Added a few previously unversioned utils.

[utils.git] / dumpmem.c

diff --git a/dumpmem.c b/dumpmem.c
new file mode 100644 (file)
index 0000000..4f30fa2
--- /dev/null
+++ b/dumpmem.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <sys/ptrace.h>
+#include <errno.h>
+
+unsigned char buf[1024];
+
+int main(int argc, unsigned char **argv)
+{
+    pid_t pid;
+    unsigned long addr1, addr2;
+    int buf;
+    
+    if(argc < 4)
+    {
+       fprintf(stderr, "Not enough args\n");
+       return(1);
+    }
+    pid = strtol(argv[1], NULL, 0);
+    addr1 = (unsigned long)strtoll(argv[2], NULL, 0);
+    addr2 = (unsigned long)strtoll(argv[3], NULL, 0);
+    if(ptrace(PTRACE_ATTACH, pid, NULL, NULL))
+    {
+       perror("PTRACE_ATTACH");
+       return(1);
+    }
+    for(; addr1 < addr2; addr1 += sizeof(int))
+    {
+       errno = 0;
+       if(((buf = ptrace(PTRACE_PEEKDATA, pid, (void *)addr1, NULL)) == -1) && errno)
+       {
+           perror("PTRACE_PEEKDATA");
+           if(ptrace(PTRACE_DETACH, pid, NULL, NULL))
+               perror("PTRACE_DETACH");
+           return(1);
+       }
+       if(write(1, &buf, sizeof(buf)) != 4)
+       {
+           perror("write");
+           if(ptrace(PTRACE_DETACH, pid, NULL, NULL))
+               perror("PTRACE_DETACH");
+           return(1);
+       }
+    }
+    if(ptrace(PTRACE_DETACH, pid, NULL, NULL))
+    {
+       perror("PTRACE_DETACH");
+       return(1);
+    }
+    return(0);
+}