diff options
Diffstat (limited to 'libc/arch-mips64/bionic/getdents.cpp')
| -rw-r--r-- | libc/arch-mips64/bionic/getdents.cpp | 97 |
1 files changed, 0 insertions, 97 deletions
diff --git a/libc/arch-mips64/bionic/getdents.cpp b/libc/arch-mips64/bionic/getdents.cpp deleted file mode 100644 index 66a61ec..0000000 --- a/libc/arch-mips64/bionic/getdents.cpp +++ /dev/null @@ -1,97 +0,0 @@ -/* - * Copyright (C) 2014 The Android Open Source Project - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED - * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* - * The MIPS64 getdents64() system call is only present in 3.10+ kernels. - * If the getdents64() system call is not available fall back to using - * getdents() and modify the result to be compatible with getdents64(). - */ - -#include <dirent.h> - -#include <errno.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - - -/* The mips_getdents type is 64bit clean */ -struct mips_dirent { - uint64_t d_ino; /* Inode number */ - uint64_t d_off; /* Offset to next mips_dirent */ - uint16_t d_reclen; /* Length of this mips_dirent */ - char d_name[]; /* Filename (null-terminated) */ - /* length is actually (d_reclen - 2 - - offsetof(struct mips_dirent, d_name) */ - // char pad; /* Zero padding byte */ - // char d_type; /* File type (only since Linux 2.6.4; offset is (d_reclen - 1)) */ -}; - -extern "C" int __getdents64(unsigned int fd, struct dirent *dirp, unsigned int count); -extern "C" int __getdents(unsigned int fd, struct mips_dirent *dirp, unsigned int count); -int getdents(unsigned int fd, struct dirent *dirp, unsigned int count) -{ - int r; - int oerrno = errno; - - /* Use getdents64() if it is available */ - r = __getdents64(fd, dirp, count); - if (r >= 0 || errno != ENOSYS) - return r; - - /* Fallback to getdents() */ - errno = oerrno; - r = __getdents(fd, (struct mips_dirent *)dirp, count); - if (r > 0) { - char *p; - char type; - union dirents { - struct mips_dirent m; - struct dirent d; - } *u; - - p = (char *)dirp; - do { - u = (union dirents *)p; - - /* This should not happen, but just in case... */ - if (p + u->m.d_reclen > (char *)dirp + r) - break; - - /* shuffle the dirent */ - type = *(p + u->m.d_reclen - 1); - memmove(u->d.d_name, u->m.d_name, - u->m.d_reclen - 2 - offsetof(struct mips_dirent, d_name) + 1); - u->d.d_type = type; - - p += u->m.d_reclen; - } while (p < (char *)dirp + r); - } - return r; -} |