* Loads the console font, and possibly the corresponding screen map(s).
* (Adapted for busybox by Matej Vela.)
*/
-#include "internal.h"
+#include "busybox.h"
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
-#include <sys/stat.h>
#include <dirent.h>
#include <errno.h>
#include <sys/ioctl.h>
#define PSF_MAXMODE 0x03
#define PSF_SEPARATOR 0xFFFF
-static const char loadfont_usage[] = "loadfont\n"
- "\n" "\tLoad a console font from standard input.\n" "\n";
-
struct psf_header {
unsigned char magic1, magic2; /* Magic number */
unsigned char mode; /* PSF font mode */
{
int fd;
+ if (argc != 1)
+ usage(loadfont_usage);
+
fd = open("/dev/tty0", O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "Error opening /dev/tty0: %s\n", strerror(errno));
- return 1;
- }
+ if (fd < 0)
+ perror_msg_and_die("Error opening /dev/tty0");
loadnewfont(fd);
- return 0;
+ return EXIT_SUCCESS;
}
static void do_loadfont(int fd, char *inbuf, int unit, int fontsize)
memset(buf, 0, sizeof(buf));
- if (unit < 1 || unit > 32) {
- fprintf(stderr, "Bad character size %d\n", unit);
- exit(1);
- }
+ if (unit < 1 || unit > 32)
+ error_msg_and_die("Bad character size %d\n", unit);
for (i = 0; i < fontsize; i++)
memcpy(buf + (32 * i), inbuf + (unit * i), unit);
if (ioctl(fd, PIO_FONTX, &cfd) == 0)
return; /* success */
- perror("PIO_FONTX ioctl error (trying PIO_FONT)");
+ perror_msg("PIO_FONTX ioctl error (trying PIO_FONT)");
}
#endif
- if (ioctl(fd, PIO_FONT, buf)) {
- perror("PIO_FONT ioctl error");
- exit(1);
- }
+ if (ioctl(fd, PIO_FONT, buf))
+ perror_msg_and_die("PIO_FONT ioctl error");
}
static void
u_short unicode;
maxct = tailsz; /* more than enough */
- up = (struct unipair *) malloc(maxct * sizeof(struct unipair));
+ up = (struct unipair *) xmalloc(maxct * sizeof(struct unipair));
- if (!up) {
- fprintf(stderr, "Out of memory?\n");
- exit(1);
- }
for (glyph = 0; glyph < fontsize; glyph++) {
while (tailsz >= 2) {
unicode = (((u_short) inbuf[1]) << 8) + inbuf[0];
if (ioctl(fd, PIO_UNIMAPCLR, &advice)) {
#ifdef ENOIOCTLCMD
if (errno == ENOIOCTLCMD) {
- fprintf(stderr, "It seems this kernel is older than 1.1.92\n");
- fprintf(stderr, "No Unicode mapping table loaded.\n");
+ error_msg("It seems this kernel is older than 1.1.92\n");
+ error_msg_and_die("No Unicode mapping table loaded.\n");
} else
#endif
- perror("PIO_UNIMAPCLR");
- exit(1);
+ perror_msg_and_die("PIO_UNIMAPCLR");
}
ud.entry_ct = ct;
ud.entries = up;
/* change advice parameters */
}
#endif
- perror("PIO_UNIMAP");
- exit(1);
+ perror_msg_and_die("PIO_UNIMAP");
}
}
{
int unit;
char inbuf[32768]; /* primitive */
- int inputlth, offset;
+ unsigned int inputlth, offset;
/*
* We used to look at the length of the input file
* just read the entire file.
*/
inputlth = fread(inbuf, 1, sizeof(inbuf), stdin);
- if (ferror(stdin)) {
- perror("Error reading input font");
- exit(1);
- }
+ if (ferror(stdin))
+ perror_msg_and_die("Error reading input font");
/* use malloc/realloc in case of giant files;
maybe these do not occur: 16kB for the font,
and 16kB for the map leaves 32 unicode values
for each font position */
- if (!feof(stdin)) {
- perror("Font too large");
- exit(1);
- }
+ if (!feof(stdin))
+ perror_msg_and_die("Font too large");
/* test for psf first */
{
struct psf_header psfhdr;
int fontsize;
int hastable;
- int head0, head;
+ unsigned int head0, head;
if (inputlth < sizeof(struct psf_header))
goto no_psf;
if (!PSF_MAGIC_OK(psfhdr))
goto no_psf;
- if (psfhdr.mode > PSF_MAXMODE) {
- fprintf(stderr, "Unsupported psf file mode\n");
- exit(1);
- }
+ if (psfhdr.mode > PSF_MAXMODE)
+ error_msg_and_die("Unsupported psf file mode\n");
fontsize = ((psfhdr.mode & PSF_MODE512) ? 512 : 256);
#if !defined( PIO_FONTX ) || defined( __sparc__ )
- if (fontsize != 256) {
- fprintf(stderr, "Only fontsize 256 supported\n");
- exit(1);
- }
+ if (fontsize != 256)
+ error_msg_and_die("Only fontsize 256 supported\n");
#endif
hastable = (psfhdr.mode & PSF_MODEHASTAB);
unit = psfhdr.charsize;
head0 = sizeof(struct psf_header);
head = head0 + fontsize * unit;
- if (head > inputlth || (!hastable && head != inputlth)) {
- fprintf(stderr, "Input file: bad length\n");
- exit(1);
- }
+ if (head > inputlth || (!hastable && head != inputlth))
+ error_msg_and_die("Input file: bad length\n");
do_loadfont(fd, inbuf + head0, unit, fontsize);
if (hastable)
do_loadtable(fd, inbuf + head, inputlth - head, fontsize);
unit = 16;
} else {
/* bare font */
- if (inputlth & 0377) {
- fprintf(stderr, "Bad input file size\n");
- exit(1);
- }
+ if (inputlth & 0377)
+ error_msg_and_die("Bad input file size\n");
offset = 0;
unit = inputlth / 256;
}