vshost-util-vserver

Build script and sources for util-vserver.
git clone https://ccx.te2000.cz/git/vshost-util-vserver
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wrappers-io.hc (2192B)

      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 #ifndef H_ENSC_IN_WRAPPERS_H
     20 #  error wrappers_handler.hc can not be used in this way
     21 #endif
     22 
     23 #include <stdbool.h>
     24 
     25 inline static UNUSED bool
     26 WwriteAll(int fd, void const *ptr_v, size_t len, int *err)
     27 {
     28   register char const	*ptr = ptr_v;
     29 
     30   if (err) *err = 0;
     31 
     32   while (len>0) {
     33     ssize_t	res = TEMP_FAILURE_RETRY(write(fd, ptr, len));
     34     if (res<=0) {
     35       if (err) *err = errno;
     36       return false;
     37     }
     38 
     39     ptr += res;
     40     len -= res;
     41   }
     42   return true;
     43 }
     44 
     45 inline static UNUSED void
     46 EwriteAll(int fd, void const *ptr_v, size_t len)
     47 {
     48   register char const	*ptr = ptr_v;
     49 
     50   while (len>0) {
     51     ssize_t	res = TEMP_FAILURE_RETRY(write(fd, ptr, len));
     52     FatalErrnoError(res==-1, "write()");
     53 
     54     ptr += res;
     55     len -= res;
     56   }
     57 }
     58 
     59 
     60 inline static UNUSED bool
     61 WreadAll(int fd, void *ptr_v, size_t len, int *err)
     62 {
     63   register char	*ptr = ptr_v;
     64 
     65   if (err) *err = 0;
     66 
     67   while (len>0) {
     68     ssize_t	res = TEMP_FAILURE_RETRY(read(fd, ptr, len));
     69     if (res==-1) {
     70       if (err) *err = errno;
     71       return false;
     72     }
     73 
     74     if (res==0) return false;
     75 
     76     ptr += res;
     77     len -= res;
     78   }
     79   return true;
     80 }
     81 
     82 inline static UNUSED bool
     83 EreadAll(int fd, void *ptr_v, size_t len)
     84 {
     85   register char	*ptr = ptr_v;
     86   
     87   while (len>0) {
     88     ssize_t	res = TEMP_FAILURE_RETRY(read(fd, ptr, len));
     89     FatalErrnoError(res==-1, "read()");
     90 
     91     if (res==0) return false;
     92 
     93     ptr += res;
     94     len -= res;
     95   }
     96 
     97   return true;
     98 }