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Full Discussion: Error code checking
Top Forums Shell Programming and Scripting Error code checking Post 302132899 by jepombar on Monday 20th of August 2007 09:45:27 PM
Old 08-20-2007
Error code checking

I'm trying to create a directory from my Perl script. Only if the there was an error I want to let the user know about it. So if the folder exists is ok.

This is what I think should work:

`mkdir log 2>/dev/null`;
if($? == 0 || $? == errorCodeForFileExists)
{ everyting is fine }
else
{ print "Error creating log directory. Check you file permissions\n";
exit(0) }

The problem is that I'm getting the same error code for both File exists and Permission Denied.

Any ideas?
 

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mkpath_np(3)						   BSD Library Functions Manual 					      mkpath_np(3)

NAME
mkpath_np -- Auxiliary routine for efficiently creating paths SYNOPSIS
#include <unistd.h> int mkpath_np(const char * path, mode_t omode); DESCRIPTION
This routine allows the caller to create a path, including intermediate directories. It is equivalent to calling mkdir(1) with the -p com- mand line argument. Intermediate directories are created with permission bits of rwxrwxrwx (0777) as modified by the current umask, plus write and search permis- sion for the owner. The leaf directory is created with permission bits of omode as modified by the current umask. RETURN VALUES
A 0 return value indicates success. If an error occurs, the return value is a non-zero error code. Note that EEXIST is returned iff the leaf directory already exists and is a directory, so under certain circumstances, this error value may not indicate a failure state. This routine does NOT modify errno. ERRORS
Any error code that can be returned by mkdir(2) can be returned by mkpath_np(), but mkpath_np() will return the error code rather than set- ting errno. [ENOTDIR] A component of the path is not a directory (in contrast to mkdir(2) which returns this based on the path prefix rather than the path). [EEXIST] The path already exists and is a directory. HISTORY
This function first appeared in iOS 5.0. SEE ALSO
mkdir(1), chmod(2), mkdir(2) Mac OS X July 13, 2011 Mac OS X
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