From: Kees Cook <keescook@chromium.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kees Cook <keescook@chromium.org>,
Scott Branden <scott.branden@broadcom.com>,
Christoph Hellwig <hch@lst.de>, Mimi Zohar <zohar@linux.ibm.com>,
Luis Chamberlain <mcgrof@kernel.org>,
Jessica Yu <jeyu@kernel.org>, SeongJae Park <sjpark@amazon.de>,
KP Singh <kpsingh@chromium.org>,
linux-efi@vger.kernel.org, linux-security-module@vger.kernel.org,
linux-integrity@vger.kernel.org, selinux@vger.kernel.org,
linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 06/19] fs/kernel_read_file: Split into separate include file
Date: Fri, 24 Jul 2020 14:36:27 -0700 [thread overview]
Message-ID: <20200724213640.389191-7-keescook@chromium.org> (raw)
In-Reply-To: <20200724213640.389191-1-keescook@chromium.org>
From: Scott Branden <scott.branden@broadcom.com>
Move kernel_read_file* out of linux/fs.h to its own linux/kernel_read_file.h
include file. That header gets pulled in just about everywhere
and doesn't really need functions not related to the general fs interface.
Suggested-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20200706232309.12010-2-scott.branden@broadcom.com
Signed-off-by: Kees Cook <keescook@chromium.org>
---
drivers/base/firmware_loader/main.c | 1 +
fs/exec.c | 1 +
include/linux/fs.h | 38 ---------------------
include/linux/ima.h | 1 +
include/linux/kernel_read_file.h | 51 +++++++++++++++++++++++++++++
include/linux/security.h | 1 +
kernel/kexec_file.c | 1 +
kernel/module.c | 1 +
security/integrity/digsig.c | 1 +
security/integrity/ima/ima_fs.c | 1 +
security/integrity/ima/ima_main.c | 1 +
security/integrity/ima/ima_policy.c | 1 +
security/loadpin/loadpin.c | 1 +
security/security.c | 1 +
security/selinux/hooks.c | 1 +
15 files changed, 64 insertions(+), 38 deletions(-)
create mode 100644 include/linux/kernel_read_file.h
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index c2f57cedcd6f..d4a413ea48ce 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -12,6 +12,7 @@
#include <linux/capability.h>
#include <linux/device.h>
+#include <linux/kernel_read_file.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/timer.h>
diff --git a/fs/exec.c b/fs/exec.c
index 2bf549757ce7..07a7fe9ac5be 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -23,6 +23,7 @@
* formats.
*/
+#include <linux/kernel_read_file.h>
#include <linux/slab.h>
#include <linux/file.h>
#include <linux/fdtable.h>
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f50a35d54a61..11dd6cc7de58 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2993,44 +2993,6 @@ static inline void i_readcount_inc(struct inode *inode)
#endif
extern int do_pipe_flags(int *, int);
-/* This is a list of *what* is being read, not *how* nor *where*. */
-#define __kernel_read_file_id(id) \
- id(UNKNOWN, unknown) \
- id(FIRMWARE, firmware) \
- id(MODULE, kernel-module) \
- id(KEXEC_IMAGE, kexec-image) \
- id(KEXEC_INITRAMFS, kexec-initramfs) \
- id(POLICY, security-policy) \
- id(X509_CERTIFICATE, x509-certificate) \
- id(MAX_ID, )
-
-#define __fid_enumify(ENUM, dummy) READING_ ## ENUM,
-#define __fid_stringify(dummy, str) #str,
-
-enum kernel_read_file_id {
- __kernel_read_file_id(__fid_enumify)
-};
-
-static const char * const kernel_read_file_str[] = {
- __kernel_read_file_id(__fid_stringify)
-};
-
-static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id)
-{
- if ((unsigned)id >= READING_MAX_ID)
- return kernel_read_file_str[READING_UNKNOWN];
-
- return kernel_read_file_str[id];
-}
-
-extern int kernel_read_file(struct file *, void **, loff_t *, loff_t,
- enum kernel_read_file_id);
-extern int kernel_read_file_from_path(const char *, void **, loff_t *, loff_t,
- enum kernel_read_file_id);
-extern int kernel_read_file_from_path_initns(const char *, void **, loff_t *, loff_t,
- enum kernel_read_file_id);
-extern int kernel_read_file_from_fd(int, void **, loff_t *, loff_t,
- enum kernel_read_file_id);
extern ssize_t kernel_read(struct file *, void *, size_t, loff_t *);
extern ssize_t kernel_write(struct file *, const void *, size_t, loff_t *);
extern ssize_t __kernel_write(struct file *, const void *, size_t, loff_t *);
diff --git a/include/linux/ima.h b/include/linux/ima.h
index 9164e1534ec9..148636bfcc8f 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -7,6 +7,7 @@
#ifndef _LINUX_IMA_H
#define _LINUX_IMA_H
+#include <linux/kernel_read_file.h>
#include <linux/fs.h>
#include <linux/security.h>
#include <linux/kexec.h>
diff --git a/include/linux/kernel_read_file.h b/include/linux/kernel_read_file.h
new file mode 100644
index 000000000000..78cf3d7dc835
--- /dev/null
+++ b/include/linux/kernel_read_file.h
@@ -0,0 +1,51 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_KERNEL_READ_FILE_H
+#define _LINUX_KERNEL_READ_FILE_H
+
+#include <linux/file.h>
+#include <linux/types.h>
+
+/* This is a list of *what* is being read, not *how* nor *where*. */
+#define __kernel_read_file_id(id) \
+ id(UNKNOWN, unknown) \
+ id(FIRMWARE, firmware) \
+ id(MODULE, kernel-module) \
+ id(KEXEC_IMAGE, kexec-image) \
+ id(KEXEC_INITRAMFS, kexec-initramfs) \
+ id(POLICY, security-policy) \
+ id(X509_CERTIFICATE, x509-certificate) \
+ id(MAX_ID, )
+
+#define __fid_enumify(ENUM, dummy) READING_ ## ENUM,
+#define __fid_stringify(dummy, str) #str,
+
+enum kernel_read_file_id {
+ __kernel_read_file_id(__fid_enumify)
+};
+
+static const char * const kernel_read_file_str[] = {
+ __kernel_read_file_id(__fid_stringify)
+};
+
+static inline const char *kernel_read_file_id_str(enum kernel_read_file_id id)
+{
+ if ((unsigned int)id >= READING_MAX_ID)
+ return kernel_read_file_str[READING_UNKNOWN];
+
+ return kernel_read_file_str[id];
+}
+
+int kernel_read_file(struct file *file,
+ void **buf, loff_t *size, loff_t max_size,
+ enum kernel_read_file_id id);
+int kernel_read_file_from_path(const char *path,
+ void **buf, loff_t *size, loff_t max_size,
+ enum kernel_read_file_id id);
+int kernel_read_file_from_path_initns(const char *path,
+ void **buf, loff_t *size, loff_t max_size,
+ enum kernel_read_file_id id);
+int kernel_read_file_from_fd(int fd,
+ void **buf, loff_t *size, loff_t max_size,
+ enum kernel_read_file_id id);
+
+#endif /* _LINUX_KERNEL_READ_FILE_H */
diff --git a/include/linux/security.h b/include/linux/security.h
index 0a0a03b36a3b..42df0d9b4c37 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -23,6 +23,7 @@
#ifndef __LINUX_SECURITY_H
#define __LINUX_SECURITY_H
+#include <linux/kernel_read_file.h>
#include <linux/key.h>
#include <linux/capability.h>
#include <linux/fs.h>
diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c
index 09cc78df53c6..1358069ce9e9 100644
--- a/kernel/kexec_file.c
+++ b/kernel/kexec_file.c
@@ -24,6 +24,7 @@
#include <linux/elf.h>
#include <linux/elfcore.h>
#include <linux/kernel.h>
+#include <linux/kernel_read_file.h>
#include <linux/syscalls.h>
#include <linux/vmalloc.h>
#include "kexec_internal.h"
diff --git a/kernel/module.c b/kernel/module.c
index 26105148f4d2..e9765803601b 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -18,6 +18,7 @@
#include <linux/fs.h>
#include <linux/sysfs.h>
#include <linux/kernel.h>
+#include <linux/kernel_read_file.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/elf.h>
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index ac02b7632353..f8869be45d8f 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -10,6 +10,7 @@
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/cred.h>
+#include <linux/kernel_read_file.h>
#include <linux/key-type.h>
#include <linux/digsig.h>
#include <linux/vmalloc.h>
diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c
index 15a44c5022f7..e13ffece3726 100644
--- a/security/integrity/ima/ima_fs.c
+++ b/security/integrity/ima/ima_fs.c
@@ -13,6 +13,7 @@
*/
#include <linux/fcntl.h>
+#include <linux/kernel_read_file.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/seq_file.h>
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index f80ee4ce4669..dab4a13221cf 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -18,6 +18,7 @@
#include <linux/module.h>
#include <linux/file.h>
#include <linux/binfmts.h>
+#include <linux/kernel_read_file.h>
#include <linux/mount.h>
#include <linux/mman.h>
#include <linux/slab.h>
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index e493063a3c34..f8390f6081f0 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -9,6 +9,7 @@
#include <linux/init.h>
#include <linux/list.h>
+#include <linux/kernel_read_file.h>
#include <linux/fs.h>
#include <linux/security.h>
#include <linux/magic.h>
diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c
index ee5cb944f4ad..81bc95127f92 100644
--- a/security/loadpin/loadpin.c
+++ b/security/loadpin/loadpin.c
@@ -11,6 +11,7 @@
#include <linux/module.h>
#include <linux/fs.h>
+#include <linux/kernel_read_file.h>
#include <linux/lsm_hooks.h>
#include <linux/mount.h>
#include <linux/path.h>
diff --git a/security/security.c b/security/security.c
index 0ce3e73edd42..f5920115a325 100644
--- a/security/security.c
+++ b/security/security.c
@@ -16,6 +16,7 @@
#include <linux/export.h>
#include <linux/init.h>
#include <linux/kernel.h>
+#include <linux/kernel_read_file.h>
#include <linux/lsm_hooks.h>
#include <linux/integrity.h>
#include <linux/ima.h>
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index efa6108b1ce9..5de45010fb1a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -24,6 +24,7 @@
#include <linux/init.h>
#include <linux/kd.h>
#include <linux/kernel.h>
+#include <linux/kernel_read_file.h>
#include <linux/tracehook.h>
#include <linux/errno.h>
#include <linux/sched/signal.h>
--
2.25.1
next prev parent reply other threads:[~2020-07-24 21:38 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-24 21:36 [PATCH v3 00/19] Introduce partial kernel_read_file() support Kees Cook
2020-07-24 21:36 ` [PATCH v3 01/19] test_firmware: Test platform fw loading on non-EFI systems Kees Cook
2020-07-24 21:36 ` [PATCH v3 02/19] selftest/firmware: Add selftest timeout in settings Kees Cook
2020-07-24 21:36 ` [PATCH v3 03/19] firmware_loader: EFI firmware loader must handle pre-allocated buffer Kees Cook
2020-07-25 10:07 ` Greg Kroah-Hartman
2020-07-25 15:50 ` Kees Cook
2020-07-25 17:20 ` Greg Kroah-Hartman
2020-07-24 21:36 ` [PATCH v3 04/19] fs/kernel_read_file: Remove FIRMWARE_PREALLOC_BUFFER enum Kees Cook
2020-07-27 13:35 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 05/19] fs/kernel_read_file: Remove FIRMWARE_EFI_EMBEDDED enum Kees Cook
2020-07-24 21:36 ` Kees Cook [this message]
2020-07-27 14:41 ` [PATCH v3 06/19] fs/kernel_read_file: Split into separate include file Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 07/19] fs/kernel_read_file: Split into separate source file Kees Cook
2020-07-27 14:53 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 08/19] fs/kernel_read_file: Remove redundant size argument Kees Cook
2020-07-27 16:29 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 09/19] fs/kernel_read_file: Switch buffer size arg to size_t Kees Cook
2020-07-27 16:29 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 10/19] fs/kernel_read_file: Add file_size output argument Kees Cook
2020-07-27 16:29 ` Mimi Zohar
2020-07-24 21:36 ` [PATCH v3 11/19] LSM: Introduce kernel_post_load_data() hook Kees Cook
2020-07-27 10:49 ` Mimi Zohar
2020-07-28 19:41 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 12/19] firmware_loader: Use security_post_load_data() Kees Cook
2020-07-27 10:57 ` Mimi Zohar
2020-07-28 19:43 ` Kees Cook
2020-07-29 16:29 ` Mimi Zohar
2020-07-29 18:10 ` Mimi Zohar
2020-07-29 19:13 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 13/19] module: Call security_kernel_post_load_data() Kees Cook
2020-07-24 21:36 ` [PATCH v3 14/19] LSM: Add "contents" flag to kernel_read_file hook Kees Cook
2020-07-24 21:36 ` [PATCH v3 15/19] IMA: Add support for file reads without contents Kees Cook
2020-07-27 13:23 ` Mimi Zohar
2020-07-28 19:44 ` Kees Cook
2020-07-28 19:56 ` Greg Kroah-Hartman
2020-07-28 20:12 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 16/19] fs/kernel_file_read: Add "offset" arg for partial reads Kees Cook
2020-07-24 21:36 ` [PATCH v3 17/19] firmware: Store opt_flags in fw_priv Kees Cook
2020-07-24 21:36 ` [PATCH v3 18/19] firmware: Add request_partial_firmware_into_buf() Kees Cook
2020-07-29 1:17 ` Luis Chamberlain
2020-07-29 6:22 ` Takashi Iwai
2020-07-29 17:43 ` Kees Cook
2020-07-24 21:36 ` [PATCH v3 19/19] test_firmware: Test partial read support Kees Cook
2020-07-25 5:14 ` [PATCH v3 00/19] Introduce partial kernel_read_file() support Scott Branden
2020-07-25 10:05 ` Greg Kroah-Hartman
2020-07-25 15:48 ` Kees Cook
2020-07-27 11:16 ` Mimi Zohar
2020-07-27 19:18 ` Scott Branden
2020-07-28 18:48 ` Mimi Zohar
2020-07-28 19:56 ` Scott Branden
2020-07-29 1:19 ` Luis Chamberlain
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