Return to dmesg.c CVS log

Up to [local] / prex-old / usr / bin / dmesg

Annotation of prex-old/usr/bin/dmesg/dmesg.c, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 2007, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #include <prex/prex.h>
                     31: #include <sys/ioctl.h>
                     32:
                     33: #include <unistd.h>
                     34: #include <stdio.h>
                     35: #include <stdlib.h>
                     36:
                     37: #ifdef CMDBOX
                     38: #define main(argc, argv)       dmesg_main(argc, argv)
                     39: #endif
                     40:
                     41: static int print_msg(char *buf, int size);
                     42:
                     43: int
                     44: main(int argc, char *argv[])
                     45: {
                     46:        int size;
                     47:        char *buf;
                     48:
                     49:        if (sys_debug(DCMD_LOGSIZE, &size) != 0)
                     50:                exit(1);
                     51:
                     52:        if ((buf = malloc(size)) == NULL)
                     53:                exit(1);
                     54:
                     55:        if (sys_debug(DCMD_GETLOG, buf) != 0) {
                     56:                free(buf);
                     57:                exit(1);
                     58:        }
                     59:        print_msg(buf, size);
                     60:        free(buf);
                     61:        return 0;
                     62: }
                     63:
                     64: static int
                     65: print_msg(char *buf, int size)
                     66: {
                     67:        struct winsize ws;
                     68:        int i, cnt, ignore;
                     69:        int row, maxrow;
                     70:
                     71:        /* Get screen size */
                     72:        maxrow = 79;
                     73:        if (ioctl(STDOUT_FILENO, TIOCGWINSZ, (u_long)&ws) == 0)
                     74:                maxrow = (int)ws.ws_row - 1;
                     75:
                     76:        /* Find message start point */
                     77:        for (i = 0; i < size; i++) {
                     78:                if (buf[i] == -1)
                     79:                        break;
                     80:        }
                     81:        if (i == size)
                     82:                return 1;
                     83:
                     84:        row = 0;
                     85:        ignore = 1;
                     86:        for (cnt = 0; cnt < size; cnt++) {
                     87:                if (buf[i] == '\n') {
                     88:                        row++;
                     89:                        ignore = 0;
                     90:                }
                     91:                if (!ignore)            /* skip first line */
                     92:                        putc(buf[i], stdout);
                     93:                if (++i >= size)
                     94:                        i = 0;
                     95:                if (row >= maxrow) {
                     96:                        printf("--More-- ");
                     97:                        getc(stdin);
                     98:                        putchar('\n');
                     99:                        row = 0;
                    100:                }
                    101:        }
                    102:        return 0;
                    103: }