diff options
Diffstat (limited to 'winsup/cygwin/fhandler/disk_file.cc')
| -rw-r--r-- | winsup/cygwin/fhandler/disk_file.cc | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/winsup/cygwin/fhandler/disk_file.cc b/winsup/cygwin/fhandler/disk_file.cc index 245e9bb75..51602f30f 100644 --- a/winsup/cygwin/fhandler/disk_file.cc +++ b/winsup/cygwin/fhandler/disk_file.cc @@ -25,6 +25,7 @@ details. */ #include "devices.h" #include "ldap.h" #include <aio.h> +#include <fcntl.h> #include <cygwin/fs.h> #define _LIBC @@ -1130,7 +1131,7 @@ fhandler_disk_file::fadvise (off_t offset, off_t length, int advice) } int -fhandler_disk_file::ftruncate (off_t length, bool allow_truncate) +fhandler_disk_file::fallocate (int mode, off_t offset, off_t length) { int res = 0; @@ -1152,17 +1153,18 @@ fhandler_disk_file::ftruncate (off_t length, bool allow_truncate) if (!NT_SUCCESS (status)) return geterrno_from_nt_status (status); - /* If called through posix_fallocate, silently succeed if length - is less than the file's actual length. */ - if (!allow_truncate && length < fsi.EndOfFile.QuadPart) + /* If called through posix_fallocate, silently succeed if + offset + length is less than the file's actual length. */ + if (mode == 0 && offset + length < fsi.EndOfFile.QuadPart) return 0; - feofi.EndOfFile.QuadPart = length; + feofi.EndOfFile.QuadPart = offset + length; /* Create sparse files only when called through ftruncate, not when called through posix_fallocate. */ - if (allow_truncate && pc.support_sparse () + if ((mode & __FALLOC_FL_TRUNCATE) && !has_attribute (FILE_ATTRIBUTE_SPARSE_FILE) - && length >= fsi.EndOfFile.QuadPart + (128 * 1024)) + && pc.support_sparse () + && offset + length >= fsi.EndOfFile.QuadPart + (128 * 1024)) { status = NtFsControlFile (get_handle (), NULL, NULL, NULL, &io, FSCTL_SET_SPARSE, NULL, 0, NULL, 0); |