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| author | Christian Brauner <christian.brauner@ubuntu.com> | 2017-10-08 14:10:46 +0200 |
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| committer | Christian Brauner <christian.brauner@ubuntu.com> | 2017-10-08 17:47:58 +0200 |
| commit | 645ac9aaf89e3311949828546df6334322f48933 (patch) | |
| tree | c3fcdd65127627d5f889060c145f238d953e2b1f /posix/spawnattr_getdefault.c | |
| parent | 98e0742024d4c13c08a6076b3d119c250e7d0118 (diff) | |
| download | glibc-645ac9aaf89e3311949828546df6334322f48933.tar.gz glibc-645ac9aaf89e3311949828546df6334322f48933.tar.xz glibc-645ac9aaf89e3311949828546df6334322f48933.zip | |
openpty: use TIOCGPTPEER to open slave side fd
Newer kernels expose the ioctl TIOCGPTPEER [1] call to userspace which allows to safely allocate a file descriptor for a pty slave based solely on the master file descriptor. This allows us to avoid path-based operations and makes this function a lot safer in the face of devpts mounts in different mount namespaces. [1]: https://patchwork.kernel.org/patch/9760743/ Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
Diffstat (limited to 'posix/spawnattr_getdefault.c')
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