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Create directory in C

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# 1  
Old 08-05-2012
Create directory in C
Hello,

i try to create dir in C like that:
Code:
mkdir("/home/chercheur/1");

but when i try to open this directory: i have this message
Code:
Vous n'avez pas les permissions nécessaires pour afficher le contenu de «*1*».

have you an idea please
Thank you.

Moderator's Comments:
Mod Comment edit by bakunin: please use [code]..[/code]-tags for code, instead of [quote]..[/quote]-tags. Use code-tags also for error messages or other text output copied from a terminal. Thank you for your consideration.

Furthermore, it would help me (and probably most other users too) if you could translate the error message, as i do not understand french. You probably could set your language environment to "C" to have messages in english, for instance (might have to change this slightly to accomodate to your system):

Code:
(export LANG=C ; export LC_MESSAGES=C ; /your/program)
Last edited by bakunin; 08-05-2012 at 02:39 PM..
# 2  
Old 08-05-2012
Quote:
Vous n'avez pas les permissions nécessaires pour afficher le contenu de «*1*».
Despite the best efforts of my teachers throughout high school, I cannot speak French. Smilie If you want anyone to understand this errror, translating it first would be a good idea.

I think I can guess what happened anyway, though. From man 2 mkdir:

Code:
MKDIR(2)                   Linux Programmer's Manual                  MKDIR(2)



NAME
       mkdir - create a directory

SYNOPSIS
       #include <sys/stat.h>
       #include <sys/types.h>

       int mkdir(const char *pathname, mode_t mode);

...

You didn't put file permissions into your mkdir call, thus created your directory with crazy permissions.

Try mkdir("/path/to/whatever", 0750); which should make it readable and writable to you, readable to your default group, and not available to anyone else.
This User Gave Thanks to Corona688 For This Post:
chercheur857
# 3  
Old 08-06-2012
Quote:
Originally Posted by chercheur857
i try to create dir in C like that:
Code:
mkdir("/home/chercheur/1");

but when i try to open this directory: i have this message
Code:
Vous n'avez pas les permissions nécessaires pour afficher le contenu de «*1*».

The fact that the code compiled means you omitted the necessary headers. You should check your man page and include them.

Also, mkdir's mode argument doesn't specify the final mode, merely the least restrictive mode allowed. If you require a specific mode for your newly-created directory, you must account for the process' creation mask. Either call chmod after mkdir or call umask before mkdir.

Regards,
Alister
# 4  
Old 08-22-2012
You can crate directory using below code,
Code:
#include<iostream.h>
 
#include<sys/stat.h>
 
#include<sys/types.h>
 
usingnamespace std;
 
 
main()
 
{
 
 
if(mkdir("pathname",0777)==-1)//creating a directory
 
{
 
        cerr<<"Error :  "<<strerror(errno)<<endl;
 
exit(1);
 
}
 
 
}

Moderator's Comments:
Mod Comment Thanks a lot for your contribution, but please use code tags next time for your code and data. Also refrain from overly formatting since it is awful to edit such a post if necessary, thanks!
Last edited by zaxxon; 08-22-2012 at 11:04 AM.. Reason: code tags
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