FreeCalypso > hg > freecalypso-tools
view loadtools/hwparam.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 | 0dd2c87c1b63 |
children |
line wrap: on
line source
/* * This module contains the code that reads the hardware parameter files * specified with -h or -H, and sets variables for later use by other code. */ #include <sys/param.h> #include <stdio.h> #include <ctype.h> #include <string.h> #include <strings.h> #include <stdlib.h> extern char default_helpers_dir[]; extern void set_boot_reflash_hack(); extern void set_default_exit_mode(); extern void set_flash_config(); char hw_init_script[128]; static void handle_compal_stage(arg, filename_for_errs, lineno_for_errs) char *arg; char *filename_for_errs; int lineno_for_errs; { char *cp; while (isspace(*arg)) arg++; if (!*arg) { fprintf(stderr, "%s line %d: compal-stage setting requires an argument\n", filename_for_errs, lineno_for_errs); exit(1); } for (cp = arg; *cp && !isspace(*cp); cp++) ; *cp = '\0'; set_compalstage_short(arg); } static void handle_init_script(arg, filename_for_errs, lineno_for_errs) char *arg; char *filename_for_errs; int lineno_for_errs; { char *cp; while (isspace(*arg)) arg++; if (!*arg) { fprintf(stderr, "%s line %d: init-script setting requires an argument\n", filename_for_errs, lineno_for_errs); exit(1); } for (cp = arg; *cp && !isspace(*cp); cp++) ; *cp = '\0'; if (cp - arg > sizeof(hw_init_script) - 1) { fprintf(stderr, "%s line %d: init-script argument is too long (buffer overflow)\n", filename_for_errs, lineno_for_errs); exit(1); } strcpy(hw_init_script, arg); } static void handle_pll_config(arg, filename_for_errs, lineno_for_errs) char *arg; char *filename_for_errs; int lineno_for_errs; { int mult, div; while (isspace(*arg)) arg++; if (!isdigit(*arg)) { inv: fprintf(stderr, "%s line %d: pll-config argument must be M/N\n", filename_for_errs, lineno_for_errs); exit(1); } mult = atoi(arg); arg++; if (isdigit(*arg)) arg++; if (*arg++ != '/') goto inv; if (!isdigit(*arg)) goto inv; div = atoi(arg); arg++; if (*arg && !isspace(*arg)) goto inv; if (mult < 0 || mult > 31 || div < 1 || div > 4) { fprintf(stderr, "%s line %d: pll-config argument is out of range\n", filename_for_errs, lineno_for_errs); exit(1); } set_romload_pll_conf((mult << 2) | (div - 1)); } static void handle_rhea_cntl(arg, filename_for_errs, lineno_for_errs) char *arg; char *filename_for_errs; int lineno_for_errs; { int byte; while (isspace(*arg)) arg++; if (arg[0] == '0' && (arg[1] == 'x' || arg[1] == 'X')) arg += 2; byte = decode_hex_byte(arg); if (byte < 0 || arg[2] && !isspace(arg[2])) { fprintf(stderr, "%s line %d: rhea-cntl argument must be a hex byte value\n", filename_for_errs, lineno_for_errs); exit(1); } set_romload_rhea_cntl(byte); } static struct cmdtab { char *name; void (*func)(); } cmdtab[] = { {"boot-reflash-hack", set_boot_reflash_hack}, {"compal-stage", handle_compal_stage}, {"exit-mode", set_default_exit_mode}, {"flash", set_flash_config}, {"init-script", handle_init_script}, {"pll-config", handle_pll_config}, {"rhea-cntl", handle_rhea_cntl}, {0, 0} }; void read_hwparam_file_fullpath(filename) char *filename; { FILE *f; char linebuf[512]; int lineno; char *cp, *np; struct cmdtab *tp; f = fopen(filename, "r"); if (!f) { perror(filename); exit(1); } for (lineno = 1; fgets(linebuf, sizeof linebuf, f); lineno++) { for (cp = linebuf; isspace(*cp); cp++) ; if (!*cp || *cp == '#') continue; for (np = cp; *cp && !isspace(*cp); cp++) ; if (*cp) *cp++ = '\0'; for (tp = cmdtab; tp->name; tp++) if (!strcmp(tp->name, np)) break; if (tp->func) tp->func(cp, filename, lineno); else { fprintf(stderr, "%s line %d: setting \"%s\" not understood\n", filename, lineno, np); exit(1); } } fclose(f); } void read_hwparam_file_shortname(confname) char *confname; { char pathname[MAXPATHLEN]; sprintf(pathname, "%s/%s.config", default_helpers_dir, confname); read_hwparam_file_fullpath(pathname); }