| 1 | #include <stdio.h> |
| 2 | #include <unistd.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <sys/ptrace.h> |
| 5 | #include <errno.h> |
| 6 | |
| 7 | unsigned char buf[1024]; |
| 8 | |
| 9 | int main(int argc, unsigned char **argv) |
| 10 | { |
| 11 | pid_t pid; |
| 12 | unsigned long addr1, addr2; |
| 13 | int buf; |
| 14 | |
| 15 | if(argc < 4) |
| 16 | { |
| 17 | fprintf(stderr, "Not enough args\n"); |
| 18 | return(1); |
| 19 | } |
| 20 | pid = strtol(argv[1], NULL, 0); |
| 21 | addr1 = (unsigned long)strtoll(argv[2], NULL, 0); |
| 22 | addr2 = (unsigned long)strtoll(argv[3], NULL, 0); |
| 23 | if(ptrace(PTRACE_ATTACH, pid, NULL, NULL)) |
| 24 | { |
| 25 | perror("PTRACE_ATTACH"); |
| 26 | return(1); |
| 27 | } |
| 28 | for(; addr1 < addr2; addr1 += sizeof(int)) |
| 29 | { |
| 30 | errno = 0; |
| 31 | if(((buf = ptrace(PTRACE_PEEKDATA, pid, (void *)addr1, NULL)) == -1) && errno) |
| 32 | { |
| 33 | perror("PTRACE_PEEKDATA"); |
| 34 | if(ptrace(PTRACE_DETACH, pid, NULL, NULL)) |
| 35 | perror("PTRACE_DETACH"); |
| 36 | return(1); |
| 37 | } |
| 38 | if(write(1, &buf, sizeof(buf)) != 4) |
| 39 | { |
| 40 | perror("write"); |
| 41 | if(ptrace(PTRACE_DETACH, pid, NULL, NULL)) |
| 42 | perror("PTRACE_DETACH"); |
| 43 | return(1); |
| 44 | } |
| 45 | } |
| 46 | if(ptrace(PTRACE_DETACH, pid, NULL, NULL)) |
| 47 | { |
| 48 | perror("PTRACE_DETACH"); |
| 49 | return(1); |
| 50 | } |
| 51 | return(0); |
| 52 | } |