intelvbttool: cope with errors in open()
Change-Id: I9fee87b7331ee05d4e984cb024f124abb2c97a69 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Found-by: Coverity Scan #1347357 Reviewed-on: https://review.coreboot.org/15962 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
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@ -515,13 +515,20 @@ int main(int argc, char **argv)
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{
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const void *ptr;
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int fd;
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off_t offset;
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if (argc == 2) {
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fd = open(argv[1], O_RDONLY);
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ptr = mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0);
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offset = 0;
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} else {
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fd = open("/dev/mem", O_RDONLY);
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ptr = mmap(0, 65536, PROT_READ, MAP_SHARED, fd, 0xc0000);
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offset = 0xc0000;
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}
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if (fd < 0) {
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fprintf(stderr, "open failed: %s\n", strerror(errno));
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return 1;
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}
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ptr = mmap(0, 65536, PROT_READ, MAP_SHARED, fd, offset);
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if (ptr == MAP_FAILED) {
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fprintf(stderr, "mmap failed: %s\n", strerror(errno));
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return 1;
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