取消引用指向不完整類型的指針'struct pt_regs'

Question

我想在Android上使用ptrace來掛鉤。當我編譯下面的代碼（使用ndk或命令「aarch64-linux-gnu-gcc hook1.c -o hook1」）時，我收到了錯誤消息。我試圖解決它，但我無法成功。 任何人都可以幫助我嗎？ T_T

hook1.c（代碼）

#include <sys/ptrace.h> 
#include <sys/types.h> 
#include <sys/wait.h> 
#include <unistd.h> 
#include <stdio.h> 
#include <errno.h> 
#include <string.h> 
#include <stdlib.h> 
#include <sys/syscall.h> 

long getSysCallNo(int pid, struct pt_regs *regs) 
{ 
    long scno = 0; 
    scno = ptrace(PTRACE_PEEKTEXT, pid, (void *)(regs->ARM_pc - 4), NULL); 
    if(scno == 0) 
     return 0; 

    if (scno == 0xef000000) { 
     scno = regs->ARM_r7; 
    } else { 
     if ((scno & 0x0ff00000) != 0x0f900000) { 
      return -1; 
     } 
     scno &= 0x000fffff; 
    } 
    return scno;  
} 

void hookSysCallBefore(pid_t pid) 
{ 
    struct pt_regs regs; 
    int sysCallNo = 0; 

    ptrace(PTRACE_GETREGS, pid, NULL, &regs);  
    sysCallNo = getSysCallNo(pid, &regs); 
    printf("Before SysCallNo = %d\n",sysCallNo); 

    if(sysCallNo == __NR_write) 
    { 
     printf("__NR_write: %ld %p %ld\n",regs.ARM_r0,(void*)regs.ARM_r1,regs.ARM_r2); 
    } 
} 

void hookSysCallAfter(pid_t pid) 
{ 
    struct pt_regs regs; 
    int sysCallNo = 0; 

    ptrace(PTRACE_GETREGS, pid, NULL, &regs); 
    sysCallNo = getSysCallNo(pid, &regs); 

    printf("After SysCallNo = %d\n",sysCallNo); 

    if(sysCallNo == __NR_write) 
    { 
     printf("__NR_write return: %ld\n",regs.ARM_r0); 
    } 

    printf("\n"); 
} 

int main(int argc, char *argv[]) 
{ 
    if(argc != 2) { 
     printf("Usage: %s <pid to be traced>\n", argv[0]); 
     return 1; 
    } 

    pid_t pid; 
    int status; 
    pid = atoi(argv[1]); 

    if(0 != ptrace(PTRACE_ATTACH, pid, NULL, NULL)) 
    { 
     printf("Trace process failed:%d.\n", errno); 
     return 1; 
    } 

    ptrace(PTRACE_SYSCALL, pid, NULL, NULL); 

    while(1) 
    { 
     wait(&status); 
     hookSysCallBefore(pid); 
     ptrace(PTRACE_SYSCALL, pid, NULL, NULL); 

     wait(&status); 
     hookSysCallAfter(pid); 
     ptrace(PTRACE_SYSCALL, pid, NULL, NULL); 
    } 

    ptrace(PTRACE_DETACH, pid, NULL, NULL); 
    return 0; 
} 

編譯信息

Answer 1

我soooooooooo抱歉。 我錯過了一個名爲Application.mk的文件。 當我將文件添加到eclipse時，我可以成功編譯。 非常感謝。