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cgroups-agent: connect stdin/stdout/stderr to /dev/null

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Inspired by https://github.com/systemd/systemd/pull/24024 this is
another user mode helper, where this might be an issue. hence let's
rather be safe than sorry, and also connect stdin/stdout/stderr
explicitly with /dev/null.
This commit is contained in:
Lennart Poettering
2022-07-15 11:02:40 +02:00
parent 81b739d258
commit 50492ce815
1 changed files with 7 additions and 0 deletions
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7
src/cgroups-agent/cgroups-agent.c
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@@ -16,6 +16,13 @@ int main(int argc, char *argv[]) {
_cleanup_close_ int fd = -1; _cleanup_close_ int fd = -1;
ssize_t n; ssize_t n;
size_t l; size_t l;
int r;
r = rearrange_stdio(-1, -1, -1);
if (r < 0) {
log_error_errno(r, "Failed to connect stdin/stdout/stderr with /dev/null: %m");
return EXIT_FAILURE;
}
if (argc != 2) { if (argc != 2) {
log_error("Incorrect number of arguments."); log_error("Incorrect number of arguments.");