diff options
Diffstat (limited to 'src/fsckd/fsckd.c')
| -rw-r--r-- | src/fsckd/fsckd.c | 146 |
1 files changed, 145 insertions, 1 deletions
diff --git a/src/fsckd/fsckd.c b/src/fsckd/fsckd.c index 6b2eeb067f..dc00fc6b30 100644 --- a/src/fsckd/fsckd.c +++ b/src/fsckd/fsckd.c @@ -34,6 +34,7 @@ #include <unistd.h> #include "build.h" +#include "def.h" #include "event-util.h" #include "fsckd.h" #include "log.h" @@ -44,6 +45,7 @@ #include "util.h" #define IDLE_TIME_SECONDS 30 +#define PLYMOUTH_REQUEST_KEY "K\2\2\3" struct Manager; @@ -56,6 +58,7 @@ typedef struct Client { int pass; double percent; size_t buflen; + bool cancelled; LIST_FIELDS(struct Client, clients); } Client; @@ -68,8 +71,13 @@ typedef struct Manager { FILE *console; double percent; int numdevices; + int plymouth_fd; + bool plymouth_cancel_sent; + bool cancel_requested; } Manager; +static int connect_plymouth(Manager *m); +static int update_global_progress(Manager *m); static void manager_free(Manager *m); DEFINE_TRIVIAL_CLEANUP_FUNC(Manager*, manager_free); #define _cleanup_manager_free_ _cleanup_(manager_freep) @@ -92,6 +100,19 @@ static double compute_percent(int pass, size_t cur, size_t max) { (double) cur / max; } +static int request_cancel_client(Client *current) { + FsckdMessage cancel_msg; + ssize_t n; + cancel_msg.cancel = 1; + + n = send(current->fd, &cancel_msg, sizeof(FsckdMessage), 0); + if (n < 0 || (size_t) n < sizeof(FsckdMessage)) + return log_warning_errno(n, "Cannot send cancel to fsck on (%u, %u): %m", + major(current->devnum), minor(current->devnum)); + else + current->cancelled = true; + return 0; +} static void remove_client(Client **first, Client *item) { LIST_REMOVE(clients, *first, item); @@ -99,10 +120,91 @@ static void remove_client(Client **first, Client *item) { free(item); } +static void on_plymouth_disconnect(Manager *m) { + safe_close(m->plymouth_fd); + m->plymouth_fd = -1; + m->plymouth_cancel_sent = false; +} + +static int plymouth_feedback_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { + Manager *m = userdata; + Client *current; + char buffer[6]; + int r; + + assert(m); + + r = read(m->plymouth_fd, buffer, sizeof(buffer)); + if (r <= 0) + on_plymouth_disconnect(m); + else { + if (buffer[0] == '\15') + log_error("Message update to plymouth wasn't delivered successfully"); + + /* the only answer support type we requested is a key interruption */ + if (buffer[0] == '\2' && buffer[5] == '\3') { + m->cancel_requested = true; + /* cancel all connected clients */ + LIST_FOREACH(clients, current, m->clients) + request_cancel_client(current); + } + } + + return 0; +} + +static int send_message_plymouth_socket(int plymouth_fd, const char *message, bool update) { + _cleanup_free_ char *packet = NULL; + int r, n; + char mode = 'M'; + + if (update) + mode = 'U'; + + if (asprintf(&packet, "%c\002%c%s%n", mode, (int) (strlen(message) + 1), message, &n) < 0) + return log_oom(); + r = loop_write(plymouth_fd, packet, n + 1, true); + return r; +} + + +static int send_message_plymouth(Manager *m, const char *message) { + int r; + const char *plymouth_cancel_message = NULL; + + r = connect_plymouth(m); + if (r < 0) + return r; + + if (!m->plymouth_cancel_sent) { + /* indicate to plymouth that we listen to Ctrl+C */ + r = loop_write(m->plymouth_fd, PLYMOUTH_REQUEST_KEY, sizeof(PLYMOUTH_REQUEST_KEY), true); + if (r < 0) + return log_warning_errno(errno, "Can't send to plymouth cancel key: %m"); + m->plymouth_cancel_sent = true; + plymouth_cancel_message = strjoina("fsckd-cancel-msg:", "Press Ctrl+C to cancel all filesystem checks in progress"); + r = send_message_plymouth_socket(m->plymouth_fd, plymouth_cancel_message, false); + if (r < 0) + log_warning_errno(r, "Can't send filesystem cancel message to plymouth: %m"); + } else if (m->numdevices == 0) { + m->plymouth_cancel_sent = false; + r = send_message_plymouth_socket(m->plymouth_fd, "", false); + if (r < 0) + log_warning_errno(r, "Can't clear plymouth filesystem cancel message: %m"); + } + + r = send_message_plymouth_socket(m->plymouth_fd, message, true); + if (r < 0) + return log_warning_errno(errno, "Couldn't send \"%s\" to plymouth: %m", message); + + return 0; +} + static int update_global_progress(Manager *m) { Client *current = NULL; _cleanup_free_ char *console_message = NULL; - int current_numdevices = 0, l = 0; + _cleanup_free_ char *fsck_message = NULL; + int current_numdevices = 0, l = 0, r; double current_percent = 100; /* get the overall percentage */ @@ -123,6 +225,8 @@ static int update_global_progress(Manager *m) { if (asprintf(&console_message, "Checking in progress on %d disks (%3.1f%% complete)", m->numdevices, m->percent) < 0) return -ENOMEM; + if (asprintf(&fsck_message, "fsckd:%d:%3.1f:%s", m->numdevices, m->percent, console_message) < 0) + return -ENOMEM; /* write to console */ if (m->console) { @@ -130,12 +234,41 @@ static int update_global_progress(Manager *m) { fflush(m->console); } + /* try to connect to plymouth and send message */ + r = send_message_plymouth(m, fsck_message); + if (r < 0) + log_debug("Couldn't send message to plymouth"); + if (l > m->clear) m->clear = l; } return 0; } +static int connect_plymouth(Manager *m) { + union sockaddr_union sa = PLYMOUTH_SOCKET; + int r; + + /* try to connect or reconnect if sending a message */ + if (m->plymouth_fd <= 0) { + m->plymouth_fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC, 0); + if (m->plymouth_fd < 0) { + return log_warning_errno(errno, "Connection to plymouth socket failed: %m"); + } + if (connect(m->plymouth_fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { + on_plymouth_disconnect(m); + return log_warning_errno(errno, "Couldn't connect to plymouth: %m"); + } + r = sd_event_add_io(m->event, NULL, m->plymouth_fd, EPOLLIN, plymouth_feedback_handler, m); + if (r < 0) { + on_plymouth_disconnect(m); + return log_warning_errno(r, "Can't listen to plymouth socket: %m"); + } + } + + return 0; +} + static int progress_handler(sd_event_source *s, int fd, uint32_t revents, void *userdata) { Client *client = userdata; Manager *m = NULL; @@ -146,6 +279,12 @@ static int progress_handler(sd_event_source *s, int fd, uint32_t revents, void * assert(client); m = client->manager; + /* check first if we need to cancel this client */ + if (m->cancel_requested) { + if (!client->cancelled) + request_cancel_client(client); + } + /* ensure we have enough data to read */ r = ioctl(fd, FIONREAD, &buflen); if (r == 0 && buflen != 0 && (size_t) buflen < sizeof(FsckProgress)) { @@ -210,6 +349,9 @@ static int new_connection_handler(sd_event_source *s, int fd, uint32_t revents, remove_client(&(m->clients), client); return r; } + /* only request the client to cancel now in case the request is dropped by the client (chance to recancel) */ + if (m->cancel_requested) + request_cancel_client(client); } else return log_error_errno(errno, "Couldn't accept a new connection: %m"); @@ -233,6 +375,7 @@ static void manager_free(Manager *m) { } safe_close(m->connection_fd); + safe_close(m->plymouth_fd); if (m->console) fclose(m->console); @@ -266,6 +409,7 @@ static int manager_new(Manager **ret, int fd) { } m->percent = 100; + m->plymouth_fd = -1; *ret = m; m = NULL; |