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setfont: new applet by Vladimir

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This commit is contained in:
Denis Vlasenko 2008-08-17 14:12:26 +00:00
parent eb084779d7
commit c8d02aa959
5 changed files with 110 additions and 77 deletions
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6
console-tools/Config.in
View File

@ -95,6 +95,12 @@ config FEATURE_SETCONSOLE_LONG_OPTIONS
help
Support long options for the setconsole applet.
config SETFONT
bool "setfont"
default n
help
Allows to load console screen map. Useful for i18n.
config SETKEYCODES
bool "setkeycodes"
default n

1
console-tools/Kbuild
View File

@ -16,5 +16,6 @@ lib-$(CONFIG_LOADKMAP) += loadkmap.o
lib-$(CONFIG_OPENVT) += openvt.o
lib-$(CONFIG_RESET) += reset.o
lib-$(CONFIG_RESIZE) += resize.o
lib-$(CONFIG_SETFONT) += loadfont.o
lib-$(CONFIG_SETKEYCODES) += setkeycodes.o
lib-$(CONFIG_SETLOGCONS) += setlogcons.o

166
console-tools/loadfont.c
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@ -26,7 +26,7 @@ struct psf_header {
unsigned char charsize; /* Character size */
};
#define PSF_MAGIC_OK(x) ((x).magic1 == PSF_MAGIC1 && (x).magic2 == PSF_MAGIC2)
#define PSF_MAGIC_OK(x) ((x)->magic1 == PSF_MAGIC1 && (x)->magic2 == PSF_MAGIC2)
static void do_loadfont(int fd, unsigned char *inbuf, int unit, int fontsize)
{
@ -37,7 +37,6 @@ static void do_loadfont(int fd, unsigned char *inbuf, int unit, int fontsize)
bb_error_msg_and_die("bad character size %d", unit);
buf = xzalloc(16 * 1024);
/*memset(buf, 0, 16 * 1024);*/
for (i = 0; i < fontsize; i++)
memcpy(buf + (32 * i), inbuf + (unit * i), unit);
@ -58,8 +57,7 @@ static void do_loadfont(int fd, unsigned char *inbuf, int unit, int fontsize)
free(buf);
}
static void
do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize)
static void do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize)
{
struct unimapinit advice;
struct unimapdesc ud;
@ -96,86 +94,104 @@ do_loadtable(int fd, unsigned char *inbuf, int tailsz, int fontsize)
xioctl(fd, PIO_UNIMAP, &ud);
}
static void loadnewfont(int fd)
static void do_load(int fd, struct psf_header *psfhdr, size_t len)
{
enum { INBUF_SIZE = 32*1024 + 1 };
int unit;
unsigned inputlth, offset;
/* Was on stack, but 32k is a bit too much: */
unsigned char *inbuf = xmalloc(INBUF_SIZE);
int fontsize;
int hastable;
unsigned head0, head = head;
/* test for psf first */
if (len >= sizeof(struct psf_header) && PSF_MAGIC_OK(psfhdr)) {
if (psfhdr->mode > PSF_MAXMODE)
bb_error_msg_and_die("unsupported psf file mode");
fontsize = ((psfhdr->mode & PSF_MODE512) ? 512 : 256);
#if !defined(PIO_FONTX) || defined(__sparc__)
if (fontsize != 256)
bb_error_msg_and_die("only fontsize 256 supported");
#endif
hastable = (psfhdr->mode & PSF_MODEHASTAB);
unit = psfhdr->charsize;
head0 = sizeof(struct psf_header);
head = head0 + fontsize * unit;
if (head > len || (!hastable && head != len))
bb_error_msg_and_die("input file: bad length");
} else {
/* file with three code pages? */
if (len == 9780) {
head0 = 40;
unit = 16;
} else {
/* bare font */
if (len & 0377)
bb_error_msg_and_die("input file: bad length");
head0 = 0;
unit = len / 256;
}
fontsize = 256;
hastable = 0;
}
do_loadfont(fd, (unsigned char *)psfhdr + head0, unit, fontsize);
if (hastable)
do_loadtable(fd, (unsigned char *)psfhdr + head, len - head, fontsize);
}
#if ENABLE_LOADFONT
int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int loadfont_main(int argc UNUSED_PARAM, char **argv)
{
size_t len;
struct psf_header *psfhdr;
// no arguments allowed!
opt_complementary = "=0";
getopt32(argv, "");
/*
* We used to look at the length of the input file
* with stat(); now that we accept compressed files,
* just read the entire file.
*/
inputlth = full_read(STDIN_FILENO, inbuf, INBUF_SIZE);
if (inputlth < 0)
len = 32*1024; // can't be larger
psfhdr = (struct psf_header *) xmalloc_read(STDIN_FILENO, &len);
// xmalloc_open_zipped_read_close(filename, &len);
if (!psfhdr)
bb_perror_msg_and_die("error reading input font");
if (inputlth >= INBUF_SIZE)
bb_error_msg_and_die("font too large");
/* test for psf first */
{
struct psf_header psfhdr;
int fontsize;
int hastable;
unsigned head0, head;
if (inputlth < sizeof(struct psf_header))
goto no_psf;
psfhdr = *(struct psf_header *) &inbuf[0];
if (!PSF_MAGIC_OK(psfhdr))
goto no_psf;
if (psfhdr.mode > PSF_MAXMODE)
bb_error_msg_and_die("unsupported psf file mode");
fontsize = ((psfhdr.mode & PSF_MODE512) ? 512 : 256);
#if !defined(PIO_FONTX) || defined(__sparc__)
if (fontsize != 256)
bb_error_msg_and_die("only fontsize 256 supported");
#endif
hastable = (psfhdr.mode & PSF_MODEHASTAB);
unit = psfhdr.charsize;
head0 = sizeof(struct psf_header);
head = head0 + fontsize * unit;
if (head > inputlth || (!hastable && head != inputlth))
bb_error_msg_and_die("input file: bad length");
do_loadfont(fd, inbuf + head0, unit, fontsize);
if (hastable)
do_loadtable(fd, inbuf + head, inputlth - head, fontsize);
return;
}
no_psf:
/* file with three code pages? */
if (inputlth == 9780) {
offset = 40;
unit = 16;
} else {
/* bare font */
if (inputlth & 0377)
bb_error_msg_and_die("bad input file size");
offset = 0;
unit = inputlth / 256;
}
do_loadfont(fd, inbuf + offset, unit, 256);
}
int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int loadfont_main(int argc, char **argv UNUSED_PARAM)
{
int fd;
if (argc != 1)
bb_show_usage();
fd = get_console_fd_or_die();
loadnewfont(fd);
do_load(get_console_fd_or_die(), psfhdr, len);
return EXIT_SUCCESS;
}
#endif
#if ENABLE_SETFONT
int setfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int setfont_main(int argc UNUSED_PARAM, char **argv)
{
size_t len;
struct psf_header *psfhdr;
char *mapfilename;
int fd;
opt_complementary = "=1";
getopt32(argv, "m:", &mapfilename);
argv += optind;
// load font
len = 32*1024; // can't be larger
psfhdr = (struct psf_header *) xmalloc_open_zipped_read_close(*argv, &len);
fd = get_console_fd_or_die();
do_load(fd, psfhdr, len);
// load the screen map, if any
if (option_mask32 & 1) { // -m
void *map = xmalloc_open_zipped_read_close(mapfilename, &len);
if (len == E_TABSZ || len == 2*E_TABSZ) {
xioctl(fd, (len == 2*E_TABSZ) ? PIO_UNISCRNMAP : PIO_SCRNMAP, map);
}
}
return EXIT_SUCCESS;
}
#endif

3
include/applets.h
View File

@ -220,7 +220,7 @@ USE_SETARCH(APPLET_ODDNAME(linux64, setarch, _BB_DIR_BIN, _BB_SUID_NEVER, linux6
USE_FEATURE_INITRD(APPLET_ODDNAME(linuxrc, init, _BB_DIR_ROOT, _BB_SUID_NEVER, linuxrc))
USE_LN(APPLET_NOEXEC(ln, ln, _BB_DIR_BIN, _BB_SUID_NEVER, ln))
USE_LOAD_POLICY(APPLET(load_policy, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_LOADFONT(APPLET(loadfont, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_LOADFONT(APPLET(loadfont, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_LOADKMAP(APPLET(loadkmap, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_LOGGER(APPLET(logger, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_LOGIN(APPLET(login, _BB_DIR_BIN, _BB_SUID_ALWAYS))
@ -319,6 +319,7 @@ USE_SETARCH(APPLET(setarch, _BB_DIR_BIN, _BB_SUID_NEVER))
USE_SETCONSOLE(APPLET(setconsole, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_SETENFORCE(APPLET(setenforce, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_SETFILES(APPLET(setfiles, _BB_DIR_SBIN, _BB_SUID_NEVER))
USE_SETFONT(APPLET(setfont, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_SETKEYCODES(APPLET(setkeycodes, _BB_DIR_USR_BIN, _BB_SUID_NEVER))
USE_SETLOGCONS(APPLET(setlogcons, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))
USE_SETSEBOOL(APPLET(setsebool, _BB_DIR_USR_SBIN, _BB_SUID_NEVER))

9
include/usage.h
View File

@ -3501,6 +3501,15 @@
"\n -vv Show changes in file labels, if type, role, or user are changing" \
"\n -W Display warnings about entries that had no matching files" \
#define setfont_trivial_usage \
"[-m mapfile] font"
#define setfont_full_usage "\n\n" \
"Load a console font\n" \
"\nOptions:" \
"\n -m mapfile Load console screen map from mapfile"
#define setfont_example_usage \
"$ setfont -m koi8-r /etc/i18n/fontname\n"
#define setkeycodes_trivial_usage \
"SCANCODE KEYCODE..."
#define setkeycodes_full_usage "\n\n" \