diff options
Diffstat (limited to 'src/grp-system/libcore/src/load-fragment.c')
| -rw-r--r-- | src/grp-system/libcore/src/load-fragment.c | 4389 |
1 files changed, 4389 insertions, 0 deletions
diff --git a/src/grp-system/libcore/src/load-fragment.c b/src/grp-system/libcore/src/load-fragment.c new file mode 100644 index 0000000000..927615360e --- /dev/null +++ b/src/grp-system/libcore/src/load-fragment.c @@ -0,0 +1,4389 @@ +/*** + 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 <http://www.gnu.org/licenses/>. +***/ + +#include <errno.h> +#include <fcntl.h> + +#include <linux/fs.h> +#include <linux/oom.h> +#ifdef HAVE_SECCOMP +#include <seccomp.h> +#endif +#include <sched.h> +#include <string.h> +#include <sys/resource.h> +#include <sys/stat.h> + +#include "core/cgroup.h" +#include "core/load-fragment.h" +#include "sd-bus/bus-error.h" +#include "sd-bus/bus-internal.h" +#include "sd-bus/bus-util.h" +#include "systemd-basic/af-list.h" +#include "systemd-basic/alloc-util.h" +#include "systemd-basic/cap-list.h" +#include "systemd-basic/capability-util.h" +#include "systemd-basic/cpu-set-util.h" +#include "systemd-basic/env-util.h" +#include "systemd-basic/errno-list.h" +#include "systemd-basic/escape.h" +#include "systemd-basic/fd-util.h" +#include "systemd-basic/fs-util.h" +#include "systemd-basic/ioprio.h" +#include "systemd-basic/log.h" +#include "systemd-basic/missing.h" +#include "systemd-basic/parse-util.h" +#include "systemd-basic/path-util.h" +#include "systemd-basic/process-util.h" +#include "systemd-basic/rlimit-util.h" +#include "systemd-shared/conf-parser.h" +#ifdef HAVE_SECCOMP +#include "systemd-shared/seccomp-util.h" +#endif +#include "core/unit.h" +#include "systemd-basic/securebits.h" +#include "systemd-basic/signal-util.h" +#include "systemd-basic/stat-util.h" +#include "systemd-basic/string-util.h" +#include "systemd-basic/strv.h" +#include "systemd-basic/unit-name.h" +#include "systemd-basic/user-util.h" +#include "systemd-basic/utf8.h" +#include "systemd-basic/web-util.h" + +#include "unit-printf.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; + const char *word, *state; + Unit *u = userdata; + size_t l; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(u); + + FOREACH_WORD_QUOTED(word, l, rvalue, state) { + _cleanup_free_ char *k = NULL; + char t[l+1]; + + memcpy(t, word, l); + t[l] = 0; + + r = unit_full_printf(u, t, &k); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve unit specifiers on %s, ignoring: %m", t); + 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 %s is not absolute, ignoring: %m", k); + return 0; + } + + path_kill_slashes(k); + + r = strv_push(x, k); + if (r < 0) + return log_oom(); + + k = NULL; + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid syntax, ignoring."); + + return 0; +} + +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, WHITESPACE, 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, WHITESPACE, 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; + size_t l; + const char *word, *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(word, l, rvalue, state) { + if (first_word(word, "keep-caps")) + c->secure_bits |= 1<<SECURE_KEEP_CAPS; + else if (first_word(word, "keep-caps-locked")) + c->secure_bits |= 1<<SECURE_KEEP_CAPS_LOCKED; + else if (first_word(word, "no-setuid-fixup")) + c->secure_bits |= 1<<SECURE_NO_SETUID_FIXUP; + else if (first_word(word, "no-setuid-fixup-locked")) + c->secure_bits |= 1<<SECURE_NO_SETUID_FIXUP_LOCKED; + else if (first_word(word, "noroot")) + c->secure_bits |= 1<<SECURE_NOROOT; + else if (first_word(word, "noroot-locked")) + c->secure_bits |= 1<<SECURE_NOROOT_LOCKED; + else { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse secure bits, ignoring: %s", rvalue); + return 0; + } + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid syntax, garbage at the end, ignoring."); + + return 0; +} + +int config_parse_capability_set( + 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 *capability_set = data; + uint64_t sum = 0, initial = 0; + bool invert = false; + const char *p; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + if (rvalue[0] == '~') { + invert = true; + rvalue++; + } + + if (strcmp(lvalue, "CapabilityBoundingSet") == 0) + initial = CAP_ALL; /* initialized to all bits on */ + /* else "AmbientCapabilities" initialized to all bits off */ + + p = rvalue; + for (;;) { + _cleanup_free_ char *word = NULL; + int cap, r; + + r = extract_first_word(&p, &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, "Failed to parse word, ignoring: %s", rvalue); + break; + } + + cap = capability_from_name(word); + if (cap < 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse capability in bounding/ambient set, ignoring: %s", word); + continue; + } + + sum |= ((uint64_t) UINT64_C(1)) << (uint64_t) cap; + } + + sum = invert ? ~sum : sum; + + if (sum == 0 || *capability_set == initial) + /* "" or uninitialized data -> 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, WHITESPACE, 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 *word, *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 */ + *env = strv_free(*env); + 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); + return 0; + } + } + + if (!k) { + k = strdup(rvalue); + if (!k) + return log_oom(); + } + + FOREACH_WORD_QUOTED(word, l, k, state) { + _cleanup_free_ char *n = NULL; + char **x; + + r = cunescape_length(word, l, 0, &n); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Couldn't unescape assignment, ignoring: %s", rvalue); + continue; + } + + if (!env_assignment_is_valid(n)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid environment assignment, ignoring: %s", rvalue); + continue; + } + + x = strv_env_set(*env, n); + if (!x) + return log_oom(); + + strv_free(*env); + *env = x; + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring."); + + return 0; +} + +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, WHITESPACE, 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 *word, *state; + size_t l; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + FOREACH_WORD_QUOTED(word, l, rvalue, state) { + int r; + _cleanup_free_ char *n; + + n = strndup(word, l); + if (!n) + return log_oom(); + + if (!utf8_is_valid(n)) { + log_syntax_invalid_utf8(unit, LOG_ERR, filename, line, 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; + } + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring."); + + 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 */ + 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 *word, *state; + size_t l; + int r; + + if (isempty(rvalue)) { + *archs = set_free(*archs); + return 0; + } + + r = set_ensure_allocated(archs, NULL); + if (r < 0) + return log_oom(); + + FOREACH_WORD_QUOTED(word, l, rvalue, state) { + _cleanup_free_ char *t = NULL; + uint32_t a; + + t = strndup(word, l); + if (!t) + return log_oom(); + + r = seccomp_arch_from_string(t, &a); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse system call architecture, ignoring: %s", t); + continue; + } + + r = set_put(*archs, UINT32_TO_PTR(a + 1)); + if (r == 0) + continue; + if (r < 0) + return log_oom(); + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring."); + + 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, 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 *word, *state; + size_t l; + 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; + } + + FOREACH_WORD_QUOTED(word, l, rvalue, state) { + _cleanup_free_ char *t = NULL; + int af; + + t = strndup(word, l); + if (!t) + return log_oom(); + + af = af_from_name(t); + if (af <= 0) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse address family, ignoring: %s", t); + continue; + } + + /* If we previously wanted to forbid an address family and now + * we want to allow it, then remove it from the list + */ + if (!invert == c->address_families_whitelist) { + r = set_put(c->address_families, INT_TO_PTR(af)); + if (r == 0) + continue; + if (r < 0) + return log_oom(); + } else + set_remove(c->address_families, INT_TO_PTR(af)); + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring."); + + 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 *word, *state; + size_t l; + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + assert(data); + + if (isempty(rvalue)) { + /* Empty assignment resets the list */ + *rt = strv_free(*rt); + return 0; + } + + FOREACH_WORD_QUOTED(word, l, rvalue, state) { + _cleanup_free_ char *t = NULL, *n = NULL; + + t = strndup(word, l); + if (!t) + return log_oom(); + + r = unit_name_printf(u, t, &n); + if (r < 0) { + log_syntax(unit, LOG_ERR, filename, line, r, "Failed to resolve specifiers, ignoring: %m"); + continue; + } + + if (!filename_is_valid(n)) { + log_syntax(unit, LOG_ERR, filename, line, 0, "Runtime directory is not valid, ignoring assignment: %s", rvalue); + continue; + } + + r = strv_push(rt, n); + if (r < 0) + return log_oom(); + + n = NULL; + } + if (!isempty(state)) + log_syntax(unit, LOG_ERR, filename, line, 0, "Trailing garbage, ignoring."); + + return 0; +} + +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" }, +#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; + } +} |