| | 1 | // Cryptographic API Base |
| | 2 | #include <config.h> |
| | 3 | |
| | 4 | #include <unistd.h> |
| | 5 | #include "hashsum_template.h" |
| | 6 | |
| | 7 | // Summation::AddFD - Add content of file into the checksum /*{{{*/ |
| | 8 | // --------------------------------------------------------------------- |
| | 9 | /* */ |
| | 10 | bool SummationImplementation::AddFD(int const Fd, unsigned long long Size) { |
| | 11 | unsigned char Buf[64 * 64]; |
| | 12 | ssize_t Res = 0; |
| | 13 | int ToEOF = (Size == 0); |
| | 14 | while (Size != 0 || ToEOF) |
| | 15 | { |
| | 16 | unsigned long long n = sizeof(Buf); |
| | 17 | if (!ToEOF) n = std::min(Size, n); |
| | 18 | Res = read(Fd, Buf, n); |
| | 19 | if (Res < 0 || (!ToEOF && Res != (ssize_t) n)) // error, or short read |
| | 20 | return false; |
| | 21 | if (ToEOF && Res == 0) // EOF |
| | 22 | break; |
| | 23 | Size -= Res; |
| | 24 | Add(Buf,Res); |
| | 25 | } |
| | 26 | return true; |
| | 27 | } |
| | 28 | /*}}}*/ |
projects / apt.git / blame_incremental