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
   7 #include "parse.h"
   8 #include "analyze.h"
   9
  10 void print_help_and_die(char *name)
  11 {
  12         printf("Usage: %s options \n"
  13                 "-p, --pid=PID          scan maps belonging to a given pid\n"
  14                 "-P, --process=PROCESS  scan maps belonging to processes with "
  15                 "given name\n"
  16                 "-m, --map=mapname      scan maps with given mapping name\n"
  17                 "-h, --help             show this help\n",
  18                 name);
  19
  20         exit(0);
  21 }
  22
  23 #define OPT_WITH_THREADS        0x101
  24
  25 void read_args(int argc, char *argv[], struct parse_opts *opts)
  26 {
  27         int optind = 0, c;
  28         static struct option long_options[] = {
  29                 { .val = 'p', .name = "pid", .has_arg = 1, },
  30                 { .val = 'P', .name = "process", .has_arg = 1, },
  31                 { .val = 'm', .name = "map", .has_arg = 1, },
  32                 { .val = OPT_WITH_THREADS, .name = "with-threads" },
  33                 { .val = 'h', .name = "help", },
  34         };
  35         char short_options[] = "p:P:m:h";
  36         opts->parse_mask = 0;
  37
  38         while (1) {
  39                 c = getopt_long(argc, argv, short_options, long_options,
  40                                 &optind);
  41
  42                 if (c == -1)
  43                         break;
  44
  45                 switch (c) {
  46                 case 'p':
  47                         opts->pid = atoi(optarg);
  48                         opts->parse_mask |= PARSE_PID;
  49                         break;
  50                 case 'P':
  51                         opts->parse_mask |= PARSE_PROCESS_NAME;
  52                         opts->name = optarg;
  53                         break;
  54                 case 'm':
  55                         opts->parse_mask |= PARSE_MAP_NAME;
  56                         opts->name = optarg;
  57                         break;
  58                 case OPT_WITH_THREADS:
  59                         opts->with_threads = 1;
  60                         break;
  61                 case 'h':
  62                         print_help_and_die(argv[0]);
  63                 }
  64         }
  65 }
  66
  67 int main(int argc, char *argv[])
  68 {
  69         struct pageframe pf;
  70         struct process *process_list = NULL;
  71         struct parse_opts opts;
  72
  73         memset(&opts, 0, sizeof(opts));
  74
  75         read_args(argc, argv, &opts);
  76
  77         if (argc < 3) {
  78                 printf("A pid needs to be given as an argument\n");
  79                 print_help_and_die(argv[0]);
  80         }
  81
  82         memset(&pf, 0, sizeof(pf));
  83
  84         if (scan_all_pids(&pf, &process_list, &opts))
  85                 return 1;
  86
  87         print_pid_stats(&pf, process_list, &opts);
  88         print_page_stats(&pf);
  89
  90         return 0;
  91 }