0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
809 lines
24 KiB
C
809 lines
24 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#include "alloc-util.h"
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#include "cap-list.h"
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#include "conf-parser.h"
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#include "cpu-set-util.h"
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#include "hostname-util.h"
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#include "nspawn-network.h"
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#include "nspawn-settings.h"
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#include "parse-util.h"
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#include "process-util.h"
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#include "rlimit-util.h"
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#include "socket-util.h"
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#include "string-table.h"
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#include "string-util.h"
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#include "strv.h"
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#include "user-util.h"
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#include "util.h"
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int settings_load(FILE *f, const char *path, Settings **ret) {
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_cleanup_(settings_freep) Settings *s = NULL;
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int r;
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assert(path);
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assert(ret);
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s = new0(Settings, 1);
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if (!s)
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return -ENOMEM;
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s->start_mode = _START_MODE_INVALID;
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s->personality = PERSONALITY_INVALID;
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s->userns_mode = _USER_NAMESPACE_MODE_INVALID;
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s->resolv_conf = _RESOLV_CONF_MODE_INVALID;
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s->link_journal = _LINK_JOURNAL_INVALID;
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s->timezone = _TIMEZONE_MODE_INVALID;
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s->uid_shift = UID_INVALID;
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s->uid_range = UID_INVALID;
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s->no_new_privileges = -1;
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s->read_only = -1;
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s->volatile_mode = _VOLATILE_MODE_INVALID;
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s->userns_chown = -1;
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s->private_network = -1;
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s->network_veth = -1;
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r = config_parse(NULL, path, f,
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"Exec\0"
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"Network\0"
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"Files\0",
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config_item_perf_lookup, nspawn_gperf_lookup,
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CONFIG_PARSE_WARN,
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s);
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if (r < 0)
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return r;
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/* Make sure that if userns_mode is set, userns_chown is set to something appropriate, and vice versa. Either
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* both fields shall be initialized or neither. */
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if (s->userns_mode == USER_NAMESPACE_PICK)
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s->userns_chown = true;
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else if (s->userns_mode != _USER_NAMESPACE_MODE_INVALID && s->userns_chown < 0)
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s->userns_chown = false;
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if (s->userns_chown >= 0 && s->userns_mode == _USER_NAMESPACE_MODE_INVALID)
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s->userns_mode = USER_NAMESPACE_NO;
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*ret = TAKE_PTR(s);
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return 0;
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}
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Settings* settings_free(Settings *s) {
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if (!s)
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return NULL;
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strv_free(s->parameters);
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strv_free(s->environment);
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free(s->user);
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free(s->pivot_root_new);
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free(s->pivot_root_old);
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free(s->working_directory);
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strv_free(s->syscall_whitelist);
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strv_free(s->syscall_blacklist);
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rlimit_free_all(s->rlimit);
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free(s->hostname);
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s->cpuset = cpu_set_mfree(s->cpuset);
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strv_free(s->network_interfaces);
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strv_free(s->network_macvlan);
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strv_free(s->network_ipvlan);
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strv_free(s->network_veth_extra);
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free(s->network_bridge);
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free(s->network_zone);
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expose_port_free_all(s->expose_ports);
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custom_mount_free_all(s->custom_mounts, s->n_custom_mounts);
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return mfree(s);
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}
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bool settings_private_network(Settings *s) {
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assert(s);
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return
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s->private_network > 0 ||
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s->network_veth > 0 ||
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s->network_bridge ||
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s->network_zone ||
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s->network_interfaces ||
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s->network_macvlan ||
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s->network_ipvlan ||
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s->network_veth_extra;
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}
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bool settings_network_veth(Settings *s) {
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assert(s);
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return
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s->network_veth > 0 ||
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s->network_bridge ||
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s->network_zone;
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}
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DEFINE_CONFIG_PARSE_ENUM(config_parse_volatile_mode, volatile_mode, VolatileMode, "Failed to parse volatile mode");
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int config_parse_expose_port(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *s = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = expose_port_parse(&s->expose_ports, rvalue);
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if (r == -EEXIST) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Duplicate port specification, ignoring: %s", rvalue);
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return 0;
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}
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse host port %s: %m", rvalue);
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return 0;
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}
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return 0;
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}
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int config_parse_capability(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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uint64_t u = 0, *result = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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for (;;) {
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_cleanup_free_ char *word = NULL;
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int cap;
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r = extract_first_word(&rvalue, &word, NULL, 0);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract capability string, ignoring: %s", rvalue);
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return 0;
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}
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if (r == 0)
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break;
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cap = capability_from_name(word);
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if (cap < 0) {
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log_syntax(unit, LOG_ERR, filename, line, 0, "Failed to parse capability, ignoring: %s", word);
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continue;
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}
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u |= UINT64_C(1) << cap;
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}
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if (u == 0)
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return 0;
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*result |= u;
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return 0;
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}
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int config_parse_id128(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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sd_id128_t t, *result = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = sd_id128_from_string(rvalue, &t);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue);
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return 0;
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}
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*result = t;
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return 0;
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}
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int config_parse_pivot_root(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = pivot_root_parse(&settings->pivot_root_new, &settings->pivot_root_old, rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Invalid pivot root mount specification %s: %m", rvalue);
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return 0;
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}
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return 0;
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}
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int config_parse_bind(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = bind_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue, ltype);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Invalid bind mount specification %s: %m", rvalue);
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return 0;
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}
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return 0;
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}
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int config_parse_tmpfs(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = tmpfs_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Invalid temporary file system specification %s: %m", rvalue);
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return 0;
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}
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return 0;
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}
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int config_parse_overlay(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = overlay_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue, ltype);
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if (r < 0)
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log_syntax(unit, LOG_ERR, filename, line, r, "Invalid overlay file system specification %s, ignoring: %m", rvalue);
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return 0;
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}
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int config_parse_veth_extra(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = veth_extra_parse(&settings->network_veth_extra, rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Invalid extra virtual Ethernet link specification %s: %m", rvalue);
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return 0;
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}
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return 0;
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}
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int config_parse_network_zone(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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_cleanup_free_ char *j = NULL;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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j = strappend("vz-", rvalue);
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if (!ifname_valid(j)) {
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log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid network zone name %s, ignoring: %m", rvalue);
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return 0;
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}
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free_and_replace(settings->network_zone, j);
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return 0;
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}
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int config_parse_boot(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Boot= parameter %s, ignoring: %m", rvalue);
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return 0;
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}
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if (r > 0) {
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if (settings->start_mode == START_PID2)
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goto conflict;
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settings->start_mode = START_BOOT;
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} else {
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if (settings->start_mode == START_BOOT)
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goto conflict;
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if (settings->start_mode < 0)
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settings->start_mode = START_PID1;
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}
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return 0;
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conflict:
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log_syntax(unit, LOG_ERR, filename, line, r, "Conflicting Boot= or ProcessTwo= setting found. Ignoring.");
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return 0;
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}
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int config_parse_pid2(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = parse_boolean(rvalue);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse ProcessTwo= parameter %s, ignoring: %m", rvalue);
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return 0;
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}
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if (r > 0) {
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if (settings->start_mode == START_BOOT)
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goto conflict;
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settings->start_mode = START_PID2;
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} else {
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if (settings->start_mode == START_PID2)
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goto conflict;
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if (settings->start_mode < 0)
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settings->start_mode = START_PID1;
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}
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return 0;
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conflict:
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log_syntax(unit, LOG_ERR, filename, line, r, "Conflicting Boot= or ProcessTwo= setting found. Ignoring.");
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return 0;
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}
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int config_parse_private_users(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
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void *userdata) {
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Settings *settings = data;
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int r;
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assert(filename);
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assert(lvalue);
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assert(rvalue);
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r = parse_boolean(rvalue);
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if (r == 0) {
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/* no: User namespacing off */
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settings->userns_mode = USER_NAMESPACE_NO;
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settings->uid_shift = UID_INVALID;
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settings->uid_range = UINT32_C(0x10000);
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} else if (r > 0) {
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/* yes: User namespacing on, UID range is read from root dir */
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settings->userns_mode = USER_NAMESPACE_FIXED;
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settings->uid_shift = UID_INVALID;
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settings->uid_range = UINT32_C(0x10000);
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} else if (streq(rvalue, "pick")) {
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/* pick: User namespacing on, UID range is picked randomly */
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settings->userns_mode = USER_NAMESPACE_PICK;
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settings->uid_shift = UID_INVALID;
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settings->uid_range = UINT32_C(0x10000);
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} else {
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const char *range, *shift;
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uid_t sh, rn;
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/* anything else: User namespacing on, UID range is explicitly configured */
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range = strchr(rvalue, ':');
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if (range) {
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shift = strndupa(rvalue, range - rvalue);
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range++;
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r = safe_atou32(range, &rn);
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if (r < 0 || rn <= 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "UID/GID range invalid, ignoring: %s", range);
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return 0;
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}
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} else {
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shift = rvalue;
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rn = UINT32_C(0x10000);
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}
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r = parse_uid(shift, &sh);
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if (r < 0) {
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log_syntax(unit, LOG_ERR, filename, line, r, "UID/GID shift invalid, ignoring: %s", range);
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return 0;
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}
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settings->userns_mode = USER_NAMESPACE_FIXED;
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settings->uid_shift = sh;
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settings->uid_range = rn;
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}
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return 0;
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}
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int config_parse_syscall_filter(
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const char *unit,
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const char *filename,
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unsigned line,
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const char *section,
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unsigned section_line,
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const char *lvalue,
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int ltype,
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const char *rvalue,
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void *data,
|
|
void *userdata) {
|
|
|
|
Settings *settings = data;
|
|
bool negative;
|
|
const char *items;
|
|
int r;
|
|
|
|
assert(filename);
|
|
assert(lvalue);
|
|
assert(rvalue);
|
|
|
|
negative = rvalue[0] == '~';
|
|
items = negative ? rvalue + 1 : rvalue;
|
|
|
|
for (;;) {
|
|
_cleanup_free_ char *word = NULL;
|
|
|
|
r = extract_first_word(&items, &word, NULL, 0);
|
|
if (r == 0)
|
|
break;
|
|
if (r == -ENOMEM)
|
|
return log_oom();
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse SystemCallFilter= parameter %s, ignoring: %m", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
if (negative)
|
|
r = strv_extend(&settings->syscall_blacklist, word);
|
|
else
|
|
r = strv_extend(&settings->syscall_whitelist, word);
|
|
if (r < 0)
|
|
return log_oom();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_hostname(
|
|
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 **s = data;
|
|
|
|
assert(rvalue);
|
|
assert(s);
|
|
|
|
if (!hostname_is_valid(rvalue, false)) {
|
|
log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid hostname, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
if (free_and_strdup(s, empty_to_null(rvalue)) < 0)
|
|
return log_oom();
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_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) {
|
|
|
|
Settings *settings = data;
|
|
int oa, r;
|
|
|
|
assert(rvalue);
|
|
assert(settings);
|
|
|
|
if (isempty(rvalue)) {
|
|
settings->oom_score_adjust_set = false;
|
|
return 0;
|
|
}
|
|
|
|
r = parse_oom_score_adjust(rvalue, &oa);
|
|
if (r == -ERANGE) {
|
|
log_syntax(unit, LOG_ERR, filename, line, r, "OOM score adjust value out of range, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse the OOM score adjust value, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
settings->oom_score_adjust = oa;
|
|
settings->oom_score_adjust_set = true;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_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) {
|
|
|
|
_cleanup_cpu_free_ cpu_set_t *cpuset = NULL;
|
|
Settings *settings = data;
|
|
int ncpus;
|
|
|
|
assert(rvalue);
|
|
assert(settings);
|
|
|
|
ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue);
|
|
if (ncpus < 0)
|
|
return ncpus;
|
|
|
|
if (ncpus == 0) {
|
|
/* An empty assignment resets the CPU list */
|
|
settings->cpuset = cpu_set_mfree(settings->cpuset);
|
|
settings->cpuset_ncpus = 0;
|
|
return 0;
|
|
}
|
|
|
|
if (!settings->cpuset) {
|
|
settings->cpuset = TAKE_PTR(cpuset);
|
|
settings->cpuset_ncpus = (unsigned) ncpus;
|
|
return 0;
|
|
}
|
|
|
|
if (settings->cpuset_ncpus < (unsigned) ncpus) {
|
|
CPU_OR_S(CPU_ALLOC_SIZE(settings->cpuset_ncpus), cpuset, settings->cpuset, cpuset);
|
|
CPU_FREE(settings->cpuset);
|
|
settings->cpuset = TAKE_PTR(cpuset);
|
|
settings->cpuset_ncpus = (unsigned) ncpus;
|
|
return 0;
|
|
}
|
|
|
|
CPU_OR_S(CPU_ALLOC_SIZE((unsigned) ncpus), settings->cpuset, settings->cpuset, cpuset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_CONFIG_PARSE_ENUM(config_parse_resolv_conf, resolv_conf_mode, ResolvConfMode, "Failed to parse resolv.conf mode");
|
|
|
|
static const char *const resolv_conf_mode_table[_RESOLV_CONF_MODE_MAX] = {
|
|
[RESOLV_CONF_OFF] = "off",
|
|
[RESOLV_CONF_COPY_HOST] = "copy-host",
|
|
[RESOLV_CONF_COPY_STATIC] = "copy-static",
|
|
[RESOLV_CONF_BIND_HOST] = "bind-host",
|
|
[RESOLV_CONF_BIND_STATIC] = "bind-static",
|
|
[RESOLV_CONF_DELETE] = "delete",
|
|
[RESOLV_CONF_AUTO] = "auto",
|
|
};
|
|
|
|
DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(resolv_conf_mode, ResolvConfMode, RESOLV_CONF_AUTO);
|
|
|
|
int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try) {
|
|
assert(s);
|
|
assert(ret_mode);
|
|
assert(ret_try);
|
|
|
|
if (streq(s, "auto")) {
|
|
*ret_mode = LINK_AUTO;
|
|
*ret_try = false;
|
|
} else if (streq(s, "no")) {
|
|
*ret_mode = LINK_NO;
|
|
*ret_try = false;
|
|
} else if (streq(s, "guest")) {
|
|
*ret_mode = LINK_GUEST;
|
|
*ret_try = false;
|
|
} else if (streq(s, "host")) {
|
|
*ret_mode = LINK_HOST;
|
|
*ret_try = false;
|
|
} else if (streq(s, "try-guest")) {
|
|
*ret_mode = LINK_GUEST;
|
|
*ret_try = true;
|
|
} else if (streq(s, "try-host")) {
|
|
*ret_mode = LINK_HOST;
|
|
*ret_try = true;
|
|
} else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int config_parse_link_journal(
|
|
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) {
|
|
|
|
Settings *settings = data;
|
|
int r;
|
|
|
|
assert(rvalue);
|
|
assert(settings);
|
|
|
|
r = parse_link_journal(rvalue, &settings->link_journal, &settings->link_journal_try);
|
|
if (r < 0) {
|
|
log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse link journal mode, ignoring: %s", rvalue);
|
|
return 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
DEFINE_CONFIG_PARSE_ENUM(config_parse_timezone, timezone_mode, TimezoneMode, "Failed to parse timezone mode");
|
|
|
|
static const char *const timezone_mode_table[_TIMEZONE_MODE_MAX] = {
|
|
[TIMEZONE_OFF] = "off",
|
|
[TIMEZONE_COPY] = "copy",
|
|
[TIMEZONE_BIND] = "bind",
|
|
[TIMEZONE_SYMLINK] = "symlink",
|
|
[TIMEZONE_DELETE] = "delete",
|
|
[TIMEZONE_AUTO] = "auto",
|
|
};
|
|
|
|
DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(timezone_mode, TimezoneMode, TIMEZONE_AUTO);
|