diff options
Diffstat (limited to 'src/systemctl/systemctl-list-jobs.c')
| -rw-r--r-- | src/systemctl/systemctl-list-jobs.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/systemctl/systemctl-list-jobs.c b/src/systemctl/systemctl-list-jobs.c new file mode 100644 index 0000000000..64a8d6779c --- /dev/null +++ b/src/systemctl/systemctl-list-jobs.c @@ -0,0 +1,176 @@ +/* SPDX-License-Identifier: LGPL-2.1+ */ + +#include "bus-error.h" +#include "bus-locator.h" +#include "locale-util.h" +#include "systemctl-list-jobs.h" +#include "systemctl-util.h" +#include "systemctl.h" +#include "terminal-util.h" + +static int output_waiting_jobs(sd_bus *bus, Table *table, uint32_t id, const char *method, const char *prefix) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + const char *name, *type; + uint32_t other_id; + int r; + + assert(bus); + + r = bus_call_method(bus, bus_systemd_mgr, method, &error, &reply, "u", id); + if (r < 0) + return log_debug_errno(r, "Failed to get waiting jobs for job %" PRIu32, id); + + r = sd_bus_message_enter_container(reply, 'a', "(usssoo)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(usssoo)", &other_id, &name, &type, NULL, NULL, NULL)) > 0) { + _cleanup_free_ char *row = NULL; + int rc; + + if (asprintf(&row, "%s %u (%s/%s)", prefix, other_id, name, type) < 0) + return log_oom(); + + rc = table_add_many(table, + TABLE_STRING, special_glyph(SPECIAL_GLYPH_TREE_RIGHT), + TABLE_STRING, row, + TABLE_EMPTY, + TABLE_EMPTY); + if (rc < 0) + return table_log_add_error(r); + } + + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + return 0; +} + +struct job_info { + uint32_t id; + const char *name, *type, *state; +}; + +static int output_jobs_list(sd_bus *bus, const struct job_info* jobs, unsigned n, bool skipped) { + _cleanup_(table_unrefp) Table *table = NULL; + const struct job_info *j; + const char *on, *off; + int r; + + assert(n == 0 || jobs); + + if (n == 0) { + if (!arg_no_legend) { + on = ansi_highlight_green(); + off = ansi_normal(); + + printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off); + } + return 0; + } + + (void) pager_open(arg_pager_flags); + + table = table_new("job", "unit", "type", "state"); + if (!table) + return log_oom(); + + table_set_header(table, !arg_no_legend); + if (arg_full) + table_set_width(table, 0); + + (void) table_set_empty_string(table, "-"); + + for (j = jobs; j < jobs + n; j++) { + if (streq(j->state, "running")) + on = ansi_highlight(); + else + on = ""; + + r = table_add_many(table, + TABLE_UINT, j->id, + TABLE_STRING, j->name, + TABLE_SET_COLOR, on, + TABLE_STRING, j->type, + TABLE_STRING, j->state, + TABLE_SET_COLOR, on); + if (r < 0) + return table_log_add_error(r); + + if (arg_jobs_after) + output_waiting_jobs(bus, table, j->id, "GetJobAfter", "\twaiting for job"); + if (arg_jobs_before) + output_waiting_jobs(bus, table, j->id, "GetJobBefore", "\tblocking job"); + } + + r = table_print(table, NULL); + if (r < 0) + return log_error_errno(r, "Failed to print the table: %m"); + + if (!arg_no_legend) { + on = ansi_highlight(); + off = ansi_normal(); + + printf("\n%s%u jobs listed%s.\n", on, n, off); + } + + return 0; +} + +static bool output_show_job(struct job_info *job, char **patterns) { + return strv_fnmatch_or_empty(patterns, job->name, FNM_NOESCAPE); +} + +int list_jobs(int argc, char *argv[], void *userdata) { + _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; + _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL; + _cleanup_free_ struct job_info *jobs = NULL; + const char *name, *type, *state; + bool skipped = false; + size_t size = 0; + unsigned c = 0; + sd_bus *bus; + uint32_t id; + int r; + + r = acquire_bus(BUS_MANAGER, &bus); + if (r < 0) + return r; + + r = bus_call_method(bus, bus_systemd_mgr, "ListJobs", &error, &reply, NULL); + if (r < 0) + return log_error_errno(r, "Failed to list jobs: %s", bus_error_message(&error, r)); + + r = sd_bus_message_enter_container(reply, 'a', "(usssoo)"); + if (r < 0) + return bus_log_parse_error(r); + + while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, NULL, NULL)) > 0) { + struct job_info job = { id, name, type, state }; + + if (!output_show_job(&job, strv_skip(argv, 1))) { + skipped = true; + continue; + } + + if (!GREEDY_REALLOC(jobs, size, c + 1)) + return log_oom(); + + jobs[c++] = job; + } + if (r < 0) + return bus_log_parse_error(r); + + r = sd_bus_message_exit_container(reply); + if (r < 0) + return bus_log_parse_error(r); + + (void) pager_open(arg_pager_flags); + + return output_jobs_list(bus, jobs, c, skipped); +} |