STRLCPY/criu

dump: increase fcntl call failure judgment The pipe_size type is unsigned int, when the fcntl call fails and return -1, it will cause a negative rollover problem.
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Signed-off-by: zhoujie <[email protected]>
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hdzhoujie committed with Andrei Vagin 1 year ago

32c0983d

1 parent cf21367d

Total 1 files

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criu/page-pipe.c

		skipped 98 lines
99	99		{
100	100		struct page_pipe_buf *prev = pp_prev_ppb(pp, ppb_flags);
101	101		struct page_pipe_buf *ppb;
	102	+	int ppb_size = 0;
102	103
103	104		ppb = xmalloc(sizeof(*ppb));
104	105		if (!ppb)
		skipped 15 lines
120	121		cnt_add(CNT_PAGE_PIPES, 1);
121	122
122	123		ppb->pipe_off = 0;
123		-	ppb->pipe_size = fcntl(ppb->p[0], F_GETPIPE_SZ, 0) / PAGE_SIZE;
	124	+	ppb_size = fcntl(ppb->p[0], F_GETPIPE_SZ, 0);
	125	+	if (ppb_size < 0) {
	126	+	xfree(ppb);
	127	+	pr_perror("Can't get pipe size");
	128	+	return NULL;
	129	+	}
	130	+	ppb->pipe_size = ppb_size / PAGE_SIZE;
124	131		pp->nr_pipes++;
125	132		}
126	133
		skipped 330 lines