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unix: fix potential bug if dup2 fails in uv_spawn

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PR-URL: https://github.com/libuv/libuv/pull/309
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit is contained in:
Saúl Ibarra Corretgé 2015-04-10 12:26:49 +02:00
parent 009bbad4e7
commit 09cdc923c2
1 changed files with 6 additions and 1 deletions
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7
src/unix/process.c
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@ -319,7 +319,12 @@ static void uv__process_child_init(const uv_process_options_t* options,
if (fd == use_fd)
uv__cloexec(use_fd, 0);
else
dup2(use_fd, fd);
fd = dup2(use_fd, fd);
if (fd == -1) {
uv__write_int(error_fd, -errno);
_exit(127);
}
if (fd <= 2)
uv__nonblock(fd, 0);