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Thu, 22 May 2025 15:19:23 -0700 (PDT) Received: from [192.168.1.14] ([38.175.170.29]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4fbcc38a460sm3349280173.26.2025.05.22.15.19.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 22 May 2025 15:19:23 -0700 (PDT) Message-ID: <73a4b1c9-44b4-4f06-a766-ea7ed391c578@linuxfoundation.org> Date: Thu, 22 May 2025 16:19:22 -0600 Precedence: bulk X-Mailing-List: linux-kernel-mentees@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] selftests: firmware: Add details in error logging To: Harshal , shuah@kernel.org Cc: linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linux.dev, Shuah Khan References: <20250516153955.111815-1-embedkari167@gmail.com> Content-Language: en-US From: Shuah Khan In-Reply-To: <20250516153955.111815-1-embedkari167@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 5/16/25 09:39, Harshal wrote: > Specify details in logs of failed cases > > Use die() instead of exit() when write to > sys_path fails Please explain why this change is needed? > > Signed-off-by: Harshal > --- > tools/testing/selftests/firmware/fw_namespace.c | 17 +++++++++-------- > 1 file changed, 9 insertions(+), 8 deletions(-) > > diff --git a/tools/testing/selftests/firmware/fw_namespace.c b/tools/testing/selftests/firmware/fw_namespace.c > index 04757dc7e546..deff7f57b694 100644 > --- a/tools/testing/selftests/firmware/fw_namespace.c > +++ b/tools/testing/selftests/firmware/fw_namespace.c > @@ -38,10 +38,11 @@ static void trigger_fw(const char *fw_name, const char *sys_path) > > fd = open(sys_path, O_WRONLY); > if (fd < 0) > - die("open failed: %s\n", > + die("open of sys_path failed: %s\n", > strerror(errno)); > if (write(fd, fw_name, strlen(fw_name)) != strlen(fw_name)) > - exit(EXIT_FAILURE); > + die("write to sys_path failed: %s\n", > + strerror(errno)); Hmm. Wrapper scripts key off of the EXIT_FAILURE - how does the output change with this change? > close(fd); > } > > @@ -52,10 +53,10 @@ static void setup_fw(const char *fw_path) > > fd = open(fw_path, O_WRONLY | O_CREAT, 0600); > if (fd < 0) > - die("open failed: %s\n", > + die("open of firmware file failed: %s\n", > strerror(errno)); > if (write(fd, fw, sizeof(fw) -1) != sizeof(fw) -1) > - die("write failed: %s\n", > + die("write to firmware file failed: %s\n", > strerror(errno)); > close(fd); > } > @@ -66,7 +67,7 @@ static bool test_fw_in_ns(const char *fw_name, const char *sys_path, bool block_ > > if (block_fw_in_parent_ns) > if (mount("test", "/lib/firmware", "tmpfs", MS_RDONLY, NULL) == -1) > - die("blocking firmware in parent ns failed\n"); > + die("blocking firmware in parent namespace failed\n"); > > child = fork(); > if (child == -1) { > @@ -99,11 +100,11 @@ static bool test_fw_in_ns(const char *fw_name, const char *sys_path, bool block_ > strerror(errno)); > } > if (mount(NULL, "/", NULL, MS_SLAVE|MS_REC, NULL) == -1) > - die("remount root in child ns failed\n"); > + die("remount root in child namespace failed\n"); > > if (!block_fw_in_parent_ns) { > if (mount("test", "/lib/firmware", "tmpfs", MS_RDONLY, NULL) == -1) > - die("blocking firmware in child ns failed\n"); > + die("blocking firmware in child namespace failed\n"); > } else > umount("/lib/firmware"); > > @@ -129,8 +130,8 @@ int main(int argc, char **argv) > die("error: failed to build full fw_path\n"); > > setup_fw(fw_path); > - > setvbuf(stdout, NULL, _IONBF, 0); > + > /* Positive case: firmware in PID1 mount namespace */ > printf("Testing with firmware in parent namespace (assumed to be same file system as PID1)\n"); > if (!test_fw_in_ns(fw_name, sys_path, false)) The rest look fine. thanks, -- Shuah