src/plugins/ctf/fs-src/file.cpp

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright 2016 Philippe Proulx <pproulx@efficios.com>
   5  */
   6
   7 #include <glib.h>
   8 #include <stdio.h>
   9 #include <sys/stat.h>
  10
  11 #define BT_COMP_LOG_SELF_COMP (file->self_comp)
  12 #define BT_LOG_OUTPUT_LEVEL   (file->log_level)
  13 #define BT_LOG_TAG            "PLUGIN/SRC.CTF.FS/FILE"
  14 #include "logging/comp-logging.h"
  15
  16 #include "file.hpp"
  17 #include "fs.hpp"
  18
  19 void ctf_fs_file_destroy(struct ctf_fs_file *file)
  20 {
  21     if (!file) {
  22         return;
  23     }
  24
  25     if (file->fp) {
  26         BT_COMP_LOGD("Closing file \"%s\" (%p)", file->path ? file->path->str : NULL, file->fp);
  27
  28         if (fclose(file->fp)) {
  29             BT_COMP_LOGE("Cannot close file \"%s\": %s", file->path ? file->path->str : "NULL",
  30                          strerror(errno));
  31         }
  32     }
  33
  34     if (file->path) {
  35         g_string_free(file->path, TRUE);
  36     }
  37
  38     delete file;
  39 }
  40
  41 struct ctf_fs_file *ctf_fs_file_create(bt_logging_level log_level, bt_self_component *self_comp)
  42 {
  43     ctf_fs_file *file = new ctf_fs_file;
  44     file->log_level = log_level;
  45     file->self_comp = self_comp;
  46     file->path = g_string_new(NULL);
  47     if (!file->path) {
  48         goto error;
  49     }
  50
  51     goto end;
  52
  53 error:
  54     ctf_fs_file_destroy(file);
  55     file = NULL;
  56
  57 end:
  58     return file;
  59 }
  60
  61 int ctf_fs_file_open(struct ctf_fs_file *file, const char *mode)
  62 {
  63     int ret = 0;
  64     struct stat stat;
  65
  66     BT_COMP_LOGI("Opening file \"%s\" with mode \"%s\"", file->path->str, mode);
  67     file->fp = fopen(file->path->str, mode);
  68     if (!file->fp) {
  69         BT_COMP_LOGE_APPEND_CAUSE_ERRNO(file->self_comp, "Cannot open file", ": path=%s, mode=%s",
  70                                         file->path->str, mode);
  71         goto error;
  72     }
  73
  74     BT_COMP_LOGI("Opened file: %p", file->fp);
  75
  76     if (fstat(fileno(file->fp), &stat)) {
  77         BT_COMP_LOGE_APPEND_CAUSE_ERRNO(file->self_comp, "Cannot get file information", ": path=%s",
  78                                         file->path->str);
  79         goto error;
  80     }
  81
  82     file->size = stat.st_size;
  83     BT_COMP_LOGI("File is %jd bytes", (intmax_t) file->size);
  84     goto end;
  85
  86 error:
  87     ret = -1;
  88
  89     if (file->fp) {
  90         if (fclose(file->fp)) {
  91             BT_COMP_LOGE("Cannot close file \"%s\": %s", file->path->str, strerror(errno));
  92         }
  93     }
  94
  95 end:
  96     return ret;
  97 }