FreeCalypso > hg > freecalypso-tools
view loadtools/flutil.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 | 135de08c5d74 |
children |
line wrap: on
line source
/* * Miscellaneous utility functions for flash support */ #include <sys/types.h> #include <stdio.h> #include <stdint.h> #include <stdlib.h> #include "flash.h" extern struct flash_bank_info flash_bank_info[2]; get_flash_sector_table(bi) struct flash_bank_info *bi; { struct flash_geom *geom; struct flash_region_desc *reg; struct sector_info *sp; uint32_t offset; int nr, i; if (bi->sectors) return(0); geom = bi->geom; sp = (struct sector_info *) malloc(sizeof(struct sector_info) * (geom->total_sectors + 1)); if (!sp) { fprintf(stderr, "unable to malloc buffer for flash sector table\n"); return(-1); } bi->sectors = sp; /* now fill it */ offset = 0; for (nr = 0; nr < geom->nregions; nr++) { reg = geom->regions + nr; for (i = 0; i < reg->nsectors; i++) { sp->start = offset; sp->size = reg->sector_size; sp++; offset += reg->sector_size; } } /* sanity checks */ if (sp - bi->sectors != geom->total_sectors) { fprintf(stderr, "BUG in get_flash_sector_table(): wrong # of sectors at the end\n"); abort(); } if (offset != geom->total_size) { fprintf(stderr, "BUG in get_flash_sector_table(): wrong offset at the end\n"); abort(); } /* finish */ sp->start = 0; sp->size = 0; return(0); } flashcmd_sectors(argc, argv, bank) char **argv; { struct flash_bank_info *bi; struct sector_info *sp; if (argc > 2) { fprintf(stderr, "error: too many arguments\n"); return(-1); } if (flash_detect(bank, 0) < 0) return(-1); bi = flash_bank_info + bank; if (get_flash_sector_table(bi) < 0) return(-1); printf("%u sectors in flash bank %d:\n", bi->geom->total_sectors, bank); printf("Offset Size\n"); for (sp = bi->sectors; sp->size; sp++) printf("%08lX %lx\n", (u_long) sp->start, (u_long) sp->size); return(0); } get_flash_sector_range(bi, useroff, userlen, startp, endp) struct flash_bank_info *bi; u_long useroff, userlen; struct sector_info **startp, **endp; { struct sector_info *sp; uint32_t remlen; for (sp = bi->sectors; sp->size; sp++) if (sp->start == useroff) break; if (!sp->size) { fprintf(stderr, "error: specified offset not aligned to a flash sector boundary\n"); return(-1); } *startp = sp; for (remlen = userlen; remlen; ) { if (remlen < sp->size) { fprintf(stderr, "error: specified length not aligned to a flash sector boundary\n"); return(-1); } remlen -= sp->size; sp++; } *endp = sp; return(0); }