syscall_getvhiname-v13.hc (1564B)
1 // $Id$ --*- c -*-- 2 3 // Copyright (C) 2004 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de> 4 // 5 // This program is free software; you can redistribute it and/or modify 6 // it under the terms of the GNU General Public License as published by 7 // the Free Software Foundation; version 2 of the License. 8 // 9 // This program is distributed in the hope that it will be useful, 10 // but WITHOUT ANY WARRANTY; without even the implied warranty of 11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 // GNU General Public License for more details. 13 // 14 // You should have received a copy of the GNU General Public License 15 // along with this program; if not, write to the Free Software 16 // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 17 18 19 #ifdef HAVE_CONFIG_H 20 # include <config.h> 21 #endif 22 23 #include <string.h> 24 25 // HACK: workaround naming changes instead of defining yet another interface 26 // version 27 #if !defined(VCMD_get_vhi_name) && defined(VCMD_vx_get_vhi_name) 28 # define VCMD_get_vhi_name VCMD_vx_get_vhi_name 29 # define vcmd_vhi_name_v0 vcmd_vxi_vhi_name_v0 30 #endif 31 32 33 static inline ALWAYSINLINE int 34 vc_get_vhi_name_v13(xid_t xid, vc_uts_type type, char *val, size_t len) 35 { 36 struct vcmd_vhi_name_v0 cmd; 37 int rc; 38 size_t l = sizeof(cmd.name); 39 40 cmd.field = VHI_USER2KERNEL(type); 41 rc = vserver(VCMD_get_vhi_name, CTX_USER2KERNEL(xid), &cmd); 42 ENSC_FIX_IOCTL(rc); 43 if (rc==-1) return -1; 44 45 l = l>len ? len : l; 46 strncpy(val, cmd.name, l); 47 /* DO NOT terminate 'val' with '\0' explicitly */ 48 return 0; 49 }