udev_sysdeps.c

   1 /*
   2  * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
   3  * Copyright (C) 2005-2006 Kay Sievers <kay.sievers@vrfy.org>
   4  *
   5  *      This program is free software; you can redistribute it and/or modify it
   6  *      under the terms of the GNU General Public License as published by the
   7  *      Free Software Foundation version 2 of the License.
   8  *
   9  *      This program is distributed in the hope that it will be useful, but
  10  *      WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  *      General Public License for more details.
  13  *
  14  *      You should have received a copy of the GNU General Public License along
  15  *      with this program; if not, write to the Free Software Foundation, Inc.,
  16  *      51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  17  *
  18  */
  19
  20 #include <stdlib.h>
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <ctype.h>
  24 #include <fcntl.h>
  25 #include <errno.h>
  26 #include <sys/types.h>
  27
  28 #include "udev.h"
  29
  30 #ifdef __GLIBC__
  31 size_t strlcpy(char *dst, const char *src, size_t size)
  32 {
  33         size_t bytes = 0;
  34         char *q = dst;
  35         const char *p = src;
  36         char ch;
  37
  38         while ((ch = *p++)) {
  39                 if (bytes+1 < size)
  40                         *q++ = ch;
  41                 bytes++;
  42         }
  43
  44         /* If size == 0 there is no space for a final null... */
  45         if (size)
  46                 *q = '\0';
  47         return bytes;
  48 }
  49
  50 size_t strlcat(char *dst, const char *src, size_t size)
  51 {
  52         size_t bytes = 0;
  53         char *q = dst;
  54         const char *p = src;
  55         char ch;
  56
  57         while (bytes < size && *q) {
  58                 q++;
  59                 bytes++;
  60         }
  61         if (bytes == size)
  62                 return (bytes + strlen(src));
  63
  64         while ((ch = *p++)) {
  65                 if (bytes+1 < size)
  66                 *q++ = ch;
  67                 bytes++;
  68         }
  69
  70         *q = '\0';
  71         return bytes;
  72 }
  73 #endif /* __GLIBC__ */