5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <assert.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <errno.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <unistd.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <fcntl.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <sys/ioctl.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <linux/vt.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include <string.h>

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt#include "systemd/sd-id128.h"

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt#include "systemd/sd-messages.h"

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt#include "logind-seat.h"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt#include "logind-acl.h"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt#include "util.h"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt#include "mkdir.h"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt#include "path-util.h"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom GundersenSeat *seat_new(Manager *m, const char *id) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt Seat *s;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(m);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(id);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt s = new0(Seat, 1);

1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen if (!s)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt return NULL;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt s->state_file = strappend("/run/systemd/seats/", id);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt if (!s->state_file) {

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt free(s);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return NULL;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt }

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt s->id = path_get_file_name(s->state_file);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt s->manager = m;

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (hashmap_put(m->seats, s->id, s) < 0) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt free(s->state_file);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt free(s);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt return NULL;

200a0868fcdf7b95f3d8d1fda3aa2aef48d84fddTom Gundersen }

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt return s;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt}

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flyktvoid seat_free(Seat *s) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(s);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (s->in_gc_queue)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt LIST_REMOVE(Seat, gc_queue, s->manager->seat_gc_queue, s);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

f0213e3796b4dd66e546e2de4d677db319f9171bTom Gundersen while (s->sessions)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt session_free(s->sessions);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(!s->active);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt while (s->devices)

851c9f82736c89d423b244a292e153ec7124d309Patrik Flykt device_free(s->devices);

851c9f82736c89d423b244a292e153ec7124d309Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt hashmap_remove(s->manager->seats, s->id);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt free(s->state_file);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt free(s);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt}

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmannint seat_save(Seat *s) {

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann int r;

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering FILE *f;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt char *temp_path;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(s);

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (!s->started)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt return 0;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt r = mkdir_safe_label("/run/systemd/seats", 0755, 0, 0);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (r < 0)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt goto finish;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt r = fopen_temporary(s->state_file, &f, &temp_path);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (r < 0)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt goto finish;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt fchmod(fileno(f), 0644);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt fprintf(f,

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "# This is private data. Do not parse.\n"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "IS_VTCONSOLE=%i\n"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "CAN_MULTI_SESSION=%i\n"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "CAN_TTY=%i\n"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "CAN_GRAPHICAL=%i\n",

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt seat_is_vtconsole(s),

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt seat_can_multi_session(s),

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt seat_can_tty(s),

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt seat_can_graphical(s));

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering if (s->active) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(s->active->user);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt fprintf(f,

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "ACTIVE=%s\n"

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt "ACTIVE_UID=%lu\n",

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt s->active->id,

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt (unsigned long) s->active->user->uid);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt }

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (s->sessions) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt Session *i;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt fputs("SESSIONS=", f);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt LIST_FOREACH(sessions_by_seat, i, s->sessions) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt fprintf(f,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt "%s%c",

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt i->id,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt i->sessions_by_seat_next ? ' ' : '\n');

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt }

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt fputs("UIDS=", f);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt LIST_FOREACH(sessions_by_seat, i, s->sessions)

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt fprintf(f,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt "%lu%c",

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt (unsigned long) i->user->uid,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt i->sessions_by_seat_next ? ' ' : '\n');

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt }

10c9ce615d98e125bc520efa94aebaef250a4061David Herrmann

10c9ce615d98e125bc520efa94aebaef250a4061David Herrmann fflush(f);

10c9ce615d98e125bc520efa94aebaef250a4061David Herrmann

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt if (ferror(f) || rename(temp_path, s->state_file) < 0) {

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt r = -errno;

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt unlink(s->state_file);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt unlink(temp_path);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt }

10c9ce615d98e125bc520efa94aebaef250a4061David Herrmann

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt fclose(f);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt free(temp_path);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flyktfinish:

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (r < 0)

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt log_error("Failed to save seat data for %s: %s", s->id, strerror(-r));

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

10c9ce615d98e125bc520efa94aebaef250a4061David Herrmann return r;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt}

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flyktint seat_load(Seat *s) {

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt assert(s);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt /* There isn't actually anything to read here ... */

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt return 0;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt}

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flyktstatic int vt_allocate(int vtnr) {

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering int fd, r;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt char *p;

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt assert(vtnr >= 1);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt if (asprintf(&p, "/dev/tty%i", vtnr) < 0)

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt return -ENOMEM;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt fd = open_terminal(p, O_RDWR|O_NOCTTY|O_CLOEXEC);

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt free(p);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt r = fd < 0 ? -errno : 0;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (fd >= 0)

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt close_nointr_nofail(fd);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt return r;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt}

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flyktint seat_preallocate_vts(Seat *s) {

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt int r = 0;

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt unsigned i;

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt assert(s);

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering assert(s->manager);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt log_debug("Preallocating VTs...");

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt if (s->manager->n_autovts <= 0)

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt return 0;

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering if (!seat_can_multi_session(s))

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt return 0;

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt for (i = 1; i <= s->manager->n_autovts; i++) {

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt int q;

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt q = vt_allocate(i);

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering if (q < 0) {

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt log_error("Failed to preallocate VT %i: %s", i, strerror(-q));

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt r = q;

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt }

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt }

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt return r;

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt}

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flyktint seat_apply_acls(Seat *s, Session *old_active) {

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt int r;

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt assert(s);

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt

18d29550b5fbc4b0de334b8212d05decdd131f1bPatrik Flykt r = devnode_acl_all(s->manager->udev,

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt s->id,

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt false,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt !!old_active, old_active ? old_active->user->uid : 0,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt !!s->active, s->active ? s->active->user->uid : 0);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt if (r < 0)

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt log_error("Failed to apply ACLs: %s", strerror(-r));

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt return r;

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt}

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flyktint seat_set_active(Seat *s, Session *session) {

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt Session *old_active;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt assert(s);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt assert(!session || session->seat == s);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (session == s->active)

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt return 0;

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt old_active = s->active;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt s->active = session;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt seat_apply_acls(s, old_active);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (session && session->started)

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann session_send_changed(session, "Active\0");

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt if (!session || session->started)

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt seat_send_changed(s, "ActiveSession\0");

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt seat_save(s);

85bd849f09aceb7f972a0697494ea22b2247a5d7Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (session) {

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt session_save(session);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt user_save(session->user);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt }

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (old_active) {

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt session_save(old_active);

e66040417b52be98d41ba1230f25dea65147e8eePatrik Flykt if (!session || session->user != old_active->user)

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt user_save(old_active->user);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt }

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return 0;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt}

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flyktint seat_active_vt_changed(Seat *s, int vtnr) {

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt Session *i, *new_active = NULL;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt int r;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt assert(s);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt assert(vtnr >= 1);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt if (!seat_can_multi_session(s))

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return -EINVAL;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt log_debug("VT changed to %i", vtnr);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt LIST_FOREACH(sessions_by_seat, i, s->sessions)

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann if (i->vtnr == vtnr) {

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann new_active = i;

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering break;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt }

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt r = seat_set_active(s, new_active);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt manager_spawn_autovt(s->manager, vtnr);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return r;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt}

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flyktint seat_read_active_vt(Seat *s) {

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt char t[64];

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt ssize_t k;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt int r, vtnr;

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt assert(s);

f2341e0a87cab1558c84c933956e9181d5fb6c52Lennart Poettering

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt if (!seat_can_multi_session(s))

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return 0;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt lseek(s->manager->console_active_fd, SEEK_SET, 0);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt k = read(s->manager->console_active_fd, t, sizeof(t)-1);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (k <= 0) {

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt log_error("Failed to read current console: %s", k < 0 ? strerror(-errno) : "EOF");

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt return k < 0 ? -errno : -EIO;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt }

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt t[k] = 0;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt truncate_nl(t);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (!startswith(t, "tty")) {

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt log_error("Hm, /sys/class/tty/tty0/active is badly formatted.");

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann return -EIO;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt }

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann r = safe_atoi(t+3, &vtnr);

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann if (r < 0) {

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann log_error("Failed to parse VT number %s", t+3);

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt return r;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt }

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt if (vtnr <= 0) {

575ac4c62e417cb3e963f2bee627e3c10b06691dDavid Herrmann log_error("VT number invalid: %s", t+3);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return -EIO;

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt }

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt return seat_active_vt_changed(s, vtnr);

be3a09b7ffe62b52658e77ae4d6638d1b0dae654Patrik Flykt}

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flyktint seat_start(Seat *s) {

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering assert(s);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering if (s->started)

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt return 0;

c62c4628d9dbc27effd36143c75abe528f561867Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt log_struct(LOG_INFO,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt MESSAGE_ID(SD_MESSAGE_SEAT_START),

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt "SEAT_ID=%s", s->id,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt "MESSAGE=New seat %s.", s->id,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt NULL);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt /* Initialize VT magic stuff */

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt seat_preallocate_vts(s);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt /* Read current VT */

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt seat_read_active_vt(s);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt s->started = true;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt /* Save seat data */

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt seat_save(s);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt seat_send_signal(s, true);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt return 0;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt}

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flyktint seat_stop(Seat *s) {

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt int r = 0;

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt assert(s);

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt if (s->started)

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt log_struct(LOG_INFO,

5c79bd79839f1e50bd3c34a0670037f7965ca5a4Patrik Flykt MESSAGE_ID(SD_MESSAGE_SEAT_STOP),

"SEAT_ID=%s", s->id,

"MESSAGE=Removed seat %s.", s->id,

NULL);

seat_stop_sessions(s);

unlink(s->state_file);

seat_add_to_gc_queue(s);

if (s->started)

seat_send_signal(s, false);

s->started = false;

return r;

}

int seat_stop_sessions(Seat *s) {

Session *session;

int r = 0, k;

assert(s);

LIST_FOREACH(sessions_by_seat, session, s->sessions) {

k = session_stop(session);

if (k < 0)

r = k;

}

return r;

}

int seat_attach_session(Seat *s, Session *session) {

assert(s);

assert(session);

assert(!session->seat);

session->seat = s;

LIST_PREPEND(Session, sessions_by_seat, s->sessions, session);

seat_send_changed(s, "Sessions\0");

/* Note that even if a seat is not multi-session capable it

if (!seat_can_multi_session(s))

seat_set_active(s, session);

return 0;

}

bool seat_is_vtconsole(Seat *s) {

assert(s);

return s->manager->vtconsole == s;

}

bool seat_can_multi_session(Seat *s) {

assert(s);

if (!seat_is_vtconsole(s))

return false;

/* If we can't watch which VT is in the foreground, we don't

return s->manager->console_active_fd >= 0;

}

bool seat_can_tty(Seat *s) {

assert(s);

return seat_is_vtconsole(s);

}

bool seat_has_master_device(Seat *s) {

assert(s);

/* device list is ordered by "master" flag */

return !!s->devices && s->devices->master;

}

bool seat_can_graphical(Seat *s) {

assert(s);

return seat_has_master_device(s);

}

int seat_get_idle_hint(Seat *s, dual_timestamp *t) {

Session *session;

bool idle_hint = true;

dual_timestamp ts = { 0, 0 };

assert(s);

LIST_FOREACH(sessions_by_seat, session, s->sessions) {

dual_timestamp k;

int ih;

ih = session_get_idle_hint(session, &k);

if (ih < 0)

return ih;

if (!ih) {

if (!idle_hint) {

if (k.monotonic > ts.monotonic)

ts = k;

} else {

idle_hint = false;

ts = k;

}

} else if (idle_hint) {

if (k.monotonic > ts.monotonic)

ts = k;

}

}

if (t)

*t = ts;

return idle_hint;

}

int seat_check_gc(Seat *s, bool drop_not_started) {

assert(s);

if (drop_not_started && !s->started)

return 0;

if (seat_is_vtconsole(s))

return 1;

return seat_has_master_device(s);

}

void seat_add_to_gc_queue(Seat *s) {

assert(s);

if (s->in_gc_queue)

return;

LIST_PREPEND(Seat, gc_queue, s->manager->seat_gc_queue, s);

s->in_gc_queue = true;

}

static bool seat_name_valid_char(char c) {

return

(c >= 'a' && c <= 'z') ||

(c >= 'A' && c <= 'Z') ||

(c >= '0' && c <= '9') ||

c == '-' ||

c == '_';

}

bool seat_name_is_valid(const char *name) {

const char *p;

assert(name);

if (!startswith(name, "seat"))

return false;

if (!name[4])

return false;

for (p = name; *p; p++)

if (!seat_name_valid_char(*p))

return false;

if (strlen(name) > 255)

return false;

return true;

}