1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <sys/ioctl.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <sys/types.h>

8bdbb8d9cbe1d35708385573d70984ab4533812dLennart Poettering#include <sys/stat.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <termios.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <unistd.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <fcntl.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <signal.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <time.h>

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering#include <assert.h>

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering#include <poll.h>

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering#include <linux/vt.h>

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering#include <linux/tiocl.h>

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering#include <linux/kd.h>

eef46c372f64f40dd75415b2c504c73138719c8dLennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen#include "terminal-util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "time-util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "process-util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "fileio.h"

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering#include "path-util.h"

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersenstatic volatile unsigned cached_columns = 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic volatile unsigned cached_lines = 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poetteringint chvt(int vt) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_close_ int fd;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (fd < 0)

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering return -errno;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (vt <= 0) {

f2cbe59e113f08549949a76ac5b9b3972df4cc30Lennart Poettering int tiocl[2] = {

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering TIOCL_GETKMSGREDIRECT,

3d7415f43f0fe6a821d7bc4a341ba371e8a30ef3Lennart Poettering 0

0b452006de98294d1690f045f6ea2f7f6630ec3bRonny Chevalier };

288a74cce597f81d3ba01d8a5ca7d2ba5b654b7eRonny Chevalier

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ioctl(fd, TIOCLINUX, tiocl) < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -errno;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering vt = tiocl[0] <= 0 ? 1 : tiocl[0];

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

e56056e93d33619a3acf13e483900b4f8938228fThomas Hindoe Paaboel Andersen

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ioctl(fd, VT_ACTIVATE, vt) < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -errno;

d21ed1ead18d16d35c30299a69d3366847f8a039Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering}

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering

d8f52ed25a9edce75fda5251c977b7898e33887eLennart Poetteringint read_one_char(FILE *f, char *ret, usec_t t, bool *need_nl) {

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering struct termios old_termios, new_termios;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering char c, line[LINE_MAX];

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

3d7415f43f0fe6a821d7bc4a341ba371e8a30ef3Lennart Poettering assert(f);

6e18cc9fa078d2a967251017ddb5baefb104b720Lennart Poettering assert(ret);

3d7415f43f0fe6a821d7bc4a341ba371e8a30ef3Lennart Poettering

587fec427c80b6c34dcf1d7570f891fcb652a7c5Lennart Poettering if (tcgetattr(fileno(f), &old_termios) >= 0) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_termios = old_termios;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_termios.c_lflag &= ~ICANON;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_termios.c_cc[VMIN] = 1;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_termios.c_cc[VTIME] = 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (tcsetattr(fileno(f), TCSADRAIN, &new_termios) >= 0) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering size_t k;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering if (t != USEC_INFINITY) {

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering if (fd_wait_for_event(fileno(f), POLLIN, t) <= 0) {

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering tcsetattr(fileno(f), TCSADRAIN, &old_termios);

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering return -ETIMEDOUT;

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering }

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering }

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering k = fread(&c, 1, 1, f);

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering tcsetattr(fileno(f), TCSADRAIN, &old_termios);

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering if (k <= 0)

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering return -EIO;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering if (need_nl)

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering *need_nl = c != '\n';

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering *ret = c;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering return 0;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering }

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering }

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (t != USEC_INFINITY) {

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (fd_wait_for_event(fileno(f), POLLIN, t) <= 0)

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering return -ETIMEDOUT;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering }

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering errno = 0;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (!fgets(line, sizeof(line), f))

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering return errno ? -errno : -EIO;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering truncate_nl(line);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (strlen(line) != 1)

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return -EBADMSG;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (need_nl)

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen *need_nl = false;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering *ret = line[0];

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen return 0;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering}

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint ask_char(char *ret, const char *replies, const char *text, ...) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering assert(ret);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(replies);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(text);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen for (;;) {

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen va_list ap;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen char c;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen bool need_nl = true;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen if (on_tty())

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen fputs(ANSI_HIGHLIGHT, stdout);

3d7415f43f0fe6a821d7bc4a341ba371e8a30ef3Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen va_start(ap, text);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen vprintf(text, ap);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering va_end(ap);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (on_tty())

3d7415f43f0fe6a821d7bc4a341ba371e8a30ef3Lennart Poettering fputs(ANSI_NORMAL, stdout);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

5b30bef856e89a571df57b7b953e9a1409d9acedLennart Poettering fflush(stdout);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen r = read_one_char(stdin, &c, USEC_INFINITY, &need_nl);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (r < 0) {

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (r == -EBADMSG) {

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering puts("Bad input, please try again.");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering continue;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering }

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering putchar('\n');

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering return r;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering }

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (need_nl)

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering putchar('\n');

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (strchr(replies, c)) {

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering *ret = c;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering return 0;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering }

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering puts("Read unexpected character, please try again.");

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering }

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersenint ask_string(char **ret, const char *text, ...) {

5b30bef856e89a571df57b7b953e9a1409d9acedLennart Poettering assert(ret);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen assert(text);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen for (;;) {

5b30bef856e89a571df57b7b953e9a1409d9acedLennart Poettering char line[LINE_MAX];

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering va_list ap;

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (on_tty())

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering fputs(ANSI_HIGHLIGHT, stdout);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering va_start(ap, text);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering vprintf(text, ap);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering va_end(ap);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering if (on_tty())

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering fputs(ANSI_NORMAL, stdout);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering fflush(stdout);

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering errno = 0;

e56056e93d33619a3acf13e483900b4f8938228fThomas Hindoe Paaboel Andersen if (!fgets(line, sizeof(line), stdin))

0b63e2789f984e84f40bf6e49f5da15c87298cedLennart Poettering return errno ? -errno : -EIO;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!endswith(line, "\n"))

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering putchar('\n');

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering else {

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering char *s;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering if (isempty(line))

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering continue;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering truncate_nl(line);

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering s = strdup(line);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering if (!s)

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering return -ENOMEM;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering *ret = s;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering return 0;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering }

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering }

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering}

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poetteringint reset_terminal_fd(int fd, bool switch_to_text) {

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering struct termios termios;

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering int r = 0;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering /* Set terminal to some sane defaults */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering assert(fd >= 0);

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering /* We leave locked terminal attributes untouched, so that

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering /* Disable exclusive mode, just in case */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering (void) ioctl(fd, TIOCNXCL);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering /* Switch to text mode */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering if (switch_to_text)

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering (void) ioctl(fd, KDSETMODE, KD_TEXT);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering /* Enable console unicode mode */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering (void) ioctl(fd, KDSKBMODE, K_UNICODE);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering if (tcgetattr(fd, &termios) < 0) {

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering r = -errno;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering goto finish;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering }

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering /* We only reset the stuff that matters to the software. How

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_iflag &= ~(IGNBRK | BRKINT | ISTRIP | INLCR | IGNCR | IUCLC);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_iflag |= ICRNL | IMAXBEL | IUTF8;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering termios.c_oflag |= ONLCR;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering termios.c_cflag |= CREAD;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering termios.c_lflag = ISIG | ICANON | IEXTEN | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOPRT | ECHOKE;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VINTR] = 03; /* ^C */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VQUIT] = 034; /* ^\ */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VERASE] = 0177;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VKILL] = 025; /* ^X */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VEOF] = 04; /* ^D */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VSTART] = 021; /* ^Q */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VSTOP] = 023; /* ^S */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VSUSP] = 032; /* ^Z */

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering termios.c_cc[VLNEXT] = 026; /* ^V */

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering termios.c_cc[VWERASE] = 027; /* ^W */

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering termios.c_cc[VREPRINT] = 022; /* ^R */

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering termios.c_cc[VEOL] = 0;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering termios.c_cc[VEOL2] = 0;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering termios.c_cc[VTIME] = 0;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering termios.c_cc[VMIN] = 1;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering if (tcsetattr(fd, TCSANOW, &termios) < 0)

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering r = -errno;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poetteringfinish:

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering /* Just in case, flush all crap out */

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering (void) tcflush(fd, TCIOFLUSH);

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering return r;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering}

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poetteringint reset_terminal(const char *name) {

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering _cleanup_close_ int fd = -1;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering /* We open the terminal with O_NONBLOCK here, to ensure we

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering if (fd < 0)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return fd;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return reset_terminal_fd(fd, true);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering}

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poetteringint open_terminal(const char *name, int mode) {

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering int fd, r;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering unsigned c = 0;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering /*

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering if (mode & O_CREAT)

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering return -EINVAL;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering for (;;) {

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering fd = open(name, mode, 0);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering if (fd >= 0)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering break;

10f9c75519671e7c7ab8993b54fe22da7c2d0c38Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering if (errno != EIO)

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering return -errno;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

8937e7b68940d0fa0d0aab90eb7425fa7dccebc9Lennart Poettering /* Max 1s in total */

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering if (c >= 20)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return -errno;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering usleep(50 * USEC_PER_MSEC);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering c++;

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering }

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering r = isatty(fd);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering if (r < 0) {

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering safe_close(fd);

cd61c3bfd718fb398cc53ced906266a9297782c9Lennart Poettering return -errno;

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering }

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen if (!r) {

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering safe_close(fd);

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering return -ENOTTY;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering }

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering return fd;

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering}

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poetteringint acquire_terminal(

d21ed1ead18d16d35c30299a69d3366847f8a039Lennart Poettering const char *name,

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering bool fail,

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering bool force,

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering bool ignore_tiocstty_eperm,

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering usec_t timeout) {

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering int fd = -1, notify = -1, r = 0, wd = -1;

a7893c6b28772edbc7e1fea3c209caa54d465648Lennart Poettering usec_t ts = 0;

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering assert(name);

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering /* We use inotify to be notified when the tty is closed. We

5b30bef856e89a571df57b7b953e9a1409d9acedLennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering if (timeout != USEC_INFINITY)

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering ts = now(CLOCK_MONOTONIC);

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering if (!fail && !force) {

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering notify = inotify_init1(IN_CLOEXEC | (timeout != USEC_INFINITY ? IN_NONBLOCK : 0));

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering if (notify < 0) {

9d12709626bccc0cae677a7035f62efe6aabb4abLennart Poettering r = -errno;

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering goto fail;

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering }

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering wd = inotify_add_watch(notify, name, IN_CLOSE);

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering if (wd < 0) {

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering r = -errno;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering goto fail;

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering }

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering }

aa1936ea1a89c2bb968ba33e3274898a4eeae771Lennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering for (;;) {

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering struct sigaction sa_old, sa_new = {

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering .sa_handler = SIG_IGN,

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering .sa_flags = SA_RESTART,

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering };

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (notify >= 0) {

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering r = flush_fd(notify);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (r < 0)

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering goto fail;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering }

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering /* We pass here O_NOCTTY only so that we can check the return

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (fd < 0)

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering return fd;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering /* First, try to get the tty */

0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering if (ioctl(fd, TIOCSCTTY, force) < 0)

0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering r = -errno;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering /* Sometimes it makes sense to ignore TIOCSCTTY

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (r < 0 && r == -EPERM && ignore_tiocstty_eperm)

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering r = 0;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (r < 0 && (force || fail || r != -EPERM))

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering goto fail;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (r >= 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering break;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering assert(!fail);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering assert(!force);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering assert(notify >= 0);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering for (;;) {

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering union inotify_event_buffer buffer;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering struct inotify_event *e;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering ssize_t l;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (timeout != USEC_INFINITY) {

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering usec_t n;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering n = now(CLOCK_MONOTONIC);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (ts + timeout < n) {

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering r = -ETIMEDOUT;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering goto fail;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering }

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering r = fd_wait_for_event(fd, POLLIN, ts + timeout - n);

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering if (r < 0)

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering goto fail;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering if (r == 0) {

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering r = -ETIMEDOUT;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering goto fail;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering l = read(notify, &buffer, sizeof(buffer));

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering if (l < 0) {

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering if (errno == EINTR || errno == EAGAIN)

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering continue;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering r = -errno;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering goto fail;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering FOREACH_INOTIFY_EVENT(e, buffer, l) {

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering if (e->wd != wd || !(e->mask & IN_CLOSE)) {

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering r = -EIO;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering goto fail;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering break;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering /* We close the tty fd here since if the old session

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering fd = safe_close(fd);

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering }

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering safe_close(notify);

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering return fd;

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poetteringfail:

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering safe_close(fd);

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering safe_close(notify);

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sieversint release_terminal(void) {

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers static const struct sigaction sa_new = {

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering .sa_handler = SIG_IGN,

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers .sa_flags = SA_RESTART,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering };

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering _cleanup_close_ int fd = -1;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering struct sigaction sa_old;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r = 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen fd = open("/dev/tty", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (fd < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -errno;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering /* Temporarily ignore SIGHUP, so that we don't get SIGHUP'ed

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert_se(sigaction(SIGHUP, &sa_new, &sa_old) == 0);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ioctl(fd, TIOCNOTTY) < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = -errno;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert_se(sigaction(SIGHUP, &sa_old, NULL) == 0);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poetteringint terminal_vhangup_fd(int fd) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(fd >= 0);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ioctl(fd, TIOCVHANGUP) < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -errno;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint terminal_vhangup(const char *name) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_close_ int fd;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (fd < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return fd;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return terminal_vhangup_fd(fd);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint vt_disallocate(const char *name) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_close_ int fd = -1;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering unsigned u;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* Deallocate the VT if possible. If not possible

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!startswith(name, "/dev/"))

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -EINVAL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!tty_is_vc(name)) {

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering /* So this is not a VT. I guess we cannot deallocate

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (fd < 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return fd;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering loop_write(fd,

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering "\033[r" /* clear scrolling region */

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering "\033[H" /* move home */

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering "\033[2J", /* clear screen */

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering 10, false);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return 0;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering }

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (!startswith(name, "/dev/tty"))

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return -EINVAL;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering r = safe_atou(name+8, &u);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (r < 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return r;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (u <= 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return -EINVAL;

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering /* Try to deallocate */

878cd7e95ca303f9851d227a22d2022bd49944b0Lennart Poettering fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC|O_NONBLOCK);

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering if (fd < 0)

717603e391b52983ca1fd218e7333a1b9dfc5c05Lennart Poettering return fd;

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering r = ioctl(fd, VT_DISALLOCATE, u);

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering fd = safe_close(fd);

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering if (r >= 0)

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering return 0;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering if (errno != EBUSY)

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering return -errno;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering /* Couldn't deallocate, so let's clear it fully with

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering fd = open_terminal(name, O_RDWR|O_NOCTTY|O_CLOEXEC);

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering if (fd < 0)

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering return fd;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering loop_write(fd,

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering "\033[r" /* clear scrolling region */

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering "\033[H" /* move home */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "\033[3J", /* clear screen including scrollback, requires Linux 2.6.40 */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering 10, false);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering}

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poetteringint make_console_stdio(void) {

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering int fd, r;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering /* Make /dev/console the controlling terminal and stdin/stdout/stderr */

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering fd = acquire_terminal("/dev/console", false, true, true, USEC_INFINITY);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (fd < 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return log_error_errno(fd, "Failed to acquire terminal: %m");

e7e9b6bb0b0bc5b1eb256a44f8afec6b634f26efZbigniew Jędrzejewski-Szmek

e7e9b6bb0b0bc5b1eb256a44f8afec6b634f26efZbigniew Jędrzejewski-Szmek r = reset_terminal_fd(fd, true);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (r < 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering log_warning_errno(r, "Failed to reset terminal, ignoring: %m");

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering r = make_stdio(fd);

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (r < 0)

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return log_error_errno(r, "Failed to duplicate terminal fd: %m");

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering return 0;

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

a6c616024db23fef34152c1432892824a07799ccLennart Poetteringint status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) {

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers static const char status_indent[] = " "; /* "[" STATUS "] " */

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering _cleanup_free_ char *s = NULL;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering _cleanup_close_ int fd = -1;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering struct iovec iovec[6] = {};

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering int n = 0;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering static bool prev_ephemeral;

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering assert(format);

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering

8b0cc9a36c8f92f010f2e8465942d2cd7c580d78Lennart Poettering /* This is independent of logging, as status messages are

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers if (vasprintf(&s, format, ap) < 0)

a6c616024db23fef34152c1432892824a07799ccLennart Poettering return log_oom();

a6c616024db23fef34152c1432892824a07799ccLennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen fd = open_terminal("/dev/console", O_WRONLY|O_NOCTTY|O_CLOEXEC);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen if (fd < 0)

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return fd;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ellipse) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering char *e;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering size_t emax, sl;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers int c;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers c = fd_columns(fd);

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers if (c <= 0)

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers c = 80;

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt sl = status ? sizeof(status_indent)-1 : 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering emax = c - sl - 1;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (emax < 3)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering emax = 3;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers e = ellipsize(s, emax, 50);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (e) {

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers free(s);

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers s = e;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers }

89f7c8465cd1ab37347dd0c15920bce31e8225dfLennart Poettering }

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

f48e75cb9a8112d35855c44a156934f2ee0edb2eLennart Poettering if (prev_ephemeral)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering IOVEC_SET_STRING(iovec[n++], "\r" ANSI_ERASE_TO_END_OF_LINE);

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers prev_ephemeral = ephemeral;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (status) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (!isempty(status)) {

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers IOVEC_SET_STRING(iovec[n++], "[");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering IOVEC_SET_STRING(iovec[n++], status);

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering IOVEC_SET_STRING(iovec[n++], "] ");

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering } else

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering IOVEC_SET_STRING(iovec[n++], status_indent);

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering }

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers IOVEC_SET_STRING(iovec[n++], s);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!ephemeral)

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers IOVEC_SET_STRING(iovec[n++], "\n");

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

27e72d6b22890ba4a8cbc05c49667cd1cccf1461Simon Peeters if (writev(fd, iovec, n) < 0)

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen return -errno;

da927ba997d68401563b927f92e6e40e021a8e5cMichal Schmidt

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

a7893c6b28772edbc7e1fea3c209caa54d465648Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering va_list ap;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering int r;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering assert(format);

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering va_start(ap, format);

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering r = status_vprintf(status, ellipse, ephemeral, format, ap);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering va_end(ap);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringbool tty_is_vc(const char *tty) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(tty);

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen return vtnr_from_tty(tty) >= 0;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringbool tty_is_console(const char *tty) {

8c841f21f5042b11acc91cc1b039cb162cbbe8f4Djalal Harouni assert(tty);

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (startswith(tty, "/dev/"))

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering tty += 5;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return streq(tty, "console");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersenint vtnr_from_tty(const char *tty) {

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen int i, r;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen assert(tty);

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen if (startswith(tty, "/dev/"))

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen tty += 5;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen if (!startswith(tty, "tty") )

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen return -EINVAL;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen if (tty[3] < '0' || tty[3] > '9')

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen return -EINVAL;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen

5b30bef856e89a571df57b7b953e9a1409d9acedLennart Poettering r = safe_atoi(tty+3, &i);

5b30bef856e89a571df57b7b953e9a1409d9acedLennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (i < 0 || i > 63)

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers return -EINVAL;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return i;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringchar *resolve_dev_console(char **active) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering char *tty;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering /* Resolve where /dev/console is pointing to, if /sys is actually ours

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (path_is_read_only_fs("/sys") > 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return NULL;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering if (read_one_line_file("/sys/class/tty/console/active", active) < 0)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return NULL;

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering /* If multiple log outputs are configured the last one is what

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering tty = strrchr(*active, ' ');

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (tty)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering tty++;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering else

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering tty = *active;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (streq(tty, "tty0")) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering char *tmp;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering /* Get the active VC (e.g. tty1) */

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (read_one_line_file("/sys/class/tty/tty0/active", &tmp) >= 0) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering free(*active);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering tty = *active = tmp;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering }

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering }

9a14fb6285bdb089d4fc195410de3362cb4f586fThomas Hindoe Paaboel Andersen

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return tty;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringbool tty_is_vc_resolve(const char *tty) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering _cleanup_free_ char *active = NULL;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering assert(tty);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (startswith(tty, "/dev/"))

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering tty += 5;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (streq(tty, "console")) {

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering tty = resolve_dev_console(&active);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (!tty)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return false;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering }

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return tty_is_vc(tty);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering}

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringconst char *default_term_for_tty(const char *tty) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering assert(tty);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return tty_is_vc_resolve(tty) ? "TERM=linux" : "TERM=vt220";

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering}

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poetteringint fd_columns(int fd) {

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering struct winsize ws = {};

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering if (ioctl(fd, TIOCGWINSZ, &ws) < 0)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return -errno;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering if (ws.ws_col <= 0)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return -EIO;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return ws.ws_col;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringunsigned columns(void) {

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering const char *e;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering int c;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering if (_likely_(cached_columns > 0))

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering return cached_columns;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering c = 0;

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering e = getenv("COLUMNS");

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering if (e)

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering (void) safe_atoi(e, &c);

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering

c19de71113f956809995fc68817e055e9f61f607Lennart Poettering if (c <= 0)

b6b1849830f5e4a6065c3b0c993668e500c954d3Lennart Poettering c = fd_columns(STDOUT_FILENO);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (c <= 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering c = 80;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering cached_columns = c;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return cached_columns;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringint fd_lines(int fd) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering struct winsize ws = {};

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (ioctl(fd, TIOCGWINSZ, &ws) < 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return -errno;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (ws.ws_row <= 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return -EIO;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return ws.ws_row;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringunsigned lines(void) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering const char *e;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering int l;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (_likely_(cached_lines > 0))

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return cached_lines;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering l = 0;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering e = getenv("LINES");

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (e)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering (void) safe_atoi(e, &l);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering if (l <= 0)

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering l = fd_lines(STDOUT_FILENO);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering if (l <= 0)

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering l = 24;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering cached_lines = l;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering return cached_lines;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering}

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poetteringvoid columns_lines_cache_reset(int signum) {

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering cached_columns = 0;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering cached_lines = 0;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering}

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poetteringbool on_tty(void) {

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering static int cached_on_tty = -1;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering if (_unlikely_(cached_on_tty < 0))

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering cached_on_tty = isatty(STDOUT_FILENO) > 0;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering return cached_on_tty;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering}

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poetteringint make_stdio(int fd) {

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering int r, s, t;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering assert(fd >= 0);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering r = dup2(fd, STDIN_FILENO);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering s = dup2(fd, STDOUT_FILENO);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering t = dup2(fd, STDERR_FILENO);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering if (fd >= 3)

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering safe_close(fd);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering if (r < 0 || s < 0 || t < 0)

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering return -errno;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering /* Explicitly unset O_CLOEXEC, since if fd was < 3, then

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering fd_cloexec(STDIN_FILENO, false);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering fd_cloexec(STDOUT_FILENO, false);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering fd_cloexec(STDERR_FILENO, false);

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering return 0;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering}

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poetteringint make_null_stdio(void) {

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering int null_fd;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering null_fd = open("/dev/null", O_RDWR|O_NOCTTY);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (null_fd < 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return -errno;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return make_stdio(null_fd);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering}

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poetteringint getttyname_malloc(int fd, char **ret) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering size_t l = 100;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering int r;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering assert(fd >= 0);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering assert(ret);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering for (;;) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering char path[l];

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering r = ttyname_r(fd, path, sizeof(path));

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (r == 0) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering const char *p;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering char *c;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering p = startswith(path, "/dev/");

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering c = strdup(p ?: path);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (!c)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return -ENOMEM;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering *ret = c;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return 0;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering }

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (r != ERANGE)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return -r;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering l *= 2;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering }

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering return 0;

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering}

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poetteringint getttyname_harder(int fd, char **r) {

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering int k;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering char *s = NULL;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering k = getttyname_malloc(fd, &s);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (k < 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return k;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (streq(s, "tty")) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering free(s);

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering return get_ctty(0, NULL, r);

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering }

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering *r = s;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering return 0;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering}

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poetteringint get_ctty_devnr(pid_t pid, dev_t *d) {

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering int r;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering _cleanup_free_ char *line = NULL;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering const char *p;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering unsigned long ttynr;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering assert(pid >= 0);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering p = procfs_file_alloca(pid, "stat");

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering r = read_one_line_file(p, &line);

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering if (r < 0)

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering return r;

fefdc04b38725457a91651218feb7000f6ccc1f4Lennart Poettering

160e3793adf2da2bd9ae3fe6b8881bb937e6e71bLennart Poettering p = strrchr(line, ')');

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!p)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -EIO;

9f6eb1cd58f2ddf2eb6ba0e4de056e13d938af75Kay Sievers

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering p++;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering if (sscanf(p, " "

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen "%*c " /* state */

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering "%*d " /* ppid */

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering "%*d " /* pgrp */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "%*d " /* session */

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering "%lu ", /* ttynr */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering &ttynr) != 1)

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering return -EIO;

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (major(ttynr) == 0 && minor(ttynr) == 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -ENXIO;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering if (d)

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen *d = (dev_t) ttynr;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return 0;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering}

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poetteringint get_ctty(pid_t pid, dev_t *_devnr, char **r) {

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering char fn[sizeof("/dev/char/")-1 + 2*DECIMAL_STR_MAX(unsigned) + 1 + 1], *b = NULL;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering _cleanup_free_ char *s = NULL;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering const char *p;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen dev_t devnr;

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen int k;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

a1da85830bfaa77b9eb9c54693e5573559c97e50Tom Gundersen assert(r);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering k = get_ctty_devnr(pid, &devnr);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (k < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return k;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering sprintf(fn, "/dev/char/%u:%u", major(devnr), minor(devnr));

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering k = readlink_malloc(fn, &s);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (k < 0) {

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering if (k != -ENOENT)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return k;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering /* This is an ugly hack */

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering if (major(devnr) == 136) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (asprintf(&b, "pts/%u", minor(devnr)) < 0)

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return -ENOMEM;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering } else {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* Probably something like the ptys which have no

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering b = strdup(fn + 5);

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering if (!b)

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return -ENOMEM;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering }

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering } else {

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering if (startswith(s, "/dev/"))

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering p = s + 5;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering else if (startswith(s, "../"))

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering p = s + 3;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering else

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering p = s;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering b = strdup(p);

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering if (!b)

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering return -ENOMEM;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering }

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering

1dba654b27918c22e413ac5b3c19301f1ff86ad2Lennart Poettering *r = b;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering if (_devnr)

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering *_devnr = devnr;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering return 0;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering}

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poetteringint ptsname_malloc(int fd, char **ret) {

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering size_t l = 100;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering assert(fd >= 0);

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering assert(ret);

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering for (;;) {

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering char *c;

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering c = new(char, l);

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering if (!c)

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering return -ENOMEM;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (ptsname_r(fd, c, l) == 0) {

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering *ret = c;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering return 0;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering }

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (errno != ERANGE) {

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering free(c);

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering return -errno;

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering }

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering free(c);

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering l *= 2;

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering }

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering}

0370612e0522191f929e3feb7d4937fff3d421e2Lennart Poettering

f2cbe59e113f08549949a76ac5b9b3972df4cc30Lennart Poetteringint ptsname_namespace(int pty, char **ret) {

f2cbe59e113f08549949a76ac5b9b3972df4cc30Lennart Poettering int no = -1, r;

f2cbe59e113f08549949a76ac5b9b3972df4cc30Lennart Poettering

f2cbe59e113f08549949a76ac5b9b3972df4cc30Lennart Poettering /* Like ptsname(), but doesn't assume that the path is

f2cbe59e113f08549949a76ac5b9b3972df4cc30Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering r = ioctl(pty, TIOCGPTN, &no);

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering if (r < 0)

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return -errno;

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (no < 0)

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering return -EIO;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering if (asprintf(ret, "/dev/pts/%i", no) < 0)

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering return -ENOMEM;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering return 0;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering}

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poetteringint openpt_in_namespace(pid_t pid, int flags) {

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering _cleanup_close_pair_ int pair[2] = { -1, -1 };

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering siginfo_t si;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering pid_t child;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering int r;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering assert(pid > 0);

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd);

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (r < 0)

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering return r;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering return -errno;

90adaa25e894a580930ef2c3e65ab8db8295515aLennart Poettering

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering child = fork();

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering if (child < 0)

190700621f95160d364f8ec1d3e360246c41ce75Lennart Poettering return -errno;

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (child == 0) {

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering int master;

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering pair[0] = safe_close(pair[0]);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (r < 0)

da054c3782f25b3b18243f6c76dcfcf90ba70274Lennart Poettering _exit(EXIT_FAILURE);

da054c3782f25b3b18243f6c76dcfcf90ba70274Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering master = posix_openpt(flags|O_NOCTTY|O_CLOEXEC);

da054c3782f25b3b18243f6c76dcfcf90ba70274Lennart Poettering if (master < 0)

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering _exit(EXIT_FAILURE);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (unlockpt(master) < 0)

da054c3782f25b3b18243f6c76dcfcf90ba70274Lennart Poettering _exit(EXIT_FAILURE);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (send_one_fd(pair[1], master, 0) < 0)

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering _exit(EXIT_FAILURE);

190700621f95160d364f8ec1d3e360246c41ce75Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering _exit(EXIT_SUCCESS);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering }

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering pair[1] = safe_close(pair[1]);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering r = wait_for_terminate(child, &si);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (r < 0)

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering return r;

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)

40205d706e1210763ff4c98a317556375bd04bcdLennart Poettering return -EIO;

56159e0d918e9a9be07988133bb2847779325de0Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering return receive_one_fd(pair[0], 0);

c7b7d4493aa03e9ef5fb1e670b8969a48aa494ddLennart Poettering}

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poetteringint open_terminal_in_namespace(pid_t pid, const char *name, int mode) {

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering _cleanup_close_ int pidnsfd = -1, mntnsfd = -1, usernsfd = -1, rootfd = -1;

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering _cleanup_close_pair_ int pair[2] = { -1, -1 };

bf441e3d9371a7e5aa1def66cfc40f0118884644Lennart Poettering siginfo_t si;

de33fc625725d199629ed074d6278504deb23debLennart Poettering pid_t child;

923d8fd381bced1c2d90ca53d18629d61a0f454aLennart Poettering int r;

15411c0cb1192799b37ec8f25d6f30e8d7292fc6David Herrmann

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering r = namespace_open(pid, &pidnsfd, &mntnsfd, NULL, &usernsfd, &rootfd);

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering if (r < 0)

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering return r;

acf97e213e69a97e63ab8f7fad7ecd53608c757aLennart Poettering

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering if (socketpair(AF_UNIX, SOCK_DGRAM, 0, pair) < 0)

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt return -errno;

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering child = fork();

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering if (child < 0)

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt return -errno;

f647962d64e844689f3e2acfce6102fc47e76df2Michal Schmidt

023fb90b83871a15ef7f57e8cd126e3426f99b9eLennart Poettering if (child == 0) {

63c372cb9df3bee01e3bf8cd7f96f336bddda846Lennart Poettering int master;

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering pair[0] = safe_close(pair[0]);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering r = namespace_enter(pidnsfd, mntnsfd, -1, usernsfd, rootfd);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (r < 0)

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering _exit(EXIT_FAILURE);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering master = open_terminal(name, mode|O_NOCTTY|O_CLOEXEC);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (master < 0)

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering _exit(EXIT_FAILURE);

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering

0ec5543c4c0318552a4dcdd83210793347b93081Lennart Poettering if (send_one_fd(pair[1], master, 0) < 0)

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering _exit(EXIT_FAILURE);

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering _exit(EXIT_SUCCESS);

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering }

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering pair[1] = safe_close(pair[1]);

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering r = wait_for_terminate(child, &si);

2723b3b51d409340558e46e37e90525d4f880fe1Lennart Poettering if (r < 0)

40205d706e1210763ff4c98a317556375bd04bcdLennart Poettering return r;

40205d706e1210763ff4c98a317556375bd04bcdLennart Poettering if (si.si_code != CLD_EXITED || si.si_status != EXIT_SUCCESS)

785890acf6d629ff881a1f065f431df1b7fc8c7aLennart Poettering return -EIO;

40205d706e1210763ff4c98a317556375bd04bcdLennart Poettering

04d39279245834494baccfdb9349db8bf80abd13Lennart Poettering return receive_one_fd(pair[0], 0);

40205d706e1210763ff4c98a317556375bd04bcdLennart Poettering}

40205d706e1210763ff4c98a317556375bd04bcdLennart Poettering