Mauro,
After a quick scan of your email, I can’t see anything wrong.
I’ll try to reproduce it this afternoon and get back to you with my results.
Sorry, but I have to ask the following stupid questions.
1) What happens if you enter “type fs0:\file.txt” at a (U)Efi Shell prompt?
2) Have you tried checking errno or EfiErrno for additional information
after the fopen() failed?
Daryl McDaniel
From: Mauro Faccenda [mailto:facce...@gmail.com]
Sent: Wednesday, July 24, 2013 10:39 AM
To: edk2-devel@lists.sourceforge.net
Subject: [edk2] simple file operations using stdio.h
Hi all,
I am sorry to ask such a simple question and I swear before asking to this list
I've searched for some solutions and couldn't fine one that worked for me.
I need to make some basic file operations using the fopen and fclose. So, my
code is this simple:
--
#include <stdio.h>
#include <unistd.h>
int main(int argc, char *argv[])
{
char currentdir[1024];
if(getcwd(currentdir, sizeof(currentdir)) != NULL) printf("Working dir:
'%s'\n");
if(fopen("file.txt", "rb") == NULL) printf("Couldn't open 'file.txt'
file\n");
if(fopen("fs0:\\file.txt", "rb") == NULL) printf("Couldn't open
'fs0:\\file.txt' file\n");
return(0);
}
--
And the .inf:
--
[Defines]
INF_VERSION = 0x00010006
BASE_NAME = Test
FILE_GUID = 08f6ab0d-57ca-4759-b217-47ca02a368c5
MODULE_TYPE = UEFI_APPLICATION
VERSION_STRING = 0.1
ENTRY_POINT = ShellCEntryLib
[Sources]
Test.c
[Packages]
StdLib/StdLib.dec
MdePkg/MdePkg.dec
[LibraryClasses]
DevShell
LibC
ShellCEntryLib
--
And I run it after typing 'fs0:' to have a working dir.
The program output is:
--
Working dir: 'fs0:\'
Couldn't open 'file.txt' file
Couldn't open 'fs0:\file.txt' file
--
Is it supposed to work? If so, how can I find out why it isn't?
Thanks in advance,
Mauro
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