gen/FreeBSD/setprogname.c

   1 #include <sys/cdefs.h>
   2 __FBSDID("$FreeBSD: src/lib/libc/gen/setprogname.c,v 1.8 2002/03/29 22:43:41 markm Exp $");
   3
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include <sys/param.h>
   7 #include <sys/sysctl.h>
   8 #include <crt_externs.h>
   9 #define __progname      (*_NSGetProgname())
  10
  11 #include "libc_private.h"
  12
  13 void
  14 setprogname(const char *progname)
  15 {
  16         const char *p;
  17         char buf[2*MAXCOMLEN+1];
  18         int mib[2];
  19
  20         p = strrchr(progname, '/');
  21         if (p != NULL)
  22                 __progname = (char *)(p = p + 1);
  23         else
  24                 __progname = (char *)(p = progname);
  25
  26         strlcpy(&buf[0], (char *)(p), sizeof(buf));
  27
  28         mib[0] = CTL_KERN;
  29         mib[1] = KERN_PROCNAME;
  30
  31         /* ignore errors as this is not a hard error */
  32         sysctl(mib, 2, NULL, NULL, &buf[0], strlen(buf));
  33 }