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[209.6.122.159]) by smtp.gmail.com with ESMTPSA id l34sm2437104qtd.71.2019.12.03.12.14.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Dec 2019 12:14:39 -0800 (PST) From: Masayoshi Mizuma To: Ard Biesheuvel , linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org Subject: [PATCH v2 1/2] efi: add /proc/efi directory Date: Tue, 3 Dec 2019 15:14:09 -0500 Message-Id: <20191203201410.28045-2-msys.mizuma@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191203201410.28045-1-msys.mizuma@gmail.com> References: <20191203201410.28045-1-msys.mizuma@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191203_121441_550865_1553BCB0 X-CRM114-Status: GOOD ( 11.74 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (msys.mizuma[at]gmail.com) 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Masayoshi Mizuma , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Eric Biederman , Matthias Brugger , Masayoshi Mizuma , d.hatayama@fujitsu.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Masayoshi Mizuma Add /proc/efi directory to show some efi internal information. Signed-off-by: Masayoshi Mizuma --- drivers/firmware/efi/efi.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c index d101f072c..d8157cb34 100644 --- a/drivers/firmware/efi/efi.c +++ b/drivers/firmware/efi/efi.c @@ -325,6 +325,22 @@ static __init int efivar_ssdt_load(void) static inline int efivar_ssdt_load(void) { return 0; } #endif +#ifdef CONFIG_PROC_FS +static struct proc_dir_entry *proc_efi; +static int __init efi_proc_init(void) +{ + proc_efi = proc_mkdir("efi", NULL); + if (!proc_efi) { + pr_err("/proc/efi: Cannot create /proc/efi directory.\n"); + return 1; + } + + return 0; +} +#else +static inline int efi_proc_init(void) { return 0; } +#endif /* CONFIG_PROC_FS */ + /* * We register the efi subsystem with the firmware subsystem and the * efivars subsystem with the efi subsystem, if the system was booted with @@ -381,6 +397,12 @@ static int __init efisubsys_init(void) goto err_remove_group; } + error = efi_proc_init(); + if (error) { + sysfs_remove_mount_point(efi_kobj, "efivars"); + goto err_remove_group; + } + return 0; err_remove_group: