[PATCH 1/1] DEVFS mknod stored path pointer, now path is copied instead

Chris Johns chrisj at rtems.org
Wed Sep 18 18:52:48 UTC 2013


Daniel Hellstrom wrote:
> ---
>   For RTEMS 4.10 branch.
>
>   cpukit/libfs/src/devfs/devfs_mknod.c |    9 +++++++--
>   1 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/cpukit/libfs/src/devfs/devfs_mknod.c b/cpukit/libfs/src/devfs/devfs_mknod.c
> index d8e5a30..6df84a4 100644
> --- a/cpukit/libfs/src/devfs/devfs_mknod.c
> +++ b/cpukit/libfs/src/devfs/devfs_mknod.c
> @@ -29,6 +29,7 @@ int devFS_mknod(
>   {
>     int                       i;
>     int                       slot;
> +  int                       len;
>     rtems_device_name_t      *device_name_table;
>     rtems_device_major_number major;
>     rtems_device_minor_number minor;
> @@ -69,8 +70,12 @@ int devFS_mknod(
>         rtems_set_errno_and_return_minus_one( ENOMEM );
>
>     _ISR_Disable(level);
> -  device_name_table[slot].device_name  = (char *)path;
> -  device_name_table[slot].device_name_length = strlen(path);
> +  len = strlen(path);
> +  device_name_table[slot].device_name  = (char *)malloc(len);

Is there a free if the node is deleted ?

> +  if (!device_name_table[slot].device_name)
> +      rtems_set_errno_and_return_minus_one(ENOMEM);
> +  strcpy(device_name_table[slot].device_name, (char *)path);
> +  device_name_table[slot].device_name_length = len;
>     device_name_table[slot].major = major;
>     device_name_table[slot].minor = minor;
>     device_name_table[slot].mode  = mode;



More information about the devel mailing list