src/core/dbus-util.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include "sd-bus.h"
   5
   6 #include "dissect-image.h"
   7 #include "unit.h"
   8
   9 int bus_property_get_triggered_unit(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error);
  10
  11 #define BUS_DEFINE_SET_TRANSIENT(function, bus_type, type, cast_type, fmt) \
  12         int bus_set_transient_##function(                               \
  13                         Unit *u,                                        \
  14                         const char *name,                               \
  15                         cast_type *p,                                   \
  16                         sd_bus_message *message,                        \
  17                         UnitWriteFlags flags,                           \
  18                         sd_bus_error *error) {                          \
  19                                                                         \
  20                 type v;                                                 \
  21                 int r;                                                  \
  22                                                                         \
  23                 assert(p);                                              \
  24                                                                         \
  25                 r = sd_bus_message_read(message, bus_type, &v);         \
  26                 if (r < 0)                                              \
  27                         return r;                                       \
  28                                                                         \
  29                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
  30                         *p = (cast_type) v;                             \
  31                         unit_write_settingf(u, flags, name,             \
  32                                             "%s=" fmt, name, v);        \
  33                 }                                                       \
  34                                                                         \
  35                 return 1;                                               \
  36         }
  37
  38 #define BUS_DEFINE_SET_TRANSIENT_IS_VALID(function, bus_type, type, cast_type, fmt, check) \
  39         int bus_set_transient_##function(                               \
  40                         Unit *u,                                        \
  41                         const char *name,                               \
  42                         cast_type *p,                                   \
  43                         sd_bus_message *message,                        \
  44                         UnitWriteFlags flags,                           \
  45                         sd_bus_error *error) {                          \
  46                                                                         \
  47                 type v;                                                 \
  48                 int r;                                                  \
  49                                                                         \
  50                 assert(p);                                              \
  51                                                                         \
  52                 r = sd_bus_message_read(message, bus_type, &v);         \
  53                 if (r < 0)                                              \
  54                         return r;                                       \
  55                                                                         \
  56                 if (!check(v))                                          \
  57                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
  58                                                  "Invalid %s setting: " fmt, name, v); \
  59                                                                         \
  60                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
  61                         *p = (cast_type) v;                             \
  62                         unit_write_settingf(u, flags, name,             \
  63                                             "%s=" fmt, name, v);        \
  64                 }                                                       \
  65                                                                         \
  66                 return 1;                                               \
  67         }
  68
  69 #define BUS_DEFINE_SET_TRANSIENT_TO_STRING(function, bus_type, type, cast_type, fmt, to_string) \
  70         int bus_set_transient_##function(                               \
  71                         Unit *u,                                        \
  72                         const char *name,                               \
  73                         cast_type *p,                                   \
  74                         sd_bus_message *message,                        \
  75                         UnitWriteFlags flags,                           \
  76                         sd_bus_error *error) {                          \
  77                                                                         \
  78                 const char *s;                                          \
  79                 type v;                                                 \
  80                 int r;                                                  \
  81                                                                         \
  82                 assert(p);                                              \
  83                                                                         \
  84                 r = sd_bus_message_read(message, bus_type, &v);         \
  85                 if (r < 0)                                              \
  86                         return r;                                       \
  87                                                                         \
  88                 s = to_string(v);                                       \
  89                 if (!s)                                                 \
  90                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
  91                                                  "Invalid %s setting: " fmt, name, v); \
  92                                                                         \
  93                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
  94                         *p = (cast_type) v;                             \
  95                         unit_write_settingf(u, flags, name,             \
  96                                             "%s=%s", name, s);          \
  97                 }                                                       \
  98                                                                         \
  99                 return 1;                                               \
 100         }
 101
 102 #define BUS_DEFINE_SET_TRANSIENT_TO_STRING_ALLOC(function, bus_type, type, cast_type, fmt, to_string) \
 103         int bus_set_transient_##function(                               \
 104                         Unit *u,                                        \
 105                         const char *name,                               \
 106                         cast_type *p,                                   \
 107                         sd_bus_message *message,                        \
 108                         UnitWriteFlags flags,                           \
 109                         sd_bus_error *error) {                          \
 110                                                                         \
 111                 _cleanup_free_ char *s = NULL;                          \
 112                 type v;                                                 \
 113                 int r;                                                  \
 114                                                                         \
 115                 assert(p);                                              \
 116                                                                         \
 117                 r = sd_bus_message_read(message, bus_type, &v);         \
 118                 if (r < 0)                                              \
 119                         return r;                                       \
 120                                                                         \
 121                 r = to_string(v, &s);                                   \
 122                 if (r == -EINVAL)                                       \
 123                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
 124                                                  "Invalid %s setting: " fmt, name, v); \
 125                 if (r < 0)                                              \
 126                         return r;                                       \
 127                                                                         \
 128                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
 129                         *p = (cast_type) v;                             \
 130                         unit_write_settingf(u, flags, name,             \
 131                                             "%s=%s",                    \
 132                                             name, strempty(s));         \
 133                 }                                                       \
 134                                                                         \
 135                 return 1;                                               \
 136         }
 137
 138 #define BUS_DEFINE_SET_TRANSIENT_PARSE(function, type, parse)           \
 139         int bus_set_transient_##function(                               \
 140                         Unit *u,                                        \
 141                         const char *name,                               \
 142                         type *p,                                        \
 143                         sd_bus_message *message,                        \
 144                         UnitWriteFlags flags,                           \
 145                         sd_bus_error *error) {                          \
 146                                                                         \
 147                 const char *s;                                          \
 148                 type v;                                                 \
 149                 int r;                                                  \
 150                                                                         \
 151                 assert(p);                                              \
 152                                                                         \
 153                 r = sd_bus_message_read(message, "s", &s);              \
 154                 if (r < 0)                                              \
 155                         return r;                                       \
 156                                                                         \
 157                 v = parse(s);                                           \
 158                 if (v < 0)                                              \
 159                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
 160                                                  "Invalid %s setting: %s", name, s); \
 161                                                                         \
 162                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
 163                         *p = v;                                         \
 164                         unit_write_settingf(u, flags, name,             \
 165                                             "%s=%s", name, s);          \
 166                 }                                                       \
 167                                                                         \
 168                 return 1;                                               \
 169         }
 170
 171 #define BUS_DEFINE_SET_TRANSIENT_PARSE_PTR(function, type, parse)       \
 172         int bus_set_transient_##function(                               \
 173                         Unit *u,                                        \
 174                         const char *name,                               \
 175                         type *p,                                        \
 176                         sd_bus_message *message,                        \
 177                         UnitWriteFlags flags,                           \
 178                         sd_bus_error *error) {                          \
 179                                                                         \
 180                 const char *s;                                          \
 181                 type v;                                                 \
 182                 int r;                                                  \
 183                                                                         \
 184                 assert(p);                                              \
 185                                                                         \
 186                 r = sd_bus_message_read(message, "s", &s);              \
 187                 if (r < 0)                                              \
 188                         return r;                                       \
 189                                                                         \
 190                 r = parse(s, &v);                                       \
 191                 if (r < 0)                                              \
 192                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
 193                                                  "Invalid %s setting: %s", name, s); \
 194                                                                         \
 195                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
 196                         *p = v;                                         \
 197                         unit_write_settingf(u, flags, name,             \
 198                                             "%s=%s", name, strempty(s)); \
 199                 }                                                       \
 200                                                                         \
 201                 return 1;                                               \
 202         }
 203
 204 #define BUS_DEFINE_SET_TRANSIENT_STRING_WITH_CHECK(function, check)     \
 205         int bus_set_transient_##function(                               \
 206                         Unit *u,                                        \
 207                         const char *name,                               \
 208                         char **p,                                       \
 209                         sd_bus_message *message,                        \
 210                         UnitWriteFlags flags,                           \
 211                         sd_bus_error *error) {                          \
 212                                                                         \
 213                 const char *v;                                          \
 214                 int r;                                                  \
 215                                                                         \
 216                 assert(p);                                              \
 217                                                                         \
 218                 r = sd_bus_message_read(message, "s", &v);              \
 219                 if (r < 0)                                              \
 220                         return r;                                       \
 221                                                                         \
 222                 if (!isempty(v) && !check(v))                           \
 223                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, \
 224                                                  "Invalid %s setting: %s", name, v); \
 225                                                                         \
 226                 if (!UNIT_WRITE_FLAGS_NOOP(flags)) {                    \
 227                         r = free_and_strdup(p, empty_to_null(v));       \
 228                         if (r < 0)                                      \
 229                                 return r;                               \
 230                                                                         \
 231                         unit_write_settingf(u, flags|UNIT_ESCAPE_SPECIFIERS, name, \
 232                                             "%s=%s", name, strempty(v)); \
 233                 }                                                       \
 234                                                                         \
 235                 return 1;                                               \
 236         }
 237
 238 int bus_set_transient_mode_t(Unit *u, const char *name, mode_t *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 239 int bus_set_transient_unsigned(Unit *u, const char *name, unsigned *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 240 int bus_set_transient_user_relaxed(Unit *u, const char *name, char **p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 241 int bus_set_transient_path(Unit *u, const char *name, char **p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 242 int bus_set_transient_string(Unit *u, const char *name, char **p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 243 int bus_set_transient_bool(Unit *u, const char *name, bool *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 244 int bus_set_transient_tristate(Unit *u, const char *name, int *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 245 int bus_set_transient_usec_internal(Unit *u, const char *name, usec_t *p, bool fix_0, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error);
 246 static inline int bus_set_transient_usec(Unit *u, const char *name, usec_t *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error) {
 247         return bus_set_transient_usec_internal(u, name, p, false, message, flags, error);
 248 }
 249 static inline int bus_set_transient_usec_fix_0(Unit *u, const char *name, usec_t *p, sd_bus_message *message, UnitWriteFlags flags, sd_bus_error *error) {
 250         return bus_set_transient_usec_internal(u, name, p, true, message, flags, error);
 251 }
 252 int bus_verify_manage_units_async_full(Unit *u, const char *verb, int capability, const char *polkit_message, bool interactive, sd_bus_message *call, sd_bus_error *error);
 253
 254 int bus_read_mount_options(sd_bus_message *message, sd_bus_error *error, MountOptions **ret_options, char **ret_format_str, const char *separator);
 255
 256 int bus_property_get_activation_details(sd_bus *bus, const char *path, const char *interface, const char *property, sd_bus_message *reply, void *userdata, sd_bus_error *error);