Hi All,
I'm having this problems, a couple of days ago, one of the servers started
to have some problems with readdir, I've written this code to test:
#include <sys/types.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
int thruDirectories (char *dirName) {
DIR *directory;
struct dirent *fileData;
char newdirname[5000] = "";
size_t leng;
directory = opendir(dirName);
while(fileData = readdir(directory)) {
if(fileData->d_name[0] == '.') {
continue;
}
if(fileData->d_type == 4) {
leng = strlen(dirName) + strlen(fileData->d_name) + 2;
newdirname[0]='\0';
strcat(newdirname,dirName);
strcat(newdirname,"/");
strcat(newdirname,fileData->d_name);
fprintf(stderr,"dirname is %s\n" ,newdirname);
thruDirectories(newdirname);
continue;
}
fprintf(stderr,"%s/%s\n",dirName,fileData->d_name );
}
closedir(directory);
return 0;
}
main() {
thruDirectories("Desktop");
}
this code is supposed to go through a directory, parse it's print it's
content, if it's a directory, recursively parse it again.
now if you are root, everything works fine.
any other user, some of the subdirectories would not get parsed due to that
readdir is returning NULL the first time it gets in (it even doesn't get the
'.' and '..' folders).
and yes I've checked the files permissions, ulimit, glibc, and now I'm out
of ideas. and the problem only started a couple of days ago, it was running
fine before. running the original code on other servers doesn't have a
problem
anybody have a clue ... please help me out. as now the only solution I have
is to back up the server, and reinstall Linux, and I'm hoping not to reach
that point.
--
Ala'a A. Ibrahim
http://guru.alaa-ibrahim.com/
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