The following simple piece of code reads all of the entries in a directory:
if ( opendir(DIR,$somedir) ) {
@x = readdir(DIR);
closedir(DIR);
}
else {
# Process an opendir error
}
Clearly it might happen that the opendir works just fine, but the readdir fails due to, e.g., a hardware or network error. My question is: How can the program recognize when the readdir failed?
I have looked through all of the Perl docs I can find, searched in PerlMonks, and searched with Google.
This is not just a hypothetical question. I have a program that runs periodically and reads over 10,000,000 directories. Every once in a while, it fails to find all of some directory's entries that I know are there.
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