pith/osdep/filesize.c

   1 #if !defined(lint) && !defined(DOS)
   2 static char rcsid[] = "$Id: filesize.c 761 2007-10-23 22:35:18Z hubert@u.washington.edu $";
   3 #endif
   4
   5 /*
   6  * ========================================================================
   7  * Copyright 2013-2018 Eduardo Chappa
   8  * Copyright 2006 University of Washington
   9  *
  10  * Licensed under the Apache License, Version 2.0 (the "License");
  11  * you may not use this file except in compliance with the License.
  12  * You may obtain a copy of the License at
  13  *
  14  *     http://www.apache.org/licenses/LICENSE-2.0
  15  *
  16  * ========================================================================
  17  */
  18
  19 #include <system.h>
  20 #include "../charconv/utf8.h"
  21 #include "../charconv/filesys.h"
  22 #include "filesize.h"
  23
  24
  25 /*----------------------------------------------------------------------
  26       Return the number of bytes in given file
  27
  28     Args: file -- file name
  29
  30   Result: the number of bytes in the file is returned or
  31           -1 on error, in which case errno is valid
  32  ----*/
  33 long
  34 name_file_size(char *file)
  35 {
  36     struct stat buffer;
  37
  38     if(our_stat(file, &buffer) != 0)
  39       return(-1L);
  40
  41     return((long)buffer.st_size);
  42 }
  43
  44
  45 /*----------------------------------------------------------------------
  46       Return the number of bytes in given file
  47
  48     Args: fp -- FILE * for open file
  49
  50   Result: the number of bytes in the file is returned or
  51           -1 on error, in which case errno is valid
  52  ----*/
  53 long
  54 fp_file_size(FILE *fp)
  55 {
  56     struct stat buffer;
  57
  58     if(fstat(fileno(fp), &buffer) != 0)
  59       return(-1L);
  60
  61     return((long)buffer.st_size);
  62 }
  63
  64
  65 /*----------------------------------------------------------------------
  66       Return the modification time of given file
  67
  68     Args: file -- file name
  69
  70   Result: the time of last modification (mtime) of the file is returned or
  71           -1 on error, in which case errno is valid
  72  ----*/
  73 time_t
  74 name_file_mtime(char *file)
  75 {
  76     struct stat buffer;
  77
  78     if(our_stat(file, &buffer) != 0)
  79       return((time_t)(-1));
  80
  81     return(buffer.st_mtime);
  82 }
  83
  84
  85 /*----------------------------------------------------------------------
  86       Return the modification time of given file
  87
  88     Args: fp -- FILE * for open file
  89
  90   Result: the time of last modification (mtime) of the file is returned or
  91           -1 on error, in which case errno is valid
  92  ----*/
  93 time_t
  94 fp_file_mtime(FILE *fp)
  95 {
  96     struct stat buffer;
  97
  98     if(fstat(fileno(fp), &buffer) != 0)
  99       return((time_t)(-1));
 100
 101     return(buffer.st_mtime);
 102 }
 103
 104
 105 /*----------------------------------------------------------------------
 106       Copy the mode, owner, and group of sourcefile to targetfile.
 107
 108     Args: targetfile --
 109           sourcefile --
 110
 111     We don't bother keeping track of success or failure because we don't care.
 112  ----*/
 113 void
 114 file_attrib_copy(char *targetfile, char *sourcefile)
 115 {
 116     struct stat buffer;
 117
 118     if(our_stat(sourcefile, &buffer) == 0){
 119         our_chmod(targetfile, buffer.st_mode);
 120 #if     HAVE_CHOWN
 121         our_chown(targetfile, buffer.st_uid, buffer.st_gid);
 122 #endif
 123     }
 124 }