FreeCalypso > hg > freecalypso-tools

annotate rvinterf/etmsync/fdcmd.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 e7502631a0f9
children
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1 /*
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2 * File descriptor debug commands
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3 */
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4
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5 #include <sys/types.h>
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6 #include <stdio.h>
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7 #include <stdlib.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include "etm.h"
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11 #include "ffs.h"
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12 #include "tmffs2.h"
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13 #include "limits.h"
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14 #include "localtypes.h"
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15 #include "localstruct.h"
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16 #include "cmdtab.h"
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17 #include "exitcodes.h"
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18
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19 cmd_fd_open(argc, argv)
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20 char **argv;
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21 {
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22 int rc, fd;
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23
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24 rc = fd_open(argv[1], strtoul(argv[2], 0, 16), &fd);
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25 if (rc)
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26 return(rc);
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27 printf("%d\n", fd);
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28 return(0);
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29 }
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30
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31 cmd_fd_read(argc, argv)
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32 char **argv;
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33 {
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34 u_char databuf[MAX_READ_DATA];
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35 int rc, sz, off, l;
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36
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37 rc = fd_read(strtoul(argv[1], 0, 0), databuf, strtoul(argv[2], 0, 0),
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38 &sz);
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39 if (rc)
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40 return(rc);
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41 printf("%d bytes read\n", sz);
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42 for (off = 0; off < sz; off += 16) {
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43 l = sz - off;
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44 if (l > 16)
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45 l = 16;
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46 hexdump_line(off, databuf + off, l);
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47 }
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48 return(0);
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49 }
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50
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51 cmd_fd_close(argc, argv)
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52 char **argv;
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53 {
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54 return fd_close(strtoul(argv[1], 0, 0));
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55 }
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56
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57 struct cmdtab fd_cmds[] = {
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58 {"close", 1, 1, cmd_fd_close},
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59 {"open", 2, 2, cmd_fd_open},
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60 {"read", 2, 2, cmd_fd_read},
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61 {0, 0, 0, 0}
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62 };
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63
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64 cmd_fd(argc, argv)
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65 char **argv;
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66 {
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67 struct cmdtab *tp;
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68 int extargs;
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69
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70 for (tp = fd_cmds; tp->cmd; tp++)
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71 if (!strcmp(tp->cmd, argv[1]))
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72 break;
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73 if (!tp->func) {
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74 fprintf(stderr, "error: no such fd command\n");
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75 return(ERROR_USAGE);
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76 }
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77 extargs = argc - 2;
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78 if (extargs > tp->maxargs) {
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79 fprintf(stderr, "error: too many arguments\n");
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80 return(ERROR_USAGE);
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81 }
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82 if (extargs < tp->minargs) {
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83 fprintf(stderr, "error: too few arguments\n");
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84 return(ERROR_USAGE);
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85 }
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86 return tp->func(argc - 1, argv + 1);
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87 }