Providing human-readable (and audit-parsable) strings for the READING_*
enums is needed by some LSMs.
Signed-off-by: Kees Cook <keesc...@chromium.org>
---
fs/exec.c | 19 +++++++++++++++++++
include/linux/fs.h | 1 +
2 files changed, 20 insertions(+)
diff --git a/fs/exec.c b/fs/exec.c
index c4010b8207a1..05e71b6c0ef0 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -819,6 +819,25 @@ struct file *open_exec(const char *name)
}
EXPORT_SYMBOL(open_exec);
+const char *kernel_read_file_id_str(enum kernel_read_file_id id)
+{
+ switch (id) {
+ case READING_FIRMWARE:
+ return "firmware";
+ case READING_MODULE:
+ return "kernel-module";
+ case READING_KEXEC_IMAGE:
+ return "kexec-image";
+ case READING_KEXEC_INITRAMFS:
+ return "kexec-initramfs";
+ case READING_POLICY:
+ return "security-policy";
+ default:
+ return "unknown";
+ }
+}
+EXPORT_SYMBOL(kernel_read_file_id_str);
+
int kernel_read(struct file *file, loff_t offset,
char *addr, unsigned long count)
{
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 304991a80e23..596b403d5a28 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2589,6 +2589,7 @@ enum kernel_read_file_id {
READING_MAX_ID
};
+extern const char *kernel_read_file_id_str(enum kernel_read_file_id id);
extern int kernel_read(struct file *, loff_t, char *, unsigned long);
extern int kernel_read_file(struct file *, void **, loff_t *, loff_t,
enum kernel_read_file_id);
--
2.6.3
--
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