diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2017-07-16 01:19:23 -0700 |
|---|---|---|
| committer | Simon Hausmann <simon.hausmann@qt.io> | 2017-08-22 06:56:08 +0000 |
| commit | 26094982f893b6f655d20cefb678b306be02e5ac (patch) | |
| tree | bcf7cce4bdd6fbc5eb991dd227d0f5945e64af7d /src/corelib/io/qfilesystemengine_unix.cpp | |
| parent | 750a252b89e62a7325a6d0c0c470f2c6781ad875 (diff) | |
Move the file-cloning code from QFSFileEngine to QFileSystemEngine
Change-Id: I02d22222fff64d4dbda4fffd14d1c1bbf48385ff
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Diffstat (limited to 'src/corelib/io/qfilesystemengine_unix.cpp')
| -rw-r--r-- | src/corelib/io/qfilesystemengine_unix.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/corelib/io/qfilesystemengine_unix.cpp b/src/corelib/io/qfilesystemengine_unix.cpp index d74c126bef..3ba8275dfd 100644 --- a/src/corelib/io/qfilesystemengine_unix.cpp +++ b/src/corelib/io/qfilesystemengine_unix.cpp @@ -78,9 +78,16 @@ extern "C" NSString *NSTemporaryDirectory(); #endif #if defined(Q_OS_LINUX) +# include <sys/ioctl.h> # include <sys/syscall.h> +# include <sys/sendfile.h> # include <linux/fs.h> +// in case linux/fs.h is too old and doesn't define it: +#ifndef FICLONE +# define FICLONE _IOW(0x94, 9, int) +#endif + # if !QT_CONFIG(renameat2) && defined(SYS_renameat2) static int renameat2(int oldfd, const char *oldpath, int newfd, const char *newpath, unsigned flags) { return syscall(SYS_renameat2, oldfd, oldpath, newfd, newpath, flags); } @@ -1065,6 +1072,19 @@ bool QFileSystemEngine::fillMetaData(const QFileSystemEntry &entry, QFileSystemM return data.hasFlags(what); } +// static +bool QFileSystemEngine::cloneFile(int srcfd, int dstfd, const QFileSystemMetaData &knownData) +{ +#if defined(Q_OS_LINUX) + // try FICLONE (only works on regular files and only on certain fs) + return ::ioctl(dstfd, FICLONE, srcfd) == 0; +#else + Q_UNUSED(srcfd); + Q_UNUSED(dstfd); + return false; +#endif +} + // Note: if \a shouldMkdirFirst is false, we assume the caller did try to mkdir // before calling this function. static bool createDirectoryWithParents(const QByteArray &nativeName, bool shouldMkdirFirst = true) |