On Mon, May 14, 2018 at 12:43:20PM -0500, Eric Sandeen wrote:
> This adds a get/set label command to xfs_io.
....
> +static int
> +label_f(
> + int argc,
> + char **argv)
> +{
> + int error;
> + char label[FSLABEL_MAX];
> +
> + if (argc == 1) {
> + memset(&label, 0, sizeof(label));
> + error = ioctl(file->fd, FS_IOC_GET_FSLABEL, &label);
> + } else {
> + strncpy(label, argv[1], sizeof(label));
> + error = ioctl(file->fd, FS_IOC_SET_FSLABEL, &label);
> + }
> +
> + if (error)
> + perror("label");
Need to set exitcode = 1 here so that xfs_io fails with a non-zero
exit status....
> + else
> + printf("label = \"%s\"\n", label);
> +
> + return error;
Because this isn't the exit status - this is the "continue
processing the next command" return value. i.e. return 0 if we want
to continue, non-zero if we want to abort further CLI processing....
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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