Linux 错误：ld.so：无法预加载来自 LD_PRELOAD 的对象“getpid.so”：忽略
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ERROR: ld.so: object 'getpid.so' from LD_PRELOAD cannot be preloaded: ignored
提问by MetallicPriest
When I try to use LD_PRELOAD as following,
当我尝试如下使用 LD_PRELOAD 时，
LD_PRELOAD=getpid.so ./testpid
I get the following error...
我收到以下错误...
ERROR: ld.so: object 'getpid.so' from LD_PRELOAD cannot be preloaded: ignored.
I compile getpid.so by using
我编译 getpid.so 使用
gcc -Wall -fPIC -shared -o getpid.so getpid.c
and it contains the following code...
它包含以下代码...
// getpid.c
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
pid_t getpid(void)
{
printf("Hello, world!\n");
return syscall(SYS_getpid);
}
tespid.cconstains code which uses getpid as shown below and which is compiled by doing
tespid.c包含使用 getpid 的代码，如下所示，并通过执行编译
gcc testpid -o testpid.c
What can be the problem here? Why is LD_PRELOAD not working?
这里可能有什么问题？为什么 LD_PRELOAD 不起作用？
// testpid.c
#include <sys/syscall.h>
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>
int main()
{
printf( "pid = %d!\n", getpid() );
return 0;
}
采纳答案by codaddict
Looks like the loader is unable to find getpid.soas you've not mentioned the path to the library.
看起来加载器无法找到，getpid.so因为您没有提到库的路径。
Try:
尝试：
LD_PRELOAD=/full/path/to/getpid.so ./testpid
