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Diffstat (limited to 'src/nvim/os/pty_process_unix.c')
-rw-r--r--src/nvim/os/pty_process_unix.c417
1 files changed, 0 insertions, 417 deletions
diff --git a/src/nvim/os/pty_process_unix.c b/src/nvim/os/pty_process_unix.c
deleted file mode 100644
index cfa4dcada7..0000000000
--- a/src/nvim/os/pty_process_unix.c
+++ /dev/null
@@ -1,417 +0,0 @@
-// Some of the code came from pangoterm and libuv
-
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/wait.h>
-#include <uv.h>
-
-// forkpty is not in POSIX, so headers are platform-specific
-#if defined(__FreeBSD__) || defined(__DragonFly__)
-# include <libutil.h>
-#elif defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
-# include <util.h>
-#elif defined(__sun)
-# include <fcntl.h>
-# include <signal.h>
-# include <sys/stream.h>
-# include <sys/syscall.h>
-# include <unistd.h>
-#else
-# include <pty.h>
-#endif
-
-#ifdef __APPLE__
-# include <crt_externs.h>
-#endif
-
-#include "auto/config.h"
-#include "klib/klist.h"
-#include "nvim/eval/typval.h"
-#include "nvim/event/defs.h"
-#include "nvim/event/loop.h"
-#include "nvim/event/process.h"
-#include "nvim/log.h"
-#include "nvim/os/fs.h"
-#include "nvim/os/os_defs.h"
-#include "nvim/os/pty_process.h"
-#include "nvim/os/pty_process_unix.h"
-#include "nvim/types_defs.h"
-
-#ifdef INCLUDE_GENERATED_DECLARATIONS
-# include "os/pty_process_unix.c.generated.h"
-#endif
-
-#if defined(__sun) && !defined(HAVE_FORKPTY)
-
-// this header defines STR, just as nvim.h, but it is defined as ('S'<<8),
-// to avoid #undef STR, #undef STR, #define STR ('S'<<8) just delay the
-// inclusion of the header even though it gets include out of order.
-# include <sys/stropts.h>
-
-static int openpty(int *amaster, int *aslave, char *name, struct termios *termp,
- struct winsize *winp)
-{
- int slave = -1;
- int master = open("/dev/ptmx", O_RDWR);
- if (master == -1) {
- goto error;
- }
-
- // grantpt will invoke a setuid program to change permissions
- // and might fail if SIGCHLD handler is set, temporarily reset
- // while running
- void (*sig_saved)(int) = signal(SIGCHLD, SIG_DFL);
- int res = grantpt(master);
- signal(SIGCHLD, sig_saved);
-
- if (res == -1 || unlockpt(master) == -1) {
- goto error;
- }
-
- char *slave_name = ptsname(master);
- if (slave_name == NULL) {
- goto error;
- }
-
- slave = open(slave_name, O_RDWR|O_NOCTTY);
- if (slave == -1) {
- goto error;
- }
-
- // ptem emulates a terminal when used on a pseudo terminal driver,
- // must be pushed before ldterm
- ioctl(slave, I_PUSH, "ptem");
- // ldterm provides most of the termio terminal interface
- ioctl(slave, I_PUSH, "ldterm");
- // ttcompat compatibility with older terminal ioctls
- ioctl(slave, I_PUSH, "ttcompat");
-
- if (termp) {
- tcsetattr(slave, TCSAFLUSH, termp);
- }
- if (winp) {
- ioctl(slave, TIOCSWINSZ, winp);
- }
-
- *amaster = master;
- *aslave = slave;
- // ignoring name, not passed and size is unknown in the API
-
- return 0;
-
-error:
- if (slave != -1) {
- close(slave);
- }
- if (master != -1) {
- close(master);
- }
- return -1;
-}
-
-static int login_tty(int fd)
-{
- setsid();
- if (ioctl(fd, TIOCSCTTY, NULL) == -1) {
- return -1;
- }
-
- dup2(fd, STDIN_FILENO);
- dup2(fd, STDOUT_FILENO);
- dup2(fd, STDERR_FILENO);
- if (fd > STDERR_FILENO) {
- close(fd);
- }
-
- return 0;
-}
-
-static pid_t forkpty(int *amaster, char *name, struct termios *termp, struct winsize *winp)
-{
- int master, slave;
- if (openpty(&master, &slave, name, termp, winp) == -1) {
- return -1;
- }
-
- pid_t pid = fork();
- switch (pid) {
- case -1:
- close(master);
- close(slave);
- return -1;
- case 0:
- close(master);
- login_tty(slave);
- return 0;
- default:
- close(slave);
- *amaster = master;
- return pid;
- }
-}
-
-#endif
-
-/// @returns zero on success, or negative error code
-int pty_process_spawn(PtyProcess *ptyproc)
- FUNC_ATTR_NONNULL_ALL
-{
- // termios initialized at first use
- static struct termios termios_default;
- if (!termios_default.c_cflag) {
- init_termios(&termios_default);
- }
-
- int status = 0; // zero or negative error code (libuv convention)
- Process *proc = (Process *)ptyproc;
- assert(proc->err.s.closed);
- uv_signal_start(&proc->loop->children_watcher, chld_handler, SIGCHLD);
- ptyproc->winsize = (struct winsize){ ptyproc->height, ptyproc->width, 0, 0 };
- uv_disable_stdio_inheritance();
- int master;
- int pid = forkpty(&master, NULL, &termios_default, &ptyproc->winsize);
-
- if (pid < 0) {
- status = -errno;
- ELOG("forkpty failed: %s", strerror(errno));
- return status;
- } else if (pid == 0) {
- init_child(ptyproc); // never returns
- }
-
- // make sure the master file descriptor is non blocking
- int master_status_flags = fcntl(master, F_GETFL);
- if (master_status_flags == -1) {
- status = -errno;
- ELOG("Failed to get master descriptor status flags: %s", strerror(errno));
- goto error;
- }
- if (fcntl(master, F_SETFL, master_status_flags | O_NONBLOCK) == -1) {
- status = -errno;
- ELOG("Failed to make master descriptor non-blocking: %s", strerror(errno));
- goto error;
- }
-
- // Other jobs and providers should not get a copy of this file descriptor.
- if (os_set_cloexec(master) == -1) {
- status = -errno;
- ELOG("Failed to set CLOEXEC on ptmx file descriptor");
- goto error;
- }
-
- if (!proc->in.closed
- && (status = set_duplicating_descriptor(master, &proc->in.uv.pipe))) {
- goto error;
- }
- if (!proc->out.s.closed
- && (status = set_duplicating_descriptor(master, &proc->out.s.uv.pipe))) {
- goto error;
- }
-
- ptyproc->tty_fd = master;
- proc->pid = pid;
- return 0;
-
-error:
- close(master);
- kill(pid, SIGKILL);
- waitpid(pid, NULL, 0);
- return status;
-}
-
-const char *pty_process_tty_name(PtyProcess *ptyproc)
-{
- return ptsname(ptyproc->tty_fd);
-}
-
-void pty_process_resize(PtyProcess *ptyproc, uint16_t width, uint16_t height)
- FUNC_ATTR_NONNULL_ALL
-{
- ptyproc->winsize = (struct winsize){ height, width, 0, 0 };
- ioctl(ptyproc->tty_fd, TIOCSWINSZ, &ptyproc->winsize);
-}
-
-void pty_process_close(PtyProcess *ptyproc)
- FUNC_ATTR_NONNULL_ALL
-{
- pty_process_close_master(ptyproc);
- Process *proc = (Process *)ptyproc;
- if (proc->internal_close_cb) {
- proc->internal_close_cb(proc);
- }
-}
-
-void pty_process_close_master(PtyProcess *ptyproc) FUNC_ATTR_NONNULL_ALL
-{
- if (ptyproc->tty_fd >= 0) {
- close(ptyproc->tty_fd);
- ptyproc->tty_fd = -1;
- }
-}
-
-void pty_process_teardown(Loop *loop)
-{
- uv_signal_stop(&loop->children_watcher);
-}
-
-static void init_child(PtyProcess *ptyproc)
- FUNC_ATTR_NONNULL_ALL
-{
-#if defined(HAVE__NSGETENVIRON)
-# define environ (*_NSGetEnviron())
-#else
- extern char **environ;
-#endif
- // New session/process-group. #6530
- setsid();
-
- signal(SIGCHLD, SIG_DFL);
- signal(SIGHUP, SIG_DFL);
- signal(SIGINT, SIG_DFL);
- signal(SIGQUIT, SIG_DFL);
- signal(SIGTERM, SIG_DFL);
- signal(SIGALRM, SIG_DFL);
-
- Process *proc = (Process *)ptyproc;
- if (proc->cwd && os_chdir(proc->cwd) != 0) {
- ELOG("chdir(%s) failed: %s", proc->cwd, strerror(errno));
- return;
- }
-
- const char *prog = process_get_exepath(proc);
-
- assert(proc->env);
- environ = tv_dict_to_env(proc->env);
- execvp(prog, proc->argv);
- ELOG("execvp(%s) failed: %s", prog, strerror(errno));
-
- _exit(122); // 122 is EXEC_FAILED in the Vim source.
-}
-
-static void init_termios(struct termios *termios) FUNC_ATTR_NONNULL_ALL
-{
- // Taken from pangoterm
- termios->c_iflag = ICRNL|IXON;
- termios->c_oflag = OPOST|ONLCR;
-#ifdef TAB0
- termios->c_oflag |= TAB0;
-#endif
- termios->c_cflag = CS8|CREAD;
- termios->c_lflag = ISIG|ICANON|IEXTEN|ECHO|ECHOE|ECHOK;
-
- // not using cfsetspeed, not available on all platforms
- cfsetispeed(termios, 38400);
- cfsetospeed(termios, 38400);
-
-#ifdef IUTF8
- termios->c_iflag |= IUTF8;
-#endif
-#ifdef NL0
- termios->c_oflag |= NL0;
-#endif
-#ifdef CR0
- termios->c_oflag |= CR0;
-#endif
-#ifdef BS0
- termios->c_oflag |= BS0;
-#endif
-#ifdef VT0
- termios->c_oflag |= VT0;
-#endif
-#ifdef FF0
- termios->c_oflag |= FF0;
-#endif
-#ifdef ECHOCTL
- termios->c_lflag |= ECHOCTL;
-#endif
-#ifdef ECHOKE
- termios->c_lflag |= ECHOKE;
-#endif
-
- termios->c_cc[VINTR] = 0x1f & 'C';
- termios->c_cc[VQUIT] = 0x1f & '\\';
- termios->c_cc[VERASE] = 0x7f;
- termios->c_cc[VKILL] = 0x1f & 'U';
- termios->c_cc[VEOF] = 0x1f & 'D';
- termios->c_cc[VEOL] = _POSIX_VDISABLE;
- termios->c_cc[VEOL2] = _POSIX_VDISABLE;
- termios->c_cc[VSTART] = 0x1f & 'Q';
- termios->c_cc[VSTOP] = 0x1f & 'S';
- termios->c_cc[VSUSP] = 0x1f & 'Z';
- termios->c_cc[VREPRINT] = 0x1f & 'R';
- termios->c_cc[VWERASE] = 0x1f & 'W';
- termios->c_cc[VLNEXT] = 0x1f & 'V';
- termios->c_cc[VMIN] = 1;
- termios->c_cc[VTIME] = 0;
-}
-
-static int set_duplicating_descriptor(int fd, uv_pipe_t *pipe)
- FUNC_ATTR_NONNULL_ALL
-{
- int status = 0; // zero or negative error code (libuv convention)
- int fd_dup = dup(fd);
- if (fd_dup < 0) {
- status = -errno;
- ELOG("Failed to dup descriptor %d: %s", fd, strerror(errno));
- return status;
- }
-
- if (os_set_cloexec(fd_dup) == -1) {
- status = -errno;
- ELOG("Failed to set CLOEXEC on duplicate fd");
- goto error;
- }
-
- status = uv_pipe_open(pipe, fd_dup);
- if (status) {
- ELOG("Failed to set pipe to descriptor %d: %s",
- fd_dup, uv_strerror(status));
- goto error;
- }
- return status;
-
-error:
- close(fd_dup);
- return status;
-}
-
-static void chld_handler(uv_signal_t *handle, int signum)
-{
- int stat = 0;
- int pid;
-
- Loop *loop = handle->loop->data;
-
- kl_iter(WatcherPtr, loop->children, current) {
- Process *proc = (*current)->data;
- do {
- pid = waitpid(proc->pid, &stat, WNOHANG);
- } while (pid < 0 && errno == EINTR);
-
- if (pid <= 0) {
- continue;
- }
-
- if (WIFEXITED(stat)) {
- proc->status = WEXITSTATUS(stat);
- } else if (WIFSIGNALED(stat)) {
- proc->status = 128 + WTERMSIG(stat);
- }
- proc->internal_exit_cb(proc);
- }
-}
-
-PtyProcess pty_process_init(Loop *loop, void *data)
-{
- PtyProcess rv;
- rv.process = process_init(loop, kProcessTypePty, data);
- rv.width = 80;
- rv.height = 24;
- rv.tty_fd = -1;
- return rv;
-}
generated by cgit (git 2.34.1) at 2025-04-29 12:11:06 +0000