AcessNative/acesskernel_src/syscall_getpath.c

   1 /*
   2  * AcessNative Kernel
   3  *
   4  * syscall_getpath.c
   5  * - Implementation of the SYS_AN_GETPATH system call
   6  */
   7
   8 #include <acess.h>
   9 #include <vfs_int.h>
  10
  11 extern char     *getcwd(char *buf, size_t size);
  12
  13 extern tVFS_NodeType    gNativeFS_FileNodeType;
  14 extern tVFS_NodeType    gNativeFS_DirNodeType;
  15
  16 int Syscall_AN_GetPath_Real(char *Dst, size_t DstLen, const char *Path)
  17 {
  18         tVFS_Node       *node = VFS_ParsePath(Path, NULL, NULL);
  19         if(!node)       return -1;
  20
  21         const char *relpath = NULL;
  22
  23         if( node->Type == &gNativeFS_FileNodeType || node->Type == &gNativeFS_DirNodeType )
  24         {
  25                 relpath = node->Data;
  26         }
  27         else
  28         {
  29                 relpath = NULL;
  30         }
  31
  32         size_t  ret;
  33         if( relpath )
  34         {
  35                 if( relpath[0] == '/' ) {
  36                         ret = snprintf(Dst, DstLen, "%s", relpath);
  37                 }
  38                 else {
  39                         getcwd(Dst, DstLen);
  40                         ret = strlen(Dst);
  41                         ret += snprintf(Dst+ret, DstLen-ret, "/%s", relpath);
  42                 }
  43         }
  44         else
  45         {
  46                 ret = 0;
  47         }
  48
  49         _CloseNode(node);
  50         return ret;
  51 }