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#include "exception.ih"
size_t Exception::protection(std::string const &name, size_t protect,
Protection type)
{
if (protect > 0777)
throw Exception{} << "Protection for `" << name << "' "
"may not exceed 0777 (requested: 0" << oct <<
protect << dec << ')';
struct stat statbuf;
// no: create it with the requested protection
if (stat(name.c_str(), &statbuf) != 0) // bits
{
if (errno != ENOENT) // stat error, but not non-existing file
throw Exception{} << "Cannot obtain details about `" << name <<
'\'';
int fd = ::open(name.c_str(), O_CREAT, protect);
if (fd < 0)
throw Exception{} << "Can't create 0" << oct << protect <<
dec << ' ' << name;
close(fd);
return protect;
}
size_t mode = statbuf.st_mode & 07777; // get the actual mode
if (type == EQUAL && mode != protect)
throw Exception{} << "Protection of `" << name << "' (0" << oct <<
mode << ") differs from required 0" <<
protect;
return mode;
}
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