FreeCalypso > hg > fc-sim-tools
view simtool/erasefile.c @ 47:b0cf75d0bb2d
doc/Serial-SIM-readers article written
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 21 Mar 2021 04:32:18 +0000 |
parents | ddd767f6e15b |
children |
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/* * This module implements the erase-file command. */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "curfile.h" static erase_transparent(fill_byte) { u_char data[255]; unsigned off, cc; int rc; memset(data, fill_byte, 255); for (off = 0; off < curfile_total_size; off += cc) { cc = curfile_total_size - off; if (cc > 255) cc = 255; rc = update_bin_op(off, data, cc); if (rc < 0) return(rc); } return(0); } static erase_records(fill_byte) { u_char data[255]; unsigned recno; int rc; memset(data, fill_byte, curfile_record_len); for (recno = 1; recno <= curfile_record_count; recno++) { rc = update_rec_op(recno, 0x04, data, curfile_record_len); if (rc < 0) return(rc); } return(0); } static erase_cyclic(fill_byte) { u_char data[255]; unsigned count; int rc; memset(data, fill_byte, curfile_record_len); for (count = 0; count < curfile_record_count; count++) { rc = update_rec_op(0, 0x03, data, curfile_record_len); if (rc < 0) return(rc); } return(0); } cmd_erase_file(argc, argv) char **argv; { int file_id, rc; unsigned fill_byte; if (isxdigit(argv[1][0]) && isxdigit(argv[1][1]) && isxdigit(argv[1][2]) && isxdigit(argv[1][3]) && !argv[1][4]) file_id = strtoul(argv[1], 0, 16); else file_id = find_symbolic_file_name(argv[1]); if (file_id < 0) { fprintf(stderr, "error: file ID argument is not a hex value or a recognized symbolic name\n"); return(-1); } rc = select_op(file_id); if (rc < 0) return(rc); rc = parse_ef_select_response(); if (rc < 0) return(rc); if (argc > 2) { fill_byte = strtoul(argv[2], 0, 16); if (fill_byte > 0xFF) { fprintf(stderr, "error: invalid fill byte argument\n"); return(-1); } } else fill_byte = 0xFF; switch (curfile_structure) { case 0x00: /* transparent */ rc = erase_transparent(fill_byte); break; case 0x01: /* record-based */ rc = erase_records(fill_byte); break; case 0x03: /* cyclic */ rc = erase_cyclic(fill_byte); break; } return(rc); }