diff options
Diffstat (limited to 'fileio.c')
| -rw-r--r-- | fileio.c | 42 |
1 files changed, 23 insertions, 19 deletions
@@ -3,7 +3,7 @@ * * Copyright (C) 1998 Andrew Tridgell * Copyright (C) 2002 Martin Pool - * Copyright (C) 2004-2020 Wayne Davison + * Copyright (C) 2004-2023 Wayne Davison * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -40,30 +40,34 @@ OFF_T preallocated_len = 0; static OFF_T sparse_seek = 0; static OFF_T sparse_past_write = 0; -int sparse_end(int f, OFF_T size) +int sparse_end(int f, OFF_T size, int updating_basis_or_equiv) { - int ret; - - sparse_past_write = 0; - - if (!sparse_seek) - return 0; + int ret = 0; + if (updating_basis_or_equiv) { + if (sparse_seek && do_punch_hole(f, sparse_past_write, sparse_seek) < 0) + ret = -1; +#ifdef HAVE_FTRUNCATE /* A compilation formality -- in-place requires ftruncate() */ + else /* Just in case the original file was longer */ + ret = do_ftruncate(f, size); +#endif + } else if (sparse_seek) { #ifdef HAVE_FTRUNCATE - ret = do_ftruncate(f, size); + ret = do_ftruncate(f, size); #else - if (do_lseek(f, sparse_seek-1, SEEK_CUR) != size-1) - ret = -1; - else { - do { - ret = write(f, "", 1); - } while (ret < 0 && errno == EINTR); - - ret = ret <= 0 ? -1 : 0; - } + if (do_lseek(f, sparse_seek-1, SEEK_CUR) != size-1) + ret = -1; + else { + do { + ret = write(f, "", 1); + } while (ret < 0 && errno == EINTR); + + ret = ret <= 0 ? -1 : 0; + } #endif + } - sparse_seek = 0; + sparse_past_write = sparse_seek = 0; return ret; } |