1 | //===-- Linux implementation of tcgetsid ----------------------------------===// |
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2 | // |
3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
4 | // See https://llvm.org/LICENSE.txt for license information. |
5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
6 | // |
7 | //===----------------------------------------------------------------------===// |
8 | |
9 | #include "src/termios/tcgetsid.h" |
10 | |
11 | #include "src/__support/OSUtil/syscall.h" |
12 | #include "src/__support/common.h" |
13 | #include "src/errno/libc_errno.h" |
14 | |
15 | #include <asm/ioctls.h> // Safe to include without the risk of name pollution. |
16 | #include <sys/syscall.h> // For syscall numbers |
17 | #include <termios.h> |
18 | |
19 | namespace LIBC_NAMESPACE { |
20 | |
21 | LLVM_LIBC_FUNCTION(pid_t, tcgetsid, (int fd)) { |
22 | pid_t sid; |
23 | int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_ioctl, ts: fd, TIOCGSID, ts: &sid); |
24 | if (ret < 0) { |
25 | libc_errno = -ret; |
26 | return -1; |
27 | } |
28 | return sid; |
29 | } |
30 | |
31 | } // namespace LIBC_NAMESPACE |
32 |