diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/getdents64.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/getdents64.c | 79 |
1 files changed, 76 insertions, 3 deletions
diff --git a/sysdeps/unix/sysv/linux/getdents64.c b/sysdeps/unix/sysv/linux/getdents64.c index 805917e274..3bde0cf4f0 100644 --- a/sysdeps/unix/sysv/linux/getdents64.c +++ b/sysdeps/unix/sysv/linux/getdents64.c @@ -1,3 +1,76 @@ -#define __GETDENTS __getdents64 -#define DIRENT_TYPE struct dirent64 -#include <sysdeps/unix/sysv/linux/getdents.c> +/* 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 */ |