Re: Permission Denied - Help Requested

At 03:49 PM 3/29/2011, Al wrote:

On 3/29/2011 3:06 PM, Ethan Rosenberg wrote:

At 01:40 PM 3/29/2011, Adam Richardson wrote:

On Mon, Mar 28, 2011 at 11:43 PM, Ethan Rosenberg <ethros@earthlink.net>wrote:

At 11:14 PM 3/28/2011, Adam Richardson wrote:

On Mon, Mar 28, 2011 at 11:03 PM, Ethan Rosenberg <<mailto: ethros@earthlink.net>ethros@earthlink.net> wrote: At 01:32 AM 3/28/2011, Hans �hlin wrote: Do you have SELinux installed? 2011/3/28 Ethan Rosenberg <<mailto:ethros@earthlink.net> ethros@earthlink.net>:

Dear List - Thanks for all your help in the past. Â Here is another one... I am getting a Permission Denied" message when I try to run a PHP

script. Â I

just changed the mode on the directory and the files to 777. Â This

problem

arose when I changed the permissions. Â I thought I was solving a

problem,

because I could not open a file for

writing. Â I was not receiving error

messages, but no file was created. Help and advice, please. Ethan Rosenberg

**********************************************  Hans Ã�hlin   Tel: +46761488019   icq: 275232967   <http://www.kronan-net.com/>http://www.kronan-net.com/  Â

irc://<http://irc.freenode.net:6667>irc.freenode.net:6667 - TheCoin

********************************************** Hans - Sorry, I did not include my signature, which includes all the requested information. Here it is.... Ethan ========== MySQL 5.1 PHP 5.3.3-6 Linux [Debian (sid)] The problem persists. I cannot write to a file from PHP. Any more suggestions? Thanks. Ethan Hi Ethan, Are you using suPHP or suExec? I believe the server chokes on 777 permissions in those cases. Have you checked the permissions in the

command line (sorry for the basic

question, but just making sure I know what you've already done?) Also, can we see some of the code you're using to handle the file processing? Thanks, Adam -- Nephtali: A simple, flexible, fast, and security-focused PHP framework <http://nephtaliproject.com>http://nephtaliproject.com

+++++++++ Adam - Thanks. 1] Pardon my ignorance but I do not understand this - Are you using suPHP

or suExec?

suPHP and suExec are two modules that allow PHP to run with the permissions of the user, making it easy to write files to disk. However, suPHP (and I believe suExec, but I can't remember for sure) does not like 777 permissions.

2] I changed the permissions to 755 and the "Permission Denied" message went away.

Check!

3] Have you checked the permissions in the command line? Yes

Check!

4] Here are some code snippets: $fptr1 = fopen("chessboard", "r+"); //this works $fptr2 = fopen('chessboard', 'w'); //this deletes the file, as it should for($i = 0; $i <8; $i++) { for ($j = 0; $j < 8; $j++) fprinf($fptr2, "%s ", $results[$i][$j]); fprinf($fptr2, "\n"); } //this never writes, so I am left with an empty file

Can you try a simplified form that checks for success along the way? How about something like the code below to see how far it gets (I haven't tested, but it should be close): <?php // let's make sure you see the E_WARNING errors if present for file functions error_reporting(-1); // set var for later $cost = 120.89; if (!($fp = fopen("test.txt", 'w'))) { echo "Can't open or create file!"; } else if (!($len = fprintf($fp, "In the year 3000, a Coke will cost %01.2f, with tax.", $cost))) { echo "Can't write to file!"; } else if (!(fclose($fp))) { echo "Can't properly close file!"; } ?> What do you see if you run this? Adam -- Nephtali: A simple, flexible, fast, and security-focused PHP framework http://nephtaliproject.com

+++++++ Thanks. What do you see if you run this? "Can't open or create file!" Ethan

Run this. Make certain this script and test.txt are in the same dir. If not, use full path to your file. clearstatcache(); $array= stat("test.txt"); print_r($array);//This will tell you what's going on. Incidentally, consider using file_get_contents() and file_put_contents() Much easier to use and faster. +++++++++++++

Al - Thanks. Here is what I ran and the output. I do not know enough PHP to interpret the output. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" <http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html> <body> <?php error_reporting(1); clearstatcache(); $array= stat("test.txt"); print_r($array);//This will tell you what's going on. // Output /* Array ( [0] => 2050 [1] => 876877 [2] => 33188 [3] => 1 [4] => 1001 [5] => 1001 [6] => 0 [7] => 30 [8] => 1301430589 [9] => 1301430589 [10] => 1301430589 [11] => 4096 [12] => 8 [dev] => 2050 [ino] => 876877 [mode] => 33188 [nlink] => 1 [uid] => 1001 [gid] => 1001 [rdev] => 0 [size] => 30 [atime] => 1301430589 [mtime] => 1301430589 [ctime] => 1301430589 [blksize] => 4096 [blocks] => 8 ) */ ?> </body> </html> Help and advice, please. Ethan