X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-button.c;h=e53dd63c29756e79088cf83c70f9dd361ffd2bbf;hp=720071a2a846faeb8cd9b0b9e51ba0c32bdc8a62;hb=d5673993ad3bf38d0aeba8dbd025d6f4527f0169;hpb=ed4ba7e4f652150310d062ffbdfefb4521ce1054

diff --git a/src/login/logind-button.c b/src/login/logind-button.c
index 720071a2a..e53dd63c2 100644
--- a/src/login/logind-button.c
+++ b/src/login/logind-button.c
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
 /***
   This file is part of systemd.
 
@@ -19,19 +17,32 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-#include <assert.h>
-#include <string.h>
 #include <errno.h>
 #include <fcntl.h>
+#include <string.h>
 #include <sys/ioctl.h>
 #include <unistd.h>
 #include <linux/input.h>
 
 #include "sd-messages.h"
-#include "conf-parser.h"
-#include "util.h"
-#include "special.h"
+
+#include "alloc-util.h"
+#include "fd-util.h"
 #include "logind-button.h"
+#include "string-util.h"
+#include "util.h"
+
+#define CONST_MAX4(a, b, c, d) CONST_MAX(CONST_MAX(a, b), CONST_MAX(c, d))
+
+#define ULONG_BITS (sizeof(unsigned long)*8)
+
+static bool bitset_get(const unsigned long *bits, unsigned i) {
+        return (bits[i / ULONG_BITS] >> (i % ULONG_BITS)) & 1UL;
+}
+
+static void bitset_put(unsigned long *bits, unsigned i) {
+        bits[i / ULONG_BITS] |= (unsigned long) 1 << (i % ULONG_BITS);
+}
 
 Button* button_new(Manager *m, const char *name) {
         Button *b;
@@ -44,15 +55,12 @@ Button* button_new(Manager *m, const char *name) {
                 return NULL;
 
         b->name = strdup(name);
-        if (!b->name) {
-                free(b);
-                return NULL;
-        }
+        if (!b->name)
+                return mfree(b);
 
         if (hashmap_put(m->buttons, b->name, b) < 0) {
                 free(b->name);
-                free(b);
-                return NULL;
+                return mfree(b);
         }
 
         b->manager = m;
@@ -69,12 +77,11 @@ void button_free(Button *b) {
         sd_event_source_unref(b->io_event_source);
         sd_event_source_unref(b->check_event_source);
 
-        if (b->fd >= 0) {
+        if (b->fd >= 0)
                 /* If the device has been unplugged close() returns
                  * ENODEV, let's ignore this, hence we don't use
-                 * close_nointr_nofail() */
-                close(b->fd);
-        }
+                 * safe_close() */
+                (void) close(b->fd);
 
         free(b->name);
         free(b->seat);
@@ -97,13 +104,27 @@ int button_set_seat(Button *b, const char *sn) {
         return 0;
 }
 
+static void button_lid_switch_handle_action(Manager *manager, bool is_edge) {
+        HandleAction handle_action;
+
+        assert(manager);
+
+        /* If we are docked, handle the lid switch differently */
+        if (manager_is_docked_or_external_displays(manager))
+                handle_action = manager->handle_lid_switch_docked;
+        else
+                handle_action = manager->handle_lid_switch;
+
+        manager_handle_action(manager, INHIBIT_HANDLE_LID_SWITCH, handle_action, manager->lid_switch_ignore_inhibited, is_edge);
+}
+
 static int button_recheck(sd_event_source *e, void *userdata) {
         Button *b = userdata;
 
         assert(b);
         assert(b->lid_closed);
 
-        manager_handle_action(b->manager, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, false);
+        button_lid_switch_handle_action(b->manager, false);
         return 1;
 }
 
@@ -145,8 +166,8 @@ static int button_dispatch(sd_event_source *s, int fd, uint32_t revents, void *u
                 case KEY_POWER:
                 case KEY_POWER2:
                         log_struct(LOG_INFO,
-                                   "MESSAGE=Power key pressed.",
-                                   MESSAGE_ID(SD_MESSAGE_POWER_KEY),
+                                   LOG_MESSAGE("Power key pressed."),
+                                   "MESSAGE_ID=" SD_MESSAGE_POWER_KEY_STR,
                                    NULL);
 
                         manager_handle_action(b->manager, INHIBIT_HANDLE_POWER_KEY, b->manager->handle_power_key, b->manager->power_key_ignore_inhibited, true);
@@ -160,8 +181,8 @@ static int button_dispatch(sd_event_source *s, int fd, uint32_t revents, void *u
 
                 case KEY_SLEEP:
                         log_struct(LOG_INFO,
-                                   "MESSAGE=Suspend key pressed.",
-                                   MESSAGE_ID(SD_MESSAGE_SUSPEND_KEY),
+                                   LOG_MESSAGE("Suspend key pressed."),
+                                   "MESSAGE_ID=" SD_MESSAGE_SUSPEND_KEY_STR,
                                    NULL);
 
                         manager_handle_action(b->manager, INHIBIT_HANDLE_SUSPEND_KEY, b->manager->handle_suspend_key, b->manager->suspend_key_ignore_inhibited, true);
@@ -169,8 +190,8 @@ static int button_dispatch(sd_event_source *s, int fd, uint32_t revents, void *u
 
                 case KEY_SUSPEND:
                         log_struct(LOG_INFO,
-                                   "MESSAGE=Hibernate key pressed.",
-                                   MESSAGE_ID(SD_MESSAGE_HIBERNATE_KEY),
+                                   LOG_MESSAGE("Hibernate key pressed."),
+                                   "MESSAGE_ID=" SD_MESSAGE_HIBERNATE_KEY_STR,
                                    NULL);
 
                         manager_handle_action(b->manager, INHIBIT_HANDLE_HIBERNATE_KEY, b->manager->handle_hibernate_key, b->manager->hibernate_key_ignore_inhibited, true);
@@ -181,59 +202,168 @@ static int button_dispatch(sd_event_source *s, int fd, uint32_t revents, void *u
 
                 if (ev.code == SW_LID) {
                         log_struct(LOG_INFO,
-                                   "MESSAGE=Lid closed.",
-                                   MESSAGE_ID(SD_MESSAGE_LID_CLOSED),
+                                   LOG_MESSAGE("Lid closed."),
+                                   "MESSAGE_ID=" SD_MESSAGE_LID_CLOSED_STR,
                                    NULL);
 
                         b->lid_closed = true;
-                        manager_handle_action(b->manager, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, true);
+                        button_lid_switch_handle_action(b->manager, true);
                         button_install_check_event_source(b);
+
+                } else if (ev.code == SW_DOCK) {
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("System docked."),
+                                   "MESSAGE_ID=" SD_MESSAGE_SYSTEM_DOCKED_STR,
+                                   NULL);
+
+                        b->docked = true;
                 }
 
         } else if (ev.type == EV_SW && ev.value == 0) {
 
                 if (ev.code == SW_LID) {
                         log_struct(LOG_INFO,
-                                   "MESSAGE=Lid opened.",
-                                   MESSAGE_ID(SD_MESSAGE_LID_OPENED),
+                                   LOG_MESSAGE("Lid opened."),
+                                   "MESSAGE_ID=" SD_MESSAGE_LID_OPENED_STR,
                                    NULL);
 
                         b->lid_closed = false;
                         b->check_event_source = sd_event_source_unref(b->check_event_source);
+
+                } else if (ev.code == SW_DOCK) {
+                        log_struct(LOG_INFO,
+                                   LOG_MESSAGE("System undocked."),
+                                   "MESSAGE_ID=" SD_MESSAGE_SYSTEM_UNDOCKED_STR,
+                                   NULL);
+
+                        b->docked = false;
                 }
         }
 
         return 0;
 }
 
+static int button_suitable(Button *b) {
+        unsigned long types[CONST_MAX(EV_KEY, EV_SW)/ULONG_BITS+1];
+
+        assert(b);
+        assert(b->fd);
+
+        if (ioctl(b->fd, EVIOCGBIT(EV_SYN, sizeof(types)), types) < 0)
+                return -errno;
+
+        if (bitset_get(types, EV_KEY)) {
+                unsigned long keys[CONST_MAX4(KEY_POWER, KEY_POWER2, KEY_SLEEP, KEY_SUSPEND)/ULONG_BITS+1];
+
+                if (ioctl(b->fd, EVIOCGBIT(EV_KEY, sizeof(keys)), keys) < 0)
+                        return -errno;
+
+                if (bitset_get(keys, KEY_POWER) ||
+                    bitset_get(keys, KEY_POWER2) ||
+                    bitset_get(keys, KEY_SLEEP) ||
+                    bitset_get(keys, KEY_SUSPEND))
+                        return true;
+        }
+
+        if (bitset_get(types, EV_SW)) {
+                unsigned long switches[CONST_MAX(SW_LID, SW_DOCK)/ULONG_BITS+1];
+
+                if (ioctl(b->fd, EVIOCGBIT(EV_SW, sizeof(switches)), switches) < 0)
+                        return -errno;
+
+                if (bitset_get(switches, SW_LID) ||
+                    bitset_get(switches, SW_DOCK))
+                        return true;
+        }
+
+        return false;
+}
+
+static int button_set_mask(Button *b) {
+        unsigned long
+                types[CONST_MAX(EV_KEY, EV_SW)/ULONG_BITS+1] = {},
+                keys[CONST_MAX4(KEY_POWER, KEY_POWER2, KEY_SLEEP, KEY_SUSPEND)/ULONG_BITS+1] = {},
+                switches[CONST_MAX(SW_LID, SW_DOCK)/ULONG_BITS+1] = {};
+        struct input_mask mask;
+
+        assert(b);
+        assert(b->fd >= 0);
+
+        bitset_put(types, EV_KEY);
+        bitset_put(types, EV_SW);
+
+        mask = (struct input_mask) {
+                .type = EV_SYN,
+                .codes_size = sizeof(types),
+                .codes_ptr = PTR_TO_UINT64(types),
+        };
+
+        if (ioctl(b->fd, EVIOCSMASK, &mask) < 0)
+                /* Log only at debug level if the kernel doesn't do EVIOCSMASK yet */
+                return log_full_errno(IN_SET(errno, ENOTTY, EOPNOTSUPP, EINVAL) ? LOG_DEBUG : LOG_WARNING,
+                                      errno, "Failed to set EV_SYN event mask on /dev/input/%s: %m", b->name);
+
+        bitset_put(keys, KEY_POWER);
+        bitset_put(keys, KEY_POWER2);
+        bitset_put(keys, KEY_SLEEP);
+        bitset_put(keys, KEY_SUSPEND);
+
+        mask = (struct input_mask) {
+                .type = EV_KEY,
+                .codes_size = sizeof(keys),
+                .codes_ptr = PTR_TO_UINT64(keys),
+        };
+
+        if (ioctl(b->fd, EVIOCSMASK, &mask) < 0)
+                return log_warning_errno(errno, "Failed to set EV_KEY event mask on /dev/input/%s: %m", b->name);
+
+        bitset_put(switches, SW_LID);
+        bitset_put(switches, SW_DOCK);
+
+        mask = (struct input_mask) {
+                .type = EV_SW,
+                .codes_size = sizeof(switches),
+                .codes_ptr = PTR_TO_UINT64(switches),
+        };
+
+        if (ioctl(b->fd, EVIOCSMASK, &mask) < 0)
+                return log_warning_errno(errno, "Failed to set EV_SW event mask on /dev/input/%s: %m", b->name);
+
+        return 0;
+}
+
 int button_open(Button *b) {
         char *p, name[256];
         int r;
 
         assert(b);
 
-        if (b->fd >= 0) {
-                close(b->fd);
-                b->fd = -1;
-        }
+        b->fd = safe_close(b->fd);
 
-        p = strappenda("/dev/input/", b->name);
+        p = strjoina("/dev/input/", b->name);
 
         b->fd = open(p, O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK);
-        if (b->fd < 0) {
-                log_warning("Failed to open %s: %m", b->name);
-                return -errno;
+        if (b->fd < 0)
+                return log_warning_errno(errno, "Failed to open %s: %m", p);
+
+        r = button_suitable(b);
+        if (r < 0)
+                return log_warning_errno(r, "Failed to determine whether input device is relevant to us: %m");
+        if (r == 0) {
+                log_debug("Device %s does not expose keys or switches relevant to us, ignoring.", p);
+                return -EADDRNOTAVAIL;
         }
 
         if (ioctl(b->fd, EVIOCGNAME(sizeof(name)), name) < 0) {
-                log_error("Failed to get input name: %m");
-                r = -errno;
+                r = log_error_errno(errno, "Failed to get input name: %m");
                 goto fail;
         }
 
+        (void) button_set_mask(b);
+
         r = sd_event_add_io(b->manager->event, &b->io_event_source, b->fd, EPOLLIN, button_dispatch, b);
         if (r < 0) {
-                log_error("Failed to add button event: %s", strerror(-r));
+                log_error_errno(r, "Failed to add button event: %m");
                 goto fail;
         }
 
@@ -242,13 +372,12 @@ int button_open(Button *b) {
         return 0;
 
 fail:
-        close(b->fd);
-        b->fd = -1;
+        b->fd = safe_close(b->fd);
         return r;
 }
 
-int button_check_lid(Button *b) {
-        uint8_t switches[SW_MAX/8+1] = {};
+int button_check_switches(Button *b) {
+        unsigned long switches[CONST_MAX(SW_LID, SW_DOCK)/ULONG_BITS+1] = {};
         assert(b);
 
         if (b->fd < 0)
@@ -257,12 +386,11 @@ int button_check_lid(Button *b) {
         if (ioctl(b->fd, EVIOCGSW(sizeof(switches)), switches) < 0)
                 return -errno;
 
-        b->lid_closed = (switches[SW_LID/8] >> (SW_LID % 8)) & 1;
+        b->lid_closed = bitset_get(switches, SW_LID);
+        b->docked = bitset_get(switches, SW_DOCK);
 
-        if (b->lid_closed) {
-                manager_handle_action(b->manager, INHIBIT_HANDLE_LID_SWITCH, b->manager->handle_lid_switch, b->manager->lid_switch_ignore_inhibited, true);
+        if (b->lid_closed)
                 button_install_check_event_source(b);
-        }
 
         return 0;
 }