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#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dirent.h>
#include "dirstream.h"
extern int getdents __P ((unsigned int fd, struct dirent *dirp, unsigned int count));
struct dirent *readdir(DIR * dir)
{
int result;
struct dirent *de;
if (!dir) {
__set_errno(EBADF);
return NULL;
}
/* Are we running an old kernel? */
if (dir->dd_getdents == no_getdents) {
abort();
}
if (dir->dd_size <= dir->dd_nextloc) {
/* read dir->dd_max bytes of directory entries. */
result = getdents(dir->dd_fd, dir->dd_buf, dir->dd_max);
/* We assume we have getdents (). */
dir->dd_getdents = have_getdents;
if (result <= 0) {
result = -result;
if (result > 0) {
/* Are we right? */
if (result == ENOSYS) {
dir->dd_getdents = no_getdents;
abort();
}
__set_errno(result);
}
return NULL;
}
dir->dd_size = result;
dir->dd_nextloc = 0;
}
de = (struct dirent *) (((char *) dir->dd_buf) + dir->dd_nextloc);
/* Am I right? H.J. */
dir->dd_nextloc += de->d_reclen;
/* We have to save the next offset here. */
dir->dd_nextoff = de->d_off;
return de;
}
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