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->path) {
  22         g_string_free(file->path, TRUE);
  23     }
  24
  25     delete file;
  26 }
  27
  28 void ctf_fs_file_deleter::operator()(ctf_fs_file * const file) noexcept
  29 {
  30     ctf_fs_file_destroy(file);
  31 }
  32
  33 ctf_fs_file::UP ctf_fs_file_create(const bt2c::Logger& parentLogger)
  34 {
  35     ctf_fs_file::UP file {new ctf_fs_file {parentLogger}};
  36
  37     file->path = g_string_new(NULL);
  38     if (!file->path) {
  39         goto error;
  40     }
  41
  42     goto end;
  43
  44 error:
  45     file.reset();
  46
  47 end:
  48     return file;
  49 }
  50
  51 int ctf_fs_file_open(struct ctf_fs_file *file, const char *mode)
  52 {
  53     int ret = 0;
  54     struct stat stat;
  55
  56     BT_CPPLOGI_SPEC(file->logger, "Opening file \"{}\" with mode \"{}\"", file->path->str, mode);
  57     file->fp.reset(fopen(file->path->str, mode));
  58     if (!file->fp) {
  59         BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(file->logger, "Cannot open file", ": path={}, mode={}",
  60                                            file->path->str, mode);
  61         goto error;
  62     }
  63
  64     BT_CPPLOGI_SPEC(file->logger, "Opened file: {}", fmt::ptr(file->fp));
  65
  66     if (fstat(fileno(file->fp.get()), &stat)) {
  67         BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(file->logger, "Cannot get file information", ": path={}",
  68                                            file->path->str);
  69         goto error;
  70     }
  71
  72     file->size = stat.st_size;
  73     BT_CPPLOGI_SPEC(file->logger, "File is {} bytes", (intmax_t) file->size);
  74     goto end;
  75
  76 error:
  77     ret = -1;
  78
  79 end:
  80     return ret;
  81 }