view rvinterf/etmsync/fsbasics.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 46ad66a231af
children
line wrap: on
line source

/*
 * Basic FFS2 operations
 */

#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include "etm.h"
#include "ffs.h"
#include "tmffs2.h"
#include "limits.h"
#include "ffslimits.h"
#include "localtypes.h"
#include "localstruct.h"
#include "exitcodes.h"

extern u_char rvi_msg[];
extern int rvi_msg_len;

cmd_ffs2ver()
{
	u_char cmdpkt[4];
	int rc;

	cmdpkt[1] = ETM_FFS2;
	cmdpkt[2] = TMFFS_VERSION;
	rc = etm_pkt_exch(cmdpkt, 2);
	if (rc)
		return(rc);
	if (rvi_msg[3]) {
		printf("FFS2 error %d\n", rvi_msg[3]);
		return(ERROR_TARGET);
	}
	if (rvi_msg_len != 7) {
		printf("error: FFS2 version response has wrong length\n");
		return(ERROR_TARGET);
	}
	printf("FFS2 version: %02X.%02X\n", rvi_msg[5], rvi_msg[4]);
	return(0);
}

void
safe_print_ls_name(name)
	char *name;
{
	char *p;
	int c;

	p = name;
	while (c = *p++) {
		if (c == '\\') {
			putchar('\\');
			putchar('\\');
		} else if (c >= ' ' && c <= '~')
			putchar(c);
		else
			printf("\\x%02X", c);
	}
	putchar('\n');
}

do_ls_short(lsarg)
	char *lsarg;
{
	u_char state[4];
	char namebuf[256];
	int nument, i, rc;

	rc = do_opendir(lsarg, state, &nument);
	if (rc)
		return(rc);
	if (!nument) {
		printf("<empty dir>\n");
		return(0);
	}
	for (i = 0; i < nument; i++) {
		rc = do_readdir(state, namebuf, sizeof namebuf);
		if (rc)
			return(rc);
		safe_print_ls_name(namebuf);
	}
	return(0);
}

cmd_ls(argc, argv)
	char **argv;
{
	if (argc == 2)
		return do_ls_short(argv[1]);
	if (strcmp(argv[1], "-l")) {
		fprintf(stderr, "usage: ls [-l] ffs_pathname\n");
		return(ERROR_USAGE);
	}
	return do_ls_long(argv[2]);
}

cmd_stat(argc, argv)
	char **argv;
{
	struct stat_info stat;
	int rc;
	char *type;

	rc = do_xlstat(argv[1], &stat);
	if (rc)
		return(rc);
	switch (stat.type) {
	case OT_FILE:
		type = "file";
		break;
	case OT_DIR:
		type = "directory";
		break;
	case OT_LINK:
		type = "symlink";
		break;
	default:
		type = "???";
	}
	printf("Type: %s%s\n", type,
		stat.flags & OF_READONLY ? ", read-only" : "");
	printf("inode %x\n", stat.inode);
	printf("size %u, space %u\n", stat.size, stat.space);
	printf("location=%x, block %d\n", stat.location, stat.block);
	return(0);
}