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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)
{
ssize_t bytes;
struct dirent *de;
if (!dir) {
__set_errno(EBADF);
return NULL;
}
#ifdef _POSIX_THREADS
pthread_mutex_lock(dir->dd_lock);
#endif
do {
if (dir->dd_size <= dir->dd_nextloc) {
/* read dir->dd_max bytes of directory entries. */
bytes = getdents(dir->dd_fd, dir->dd_buf, dir->dd_max);
if (bytes <= 0) {
de = NULL;
goto all_done;
}
dir->dd_size = bytes;
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;
/* Skip deleted files. */
} while (de->d_ino == 0);
all_done:
#ifdef _POSIX_THREADS
pthread_mutex_unlock(dir->dd_lock);
#endif
return de;
}
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