FreeNOS
stat.cpp
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1 /*
2  * Copyright (C) 2009 Niek Linnenbank
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #include <FileSystemClient.h>
19 #include <Log.h>
20 #include "errno.h"
21 #include "limits.h"
22 #include "string.h"
23 #include "sys/stat.h"
24 
25 int stat(const char *path, struct stat *buf)
26 {
27  const FileSystemClient filesystem;
29 
30  DEBUG("path = " << path);
31 
32  // Ask the FileSystem for the information
33  const FileSystem::Result result = filesystem.statFile(path, &st);
34 
35  // Copy information into buf
36  switch (result)
37  {
39  buf->fromFileStat(&st);
40  errno = ESUCCESS;
41  break;
43  errno = ENOENT;
44  break;
45  default:
46  errno = EIO;
47  break;
48  }
49 
50  // Success
51  return errno == ESUCCESS ? 0 : -1;
52 }
stat
The <sys/stat.h> header shall define the stat structure.
Definition: stat.h:176
errno
C int errno
The lvalue errno is used by many functions to return error values.
string.h
FileSystemClient::statFile
FileSystem::Result statFile(const char *path, FileSystem::FileStat *st) const
Retrieve status of a file.
Definition: FileSystemClient.cpp:186
FileSystemClient
FileSystemClient provides a simple interface to a FileSystemServer.
Definition: FileSystemClient.h:42
ESUCCESS
#define ESUCCESS
Reports a success operation.
Definition: errno.h:43
FileSystem::Success
@ Success
Definition: FileSystem.h:54
limits.h
Log.h
DEBUG
#define DEBUG(msg)
Output a debug message to standard output.
Definition: Log.h:89
EIO
#define EIO
I/O error.
Definition: errno.h:130
stat
int stat(const char *path, struct stat *buf)
Get file status.
Definition: stat.cpp:25
stat.h
ENOENT
#define ENOENT
No such file or directory.
Definition: errno.h:178
FileSystemClient.h
FileSystem::FileStat
Contains file information.
Definition: FileSystem.h:113
FileSystem::Result
Result
Result code for filesystem Actions.
Definition: FileSystem.h:52
FileSystem::NotFound
@ NotFound
Definition: FileSystem.h:56
errno.h