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 #include "cpp-common/vendor/fmt/format.h"
  12
  13 #include "file.hpp"
  14
  15 void ctf_fs_file_destroy(struct ctf_fs_file *file)
  16 {
  17     if (!file) {
  18         return;
  19     }
  20
  21     if (file->fp) {
  22         BT_CPPLOGD_SPEC(file->logger, "Closing file \"{}\" ({})",
  23                         file->path ? file->path->str : NULL, fmt::ptr(file->fp));
  24
  25         if (fclose(file->fp)) {
  26             BT_CPPLOGE_SPEC(file->logger, "Cannot close file \"{}\": {}",
  27                             file->path ? file->path->str : "NULL", strerror(errno));
  28         }
  29     }
  30
  31     if (file->path) {
  32         g_string_free(file->path, TRUE);
  33     }
  34
  35     delete file;
  36 }
  37
  38 struct ctf_fs_file *ctf_fs_file_create(const bt2c::Logger& parentLogger)
  39 {
  40     ctf_fs_file *file = new ctf_fs_file {parentLogger};
  41     file->path = g_string_new(NULL);
  42     if (!file->path) {
  43         goto error;
  44     }
  45
  46     goto end;
  47
  48 error:
  49     ctf_fs_file_destroy(file);
  50     file = NULL;
  51
  52 end:
  53     return file;
  54 }
  55
  56 int ctf_fs_file_open(struct ctf_fs_file *file, const char *mode)
  57 {
  58     int ret = 0;
  59     struct stat stat;
  60
  61     BT_CPPLOGI_SPEC(file->logger, "Opening file \"{}\" with mode \"{}\"", file->path->str, mode);
  62     file->fp = fopen(file->path->str, mode);
  63     if (!file->fp) {
  64         BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(file->logger, "Cannot open file", ": path={}, mode={}",
  65                                            file->path->str, mode);
  66         goto error;
  67     }
  68
  69     BT_CPPLOGI_SPEC(file->logger, "Opened file: {}", fmt::ptr(file->fp));
  70
  71     if (fstat(fileno(file->fp), &stat)) {
  72         BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(file->logger, "Cannot get file information", ": path={}",
  73                                            file->path->str);
  74         goto error;
  75     }
  76
  77     file->size = stat.st_size;
  78     BT_CPPLOGI_SPEC(file->logger, "File is {} bytes", (intmax_t) file->size);
  79     goto end;
  80
  81 error:
  82     ret = -1;
  83
  84     if (file->fp) {
  85         if (fclose(file->fp)) {
  86             BT_CPPLOGE_SPEC(file->logger, "Cannot close file \"{}\": {}", file->path->str,
  87                             strerror(errno));
  88         }
  89     }
  90
  91 end:
  92     return ret;
  93 }