/*** 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 #ifdef HAVE_SECCOMP #include #endif #include #include #include #include #include "af-list.h" #include "alloc-util.h" #include "bus-error.h" #include "bus-internal.h" #include "bus-util.h" #include "cap-list.h" #include "capability-util.h" #include "cgroup.h" #include "conf-parser.h" #include "cpu-set-util.h" #include "env-util.h" #include "errno-list.h" #include "escape.h" #include "fd-util.h" #include "fs-util.h" #include "ioprio.h" #include "load-fragment.h" #include "log.h" #include "missing.h" #include "parse-util.h" #include "path-util.h" #include "process-util.h" #include "rlimit-util.h" #ifdef HAVE_SECCOMP #include "seccomp-util.h" #endif #include "securebits.h" #include "signal-util.h" #include "stat-util.h" #include "string-util.h" #include "strv.h" #include "unit-name.h" #include "unit-printf.h" #include "unit.h" #include "user-util.h" #include "utf8.h" #include "web-util.h" 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) { Disabled reason = ltype; switch(reason) { case DISABLED_CONFIGURATION: log_syntax(unit, LOG_DEBUG, filename, line, 0, "Support for option %s= has been disabled at compile time and it is ignored", lvalue); break; case DISABLED_LEGACY: log_syntax(unit, LOG_INFO, filename, line, 0, "Support for option %s= has been removed and it is ignored", lvalue); break; case DISABLED_EXPERIMENTAL: log_syntax(unit, LOG_INFO, filename, line, 0, "Support for option %s= has not yet been enabled and it is ignored", lvalue); break; }; return 0; } 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; const char *p; assert(filename); assert(lvalue); assert(rvalue); p = rvalue; for (;;) { _cleanup_free_ char *word = NULL, *k = NULL; int r; r = extract_first_word(&p, &word, NULL, EXTRACT_RETAIN_ESCAPE); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); break; } r = unit_name_printf(u, word, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve specifiers, ignoring: %m"); 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: %m", k); } return 0; } int config_parse_obsolete_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) { log_syntax(unit, LOG_WARNING, filename, line, 0, "Unit dependency type %s= is obsolete, replacing by %s=, please update your unit file", lvalue, unit_dependency_to_string(ltype)); return config_parse_unit_deps(unit, filename, line, section, section_line, lvalue, ltype, rvalue, data, userdata); } 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) { _cleanup_free_ char *k = NULL; Unit *u = userdata; 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: %m", rvalue); return 0; } return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, 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: %m", rvalue); return 0; } return config_parse_strv(unit, filename, line, section, section_line, lvalue, ltype, k, 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) { _cleanup_free_ char *k = NULL; Unit *u = userdata; 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: %m", rvalue); return 0; } return config_parse_path(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata); } int config_parse_unit_path_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) { char ***x = data; Unit *u = userdata; int r; const char *p; assert(filename); assert(lvalue); assert(rvalue); assert(u); for (p = rvalue;;) { _cleanup_free_ char *word = NULL, *k = NULL; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } r = unit_full_printf(u, word, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers on \"%s\", ignoring: %m", word); return 0; } if (!utf8_is_valid(k)) { log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, rvalue); return 0; } if (!path_is_absolute(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Symlink path is not absolute: %s", k); return 0; } path_kill_slashes(k); r = strv_push(x, k); if (r < 0) return log_oom(); k = NULL; } } 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) { _cleanup_free_ SocketPort *p = NULL; SocketPort *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) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers on %s, ignoring: %m", rvalue); return 0; } 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: %m", rvalue); return 0; } r = socket_address_parse_netlink(&p->address, k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address value, ignoring: %s", rvalue); 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: %m", rvalue); return 0; } r = socket_address_parse_and_warn(&p->address, k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse address value, ignoring: %s", rvalue); 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, 0, "Address family not supported, ignoring: %s", rvalue); return 0; } } p->fd = -1; p->auxiliary_fds = NULL; p->n_auxiliary_fds = 0; 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); p = NULL; return 0; } int config_parse_socket_protocol(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; assert(filename); assert(lvalue); assert(rvalue); assert(data); s = SOCKET(data); if (streq(rvalue, "udplite")) s->socket_protocol = IPPROTO_UDPLITE; else if (streq(rvalue, "sctp")) s->socket_protocol = IPPROTO_SCTP; else { log_syntax(unit, LOG_ERR, filename, line, 0, "Socket protocol not supported, ignoring: %s", rvalue); return 0; } 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, r, "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 = parse_nice(rvalue, &priority); if (r < 0) { if (r == -ERANGE) log_syntax(unit, LOG_ERR, filename, line, r, "Nice priority out of range, ignoring: %s", rvalue); else log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse nice priority, 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, 0, "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; const char *p; bool semicolon; int r; assert(filename); assert(lvalue); assert(rvalue); assert(e); e += ltype; rvalue += strspn(rvalue, WHITESPACE); if (isempty(rvalue)) { /* An empty assignment resets the list */ *e = exec_command_free_list(*e); return 0; } p = rvalue; do { _cleanup_free_ char *path = NULL, *firstword = NULL; bool separate_argv0 = false, ignore = false, privileged = false; _cleanup_free_ ExecCommand *nce = NULL; _cleanup_strv_free_ char **n = NULL; size_t nlen = 0, nbufsize = 0; char *f; int i; semicolon = false; r = extract_first_word_and_warn(&p, &firstword, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE, unit, filename, line, rvalue); if (r <= 0) return 0; f = firstword; for (i = 0; i < 3; i++) { /* We accept an absolute path as first argument. * If it's prefixed with - and the path doesn't exist, * we ignore it instead of erroring out; * if it's prefixed with @, we allow overriding of argv[0]; * and if it's prefixed with !, it will be run with full privileges */ if (*f == '-' && !ignore) ignore = true; else if (*f == '@' && !separate_argv0) separate_argv0 = true; else if (*f == '+' && !privileged) privileged = true; else break; f++; } if (isempty(f)) { /* First word is either "-" or "@" with no command. */ log_syntax(unit, LOG_ERR, filename, line, 0, "Empty path in command line, ignoring: \"%s\"", rvalue); return 0; } if (!string_is_safe(f)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Executable path contains special characters, ignoring: %s", rvalue); return 0; } if (!path_is_absolute(f)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Executable path is not absolute, ignoring: %s", rvalue); return 0; } if (endswith(f, "/")) { log_syntax(unit, LOG_ERR, filename, line, 0, "Executable path specifies a directory, ignoring: %s", rvalue); return 0; } if (f == firstword) { path = firstword; firstword = NULL; } else { path = strdup(f); if (!path) return log_oom(); } if (!separate_argv0) { if (!GREEDY_REALLOC(n, nbufsize, nlen + 2)) return log_oom(); f = strdup(path); if (!f) return log_oom(); n[nlen++] = f; n[nlen] = NULL; } path_kill_slashes(path); while (!isempty(p)) { _cleanup_free_ char *word = NULL; /* Check explicitly for an unquoted semicolon as * command separator token. */ if (p[0] == ';' && (!p[1] || strchr(WHITESPACE, p[1]))) { p++; p += strspn(p, WHITESPACE); semicolon = true; break; } /* Check for \; explicitly, to not confuse it with \\; * or "\;" or "\\;" etc. extract_first_word would * return the same for all of those. */ if (p[0] == '\\' && p[1] == ';' && (!p[2] || strchr(WHITESPACE, p[2]))) { p += 2; p += strspn(p, WHITESPACE); if (!GREEDY_REALLOC(n, nbufsize, nlen + 2)) return log_oom(); f = strdup(";"); if (!f) return log_oom(); n[nlen++] = f; n[nlen] = NULL; continue; } r = extract_first_word_and_warn(&p, &word, NULL, EXTRACT_QUOTES|EXTRACT_CUNESCAPE, unit, filename, line, rvalue); if (r == 0) break; else if (r < 0) return 0; if (!GREEDY_REALLOC(n, nbufsize, nlen + 2)) return log_oom(); n[nlen++] = word; n[nlen] = NULL; word = NULL; } if (!n || !n[0]) { log_syntax(unit, LOG_ERR, filename, line, 0, "Empty executable name or zeroeth argument, ignoring: %s", rvalue); return 0; } nce = new0(ExecCommand, 1); if (!nce) return log_oom(); nce->argv = n; nce->path = path; nce->ignore = ignore; nce->privileged = privileged; exec_command_append_list(e, nce); /* Do not _cleanup_free_ these. */ n = NULL; path = NULL; nce = NULL; rvalue = p; } while (semicolon); return 0; } 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, "*")) { if (!ifname_valid(rvalue)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Interface name is invalid, ignoring: %s", rvalue); return 0; } 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_input, exec_input, ExecInput, "Failed to parse input literal specifier"); DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output literal specifier"); int config_parse_exec_input(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; const char *name; int r; assert(data); assert(filename); assert(line); assert(rvalue); name = startswith(rvalue, "fd:"); if (name) { /* Strip prefix and validate fd name */ if (!fdname_is_valid(name)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name, ignoring: %s", name); return 0; } c->std_input = EXEC_INPUT_NAMED_FD; r = free_and_strdup(&c->stdio_fdname[STDIN_FILENO], name); if (r < 0) log_oom(); return r; } else { ExecInput ei = exec_input_from_string(rvalue); if (ei == _EXEC_INPUT_INVALID) log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse input specifier, ignoring: %s", rvalue); else c->std_input = ei; return 0; } } int config_parse_exec_output(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; ExecOutput eo; const char *name; int r; assert(data); assert(filename); assert(line); assert(lvalue); assert(rvalue); name = startswith(rvalue, "fd:"); if (name) { /* Strip prefix and validate fd name */ if (!fdname_is_valid(name)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name, ignoring: %s", name); return 0; } eo = EXEC_OUTPUT_NAMED_FD; } else { eo = exec_output_from_string(rvalue); if (eo == _EXEC_OUTPUT_INVALID) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output specifier, ignoring: %s", rvalue); return 0; } } if (streq(lvalue, "StandardOutput")) { c->std_output = eo; r = free_and_strdup(&c->stdio_fdname[STDOUT_FILENO], name); if (r < 0) log_oom(); return r; } else if (streq(lvalue, "StandardError")) { c->std_error = eo; r = free_and_strdup(&c->stdio_fdname[STDERR_FILENO], name); if (r < 0) log_oom(); return r; } else { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse output property, ignoring: %s", lvalue); return 0; } } 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, 0, "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, 0, "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, 0, "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; _cleanup_cpu_free_ cpu_set_t *cpuset = NULL; int ncpus; assert(filename); assert(lvalue); assert(rvalue); assert(data); ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue); if (ncpus < 0) return ncpus; if (c->cpuset) CPU_FREE(c->cpuset); if (ncpus == 0) /* An empty assignment resets the CPU list */ c->cpuset = NULL; else { c->cpuset = cpuset; cpuset = NULL; } c->cpuset_ncpus = ncpus; 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; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* An empty assignment resets the field */ c->secure_bits = 0; return 0; } for (p = rvalue;;) { _cleanup_free_ char *word = NULL; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } if (streq(word, "keep-caps")) c->secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<secure_bits |= 1<secure_bits |= 1< replace */ *capability_set = sum; else /* previous data -> merge */ *capability_set |= sum; return 0; } int config_parse_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) { struct rlimit **rl = data, d = {}; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); r = rlimit_parse(ltype, rvalue, &d); if (r == -EILSEQ) { log_syntax(unit, LOG_WARNING, filename, line, r, "Soft resource limit chosen higher than hard limit, ignoring: %s", rvalue); return 0; } if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse resource value, ignoring: %s", rvalue); return 0; } if (rl[ltype]) *rl[ltype] = d; else { rl[ltype] = newdup(struct rlimit, &d, 1); if (!rl[ltype]) return log_oom(); } 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_exec_utmp_mode, exec_utmp_mode, ExecUtmpMode, "Failed to parse utmp mode"); DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode"); 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) { unsigned long flags = 0; ExecContext *c = data; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (streq(rvalue, "shared")) flags = MS_SHARED; else if (streq(rvalue, "slave")) flags = MS_SLAVE; else if (streq(rvalue, "private")) flags = MS_PRIVATE; else { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse mount flag %s, ignoring.", 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)) { c->selinux_context = mfree(c->selinux_context); 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: %m"); 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)) { c->apparmor_profile = mfree(c->apparmor_profile); 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: %m"); return 0; } free(c->apparmor_profile); c->apparmor_profile = k; c->apparmor_profile_ignore = ignore; return 0; } int config_parse_exec_smack_process_label( 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)) { c->smack_process_label = mfree(c->smack_process_label); c->smack_process_label_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: %m"); return 0; } free(c->smack_process_label); c->smack_process_label = k; c->smack_process_label_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 usec = 0; TimerValue *v; TimerBase b; CalendarSpec *c = NULL; Unit *u = userdata; _cleanup_free_ char *k = NULL; int r; 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, 0, "Failed to parse timer base, ignoring: %s", lvalue); return 0; } r = unit_full_printf(u, rvalue, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue); return 0; } if (b == TIMER_CALENDAR) { if (calendar_spec_from_string(k, &c) < 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse calendar specification, ignoring: %s", k); return 0; } } else { if (parse_sec(k, &usec) < 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse timer value, ignoring: %s", k); return 0; } } v = new0(TimerValue, 1); if (!v) { calendar_spec_free(c); return log_oom(); } v->base = b; v->value = usec; 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, 0, "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: %m"); return 0; } type = unit_name_to_type(p); if (type < 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Unit type not valid, ignoring: %s", rvalue); return 0; } if (type == u->type) { log_syntax(unit, LOG_ERR, filename, line, 0, "Trigger cannot be of same type, ignoring: %s", rvalue); return 0; } r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_TRIGGERS, p, NULL, true); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add trigger on %s, ignoring: %m", p); 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, 0, "Failed to parse path type, ignoring: %s", lvalue); return 0; } r = unit_full_printf(UNIT(p), rvalue, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers on %s. Ignoring.", rvalue); return 0; } if (!path_is_absolute(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "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_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; _cleanup_free_ char *p = NULL; Socket *s = data; Unit *x; int r; 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, 0, "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_fdname( 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; Socket *s = data; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { s->fdname = mfree(s->fdname); return 0; } 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 (!fdname_is_valid(p)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid file descriptor name, ignoring: %s", p); return 0; } return free_and_replace(s->fdname, p); } 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; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); p = rvalue; for (;;) { _cleanup_free_ char *word = NULL, *k = NULL; r = extract_first_word(&p, &word, NULL, 0); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Trailing garbage in sockets, ignoring: %s", rvalue); break; } r = unit_name_printf(UNIT(s), word, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve specifiers, ignoring: %m"); continue; } if (!endswith(k, ".socket")) { log_syntax(unit, LOG_ERR, filename, line, 0, "Unit must be of type socket, ignoring: %s", k); continue; } r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_WANTS, UNIT_AFTER, k, NULL, true); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k); r = unit_add_dependency_by_name(UNIT(s), UNIT_TRIGGERED_BY, k, NULL, true); if (r < 0) log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add dependency on %s, ignoring: %m", k); } return 0; } int config_parse_bus_name( 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; 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: %m", rvalue); return 0; } if (!service_name_is_valid(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid bus name %s, ignoring.", k); return 0; } return config_parse_string(unit, filename, line, section, section_line, lvalue, ltype, k, data, userdata); } 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; usec_t usec; int r; assert(filename); assert(lvalue); assert(rvalue); assert(s); /* This is called for three cases: TimeoutSec=, TimeoutStopSec= and TimeoutStartSec=. */ r = parse_sec(rvalue, &usec); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue); return 0; } /* Traditionally, these options accepted 0 to disable the timeouts. However, a timeout of 0 suggests it happens * immediately, hence fix this to become USEC_INFINITY instead. This is in-line with how we internally handle * all other timeouts. */ if (usec <= 0) usec = USEC_INFINITY; if (!streq(lvalue, "TimeoutStopSec")) { s->start_timeout_defined = true; s->timeout_start_usec = usec; } if (!streq(lvalue, "TimeoutStartSec")) s->timeout_stop_usec = usec; return 0; } int config_parse_sec_fix_0( 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) { usec_t *usec = data; int r; assert(filename); assert(lvalue); assert(rvalue); assert(usec); /* This is pretty much like config_parse_sec(), except that this treats a time of 0 as infinity, for * compatibility with older versions of systemd where 0 instead of infinity was used as indicator to turn off a * timeout. */ r = parse_sec(rvalue, usec); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse %s= parameter, ignoring: %s", lvalue, rvalue); return 0; } if (*usec <= 0) *usec = USEC_INFINITY; return 0; } int config_parse_user_group( 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 **user = data, *n; Unit *u = userdata; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); if (isempty(rvalue)) n = NULL; else { _cleanup_free_ char *k = NULL; r = unit_full_printf(u, rvalue, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", rvalue); return 0; } if (!valid_user_group_name_or_id(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID, ignoring: %s", k); return 0; } n = k; k = NULL; } free(*user); *user = n; return 0; } int config_parse_user_group_strv( 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 ***users = data; Unit *u = userdata; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); if (isempty(rvalue)) { char **empty; empty = new0(char*, 1); if (!empty) return log_oom(); strv_free(*users); *users = empty; return 0; } p = rvalue; for (;;) { _cleanup_free_ char *word = NULL, *k = NULL; r = extract_first_word(&p, &word, NULL, 0); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); break; } r = unit_full_printf(u, word, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in %s, ignoring: %m", word); continue; } if (!valid_user_group_name_or_id(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid user/group name or numeric ID, ignoring: %s", k); continue; } r = strv_push(users, k); if (r < 0) return log_oom(); k = NULL; } 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_(sd_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, 0, "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; } DEFINE_CONFIG_PARSE_ENUM(config_parse_bus_policy_world, bus_policy_access, BusPolicyAccess, "Failed to parse bus name policy access"); int config_parse_bus_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) { _cleanup_free_ BusNamePolicy *p = NULL; _cleanup_free_ char *id_str = NULL; BusName *busname = data; char *access_str; assert(filename); assert(lvalue); assert(rvalue); assert(data); p = new0(BusNamePolicy, 1); if (!p) return log_oom(); if (streq(lvalue, "AllowUser")) p->type = BUSNAME_POLICY_TYPE_USER; else if (streq(lvalue, "AllowGroup")) p->type = BUSNAME_POLICY_TYPE_GROUP; else assert_not_reached("Unknown lvalue"); id_str = strdup(rvalue); if (!id_str) return log_oom(); access_str = strpbrk(id_str, WHITESPACE); if (!access_str) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid busname policy value '%s'", rvalue); return 0; } *access_str = '\0'; access_str++; access_str += strspn(access_str, WHITESPACE); p->access = bus_policy_access_from_string(access_str); if (p->access < 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid busname policy access type '%s'", access_str); return 0; } p->name = id_str; id_str = NULL; LIST_PREPEND(policy, busname->policy, p); p = NULL; return 0; } int config_parse_working_directory( 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 missing_ok; int r; assert(filename); assert(lvalue); assert(rvalue); assert(c); assert(u); if (rvalue[0] == '-') { missing_ok = true; rvalue++; } else missing_ok = false; if (streq(rvalue, "~")) { c->working_directory_home = true; c->working_directory = mfree(c->working_directory); } else { _cleanup_free_ char *k = NULL; r = unit_full_printf(u, rvalue, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers in working directory path '%s', ignoring: %m", rvalue); return 0; } path_kill_slashes(k); if (!utf8_is_valid(k)) { log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, rvalue); return 0; } if (!path_is_absolute(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Working directory path '%s' is not absolute, ignoring.", rvalue); return 0; } free_and_replace(c->working_directory, k); c->working_directory_home = false; } c->working_directory_missing_ok = missing_ok; 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; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment frees the list */ *env = strv_free(*env); 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); return 0; } if (!path_is_absolute(n[0] == '-' ? n + 1 : n)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Path '%s' is not absolute, ignoring.", n); return 0; } r = strv_extend(env, n); 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; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *env = strv_free(*env); return 0; } for (p = rvalue;; ) { _cleanup_free_ char *word = NULL, *k = NULL; r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } if (u) { r = unit_full_printf(u, word, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve specifiers, ignoring: %s", k); continue; } } else { k = word; word = NULL; } if (!env_assignment_is_valid(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid environment assignment, ignoring: %s", k); continue; } r = strv_env_replace(env, k); if (r < 0) return log_oom(); k = NULL; } } int config_parse_pass_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) { const char *whole_rvalue = rvalue; char*** passenv = data; _cleanup_strv_free_ char **n = NULL; size_t nlen = 0, nbufsize = 0; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *passenv = strv_free(*passenv); return 0; } for (;;) { _cleanup_free_ char *word = NULL; r = extract_first_word(&rvalue, &word, NULL, EXTRACT_QUOTES); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Trailing garbage in %s, ignoring: %s", lvalue, whole_rvalue); break; } if (!env_name_is_valid(word)) { log_syntax(unit, LOG_ERR, filename, line, EINVAL, "Invalid environment name for %s, ignoring: %s", lvalue, word); continue; } if (!GREEDY_REALLOC(n, nbufsize, nlen + 2)) return log_oom(); n[nlen++] = word; n[nlen] = NULL; word = NULL; } if (n) { r = strv_extend_strv(passenv, n, true); if (r < 0) return r; } 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, 0, "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) { _cleanup_free_ char *p = NULL; Condition **list = data, *c; ConditionType t = ltype; bool trigger, negate; Unit *u = userdata; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *list = condition_free_list(*list); 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); return 0; } if (!path_is_absolute(p)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Path in condition not absolute, ignoring: %s", p); return 0; } c = condition_new(t, p, trigger, negate); if (!c) return log_oom(); LIST_PREPEND(conditions, *list, 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) { _cleanup_free_ char *s = NULL; Condition **list = data, *c; ConditionType t = ltype; bool trigger, negate; Unit *u = userdata; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *list = condition_free_list(*list); 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); return 0; } c = condition_new(t, s, trigger, negate); if (!c) return log_oom(); LIST_PREPEND(conditions, *list, 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) { Condition **list = data, *c; bool trigger, negate; int b; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *list = condition_free_list(*list); 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, *list, 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_emergency_action, emergency_action, EmergencyAction, "Failed to parse failure 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; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); for (p = rvalue;; ) { _cleanup_free_ char *word = NULL; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } if (!utf8_is_valid(word)) { log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, rvalue); continue; } r = unit_require_mounts_for(u, word); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to add required mount \"%s\", ignoring: %m", word); continue; } } } 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 */ u->documentation = strv_free(u->documentation); 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 (documentation_url_is_valid(*a)) *(b++) = *a; else { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid URL, ignoring: %s", *a); free(*a); } } if (b) *b = NULL; return r; } #ifdef HAVE_SECCOMP static int syscall_filter_parse_one( const char *unit, const char *filename, unsigned line, ExecContext *c, bool invert, const char *t, bool warn) { int r; if (t[0] == '@') { const SyscallFilterSet *set; const char *i; set = syscall_filter_set_find(t); if (!set) { if (warn) log_syntax(unit, LOG_WARNING, filename, line, 0, "Don't know system call group, ignoring: %s", t); return 0; } NULSTR_FOREACH(i, set->value) { r = syscall_filter_parse_one(unit, filename, line, c, invert, i, false); if (r < 0) return r; } } else { int id; id = seccomp_syscall_resolve_name(t); if (id == __NR_SCMP_ERROR) { if (warn) log_syntax(unit, LOG_WARNING, filename, line, 0, "Failed to parse system call, ignoring: %s", t); return 0; } /* 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 == 0) return 0; if (r < 0) return log_oom(); } else (void) set_remove(c->syscall_filter, INT_TO_PTR(id + 1)); } return 0; } 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) { ExecContext *c = data; Unit *u = userdata; bool invert = false; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(u); if (isempty(rvalue)) { /* Empty assignment resets the list */ c->syscall_filter = set_free(c->syscall_filter); c->syscall_whitelist = false; return 0; } if (rvalue[0] == '~') { invert = true; rvalue++; } if (!c->syscall_filter) { c->syscall_filter = set_new(NULL); if (!c->syscall_filter) return log_oom(); if (invert) /* Allow everything but the ones listed */ c->syscall_whitelist = false; else { /* Allow nothing but the ones listed */ c->syscall_whitelist = true; /* Accept default syscalls if we are on a whitelist */ r = syscall_filter_parse_one(unit, filename, line, c, false, "@default", false); if (r < 0) return r; } } p = rvalue; for (;;) { _cleanup_free_ char *word = NULL; r = extract_first_word(&p, &word, NULL, 0); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); break; } r = syscall_filter_parse_one(unit, filename, line, c, invert, word, true); if (r < 0) return r; } 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; const char *p; int r; if (isempty(rvalue)) { *archs = set_free(*archs); return 0; } r = set_ensure_allocated(archs, NULL); if (r < 0) return log_oom(); for (p = rvalue;;) { _cleanup_free_ char *word = NULL; uint32_t a; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } r = seccomp_arch_from_string(word, &a); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse system call architecture \"%s\", ignoring: %m", word); continue; } r = set_put(*archs, UINT32_TO_PTR(a + 1)); if (r < 0) return log_oom(); } } 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, 0, "Failed to parse error number, ignoring: %s", rvalue); return 0; } c->syscall_errno = e; return 0; } int config_parse_address_families( 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; bool invert = false; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { /* Empty assignment resets the list */ c->address_families = set_free(c->address_families); c->address_families_whitelist = false; return 0; } if (rvalue[0] == '~') { invert = true; rvalue++; } if (!c->address_families) { c->address_families = set_new(NULL); if (!c->address_families) return log_oom(); c->address_families_whitelist = !invert; } for (p = rvalue;;) { _cleanup_free_ char *word = NULL; int af; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } af = af_from_name(word); if (af <= 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse address family \"%s\", ignoring: %m", word); continue; } /* If we previously wanted to forbid an address family and now * we want to allow it, then just remove it from the list. */ if (!invert == c->address_families_whitelist) { r = set_put(c->address_families, INT_TO_PTR(af)); if (r < 0) return log_oom(); } else set_remove(c->address_families, INT_TO_PTR(af)); } } int config_parse_restrict_namespaces( 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; bool invert = false; int r; if (isempty(rvalue)) { /* Reset to the default. */ c->restrict_namespaces = NAMESPACE_FLAGS_ALL; return 0; } if (rvalue[0] == '~') { invert = true; rvalue++; } r = parse_boolean(rvalue); if (r > 0) c->restrict_namespaces = 0; else if (r == 0) c->restrict_namespaces = NAMESPACE_FLAGS_ALL; else { /* Not a boolean argument, in this case it's a list of namespace types. */ r = namespace_flag_from_string_many(rvalue, &c->restrict_namespaces); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse namespace type string, ignoring: %s", rvalue); return 0; } } if (invert) c->restrict_namespaces = (~c->restrict_namespaces) & NAMESPACE_FLAGS_ALL; 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 = NULL; 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); return 0; } 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; } r = unit_set_slice(u, slice); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to assign slice %s to unit %s. Ignoring.", slice->id, u->id); return 0; } return 0; } DEFINE_CONFIG_PARSE_ENUM(config_parse_device_policy, cgroup_device_policy, CGroupDevicePolicy, "Failed to parse device policy"); int config_parse_cpu_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) { uint64_t *weight = data; int r; assert(filename); assert(lvalue); assert(rvalue); r = cg_weight_parse(rvalue, weight); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "CPU weight '%s' invalid. Ignoring.", rvalue); return 0; } return 0; } 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) { uint64_t *shares = data; int r; assert(filename); assert(lvalue); assert(rvalue); r = cg_cpu_shares_parse(rvalue, shares); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "CPU shares '%s' invalid. Ignoring.", rvalue); return 0; } return 0; } int config_parse_cpu_quota( 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; int r; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { c->cpu_quota_per_sec_usec = USEC_INFINITY; return 0; } r = parse_percent_unbounded(rvalue); if (r <= 0) { log_syntax(unit, LOG_ERR, filename, line, r, "CPU quota '%s' invalid. Ignoring.", rvalue); return 0; } c->cpu_quota_per_sec_usec = ((usec_t) r * USEC_PER_SEC) / 100U; 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; uint64_t bytes = CGROUP_LIMIT_MAX; int r; if (!isempty(rvalue) && !streq(rvalue, "infinity")) { r = parse_percent(rvalue); if (r < 0) { r = parse_size(rvalue, 1024, &bytes); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Memory limit '%s' invalid. Ignoring.", rvalue); return 0; } } else bytes = physical_memory_scale(r, 100U); if (bytes <= 0 || bytes >= UINT64_MAX) { log_syntax(unit, LOG_ERR, filename, line, 0, "Memory limit '%s' out of range. Ignoring.", rvalue); return 0; } } if (streq(lvalue, "MemoryLow")) c->memory_low = bytes; else if (streq(lvalue, "MemoryHigh")) c->memory_high = bytes; else if (streq(lvalue, "MemoryMax")) c->memory_max = bytes; else if (streq(lvalue, "MemorySwapMax")) c->memory_swap_max = bytes; else if (streq(lvalue, "MemoryLimit")) c->memory_limit = bytes; else return -EINVAL; return 0; } int config_parse_tasks_max( 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) { uint64_t *tasks_max = data, v; Unit *u = userdata; int r; if (isempty(rvalue)) { *tasks_max = u->manager->default_tasks_max; return 0; } if (streq(rvalue, "infinity")) { *tasks_max = CGROUP_LIMIT_MAX; return 0; } r = parse_percent(rvalue); if (r < 0) { r = safe_atou64(rvalue, &v); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Maximum tasks value '%s' invalid. Ignoring.", rvalue); return 0; } } else v = system_tasks_max_scale(r, 100U); if (v <= 0 || v >= UINT64_MAX) { log_syntax(unit, LOG_ERR, filename, line, 0, "Maximum tasks value '%s' out of range. Ignoring.", rvalue); return 0; } *tasks_max = v; 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, *t = NULL; CGroupContext *c = data; CGroupDeviceAllow *a; const char *m = NULL; size_t n; int r; if (isempty(rvalue)) { while (c->device_allow) cgroup_context_free_device_allow(c, c->device_allow); return 0; } r = unit_full_printf(userdata, rvalue, &t); if(r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to resolve specifiers in %s, ignoring: %m", rvalue); } n = strcspn(t, WHITESPACE); path = strndup(t, n); if (!path) return log_oom(); if (!is_deviceallow_pattern(path)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid device node path '%s'. Ignoring.", path); return 0; } m = t + n + strspn(t + n, WHITESPACE); if (isempty(m)) m = "rwm"; if (!in_charset(m, "rwm")) { log_syntax(unit, LOG_ERR, filename, line, 0, "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_io_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) { uint64_t *weight = data; int r; assert(filename); assert(lvalue); assert(rvalue); r = cg_weight_parse(rvalue, weight); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "IO weight '%s' invalid. Ignoring.", rvalue); return 0; } return 0; } int config_parse_io_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; CGroupIODeviceWeight *w; CGroupContext *c = data; const char *weight; uint64_t u; size_t n; int r; assert(filename); assert(lvalue); assert(rvalue); if (isempty(rvalue)) { while (c->io_device_weights) cgroup_context_free_io_device_weight(c, c->io_device_weights); return 0; } n = strcspn(rvalue, WHITESPACE); weight = rvalue + n; weight += strspn(weight, WHITESPACE); if (isempty(weight)) { log_syntax(unit, LOG_ERR, filename, line, 0, "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, 0, "Invalid device node path '%s'. Ignoring.", path); return 0; } r = cg_weight_parse(weight, &u); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "IO weight '%s' invalid. Ignoring.", weight); return 0; } assert(u != CGROUP_WEIGHT_INVALID); w = new0(CGroupIODeviceWeight, 1); if (!w) return log_oom(); w->path = path; path = NULL; w->weight = u; LIST_PREPEND(device_weights, c->io_device_weights, w); return 0; } int config_parse_io_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) { _cleanup_free_ char *path = NULL; CGroupIODeviceLimit *l = NULL, *t; CGroupContext *c = data; CGroupIOLimitType type; const char *limit; uint64_t num; size_t n; int r; assert(filename); assert(lvalue); assert(rvalue); type = cgroup_io_limit_type_from_string(lvalue); assert(type >= 0); if (isempty(rvalue)) { LIST_FOREACH(device_limits, l, c->io_device_limits) l->limits[type] = cgroup_io_limit_defaults[type]; return 0; } n = strcspn(rvalue, WHITESPACE); limit = rvalue + n; limit += strspn(limit, WHITESPACE); if (!*limit) { log_syntax(unit, LOG_ERR, filename, line, 0, "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, 0, "Invalid device node path '%s'. Ignoring.", path); return 0; } if (streq("infinity", limit)) { num = CGROUP_LIMIT_MAX; } else { r = parse_size(limit, 1000, &num); if (r < 0 || num <= 0) { log_syntax(unit, LOG_ERR, filename, line, r, "IO Limit '%s' invalid. Ignoring.", rvalue); return 0; } } LIST_FOREACH(device_limits, t, c->io_device_limits) { if (path_equal(path, t->path)) { l = t; break; } } if (!l) { CGroupIOLimitType ttype; l = new0(CGroupIODeviceLimit, 1); if (!l) return log_oom(); l->path = path; path = NULL; for (ttype = 0; ttype < _CGROUP_IO_LIMIT_TYPE_MAX; ttype++) l->limits[ttype] = cgroup_io_limit_defaults[ttype]; LIST_PREPEND(device_limits, c->io_device_limits, l); } l->limits[type] = num; 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) { uint64_t *weight = data; int r; assert(filename); assert(lvalue); assert(rvalue); r = cg_blkio_weight_parse(rvalue, weight); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Block IO weight '%s' invalid. Ignoring.", rvalue); return 0; } 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; const char *weight; uint64_t u; 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; weight += strspn(weight, WHITESPACE); if (isempty(weight)) { log_syntax(unit, LOG_ERR, filename, line, 0, "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, 0, "Invalid device node path '%s'. Ignoring.", path); return 0; } r = cg_blkio_weight_parse(weight, &u); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Block IO weight '%s' invalid. Ignoring.", weight); return 0; } assert(u != CGROUP_BLKIO_WEIGHT_INVALID); w = new0(CGroupBlockIODeviceWeight, 1); if (!w) return log_oom(); w->path = path; path = NULL; w->weight = u; 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 = NULL, *t; CGroupContext *c = data; const char *bandwidth; uint64_t bytes; bool read; size_t n; int r; assert(filename); assert(lvalue); assert(rvalue); read = streq("BlockIOReadBandwidth", lvalue); if (isempty(rvalue)) { LIST_FOREACH(device_bandwidths, b, c->blockio_device_bandwidths) { b->rbps = CGROUP_LIMIT_MAX; b->wbps = CGROUP_LIMIT_MAX; } return 0; } n = strcspn(rvalue, WHITESPACE); bandwidth = rvalue + n; bandwidth += strspn(bandwidth, WHITESPACE); if (!*bandwidth) { log_syntax(unit, LOG_ERR, filename, line, 0, "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, 0, "Invalid device node path '%s'. Ignoring.", path); return 0; } r = parse_size(bandwidth, 1000, &bytes); if (r < 0 || bytes <= 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Block IO Bandwidth '%s' invalid. Ignoring.", rvalue); return 0; } LIST_FOREACH(device_bandwidths, t, c->blockio_device_bandwidths) { if (path_equal(path, t->path)) { b = t; break; } } if (!t) { b = new0(CGroupBlockIODeviceBandwidth, 1); if (!b) return log_oom(); b->path = path; path = NULL; b->rbps = CGROUP_LIMIT_MAX; b->wbps = CGROUP_LIMIT_MAX; LIST_PREPEND(device_bandwidths, c->blockio_device_bandwidths, b); } if (read) b->rbps = bytes; else b->wbps = bytes; 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, r, "Failed to parse boolean, ignoring: %s", rvalue); return 0; } *m = r ? JOB_ISOLATE : JOB_REPLACE; return 0; } int config_parse_runtime_directory( 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***rt = data; Unit *u = userdata; const char *p; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *rt = strv_free(*rt); return 0; } for (p = rvalue;;) { _cleanup_free_ char *word = NULL, *k = NULL; r = extract_first_word(&p, &word, NULL, EXTRACT_QUOTES); if (r == 0) return 0; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_WARNING, filename, line, r, "Invalid syntax, ignoring: %s", rvalue); return 0; } r = unit_name_printf(u, word, &k); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve specifiers in \"%s\", ignoring: %m", word); continue; } if (!filename_is_valid(k)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Runtime directory is not valid, ignoring assignment: %s", rvalue); continue; } r = strv_push(rt, k); if (r < 0) return log_oom(); k = NULL; } } int config_parse_set_status( 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) { size_t l; const char *word, *state; int r; ExitStatusSet *status_set = data; assert(filename); assert(lvalue); assert(rvalue); assert(data); /* Empty assignment resets the list */ if (isempty(rvalue)) { exit_status_set_free(status_set); return 0; } FOREACH_WORD(word, l, rvalue, state) { _cleanup_free_ char *temp; int val; Set **set; temp = strndup(word, l); if (!temp) return log_oom(); r = safe_atoi(temp, &val); if (r < 0) { val = signal_from_string_try_harder(temp); if (val <= 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse value, ignoring: %s", word); continue; } set = &status_set->signal; } else { if (val < 0 || val > 255) { log_syntax(unit, LOG_ERR, filename, line, 0, "Value %d is outside range 0-255, ignoring", val); continue; } set = &status_set->status; } r = set_ensure_allocated(set, NULL); if (r < 0) return log_oom(); r = set_put(*set, INT_TO_PTR(val)); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Unable to store: %s", word); return r; } } if (!isempty(state)) log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring."); return 0; } int config_parse_namespace_path_strv( 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*** sv = data; const char *prev; const char *cur; int r; assert(filename); assert(lvalue); assert(rvalue); assert(data); if (isempty(rvalue)) { /* Empty assignment resets the list */ *sv = strv_free(*sv); return 0; } prev = cur = rvalue; for (;;) { _cleanup_free_ char *word = NULL; int offset; r = extract_first_word(&cur, &word, NULL, EXTRACT_QUOTES); if (r == 0) break; if (r == -ENOMEM) return log_oom(); if (r < 0) { log_syntax(unit, LOG_ERR, filename, line, r, "Trailing garbage, ignoring: %s", prev); return 0; } if (!utf8_is_valid(word)) { log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, word); prev = cur; continue; } offset = word[0] == '-'; if (!path_is_absolute(word + offset)) { log_syntax(unit, LOG_ERR, filename, line, 0, "Not an absolute path, ignoring: %s", word); prev = cur; continue; } path_kill_slashes(word + offset); r = strv_push(sv, word); if (r < 0) return log_oom(); prev = cur; word = NULL; } return 0; } int config_parse_no_new_privileges( 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 k; assert(filename); assert(lvalue); assert(rvalue); assert(data); k = parse_boolean(rvalue); if (k < 0) { log_syntax(unit, LOG_ERR, filename, line, k, "Failed to parse boolean value, ignoring: %s", rvalue); return 0; } c->no_new_privileges = k; c->no_new_privileges_set = true; return 0; } int config_parse_protect_home( 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 k; assert(filename); assert(lvalue); assert(rvalue); assert(data); /* Our enum shall be a superset of booleans, hence first try * to parse as boolean, and then as enum */ k = parse_boolean(rvalue); if (k > 0) c->protect_home = PROTECT_HOME_YES; else if (k == 0) c->protect_home = PROTECT_HOME_NO; else { ProtectHome h; h = protect_home_from_string(rvalue); if (h < 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse protect home value, ignoring: %s", rvalue); return 0; } c->protect_home = h; } return 0; } int config_parse_protect_system( 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 k; assert(filename); assert(lvalue); assert(rvalue); assert(data); /* Our enum shall be a superset of booleans, hence first try * to parse as boolean, and then as enum */ k = parse_boolean(rvalue); if (k > 0) c->protect_system = PROTECT_SYSTEM_YES; else if (k == 0) c->protect_system = PROTECT_SYSTEM_NO; else { ProtectSystem s; s = protect_system_from_string(rvalue); if (s < 0) { log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse protect system value, ignoring: %s", rvalue); return 0; } c->protect_system = s; } return 0; } #define FOLLOW_MAX 8 static int open_follow(char **filename, FILE **_f, Set *names, char **_final) { char *id = NULL; unsigned c = 0; int fd, r; FILE *f; 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, UNIT_NAME_ANY)) { 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) { safe_close(fd); return -errno; } *_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 */ /* If the symlink name we are looking at is unit template, then we must search for instance of this template */ if (unit_name_is_valid(k, UNIT_NAME_TEMPLATE) && (*u)->instance) { _cleanup_free_ char *instance = NULL; r = unit_name_replace_instance(k, (*u)->instance, &instance); if (r < 0) return r; other = manager_get_unit((*u)->manager, instance); } else 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) { _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; int r; assert(u); assert(path); symlink_names = set_new(&string_hash_ops); 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) { filename = mfree(filename); if (r != -ENOENT) return r; } } else { char **p; STRV_FOREACH(p, u->manager->lookup_paths.search_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) break; filename = mfree(filename); /* ENOENT means that the file is missing or is a dangling symlink. * ENOTDIR means that one of paths we expect to be is a directory * is not a directory, we should just ignore that. * EACCES means that the directory or file permissions are wrong. */ if (r == -EACCES) log_debug_errno(r, "Cannot access \"%s\": %m", filename); else if (!IN_SET(r, -ENOENT, -ENOTDIR)) return r; /* Empty the symlink names for the next run */ set_clear_free(symlink_names); } } if (!filename) /* Hmm, no suitable file found? */ return 0; if (!unit_type_may_alias(u->type) && set_size(symlink_names) > 1) { log_unit_warning(u, "Unit type of %s does not support alias names, refusing loading via symlink.", u->id); return -ELOOP; } 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; u->fragment_mtime = 0; } else { u->load_state = UNIT_LOADED; u->fragment_mtime = timespec_load(&st.st_mtim); /* Now, parse the file contents */ r = config_parse(u->id, filename, f, UNIT_VTABLE(u)->sections, config_item_perf_lookup, load_fragment_gperf_lookup, false, true, false, u); if (r < 0) return r; } free(u->fragment_path); u->fragment_path = filename; filename = NULL; 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); if (u->transient) { u->load_state = UNIT_LOADED; return 0; } /* 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. */ u->fragment_path = mfree(u->fragment_path); } /* Look for a template */ if (u->load_state == UNIT_STUB && u->instance) { _cleanup_free_ char *k = NULL; r = unit_name_template(u->id, &k); if (r < 0) return r; 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; r = unit_name_template(t, &z); if (r < 0) return r; 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_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_iec_size, "SIZE" }, { config_parse_iec_uint64, "SIZE" }, { config_parse_si_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_exec_output, "OUTPUT" }, { config_parse_exec_input, "INPUT" }, { config_parse_log_facility, "FACILITY" }, { config_parse_log_level, "LEVEL" }, { config_parse_exec_secure_bits, "SECUREBITS" }, { config_parse_capability_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_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_namespace_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_emergency_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" }, { config_parse_address_families, "FAMILIES" }, { config_parse_restrict_namespaces, "NAMESPACES" }, #endif { config_parse_cpu_shares, "SHARES" }, { config_parse_cpu_weight, "WEIGHT" }, { config_parse_memory_limit, "LIMIT" }, { config_parse_device_allow, "DEVICE" }, { config_parse_device_policy, "POLICY" }, { config_parse_io_limit, "LIMIT" }, { config_parse_io_weight, "WEIGHT" }, { config_parse_io_device_weight, "DEVICEWEIGHT" }, { 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" }, { config_parse_personality, "PERSONALITY" }, }; 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; } }