Exemple #1
0
/* Set standard error to ARGV[0].  Optionally, ARGV[1] may specify the
   file access mode (see str2flags).  The default is O_RDONLY */
error_t
cmd_stderr (pid_t pid, mach_port_t msgport, int argc, char *argv[])
{
  error_t err;
  int flags = str2flags (argc > 2 ? argv[2] : "w");
  file_t file = file_name_lookup (argv[0], flags, 0666);
  if (file == MACH_PORT_NULL)
    return errno;
  err = do_setfd (pid, msgport, STDERR_FILENO, file);
  if (err)
    mach_port_deallocate (mach_task_self (), file);
  return err;
}
Exemple #2
0
static unsigned int
call_syscall(struct syscall_desc *scall, char *argv[])
{
	struct stat64 sb;
	struct utimbuf ut;
	long long flags;
	unsigned int i;
	char *endp;
	int rval;
	int more;
	union {
		char *str;
		long long num;
	} args[MAX_ARGS];

	more = 0;
	/*
	 * Verify correctness of the arguments.
	 */
	for (i = 0; i < sizeof(args)/sizeof(args[0]); i++) {
		if (scall->sd_args[i] == TYPE_NONE) {
			if (argv[i] == NULL || strcmp(argv[i], ":") == 0)
				break;
			fprintf(stderr, "too many arguments [%s]\n", argv[i]);
			exit(1);
		} else {
			if (argv[i] == NULL || strcmp(argv[i], ":") == 0) {
				if (scall->sd_args[i] & TYPE_OPTIONAL) {
					args[i].str = NULL;
					break;
				}
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			if ((scall->sd_args[i] & TYPE_MASK) == TYPE_STRING) {
				if (strcmp(argv[i], "NULL") == 0)
					args[i].str = NULL;
				else if (strcmp(argv[i], "DEADCODE") == 0)
					args[i].str = (void *)0xdeadc0de;
				else
					args[i].str = argv[i];
			} else if ((scall->sd_args[i] & TYPE_MASK)
						== TYPE_NUMBER) {
				args[i].num = strtoll(argv[i], &endp, 0);
				if (*endp != '\0' && !isspace((unsigned char)*endp)) {
					fprintf(stderr, "invalid argument %u, number expected [%s]\n", i, endp);
					exit(1);
				}
			} else if ((scall->sd_args[i] & TYPE_MASK) ==
			    TYPE_DESCRIPTOR) {
				if (strcmp(argv[i], "AT_FDCWD") == 0) {
					args[i].num = AT_FDCWD;
				} else if (strcmp(argv[i], "BADFD") == 0) {
					/* In case AT_FDCWD is -1 on some systems... */
					if (AT_FDCWD == -1)
						args[i].num = -2;
					else
						args[i].num = -1;
				} else {
					int pos;

					pos = strtoll(argv[i], &endp, 0);
					if (*endp != '\0' &&
					    !isspace((unsigned char)*endp)) {
						fprintf(stderr,
						    "invalid argument %u, number expected [%s]\n",
						    i, endp);
						exit(1);
					}
					args[i].num = descriptor_get(pos);
				}
			}
		}
	}
	/*
	 * Call the given syscall.
	 */
#define	NUM(n)	(args[(n)].num)
#define	STR(n)	(args[(n)].str)
	switch (scall->sd_action) {
	case ACTION_OPEN:
		flags = str2flags(open_flags, STR(1));
		if (flags & O_CREAT) {
			if (i == 2) {
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			rval = open(STR(0), flags, (mode_t)NUM(2));
		} else {
			if (i == 3) {
				fprintf(stderr, "too many arguments\n");
				exit(1);
			}
			rval = open(STR(0), flags);
		}
		if (rval >= 0) {
			more = argv[i] && !strcmp(argv[i], ":");
			descriptor_add(rval);
		}
		break;
	case ACTION_CREATE:
		rval = open(STR(0), O_CREAT | O_EXCL, NUM(1));
		if (rval >= 0) {
			more = argv[i] && !strcmp(argv[i], ":");
			descriptor_add(rval);
		}
		break;
	case ACTION_UNLINK:
		rval = unlink(STR(0));
		break;
	case ACTION_MKDIR:
		rval = mkdir(STR(0), NUM(1));
		break;
	case ACTION_RMDIR:
		rval = rmdir(STR(0));
		break;
	case ACTION_LINK:
		rval = link(STR(0), STR(1));
		break;
	case ACTION_SYMLINK:
		rval = symlink(STR(0), STR(1));
		break;
	case ACTION_RENAME:
		rval = rename(STR(0), STR(1));
		break;
	case ACTION_MKFIFO:
		rval = mkfifo(STR(0), NUM(1));
		break;
	case ACTION_CHMOD:
		rval = chmod(STR(0), NUM(1));
		break;
#ifdef HAS_LCHMOD
	case ACTION_LCHMOD:
		rval = lchmod(STR(0), NUM(1));
		break;
#endif
	case ACTION_CHOWN:
		rval = chown(STR(0), NUM(1), NUM(2));
		break;
	case ACTION_LCHOWN:
		rval = lchown(STR(0), NUM(1), NUM(2));
		break;
#ifdef HAS_CHFLAGS
	case ACTION_CHFLAGS:
		rval = chflags(STR(0), str2flags(chflags_flags, STR(1)));
		break;
#endif
#ifdef HAS_LCHFLAGS
	case ACTION_LCHFLAGS:
		rval = lchflags(STR(0), str2flags(chflags_flags, STR(1)));
		break;
#endif
	case ACTION_TRUNCATE:
		rval = truncate64(STR(0), NUM(1));
		break;
	case ACTION_FTRUNCATE:
		rval = ftruncate64(NUM(0), NUM(1));
		break;
	case ACTION_STAT:
		rval = stat64(STR(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
	case ACTION_LSTAT:
		rval = lstat64(STR(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
	case ACTION_UTIME :
		switch (i) {
		case 1 :
			rval = utime(STR(0), (struct utimbuf*)NULL);
			break;
		case 3:
			ut.actime = NUM(1);
			ut.modtime = NUM(2);
			rval = utime(STR(0), &ut);
			break;
		default :
			fprintf(stderr,"utime() requires 1 or 3 arguments\n");
			exit(1);
		}
		break;
	case ACTION_BIND:
	    {
		struct sockaddr_un sunx;

		sunx.sun_family = AF_UNIX;
		strncpy(sunx.sun_path, STR(0), sizeof(sunx.sun_path) - 1);
		sunx.sun_path[sizeof(sunx.sun_path) - 1] = '\0';
		rval = socket(AF_UNIX, SOCK_STREAM, 0);
		if (rval < 0)
			break;
		rval = bind(rval, (struct sockaddr *)&sunx, sizeof(sunx));
		break;
	    }
	case ACTION_MKNOD:
	case ACTION_MKNODAT:
	    {
		mode_t ntype;
		dev_t dev;
		int fa;

		switch (scall->sd_action) {
		case ACTION_MKNOD:
			fa = 0;
			break;
		case ACTION_MKNODAT:
			fa = 1;
			break;
		default:
			abort();
		}

		dev = makedev(NUM(fa + 3), NUM(fa + 4));
		if (strcmp(STR(fa + 1), "c") == 0)	/* character device */
			ntype = S_IFCHR;
		else if (strcmp(STR(fa + 1), "b") == 0)	/* block device */
			ntype = S_IFBLK;
		else if (strcmp(STR(fa + 1), "f") == 0)	/* fifo special */
			ntype = S_IFIFO;
		else if (strcmp(STR(fa + 1), "d") == 0)	/* directory */
			ntype = S_IFDIR;
		else if (strcmp(STR(fa + 1), "o") == 0)	/* regular file */
			ntype = S_IFREG;
		else {
			fprintf(stderr, "wrong argument 1\n");
			exit(1);
		}
		switch (scall->sd_action) {
		case ACTION_MKNOD:
			rval = mknod(STR(0), ntype | NUM(2), dev);
			break;
		case ACTION_MKNODAT:
			rval = mknodat(NUM(0), STR(1), ntype | NUM(3), dev);
			break;
		default:
			abort();
		}
		break;
	    }
#ifdef HAS_ACL
	case ACTION_GETFACL :
		rval = do_getfacl(STR(0), STR(1));
		if (rval == 0)
			return (i);
		break;
	case ACTION_SETFACL :
		rval = do_setfacl(STR(0), STR(1), STR(2));
		break;
#endif
	default:
		fprintf(stderr, "unsupported syscall\n");
		exit(1);
	}
#undef STR
#undef NUM
	if (rval < 0) {
		const char *serrno;

		serrno = err2str(errno);
		fprintf(stderr, "%s returned %d\n", scall->sd_name, rval);
		printf("%s\n", serrno);
		exit(1);
	}
		/* Do not output a "0" when more syscalls to come */
	if (!more)
		printf("0\n");
	return (i);
}
Exemple #3
0
static unsigned int
call_syscall(struct syscall_desc *scall, char *argv[])
{
	struct stat64 sb;
	long long flags;
	unsigned int i;
	char *endp;
	int rval;
	union {
		char *str;
		long long num;
	} args[MAX_ARGS];

	/*
	 * Verify correctness of the arguments.
	 */
	for (i = 0; i < sizeof(args)/sizeof(args[0]); i++) {
		if (scall->sd_args[i] == TYPE_NONE) {
			if (argv[i] == NULL || strcmp(argv[i], ":") == 0)
				break;
			fprintf(stderr, "too many arguments [%s]\n", argv[i]);
			exit(1);
		} else {
			if (argv[i] == NULL || strcmp(argv[i], ":") == 0) {
				if (scall->sd_args[i] & TYPE_OPTIONAL)
					break;
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			if (scall->sd_args[i] & TYPE_STRING) {
				if (strcmp(argv[i], "NULL") == 0)
					args[i].str = NULL;
				else if (strcmp(argv[i], "DEADCODE") == 0)
					args[i].str = (void *)0xdeadc0de;
				else
					args[i].str = argv[i];
			} else if (scall->sd_args[i] & TYPE_NUMBER) {
				args[i].num = strtoll(argv[i], &endp, 0);
				if (*endp != '\0' && !isspace((unsigned char)*endp)) {
					fprintf(stderr, "invalid argument %u, number expected [%s]\n", i, endp);
					exit(1);
				}
			}
		}
	}
	/*
	 * Call the given syscall.
	 */
#define	NUM(n)	(args[(n)].num)
#define	STR(n)	(args[(n)].str)
	switch (scall->sd_action) {
	case ACTION_OPEN:
		flags = str2flags(open_flags, STR(1));
		if (flags & O_CREAT) {
			if (i == 2) {
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			rval = open(STR(0), flags, (mode_t)NUM(2));
		} else {
			if (i == 3) {
				fprintf(stderr, "too many arguments\n");
				exit(1);
			}
			rval = open(STR(0), flags);
		}
		break;
	case ACTION_CREATE:
		rval = open(STR(0), O_CREAT | O_EXCL, NUM(1));
		if (rval >= 0)
			close(rval);
		break;
	case ACTION_UNLINK:
		rval = unlink(STR(0));
		break;
	case ACTION_MKDIR:
		rval = mkdir(STR(0), NUM(1));
		break;
	case ACTION_RMDIR:
		rval = rmdir(STR(0));
		break;
	case ACTION_LINK:
		rval = link(STR(0), STR(1));
		break;
	case ACTION_SYMLINK:
		rval = symlink(STR(0), STR(1));
		break;
	case ACTION_RENAME:
		rval = rename(STR(0), STR(1));
		break;
	case ACTION_MKFIFO:
		rval = mkfifo(STR(0), NUM(1));
		break;
	case ACTION_CHMOD:
		rval = chmod(STR(0), NUM(1));
		break;
#ifdef HAS_LCHMOD
	case ACTION_LCHMOD:
		rval = lchmod(STR(0), NUM(1));
		break;
#endif
	case ACTION_CHOWN:
		rval = chown(STR(0), NUM(1), NUM(2));
		break;
	case ACTION_LCHOWN:
		rval = lchown(STR(0), NUM(1), NUM(2));
		break;
#ifdef HAS_CHFLAGS
	case ACTION_CHFLAGS:
		rval = chflags(STR(0), str2flags(chflags_flags, STR(1)));
		break;
#endif
#ifdef HAS_LCHFLAGS
	case ACTION_LCHFLAGS:
		rval = lchflags(STR(0), str2flags(chflags_flags, STR(1)));
		break;
#endif
	case ACTION_TRUNCATE:
		rval = truncate64(STR(0), NUM(1));
		break;
	case ACTION_STAT:
		rval = stat64(STR(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
	case ACTION_LSTAT:
		rval = lstat64(STR(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
    case ACTION_READDIR:
        rval = readdir_loop(STR(0));
        break;
	default:
		fprintf(stderr, "unsupported syscall\n");
		exit(1);
	}
#undef STR
#undef NUM
	if (rval < 0) {
		const char *serrno;

		serrno = err2str(errno);
		fprintf(stderr, "%s returned %d\n", scall->sd_name, rval);
		printf("%s\n", serrno);
		exit(1);
	}
	printf("0\n");
	return (i);
}
Exemple #4
0
static unsigned int
call_syscall(struct syscall_desc *scall, char *argv[])
{
	struct stat64 sb;
	long long flags;
	unsigned int i;
	char *endp;
	int name, rval;
	union {
		char *str;
		long long num;
	} args[MAX_ARGS];
#ifdef HAS_FREEBSD_ACL
	int entry_id = ACL_FIRST_ENTRY;
	acl_t acl, newacl;
	acl_entry_t entry, newentry;
#endif

	/*
	 * Verify correctness of the arguments.
	 */
	for (i = 0; i < sizeof(args)/sizeof(args[0]); i++) {
		if (scall->sd_args[i] == TYPE_NONE) {
			if (argv[i] == NULL || strcmp(argv[i], ":") == 0)
				break;
			fprintf(stderr, "too many arguments [%s]\n", argv[i]);
			exit(1);
		} else {
			if (argv[i] == NULL || strcmp(argv[i], ":") == 0) {
				if (scall->sd_args[i] & TYPE_OPTIONAL)
					break;
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			if ((scall->sd_args[i] & TYPE_MASK) == TYPE_STRING) {
				if (strcmp(argv[i], "NULL") == 0)
					args[i].str = NULL;
				else if (strcmp(argv[i], "DEADCODE") == 0)
					args[i].str = (void *)0xdeadc0de;
				else
					args[i].str = argv[i];
			} else if ((scall->sd_args[i] & TYPE_MASK) ==
			    TYPE_NUMBER) {
				args[i].num = strtoll(argv[i], &endp, 0);
				if (*endp != '\0' &&
				    !isspace((unsigned char)*endp)) {
					fprintf(stderr,
					    "invalid argument %u, number expected [%s]\n",
					    i, endp);
					exit(1);
				}
			} else if ((scall->sd_args[i] & TYPE_MASK) ==
			    TYPE_DESCRIPTOR) {
				if (strcmp(argv[i], "AT_FDCWD") == 0) {
					args[i].num = AT_FDCWD;
				} else if (strcmp(argv[i], "BADFD") == 0) {
					/* In case AT_FDCWD is -1 on some systems... */
					if (AT_FDCWD == -1)
						args[i].num = -2;
					else
						args[i].num = -1;
				} else {
					int pos;

					pos = strtoll(argv[i], &endp, 0);
					if (*endp != '\0' &&
					    !isspace((unsigned char)*endp)) {
						fprintf(stderr,
						    "invalid argument %u, number expected [%s]\n",
						    i, endp);
						exit(1);
					}
					args[i].num = descriptor_get(pos);
				}
			}
		}
	}
	/*
	 * Call the given syscall.
	 */
#define	NUM(n)	(args[(n)].num)
#define	STR(n)	(args[(n)].str)
	switch (scall->sd_action) {
	case ACTION_OPEN:
		flags = str2flags(open_flags, STR(1));
		if (flags & O_CREAT) {
			if (i == 2) {
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			rval = open(STR(0), (int)flags, (mode_t)NUM(2));
		} else {
			if (i == 3) {
				fprintf(stderr, "too many arguments\n");
				exit(1);
			}
			rval = open(STR(0), (int)flags);
		}
		if (rval >= 0)
			descriptor_add(rval);
		break;
	case ACTION_OPENAT:
		flags = str2flags(open_flags, STR(2));
		if (flags & O_CREAT) {
			if (i == 3) {
				fprintf(stderr, "too few arguments\n");
				exit(1);
			}
			rval = openat(NUM(0), STR(1), (int)flags,
			    (mode_t)NUM(3));
		} else {
			if (i == 4) {
				fprintf(stderr, "too many arguments\n");
				exit(1);
			}
			rval = openat(NUM(0), STR(1), (int)flags);
		}
		if (rval >= 0)
			descriptor_add(rval);
		break;
	case ACTION_CREATE:
		rval = open(STR(0), O_CREAT | O_EXCL, (mode_t)NUM(1));
		if (rval >= 0)
			close(rval);
		break;
	case ACTION_UNLINK:
		rval = unlink(STR(0));
		break;
	case ACTION_UNLINKAT:
		rval = unlinkat(NUM(0), STR(1),
		    (int)str2flags(unlinkat_flags, STR(2)));
		break;
	case ACTION_MKDIR:
		rval = mkdir(STR(0), (mode_t)NUM(1));
		break;
	case ACTION_MKDIRAT:
		rval = mkdirat(NUM(0), STR(1), (mode_t)NUM(2));
		break;
	case ACTION_RMDIR:
		rval = rmdir(STR(0));
		break;
	case ACTION_LINK:
		rval = link(STR(0), STR(1));
		break;
	case ACTION_LINKAT:
		rval = linkat(NUM(0), STR(1), NUM(2), STR(3),
		    (int)str2flags(linkat_flags, STR(4)));
		break;
	case ACTION_SYMLINK:
		rval = symlink(STR(0), STR(1));
		break;
	case ACTION_SYMLINKAT:
		rval = symlinkat(STR(0), NUM(1), STR(2));
		break;
	case ACTION_RENAME:
		rval = rename(STR(0), STR(1));
		break;
	case ACTION_RENAMEAT:
		rval = renameat(NUM(0), STR(1), NUM(2), STR(3));
		break;
	case ACTION_MKFIFO:
		rval = mkfifo(STR(0), (mode_t)NUM(1));
		break;
	case ACTION_MKFIFOAT:
		rval = mkfifoat(NUM(0), STR(1), (mode_t)NUM(2));
		break;
	case ACTION_MKNOD:
	case ACTION_MKNODAT:
	    {
		mode_t ntype;
		dev_t dev;
		int fa;

		switch (scall->sd_action) {
		case ACTION_MKNOD:
			fa = 0;
			break;
		case ACTION_MKNODAT:
			fa = 1;
			break;
		default:
			abort();
		}

		dev = makedev(NUM(fa + 3), NUM(fa + 4));
		if (strcmp(STR(fa + 1), "c") == 0)	/* character device */
			ntype = S_IFCHR;
		else if (strcmp(STR(fa + 1), "b") == 0)	/* block device */
			ntype = S_IFBLK;
		else if (strcmp(STR(fa + 1), "f") == 0)	/* fifo special */
			ntype = S_IFIFO;
		else if (strcmp(STR(fa + 1), "d") == 0)	/* directory */
			ntype = S_IFDIR;
		else if (strcmp(STR(fa + 1), "o") == 0)	/* regular file */
			ntype = S_IFREG;
		else {
			fprintf(stderr, "wrong argument 1\n");
			exit(1);
		}
		switch (scall->sd_action) {
		case ACTION_MKNOD:
			rval = mknod(STR(0), ntype | NUM(2), dev);
			break;
		case ACTION_MKNODAT:
			rval = mknodat(NUM(0), STR(1), ntype | NUM(3), dev);
			break;
		default:
			abort();
		}
		break;
	    }
	case ACTION_BIND:
	    {
		struct sockaddr_un sunx;

		sunx.sun_family = AF_UNIX;
		strncpy(sunx.sun_path, STR(0), sizeof(sunx.sun_path) - 1);
		sunx.sun_path[sizeof(sunx.sun_path) - 1] = '\0';
		rval = socket(AF_UNIX, SOCK_STREAM, 0);
		if (rval < 0)
			break;
		rval = bind(rval, (struct sockaddr *)&sunx, sizeof(sunx));
		break;
	    }
#ifdef HAS_BINDAT
	case ACTION_BINDAT:
	    {
		struct sockaddr_un sunx;

		sunx.sun_family = AF_UNIX;
		strncpy(sunx.sun_path, STR(1), sizeof(sunx.sun_path) - 1);
		sunx.sun_path[sizeof(sunx.sun_path) - 1] = '\0';
		rval = socket(AF_UNIX, SOCK_STREAM, 0);
		if (rval < 0)
			break;
		rval = bindat(NUM(0), rval, (struct sockaddr *)&sunx,
		    sizeof(sunx));
		break;
	    }
#endif
	case ACTION_CONNECT:
	    {
		struct sockaddr_un sunx;

		sunx.sun_family = AF_UNIX;
		strncpy(sunx.sun_path, STR(0), sizeof(sunx.sun_path) - 1);
		sunx.sun_path[sizeof(sunx.sun_path) - 1] = '\0';
		rval = socket(AF_UNIX, SOCK_STREAM, 0);
		if (rval < 0)
			break;
		rval = connect(rval, (struct sockaddr *)&sunx, sizeof(sunx));
		break;
	    }
#ifdef HAS_CONNECTAT
	case ACTION_CONNECTAT:
	    {
		struct sockaddr_un sunx;

		sunx.sun_family = AF_UNIX;
		strncpy(sunx.sun_path, STR(1), sizeof(sunx.sun_path) - 1);
		sunx.sun_path[sizeof(sunx.sun_path) - 1] = '\0';
		rval = socket(AF_UNIX, SOCK_STREAM, 0);
		if (rval < 0)
			break;
		rval = connectat(NUM(0), rval, (struct sockaddr *)&sunx,
		    sizeof(sunx));
		break;
	    }
#endif
	case ACTION_CHMOD:
		rval = chmod(STR(0), (mode_t)NUM(1));
		break;
	case ACTION_FCHMOD:
		rval = fchmod(NUM(0), (mode_t)NUM(1));
		break;
#ifdef HAS_LCHMOD
	case ACTION_LCHMOD:
		rval = lchmod(STR(0), (mode_t)NUM(1));
		break;
#endif
	case ACTION_FCHMODAT:
		rval = fchmodat(NUM(0), STR(1), (mode_t)NUM(2),
		    str2flags(fchmodat_flags, STR(3)));
		break;
	case ACTION_CHOWN:
		rval = chown(STR(0), (uid_t)NUM(1), (gid_t)NUM(2));
		break;
	case ACTION_FCHOWN:
		rval = fchown(NUM(0), (uid_t)NUM(1), (gid_t)NUM(2));
		break;
	case ACTION_LCHOWN:
		rval = lchown(STR(0), (uid_t)NUM(1), (gid_t)NUM(2));
		break;
	case ACTION_FCHOWNAT:
		rval = fchownat(NUM(0), STR(1), (uid_t)NUM(2), (gid_t)NUM(3),
		    (int)str2flags(fchownat_flags, STR(4)));
		break;
#ifdef HAS_CHFLAGS
	case ACTION_CHFLAGS:
		rval = chflags(STR(0),
		    (unsigned long)str2flags(chflags_flags, STR(1)));
		break;
#endif
#ifdef HAS_FCHFLAGS
	case ACTION_FCHFLAGS:
		rval = fchflags(NUM(0),
		    (unsigned long)str2flags(chflags_flags, STR(1)));
		break;
#endif
#ifdef HAS_CHFLAGSAT
	case ACTION_CHFLAGSAT:
		rval = chflagsat(NUM(0), STR(1),
		    (unsigned long)str2flags(chflags_flags, STR(2)),
		    (int)str2flags(chflagsat_flags, STR(3)));
		break;
#endif
#ifdef HAS_LCHFLAGS
	case ACTION_LCHFLAGS:
		rval = lchflags(STR(0),
		    (unsigned long)str2flags(chflags_flags, STR(1)));
		break;
#endif
	case ACTION_TRUNCATE:
		rval = truncate64(STR(0), NUM(1));
		break;
	case ACTION_FTRUNCATE:
		rval = ftruncate64(NUM(0), NUM(1));
		break;
	case ACTION_STAT:
		rval = stat64(STR(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
	case ACTION_FSTAT:
		rval = fstat64(NUM(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
	case ACTION_LSTAT:
		rval = lstat64(STR(0), &sb);
		if (rval == 0) {
			show_stats(&sb, STR(1));
			return (i);
		}
		break;
	case ACTION_FSTATAT:
		rval = fstatat(NUM(0), STR(1), &sb,
		    (int)str2flags(fstatat_flags, STR(2)));
		if (rval == 0) {
			show_stats(&sb, STR(3));
			return (i);
		}
		break;
	case ACTION_PATHCONF:
	case ACTION_FPATHCONF:
	case ACTION_LPATHCONF:
	    {
		long lrval;

		name = str2name(pathconf_names, STR(1));
		if (name == -1) {
			fprintf(stderr, "unknown name %s", STR(1));
			exit(1);
		}
		errno = 0;
		switch (scall->sd_action) {
		case ACTION_PATHCONF:
			lrval = pathconf(STR(0), name);
			break;
		case ACTION_FPATHCONF:
			lrval = fpathconf(NUM(0), name);
			break;
		case ACTION_LPATHCONF:
			lrval = lpathconf(STR(0), name);
			break;
		default:
			abort();
		}
		if (lrval == -1 && errno == 0) {
			printf("unlimited\n");
			return (i);
		} else if (lrval >= 0) {
			printf("%ld\n", lrval);
			return (i);
		}
		rval = -1;
		break;
	    }
#ifdef HAS_FREEBSD_ACL
	case ACTION_PREPENDACL:
		rval = -1;

		acl = acl_get_file(STR(0), ACL_TYPE_NFS4);
		if (acl == NULL)
			break;

		newacl = acl_from_text(STR(1));
		if (acl == NULL)
			break;

		while (acl_get_entry(newacl, entry_id, &newentry) == 1) {
			entry_id = ACL_NEXT_ENTRY;

			if (acl_create_entry_np(&acl, &entry, 0))
				break;

			if (acl_copy_entry(entry, newentry))
				break;
		}

		rval = acl_set_file(STR(0), ACL_TYPE_NFS4, acl);
		break;
	case ACTION_READACL:
		acl = acl_get_file(STR(0), ACL_TYPE_NFS4);
		if (acl == NULL)
			rval = -1;
		else
			rval = 0;
		break;
#endif
	case ACTION_WRITE:
		rval = write(NUM(0), STR(1), strlen(STR(1)));
		break;
	default:
		fprintf(stderr, "unsupported syscall\n");
		exit(1);
	}
#undef STR
#undef NUM
	if (rval < 0) {
		const char *serrno;

		serrno = err2str(errno);
		fprintf(stderr, "%s returned %d\n", scall->sd_name, rval);
		printf("%s\n", serrno);
		exit(1);
	}
	printf("0\n");
	return (i);
}