From b89999d004931ab2e5123611ace7dab77328f8d6 Mon Sep 17 00:00:00 2001 From: Scott Branden Date: Fri, 2 Oct 2020 10:38:15 -0700 Subject: [PATCH] fs/kernel_read_file: Split into separate include file 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 Signed-off-by: Scott Branden Signed-off-by: Kees Cook Reviewed-by: Christoph Hellwig Reviewed-by: Mimi Zohar Reviewed-by: Luis Chamberlain Acked-by: Greg Kroah-Hartman Acked-by: James Morris Link: https://lore.kernel.org/r/20200706232309.12010-2-scott.branden@broadcom.com Link: https://lore.kernel.org/r/20201002173828.2099543-4-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman --- 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 b0ec2721f55d..8c6ea389afcf 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -12,6 +12,7 @@ #include #include +#include #include #include #include diff --git a/fs/exec.c b/fs/exec.c index 9233cd50dc4c..c454af329413 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -23,6 +23,7 @@ * formats. */ +#include #include #include #include diff --git a/include/linux/fs.h b/include/linux/fs.h index 3fb7af12d033..0885d53afb11 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2858,44 +2858,6 @@ 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 *); ssize_t __kernel_read(struct file *file, void *buf, size_t count, loff_t *pos); 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 d15100de6cdd..64804f78408b 100644 --- a/include/linux/ima.h +++ b/include/linux/ima.h @@ -7,6 +7,7 @@ #ifndef _LINUX_IMA_H #define _LINUX_IMA_H +#include #include #include #include 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 +#include + +/* 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 #include #include #include diff --git a/kernel/kexec_file.c b/kernel/kexec_file.c index ca40bef75a61..1cc82557f4c1 100644 --- a/kernel/kexec_file.c +++ b/kernel/kexec_file.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include "kexec_internal.h" diff --git a/kernel/module.c b/kernel/module.c index b2808acac46b..4218abd272ee 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include 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 #include #include +#include #include #include #include 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 +#include #include #include #include diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index 2f187784c5bc..5f89970c5ab7 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index b4de33074b37..3b0b43e18ecf 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -9,6 +9,7 @@ #include #include +#include #include #include #include diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c index 670a1aebb8a1..163c48216d13 100644 --- a/security/loadpin/loadpin.c +++ b/security/loadpin/loadpin.c @@ -11,6 +11,7 @@ #include #include +#include #include #include #include diff --git a/security/security.c b/security/security.c index 70a7ad357bc6..19d3150f68f4 100644 --- a/security/security.c +++ b/security/security.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c index a340986aa92e..96f5f8b3b9f0 100644 --- a/security/selinux/hooks.c +++ b/security/selinux/hooks.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include