linux-stable.git/tools/testing/selftests/ir, branch linux-5.0.y

selftests: ir: fix warning: "%s" directive output may be truncated ’ directive output may be truncated

2019-04-05T20:34:38+00:00

[ Upstream commit ed675ed9da6d951322efd72d739d6b5ce1c18f02 ]

Fix the following warning by sizing the buffer to max. of sysfs
path max. size + d_name max. size.

gcc -Wall -O2 -I../../../include/uapi ir_loopback.c  -o ../tools/testing/selftests/ir/ir_loopback
ir_loopback.c: In function ‘lirc_open’:
ir_loopback.c:71:37: warning: ‘%s’ directive output may be truncated writing up to 255 bytes into a region of size 95 [-Wformat-truncation=]
    snprintf(buf, sizeof(buf), "/dev/%s", dent->d_name);
                                     ^~
In file included from /usr/include/stdio.h:862:0,
                 from ir_loopback.c:14:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10: note: ‘__builtin___snprintf_chk’ output between 6 and 261 bytes into a destination of size 100
   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
        __bos (__s), __fmt, __va_arg_pack ());
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Shuah Khan 
Acked-by: Sean Young 
Signed-off-by: Shuah Khan 
Signed-off-by: Sasha Levin

selftests: Use lirc.h from kernel tree, not from system

2019-01-25T21:58:46+00:00

When the system lirc.h is older than v4.16, you will get errors like:

ir_loopback.c:32:16: error: field ‘proto’ has incomplete type
  enum rc_proto proto;

Cc: Shuah Khan 
Signed-off-by: Sean Young 
Signed-off-by: Shuah Khan

media: rc: self test for IR encoders and decoders

2018-11-06T16:27:17+00:00

ir-loopback can transmit IR on one rc device and check the correct
scancode and protocol is decoded on a different rc device. This can be
used to check IR transmission between two rc devices. Using rc-loopback,
we use it to check the IR encoders and decoders themselves.

No hardware is required for this test.

Signed-off-by: Sean Young 
Cc: Shuah Khan 
Signed-off-by: Shuah Khan