lkml.org 
[lkml]   [2011]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 2/4] efivars: introduce utf16_strncmp
    Date
    Introduce utf16_strncmp which is used in the next patch.  Semantics
    should be the same as the strncmp C function.

    Signed-off-by: Mike Waychison <mikew@google.com>
    ---
    drivers/firmware/efivars.c | 18 ++++++++++++++++++
    1 files changed, 18 insertions(+), 0 deletions(-)

    diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
    index f10c760..fb1219a 100644
    --- a/drivers/firmware/efivars.c
    +++ b/drivers/firmware/efivars.c
    @@ -169,6 +169,24 @@ utf16_strsize(efi_char16_t *data, unsigned long maxlength)
    return utf16_strnlen(data, maxlength/sizeof(efi_char16_t)) * sizeof(efi_char16_t);
    }

    +static inline int
    +utf16_strncmp(const efi_char16_t *a, const efi_char16_t *b, size_t len)
    +{
    + while (1) {
    + if (len == 0)
    + return 0;
    + if (*a < *b)
    + return -1;
    + if (*a > *b)
    + return 1;
    + if (*a == 0) /* implies *b == 0 */
    + return 0;
    + a++;
    + b++;
    + len--;
    + }
    +}
    +
    static efi_status_t
    get_var_data_locked(struct efivars *efivars, struct efi_variable *var)
    {
    --
    1.7.3.1


    \
     
     \ /
      Last update: 2011-06-21 22:21    [W:0.023 / U:89.616 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site