/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2010 Lennart Poettering Copyright 2012 Holger Hans Peter Freyther 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 . ***/ #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_SECCOMP #include #endif #include "sd-messages.h" #include "unit.h" #include "strv.h" #include "conf-parser.h" #include "load-fragment.h" #include "log.h" #include "ioprio.h" #include "securebits.h" #include "missing.h" #include "unit-name.h" #include "unit-printf.h" #include "utf8.h" #include "path-util.h" #include "env-util.h" #include "cgroup.h" #include "bus-util.h" #include "bus-error.h" #include "errno-list.h" #ifdef HAVE_SECCOMP #include "seccomp-util.h" #endif #if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_LIBWRAP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK) || !defined(HAVE_APPARMOR) int config_parse_warn_compat( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { log_syntax(unit, LOG_DEBUG, filename, line, EINVAL, "Support for option %s= has been disabled at compile time and is ignored", lvalue); return 0; } #endif int config_parse_unit_deps(const char* unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { UnitDependency d = ltype; Unit *u = userdata; char *w; size_t l; char *state; assert(filename); assert(lvalue); assert(rvalue); FOREACH_WORD_QUOTED(w, l, rvalue, state) { _cleanup_free_ char *t = NULL, *k = NULL; int r; t = strndup(w, l); if (!t) return log_oom(); r = unit_name_printf(u, t, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", strerror(-r)); continue; } r = unit_add_dependency_by_name(u, d, k, NULL, true); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to add dependency on %s, ignoring: %s", k, strerror(-r)); } return 0; } int config_parse_unit_string_printf(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = userdata; _cleanup_free_ char *k = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); r = unit_full_printf(u, rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r)); return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k ? k : rvalue, data, userdata); } int config_parse_unit_strv_printf(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = userdata; _cleanup_free_ char *k = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); r = unit_full_printf(u, rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r)); return config_parse_strv(unit, filename, line, section, section_line, lvalue, ltype, k ? k : rvalue, data, userdata); } int config_parse_unit_path_printf(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = userdata; _cleanup_free_ char *k = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); r = unit_full_printf(u, rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r)); return config_parse_path(unit, filename, line, section, section_line, lvalue, ltype, k ? k : rvalue, data, userdata); } int config_parse_socket_listen(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { SocketPort *p, *tail; Socket *s; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); s = SOCKET(data); if (isempty(rvalue)) { /* An empty assignment removes all ports */ socket_free_ports(s); return 0; } p = new0(SocketPort, 1); if (!p) return log_oom(); if (ltype != SOCKET_SOCKET) { p->type = ltype; r = unit_full_printf(UNIT(s), rvalue, &p->path); if (r < 0) { p->path = strdup(rvalue); if (!p->path) { free(p); return log_oom(); } else log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r)); } path_kill_slashes(p->path); } else if (streq(lvalue, "ListenNetlink")) { _cleanup_free_ char *k = NULL; p->type = SOCKET_SOCKET; r = unit_full_printf(UNIT(s), rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r)); r = socket_address_parse_netlink(&p->address, k ? k : rvalue); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse address value, ignoring: %s", rvalue); free(p); return 0; } } else { _cleanup_free_ char *k = NULL; p->type = SOCKET_SOCKET; r = unit_full_printf(UNIT(s), rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s, ignoring: %s", rvalue, strerror(-r)); r = socket_address_parse(&p->address, k ? k : rvalue); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse address value, ignoring: %s", rvalue); free(p); return 0; } if (streq(lvalue, "ListenStream")) p->address.type = SOCK_STREAM; else if (streq(lvalue, "ListenDatagram")) p->address.type = SOCK_DGRAM; else { assert(streq(lvalue, "ListenSequentialPacket")); p->address.type = SOCK_SEQPACKET; } if (socket_address_family(&p->address) != AF_LOCAL && p->address.type == SOCK_SEQPACKET) { log_syntax(unit, LOG_ERR, filename, line, ENOTSUP, "Address family not supported, ignoring: %s", rvalue); free(p); return 0; } } p->fd = -1; p->socket = s; if (s->ports) { LIST_FIND_TAIL(port, s->ports, tail); LIST_INSERT_AFTER(port, s->ports, tail, p); } else LIST_PREPEND(port, s->ports, p); return 0; } int config_parse_socket_bind(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Socket *s; SocketAddressBindIPv6Only b; assert(filename); assert(lvalue); assert(rvalue); assert(data); s = SOCKET(data); b = socket_address_bind_ipv6_only_from_string(rvalue); if (b < 0) { int r; r = parse_boolean(rvalue); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse bind IPv6 only value, ignoring: %s", rvalue); return 0; } s->bind_ipv6_only = r ? SOCKET_ADDRESS_IPV6_ONLY : SOCKET_ADDRESS_BOTH; } else s->bind_ipv6_only = b; return 0; } int config_parse_exec_nice(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int priority, r; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = safe_atoi(rvalue, &priority); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse nice priority, ignoring: %s. ", rvalue); return 0; } if (priority < PRIO_MIN || priority >= PRIO_MAX) { log_syntax(unit, LOG_ERR, filename, line, ERANGE, "Nice priority out of range, ignoring: %s", rvalue); return 0; } c->nice = priority; c->nice_set = true; return 0; } int config_parse_exec_oom_score_adjust(const char* unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int oa, r; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = safe_atoi(rvalue, &oa); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse the OOM score adjust value, ignoring: %s", rvalue); return 0; } if (oa < OOM_SCORE_ADJ_MIN || oa > OOM_SCORE_ADJ_MAX) { log_syntax(unit, LOG_ERR, filename, line, ERANGE, "OOM score adjust value out of range, ignoring: %s", rvalue); return 0; } c->oom_score_adjust = oa; c->oom_score_adjust_set = true; return 0; } int config_parse_exec(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecCommand **e = data, *nce; char *path, **n; unsigned k; int r; assert(filename); assert(lvalue); assert(rvalue); assert(e); e += ltype; if (isempty(rvalue)) { /* An empty assignment resets the list */ exec_command_free_list(*e); *e = NULL; return 0; } /* We accept an absolute path as first argument, or * alternatively an absolute prefixed with @ to allow * overriding of argv[0]. */ for (;;) { int i; char *w; size_t l; char *state; bool honour_argv0 = false, ignore = false; path = NULL; nce = NULL; n = NULL; rvalue += strspn(rvalue, WHITESPACE); if (rvalue[0] == 0) break; for (i = 0; i < 2; i++) { if (rvalue[0] == '-' && !ignore) { ignore = true; rvalue ++; } if (rvalue[0] == '@' && !honour_argv0) { honour_argv0 = true; rvalue ++; } } if (*rvalue != '/') { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Executable path is not absolute, ignoring: %s", rvalue); return 0; } k = 0; FOREACH_WORD_QUOTED(w, l, rvalue, state) { if (strneq(w, ";", MAX(l, 1U))) break; k++; } n = new(char*, k + !honour_argv0); if (!n) return log_oom(); k = 0; FOREACH_WORD_QUOTED(w, l, rvalue, state) { if (strneq(w, ";", MAX(l, 1U))) break; else if (strneq(w, "\\;", MAX(l, 1U))) w ++; if (honour_argv0 && w == rvalue) { assert(!path); path = strndup(w, l); if (!path) { r = log_oom(); goto fail; } if (!utf8_is_valid(path)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path is not UTF-8 clean, ignoring assignment: %s", rvalue); r = 0; goto fail; } } else { char *c; c = n[k++] = cunescape_length(w, l); if (!c) { r = log_oom(); goto fail; } if (!utf8_is_valid(c)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path is not UTF-8 clean, ignoring assignment: %s", rvalue); r = 0; goto fail; } } } n[k] = NULL; if (!n[0]) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid command line, ignoring: %s", rvalue); r = 0; goto fail; } if (!path) { path = strdup(n[0]); if (!path) { r = log_oom(); goto fail; } } assert(path_is_absolute(path)); nce = new0(ExecCommand, 1); if (!nce) { r = log_oom(); goto fail; } nce->argv = n; nce->path = path; nce->ignore = ignore; path_kill_slashes(nce->path); exec_command_append_list(e, nce); rvalue = state; } return 0; fail: n[k] = NULL; strv_free(n); free(path); free(nce); return r; } DEFINE_CONFIG_PARSE_ENUM(config_parse_service_type, service_type, ServiceType, "Failed to parse service type"); DEFINE_CONFIG_PARSE_ENUM(config_parse_service_restart, service_restart, ServiceRestart, "Failed to parse service restart specifier"); int config_parse_socket_bindtodevice(const char* unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Socket *s = data; char *n; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (rvalue[0] && !streq(rvalue, "*")) { n = strdup(rvalue); if (!n) return log_oom(); } else n = NULL; free(s->bind_to_device); s->bind_to_device = n; return 0; } DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output specifier"); DEFINE_CONFIG_PARSE_ENUM(config_parse_input, exec_input, ExecInput, "Failed to parse input specifier"); int config_parse_exec_io_class(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int x; assert(filename); assert(lvalue); assert(rvalue); assert(data); x = ioprio_class_from_string(rvalue); if (x < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse IO scheduling class, ignoring: %s", rvalue); return 0; } c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio)); c->ioprio_set = true; return 0; } int config_parse_exec_io_priority(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int i, r; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = safe_atoi(rvalue, &i); if (r < 0 || i < 0 || i >= IOPRIO_BE_NR) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse IO priority, ignoring: %s", rvalue); return 0; } c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i); c->ioprio_set = true; return 0; } int config_parse_exec_cpu_sched_policy(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int x; assert(filename); assert(lvalue); assert(rvalue); assert(data); x = sched_policy_from_string(rvalue); if (x < 0) { log_syntax(unit, LOG_ERR, filename, line, -x, "Failed to parse CPU scheduling policy, ignoring: %s", rvalue); return 0; } c->cpu_sched_policy = x; /* Moving to or from real-time policy? We need to adjust the priority */ c->cpu_sched_priority = CLAMP(c->cpu_sched_priority, sched_get_priority_min(x), sched_get_priority_max(x)); c->cpu_sched_set = true; return 0; } int config_parse_exec_cpu_sched_prio(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int i, min, max, r; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = safe_atoi(rvalue, &i); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse CPU scheduling policy, ignoring: %s", rvalue); return 0; } /* On Linux RR/FIFO range from 1 to 99 and OTHER/BATCH may only be 0 */ min = sched_get_priority_min(c->cpu_sched_policy); max = sched_get_priority_max(c->cpu_sched_policy); if (i < min || i > max) { log_syntax(unit, LOG_ERR, filename, line, ERANGE, "CPU scheduling priority is out of range, ignoring: %s", rvalue); return 0; } c->cpu_sched_priority = i; c->cpu_sched_set = true; return 0; } int config_parse_exec_cpu_affinity(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; char *w; size_t l; char *state; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* An empty assignment resets the CPU list */ if (c->cpuset) CPU_FREE(c->cpuset); c->cpuset = NULL; return 0; } FOREACH_WORD_QUOTED(w, l, rvalue, state) { _cleanup_free_ char *t = NULL; int r; unsigned cpu; t = strndup(w, l); if (!t) return log_oom(); r = safe_atou(t, &cpu); if (!c->cpuset) { c->cpuset = cpu_set_malloc(&c->cpuset_ncpus); if (!c->cpuset) return log_oom(); } if (r < 0 || cpu >= c->cpuset_ncpus) { log_syntax(unit, LOG_ERR, filename, line, ERANGE, "Failed to parse CPU affinity '%s', ignoring: %s", t, rvalue); return 0; } CPU_SET_S(cpu, CPU_ALLOC_SIZE(c->cpuset_ncpus), c->cpuset); } return 0; } int config_parse_exec_capabilities(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; cap_t cap; assert(filename); assert(lvalue); assert(rvalue); assert(data); cap = cap_from_text(rvalue); if (!cap) { log_syntax(unit, LOG_ERR, filename, line, errno, "Failed to parse capabilities, ignoring: %s", rvalue); return 0; } if (c->capabilities) cap_free(c->capabilities); c->capabilities = cap; return 0; } int config_parse_exec_secure_bits(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; char *w; size_t l; char *state; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* An empty assignment resets the field */ c->secure_bits = 0; return 0; } FOREACH_WORD_QUOTED(w, l, rvalue, state) { if (first_word(w, "keep-caps")) c->secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<rlim_cur = (*rl)->rlim_max = (rlim_t) u; return 0; } #ifdef HAVE_SYSV_COMPAT int config_parse_sysv_priority(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { int *priority = data; int i, r; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = safe_atoi(rvalue, &i); if (r < 0 || i < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse SysV start priority, ignoring: %s", rvalue); return 0; } *priority = (int) i; return 0; } #endif DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode"); int config_parse_kill_signal(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { int *sig = data; int r; assert(filename); assert(lvalue); assert(rvalue); assert(sig); r = signal_from_string_try_harder(rvalue); if (r <= 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to parse kill signal, ignoring: %s", rvalue); return 0; } *sig = r; return 0; } int config_parse_exec_mount_flags(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; char *w; size_t l; char *state; unsigned long flags = 0; assert(filename); assert(lvalue); assert(rvalue); assert(data); FOREACH_WORD_SEPARATOR(w, l, rvalue, ", ", state) { _cleanup_free_ char *t; t = strndup(w, l); if (!t) return log_oom(); if (streq(t, "shared")) flags |= MS_SHARED; else if (streq(t, "slave")) flags |= MS_SLAVE; else if (streq(w, "private")) flags |= MS_PRIVATE; else { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse mount flag %s, ignoring: %s", t, rvalue); return 0; } } c->mount_flags = flags; return 0; } int config_parse_exec_selinux_context( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; Unit *u = userdata; bool ignore; char *k; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { free(c->selinux_context); c->selinux_context = NULL; c->selinux_context_ignore = false; return 0; } if (rvalue[0] == '-') { ignore = true; rvalue++; } else ignore = false; r = unit_name_printf(u, rvalue, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", strerror(-r)); return 0; } free(c->selinux_context); c->selinux_context = k; c->selinux_context_ignore = ignore; return 0; } int config_parse_exec_apparmor_profile( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; Unit *u = userdata; bool ignore; char *k; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { free(c->apparmor_profile); c->apparmor_profile = NULL; c->apparmor_profile_ignore = false; return 0; } if (rvalue[0] == '-') { ignore = true; rvalue++; } else ignore = false; r = unit_name_printf(u, rvalue, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", strerror(-r)); return 0; } free(c->apparmor_profile); c->apparmor_profile = k; c->apparmor_profile_ignore = ignore; return 0; } int config_parse_timer(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Timer *t = data; usec_t u = 0; TimerValue *v; TimerBase b; CalendarSpec *c = NULL; clockid_t id; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets list */ timer_free_values(t); return 0; } b = timer_base_from_string(lvalue); if (b < 0) { log_syntax(unit, LOG_ERR, filename, line, -b, "Failed to parse timer base, ignoring: %s", lvalue); return 0; } if (b == TIMER_CALENDAR) { if (calendar_spec_from_string(rvalue, &c) < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse calendar specification, ignoring: %s", rvalue); return 0; } id = CLOCK_REALTIME; } else { if (parse_sec(rvalue, &u) < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse timer value, ignoring: %s", rvalue); return 0; } id = CLOCK_MONOTONIC; } v = new0(TimerValue, 1); if (!v) return log_oom(); v->base = b; v->clock_id = id; v->value = u; v->calendar_spec = c; LIST_PREPEND(value, t->values, v); return 0; } int config_parse_trigger_unit( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_free_ char *p = NULL; Unit *u = data; UnitType type; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (!set_isempty(u->dependencies[UNIT_TRIGGERS])) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Multiple units to trigger specified, ignoring: %s", rvalue); return 0; } r = unit_name_printf(u, rvalue, &p); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", strerror(-r)); type = unit_name_to_type(p ?: rvalue); if (type < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Unit type not valid, ignoring: %s", rvalue); return 0; } if (type == u->type) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Trigger cannot be of same type, ignoring: %s", rvalue); return 0; } r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_TRIGGERS, p ?: rvalue, NULL, true); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to add trigger on %s, ignoring: %s", p ?: rvalue, strerror(-r)); return 0; } return 0; } int config_parse_path_spec(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Path *p = data; PathSpec *s; PathType b; _cleanup_free_ char *k = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment clears list */ path_free_specs(p); return 0; } b = path_type_from_string(lvalue); if (b < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse path type, ignoring: %s", lvalue); return 0; } r = unit_full_printf(UNIT(p), rvalue, &k); if (r < 0) { k = strdup(rvalue); if (!k) return log_oom(); else log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s. Ignoring.", rvalue); } if (!path_is_absolute(k)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path is not absolute, ignoring: %s", k); return 0; } s = new0(PathSpec, 1); if (!s) return log_oom(); s->unit = UNIT(p); s->path = path_kill_slashes(k); k = NULL; s->type = b; s->inotify_fd = -1; LIST_PREPEND(spec, p->specs, s); return 0; } int config_parse_socket_service(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; Socket *s = data; int r; Unit *x; _cleanup_free_ char *p = NULL; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = unit_name_printf(UNIT(s), rvalue, &p); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", rvalue); return 0; } if (!endswith(p, ".service")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Unit must be of type service, ignoring: %s", rvalue); return 0; } r = manager_load_unit(UNIT(s)->manager, p, NULL, &error, &x); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to load unit %s, ignoring: %s", rvalue, bus_error_message(&error, r)); return 0; } unit_ref_set(&s->service, x); return 0; } int config_parse_service_sockets(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Service *s = data; int r; char *state, *w; size_t l; assert(filename); assert(lvalue); assert(rvalue); assert(data); FOREACH_WORD_QUOTED(w, l, rvalue, state) { _cleanup_free_ char *t = NULL, *k = NULL; t = strndup(w, l); if (!t) return log_oom(); r = unit_name_printf(UNIT(s), t, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", strerror(-r)); if (!endswith(k ?: t, ".socket")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Unit must be of type socket, ignoring: %s", k ?: t); continue; } r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k ?: t, NULL, true); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to add dependency on %s, ignoring: %s", k ?: t, strerror(-r)); r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k ?: t, NULL, true); if (r < 0) return r; } return 0; } int config_parse_service_timeout(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Service *s = userdata; int r; assert(filename); assert(lvalue); assert(rvalue); assert(s); r = config_parse_sec(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata); if (r < 0) return r; if (streq(lvalue, "TimeoutSec")) { s->start_timeout_defined = true; s->timeout_stop_usec = s->timeout_start_usec; } else if (streq(lvalue, "TimeoutStartSec")) s->start_timeout_defined = true; return 0; } int config_parse_busname_service( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL; BusName *n = data; int r; Unit *x; _cleanup_free_ char *p = NULL; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = unit_name_printf(UNIT(n), rvalue, &p); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", rvalue); return 0; } if (!endswith(p, ".service")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Unit must be of type service, ignoring: %s", rvalue); return 0; } r = manager_load_unit(UNIT(n)->manager, p, NULL, &error, &x); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to load unit %s, ignoring: %s", rvalue, bus_error_message(&error, r)); return 0; } unit_ref_set(&n->service, x); return 0; } int config_parse_unit_env_file(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { char ***env = data; Unit *u = userdata; _cleanup_free_ char *n = NULL; const char *s; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment frees the list */ strv_free(*env); *env = NULL; return 0; } r = unit_full_printf(u, rvalue, &n); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve specifiers, ignoring: %s", rvalue); s = n ?: rvalue; if (!path_is_absolute(s[0] == '-' ? s + 1 : s)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path '%s' is not absolute, ignoring.", s); return 0; } r = strv_extend(env, s); if (r < 0) return log_oom(); return 0; } int config_parse_environ(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = userdata; char*** env = data, *w, *state; size_t l; _cleanup_free_ char *k = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ strv_free(*env); *env = NULL; return 0; } if (u) { r = unit_full_printf(u, rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", rvalue); } if (!k) k = strdup(rvalue); if (!k) return log_oom(); FOREACH_WORD_QUOTED(w, l, k, state) { _cleanup_free_ char *n; char **x; n = cunescape_length(w, l); if (!n) return log_oom(); if (!env_assignment_is_valid(n)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid environment assignment, ignoring: %s", rvalue); continue; } x = strv_env_set(*env, n); if (!x) return log_oom(); strv_free(*env); *env = x; } return 0; } int config_parse_ip_tos(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { int *ip_tos = data, x; assert(filename); assert(lvalue); assert(rvalue); assert(data); x = ip_tos_from_string(rvalue); if (x < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse IP TOS value, ignoring: %s", rvalue); return 0; } *ip_tos = x; return 0; } int config_parse_unit_condition_path(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ConditionType cond = ltype; Unit *u = data; bool trigger, negate; Condition *c; _cleanup_free_ char *p = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ condition_free_list(u->conditions); u->conditions = NULL; return 0; } trigger = rvalue[0] == '|'; if (trigger) rvalue++; negate = rvalue[0] == '!'; if (negate) rvalue++; r = unit_full_printf(u, rvalue, &p); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", rvalue); if (!p) { p = strdup(rvalue); if (!p) return log_oom(); } if (!path_is_absolute(p)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path in condition not absolute, ignoring: %s", p); return 0; } c = condition_new(cond, p, trigger, negate); if (!c) return log_oom(); LIST_PREPEND(conditions, u->conditions, c); return 0; } int config_parse_unit_condition_string(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ConditionType cond = ltype; Unit *u = data; bool trigger, negate; Condition *c; _cleanup_free_ char *s = NULL; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ condition_free_list(u->conditions); u->conditions = NULL; return 0; } trigger = rvalue[0] == '|'; if (trigger) rvalue++; negate = rvalue[0] == '!'; if (negate) rvalue++; r = unit_full_printf(u, rvalue, &s); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve specifiers, ignoring: %s", rvalue); if (!s) { s = strdup(rvalue); if (!s) return log_oom(); } c = condition_new(cond, s, trigger, negate); if (!c) return log_oom(); LIST_PREPEND(conditions, u->conditions, c); return 0; } int config_parse_unit_condition_null(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = data; Condition *c; bool trigger, negate; int b; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ condition_free_list(u->conditions); u->conditions = NULL; return 0; } trigger = rvalue[0] == '|'; if (trigger) rvalue++; negate = rvalue[0] == '!'; if (negate) rvalue++; b = parse_boolean(rvalue); if (b < 0) { log_syntax(unit, LOG_ERR, filename, line, -b, "Failed to parse boolean value in condition, ignoring: %s", rvalue); return 0; } if (!b) negate = !negate; c = condition_new(CONDITION_NULL, NULL, trigger, negate); if (!c) return log_oom(); LIST_PREPEND(conditions, u->conditions, c); return 0; } DEFINE_CONFIG_PARSE_ENUM(config_parse_notify_access, notify_access, NotifyAccess, "Failed to parse notify access specifier"); DEFINE_CONFIG_PARSE_ENUM(config_parse_start_limit_action, start_limit_action, StartLimitAction, "Failed to parse start limit action specifier"); int config_parse_unit_requires_mounts_for( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = userdata; char *state; size_t l; char *w; assert(filename); assert(lvalue); assert(rvalue); assert(data); FOREACH_WORD_QUOTED(w, l, rvalue, state) { int r; _cleanup_free_ char *n; n = strndup(w, l); if (!n) return log_oom(); if (!utf8_is_valid(n)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Path is not UTF-8 clean, ignoring assignment: %s", rvalue); continue; } r = unit_require_mounts_for(u, n); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add required mount for, ignoring: %s", rvalue); continue; } } return 0; } int config_parse_documentation(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Unit *u = userdata; int r; char **a, **b; assert(filename); assert(lvalue); assert(rvalue); assert(u); if (isempty(rvalue)) { /* Empty assignment resets the list */ strv_free(u->documentation); u->documentation = NULL; return 0; } r = config_parse_unit_strv_printf(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata); if (r < 0) return r; for (a = b = u->documentation; a && *a; a++) { if (is_valid_documentation_url(*a)) *(b++) = *a; else { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid URL, ignoring: %s", *a); free(*a); } } if (b) *b = NULL; return r; } #ifdef HAVE_SECCOMP int config_parse_syscall_filter( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { static const char default_syscalls[] = "execve\0" "exit\0" "exit_group\0" "rt_sigreturn\0" "sigreturn\0"; ExecContext *c = data; Unit *u = userdata; bool invert = false; char *w, *state; size_t l; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); if (isempty(rvalue)) { /* Empty assignment resets the list */ set_free(c->syscall_filter); c->syscall_filter = NULL; c->syscall_whitelist = false; return 0; } if (rvalue[0] == '~') { invert = true; rvalue++; } if (!c->syscall_filter) { c->syscall_filter = set_new(trivial_hash_func, trivial_compare_func); if (!c->syscall_filter) return log_oom(); if (invert) /* Allow everything but the ones listed */ c->syscall_whitelist = false; else { const char *i; /* Allow nothing but the ones listed */ c->syscall_whitelist = true; /* Accept default syscalls if we are on a whitelist */ NULSTR_FOREACH(i, default_syscalls) { int id; id = seccomp_syscall_resolve_name(i); if (id < 0) continue; r = set_put(c->syscall_filter, INT_TO_PTR(id + 1)); if (r == -EEXIST) continue; if (r < 0) return log_oom(); } } } FOREACH_WORD_QUOTED(w, l, rvalue, state) { _cleanup_free_ char *t = NULL; int id; t = strndup(w, l); if (!t) return log_oom(); id = seccomp_syscall_resolve_name(t); if (id < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse system call, ignoring: %s", t); continue; } /* If we previously wanted to forbid a syscall and now * we want to allow it, then remove it from the list */ if (!invert == c->syscall_whitelist) { r = set_put(c->syscall_filter, INT_TO_PTR(id + 1)); if (r == -EEXIST) continue; if (r < 0) return log_oom(); } else set_remove(c->syscall_filter, INT_TO_PTR(id + 1)); } c->no_new_privileges = true; return 0; } int config_parse_syscall_archs( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { Set **archs = data; char *w, *state; size_t l; int r; if (isempty(rvalue)) { set_free(*archs); *archs = NULL; return 0; } r = set_ensure_allocated(archs, trivial_hash_func, trivial_compare_func); if (r < 0) return log_oom(); FOREACH_WORD_QUOTED(w, l, rvalue, state) { _cleanup_free_ char *t = NULL; uint32_t a; t = strndup(w, l); if (!t) return log_oom(); r = seccomp_arch_from_string(t, &a); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse system call architecture, ignoring: %s", t); continue; } r = set_put(*archs, UINT32_TO_PTR(a + 1)); if (r == -EEXIST) continue; if (r < 0) return log_oom(); } return 0; } int config_parse_syscall_errno( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { ExecContext *c = data; int e; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { /* Empty assignment resets to KILL */ c->syscall_errno = 0; return 0; } e = errno_from_name(rvalue); if (e < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse error number, ignoring: %s", rvalue); return 0; } c->syscall_errno = e; return 0; } #endif int config_parse_unit_slice( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_free_ char *k = NULL; Unit *u = userdata, *slice; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); r = unit_name_printf(u, rvalue, &k); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to resolve unit specifiers on %s. Ignoring.", rvalue); if (!k) { k = strdup(rvalue); if (!k) return log_oom(); } r = manager_load_unit(u->manager, k, NULL, NULL, &slice); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, -r, "Failed to load slice unit %s. Ignoring.", k); return 0; } if (slice->type != UNIT_SLICE) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Slice unit %s is not a slice. Ignoring.", k); return 0; } unit_ref_set(&u->slice, slice); return 0; } DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy, "Failed to parse device policy"); int config_parse_cpu_shares( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { CGroupContext *c = data; unsigned long lu; int r; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { c->cpu_shares = 1024; return 0; } r = safe_atolu(rvalue, &lu); if (r < 0 || lu <= 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "CPU shares '%s' invalid. Ignoring.", rvalue); return 0; } c->cpu_shares = lu; return 0; } int config_parse_memory_limit( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { CGroupContext *c = data; off_t bytes; int r; if (isempty(rvalue)) { c->memory_limit = (uint64_t) -1; return 0; } assert_cc(sizeof(uint64_t) == sizeof(off_t)); r = parse_bytes(rvalue, &bytes); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Memory limit '%s' invalid. Ignoring.", rvalue); return 0; } c->memory_limit = (uint64_t) bytes; return 0; } int config_parse_device_allow( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_free_ char *path = NULL; CGroupContext *c = data; CGroupDeviceAllow *a; const char *m; size_t n; if (isempty(rvalue)) { while (c->device_allow) cgroup_context_free_device_allow(c, c->device_allow); return 0; } n = strcspn(rvalue, WHITESPACE); path = strndup(rvalue, n); if (!path) return log_oom(); if (!startswith(path, "/dev/") && !startswith(path, "block-") && !startswith(path, "char-")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid device node path '%s'. Ignoring.", path); return 0; } m = rvalue + n + strspn(rvalue + n, WHITESPACE); if (isempty(m)) m = "rwm"; if (!in_charset(m, "rwm")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid device rights '%s'. Ignoring.", m); return 0; } a = new0(CGroupDeviceAllow, 1); if (!a) return log_oom(); a->path = path; path = NULL; a->r = !!strchr(m, 'r'); a->w = !!strchr(m, 'w'); a->m = !!strchr(m, 'm'); LIST_PREPEND(device_allow, c->device_allow, a); return 0; } int config_parse_blockio_weight( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { CGroupContext *c = data; unsigned long lu; int r; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { c->blockio_weight = 1000; return 0; } r = safe_atolu(rvalue, &lu); if (r < 0 || lu < 10 || lu > 1000) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Block IO weight '%s' invalid. Ignoring.", rvalue); return 0; } c->blockio_weight = lu; return 0; } int config_parse_blockio_device_weight( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_free_ char *path = NULL; CGroupBlockIODeviceWeight *w; CGroupContext *c = data; unsigned long lu; const char *weight; size_t n; int r; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { while (c->blockio_device_weights) cgroup_context_free_blockio_device_weight(c, c->blockio_device_weights); return 0; } n = strcspn(rvalue, WHITESPACE); weight = rvalue + n; if (!*weight) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Expected block device and device weight. Ignoring."); return 0; } path = strndup(rvalue, n); if (!path) return log_oom(); if (!path_startswith(path, "/dev")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid device node path '%s'. Ignoring.", path); return 0; } weight += strspn(weight, WHITESPACE); r = safe_atolu(weight, &lu); if (r < 0 || lu < 10 || lu > 1000) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Block IO weight '%s' invalid. Ignoring.", rvalue); return 0; } w = new0(CGroupBlockIODeviceWeight, 1); if (!w) return log_oom(); w->path = path; path = NULL; w->weight = lu; LIST_PREPEND(device_weights, c->blockio_device_weights, w); return 0; } int config_parse_blockio_bandwidth( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { _cleanup_free_ char *path = NULL; CGroupBlockIODeviceBandwidth *b; CGroupContext *c = data; const char *bandwidth; off_t bytes; bool read; size_t n; int r; assert(filename); assert(lvalue); assert(rvalue); read = streq("BlockIOReadBandwidth", lvalue); if (isempty(rvalue)) { CGroupBlockIODeviceBandwidth *next; LIST_FOREACH_SAFE (device_bandwidths, b, next, c->blockio_device_bandwidths) if (b->read == read) cgroup_context_free_blockio_device_bandwidth(c, b); return 0; } n = strcspn(rvalue, WHITESPACE); bandwidth = rvalue + n; bandwidth += strspn(bandwidth, WHITESPACE); if (!*bandwidth) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Expected space separated pair of device node and bandwidth. Ignoring."); return 0; } path = strndup(rvalue, n); if (!path) return log_oom(); if (!path_startswith(path, "/dev")) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid device node path '%s'. Ignoring.", path); return 0; } r = parse_bytes(bandwidth, &bytes); if (r < 0 || bytes <= 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Block IO Bandwidth '%s' invalid. Ignoring.", rvalue); return 0; } b = new0(CGroupBlockIODeviceBandwidth, 1); if (!b) return log_oom(); b->path = path; path = NULL; b->bandwidth = (uint64_t) bytes; b->read = read; LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, b); return 0; } DEFINE_CONFIG_PARSE_ENUM(config_parse_job_mode, job_mode, JobMode, "Failed to parse job mode"); int config_parse_job_mode_isolate( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { JobMode *m = data; int r; assert(filename); assert(lvalue); assert(rvalue); r = parse_boolean(rvalue); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse boolean, ignoring: %s", rvalue); return 0; } *m = r ? JOB_ISOLATE : JOB_REPLACE; return 0; } int config_parse_personality( const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata) { unsigned long *personality = data, p; assert(filename); assert(lvalue); assert(rvalue); assert(personality); p = personality_from_string(rvalue); if (p == 0xffffffffUL) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Failed to parse personality, ignoring: %s", rvalue); return 0; } *personality = p; return 0; } #define FOLLOW_MAX 8 static int open_follow(char **filename, FILE **_f, Set *names, char **_final) { unsigned c = 0; int fd, r; FILE *f; char *id = NULL; assert(filename); assert(*filename); assert(_f); assert(names); /* This will update the filename pointer if the loaded file is * reached by a symlink. The old string will be freed. */ for (;;) { char *target, *name; if (c++ >= FOLLOW_MAX) return -ELOOP; path_kill_slashes(*filename); /* Add the file name we are currently looking at to * the names of this unit, but only if it is a valid * unit name. */ name = basename(*filename); if (unit_name_is_valid(name, TEMPLATE_VALID)) { id = set_get(names, name); if (!id) { id = strdup(name); if (!id) return -ENOMEM; r = set_consume(names, id); if (r < 0) return r; } } /* Try to open the file name, but don't if its a symlink */ fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW); if (fd >= 0) break; if (errno != ELOOP) return -errno; /* Hmm, so this is a symlink. Let's read the name, and follow it manually */ r = readlink_and_make_absolute(*filename, &target); if (r < 0) return r; free(*filename); *filename = target; } f = fdopen(fd, "re"); if (!f) { r = -errno; close_nointr_nofail(fd); return r; } *_f = f; *_final = id; return 0; } static int merge_by_names(Unit **u, Set *names, const char *id) { char *k; int r; assert(u); assert(*u); assert(names); /* Let's try to add in all symlink names we found */ while ((k = set_steal_first(names))) { /* First try to merge in the other name into our * unit */ r = unit_merge_by_name(*u, k); if (r < 0) { Unit *other; /* Hmm, we couldn't merge the other unit into * ours? Then let's try it the other way * round */ other = manager_get_unit((*u)->manager, k); free(k); if (other) { r = unit_merge(other, *u); if (r >= 0) { *u = other; return merge_by_names(u, names, NULL); } } return r; } if (id == k) unit_choose_id(*u, id); free(k); } return 0; } static int load_from_path(Unit *u, const char *path) { int r; _cleanup_set_free_free_ Set *symlink_names = NULL; _cleanup_fclose_ FILE *f = NULL; _cleanup_free_ char *filename = NULL; char *id = NULL; Unit *merged; struct stat st; assert(u); assert(path); symlink_names = set_new(string_hash_func, string_compare_func); if (!symlink_names) return -ENOMEM; if (path_is_absolute(path)) { filename = strdup(path); if (!filename) return -ENOMEM; r = open_follow(&filename, &f, symlink_names, &id); if (r < 0) { free(filename); filename = NULL; if (r != -ENOENT) return r; } } else { char **p; STRV_FOREACH(p, u->manager->lookup_paths.unit_path) { /* Instead of opening the path right away, we manually * follow all symlinks and add their name to our unit * name set while doing so */ filename = path_make_absolute(path, *p); if (!filename) return -ENOMEM; if (u->manager->unit_path_cache && !set_get(u->manager->unit_path_cache, filename)) r = -ENOENT; else r = open_follow(&filename, &f, symlink_names, &id); if (r < 0) { free(filename); filename = NULL; if (r != -ENOENT) return r; /* Empty the symlink names for the next run */ set_clear_free(symlink_names); continue; } break; } } if (!filename) /* Hmm, no suitable file found? */ return 0; merged = u; r = merge_by_names(&merged, symlink_names, id); if (r < 0) return r; if (merged != u) { u->load_state = UNIT_MERGED; return 0; } if (fstat(fileno(f), &st) < 0) return -errno; if (null_or_empty(&st)) u->load_state = UNIT_MASKED; else { u->load_state = UNIT_LOADED; /* Now, parse the file contents */ r = config_parse(u->id, filename, f, UNIT_VTABLE(u)->sections, config_item_perf_lookup, (void*) load_fragment_gperf_lookup, false, true, u); if (r < 0) return r; } free(u->fragment_path); u->fragment_path = filename; filename = NULL; u->fragment_mtime = timespec_load(&st.st_mtim); if (u->source_path) { if (stat(u->source_path, &st) >= 0) u->source_mtime = timespec_load(&st.st_mtim); else u->source_mtime = 0; } return 0; } int unit_load_fragment(Unit *u) { int r; Iterator i; const char *t; assert(u); assert(u->load_state == UNIT_STUB); assert(u->id); /* First, try to find the unit under its id. We always look * for unit files in the default directories, to make it easy * to override things by placing things in /etc/systemd/system */ r = load_from_path(u, u->id); if (r < 0) return r; /* Try to find an alias we can load this with */ if (u->load_state == UNIT_STUB) SET_FOREACH(t, u->names, i) { if (t == u->id) continue; r = load_from_path(u, t); if (r < 0) return r; if (u->load_state != UNIT_STUB) break; } /* And now, try looking for it under the suggested (originally linked) path */ if (u->load_state == UNIT_STUB && u->fragment_path) { r = load_from_path(u, u->fragment_path); if (r < 0) return r; if (u->load_state == UNIT_STUB) { /* Hmm, this didn't work? Then let's get rid * of the fragment path stored for us, so that * we don't point to an invalid location. */ free(u->fragment_path); u->fragment_path = NULL; } } /* Look for a template */ if (u->load_state == UNIT_STUB && u->instance) { _cleanup_free_ char *k; k = unit_name_template(u->id); if (!k) return -ENOMEM; r = load_from_path(u, k); if (r < 0) return r; if (u->load_state == UNIT_STUB) SET_FOREACH(t, u->names, i) { _cleanup_free_ char *z = NULL; if (t == u->id) continue; z = unit_name_template(t); if (!z) return -ENOMEM; r = load_from_path(u, z); if (r < 0) return r; if (u->load_state != UNIT_STUB) break; } } return 0; } void unit_dump_config_items(FILE *f) { static const struct { const ConfigParserCallback callback; const char *rvalue; } table[] = { #if !defined(HAVE_SYSV_COMPAT) || !defined(HAVE_SECCOMP) || !defined(HAVE_LIBWRAP) || !defined(HAVE_PAM) || !defined(HAVE_SELINUX) || !defined(HAVE_SMACK) || !defined(HAVE_APPARMOR) { config_parse_warn_compat, "NOTSUPPORTED" }, #endif { config_parse_int, "INTEGER" }, { config_parse_unsigned, "UNSIGNED" }, { config_parse_bytes_size, "SIZE" }, { config_parse_bool, "BOOLEAN" }, { config_parse_string, "STRING" }, { config_parse_path, "PATH" }, { config_parse_unit_path_printf, "PATH" }, { config_parse_strv, "STRING [...]" }, { config_parse_exec_nice, "NICE" }, { config_parse_exec_oom_score_adjust, "OOMSCOREADJUST" }, { config_parse_exec_io_class, "IOCLASS" }, { config_parse_exec_io_priority, "IOPRIORITY" }, { config_parse_exec_cpu_sched_policy, "CPUSCHEDPOLICY" }, { config_parse_exec_cpu_sched_prio, "CPUSCHEDPRIO" }, { config_parse_exec_cpu_affinity, "CPUAFFINITY" }, { config_parse_mode, "MODE" }, { config_parse_unit_env_file, "FILE" }, { config_parse_output, "OUTPUT" }, { config_parse_input, "INPUT" }, { config_parse_facility, "FACILITY" }, { config_parse_level, "LEVEL" }, { config_parse_exec_capabilities, "CAPABILITIES" }, { config_parse_exec_secure_bits, "SECUREBITS" }, { config_parse_bounding_set, "BOUNDINGSET" }, { config_parse_limit, "LIMIT" }, { config_parse_unit_deps, "UNIT [...]" }, { config_parse_exec, "PATH [ARGUMENT [...]]" }, { config_parse_service_type, "SERVICETYPE" }, { config_parse_service_restart, "SERVICERESTART" }, #ifdef HAVE_SYSV_COMPAT { config_parse_sysv_priority, "SYSVPRIORITY" }, #endif { config_parse_kill_mode, "KILLMODE" }, { config_parse_kill_signal, "SIGNAL" }, { config_parse_socket_listen, "SOCKET [...]" }, { config_parse_socket_bind, "SOCKETBIND" }, { config_parse_socket_bindtodevice, "NETWORKINTERFACE" }, { config_parse_sec, "SECONDS" }, { config_parse_nsec, "NANOSECONDS" }, { config_parse_path_strv, "PATH [...]" }, { config_parse_unit_requires_mounts_for, "PATH [...]" }, { config_parse_exec_mount_flags, "MOUNTFLAG [...]" }, { config_parse_unit_string_printf, "STRING" }, { config_parse_trigger_unit, "UNIT" }, { config_parse_timer, "TIMER" }, { config_parse_path_spec, "PATH" }, { config_parse_notify_access, "ACCESS" }, { config_parse_ip_tos, "TOS" }, { config_parse_unit_condition_path, "CONDITION" }, { config_parse_unit_condition_string, "CONDITION" }, { config_parse_unit_condition_null, "CONDITION" }, { config_parse_unit_slice, "SLICE" }, { config_parse_documentation, "URL" }, { config_parse_service_timeout, "SECONDS" }, { config_parse_start_limit_action, "ACTION" }, { config_parse_set_status, "STATUS" }, { config_parse_service_sockets, "SOCKETS" }, { config_parse_environ, "ENVIRON" }, #ifdef HAVE_SECCOMP { config_parse_syscall_filter, "SYSCALLS" }, { config_parse_syscall_archs, "ARCHS" }, { config_parse_syscall_errno, "ERRNO" }, #endif { config_parse_cpu_shares, "SHARES" }, { config_parse_memory_limit, "LIMIT" }, { config_parse_device_allow, "DEVICE" }, { config_parse_device_policy, "POLICY" }, { config_parse_blockio_bandwidth, "BANDWIDTH" }, { config_parse_blockio_weight, "WEIGHT" }, { config_parse_blockio_device_weight, "DEVICEWEIGHT" }, { config_parse_long, "LONG" }, { config_parse_socket_service, "SERVICE" }, #ifdef HAVE_SELINUX { config_parse_exec_selinux_context, "LABEL" }, #endif { config_parse_job_mode, "MODE" }, { config_parse_job_mode_isolate, "BOOLEAN" }, }; const char *prev = NULL; const char *i; assert(f); NULSTR_FOREACH(i, load_fragment_gperf_nulstr) { const char *rvalue = "OTHER", *lvalue; unsigned j; size_t prefix_len; const char *dot; const ConfigPerfItem *p; assert_se(p = load_fragment_gperf_lookup(i, strlen(i))); dot = strchr(i, '.'); lvalue = dot ? dot + 1 : i; prefix_len = dot-i; if (dot) if (!prev || !strneq(prev, i, prefix_len+1)) { if (prev) fputc('\n', f); fprintf(f, "[%.*s]\n", (int) prefix_len, i); } for (j = 0; j < ELEMENTSOF(table); j++) if (p->parse == table[j].callback) { rvalue = table[j].rvalue; break; } fprintf(f, "%s=%s\n", lvalue, rvalue); prev = i; } }