sendmail/src/bf.c

108 	struct bf *bfp;
132 	bfp = (struct bf *) sm_malloc(sizeof(struct bf));
133 	if (bfp == NULL)
143 		bfp->bf_buf = (char *) sm_malloc(bsize);
144 		if (bfp->bf_buf == NULL)
146 			bfp->bf_bufsize = 0;
147 			sm_free(bfp);
153 		bfp->bf_buf = NULL;
156 	bfp->bf_committed = false;
157 	bfp->bf_ondisk = false;
158 	bfp->bf_flags = sflags;
159 	bfp->bf_bufsize = bsize;
160 	bfp->bf_buffilled = 0;
162 	bfp->bf_filename = (char *) sm_malloc(l);
163 	if (bfp->bf_filename == NULL)
165 		if (bfp->bf_buf != NULL)
166 			sm_free(bfp->bf_buf);
167 		sm_free(bfp);
171 	(void) sm_strlcpy(bfp->bf_filename, filename, l);
172 	bfp->bf_filemode = fmode;
173 	bfp->bf_offset = 0;
174 	bfp->bf_size = 0;
175 	bfp->bf_disk_fd = -1;
176 	fp->f_cookie = bfp;
268 	struct bf *bfp;
270 	bfp = (struct bf *) fp->f_cookie;
274 		return bfp->bf_disk_fd;
276 		return bfp->bf_size;
302 	struct bf *bfp;
305 	bfp = (struct bf *) fp->f_cookie;
308 	if (bfp->bf_ondisk && !bfp->bf_committed)
309 		unlink(bfp->bf_filename);
310 	sm_free(bfp->bf_filename);
312 	if (bfp->bf_disk_fd != -1)
313 		close(bfp->bf_disk_fd);
316 	if (bfp->bf_bufsize > 0)
317 		sm_free(bfp->bf_buf);
320 	sm_free(bfp);
346 	struct bf *bfp;
351 	bfp = (struct bf *) fp->f_cookie;
353 	if (bfp->bf_offset < bfp->bf_buffilled)
357 		if ((bfp->bf_offset + count) > bfp->bf_buffilled)
358 			count = bfp->bf_buffilled - bfp->bf_offset;
360 		memcpy(buf, bfp->bf_buf + bfp->bf_offset, count);
363 	if ((bfp->bf_offset + nbytes) > bfp->bf_buffilled)
366 		if (!bfp->bf_ondisk)
371 					   bfp->bf_filename);
376 		if (bfp->bf_disk_fd < 0)
382 		if (lseek(bfp->bf_disk_fd,
383 			  bfp->bf_offset + count, SEEK_SET) < 0)
400 			retval = read(bfp->bf_disk_fd,
416 	bfp->bf_offset += count;
443 	struct bf *bfp;
446 	bfp = (struct bf *) fp->f_cookie;
451 		bfp->bf_offset = offset;
455 		bfp->bf_offset += offset;
459 		bfp->bf_offset = bfp->bf_size + offset;
466 	return bfp->bf_offset;
491 	struct bf *bfp;
496 	bfp = (struct bf *) fp->f_cookie;
499 	if (bfp->bf_committed)
501 		if (lseek(bfp->bf_disk_fd, bfp->bf_offset, SEEK_SET) < 0)
516 		count = write(bfp->bf_disk_fd, buf, nbytes);
525 	if (bfp->bf_offset < bfp->bf_bufsize)
529 		if ((bfp->bf_offset + count) > bfp->bf_bufsize)
530 			count = bfp->bf_bufsize - bfp->bf_offset;
532 		memcpy(bfp->bf_buf + bfp->bf_offset, buf, count);
533 		if ((bfp->bf_offset + count) > bfp->bf_buffilled)
534 			bfp->bf_buffilled = bfp->bf_offset + count;
537 	if ((bfp->bf_offset + nbytes) > bfp->bf_bufsize)
540 		if (!bfp->bf_ondisk)
547 			retval = OPEN(bfp->bf_filename,
549 				      bfp->bf_filemode, bfp->bf_flags);
575 			bfp->bf_disk_fd = retval;
576 			bfp->bf_ondisk = true;
580 		if (bfp->bf_ondisk && bfp->bf_disk_fd < 0)
586 		if (lseek(bfp->bf_disk_fd,
587 			  bfp->bf_offset + count, SEEK_SET) < 0)
604 			retval = write(bfp->bf_disk_fd, buf + count,
617 	bfp->bf_offset += count;
618 	if (bfp->bf_offset > bfp->bf_size)
619 		bfp->bf_size = bfp->bf_offset;
675 	struct bf *bfp;
680 	bfp = (struct bf *) fp->f_cookie;
683 	if (bfp->bf_committed)
687 	if (!bfp->bf_ondisk)
695 			sm_dprintf("bfcommit(%s): to disk\n", bfp->bf_filename);
698 					   (unsigned int) bfp->bf_filemode,
699 					   bfp->bf_flags);
702 		if (stat(bfp->bf_filename, &st) == 0)
710 		retval = OPEN(bfp->bf_filename,
712 			      bfp->bf_filemode, bfp->bf_flags);
724 		bfp->bf_disk_fd = retval;
725 		bfp->bf_ondisk = true;
729 	if (bfp->bf_buffilled > 0)
733 		if (lseek(bfp->bf_disk_fd, 0, SEEK_SET) < 0)
739 		while (byteswritten < bfp->bf_buffilled)
741 			retval = write(bfp->bf_disk_fd,
742 				       bfp->bf_buf + byteswritten,
743 				       bfp->bf_buffilled - byteswritten);
753 	bfp->bf_committed = true;
756 	bfp->bf_buffilled = 0;
757 	if (bfp->bf_bufsize > 0)
760 		bfp->bf_bufsize = 0;
761 		sm_free(bfp->bf_buf);
788 	struct bf *bfp;
794 	bfp = (struct bf *) fp->f_cookie;
795 	bfp->bf_buffilled = 0;
796 	bfp->bf_size = 0;
799 	if (bfp->bf_bufsize > 0)
800 		memset(bfp->bf_buf, '\0', bfp->bf_bufsize);
801 	if (bfp->bf_ondisk)
808 		return ftruncate(bfp->bf_disk_fd, 0);
830 	struct bf *bfp;
834 	bfp = (struct bf *) fp->f_cookie;
839 		bfp->bf_bufsize = bsize;
844 			bfp->bf_buf = (char *) sm_malloc(bsize);
845 			if (bfp->bf_buf == NULL)
847 				bfp->bf_bufsize = 0;
853 			bfp->bf_buf = NULL;