| 41 | static OFF_T sparse_past_write = 0; |
| 42 | |
| 43 | int sparse_end(int f, OFF_T size, int updating_basis_or_equiv) |
| 44 | { |
| 45 | int ret = 0; |
| 46 | |
| 47 | if (updating_basis_or_equiv) { |
| 48 | if (sparse_seek && do_punch_hole(f, sparse_past_write, sparse_seek) < 0) |
| 49 | ret = -1; |
| 50 | #ifdef HAVE_FTRUNCATE /* A compilation formality -- in-place requires ftruncate() */ |
| 51 | else /* Just in case the original file was longer */ |
| 52 | ret = do_ftruncate(f, size); |
| 53 | #endif |
| 54 | } else if (sparse_seek) { |
| 55 | #ifdef HAVE_FTRUNCATE |
| 56 | ret = do_ftruncate(f, size); |
| 57 | #else |
| 58 | if (do_lseek(f, sparse_seek-1, SEEK_CUR) != size-1) |
| 59 | ret = -1; |
| 60 | else { |
| 61 | do { |
| 62 | ret = write(f, "", 1); |
| 63 | } while (ret < 0 && errno == EINTR); |
| 64 | |
| 65 | ret = ret <= 0 ? -1 : 0; |
| 66 | } |
| 67 | #endif |
| 68 | } |
| 69 | |
| 70 | sparse_past_write = sparse_seek = 0; |
| 71 | |
| 72 | return ret; |
| 73 | } |
| 74 | |
| 75 | /* Note that the offset is just the caller letting us know where |
| 76 | * the current file position is in the file. The use_seek arg tells |
no test coverage detected