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Don't duplicate file descriptors into stdio fds

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beetrees 2022-09-04 10:22:36 +01:00
parent c2d140bd36
commit 0e0756cf0d
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1 changed files with 2 additions and 1 deletions
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library/std/src/os/fd/owned.rs
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@ -104,7 +104,8 @@ impl BorrowedFd<'_> {
#[cfg(target_os = "espidf")] #[cfg(target_os = "espidf")]
let cmd = libc::F_DUPFD; let cmd = libc::F_DUPFD;
let fd = cvt(unsafe { libc::fcntl(self.as_raw_fd(), cmd, 0) })?; // Avoid using file descriptors below 3 as they are used for stdio
let fd = cvt(unsafe { libc::fcntl(self.as_raw_fd(), cmd, 3) })?;
Ok(unsafe { OwnedFd::from_raw_fd(fd) }) Ok(unsafe { OwnedFd::from_raw_fd(fd) })
} }