diff options
author | Luke Shumaker <lukeshu@lukeshu.com> | 2017-05-20 17:35:06 -0400 |
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committer | Luke Shumaker <lukeshu@lukeshu.com> | 2017-05-20 17:35:06 -0400 |
commit | f2f1f2472c5efc541bd53f51289ad58a86fa2d41 (patch) | |
tree | 42807ddc64ab0672744c716d9f952e5673762b9d /src/rfkill | |
parent | 3eed542bbc10978aa0b68a39dd3619edf7a7d90b (diff) |
./tools/notsd-move
Diffstat (limited to 'src/rfkill')
l--------- | src/rfkill/Makefile | 1 | ||||
-rw-r--r-- | src/rfkill/rfkill.c | 426 |
2 files changed, 0 insertions, 427 deletions
diff --git a/src/rfkill/Makefile b/src/rfkill/Makefile deleted file mode 120000 index d0b0e8e008..0000000000 --- a/src/rfkill/Makefile +++ /dev/null @@ -1 +0,0 @@ -../Makefile
\ No newline at end of file diff --git a/src/rfkill/rfkill.c b/src/rfkill/rfkill.c deleted file mode 100644 index 0acdf229ed..0000000000 --- a/src/rfkill/rfkill.c +++ /dev/null @@ -1,426 +0,0 @@ -/*** - This file is part of systemd. - - Copyright 2013 Lennart Poettering - - systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU Lesser General Public License as published by - the Free Software Foundation; either version 2.1 of the License, or - (at your option) any later version. - - systemd is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public License - along with systemd; If not, see <http://www.gnu.org/licenses/>. -***/ - -#include <linux/rfkill.h> -#include <poll.h> - -#include "libudev.h" -#include "sd-daemon.h" - -#include "alloc-util.h" -#include "escape.h" -#include "fd-util.h" -#include "fileio.h" -#include "io-util.h" -#include "mkdir.h" -#include "parse-util.h" -#include "proc-cmdline.h" -#include "string-table.h" -#include "string-util.h" -#include "udev-util.h" -#include "util.h" - -#define EXIT_USEC (5 * USEC_PER_SEC) - -static const char* const rfkill_type_table[NUM_RFKILL_TYPES] = { - [RFKILL_TYPE_ALL] = "all", - [RFKILL_TYPE_WLAN] = "wlan", - [RFKILL_TYPE_BLUETOOTH] = "bluetooth", - [RFKILL_TYPE_UWB] = "uwb", - [RFKILL_TYPE_WIMAX] = "wimax", - [RFKILL_TYPE_WWAN] = "wwan", - [RFKILL_TYPE_GPS] = "gps", - [RFKILL_TYPE_FM] = "fm", - [RFKILL_TYPE_NFC] = "nfc", -}; - -DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(rfkill_type, int); - -static int find_device( - struct udev *udev, - const struct rfkill_event *event, - struct udev_device **ret) { - - _cleanup_free_ char *sysname = NULL; - struct udev_device *device; - const char *name; - - assert(udev); - assert(event); - assert(ret); - - if (asprintf(&sysname, "rfkill%i", event->idx) < 0) - return log_oom(); - - device = udev_device_new_from_subsystem_sysname(udev, "rfkill", sysname); - if (!device) - return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open device: %m"); - - name = udev_device_get_sysattr_value(device, "name"); - if (!name) { - log_debug("Device has no name, ignoring."); - udev_device_unref(device); - return -ENOENT; - } - - log_debug("Operating on rfkill device '%s'.", name); - - *ret = device; - return 0; -} - -static int wait_for_initialized( - struct udev *udev, - struct udev_device *device, - struct udev_device **ret) { - - _cleanup_udev_monitor_unref_ struct udev_monitor *monitor = NULL; - struct udev_device *d; - const char *sysname; - int watch_fd, r; - - assert(udev); - assert(device); - assert(ret); - - if (udev_device_get_is_initialized(device) != 0) { - *ret = udev_device_ref(device); - return 0; - } - - assert_se(sysname = udev_device_get_sysname(device)); - - /* Wait until the device is initialized, so that we can get - * access to the ID_PATH property */ - - monitor = udev_monitor_new_from_netlink(udev, "udev"); - if (!monitor) - return log_error_errno(errno, "Failed to acquire monitor: %m"); - - r = udev_monitor_filter_add_match_subsystem_devtype(monitor, "rfkill", NULL); - if (r < 0) - return log_error_errno(r, "Failed to add rfkill udev match to monitor: %m"); - - r = udev_monitor_enable_receiving(monitor); - if (r < 0) - return log_error_errno(r, "Failed to enable udev receiving: %m"); - - watch_fd = udev_monitor_get_fd(monitor); - if (watch_fd < 0) - return log_error_errno(watch_fd, "Failed to get watch fd: %m"); - - /* Check again, maybe things changed */ - d = udev_device_new_from_subsystem_sysname(udev, "rfkill", sysname); - if (!d) - return log_full_errno(errno == ENOENT ? LOG_DEBUG : LOG_ERR, errno, "Failed to open device: %m"); - - if (udev_device_get_is_initialized(d) != 0) { - *ret = d; - return 0; - } - - for (;;) { - _cleanup_udev_device_unref_ struct udev_device *t = NULL; - - r = fd_wait_for_event(watch_fd, POLLIN, USEC_INFINITY); - if (r == -EINTR) - continue; - if (r < 0) - return log_error_errno(r, "Failed to watch udev monitor: %m"); - - t = udev_monitor_receive_device(monitor); - if (!t) - continue; - - if (streq_ptr(udev_device_get_sysname(device), sysname)) { - *ret = udev_device_ref(t); - return 0; - } - } -} - -static int determine_state_file( - struct udev *udev, - const struct rfkill_event *event, - struct udev_device *d, - char **ret) { - - _cleanup_udev_device_unref_ struct udev_device *device = NULL; - const char *path_id, *type; - char *state_file; - int r; - - assert(event); - assert(d); - assert(ret); - - r = wait_for_initialized(udev, d, &device); - if (r < 0) - return r; - - assert_se(type = rfkill_type_to_string(event->type)); - - path_id = udev_device_get_property_value(device, "ID_PATH"); - if (path_id) { - _cleanup_free_ char *escaped_path_id = NULL; - - escaped_path_id = cescape(path_id); - if (!escaped_path_id) - return log_oom(); - - state_file = strjoin("/var/lib/systemd/rfkill/", escaped_path_id, ":", type, NULL); - } else - state_file = strjoin("/var/lib/systemd/rfkill/", type, NULL); - - if (!state_file) - return log_oom(); - - *ret = state_file; - return 0; -} - -static int load_state( - int rfkill_fd, - struct udev *udev, - const struct rfkill_event *event) { - - _cleanup_udev_device_unref_ struct udev_device *device = NULL; - _cleanup_free_ char *state_file = NULL, *value = NULL; - struct rfkill_event we; - ssize_t l; - int b, r; - - assert(rfkill_fd >= 0); - assert(udev); - assert(event); - - if (shall_restore_state() == 0) - return 0; - - r = find_device(udev, event, &device); - if (r < 0) - return r; - - r = determine_state_file(udev, event, device, &state_file); - if (r < 0) - return r; - - r = read_one_line_file(state_file, &value); - if (r == -ENOENT) { - /* No state file? Then save the current state */ - - r = write_string_file(state_file, one_zero(event->soft), WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC); - if (r < 0) - return log_error_errno(r, "Failed to write state file %s: %m", state_file); - - log_debug("Saved state '%s' to %s.", one_zero(event->soft), state_file); - return 0; - } - if (r < 0) - return log_error_errno(r, "Failed to read state file %s: %m", state_file); - - b = parse_boolean(value); - if (b < 0) - return log_error_errno(b, "Failed to parse state file %s: %m", state_file); - - we = (struct rfkill_event) { - .op = RFKILL_OP_CHANGE, - .idx = event->idx, - .soft = b, - }; - - l = write(rfkill_fd, &we, sizeof(we)); - if (l < 0) - return log_error_errno(errno, "Failed to restore rfkill state for %i: %m", event->idx); - if (l != sizeof(we)) { - log_error("Couldn't write rfkill event structure, too short."); - return -EIO; - } - - log_debug("Loaded state '%s' from %s.", one_zero(b), state_file); - return 0; -} - -static int save_state( - int rfkill_fd, - struct udev *udev, - const struct rfkill_event *event) { - - _cleanup_udev_device_unref_ struct udev_device *device = NULL; - _cleanup_free_ char *state_file = NULL; - int r; - - assert(rfkill_fd >= 0); - assert(udev); - assert(event); - - r = find_device(udev, event, &device); - if (r < 0) - return r; - - r = determine_state_file(udev, event, device, &state_file); - if (r < 0) - return r; - - r = write_string_file(state_file, one_zero(event->soft), WRITE_STRING_FILE_CREATE|WRITE_STRING_FILE_ATOMIC); - if (r < 0) - return log_error_errno(r, "Failed to write state file %s: %m", state_file); - - log_debug("Saved state '%s' to %s.", one_zero(event->soft), state_file); - return 0; -} - -int main(int argc, char *argv[]) { - _cleanup_udev_unref_ struct udev *udev = NULL; - _cleanup_close_ int rfkill_fd = -1; - bool ready = false; - int r, n; - - if (argc > 1) { - log_error("This program requires no arguments."); - return EXIT_FAILURE; - } - - log_set_target(LOG_TARGET_AUTO); - log_parse_environment(); - log_open(); - - umask(0022); - - udev = udev_new(); - if (!udev) { - r = log_oom(); - goto finish; - } - - r = mkdir_p("/var/lib/systemd/rfkill", 0755); - if (r < 0) { - log_error_errno(r, "Failed to create rfkill directory: %m"); - goto finish; - } - - n = sd_listen_fds(false); - if (n < 0) { - r = log_error_errno(n, "Failed to determine whether we got any file descriptors passed: %m"); - goto finish; - } - if (n > 1) { - log_error("Got too many file descriptors."); - r = -EINVAL; - goto finish; - } - - if (n == 0) { - rfkill_fd = open("/dev/rfkill", O_RDWR|O_CLOEXEC|O_NOCTTY|O_NONBLOCK); - if (rfkill_fd < 0) { - if (errno == ENOENT) { - log_debug_errno(errno, "Missing rfkill subsystem, or no device present, exiting."); - r = 0; - goto finish; - } - - r = log_error_errno(errno, "Failed to open /dev/rfkill: %m"); - goto finish; - } - } else { - rfkill_fd = SD_LISTEN_FDS_START; - - r = fd_nonblock(rfkill_fd, 1); - if (r < 0) { - log_error_errno(r, "Failed to make /dev/rfkill socket non-blocking: %m"); - goto finish; - } - } - - for (;;) { - struct rfkill_event event; - const char *type; - ssize_t l; - - l = read(rfkill_fd, &event, sizeof(event)); - if (l < 0) { - if (errno == EAGAIN) { - - if (!ready) { - /* Notify manager that we are - * now finished with - * processing whatever was - * queued */ - (void) sd_notify(false, "READY=1"); - ready = true; - } - - /* Hang around for a bit, maybe there's more coming */ - - r = fd_wait_for_event(rfkill_fd, POLLIN, EXIT_USEC); - if (r == -EINTR) - continue; - if (r < 0) { - log_error_errno(r, "Failed to poll() on device: %m"); - goto finish; - } - if (r > 0) - continue; - - log_debug("All events read and idle, exiting."); - break; - } - - log_error_errno(errno, "Failed to read from /dev/rfkill: %m"); - } - - if (l != RFKILL_EVENT_SIZE_V1) { - log_error("Read event structure of invalid size."); - r = -EIO; - goto finish; - } - - type = rfkill_type_to_string(event.type); - if (!type) { - log_debug("An rfkill device of unknown type %i discovered, ignoring.", event.type); - continue; - } - - switch (event.op) { - - case RFKILL_OP_ADD: - log_debug("A new rfkill device has been added with index %i and type %s.", event.idx, type); - (void) load_state(rfkill_fd, udev, &event); - break; - - case RFKILL_OP_DEL: - log_debug("An rfkill device has been removed with index %i and type %s", event.idx, type); - break; - - case RFKILL_OP_CHANGE: - log_debug("An rfkill device has changed state with index %i and type %s", event.idx, type); - (void) save_state(rfkill_fd, udev, &event); - break; - - default: - log_debug("Unknown event %i from /dev/rfkill for index %i and type %s, ignoring.", event.op, event.idx, type); - break; - } - } - - r = 0; - -finish: - return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; -} |