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/* Get directory entries. Linux LFS version.
Copyright (C) 1997-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
#include <string.h>
#include <dirent.h>
#include <errno.h>
/* The kernel struct linux_dirent64 matches the 'struct getdents64' type. */
ssize_t
__getdents64 (int fd, char *buf, size_t nbytes)
{
return INLINE_SYSCALL_CALL (getdents64, fd, buf, nbytes);
}
#if _DIRENT_MATCHES_DIRENT64
strong_alias (__getdents64, __getdents)
#else
# include <shlib-compat.h>
# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2)
# include <olddirent.h>
/* kernel definition of as of 3.2. */
struct compat_linux_dirent
{
/* Both d_ino and d_off are compat_ulong_t which are defined in all
architectures as 'u32'. */
uint32_t d_ino;
uint32_t d_off;
unsigned short d_reclen;
char d_name[1];
};
ssize_t
__old_getdents64 (int fd, char *buf, size_t nbytes)
{
ssize_t retval = INLINE_SYSCALL_CALL (getdents, fd, buf, nbytes);
/* The kernel added the d_type value after the name. Change this now. */
if (retval != -1)
{
union
{
struct compat_linux_dirent k;
struct dirent u;
} *kbuf = (void *) buf;
while ((char *) kbuf < buf + retval)
{
char d_type = *((char *) kbuf + kbuf->k.d_reclen - 1);
memmove (kbuf->u.d_name, kbuf->k.d_name,
strlen (kbuf->k.d_name) + 1);
kbuf->u.d_type = d_type;
kbuf = (void *) ((char *) kbuf + kbuf->k.d_reclen);
}
}
return retval;
}
# endif /* SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_2) */
#endif /* _DIRENT_MATCHES_DIRENT64 */
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