *fp;
  44         int file_id;
  45         int nr_of_lines;
  46         char *filename;
  47         pthread_mutex_t cri_lock;
  48 } s_info = {
  49         .fp = NULL,
  50         .file_id = 0,
  51         .nr_of_lines = 0,
  52         .filename = NULL,
  53         .cri_lock = PTHREAD_MUTEX_INITIALIZER,
  54 };
  55
  56
  57
  58 static inline void rotate_log(void)
  59 {
  60         char *filename;
  61         int namelen;
  62
  63         if (s_info.nr_of_lines < DYNAMICBOX_CONF_MAX_LOG_LINE) {
  64                 return;
  65         }
  66
  67         s_info.file_id = (s_info.file_id + 1) % DYNAMICBOX_CONF_MAX_LOG_FILE;
  68
  69         namelen = strlen(s_info.filename) + strlen(DYNAMICBOX_CONF_LOG_PATH) + 30;
  70         filename = malloc(namelen);
  71         if (filename) {
  72                 snprintf(filename, namelen, "%s/%d_%s.%d", DYNAMICBOX_CONF_LOG_PATH, s_info.file_id, s_info.filename, getpid());
  73
  74                 if (s_info.fp) {
  75                         if (fclose(s_info.fp) != 0) {
  76                                 ErrPrint("fclose: %s\n", strerror(errno));
  77                         }
  78                 }
  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
  85                 DbgFree(filename);
  86         }
  87
  88         s_info.nr_of_lines = 0;
  89 }
  90
  91
  92
  93 HAPI int critical_log(const char *func, int line, const char *fmt, ...)
  94 {
  95         va_list ap;
  96         int ret;
  97
  98         if (!s_info.fp) {
  99                 return DBOX_STATUS_ERROR_IO_ERROR;
 100         }
 101
 102         CRITICAL_SECTION_BEGIN(&s_info.cri_lock);
 103
 104         fprintf(s_info.fp, "%lf [%s:%d] ", util_timestamp(), util_basename((char *)func), line);
 105
 106         va_start(ap, fmt);
 107         ret = vfprintf(s_info.fp, fmt, ap);
 108         va_end(ap);
 109
 110         fflush(s_info.fp);
 111
 112         s_info.nr_of_lines++;
 113         rotate_log();
 114
 115         CRITICAL_SECTION_END(&s_info.cri_lock);
 116         return ret;
 117 }
 118
 119
 120
 121 HAPI int critical_log_init(const char *name)
 122 {
 123         int namelen;
 124         char *filename;
 125
 126         if (s_info.fp) {
 127                 return DBOX_STATUS_ERROR_NONE;
 128         }
 129
 130         s_info.filename = strdup(name);
 131         if (!s_info.filename) {
 132                 ErrPrint("Failed to create a log file\n");
 133                 return DBOX_STATUS_ERROR_OUT_OF_MEMORY;
 134         }
 135
 136         namelen = strlen(name) + strlen(DYNAMICBOX_CONF_LOG_PATH) + 30;
 137
 138         filename = malloc(namelen);
 139         if (!filename) {
 140                 ErrPrint("Failed to create a log file\n");
 141                 DbgFree(s_info.filename);
 142                 s_info.filename = NULL;
 143                 return DBOX_STATUS_ERROR_OUT_OF_MEMORY;
 144         }
 145
 146         snprintf(filename, namelen, "%s/%d_%s.%d", DYNAMICBOX_CONF_LOG_PATH, s_info.file_id, name, getpid());
 147
 148         s_info.fp = fopen(filename, "w+");
 149         if (!s_info.fp) {
 150                 ErrPrint("Failed to open log: %s\n", strerror(errno));
 151                 DbgFree(s_info.filename);
 152                 s_info.filename = NULL;
 153                 DbgFree(filename);
 154                 return DBOX_STATUS_ERROR_IO_ERROR;
 155         }
 156
 157         DbgFree(filename);
 158         return DBOX_STATUS_ERROR_NONE;
 159 }
 160
 161
 162
 163 HAPI void critical_log_fini(void)
 164 {
 165         if (s_info.filename) {
 166                 DbgFree(s_info.filename);
 167                 s_info.filename = NULL;
 168         }
 169
 170         if (s_info.fp) {
 171                 if (fclose(s_info.fp) != 0) {
 172                         ErrPrint("fclose: %s\n", strerror(errno));
 173                 }
 174                 s_info.fp = NULL;
 175         }
 176 }
 177
 178
 179
 180 /* End of a file */