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Audit: standardize string audit interfaces

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This patch standardized the string auditing interfaces.  No userspace
changes will be visible and this is all just cleanup and consistancy
work.  We have the following string audit interfaces to use:

void audit_log_n_hex(struct audit_buffer *ab, const unsigned char *buf, size_t len);

void audit_log_n_string(struct audit_buffer *ab, const char *buf, size_t n);
void audit_log_string(struct audit_buffer *ab, const char *buf);

void audit_log_n_untrustedstring(struct audit_buffer *ab, const char *string, size_t n);
void audit_log_untrustedstring(struct audit_buffer *ab, const char *string);

This may be the first step to possibly fixing some of the issues that
people have with the string output from the kernel audit system.  But we
still don't have an agreed upon solution to that problem.

Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Eric Paris 2008-04-18 10:12:59 -04:00 • committed by Al Viro
parent f09ac9db2a
commit b556f8ad58
5 changed files with 29 additions and 24 deletions
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22
include/linux/audit.h
View file

@ -549,16 +549,20 @@ extern void audit_log_format(struct audit_buffer *ab,
const char *fmt, ...)
__attribute__((format(printf,2,3)));
extern void audit_log_end(struct audit_buffer *ab);
extern void audit_log_hex(struct audit_buffer *ab,
const unsigned char *buf,
size_t len);
extern int audit_string_contains_control(const char *string,
size_t len);
extern void audit_log_n_hex(struct audit_buffer *ab,
const unsigned char *buf,
size_t len);
extern void audit_log_n_string(struct audit_buffer *ab,
const char *buf,
size_t n);
#define audit_log_string(a,b) audit_log_n_string(a, b, strlen(b));
extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
const char *string,
size_t n);
extern void audit_log_untrustedstring(struct audit_buffer *ab,
const char *string);
extern void audit_log_n_untrustedstring(struct audit_buffer *ab,
size_t n,
const char *string);
extern void audit_log_d_path(struct audit_buffer *ab,
const char *prefix,
struct path *path);
@ -578,9 +582,11 @@ extern int audit_enabled;
#define audit_log_vformat(b,f,a) do { ; } while (0)
#define audit_log_format(b,f,...) do { ; } while (0)
#define audit_log_end(b) do { ; } while (0)
#define audit_log_hex(a,b,l) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_n_hex(a,b,l) do { ; } while (0)
#define audit_log_n_string(a,c,l) do { ; } while (0)
#define audit_log_string(a,c) do { ; } while (0)
#define audit_log_n_untrustedstring(a,n,s) do { ; } while (0)
#define audit_log_untrustedstring(a,s) do { ; } while (0)
#define audit_log_d_path(b, p, d) do { ; } while (0)
#define audit_enabled 0
#endif