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-rw-r--r--src/load-fragment.c1483
1 files changed, 1483 insertions, 0 deletions
diff --git a/src/load-fragment.c b/src/load-fragment.c
new file mode 100644
index 0000000000..148a579d99
--- /dev/null
+++ b/src/load-fragment.c
@@ -0,0 +1,1483 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <linux/oom.h>
+#include <assert.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sched.h>
+#include <sys/prctl.h>
+#include <sys/mount.h>
+#include <linux/fs.h>
+
+#include "unit.h"
+#include "strv.h"
+#include "conf-parser.h"
+#include "load-fragment.h"
+#include "log.h"
+#include "ioprio.h"
+#include "securebits.h"
+#include "missing.h"
+#include "unit-name.h"
+
+#define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg) \
+ static int function( \
+ const char *filename, \
+ unsigned line, \
+ const char *section, \
+ const char *lvalue, \
+ const char *rvalue, \
+ void *data, \
+ void *userdata) { \
+ \
+ type *i = data, x; \
+ \
+ assert(filename); \
+ assert(lvalue); \
+ assert(rvalue); \
+ assert(data); \
+ \
+ if ((x = name##_from_string(rvalue)) < 0) { \
+ log_error("[%s:%u] " msg ": %s", filename, line, rvalue); \
+ return -EBADMSG; \
+ } \
+ \
+ *i = x; \
+ \
+ return 0; \
+ }
+
+static int config_parse_deps(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ UnitDependency d = PTR_TO_UINT(data);
+ Unit *u = userdata;
+ char *w;
+ size_t l;
+ char *state;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ char *t, *k;
+ int r;
+
+ if (!(t = strndup(w, l)))
+ return -ENOMEM;
+
+ k = unit_name_printf(u, t);
+ free(t);
+
+ if (!k)
+ return -ENOMEM;
+
+ r = unit_add_dependency_by_name(u, d, k, NULL, true);
+ free(k);
+
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int config_parse_names(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Unit *u = userdata;
+ char *w;
+ size_t l;
+ char *state;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ char *t, *k;
+ int r;
+
+ if (!(t = strndup(w, l)))
+ return -ENOMEM;
+
+ k = unit_name_printf(u, t);
+ free(t);
+
+ if (!k)
+ return -ENOMEM;
+
+ r = unit_merge_by_name(u, k);
+ free(k);
+
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int config_parse_description(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Unit *u = userdata;
+ char *k;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (!(k = unit_full_printf(u, rvalue)))
+ return -ENOMEM;
+
+ free(u->meta.description);
+
+ if (*k)
+ u->meta.description = k;
+ else {
+ free(k);
+ u->meta.description = NULL;
+ }
+
+ return 0;
+}
+
+static int config_parse_listen(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ int r;
+ SocketPort *p;
+ Socket *s;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ s = (Socket*) data;
+
+ if (!(p = new0(SocketPort, 1)))
+ return -ENOMEM;
+
+ if (streq(lvalue, "ListenFIFO")) {
+ p->type = SOCKET_FIFO;
+
+ if (!(p->path = strdup(rvalue))) {
+ free(p);
+ return -ENOMEM;
+ }
+ } else {
+ p->type = SOCKET_SOCKET;
+
+ if ((r = socket_address_parse(&p->address, rvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse address value: %s", filename, line, rvalue);
+ free(p);
+ return r;
+ }
+
+ 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) {
+ free(p);
+ return -EPROTONOSUPPORT;
+ }
+ }
+
+ p->fd = -1;
+ LIST_PREPEND(SocketPort, port, s->ports, p);
+
+ return 0;
+}
+
+static int config_parse_socket_bind(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ int r;
+ Socket *s;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ s = (Socket*) data;
+
+ if ((r = parse_boolean(rvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse bind IPv6 only value: %s", filename, line, rvalue);
+ return r;
+ }
+
+ s->bind_ipv6_only = r ? SOCKET_ADDRESS_IPV6_ONLY : SOCKET_ADDRESS_BOTH;
+
+ return 0;
+}
+
+static int config_parse_nice(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ int priority, r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((r = safe_atoi(rvalue, &priority)) < 0) {
+ log_error("[%s:%u] Failed to parse nice priority: %s", filename, line, rvalue);
+ return r;
+ }
+
+ if (priority < PRIO_MIN || priority >= PRIO_MAX) {
+ log_error("[%s:%u] Nice priority out of range: %s", filename, line, rvalue);
+ return -ERANGE;
+ }
+
+ c->nice = priority;
+ c->nice_set = false;
+
+ return 0;
+}
+
+static int config_parse_oom_adjust(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ int oa, r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((r = safe_atoi(rvalue, &oa)) < 0) {
+ log_error("[%s:%u] Failed to parse OOM adjust value: %s", filename, line, rvalue);
+ return r;
+ }
+
+ if (oa < OOM_DISABLE || oa > OOM_ADJUST_MAX) {
+ log_error("[%s:%u] OOM adjust value out of range: %s", filename, line, rvalue);
+ return -ERANGE;
+ }
+
+ c->oom_adjust = oa;
+ c->oom_adjust_set = true;
+
+ return 0;
+}
+
+static int config_parse_mode(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ mode_t *m = data;
+ long l;
+ char *x = NULL;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ errno = 0;
+ l = strtol(rvalue, &x, 8);
+ if (!x || *x || errno) {
+ log_error("[%s:%u] Failed to parse mode value: %s", filename, line, rvalue);
+ return errno ? -errno : -EINVAL;
+ }
+
+ if (l < 0000 || l > 07777) {
+ log_error("[%s:%u] mode value out of range: %s", filename, line, rvalue);
+ return -ERANGE;
+ }
+
+ *m = (mode_t) l;
+ return 0;
+}
+
+static int config_parse_exec(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecCommand **e = data, *nce = NULL;
+ char **n;
+ char *w;
+ unsigned k;
+ size_t l;
+ char *state;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ k = 0;
+ FOREACH_WORD_QUOTED(w, l, rvalue, state)
+ k++;
+
+ if (!(n = new(char*, k+1)))
+ return -ENOMEM;
+
+ k = 0;
+ FOREACH_WORD_QUOTED(w, l, rvalue, state)
+ if (!(n[k++] = strndup(w, l)))
+ goto fail;
+
+ n[k] = NULL;
+
+ if (!n[0] || !path_is_absolute(n[0])) {
+ log_error("[%s:%u] Invalid executable path in command line: %s", filename, line, rvalue);
+ strv_free(n);
+ return -EINVAL;
+ }
+
+ if (!(nce = new0(ExecCommand, 1)))
+ goto fail;
+
+ nce->argv = n;
+ if (!(nce->path = strdup(n[0])))
+ goto fail;
+
+ exec_command_append_list(e, nce);
+
+ return 0;
+
+fail:
+ for (; k > 0; k--)
+ free(n[k-1]);
+ free(n);
+
+ free(nce);
+
+ return -ENOMEM;
+}
+
+static int config_parse_usec(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ usec_t *usec = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((r = parse_usec(rvalue, usec)) < 0) {
+ log_error("[%s:%u] Failed to parse time value: %s", filename, line, rvalue);
+ return r;
+ }
+
+ 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");
+
+static int config_parse_bindtodevice(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ 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 (!(n = strdup(rvalue)))
+ return -ENOMEM;
+ } else
+ n = NULL;
+
+ free(s->bind_to_device);
+ s->bind_to_device = n;
+
+ return 0;
+}
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_output, exec_output, ExecOutput, "Failed to parse output specifier");
+DEFINE_CONFIG_PARSE_ENUM(config_parse_input, exec_input, ExecInput, "Failed to parse input specifier");
+
+static int config_parse_facility(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+
+ int *o = data, x;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((x = log_facility_from_string(rvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse log facility: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ *o = LOG_MAKEPRI(x, LOG_PRI(*o));
+
+ return 0;
+}
+
+static int config_parse_level(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+
+ int *o = data, x;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((x = log_level_from_string(rvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse log level: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ *o = LOG_MAKEPRI(LOG_FAC(*o), x);
+ return 0;
+}
+
+static int config_parse_io_class(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ int x;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((x = ioprio_class_from_string(rvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse IO scheduling class: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ c->ioprio = IOPRIO_PRIO_VALUE(x, IOPRIO_PRIO_DATA(c->ioprio));
+ c->ioprio_set = true;
+
+ return 0;
+}
+
+static int config_parse_io_priority(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ int i;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (safe_atoi(rvalue, &i) < 0 || i < 0 || i >= IOPRIO_BE_NR) {
+ log_error("[%s:%u] Failed to parse io priority: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ c->ioprio = IOPRIO_PRIO_VALUE(IOPRIO_PRIO_CLASS(c->ioprio), i);
+ c->ioprio_set = true;
+
+ return 0;
+}
+
+static int config_parse_cpu_sched_policy(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+
+ ExecContext *c = data;
+ int x;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((x = sched_policy_from_string(rvalue)) < 0) {
+ log_error("[%s:%u] Failed to parse CPU scheduling policy: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ c->cpu_sched_policy = x;
+ c->cpu_sched_set = true;
+
+ return 0;
+}
+
+static int config_parse_cpu_sched_prio(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ int i;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ /* On Linux RR/FIFO have the same range */
+ if (safe_atoi(rvalue, &i) < 0 || i < sched_get_priority_min(SCHED_RR) || i > sched_get_priority_max(SCHED_RR)) {
+ log_error("[%s:%u] Failed to parse CPU scheduling priority: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ c->cpu_sched_priority = i;
+ c->cpu_sched_set = true;
+
+ return 0;
+}
+
+static int config_parse_cpu_affinity(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ char *w;
+ size_t l;
+ char *state;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ char *t;
+ int r;
+ unsigned cpu;
+
+ if (!(t = strndup(w, l)))
+ return -ENOMEM;
+
+ r = safe_atou(t, &cpu);
+ free(t);
+
+ if (r < 0 || cpu >= CPU_SETSIZE) {
+ log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ CPU_SET(cpu, &c->cpu_affinity);
+ }
+
+ c->cpu_affinity_set = true;
+
+ return 0;
+}
+
+static int config_parse_capabilities(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ cap_t cap;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if (!(cap = cap_from_text(rvalue))) {
+ if (errno == ENOMEM)
+ return -ENOMEM;
+
+ log_error("[%s:%u] Failed to parse capabilities: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ if (c->capabilities)
+ cap_free(c->capabilities);
+ c->capabilities = cap;
+
+ return 0;
+}
+
+static int config_parse_secure_bits(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ char *w;
+ size_t l;
+ char *state;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ if (first_word(w, "keep-caps"))
+ c->secure_bits |= SECURE_KEEP_CAPS;
+ else if (first_word(w, "keep-caps-locked"))
+ c->secure_bits |= SECURE_KEEP_CAPS_LOCKED;
+ else if (first_word(w, "no-setuid-fixup"))
+ c->secure_bits |= SECURE_NO_SETUID_FIXUP;
+ else if (first_word(w, "no-setuid-fixup-locked"))
+ c->secure_bits |= SECURE_NO_SETUID_FIXUP_LOCKED;
+ else if (first_word(w, "noroot"))
+ c->secure_bits |= SECURE_NOROOT;
+ else if (first_word(w, "noroot-locked"))
+ c->secure_bits |= SECURE_NOROOT_LOCKED;
+ else {
+ log_error("[%s:%u] Failed to parse secure bits: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+ }
+
+ return 0;
+}
+
+static int config_parse_bounding_set(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ char *w;
+ size_t l;
+ char *state;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ char *t;
+ int r;
+ cap_value_t cap;
+
+ if (!(t = strndup(w, l)))
+ return -ENOMEM;
+
+ r = cap_from_name(t, &cap);
+ free(t);
+
+ if (r < 0) {
+ log_error("[%s:%u] Failed to parse capability bounding set: %s", filename, line, rvalue);
+ return -EBADMSG;
+ }
+
+ c->capability_bounding_set_drop |= 1 << cap;
+ }
+
+ return 0;
+}
+
+static int config_parse_timer_slack_ns(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ unsigned long u;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((r = safe_atolu(rvalue, &u)) < 0) {
+ log_error("[%s:%u] Failed to parse time slack value: %s", filename, line, rvalue);
+ return r;
+ }
+
+ c->timer_slack_ns = u;
+
+ return 0;
+}
+
+static int config_parse_limit(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ struct rlimit **rl = data;
+ unsigned long long u;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((r = safe_atollu(rvalue, &u)) < 0) {
+ log_error("[%s:%u] Failed to parse resource value: %s", filename, line, rvalue);
+ return r;
+ }
+
+ if (!*rl)
+ if (!(*rl = new(struct rlimit, 1)))
+ return -ENOMEM;
+
+ (*rl)->rlim_cur = (*rl)->rlim_max = (rlim_t) u;
+ return 0;
+}
+
+static int config_parse_cgroup(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ Unit *u = userdata;
+ char *w;
+ size_t l;
+ char *state;
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ char *t;
+ int r;
+
+ if (!(t = strndup(w, l)))
+ return -ENOMEM;
+
+ r = unit_add_cgroup_from_text(u, t);
+ free(t);
+
+ if (r < 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int config_parse_sysv_priority(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ int *priority = data;
+ int r, i;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ if ((r = safe_atoi(rvalue, &i)) < 0 || i < 0) {
+ log_error("[%s:%u] Failed to parse SysV start priority: %s", filename, line, rvalue);
+ return r;
+ }
+
+ *priority = (int) i;
+ return 0;
+}
+
+DEFINE_CONFIG_PARSE_ENUM(config_parse_kill_mode, kill_mode, KillMode, "Failed to parse kill mode");
+
+static int config_parse_mount_flags(
+ const char *filename,
+ unsigned line,
+ const char *section,
+ const char *lvalue,
+ const char *rvalue,
+ void *data,
+ void *userdata) {
+
+ ExecContext *c = data;
+ char *w;
+ size_t l;
+ char *state;
+ unsigned long flags = 0;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ FOREACH_WORD(w, l, rvalue, state) {
+ if (strncmp(w, "shared", l) == 0)
+ flags |= MS_SHARED;
+ else if (strncmp(w, "slave", l) == 0)
+ flags |= MS_SLAVE;
+ else if (strncmp(w, "private", l) == 0)
+ flags |= MS_PRIVATE;
+ else {
+ log_error("[%s:%u] Failed to parse mount flags: %s", filename, line, rvalue);
+ return -EINVAL;
+ }
+ }
+
+ c->mount_flags = flags;
+ return 0;
+}
+
+#define FOLLOW_MAX 8
+
+static int open_follow(char **filename, FILE **_f, Set *names, char **_final) {
+ unsigned c = 0;
+ int fd, r;
+ FILE *f;
+ char *id = NULL;
+
+ assert(filename);
+ assert(*filename);
+ assert(_f);
+ assert(names);
+
+ /* This will update the filename pointer if the loaded file is
+ * reached by a symlink. The old string will be freed. */
+
+ for (;;) {
+ char *target, *k, *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 */
+ name = file_name_from_path(*filename);
+ if (!(id = set_get(names, name))) {
+
+ if (!(id = strdup(name)))
+ return -ENOMEM;
+
+ if ((r = set_put(names, id)) < 0) {
+ free(id);
+ return r;
+ }
+ }
+
+ /* Try to open the file name, but don't if its a symlink */
+ if ((fd = open(*filename, O_RDONLY|O_CLOEXEC|O_NOCTTY|O_NOFOLLOW)) >= 0)
+ break;
+
+ if (errno != ELOOP)
+ return -errno;
+
+ /* Hmm, so this is a symlink. Let's read the name, and follow it manually */
+ if ((r = readlink_malloc(*filename, &target)) < 0)
+ return r;
+
+ k = file_in_same_dir(*filename, target);
+ free(target);
+
+ if (!k)
+ return -ENOMEM;
+
+ free(*filename);
+ *filename = k;
+ }
+
+ if (!(f = fdopen(fd, "r"))) {
+ r = -errno;
+ close_nointr_nofail(fd);
+ return r;
+ }
+
+ *_f = f;
+ *_final = id;
+ return 0;
+}
+
+static int merge_by_names(Unit **u, Set *names, const char *id) {
+ char *k;
+ int r;
+
+ assert(u);
+ assert(*u);
+ assert(names);
+
+ /* Let's try to add in all symlink names we found */
+ while ((k = set_steal_first(names))) {
+
+ /* First try to merge in the other name into our
+ * unit */
+ if ((r = unit_merge_by_name(*u, k)) < 0) {
+ Unit *other;
+
+ /* Hmm, we couldn't merge the other unit into
+ * ours? Then let's try it the other way
+ * round */
+
+ other = manager_get_unit((*u)->meta.manager, k);
+ free(k);
+
+ if (other)
+ if ((r = unit_merge(other, *u)) >= 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 void dump_items(FILE *f, const ConfigItem *items) {
+ const ConfigItem *i;
+ const char *prev_section = NULL;
+ bool not_first = false;
+
+ struct {
+ ConfigParserCallback callback;
+ const char *rvalue;
+ } table[] = {
+ { config_parse_int, "INTEGER" },
+ { config_parse_unsigned, "UNSIGNED" },
+ { config_parse_size, "SIZE" },
+ { config_parse_bool, "BOOLEAN" },
+ { config_parse_string, "STRING" },
+ { config_parse_path, "PATH" },
+ { config_parse_strv, "STRING [...]" },
+ { config_parse_nice, "NICE" },
+ { config_parse_oom_adjust, "OOMADJUST" },
+ { config_parse_io_class, "IOCLASS" },
+ { config_parse_io_priority, "IOPRIORITY" },
+ { config_parse_cpu_sched_policy, "CPUSCHEDPOLICY" },
+ { config_parse_cpu_sched_prio, "CPUSCHEDPRIO" },
+ { config_parse_cpu_affinity, "CPUAFFINITY" },
+ { config_parse_mode, "MODE" },
+ { config_parse_output, "OUTPUT" },
+ { config_parse_input, "INPUT" },
+ { config_parse_facility, "FACILITY" },
+ { config_parse_level, "LEVEL" },
+ { config_parse_capabilities, "CAPABILITIES" },
+ { config_parse_secure_bits, "SECUREBITS" },
+ { config_parse_bounding_set, "BOUNDINGSET" },
+ { config_parse_timer_slack_ns, "TIMERSLACK" },
+ { config_parse_limit, "LIMIT" },
+ { config_parse_cgroup, "CGROUP [...]" },
+ { config_parse_deps, "UNIT [...]" },
+ { config_parse_names, "UNIT [...]" },
+ { config_parse_exec, "PATH [ARGUMENT [...]]" },
+ { config_parse_service_type, "SERVICETYPE" },
+ { config_parse_service_restart, "SERVICERESTART" },
+ { config_parse_sysv_priority, "SYSVPRIORITY" },
+ { config_parse_kill_mode, "KILLMODE" },
+ { config_parse_listen, "SOCKET [...]" },
+ { config_parse_socket_bind, "SOCKETBIND" },
+ { config_parse_bindtodevice, "NETWORKINTERFACE" },
+ { config_parse_usec, "SECONDS" },
+ { config_parse_path_strv, "PATH [...]" },
+ { config_parse_mount_flags, "MOUNTFLAG [...]" },
+ { config_parse_description, "DESCRIPTION" },
+ };
+
+ assert(f);
+ assert(items);
+
+ for (i = items; i->lvalue; i++) {
+ unsigned j;
+ const char *rvalue = "OTHER";
+
+ if (!streq_ptr(i->section, prev_section)) {
+ if (!not_first)
+ not_first = true;
+ else
+ fputc('\n', f);
+
+ fprintf(f, "[%s]\n", i->section);
+ prev_section = i->section;
+ }
+
+ for (j = 0; j < ELEMENTSOF(table); j++)
+ if (i->parse == table[j].callback) {
+ rvalue = table[j].rvalue;
+ break;
+ }
+
+ fprintf(f, "%s=%s\n", i->lvalue, rvalue);
+ }
+}
+
+static int load_from_path(Unit *u, const char *path) {
+
+ static const char* const section_table[_UNIT_TYPE_MAX] = {
+ [UNIT_SERVICE] = "Service",
+ [UNIT_TIMER] = "Timer",
+ [UNIT_SOCKET] = "Socket",
+ [UNIT_TARGET] = "Target",
+ [UNIT_DEVICE] = "Device",
+ [UNIT_MOUNT] = "Mount",
+ [UNIT_AUTOMOUNT] = "Automount",
+ [UNIT_SNAPSHOT] = "Snapshot",
+ [UNIT_SWAP] = "Swap"
+ };
+
+#define EXEC_CONTEXT_CONFIG_ITEMS(context, section) \
+ { "WorkingDirectory", config_parse_path, &(context).working_directory, section }, \
+ { "RootDirectory", config_parse_path, &(context).root_directory, section }, \
+ { "User", config_parse_string, &(context).user, section }, \
+ { "Group", config_parse_string, &(context).group, section }, \
+ { "SupplementaryGroups", config_parse_strv, &(context).supplementary_groups, section }, \
+ { "Nice", config_parse_nice, &(context), section }, \
+ { "OOMAdjust", config_parse_oom_adjust, &(context), section }, \
+ { "IOSchedulingClass", config_parse_io_class, &(context), section }, \
+ { "IOSchedulingPriority", config_parse_io_priority, &(context), section }, \
+ { "CPUSchedulingPolicy", config_parse_cpu_sched_policy,&(context), section }, \
+ { "CPUSchedulingPriority", config_parse_cpu_sched_prio, &(context), section }, \
+ { "CPUSchedulingResetOnFork", config_parse_bool, &(context).cpu_sched_reset_on_fork, section }, \
+ { "CPUAffinity", config_parse_cpu_affinity, &(context), section }, \
+ { "UMask", config_parse_mode, &(context).umask, section }, \
+ { "Environment", config_parse_strv, &(context).environment, section }, \
+ { "StandardInput", config_parse_input, &(context).std_input, section }, \
+ { "StandardOutput", config_parse_output, &(context).std_output, section }, \
+ { "StandardError", config_parse_output, &(context).std_output, section }, \
+ { "TTYPath", config_parse_path, &(context).tty_path, section }, \
+ { "SyslogIdentifier", config_parse_string, &(context).syslog_identifier, section }, \
+ { "SyslogFacility", config_parse_facility, &(context).syslog_priority, section }, \
+ { "SyslogLevel", config_parse_level, &(context).syslog_priority, section }, \
+ { "SyslogNoPrefix", config_parse_bool, &(context).syslog_no_prefix, section }, \
+ { "Capabilities", config_parse_capabilities, &(context), section }, \
+ { "SecureBits", config_parse_secure_bits, &(context), section }, \
+ { "CapabilityBoundingSetDrop", config_parse_bounding_set, &(context), section }, \
+ { "TimerSlackNS", config_parse_timer_slack_ns, &(context), section }, \
+ { "LimitCPU", config_parse_limit, &(context).rlimit[RLIMIT_CPU], section }, \
+ { "LimitFSIZE", config_parse_limit, &(context).rlimit[RLIMIT_FSIZE], section }, \
+ { "LimitDATA", config_parse_limit, &(context).rlimit[RLIMIT_DATA], section }, \
+ { "LimitSTACK", config_parse_limit, &(context).rlimit[RLIMIT_STACK], section }, \
+ { "LimitCORE", config_parse_limit, &(context).rlimit[RLIMIT_CORE], section }, \
+ { "LimitRSS", config_parse_limit, &(context).rlimit[RLIMIT_RSS], section }, \
+ { "LimitNOFILE", config_parse_limit, &(context).rlimit[RLIMIT_NOFILE], section }, \
+ { "LimitAS", config_parse_limit, &(context).rlimit[RLIMIT_AS], section }, \
+ { "LimitNPROC", config_parse_limit, &(context).rlimit[RLIMIT_NPROC], section }, \
+ { "LimitMEMLOCK", config_parse_limit, &(context).rlimit[RLIMIT_MEMLOCK], section }, \
+ { "LimitLOCKS", config_parse_limit, &(context).rlimit[RLIMIT_LOCKS], section }, \
+ { "LimitSIGPENDING", config_parse_limit, &(context).rlimit[RLIMIT_SIGPENDING], section }, \
+ { "LimitMSGQUEUE", config_parse_limit, &(context).rlimit[RLIMIT_MSGQUEUE], section }, \
+ { "LimitNICE", config_parse_limit, &(context).rlimit[RLIMIT_NICE], section }, \
+ { "LimitRTPRIO", config_parse_limit, &(context).rlimit[RLIMIT_RTPRIO], section }, \
+ { "LimitRTTIME", config_parse_limit, &(context).rlimit[RLIMIT_RTTIME], section }, \
+ { "ControlGroup", config_parse_cgroup, u, section }, \
+ { "ReadWriteDirectories", config_parse_path_strv, &(context).read_write_dirs, section }, \
+ { "ReadOnlyDirectories", config_parse_path_strv, &(context).read_only_dirs, section }, \
+ { "InaccessibleDirectories",config_parse_path_strv, &(context).inaccessible_dirs, section }, \
+ { "PrivateTmp", config_parse_bool, &(context).private_tmp, section }, \
+ { "MountFlags", config_parse_mount_flags, &(context), section }
+
+ const ConfigItem items[] = {
+ { "Names", config_parse_names, u, "Unit" },
+ { "Description", config_parse_description, u, "Unit" },
+ { "Requires", config_parse_deps, UINT_TO_PTR(UNIT_REQUIRES), "Unit" },
+ { "RequiresOverridable", config_parse_deps, UINT_TO_PTR(UNIT_REQUIRES_OVERRIDABLE), "Unit" },
+ { "Requisite", config_parse_deps, UINT_TO_PTR(UNIT_REQUISITE), "Unit" },
+ { "RequisiteOverridable", config_parse_deps, UINT_TO_PTR(UNIT_REQUISITE_OVERRIDABLE), "Unit" },
+ { "Wants", config_parse_deps, UINT_TO_PTR(UNIT_WANTS), "Unit" },
+ { "Conflicts", config_parse_deps, UINT_TO_PTR(UNIT_CONFLICTS), "Unit" },
+ { "Before", config_parse_deps, UINT_TO_PTR(UNIT_BEFORE), "Unit" },
+ { "After", config_parse_deps, UINT_TO_PTR(UNIT_AFTER), "Unit" },
+ { "RecursiveStop", config_parse_bool, &u->meta.recursive_stop, "Unit" },
+ { "StopWhenUnneeded", config_parse_bool, &u->meta.stop_when_unneeded, "Unit" },
+
+ { "PIDFile", config_parse_path, &u->service.pid_file, "Service" },
+ { "ExecStartPre", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START_PRE, "Service" },
+ { "ExecStart", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START, "Service" },
+ { "ExecStartPost", config_parse_exec, u->service.exec_command+SERVICE_EXEC_START_POST, "Service" },
+ { "ExecReload", config_parse_exec, u->service.exec_command+SERVICE_EXEC_RELOAD, "Service" },
+ { "ExecStop", config_parse_exec, u->service.exec_command+SERVICE_EXEC_STOP, "Service" },
+ { "ExecStopPost", config_parse_exec, u->service.exec_command+SERVICE_EXEC_STOP_POST, "Service" },
+ { "RestartSec", config_parse_usec, &u->service.restart_usec, "Service" },
+ { "TimeoutSec", config_parse_usec, &u->service.timeout_usec, "Service" },
+ { "Type", config_parse_service_type, &u->service.type, "Service" },
+ { "Restart", config_parse_service_restart, &u->service.restart, "Service" },
+ { "PermissionsStartOnly", config_parse_bool, &u->service.permissions_start_only, "Service" },
+ { "RootDirectoryStartOnly", config_parse_bool, &u->service.root_directory_start_only, "Service" },
+ { "ValidNoProcess", config_parse_bool, &u->service.valid_no_process, "Service" },
+ { "SysVStartPriority", config_parse_sysv_priority, &u->service.sysv_start_priority, "Service" },
+ { "KillMode", config_parse_kill_mode, &u->service.kill_mode, "Service" },
+ { "NonBlocking", config_parse_bool, &u->service.exec_context.non_blocking, "Service" },
+ { "BusName", config_parse_string, &u->service.bus_name, "Service" },
+ EXEC_CONTEXT_CONFIG_ITEMS(u->service.exec_context, "Service"),
+
+ { "ListenStream", config_parse_listen, &u->socket, "Socket" },
+ { "ListenDatagram", config_parse_listen, &u->socket, "Socket" },
+ { "ListenSequentialPacket", config_parse_listen, &u->socket, "Socket" },
+ { "ListenFIFO", config_parse_listen, &u->socket, "Socket" },
+ { "BindIPv6Only", config_parse_socket_bind, &u->socket, "Socket" },
+ { "Backlog", config_parse_unsigned, &u->socket.backlog, "Socket" },
+ { "BindToDevice", config_parse_bindtodevice, &u->socket, "Socket" },
+ { "ExecStartPre", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_START_PRE, "Socket" },
+ { "ExecStartPost", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_START_POST, "Socket" },
+ { "ExecStopPre", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_STOP_PRE, "Socket" },
+ { "ExecStopPost", config_parse_exec, u->socket.exec_command+SOCKET_EXEC_STOP_POST, "Socket" },
+ { "TimeoutSec", config_parse_usec, &u->socket.timeout_usec, "Socket" },
+ { "DirectoryMode", config_parse_mode, &u->socket.directory_mode, "Socket" },
+ { "SocketMode", config_parse_mode, &u->socket.socket_mode, "Socket" },
+ { "KillMode", config_parse_kill_mode, &u->socket.kill_mode, "Socket" },
+ { "Accept", config_parse_bool, &u->socket.accept, "Socket" },
+ EXEC_CONTEXT_CONFIG_ITEMS(u->socket.exec_context, "Socket"),
+
+ { "What", config_parse_string, &u->mount.parameters_fragment.what, "Mount" },
+ { "Where", config_parse_path, &u->mount.where, "Mount" },
+ { "Options", config_parse_string, &u->mount.parameters_fragment.options, "Mount" },
+ { "Type", config_parse_string, &u->mount.parameters_fragment.fstype, "Mount" },
+ { "TimeoutSec", config_parse_usec, &u->mount.timeout_usec, "Mount" },
+ { "KillMode", config_parse_kill_mode, &u->mount.kill_mode, "Mount" },
+ EXEC_CONTEXT_CONFIG_ITEMS(u->mount.exec_context, "Mount"),
+
+ { "Where", config_parse_path, &u->automount.where, "Automount" },
+
+ { "What", config_parse_path, &u->swap.parameters_fragment.what, "Swap" },
+ { "Priority", config_parse_int, &u->swap.parameters_fragment.priority, "Swap" },
+
+ { NULL, NULL, NULL, NULL }
+ };
+
+#undef EXEC_CONTEXT_CONFIG_ITEMS
+
+ const char *sections[3];
+ char *k;
+ int r;
+ Set *symlink_names;
+ FILE *f = NULL;
+ char *filename = NULL, *id = NULL;
+ Unit *merged;
+
+ if (!u) {
+ /* Dirty dirty hack. */
+ dump_items((FILE*) path, items);
+ return 0;
+ }
+
+ assert(u);
+ assert(path);
+
+ sections[0] = "Unit";
+ sections[1] = section_table[u->meta.type];
+ sections[2] = NULL;
+
+ if (!(symlink_names = set_new(string_hash_func, string_compare_func)))
+ return -ENOMEM;
+
+ if (path_is_absolute(path)) {
+
+ if (!(filename = strdup(path))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
+ free(filename);
+ filename = NULL;
+
+ if (r != -ENOENT)
+ goto finish;
+ }
+
+ } else {
+ char **p;
+
+ STRV_FOREACH(p, u->meta.manager->unit_path) {
+
+ /* Instead of opening the path right away, we manually
+ * follow all symlinks and add their name to our unit
+ * name set while doing so */
+ if (!(filename = path_make_absolute(path, *p))) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ if ((r = open_follow(&filename, &f, symlink_names, &id)) < 0) {
+ char *sn;
+
+ free(filename);
+ filename = NULL;
+
+ if (r != -ENOENT)
+ goto finish;
+
+ /* Empty the symlink names for the next run */
+ while ((sn = set_steal_first(symlink_names)))
+ free(sn);
+
+ continue;
+ }
+
+ break;
+ }
+ }
+
+ if (!filename) {
+ r = 0;
+ goto finish;
+ }
+
+ merged = u;
+ if ((r = merge_by_names(&merged, symlink_names, id)) < 0)
+ goto finish;
+
+ if (merged != u) {
+ u->meta.load_state = UNIT_MERGED;
+ r = 0;
+ goto finish;
+ }
+
+ /* Now, parse the file contents */
+ if ((r = config_parse(filename, f, sections, items, u)) < 0)
+ goto finish;
+
+ free(u->meta.fragment_path);
+ u->meta.fragment_path = filename;
+ filename = NULL;
+
+ u->meta.load_state = UNIT_LOADED;
+ r = 0;
+
+finish:
+ while ((k = set_steal_first(symlink_names)))
+ free(k);
+
+ set_free(symlink_names);
+ free(filename);
+
+ if (f)
+ fclose(f);
+
+ return r;
+}
+
+int unit_load_fragment(Unit *u) {
+ int r;
+
+ assert(u);
+
+ if (u->meta.fragment_path) {
+
+ if ((r = load_from_path(u, u->meta.fragment_path)) < 0)
+ return r;
+
+ } else {
+ Iterator i;
+ const char *t;
+
+ /* Try to find the unit under its id */
+ if ((r = load_from_path(u, u->meta.id)) < 0)
+ return r;
+
+ /* Try to find an alias we can load this with */
+ if (u->meta.load_state == UNIT_STUB)
+ SET_FOREACH(t, u->meta.names, i) {
+
+ if (t == u->meta.id)
+ continue;
+
+ if ((r = load_from_path(u, t)) < 0)
+ return r;
+
+ if (u->meta.load_state != UNIT_STUB)
+ break;
+ }
+
+ /* Now, follow the same logic, but look for a template */
+ if (u->meta.load_state == UNIT_STUB && u->meta.instance) {
+ char *k;
+
+ if (!(k = unit_name_template(u->meta.id)))
+ return -ENOMEM;
+
+ r = load_from_path(u, k);
+ free(k);
+
+ if (r < 0)
+ return r;
+
+ if (u->meta.load_state == UNIT_STUB)
+ SET_FOREACH(t, u->meta.names, i) {
+
+ if (t == u->meta.id)
+ continue;
+
+ if (!(k = unit_name_template(t)))
+ return -ENOMEM;
+
+ r = load_from_path(u, k);
+ free(k);
+
+ if (r < 0)
+ return r;
+
+ if (u->meta.load_state != UNIT_STUB)
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
+void unit_dump_config_items(FILE *f) {
+ /* OK, this wins a prize for extreme ugliness. */
+
+ load_from_path(NULL, (const void*) f);
+}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-07-26 15:15:59 +0000