#ifdef linux#define DIRENT_ILLEGAL_ACCESS /* for dirent */#endif#define _LARGEFILE64_SOURCE#define _GNU_SOURCE/* * readdir.c * * Copyright (C) 1993 Alain Knaff */#define _LARGEFILE64_SOURCE#define _GNU_SOURCE#include "sysincludes.h"struct dirent *__libc_readdir(DIR * dir);#ifdef oldlinux/* old version of readdir *//* * readdir fills up the buffer with the readdir system call. it also * gives a third parameter (currently ignored, but should be 1) that * can with a future kernel be enhanced to be the number of entries * to be gotten. * * Right now the readdir system call return the number of characters * in the name - in the future it will probably return the number of * entries gotten. No matter - right now we just check for positive: * that will always work (as we know that it cannot be bigger than 1 * in the future: we just asked for one entry). */struct dirent *__libc_readdir(DIR * dir){  int result;  int count = NUMENT;  if (dir->dd_size <= dir->dd_nextloc) {    /* read count of directory entries. For now it should be one. */#if defined(__PIC__) || defined (__pic__)	__asm__ volatile ("pushl %%ebx\n\t"			  "movl %%esi,%%ebx\n\t"			  "int $0x80\n\t"			  "popl %%ebx"	:"=a" (result)	:"0" (SYS_readdir),"S" (dir->dd_fd),	"c" ((long) dir->dd_buf),"d" (count));#else    __asm__("int $0x80"	:"=a" (result)	:"0" (SYS_readdir),"b" (dir->dd_fd),	"c" ((long) dir->dd_buf),"d" (count));#endif    if (result <= 0) {      if (result < 0)	errno = -result;      return NULL;    }    /*     * Right now the readdir system call return the number of     * characters in the name - in the future it will probably return     * the number of entries gotten. No matter - right now we just     * check for positive:     */    dir->dd_size = 1;    dir->dd_nextloc = 0;  }  return &(dir->dd_buf [(dir->dd_nextloc)++]);}#endif#define READDIR readdir#define real_READDIR zlib_real_readdir#define DIRENT dirent#define ADJUST_NAME adjust_name#include "readdir_tmpl.c"#undef READDIR#undef real_READDIR#undef DIRENT#undef ADJUST_NAMEextern struct dirent64 *__readdir64 (DIR *dirp);#define READDIR readdir64#define real_READDIR zlib_real_readdir64#define DIRENT dirent64#define ADJUST_NAME adjust_name64#include "readdir_tmpl.c"#ifdef SYS_getdentsint getdents(int fd, struct dirent *dirp, unsigned int count){  int left;  count=zlib_real_getdents(fd, dirp, count);  if(count<=0)    return count;  zlib_initialise();  if(zlib_mode & ( CM_DISAB | CM_READDIR_COMPR))    return count;  if (zlib_mode & CM_VERBOSE)    fprintf(stderr,"getdents\n");    for(left = count;      left;      left -= dirp->d_reclen,      dirp = (struct dirent *) ((char *)dirp + dirp->d_reclen))    adjust_name(fd, dirp);  return count;}#endif#if 0/* SunOS */struct dirent *readdir(DIR *dirp){  struct dirent *ptr;  char *extension;  int l;  if (!dirp) {    errno = EBADF;    return NULL;   }  if ( dirp->dd_size){    ptr = (struct dirent *) ( dirp->dd_buf + dirp->dd_loc);    dirp->dd_loc += ptr->d_reclen;  }      if ( dirp->dd_size <= dirp->dd_loc ){    dirp->dd_size=getdents( dirp->dd_fd, dirp->dd_buf, dirp->dd_bsize);    if ( dirp->dd_size == 0 )      return 0;    dirp->dd_loc = 0;  }  ptr = (struct dirent *) ( dirp->dd_buf + dirp->dd_loc);  dirp->dd_off = ptr->d_off;  zlib_initialise();  adjust_name(dirp->dd_fd,ptr);    return ptr;}#endif