opendir failure

[IGNORE THIS POST]

In my previous thread (http://cboard.cprogramming.com/showthread.php?t=104964) I was trying to find out why opendir would sometimes fail in a script which recurses thru a directory tree. No one could tell me so I wrote a simple test:

Code:

---

#include <stdio.h>
#include <string.h>
#include <dirent.h>
#include <errno.h>

int main (int argc, char *argv[]) {
        struct dirent *dcon;
        DIR *dir = opendir (argv[1]);
        if (dir == NULL) {
                printf ("&#37;s: %s\n", argv[1], strerror(errno));
                exit(1);
        }
           
        while (dcon = readdir (dir)) {
                puts (dcon->d_name);
        }     
}

---

Low and behold, this fails on every fourth or five directory i try it on, regardless of the pathname, length, ownership, or permissions (the error is "No such file or directory"). Since zacs7 tested the other script and got the same result, it can't be filesystem corruption...however we both use linux/GNU and (I presume) the GNU C libraries.

Can anyone explain the problem?

So, just to make sure we're on the same page...you're running this test program repeatedly with different directories passed as command line arguments and it's failing every four or five times?

Also, what actual value are you passing for argv[1]
Or are you passing an argument at all?

You should check your return value of your opendir(). Also main() should return an int for correct coding practices.

Opendir() will open upto at least OPEN_MAX files and directories.

http://www.opengroup.org/onlinepubs/...h/opendir.html

and i'm sorry sorry sorry

Never take MK27 serious again.

That's odd, my man page [2007-07-30] doesn't mention that (Which I thought was the problem).