sysinfo emulation

*** 35,44 ****
--- 35,45 ----
  #include <sys/inttypes.h>
  #include <sys/lwp.h>
  #include <sys/syscall.h>
  #include <sys/systm.h>
  #include <sys/utsname.h>
+ #include <sys/systeminfo.h>
  #include <sys/zone.h>
  #include <sys/stat.h>
  #include <sys/mntent.h>
  #include <sys/ctfs.h>
  #include <sys/priv.h>
*** 643,652 ****
--- 644,705 ----
                  return (EFAULT);
  
          return (0);
  }
  
+ int
+ s10_sysinfo(sysret_t *rv, int command, char *buf, long count)
+ {
+         char *value;
+         int err, len;
+ 
+         /*
+          * We must interpose on the sysinfo(2) commands SI_RELEASE and
+          * SI_VERSION; all others get passed to the native sysinfo(2)
+          * command.
+          */
+         switch (command) {
+                 case SI_RELEASE:
+                         value = S10_UTS_RELEASE;
+                         break;
+ 
+                 case SI_VERSION:
+                         value = S10_UTS_VERSION;
+                         break;
+ 
+                 default:
+                         /*
+                          * The default action is to pass the command to the
+                          * native sysinfo(2) syscall.
+                          */
+                         if ((err = __systemcall(rv, SYS_systeminfo + 1024,
+                             command, buf, count)) != 0)
+                                 return (err);
+ 
+                         return (0);
+         }
+ 
+         len = strlen(value) + 1;
+         if (count > 0) {
+                 if (s10_uucopystr(value, buf, count) != 0)
+                         return (EFAULT);
+ 
+                 /* Assure NULL termination of buf as s10_uucopystr() doesn't. */
+                 if (len > count && s10_uucopy("\0", buf + (count - 1), 1) != 0)
+                         return (EFAULT);
+         }
+ 
+         /*
+          * On success, sysinfo(2) returns the size of buffer required to hold
+          * the complete value plus its terminating NULL byte.
+          */
+         rv->sys_rval1 = len;
+         rv->sys_rval2 = 0;
+         S10_TRUSS_POINT_3(rv, SYS_systeminfo, 0, command, buf, count);
+         return (0);
+ }
+ 
  /*
   * If the emul_global_zone flag is set then emulate some aspects of the
   * zone system call.  In particular, emulate the global zone ID on the
   * ZONE_LOOKUP subcommand and emulate some of the global zone attributes
   * on the ZONE_GETATTR subcommand.  If the flag is not set or we're performing
*** 1129,1139 ****
          NOSYS,                                  /* 134 */
          EMULATE(s10_uname, 1 | RV_DEFAULT),     /* 135 */
          NOSYS,                                  /* 136 */
          NOSYS,                                  /* 137 */
          NOSYS,                                  /* 138 */
!         NOSYS,                                  /* 139 */
          NOSYS,                                  /* 140 */
          NOSYS,                                  /* 141 */
          NOSYS,                                  /* 142 */
          NOSYS,                                  /* 143 */
          NOSYS,                                  /* 144 */
--- 1182,1192 ----
          NOSYS,                                  /* 134 */
          EMULATE(s10_uname, 1 | RV_DEFAULT),     /* 135 */
          NOSYS,                                  /* 136 */
          NOSYS,                                  /* 137 */
          NOSYS,                                  /* 138 */
!         EMULATE(s10_sysinfo, 3 | RV_DEFAULT),   /* 139 */
          NOSYS,                                  /* 140 */
          NOSYS,                                  /* 141 */
          NOSYS,                                  /* 142 */
          NOSYS,                                  /* 143 */
          NOSYS,                                  /* 144 */