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annotate libpwon/duart28c.c @ 921:74d284add54d

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fc-fsio: guard against bogus readdir results from the target If the FFS being operated on contains SE K2x0 extended filenames, readdir will return strings that are bad for printing. We need to guard against this possibility, and also against possible other bogosity that could be sent by other alien firmwares.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 31 Dec 2022 22:55:23 +0000
parents 7d1df6d831e4
children
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7d1df6d831e4 libpwon: added -Pdtr and -Prts support for DUART28C
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1 #include <sys/types.h>
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2 #include <sys/ioctl.h>
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3 #include <stdio.h>
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4 #include <stdlib.h>
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5 #include <string.h>
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6 #include <strings.h>
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7 #include <unistd.h>
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8
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9 extern int target_fd;
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10
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11 int bootctrl_duart28c_mode;
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12 static int mctl_arg;
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13
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14 bootctrl_check_duart28c(bc_name)
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15 char *bc_name;
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16 {
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17 if (!strcmp(bc_name, "dtr")) {
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18 bootctrl_duart28c_mode = 1;
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19 mctl_arg = TIOCM_DTR;
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20 return 1;
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21 }
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22 if (!strcmp(bc_name, "rts")) {
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23 bootctrl_duart28c_mode = 1;
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24 mctl_arg = TIOCM_RTS;
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25 return 1;
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26 }
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27 return 0;
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28 }
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29
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30 void
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31 fork_duart28c_pulse()
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32 {
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33 int i;
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34
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35 i = fork();
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36 if (i < 0) {
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37 perror("fork");
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38 exit(1);
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39 }
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40 if (i)
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41 return;
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42 ioctl(target_fd, TIOCMBIS, &mctl_arg);
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43 usleep(50000);
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44 ioctl(target_fd, TIOCMBIC, &mctl_arg);
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45 exit(0);
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46 }