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- Rename getpty() to xgetpty() and adjust callers.

Browse Source 
- Rewrite kbd_mode and setconsole
- Introduce and use console_make_active() and xopen_xwrite_close()
- honour buffer-reservation method as set by the user (dumpkmap, loadkmap)
- shrink rtcwake and some console-tools

  Saves about 270 Bytes
This commit is contained in:
Bernhard Reutner-Fischer
2008-05-19 08:18:50 +00:00
parent ee56e013cf
commit ae4342ca3e
18 changed files with 136 additions and 142 deletions
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23
console-tools/openvt.c
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@@ -61,7 +61,8 @@ static int get_vt_fd(void)
for (fd = 0; fd < 3; fd++)
if (!not_vt_fd(fd))
return fd;
/* _only_ O_NONBLOCK: ask for neither read not write perms */
/* _only_ O_NONBLOCK: ask for neither read nor write perms */
/*FIXME: use? device_open(DEV_CONSOLE,0); */
fd = open(DEV_CONSOLE, O_NONBLOCK);
if (fd >= 0 && !not_vt_fd(fd))
return fd;
@@ -93,7 +94,7 @@ static NOINLINE void vfork_child(char **argv)
/* CHILD */
/* Try to make this VT our controlling tty */
setsid(); /* lose old ctty */
ioctl(0, TIOCSCTTY, 0 /* 0: don't forcibly steal */);
ioctl(STDIN_FILENO, TIOCSCTTY, 0 /* 0: don't forcibly steal */);
//bb_error_msg("our sid %d", getsid(0));
//bb_error_msg("our pgrp %d", getpgrp());
//bb_error_msg("VT's sid %d", tcgetsid(0));
@@ -135,14 +136,13 @@ int openvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
sprintf(vtname, VC_FORMAT, vtno);
/* (Try to) clean up stray open fds above fd 2 */
bb_daemonize_or_rexec(DAEMON_CLOSE_EXTRA_FDS | DAEMON_ONLY_SANITIZE, NULL);
close(0);
close(STDIN_FILENO);
/*setsid(); - BAD IDEA: after we exit, child is SIGHUPed... */
xopen(vtname, O_RDWR);
xioctl(0, VT_GETSTATE, &vtstat);
xioctl(STDIN_FILENO, VT_GETSTATE, &vtstat);
if (flags & OPT_s) {
xioctl(0, VT_ACTIVATE, (void*)(ptrdiff_t)vtno);
xioctl(0, VT_WAITACTIVE, (void*)(ptrdiff_t)vtno);
console_make_active(STDIN_FILENO, vtno);
}
if (!argv[0]) {
@@ -153,14 +153,16 @@ int openvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
/*argv[1] = NULL; - already is */
}
xdup2(0, STDOUT_FILENO);
xdup2(0, STDERR_FILENO);
xdup2(STDIN_FILENO, STDOUT_FILENO);
xdup2(STDIN_FILENO, STDERR_FILENO);
#ifdef BLOAT
{
/* Handle -l (login shell) option */
const char *prog = argv[0];
if (flags & OPT_l)
argv[0] = xasprintf("-%s", argv[0]);
}
#endif
vfork_child(argv);
@@ -168,12 +170,11 @@ int openvt_main(int argc ATTRIBUTE_UNUSED, char **argv)
/* We have only one child, wait for it */
safe_waitpid(-1, NULL, 0); /* loops on EINTR */
if (flags & OPT_s) {
xioctl(0, VT_ACTIVATE, (void*)(ptrdiff_t)(vtstat.v_active));
xioctl(0, VT_WAITACTIVE, (void*)(ptrdiff_t)(vtstat.v_active));
console_make_active(STDIN_FILENO, vtstat.v_active);
// Compat: even with -c N (try to) disallocate:
// # /usr/app/kbd-1.12/bin/openvt -f -c 9 -ws sleep 5
// openvt: could not deallocate console 9
xioctl(0, VT_DISALLOCATE, (void*)(ptrdiff_t)vtno);
xioctl(STDIN_FILENO, VT_DISALLOCATE, (void*)(ptrdiff_t)vtno);
}
}
return EXIT_SUCCESS;