File: [local] / prex / usr / bin / dmesg / dmesg.c (download)
Revision 1.1.1.1 (vendor branch), Tue Aug 19 12:46:57 2008 UTC (16 years, 1 month ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_8_BASE, HEAD Changes since 1.1: +0 -0 lines
Initial import of Prex, Portable Real-time Embedded POSIX microkernel system.
I have totally new directions in my development (more focused on real hardware, not virtual one).
Old hacks are available in prex-old module. They will be carefully re-designed and merged soon.
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/*-
* Copyright (c) 2007, Kohsuke Ohtani
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <prex/prex.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#ifdef CMDBOX
#define main(argc, argv) dmesg_main(argc, argv)
#endif
static int print_msg(char *buf, int size);
int
main(int argc, char *argv[])
{
int size;
char *buf;
if (sys_debug(DCMD_LOGSIZE, &size) != 0) {
fprintf(stderr, "dmesg: not supported\n");
exit(1);
}
if ((buf = malloc(size)) == NULL)
exit(1);
if (sys_debug(DCMD_GETLOG, buf) != 0) {
free(buf);
exit(1);
}
print_msg(buf, size);
free(buf);
return 0;
}
static int
print_msg(char *buf, int bufsize)
{
struct winsize ws;
int i, row, maxrow;
/* Get screen size */
maxrow = 79;
if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == 0)
maxrow = (int)ws.ws_row - 1;
row = 0;
for (i = 0; i < bufsize; i++) {
if (*buf == '\0')
break;
if (*buf == '\n')
row++;
putc(*buf, stdout);
if (row >= maxrow) {
printf("--More-- ");
getc(stdin);
putchar('\n');
row = 0;
}
buf++;
}
return 0;
}