chmod()                  Change File Permission Setting
 
 
 #include   <io.h>
 #include   <sys\types.h>
 #include   <sys\stat.h>
 
 int        chmod(pathname, pmode);
 char       *pathname;                   Name of file
 int        pmode;                       Permission setting
 
    chmod() changes the permission setting of the file specified by
    'pathname'. The permission setting controls whether the file has
    read-only or read and write access. To change the permission setting,
    set the 'pmode' value to:
 
                S_IWRITE              for write permission
                S_IREAD               for read permission
                S_IREAD | S_IWRITE    for read and write permission
 
    Returns:    Zero if the permission setting is successfully changed,
                or -1 if there is an error, in which case errno is set to
                ENOENT (file not found).
 
      Notes:    Under MS-DOS all files are readable; you cannot have a
                write-only file. If write permission is not specified,
                the file is made read-only.
 
  -------------------------------- Example ---------------------------------
 
    The following statements change the file to read-only status:
 
           #include <sys\stat.h>
           #include <io.h>
 
           int result;
 
           main()
           {
                 result = chmod("invoice.bak", S_IREAD);
                 if (result == -1)
                    perror("can't change permission mode");
            }

Seealso:


 access() 
 creat() 
 fstat() 
 open() 
 stat()