diff options
Diffstat (limited to 'legacy/busybox/0007-fbsplash-support-console-switching.patch')
| -rw-r--r-- | legacy/busybox/0007-fbsplash-support-console-switching.patch | 182 |
1 files changed, 182 insertions, 0 deletions
diff --git a/legacy/busybox/0007-fbsplash-support-console-switching.patch b/legacy/busybox/0007-fbsplash-support-console-switching.patch new file mode 100644 index 000000000..ef226d009 --- /dev/null +++ b/legacy/busybox/0007-fbsplash-support-console-switching.patch @@ -0,0 +1,182 @@ +From 377e2f20c1034de1195fd900fc637821952cfa49 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi> +Date: Mon, 24 Sep 2012 07:58:29 +0300 +Subject: [PATCH 07/16] fbsplash: support console switching + +--- + miscutils/fbsplash.c | 82 +++++++++++++++++++++++++++++++++++++++++++++++----- + 1 file changed, 75 insertions(+), 7 deletions(-) + +diff --git a/miscutils/fbsplash.c b/miscutils/fbsplash.c +index 5b2e5ac56..bc80f728c 100644 +--- a/miscutils/fbsplash.c ++++ b/miscutils/fbsplash.c +@@ -47,7 +47,7 @@ + //kbuild:lib-$(CONFIG_FBSPLASH) += fbsplash.o + + //usage:#define fbsplash_trivial_usage +-//usage: "-s IMGFILE [-c] [-d DEV] [-i INIFILE] [-f CMD]" ++//usage: "-s IMGFILE [-c] [-d DEV] [-i INIFILE] [-f CMD] [-T tty]" + //usage:#define fbsplash_full_usage "\n\n" + //usage: " -s Image" + //usage: "\n -c Hide cursor" +@@ -57,11 +57,17 @@ + //usage: "\n BAR_R,BAR_G,BAR_B" + //usage: "\n -f Control pipe (else exit after drawing image)" + //usage: "\n commands: 'NN' (% for progress bar) or 'exit'" ++//usage: "\n -T Switch to TTY to hide all console messages" + + #include "libbb.h" + #include "common_bufsiz.h" + #include <linux/fb.h> + ++#include <sys/vt.h> ++#include <sys/ioctl.h> ++#include <linux/tiocl.h> ++#include <linux/kd.h> ++ + /* If you want logging messages on /tmp/fbsplash.log... */ + #define DEBUG 0 + +@@ -75,6 +81,8 @@ struct globals { + unsigned char *addr; // pointer to framebuffer memory + unsigned ns[7]; // n-parameters + const char *image_filename; ++ int silent_tty, fd_tty_s; ++ bool do_not_draw; + struct fb_var_screeninfo scr_var; + struct fb_fix_screeninfo scr_fix; + unsigned bytes_per_pixel; +@@ -485,6 +493,11 @@ static void init(const char *cfg_filename) + config_close(parser); + } + ++static void sighandler(int sig) ++{ ++ ioctl(G.fd_tty_s, VT_RELDISP, sig == SIGUSR1 ? 1 : 2); ++ G.do_not_draw = (sig != SIGUSR2); ++} + + int fbsplash_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; + int fbsplash_main(int argc UNUSED_PARAM, char **argv) +@@ -494,6 +507,9 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) + char *num_buf; + unsigned num; + bool bCursorOff; ++ int fd_tty0, active_vt; ++ struct vt_stat vtstat; ++ struct vt_mode vt; + + INIT_G(); + +@@ -501,8 +517,9 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) + fb_device = "/dev/fb0"; + cfg_filename = NULL; + fifo_filename = NULL; +- bCursorOff = 1 & getopt32(argv, "cs:d:i:f:", +- &G.image_filename, &fb_device, &cfg_filename, &fifo_filename); ++ bCursorOff = 1 & getopt32(argv, "cs:d:i:f:T:", ++ &G.image_filename, &fb_device, &cfg_filename, &fifo_filename, ++ &G.silent_tty); + + // parse configuration file + if (cfg_filename) +@@ -512,11 +529,43 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) + if (!G.image_filename) + bb_show_usage(); + ++ fd_tty0 = get_console_fd_or_die(); ++ if (G.silent_tty) { ++ char buf[16]; ++ ++ /* Initialize TTY */ ++ bb_signals((1LL << SIGUSR1) | (1LL << SIGUSR2), sighandler); ++ snprintf(buf, sizeof(buf), "/dev/tty%d", G.silent_tty); ++ G.fd_tty_s = xopen(buf, O_RDWR | O_NOCTTY); ++ ++ /* Activate TTY */ ++ xioctl(fd_tty0, VT_GETSTATE, &vtstat); ++ active_vt = vtstat.v_active; ++ console_make_active(fd_tty0, G.silent_tty); ++ ++ /* Get notifications on console changes */ ++ vt.mode = VT_PROCESS; ++ vt.waitv = 0; ++ vt.relsig = SIGUSR1; ++ vt.acqsig = SIGUSR2; ++ ioctl(G.fd_tty_s, VT_SETMODE, &vt); ++ ++ /* Redirect all kernel messages to tty1 so that they don't get ++ * printed over our silent splash image. And clear it. */ ++ buf[0] = TIOCL_SETKMSGREDIRECT; ++ buf[1] = 1; ++ ioctl(G.fd_tty_s, TIOCLINUX, buf); ++ full_write(G.fd_tty_s, "\e[H\e[2J" "\e[?17;0c", 7+8); ++ ioctl(G.fd_tty_s, KDSETMODE, KD_GRAPHICS); ++ } else { ++ G.fd_tty_s = STDOUT_FILENO; ++ } ++ + fb_open(fb_device); + + if (fifo_filename && bCursorOff) { + // hide cursor (BEFORE any fb ops) +- full_write(STDOUT_FILENO, ESC"[?25l", 6); ++ full_write(G.fd_tty_s, ESC"[?25l", 6); + } + + fb_drawimage(); +@@ -524,6 +573,7 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) + if (!fifo_filename) + return EXIT_SUCCESS; + ++ sig_block(SIGUSR1); + fp = xfopen_stdin(fifo_filename); + if (fp != stdin) { + // For named pipes, we want to support this: +@@ -539,8 +589,9 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) + // and become an additional writer :) + open(fifo_filename, O_WRONLY); // errors are ignored + } +- + fb_drawprogressbar(0); ++ sig_unblock(SIGUSR1); ++ + // Block on read, waiting for some input. + // Use of <stdio.h> style I/O allows to correctly + // handle a case when we have many buffered lines +@@ -555,12 +606,29 @@ int fbsplash_main(int argc UNUSED_PARAM, char **argv) + #if DEBUG + DEBUG_MESSAGE(itoa(num)); + #endif +- fb_drawprogressbar(num); ++ sig_block(SIGUSR1); ++ if (!G.do_not_draw) ++ fb_drawprogressbar(num); ++ sig_unblock(SIGUSR1); + } + free(num_buf); + } + +- if (bCursorOff) // restore cursor ++ if (G.silent_tty) { ++ usleep(100*1000); ++ ++ ioctl(G.fd_tty_s, VT_RELDISP, 1); ++ ioctl(G.fd_tty_s, KDSETMODE, KD_TEXT); ++ vt.mode = VT_AUTO; ++ vt.waitv = 0; ++ ioctl(G.fd_tty_s, VT_SETMODE, &vt); ++ close(G.fd_tty_s); ++ ++ xioctl(fd_tty0, VT_GETSTATE, &vtstat); ++ if (vtstat.v_active == G.silent_tty) ++ console_make_active(fd_tty0, active_vt); ++ ioctl(fd_tty0, VT_DISALLOCATE, (void *)(ptrdiff_t)G.silent_tty); ++ } else if (bCursorOff) // restore cursor + full_write(STDOUT_FILENO, ESC"[?25h", 6); + + return EXIT_SUCCESS; +-- +2.16.2 + |