yukkop
4204d68eed
The hectic logger opens fd 3 as a dup of stderr. Child processes inherit this fd, and daemonized PostgreSQL/PostgREST keeping it open prevents the terminal from returning to the prompt after the spawning script exits. - Add with_closed_fds helper that runs commands in a subshell with fds 3-9 redirected to /dev/null - Inline the helper into both database and postgres-init builds - Wrap pg_ctl start and postgrest with the helper
23 lines
765 B
Bash
23 lines
765 B
Bash
#!/bin/dash
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# with_closed_fds -- run command with leaked file descriptors closed
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#
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# Shell libraries (e.g. hectic logger) may open extra file descriptors
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# (like fd 3 as a dup of stderr). Child processes inherit these fds.
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# Long-running daemons (postgres, postgrest) that keep fd 3 open can
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# prevent the terminal from returning to the prompt even after the
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# spawning script exits.
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#
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# Usage:
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# with_closed_fds pg_ctl -D "$data" -w start
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# with_closed_fds postgrest "$config" > "$log" 2>&1 &
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#
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# Runs the command in a subshell where fds 3-9 are redirected to
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# /dev/null. The parent shell's fd table is untouched.
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with_closed_fds() {
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(
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exec 3>/dev/null 4>/dev/null 5>/dev/null 6>/dev/null 7>/dev/null 8>/dev/null 9>/dev/null
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"$@"
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)
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}
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