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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 <arnd@arndb.de>
Fixes: db0a6fb5d9 ("audit: add tty field to LOGIN event")
Signed-off-by: Paul Moore <paul@paul-moore.com>
This commit is contained in:
Arnd Bergmann 2016-04-27 11:56:04 +02:00 committed by Paul Moore
parent db0a6fb5d9
commit 188e3c5cd2
1 changed files with 3 additions and 1 deletions
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4
include/linux/tty.h
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@ -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);