1 /* (c) 2007,2008 Andrei Nigmatulin */
2
3 #define _GNU_SOURCE
4 #define _FILE_OFFSET_BITS 64
5
6 #include "fpm_config.h"
7
8 #include <unistd.h>
9
10 #include <fcntl.h>
11 #include <stdio.h>
12 #include <inttypes.h>
13
14 #include "fpm_trace.h"
15 #include "fpm_process_ctl.h"
16 #include "zlog.h"
17
18 static int mem_file = -1;
19
fpm_trace_signal(pid_t pid)20 int fpm_trace_signal(pid_t pid) /* {{{ */
21 {
22 if (0 > fpm_pctl_kill(pid, FPM_PCTL_STOP)) {
23 zlog(ZLOG_SYSERROR, "failed to send SIGSTOP to %d", pid);
24 return -1;
25 }
26 return 0;
27 }
28 /* }}} */
29
fpm_trace_ready(pid_t pid)30 int fpm_trace_ready(pid_t pid) /* {{{ */
31 {
32 char buf[128];
33
34 sprintf(buf, "/proc/%d/" PROC_MEM_FILE, (int) pid);
35 mem_file = open(buf, O_RDONLY);
36 if (0 > mem_file) {
37 zlog(ZLOG_SYSERROR, "failed to open %s", buf);
38 return -1;
39 }
40 return 0;
41 }
42 /* }}} */
43
fpm_trace_close(pid_t pid)44 int fpm_trace_close(pid_t pid) /* {{{ */
45 {
46 close(mem_file);
47 mem_file = -1;
48 return 0;
49 }
50 /* }}} */
51
fpm_trace_get_long(long addr,long * data)52 int fpm_trace_get_long(long addr, long *data) /* {{{ */
53 {
54 if (sizeof(*data) != pread(mem_file, (void *) data, sizeof(*data), (uintptr_t) addr)) {
55 zlog(ZLOG_SYSERROR, "pread() failed");
56 return -1;
57 }
58 return 0;
59 }
60 /* }}} */
61
