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https://github.com/checkpoint-restore/criu.git
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bec5a023d1
/dev/tty stands for current terminal which we don't yet implemented a support for. This is a bugfix for upcoming stable version, the proper support of /dev/tty is gonna be implemented separately. Reported-by: Saied Kazemi <saied@google.com> CC: Andrew Vagin <avagin@parallels.com> CC: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
78 lines
1.6 KiB
C
78 lines
1.6 KiB
C
#ifndef __CR_TTY_H__
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#define __CR_TTY_H__
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#include <linux/major.h>
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#include <linux/vt.h>
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#include "files.h"
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/* Kernel's limit */
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#define TERMIOS_NCC 19
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enum {
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TTY_TYPE_UNKNOWN = 0,
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TTY_TYPE_PTM = 1,
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TTY_TYPE_PTS = 2,
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TTY_TYPE_CONSOLE = 3,
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TTY_TYPE_VT = 4,
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TTY_TYPE_MAX
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};
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#define PTMX_PATH "/dev/ptmx"
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#ifndef PTMX_MINOR
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# define PTMX_MINOR 2
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#endif
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#define PTS_FMT "/dev/pts/%d"
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extern const struct fdtype_ops tty_dump_ops;
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static inline int tty_type(int major, int minor)
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{
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switch (major) {
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case TTYAUX_MAJOR:
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if (minor == 2)
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return TTY_TYPE_PTM;
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else if (minor == 1)
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return TTY_TYPE_CONSOLE;
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break;
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case TTY_MAJOR:
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if (minor > MIN_NR_CONSOLES && minor < MAX_NR_CONSOLES)
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/*
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* Minors [MIN_NR_CONSOLES; MAX_NR_CONSOLES] stand
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* for consoles (virtual terminals, VT in terms
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* of kernel).
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*/
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return TTY_TYPE_VT;
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case UNIX98_PTY_MASTER_MAJOR ... (UNIX98_PTY_MASTER_MAJOR + UNIX98_PTY_MAJOR_COUNT - 1):
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return TTY_TYPE_PTM;
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case UNIX98_PTY_SLAVE_MAJOR:
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return TTY_TYPE_PTS;
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}
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return TTY_TYPE_UNKNOWN;
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}
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static inline int is_tty(int major, int minor)
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{
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return tty_type(major, minor) != TTY_TYPE_UNKNOWN;
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}
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static inline int is_pty(int type)
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{
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return (type == TTY_TYPE_PTM || type == TTY_TYPE_PTS);
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}
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extern int dump_verify_tty_sids(void);
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extern struct collect_image_info tty_info_cinfo;
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extern struct collect_image_info tty_cinfo;
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extern int prepare_shared_tty(void);
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extern int tty_setup_slavery(void);
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extern int tty_verify_active_pairs(void);
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extern int tty_prep_fds(void);
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extern void tty_fini_fds(void);
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#define OPT_SHELL_JOB "shell-job"
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#endif /* __CR_TTY_H__ */
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