git.itanic.dy.fi Git - scan-pagemap/blob - main.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <errno.h>
   5 #include <getopt.h>
   6 #include <unistd.h>
   7 #include <sys/types.h>
   8
   9 #include "parse.h"
  10 #include "analyze.h"
  11
  12 void print_help_and_die(char *name)
  13 {
  14         printf("Usage: %s options\n"
  15                 "-p, --pid=PID          scan maps belonging to a given pid\n"
  16                 "-P, --process=PROCESS  scan maps belonging to processes with "
  17                 "given name\n"
  18                 "-m, --map=mapname      scan maps with given mapping name\n"
  19                 "-d, --dump             dump process maps\n"
  20                 "-h, --help             show this help\n",
  21                 name);
  22
  23         exit(0);
  24 }
  25
  26 #define OPT_WITH_THREADS        0x101
  27
  28 void read_args(int argc, char *argv[], struct parse_opts *opts)
  29 {
  30         int optind = 0, c;
  31         static struct option long_options[] = {
  32                 { .val = 'p', .name = "pid", .has_arg = 1, },
  33                 { .val = 'P', .name = "process", .has_arg = 1, },
  34                 { .val = 'm', .name = "map", .has_arg = 1, },
  35                 { .val = OPT_WITH_THREADS, .name = "with-threads" },
  36                 { .val = 'd', .name = "dump", },
  37                 { .val = 'h', .name = "help", },
  38         };
  39         char short_options[] = "p:P:m:dh";
  40         opts->parse_mask = 0;
  41
  42         while (1) {
  43                 c = getopt_long(argc, argv, short_options, long_options,
  44                                 &optind);
  45
  46                 if (c == -1)
  47                         break;
  48
  49                 switch (c) {
  50                 case 'p':
  51                         opts->pid = atoi(optarg);
  52                         opts->parse_mask |= PARSE_PID;
  53                         break;
  54                 case 'P':
  55                         opts->parse_mask |= PARSE_PROCESS_NAME;
  56                         opts->name = optarg;
  57                         break;
  58                 case 'm':
  59                         opts->parse_mask |= PARSE_MAP_NAME;
  60                         opts->name = optarg;
  61                         break;
  62                 case OPT_WITH_THREADS:
  63                         opts->with_threads = 1;
  64                         break;
  65                 case 'd':
  66                         opts->parse_mask |= PARSE_DUMP;
  67                         break;
  68                 case 'h':
  69                         print_help_and_die(argv[0]);
  70                         break;
  71                 }
  72         }
  73 }
  74
  75 int main(int argc, char *argv[])
  76 {
  77         struct pageframe pf;
  78         struct process *process_list = NULL;
  79         struct parse_opts opts;
  80
  81         if (getuid()) {
  82                 printf("WARNING: Running without root priviledges. "
  83                         "Results may be inaccurate\n");
  84         }
  85
  86         memset(&opts, 0, sizeof(opts));
  87
  88         read_args(argc, argv, &opts);
  89
  90         if (argc < 3) {
  91                 printf("A pid needs to be given as an argument\n");
  92                 print_help_and_die(argv[0]);
  93         }
  94
  95         memset(&pf, 0, sizeof(pf));
  96
  97         if (scan_all_pids(&pf, &process_list, &opts))
  98                 return 1;
  99
 100         if (opts.parse_mask & PARSE_DUMP)
 101                 dump_process_maps(process_list);
 102         else
 103                 print_pid_stats(&pf, process_list, &opts);
 104
 105         print_page_stats(&pf);
 106
 107         return 0;
 108 }