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 #include "fs.hpp"
  15
  16 void ctf_fs_file_destroy(struct ctf_fs_file *file)
  17 {
  18     if (!file) {
  19         return;
  20     }
  21
  22     if (file->fp) {
  23         BT_CPPLOGD_SPEC(file->logger, "Closing file \"{}\" ({})",
  24                         file->path ? file->path->str : NULL, fmt::ptr(file->fp));
  25
  26         if (fclose(file->fp)) {
  27             BT_CPPLOGE_SPEC(file->logger, "Cannot close file \"{}\": {}",
  28                             file->path ? file->path->str : "NULL", strerror(errno));
  29         }
  30     }
  31
  32     if (file->path) {
  33         g_string_free(file->path, TRUE);
  34     }
  35
  36     delete file;
  37 }
  38
  39 struct ctf_fs_file *ctf_fs_file_create(const bt2c::Logger& parentLogger)
  40 {
  41     ctf_fs_file *file = new ctf_fs_file {parentLogger};
  42     file->path = g_string_new(NULL);
  43     if (!file->path) {
  44         goto error;
  45     }
  46
  47     goto end;
  48
  49 error:
  50     ctf_fs_file_destroy(file);
  51     file = NULL;
  52
  53 end:
  54     return file;
  55 }
  56
  57 int ctf_fs_file_open(struct ctf_fs_file *file, const char *mode)
  58 {
  59     int ret = 0;
  60     struct stat stat;
  61
  62     BT_CPPLOGI_SPEC(file->logger, "Opening file \"{}\" with mode \"{}\"", file->path->str, mode);
  63     file->fp = fopen(file->path->str, mode);
  64     if (!file->fp) {
  65         BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(file->logger, "Cannot open file", ": path={}, mode={}",
  66                                            file->path->str, mode);
  67         goto error;
  68     }
  69
  70     BT_CPPLOGI_SPEC(file->logger, "Opened file: {}", fmt::ptr(file->fp));
  71
  72     if (fstat(fileno(file->fp), &stat)) {
  73         BT_CPPLOGE_ERRNO_APPEND_CAUSE_SPEC(file->logger, "Cannot get file information", ": path={}",
  74                                            file->path->str);
  75         goto error;
  76     }
  77
  78     file->size = stat.st_size;
  79     BT_CPPLOGI_SPEC(file->logger, "File is {} bytes", (intmax_t) file->size);
  80     goto end;
  81
  82 error:
  83     ret = -1;
  84
  85     if (file->fp) {
  86         if (fclose(file->fp)) {
  87             BT_CPPLOGE_SPEC(file->logger, "Cannot close file \"{}\": {}", file->path->str,
  88                             strerror(errno));
  89         }
  90     }
  91
  92 end:
  93     return ret;
  94 }