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| author | Joshua Clayton <stillcompiling@gmail.com> | 2015-11-18 14:30:41 -0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-11-23 14:54:01 +0000 |
| commit | a20874f78be633b9e3a505d5f191735188b110a5 (patch) | |
| tree | fd20e39027a9f7526e23f2d767ecdeab8e6eeb87 /tools/spi | |
| parent | 983b27886a3c7f6eff4e987ddba932da74703f4e (diff) | |
| download | lwn-a20874f78be633b9e3a505d5f191735188b110a5.tar.gz lwn-a20874f78be633b9e3a505d5f191735188b110a5.zip | |
spi: spidev_test: check error
Check the result of sscanf to verify a result was found.
report and error and abort if pattern was not found.
Signed-off-by: Joshua Clayton <stillcompiling@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'tools/spi')
| -rw-r--r-- | tools/spi/spidev_test.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/spi/spidev_test.c b/tools/spi/spidev_test.c index 02fc3a44901b..322370dbc770 100644 --- a/tools/spi/spidev_test.c +++ b/tools/spi/spidev_test.c @@ -86,13 +86,17 @@ static void hex_dump(const void *src, size_t length, size_t line_size, char *pre static int unescape(char *_dst, char *_src, size_t len) { int ret = 0; + int match; char *src = _src; char *dst = _dst; unsigned int ch; while (*src) { if (*src == '\\' && *(src+1) == 'x') { - sscanf(src + 2, "%2x", &ch); + match = sscanf(src + 2, "%2x", &ch); + if (!match) + pabort("malformed input string"); + src += 4; *dst++ = (unsigned char)ch; } else { |