1 /* SPDX-License-Identifier: LGPL-2.1+ */
11 #include "time-util.h"
14 #define ANSI_RED "\x1B[0;31m"
15 #define ANSI_GREEN "\x1B[0;32m"
16 #define ANSI_YELLOW "\x1B[0;33m"
17 #define ANSI_BLUE "\x1B[0;34m"
18 #define ANSI_MAGENTA "\x1B[0;35m"
19 #define ANSI_GREY "\x1B[0;38;5;245m"
21 /* Bold/highlighted */
22 #define ANSI_HIGHLIGHT_RED "\x1B[0;1;31m"
23 #define ANSI_HIGHLIGHT_GREEN "\x1B[0;1;32m"
24 #define ANSI_HIGHLIGHT_YELLOW "\x1B[0;1;38;5;185m"
25 #define ANSI_HIGHLIGHT_BLUE "\x1B[0;1;34m"
26 #define ANSI_HIGHLIGHT_MAGENTA "\x1B[0;1;35m"
27 #define ANSI_HIGHLIGHT_GREY "\x1B[0;1;38;5;245m"
28 #define ANSI_HIGHLIGHT_YELLOW4 "\x1B[0;1;38;5;100m"
31 #define ANSI_HIGHLIGHT_RED_UNDERLINE "\x1B[0;1;4;31m"
32 #define ANSI_HIGHLIGHT_GREEN_UNDERLINE "\x1B[0;1;4;32m"
33 #define ANSI_HIGHLIGHT_YELLOW_UNDERLINE "\x1B[0;1;4;33m"
34 #define ANSI_HIGHLIGHT_BLUE_UNDERLINE "\x1B[0;1;4;34m"
35 #define ANSI_HIGHLIGHT_MAGENTA_UNDERLINE "\x1B[0;1;4;35m"
36 #define ANSI_HIGHLIGHT_GREY_UNDERLINE "\x1B[0;1;4;38;5;245m"
38 /* Other ANSI codes */
39 #define ANSI_UNDERLINE "\x1B[0;4m"
40 #define ANSI_HIGHLIGHT "\x1B[0;1;39m"
41 #define ANSI_HIGHLIGHT_UNDERLINE "\x1B[0;1;4m"
43 /* Reset/clear ANSI styles */
44 #define ANSI_NORMAL "\x1B[0m"
46 /* Erase characters until the end of the line */
47 #define ANSI_ERASE_TO_END_OF_LINE "\x1B[K"
49 /* Move cursor up one line */
50 #define ANSI_REVERSE_LINEFEED "\x1BM"
52 /* Set cursor to top left corner and clear screen */
53 #define ANSI_HOME_CLEAR "\x1B[H\x1B[2J"
55 int reset_terminal_fd(int fd
, bool switch_to_text
);
56 int reset_terminal(const char *name
);
58 int open_terminal(const char *name
, int mode
);
60 /* Flags for tweaking the way we become the controlling process of a terminal. */
61 typedef enum AcquireTerminalFlags
{
62 /* Try to become the controlling process of the TTY. If we can't return -EPERM. */
63 ACQUIRE_TERMINAL_TRY
= 0,
65 /* Tell the kernel to forcibly make us the controlling process of the TTY. Returns -EPERM if the kernel doesn't allow that. */
66 ACQUIRE_TERMINAL_FORCE
= 1,
68 /* If we can't become the controlling process of the TTY right-away, then wait until we can. */
69 ACQUIRE_TERMINAL_WAIT
= 2,
71 /* Pick one of the above, and then OR this flag in, in order to request permissive behaviour, if we can't become controlling process then don't mind */
72 ACQUIRE_TERMINAL_PERMISSIVE
= 1 << 2,
73 } AcquireTerminalFlags
;
75 int acquire_terminal(const char *name
, AcquireTerminalFlags flags
, usec_t timeout
);
76 int release_terminal(void);
78 int terminal_vhangup_fd(int fd
);
79 int terminal_vhangup(const char *name
);
83 int read_one_char(FILE *f
, char *ret
, usec_t timeout
, bool *need_nl
);
84 int ask_char(char *ret
, const char *replies
, const char *text
, ...) _printf_(3, 4);
85 int ask_string(char **ret
, const char *text
, ...) _printf_(2, 3);
87 int vt_disallocate(const char *name
);
89 int resolve_dev_console(char **ret
);
90 int get_kernel_consoles(char ***ret
);
91 bool tty_is_vc(const char *tty
);
92 bool tty_is_vc_resolve(const char *tty
);
93 bool tty_is_console(const char *tty
) _pure_
;
94 int vtnr_from_tty(const char *tty
);
95 const char *default_term_for_tty(const char *tty
);
97 int make_console_stdio(void);
99 int fd_columns(int fd
);
100 unsigned columns(void);
101 int fd_lines(int fd
);
102 unsigned lines(void);
104 void columns_lines_cache_reset(int _unused_ signum
);
105 void reset_terminal_feature_caches(void);
108 bool terminal_is_dumb(void);
109 bool colors_enabled(void);
110 bool underline_enabled(void);
111 bool dev_console_colors_enabled(void);
113 #define DEFINE_ANSI_FUNC(name, NAME) \
114 static inline const char *ansi_##name(void) { \
115 return colors_enabled() ? ANSI_##NAME : ""; \
118 #define DEFINE_ANSI_FUNC_UNDERLINE(name, NAME, REPLACEMENT) \
119 static inline const char *ansi_##name(void) { \
120 return underline_enabled() ? ANSI_##NAME : \
121 colors_enabled() ? ANSI_##REPLACEMENT : ""; \
124 DEFINE_ANSI_FUNC(normal
, NORMAL
);
125 DEFINE_ANSI_FUNC(highlight
, HIGHLIGHT
);
126 DEFINE_ANSI_FUNC(red
, RED
);
127 DEFINE_ANSI_FUNC(green
, GREEN
);
128 DEFINE_ANSI_FUNC(yellow
, YELLOW
);
129 DEFINE_ANSI_FUNC(blue
, BLUE
);
130 DEFINE_ANSI_FUNC(magenta
, MAGENTA
);
131 DEFINE_ANSI_FUNC(grey
, GREY
);
132 DEFINE_ANSI_FUNC(highlight_red
, HIGHLIGHT_RED
);
133 DEFINE_ANSI_FUNC(highlight_green
, HIGHLIGHT_GREEN
);
134 DEFINE_ANSI_FUNC(highlight_yellow
, HIGHLIGHT_YELLOW
);
135 DEFINE_ANSI_FUNC(highlight_blue
, HIGHLIGHT_BLUE
);
136 DEFINE_ANSI_FUNC(highlight_magenta
, HIGHLIGHT_MAGENTA
);
137 DEFINE_ANSI_FUNC(highlight_grey
, HIGHLIGHT_GREY
);
139 DEFINE_ANSI_FUNC_UNDERLINE(underline
, UNDERLINE
, NORMAL
);
140 DEFINE_ANSI_FUNC_UNDERLINE(highlight_underline
, HIGHLIGHT_UNDERLINE
, HIGHLIGHT
);
141 DEFINE_ANSI_FUNC_UNDERLINE(highlight_red_underline
, HIGHLIGHT_RED_UNDERLINE
, HIGHLIGHT_RED
);
142 DEFINE_ANSI_FUNC_UNDERLINE(highlight_green_underline
, HIGHLIGHT_GREEN_UNDERLINE
, HIGHLIGHT_GREEN
);
143 DEFINE_ANSI_FUNC_UNDERLINE(highlight_yellow_underline
, HIGHLIGHT_YELLOW_UNDERLINE
, HIGHLIGHT_YELLOW
);
144 DEFINE_ANSI_FUNC_UNDERLINE(highlight_blue_underline
, HIGHLIGHT_BLUE_UNDERLINE
, HIGHLIGHT_BLUE
);
145 DEFINE_ANSI_FUNC_UNDERLINE(highlight_magenta_underline
, HIGHLIGHT_MAGENTA_UNDERLINE
, HIGHLIGHT_MAGENTA
);
146 DEFINE_ANSI_FUNC_UNDERLINE(highlight_grey_underline
, HIGHLIGHT_GREY_UNDERLINE
, HIGHLIGHT_GREY
);
148 int get_ctty_devnr(pid_t pid
, dev_t
*d
);
149 int get_ctty(pid_t
, dev_t
*_devnr
, char **r
);
151 int getttyname_malloc(int fd
, char **r
);
152 int getttyname_harder(int fd
, char **r
);
154 int ptsname_malloc(int fd
, char **ret
);
156 int openpt_allocate(int flags
, char **ret_slave
);
157 int openpt_allocate_in_namespace(pid_t pid
, int flags
, char **ret_slave
);
158 int open_terminal_in_namespace(pid_t pid
, const char *name
, int mode
);
160 int vt_default_utf8(void);
161 int vt_verify_kbmode(int fd
);
162 int vt_reset_keyboard(int fd
);
163 int vt_restore(int fd
);
164 int vt_release(int fd
, bool restore_vt
);
166 void get_log_colors(int priority
, const char **on
, const char **off
, const char **highlight
);
168 /* This assumes there is a 'tty' group */
169 #define TTY_MODE 0620