procan_main.c

   1 /* source: procan_main.c */
   2 /* Copyright Gerhard Rieger and contributors (see file CHANGES) */
   3 /* Published under the GNU General Public License V.2, see file COPYING */
   4
   5 const char copyright[] = "procan by Gerhard Rieger and contributors - send bug reports to socat@dest-unreach.org";
   6
   7 #include <signal.h>     /* sig_atomic_t for error.h */
   8 #include <time.h>       /* struct timespec for error.h */
   9 #include <stdlib.h>     /* strtoul() */
  10 #include <string.h>
  11 #include <stdio.h>
  12 #include "config.h"
  13 #if HAVE_SYS_SELECT_H
  14 #include <sys/select.h> /* select(), fdset on FreeBSD */
  15 #endif
  16 #include "mytypes.h"
  17 #include "error.h"
  18 #include "procan.h"
  19 #include "hostan.h"
  20
  21
  22 #define WITH_HELP 1
  23
  24 static void procan_usage(FILE *fd);
  25
  26
  27 int main(int argc, const char *argv[]) {
  28    const char **arg1;
  29 #if 0
  30    unsigned int n = 1024;       /* this is default on my Linux */
  31 #endif
  32
  33    diag_set('p', strchr(argv[0], '/') ? strrchr(argv[0], '/')+1 : argv[0]);
  34
  35    arg1 = argv+1;  --argc;
  36    while (arg1[0] && (arg1[0][0] == '-')) {
  37       switch (arg1[0][1]) {
  38 #if WITH_HELP
  39       case '?': case 'h': procan_usage(stdout); exit(0);
  40 #endif /* WITH_HELP */
  41       case 'c': procan_cdefs(stdout); exit(0);
  42 #if LATER
  43       case 'V': procan_version(stdout); exit(0);
  44       case 'l': diag_set(arg1[0][2], &arg1[0][3]); break;
  45       case 'd': diag_set('d', NULL); break;
  46 #endif
  47 #if 0
  48       case 'n': n = strtoul(&arg1[0][2], NULL, 0); break;
  49 #endif
  50       case '\0': break;
  51       default:
  52          diag_set_int('e', E_FATAL);
  53          Error1("unknown option \"%s\"", arg1[0]);
  54 #if WITH_HELP
  55          procan_usage(stderr);
  56 #endif
  57          exit(1);
  58       }
  59       if (arg1[0][1] == '\0')
  60          break;
  61       ++arg1; --argc;
  62    }
  63    if (argc != 0) {
  64       Error1("%d superfluous arguments", argc);
  65 #if WITH_HELP
  66       procan_usage(stderr);
  67 #endif
  68       exit(1);
  69    }
  70    procan(stdout);
  71    hostan(stdout);
  72    return 0;
  73 }
  74
  75
  76 #if WITH_HELP
  77 static void procan_usage(FILE *fd) {
  78    fputs(copyright, fd); fputc('\n', fd);
  79    fputs("Analyze system parameters of process\n", fd);
  80    fputs("Usage:\n", fd);
  81    fputs("procan [options]\n", fd);
  82    fputs("   options:\n", fd);
  83 #if LATER
  84    fputs("      -V     print version information to stdout, and exit\n", fd);
  85 #endif
  86 #if WITH_HELP
  87    fputs("      -?|-h  print a help text describing command line options\n", fd);
  88 #endif
  89    fputs("      -c     print values of compile time C defines\n", fd);
  90 #if LATER
  91    fputs("      -d     increase verbosity (use up to 4 times; 2 are recommended)\n", fd);
  92 #endif
  93 #if 0
  94    fputs("      -ly[facility]  log to syslog, using facility (default is daemon)\n", fd);
  95    fputs("      -lf<logfile>   log to file\n", fd);
  96    fputs("      -ls            log to stderr (default if no other log)\n", fd);
  97 #endif
  98 #if 0
  99    fputs("      -n<fdnum>      first file descriptor number not analyzed\n", fd);
 100 #endif
 101 }
 102 #endif /* WITH_HELP */