FreeCalypso > hg > freecalypso-tools
view loadtools/lacrc32.c @ 921:74d284add54d
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 | 5385aca4d813 |
children |
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/* * This module implements the function for getting a CRC-32 computation * from loadagent. */ #include <sys/types.h> #include <stdio.h> #include <stdint.h> #include <string.h> #include <strings.h> #include <stdlib.h> extern char target_response_line[]; crc32_on_target(area_base, area_len, retptr) u_long area_base, area_len, *retptr; { char arg1[10], arg2[10], *argv[4]; int stat; char *strtoul_endp; sprintf(arg1, "%lx", area_base); sprintf(arg2, "%lx", area_len); argv[0] = "crc32"; argv[1] = arg1; argv[2] = arg2; argv[3] = 0; tpinterf_make_cmd(argv); if (tpinterf_send_cmd() < 0) return(-1); stat = tpinterf_capture_output_oneline(10); /* 10 s timeout */ if (stat != 1) { errout: fprintf(stderr, "error: malformed response to crc32 command\n"); return(-1); } if (strlen(target_response_line) != 8) goto errout; *retptr = strtoul(target_response_line, &strtoul_endp, 16); if (strtoul_endp != target_response_line + 8) goto errout; return(0); }