Bool
FileIO_CloseAndUnlink(FileIODescriptor *fd) // IN:
{
Unicode path;
Bool ret;
ASSERT(fd);
ASSERT(FileIO_IsValid(fd));
path = Unicode_Duplicate(fd->fileName);
ret = FileIO_Close(fd);
if (!ret) {
if (File_UnlinkIfExists(path) == -1) {
ret = TRUE;
}
}
Unicode_Free(path);
return ret;
}
FileIOResult
FileIO_CloseAndUnlink(FileIODescriptor *fd) // IN:
{
char *path;
FileIOResult ret;
ASSERT(fd);
ASSERT(FileIO_IsValid(fd));
path = Unicode_Duplicate(fd->fileName);
ret = FileIO_Close(fd);
if (FileIO_IsSuccess(ret)) {
if (File_UnlinkIfExists(path) == -1) {
ret = FILEIO_ERROR;
}
}
free(path);
return ret;
}
FileIOResult
FileIO_AtomicTempFile(FileIODescriptor *fileFD, // IN:
FileIODescriptor *tempFD) // OUT:
{
Unicode tempPath = NULL;
int permissions;
FileIOResult status;
#if !defined(_WIN32)
int ret;
struct stat stbuf;
#endif
ASSERT(FileIO_IsValid(fileFD));
ASSERT(tempFD && !FileIO_IsValid(tempFD));
tempPath = FileIO_AtomicTempPath(FileIO_Filename(fileFD));
if (!tempPath) {
status = FILEIO_ERROR;
goto bail;
}
#if defined(_WIN32)
permissions = 0;
File_UnlinkIfExists(tempPath);
#else
if (fstat(fileFD->posix, &stbuf)) {
Log("%s: Failed to fstat '%s', errno: %d.\n", __FUNCTION__,
FileIO_Filename(fileFD), errno);
status = FILEIO_ERROR;
goto bail;
}
permissions = stbuf.st_mode;
/* Clean up a previously created temp file; if one exists. */
ret = Posix_Unlink(tempPath);
if (ret != 0 && errno != ENOENT) {
Log("%s: Failed to unlink temporary file, errno: %d\n",
__FUNCTION__, errno);
/* Fall through; FileIO_Create will report the actual error. */
}
#endif
status = FileIO_Create(tempFD, tempPath,
FILEIO_ACCESS_READ | FILEIO_ACCESS_WRITE,
FILEIO_OPEN_CREATE_SAFE, permissions);
if (!FileIO_IsSuccess(status)) {
Log("%s: Failed to create temporary file, %s (%d). errno: %d\n",
__FUNCTION__, FileIO_ErrorEnglish(status), status, Err_Errno());
goto bail;
}
#if !defined(_WIN32)
/*
* On ESX we always use the vmkernel atomic file swap primitive, so
* there's no need to set the permissions and owner of the temp file.
*
* XXX this comment is not true for NFS on ESX -- we use rename rather
* than "vmkernel atomic file swap primitive" -- but we do not care
* because files are always owned by root. Sigh. Bug 839283.
*/
if (!HostType_OSIsVMK()) {
if (fchmod(tempFD->posix, stbuf.st_mode)) {
Log("%s: Failed to chmod temporary file, errno: %d\n",
__FUNCTION__, errno);
status = FILEIO_ERROR;
goto bail;
}
if (fchown(tempFD->posix, stbuf.st_uid, stbuf.st_gid)) {
Log("%s: Failed to chown temporary file, errno: %d\n",
__FUNCTION__, errno);
status = FILEIO_ERROR;
goto bail;
}
}
#endif
Unicode_Free(tempPath);
return FILEIO_SUCCESS;
bail:
ASSERT(!FileIO_IsSuccess(status));
if (FileIO_IsValid(tempFD)) {
FileIO_Close(tempFD);
#if defined(_WIN32)
File_UnlinkIfExists(tempPath);
#else
ret = Posix_Unlink(tempPath);
if (ret != 0) {
Log("%s: Failed to clean up temporary file, errno: %d\n",
__FUNCTION__, errno);
}
ASSERT(ret == 0);
#endif
}
Unicode_Free(tempPath);
return status;
}
