mirror of
https://github.com/apache/nuttx.git
synced 2026-08-23 22:48:18 +00:00
db9531fe96
NuttX has no real session/process-group abstraction, so the TTY layer collapses the foreground process group onto the single dev->pid field (pgrp == pid, one member per group). Extend the controlling-terminal support so portable software (e.g. dropbear, socat) that relies on job-control primitives works without losing the existing NuttX-specific behaviour. Driver (serial.c, pty.c): - TIOCSCTTY now accepts a flag: arg > 0 keeps the historical "target PID in arg" semantics (NSH registers the foreground command it just spawned), while arg == 0 selects the calling task via nxsched_getpid(), matching the POSIX flag convention used by dropbear/socat/apue. This preserves all existing callers and makes the previously-dead arg==0 path deliver SIGINT correctly. - Add TIOCGPGRP/TIOCGSID (return dev->pid) and TIOCSPGRP (set it). - pty.c gains the same handlers against pd_pid and includes nuttx/sched.h for nxsched_getpid(). ioctl numbers (tioctl.h): TIOCGPGRP/TIOCSPGRP/TIOCGSID at 0x37-0x39. libc wrappers: - termios: tcgetpgrp(), tcsetpgrp(), tcgetsid() over the new ioctls. - unistd: setsid()/getsid()/setpgid() stubs consistent with the existing getpgrp()/getpgid() single-session model (sid == pgid == pid; setpgid only succeeds for pgid == pid). Declare the new prototypes in unistd.h (tcgetsid was already in termios.h) and register all sources in the Make.defs/CMakeLists. Group-broadcast signalling (kill(-pgrp)) remains unsupported, so tty signals still target the single dev->pid; a real session/process group model is left as a follow-up. Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com> |
||
|---|---|---|
| .. | ||
| aio | ||
| assert | ||
| audio | ||
| builtin | ||
| ctype | ||
| dirent | ||
| dlfcn | ||
| elf | ||
| errno | ||
| eventfd | ||
| fdt | ||
| fixedmath | ||
| gdbstub | ||
| gnssutils | ||
| grp | ||
| hex2bin | ||
| inttypes | ||
| libgen | ||
| locale | ||
| lzf | ||
| machine | ||
| misc | ||
| net | ||
| netdb | ||
| obstack | ||
| pthread | ||
| pwd | ||
| queue | ||
| regex | ||
| sched | ||
| search | ||
| semaphore | ||
| signal | ||
| spawn | ||
| stdio | ||
| stdlib | ||
| stream | ||
| string | ||
| symtab | ||
| syslog | ||
| termios | ||
| time | ||
| tls | ||
| uio | ||
| unistd | ||
| userfs | ||
| uuid | ||
| wchar | ||
| wctype | ||
| wqueue | ||
| zoneinfo | ||
| .gitignore | ||
| CMakeLists.txt | ||
| Kconfig | ||
| libc.csv | ||
| libc.h | ||
| limits_check.c | ||
| Makefile | ||