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Add some missing checks for EINTR after select(2).

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I noticed today that Unix Plink responds to SIGWINCH by accidentally
dying of EINTR having interrupted its main select loop, and when I
checked, there turn out to be a couple of other select loops with the
same bug.
This commit is contained in:
Simon Tatham
2017-01-06 19:29:06 +00:00
parent 86ba2e6339
commit e2452f3bd0
3 changed files with 9 additions and 2 deletions
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4
unix/uxcons.c
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@ -101,7 +101,9 @@ static int block_and_read(int fd, void *buf, size_t len)
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(fd, &rfds);
ret = select(fd+1, &rfds, NULL, NULL, NULL);
do {
ret = select(fd+1, &rfds, NULL, NULL, NULL);
} while (ret < 0 && errno == EINTR);
assert(ret != 0);
if (ret < 0)
return ret;