Annotation of prex/usr/bin/dmesg/dmesg.c, Revision 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:
! 32: #include <unistd.h>
! 33: #include <stdio.h>
! 34: #include <stdlib.h>
! 35: #include <termios.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: fprintf(stderr, "dmesg: not supported\n");
! 51: exit(1);
! 52: }
! 53:
! 54: if ((buf = malloc(size)) == NULL)
! 55: exit(1);
! 56:
! 57: if (sys_debug(DCMD_GETLOG, buf) != 0) {
! 58: free(buf);
! 59: exit(1);
! 60: }
! 61: print_msg(buf, size);
! 62: free(buf);
! 63: return 0;
! 64: }
! 65:
! 66: static int
! 67: print_msg(char *buf, int bufsize)
! 68: {
! 69: struct winsize ws;
! 70: int i, row, maxrow;
! 71:
! 72: /* Get screen size */
! 73: maxrow = 79;
! 74: if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == 0)
! 75: maxrow = (int)ws.ws_row - 1;
! 76:
! 77: row = 0;
! 78: for (i = 0; i < bufsize; i++) {
! 79: if (*buf == '\0')
! 80: break;
! 81: if (*buf == '\n')
! 82: row++;
! 83: putc(*buf, stdout);
! 84: if (row >= maxrow) {
! 85: printf("--More-- ");
! 86: getc(stdin);
! 87: putchar('\n');
! 88: row = 0;
! 89: }
! 90: buf++;
! 91: }
! 92: return 0;
! 93: }
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