我正在处理auto-apt的后继者，这是一个记录open，access和stat文件请求的脚本（例如在{{ 1}}}脚本）并将它们与configure索引中可用的已安装文件和文件列表进行比较。这个重新编码已在原始文件中完成，该文档未经文档记录多年（并且作者无法访问），并使用Contents.gz中使用的共享库覆盖LD_PRELOAD，open，access ，stat，open64等
我开始学习如何将stat64与https://rafalcieslak.wordpress.com/2013/04/02/dynamic-linker-tricks-using-ld_preload-to-cheat-inject-features-and-investigate-programs/一起使用。我不明白原作。
虽然对于某些程序，例如LD_PRELOAD，但没有问题，我在GCC 7.2的gnome-calculator开始时遇到permission denied错误，而bison 3.0 .4，例如
configure（我知道必须使用checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking target system type... x86_64-pc-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln works... yes
checking whether ln -s works... yes
checking for a sed that does not truncate output... /bin/sed
checking for gawk... gawk
checking for libatomic support... yes
checking for libcilkrts support... yes
checking for libitm support... yes
checking for libsanitizer support... yes
checking for libvtv support... yes
checking for libmpx support... yes
checking for libhsail-rt support... yes
checking for gcc... gcc
./configure: line 4297: conftest.err: Permission denied
./configure: line 4297: conftest.err: Permission denied
./configure: line 4297: conftest.err: Permission denied
cat: confdefs.h: Permission denied
checking for C compiler default output file name...
sed: can't read conftest.c: Permission denied
configure: error: in `/home/richter/sources/gcc-7.2.0':
configure: error: C compiler cannot create executables
See `config.log' for more details.
cat: confdefs.h: Permission denied
中的脚本下载prequisistes，但这不应该影响此问题，而GCC似乎是复制的好例子。
根据我创建的引用博客文章
contrib在运行/*
* Experiments with LD_PRELOAD following
* https://web.archive.org/web/20171226024326/https://rafalcieslak.wordpress.com/2013/04/02/dynamic-linker-tricks-using-ld_preload-to-cheat-inject-features-and-investigate-programs/
*/
#define _GNU_SOURCE
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
typedef int (*orig_open_f_type)(const char *filename, int flags);
typedef int (*orig_stat_f_type)(int ver, const char *filename, struct stat *buf);
typedef int (*orig_stat64_f_type)(int ver, const char *filename, struct stat64 *buf);
int open(const char *filename, int flags, ...)
{
orig_open_f_type orig_open;
orig_open = (orig_open_f_type)dlsym(RTLD_NEXT,"open");
return orig_open(filename, flags);
}
int __libc_open(const char *filename, int flags, ...)
{
orig_open_f_type orig_open;
orig_open = (orig_open_f_type)dlsym(RTLD_NEXT,"__libc_open");
return orig_open(filename, flags);
}
int open64(const char *filename, int flags, ...)
{
orig_open_f_type orig_open;
orig_open = (orig_open_f_type)dlsym(RTLD_NEXT,"open64");
return orig_open(filename, flags);
}
int __libc_open64(const char *filename, int flags, ...)
{
orig_open_f_type orig_open;
orig_open = (orig_open_f_type)dlsym(RTLD_NEXT,"__libc_open64");
return orig_open(filename, flags);
}
int access(const char *filename, int type)
{
orig_open_f_type orig_open;
orig_open = (orig_open_f_type)dlsym(RTLD_NEXT,"access");
return orig_open(filename, type);
}
int euidaccess(const char *filename, int type)
{
orig_open_f_type orig_open;
orig_open = (orig_open_f_type)dlsym(RTLD_NEXT,"euidaccess");
return orig_open(filename, type);
}
int __xstat(int ver, const char *filename, struct stat *buf)
{
orig_stat_f_type orig_stat;
orig_stat = (orig_stat_f_type)dlsym(RTLD_NEXT,"__xstat");
return orig_stat(ver, filename, buf);
}
int __xstat64(int ver, const char *filename, struct stat64 *buf)
{
orig_stat64_f_type orig_stat64;
orig_stat64 = (orig_stat64_f_type)dlsym(RTLD_NEXT,"__xstat64");
return orig_stat64(ver, filename, buf);
}
int __lxstat(int ver, const char *filename, struct stat *buf)
{
orig_stat_f_type orig_stat;
orig_stat = (orig_stat_f_type)dlsym(RTLD_NEXT,"__lxstat");
return orig_stat(ver, filename, buf);
}
int __lxstat64(int ver, const char *filename, struct stat64 *buf)
{
orig_stat64_f_type orig_stat64;
orig_stat64 = (orig_stat64_f_type)dlsym(RTLD_NEXT,"__lxstat64");
return orig_stat64(ver, filename, buf);
}
时创建上述输出。 env LD_PRELOAD=/path/to/ldpreload.so dash ./configure似乎没有帮助：
config.log