From 188e3c5cd2b672620291e64a21f1598fe91e40b6 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Wed, 27 Apr 2016 11:56:04 +0200 Subject: [PATCH] tty: provide tty_name() even without CONFIG_TTY The audit subsystem just started printing the name of the tty, but that causes a build failure when CONFIG_TTY is disabled: kernel/built-in.o: In function `audit_log_task_info': memremap.c:(.text+0x5e34c): undefined reference to `tty_name' kernel/built-in.o: In function `audit_set_loginuid': memremap.c:(.text+0x63b34): undefined reference to `tty_name' This adds tty_name() to the list of functions that are provided as trivial stubs in that configuration. Signed-off-by: Arnd Bergmann Fixes: db0a6fb5d97a ("audit: add tty field to LOGIN event") Signed-off-by: Paul Moore --- include/linux/tty.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/include/linux/tty.h b/include/linux/tty.h index d9fb4b043f56..a93cce297832 100644 --- a/include/linux/tty.h +++ b/include/linux/tty.h @@ -371,6 +371,7 @@ extern void proc_clear_tty(struct task_struct *p); extern struct tty_struct *get_current_tty(void); /* tty_io.c */ extern int __init tty_init(void); +extern const char *tty_name(const struct tty_struct *tty); #else static inline void console_init(void) { } @@ -391,6 +392,8 @@ static inline struct tty_struct *get_current_tty(void) /* tty_io.c */ static inline int __init tty_init(void) { return 0; } +static inline const char *tty_name(const struct tty_struct *tty) +{ return "(none)"; } #endif extern struct ktermios tty_std_termios; @@ -415,7 +418,6 @@ static inline struct tty_struct *tty_kref_get(struct tty_struct *tty) return tty; } -extern const char *tty_name(const struct tty_struct *tty); extern const char *tty_driver_name(const struct tty_struct *tty); extern void tty_wait_until_sent(struct tty_struct *tty, long timeout); extern int __tty_check_change(struct tty_struct *tty, int sig); -- 2.20.1