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subdaemon: close unused fds when creating subdaemon.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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parent
2f9b04b0d9
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@ -78,6 +78,7 @@ static int subdaemon(const char *dir, const char *name,
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if (childpid == 0) {
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int fdnum = 3;
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long max;
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if (reqfd)
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close(childreq[0]);
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@ -103,6 +104,11 @@ static int subdaemon(const char *dir, const char *name,
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goto child_errno_fail;
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fdnum++;
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}
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/* Make (fairly!) sure all other fds are closed. */
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max = sysconf(_SC_OPEN_MAX);
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for (fd = fdnum; fd < max; fd++)
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close(fd);
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execl(path_join(NULL, dir, name), name, NULL);
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child_errno_fail:
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