| File: | build-scan/../src/libsystemd/sd-device/sd-device.c |
| Warning: | line 1826, column 9 Value stored to 'value' is never read |
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| 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
| 2 | |
| 3 | #include <ctype.h> |
| 4 | #include <net/if.h> |
| 5 | #include <sys/types.h> |
| 6 | |
| 7 | #include "sd-device.h" |
| 8 | |
| 9 | #include "alloc-util.h" |
| 10 | #include "device-internal.h" |
| 11 | #include "device-private.h" |
| 12 | #include "device-util.h" |
| 13 | #include "dirent-util.h" |
| 14 | #include "fd-util.h" |
| 15 | #include "fileio.h" |
| 16 | #include "fs-util.h" |
| 17 | #include "hashmap.h" |
| 18 | #include "macro.h" |
| 19 | #include "parse-util.h" |
| 20 | #include "path-util.h" |
| 21 | #include "set.h" |
| 22 | #include "socket-util.h" |
| 23 | #include "stat-util.h" |
| 24 | #include "string-util.h" |
| 25 | #include "strv.h" |
| 26 | #include "strxcpyx.h" |
| 27 | #include "util.h" |
| 28 | |
| 29 | int device_new_aux(sd_device **ret) { |
| 30 | sd_device *device = NULL((void*)0); |
| 31 | |
| 32 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 32, __PRETTY_FUNCTION__); } while (0); |
| 33 | |
| 34 | device = new0(sd_device, 1)((sd_device*) calloc((1), sizeof(sd_device))); |
| 35 | if (!device) |
| 36 | return -ENOMEM12; |
| 37 | |
| 38 | device->n_ref = 1; |
| 39 | device->watch_handle = -1; |
| 40 | |
| 41 | *ret = device; |
| 42 | |
| 43 | return 0; |
| 44 | } |
| 45 | |
| 46 | _public___attribute__ ((visibility("default"))) sd_device *sd_device_ref(sd_device *device) { |
| 47 | if (device) |
| 48 | assert_se(++ device->n_ref >= 2)do { if ((__builtin_expect(!!(!(++ device->n_ref >= 2)) ,0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("++ device->n_ref >= 2" ), "../src/libsystemd/sd-device/sd-device.c", 48, __PRETTY_FUNCTION__ ); } while (0); |
| 49 | |
| 50 | return device; |
| 51 | } |
| 52 | |
| 53 | _public___attribute__ ((visibility("default"))) sd_device *sd_device_unref(sd_device *device) { |
| 54 | if (device && -- device->n_ref == 0) { |
| 55 | sd_device_unref(device->parent); |
| 56 | free(device->syspath); |
| 57 | free(device->sysname); |
| 58 | free(device->devtype); |
| 59 | free(device->devname); |
| 60 | free(device->subsystem); |
| 61 | free(device->driver_subsystem); |
| 62 | free(device->driver); |
| 63 | free(device->id_filename); |
| 64 | free(device->properties_strv); |
| 65 | free(device->properties_nulstr); |
| 66 | |
| 67 | ordered_hashmap_free_free_free(device->properties); |
| 68 | ordered_hashmap_free_free_free(device->properties_db); |
| 69 | hashmap_free_free_free(device->sysattr_values); |
| 70 | set_free_free(device->sysattrs); |
| 71 | set_free_free(device->tags); |
| 72 | set_free_free(device->devlinks); |
| 73 | |
| 74 | free(device); |
| 75 | } |
| 76 | |
| 77 | return NULL((void*)0); |
| 78 | } |
| 79 | |
| 80 | int device_add_property_aux(sd_device *device, const char *_key, const char *_value, bool_Bool db) { |
| 81 | OrderedHashmap **properties; |
| 82 | |
| 83 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 83, __PRETTY_FUNCTION__); } while (0); |
| 84 | assert(_key)do { if ((__builtin_expect(!!(!(_key)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_key"), "../src/libsystemd/sd-device/sd-device.c" , 84, __PRETTY_FUNCTION__); } while (0); |
| 85 | |
| 86 | if (db) |
| 87 | properties = &device->properties_db; |
| 88 | else |
| 89 | properties = &device->properties; |
| 90 | |
| 91 | if (_value) { |
| 92 | _cleanup_free___attribute__((cleanup(freep))) char *key = NULL((void*)0), *value = NULL((void*)0), *old_key = NULL((void*)0), *old_value = NULL((void*)0); |
| 93 | int r; |
| 94 | |
| 95 | r = ordered_hashmap_ensure_allocated(properties, &string_hash_ops)internal_ordered_hashmap_ensure_allocated(properties, &string_hash_ops ); |
| 96 | if (r < 0) |
| 97 | return r; |
| 98 | |
| 99 | key = strdup(_key); |
| 100 | if (!key) |
| 101 | return -ENOMEM12; |
| 102 | |
| 103 | value = strdup(_value); |
| 104 | if (!value) |
| 105 | return -ENOMEM12; |
| 106 | |
| 107 | old_value = ordered_hashmap_get2(*properties, key, (void**) &old_key); |
| 108 | |
| 109 | r = ordered_hashmap_replace(*properties, key, value); |
| 110 | if (r < 0) |
| 111 | return r; |
| 112 | |
| 113 | key = NULL((void*)0); |
| 114 | value = NULL((void*)0); |
| 115 | } else { |
| 116 | _cleanup_free___attribute__((cleanup(freep))) char *key = NULL((void*)0); |
| 117 | _cleanup_free___attribute__((cleanup(freep))) char *value = NULL((void*)0); |
| 118 | |
| 119 | value = ordered_hashmap_remove2(*properties, _key, (void**) &key); |
| 120 | } |
| 121 | |
| 122 | if (!db) { |
| 123 | device->properties_generation++; |
| 124 | device->properties_buf_outdated = true1; |
| 125 | } |
| 126 | |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | int device_add_property_internal(sd_device *device, const char *key, const char *value) { |
| 131 | return device_add_property_aux(device, key, value, false0); |
| 132 | } |
| 133 | |
| 134 | int device_set_syspath(sd_device *device, const char *_syspath, bool_Bool verify) { |
| 135 | _cleanup_free___attribute__((cleanup(freep))) char *syspath = NULL((void*)0); |
| 136 | const char *devpath; |
| 137 | int r; |
| 138 | |
| 139 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 139, __PRETTY_FUNCTION__); } while (0); |
| 140 | assert(_syspath)do { if ((__builtin_expect(!!(!(_syspath)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_syspath"), "../src/libsystemd/sd-device/sd-device.c" , 140, __PRETTY_FUNCTION__); } while (0); |
| 141 | |
| 142 | /* must be a subdirectory of /sys */ |
| 143 | if (!path_startswith(_syspath, "/sys/")) { |
| 144 | log_debug("sd-device: syspath '%s' is not a subdirectory of /sys", _syspath)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 144, __func__, "sd-device: syspath '%s' is not a subdirectory of /sys" , _syspath) : -abs(_e); }); |
| 145 | return -EINVAL22; |
| 146 | } |
| 147 | |
| 148 | if (verify) { |
| 149 | r = chase_symlinks(_syspath, NULL((void*)0), 0, &syspath); |
| 150 | if (r == -ENOENT2) |
| 151 | return -ENODEV19; /* the device does not exist (any more?) */ |
| 152 | if (r < 0) |
| 153 | return log_debug_errno(r, "sd-device: could not get target of '%s': %m", _syspath)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 153, __func__, "sd-device: could not get target of '%s': %m" , _syspath) : -abs(_e); }); |
| 154 | |
| 155 | if (!path_startswith(syspath, "/sys")) { |
| 156 | _cleanup_free___attribute__((cleanup(freep))) char *real_sys = NULL((void*)0), *new_syspath = NULL((void*)0); |
| 157 | char *p; |
| 158 | |
| 159 | /* /sys is a symlink to somewhere sysfs is mounted on? In that case, we convert the path to real sysfs to "/sys". */ |
| 160 | r = chase_symlinks("/sys", NULL((void*)0), 0, &real_sys); |
| 161 | if (r < 0) |
| 162 | return log_debug_errno(r, "sd-device: could not chase symlink /sys: %m")({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 162, __func__, "sd-device: could not chase symlink /sys: %m" ) : -abs(_e); }); |
| 163 | |
| 164 | p = path_startswith(syspath, real_sys); |
| 165 | if (!p) { |
| 166 | log_debug("sd-device: canonicalized path '%s' does not starts with sysfs mount point '%s'", syspath, real_sys)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 166, __func__, "sd-device: canonicalized path '%s' does not starts with sysfs mount point '%s'" , syspath, real_sys) : -abs(_e); }); |
| 167 | return -ENODEV19; |
| 168 | } |
| 169 | |
| 170 | new_syspath = strjoin("/sys/", p)strjoin_real(("/sys/"), p, ((void*)0)); |
| 171 | if (!new_syspath) |
| 172 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/libsystemd/sd-device/sd-device.c" , 172, __func__); |
| 173 | |
| 174 | free_and_replace(syspath, new_syspath)({ free(syspath); (syspath) = (new_syspath); (new_syspath) = ( (void*)0); 0; }); |
| 175 | path_simplify(syspath, false0); |
| 176 | } |
| 177 | |
| 178 | if (path_startswith(syspath, "/sys/devices/")) { |
| 179 | char *path; |
| 180 | |
| 181 | /* all 'devices' require an 'uevent' file */ |
| 182 | path = strjoina(syspath, "/uevent")({ const char *_appendees_[] = { syspath, "/uevent" }; char * _d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 183 | r = access(path, F_OK0); |
| 184 | if (r < 0) { |
| 185 | if (errno(*__errno_location ()) == ENOENT2) |
| 186 | /* this is not a valid device */ |
| 187 | return -ENODEV19; |
| 188 | |
| 189 | return log_debug_errno(errno, "sd-device: %s does not have an uevent file: %m", syspath)({ int _level = ((7)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/libsystemd/sd-device/sd-device.c" , 189, __func__, "sd-device: %s does not have an uevent file: %m" , syspath) : -abs(_e); }); |
| 190 | } |
| 191 | } else { |
| 192 | /* everything else just needs to be a directory */ |
| 193 | if (!is_dir(syspath, false0)) |
| 194 | return -ENODEV19; |
| 195 | } |
| 196 | } else { |
| 197 | syspath = strdup(_syspath); |
| 198 | if (!syspath) |
| 199 | return -ENOMEM12; |
| 200 | } |
| 201 | |
| 202 | devpath = syspath + STRLEN("/sys")(sizeof("""/sys""") - 1); |
| 203 | |
| 204 | r = device_add_property_internal(device, "DEVPATH", devpath); |
| 205 | if (r < 0) |
| 206 | return r; |
| 207 | |
| 208 | free_and_replace(device->syspath, syspath)({ free(device->syspath); (device->syspath) = (syspath) ; (syspath) = ((void*)0); 0; }); |
| 209 | |
| 210 | device->devpath = devpath; |
| 211 | |
| 212 | return 0; |
| 213 | } |
| 214 | |
| 215 | _public___attribute__ ((visibility("default"))) int sd_device_new_from_syspath(sd_device **ret, const char *syspath) { |
| 216 | _cleanup_(sd_device_unrefp)__attribute__((cleanup(sd_device_unrefp))) sd_device *device = NULL((void*)0); |
| 217 | int r; |
| 218 | |
| 219 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 219, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 220 | assert_return(syspath, -EINVAL)do { if (!(((__builtin_expect(!!(syspath),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("syspath"), "../src/libsystemd/sd-device/sd-device.c" , 220, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 221 | |
| 222 | r = device_new_aux(&device); |
| 223 | if (r < 0) |
| 224 | return r; |
| 225 | |
| 226 | r = device_set_syspath(device, syspath, true1); |
| 227 | if (r < 0) |
| 228 | return r; |
| 229 | |
| 230 | *ret = TAKE_PTR(device)({ typeof(device) _ptr_ = (device); (device) = ((void*)0); _ptr_ ; }); |
| 231 | |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | _public___attribute__ ((visibility("default"))) int sd_device_new_from_devnum(sd_device **ret, char type, dev_t devnum) { |
| 236 | char *syspath; |
| 237 | char id[DECIMAL_STR_MAX(unsigned)(2+(sizeof(unsigned) <= 1 ? 3 : sizeof(unsigned) <= 2 ? 5 : sizeof(unsigned) <= 4 ? 10 : sizeof(unsigned) <= 8 ? 20 : sizeof(int[-2*(sizeof(unsigned) > 8)]))) * 2 + 1]; |
| 238 | |
| 239 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 239, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 240 | assert_return(IN_SET(type, 'b', 'c'), -EINVAL)do { if (!(((__builtin_expect(!!(({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended[20 - sizeof((int[]){'b', 'c'})/sizeof(int)]; switch(type) { case 'b': case 'c': _found = 1; break; default: break; } _found; } )),1))) ? (1) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD , ("IN_SET(type, 'b', 'c')"), "../src/libsystemd/sd-device/sd-device.c" , 240, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 241 | |
| 242 | /* use /sys/dev/{block,char}/<maj>:<min> link */ |
| 243 | snprintf(id, sizeof(id), "%u:%u", major(devnum)gnu_dev_major (devnum), minor(devnum)gnu_dev_minor (devnum)); |
| 244 | |
| 245 | syspath = strjoina("/sys/dev/", (type == 'b' ? "block" : "char"), "/", id)({ const char *_appendees_[] = { "/sys/dev/", (type == 'b' ? "block" : "char"), "/", id }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _len_ += strlen (_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 246 | |
| 247 | return sd_device_new_from_syspath(ret, syspath); |
| 248 | } |
| 249 | |
| 250 | _public___attribute__ ((visibility("default"))) int sd_device_new_from_subsystem_sysname(sd_device **ret, const char *subsystem, const char *sysname) { |
| 251 | char *name, *syspath; |
| 252 | size_t len = 0; |
| 253 | |
| 254 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 254, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 255 | assert_return(subsystem, -EINVAL)do { if (!(((__builtin_expect(!!(subsystem),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("subsystem"), "../src/libsystemd/sd-device/sd-device.c" , 255, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 256 | assert_return(sysname, -EINVAL)do { if (!(((__builtin_expect(!!(sysname),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("sysname"), "../src/libsystemd/sd-device/sd-device.c" , 256, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 257 | |
| 258 | if (streq(subsystem, "subsystem")(strcmp((subsystem),("subsystem")) == 0)) { |
| 259 | syspath = strjoina("/sys/subsystem/", sysname)({ const char *_appendees_[] = { "/sys/subsystem/", sysname } ; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0 ; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 260 | if (access(syspath, F_OK0) >= 0) |
| 261 | return sd_device_new_from_syspath(ret, syspath); |
| 262 | |
| 263 | syspath = strjoina("/sys/bus/", sysname)({ const char *_appendees_[] = { "/sys/bus/", sysname }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 264 | if (access(syspath, F_OK0) >= 0) |
| 265 | return sd_device_new_from_syspath(ret, syspath); |
| 266 | |
| 267 | syspath = strjoina("/sys/class/", sysname)({ const char *_appendees_[] = { "/sys/class/", sysname }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 268 | if (access(syspath, F_OK0) >= 0) |
| 269 | return sd_device_new_from_syspath(ret, syspath); |
| 270 | } else if (streq(subsystem, "module")(strcmp((subsystem),("module")) == 0)) { |
| 271 | syspath = strjoina("/sys/module/", sysname)({ const char *_appendees_[] = { "/sys/module/", sysname }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 272 | if (access(syspath, F_OK0) >= 0) |
| 273 | return sd_device_new_from_syspath(ret, syspath); |
| 274 | } else if (streq(subsystem, "drivers")(strcmp((subsystem),("drivers")) == 0)) { |
| 275 | char subsys[PATH_MAX4096]; |
| 276 | char *driver; |
| 277 | |
| 278 | strscpy(subsys, sizeof(subsys), sysname); |
| 279 | driver = strchr(subsys, ':'); |
| 280 | if (driver) { |
| 281 | driver[0] = '\0'; |
| 282 | driver++; |
| 283 | |
| 284 | syspath = strjoina("/sys/subsystem/", subsys, "/drivers/", driver)({ const char *_appendees_[] = { "/sys/subsystem/", subsys, "/drivers/" , driver }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 285 | if (access(syspath, F_OK0) >= 0) |
| 286 | return sd_device_new_from_syspath(ret, syspath); |
| 287 | |
| 288 | syspath = strjoina("/sys/bus/", subsys, "/drivers/", driver)({ const char *_appendees_[] = { "/sys/bus/", subsys, "/drivers/" , driver }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 289 | if (access(syspath, F_OK0) >= 0) |
| 290 | return sd_device_new_from_syspath(ret, syspath); |
| 291 | } |
| 292 | } |
| 293 | |
| 294 | /* translate sysname back to sysfs filename */ |
| 295 | name = strdupa(sysname)(__extension__ ({ const char *__old = (sysname); size_t __len = strlen (__old) + 1; char *__new = (char *) __builtin_alloca (__len); (char *) memcpy (__new, __old, __len); })); |
| 296 | while (name[len] != '\0') { |
| 297 | if (name[len] == '/') |
| 298 | name[len] = '!'; |
| 299 | |
| 300 | len++; |
| 301 | } |
| 302 | |
| 303 | syspath = strjoina("/sys/subsystem/", subsystem, "/devices/", name)({ const char *_appendees_[] = { "/sys/subsystem/", subsystem , "/devices/", name }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _len_ += strlen (_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 304 | if (access(syspath, F_OK0) >= 0) |
| 305 | return sd_device_new_from_syspath(ret, syspath); |
| 306 | |
| 307 | syspath = strjoina("/sys/bus/", subsystem, "/devices/", name)({ const char *_appendees_[] = { "/sys/bus/", subsystem, "/devices/" , name }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for ( _i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 308 | if (access(syspath, F_OK0) >= 0) |
| 309 | return sd_device_new_from_syspath(ret, syspath); |
| 310 | |
| 311 | syspath = strjoina("/sys/class/", subsystem, "/", name)({ const char *_appendees_[] = { "/sys/class/", subsystem, "/" , name }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for ( _i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 312 | if (access(syspath, F_OK0) >= 0) |
| 313 | return sd_device_new_from_syspath(ret, syspath); |
| 314 | |
| 315 | syspath = strjoina("/sys/firmware/", subsystem, "/", sysname)({ const char *_appendees_[] = { "/sys/firmware/", subsystem, "/", sysname }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_ ; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _len_ += strlen (_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 316 | if (access(syspath, F_OK0) >= 0) |
| 317 | return sd_device_new_from_syspath(ret, syspath); |
| 318 | |
| 319 | return -ENODEV19; |
| 320 | } |
| 321 | |
| 322 | int device_set_devtype(sd_device *device, const char *_devtype) { |
| 323 | _cleanup_free___attribute__((cleanup(freep))) char *devtype = NULL((void*)0); |
| 324 | int r; |
| 325 | |
| 326 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 326, __PRETTY_FUNCTION__); } while (0); |
| 327 | assert(_devtype)do { if ((__builtin_expect(!!(!(_devtype)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_devtype"), "../src/libsystemd/sd-device/sd-device.c" , 327, __PRETTY_FUNCTION__); } while (0); |
| 328 | |
| 329 | devtype = strdup(_devtype); |
| 330 | if (!devtype) |
| 331 | return -ENOMEM12; |
| 332 | |
| 333 | r = device_add_property_internal(device, "DEVTYPE", devtype); |
| 334 | if (r < 0) |
| 335 | return r; |
| 336 | |
| 337 | free_and_replace(device->devtype, devtype)({ free(device->devtype); (device->devtype) = (devtype) ; (devtype) = ((void*)0); 0; }); |
| 338 | |
| 339 | return 0; |
| 340 | } |
| 341 | |
| 342 | int device_set_ifindex(sd_device *device, const char *_ifindex) { |
| 343 | int ifindex, r; |
| 344 | |
| 345 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 345, __PRETTY_FUNCTION__); } while (0); |
| 346 | assert(_ifindex)do { if ((__builtin_expect(!!(!(_ifindex)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_ifindex"), "../src/libsystemd/sd-device/sd-device.c" , 346, __PRETTY_FUNCTION__); } while (0); |
| 347 | |
| 348 | r = parse_ifindex(_ifindex, &ifindex); |
| 349 | if (r < 0) |
| 350 | return r; |
| 351 | |
| 352 | r = device_add_property_internal(device, "IFINDEX", _ifindex); |
| 353 | if (r < 0) |
| 354 | return r; |
| 355 | |
| 356 | device->ifindex = ifindex; |
| 357 | |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | int device_set_devname(sd_device *device, const char *_devname) { |
| 362 | _cleanup_free___attribute__((cleanup(freep))) char *devname = NULL((void*)0); |
| 363 | int r; |
| 364 | |
| 365 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 365, __PRETTY_FUNCTION__); } while (0); |
| 366 | assert(_devname)do { if ((__builtin_expect(!!(!(_devname)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_devname"), "../src/libsystemd/sd-device/sd-device.c" , 366, __PRETTY_FUNCTION__); } while (0); |
| 367 | |
| 368 | if (_devname[0] != '/') { |
| 369 | r = asprintf(&devname, "/dev/%s", _devname); |
| 370 | if (r < 0) |
| 371 | return -ENOMEM12; |
| 372 | } else { |
| 373 | devname = strdup(_devname); |
| 374 | if (!devname) |
| 375 | return -ENOMEM12; |
| 376 | } |
| 377 | |
| 378 | r = device_add_property_internal(device, "DEVNAME", devname); |
| 379 | if (r < 0) |
| 380 | return r; |
| 381 | |
| 382 | free_and_replace(device->devname, devname)({ free(device->devname); (device->devname) = (devname) ; (devname) = ((void*)0); 0; }); |
| 383 | |
| 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | int device_set_devmode(sd_device *device, const char *_devmode) { |
| 388 | unsigned devmode; |
| 389 | int r; |
| 390 | |
| 391 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 391, __PRETTY_FUNCTION__); } while (0); |
| 392 | assert(_devmode)do { if ((__builtin_expect(!!(!(_devmode)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_devmode"), "../src/libsystemd/sd-device/sd-device.c" , 392, __PRETTY_FUNCTION__); } while (0); |
| 393 | |
| 394 | r = safe_atou(_devmode, &devmode); |
| 395 | if (r < 0) |
| 396 | return r; |
| 397 | |
| 398 | if (devmode > 07777) |
| 399 | return -EINVAL22; |
| 400 | |
| 401 | r = device_add_property_internal(device, "DEVMODE", _devmode); |
| 402 | if (r < 0) |
| 403 | return r; |
| 404 | |
| 405 | device->devmode = devmode; |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | int device_set_devnum(sd_device *device, const char *major, const char *minor) { |
| 411 | unsigned maj = 0, min = 0; |
| 412 | int r; |
| 413 | |
| 414 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 414, __PRETTY_FUNCTION__); } while (0); |
| 415 | assert(major)do { if ((__builtin_expect(!!(!(major)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("major"), "../src/libsystemd/sd-device/sd-device.c" , 415, __PRETTY_FUNCTION__); } while (0); |
| 416 | |
| 417 | r = safe_atou(major, &maj); |
| 418 | if (r < 0) |
| 419 | return r; |
| 420 | if (!maj) |
| 421 | return 0; |
| 422 | |
| 423 | if (minor) { |
| 424 | r = safe_atou(minor, &min); |
| 425 | if (r < 0) |
| 426 | return r; |
| 427 | } |
| 428 | |
| 429 | r = device_add_property_internal(device, "MAJOR", major); |
| 430 | if (r < 0) |
| 431 | return r; |
| 432 | |
| 433 | if (minor) { |
| 434 | r = device_add_property_internal(device, "MINOR", minor); |
| 435 | if (r < 0) |
| 436 | return r; |
| 437 | } |
| 438 | |
| 439 | device->devnum = makedev(maj, min)gnu_dev_makedev (maj, min); |
| 440 | |
| 441 | return 0; |
| 442 | } |
| 443 | |
| 444 | static int handle_uevent_line(sd_device *device, const char *key, const char *value, const char **major, const char **minor) { |
| 445 | int r; |
| 446 | |
| 447 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 447, __PRETTY_FUNCTION__); } while (0); |
| 448 | assert(key)do { if ((__builtin_expect(!!(!(key)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("key"), "../src/libsystemd/sd-device/sd-device.c" , 448, __PRETTY_FUNCTION__); } while (0); |
| 449 | assert(value)do { if ((__builtin_expect(!!(!(value)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("value"), "../src/libsystemd/sd-device/sd-device.c" , 449, __PRETTY_FUNCTION__); } while (0); |
| 450 | assert(major)do { if ((__builtin_expect(!!(!(major)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("major"), "../src/libsystemd/sd-device/sd-device.c" , 450, __PRETTY_FUNCTION__); } while (0); |
| 451 | assert(minor)do { if ((__builtin_expect(!!(!(minor)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("minor"), "../src/libsystemd/sd-device/sd-device.c" , 451, __PRETTY_FUNCTION__); } while (0); |
| 452 | |
| 453 | if (streq(key, "DEVTYPE")(strcmp((key),("DEVTYPE")) == 0)) { |
| 454 | r = device_set_devtype(device, value); |
| 455 | if (r < 0) |
| 456 | return r; |
| 457 | } else if (streq(key, "IFINDEX")(strcmp((key),("IFINDEX")) == 0)) { |
| 458 | r = device_set_ifindex(device, value); |
| 459 | if (r < 0) |
| 460 | return r; |
| 461 | } else if (streq(key, "DEVNAME")(strcmp((key),("DEVNAME")) == 0)) { |
| 462 | r = device_set_devname(device, value); |
| 463 | if (r < 0) |
| 464 | return r; |
| 465 | } else if (streq(key, "DEVMODE")(strcmp((key),("DEVMODE")) == 0)) { |
| 466 | r = device_set_devmode(device, value); |
| 467 | if (r < 0) |
| 468 | return r; |
| 469 | } else if (streq(key, "MAJOR")(strcmp((key),("MAJOR")) == 0)) |
| 470 | *major = value; |
| 471 | else if (streq(key, "MINOR")(strcmp((key),("MINOR")) == 0)) |
| 472 | *minor = value; |
| 473 | else { |
| 474 | r = device_add_property_internal(device, key, value); |
| 475 | if (r < 0) |
| 476 | return r; |
| 477 | } |
| 478 | |
| 479 | return 0; |
| 480 | } |
| 481 | |
| 482 | int device_read_uevent_file(sd_device *device) { |
| 483 | _cleanup_free___attribute__((cleanup(freep))) char *uevent = NULL((void*)0); |
| 484 | const char *syspath, *key = NULL((void*)0), *value = NULL((void*)0), *major = NULL((void*)0), *minor = NULL((void*)0); |
| 485 | char *path; |
| 486 | size_t uevent_len; |
| 487 | unsigned i; |
| 488 | int r; |
| 489 | |
| 490 | enum { |
| 491 | PRE_KEY, |
| 492 | KEY, |
| 493 | PRE_VALUE, |
| 494 | VALUE, |
| 495 | INVALID_LINE, |
| 496 | } state = PRE_KEY; |
| 497 | |
| 498 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 498, __PRETTY_FUNCTION__); } while (0); |
| 499 | |
| 500 | if (device->uevent_loaded || device->sealed) |
| 501 | return 0; |
| 502 | |
| 503 | device->uevent_loaded = true1; |
| 504 | |
| 505 | r = sd_device_get_syspath(device, &syspath); |
| 506 | if (r < 0) |
| 507 | return r; |
| 508 | |
| 509 | path = strjoina(syspath, "/uevent")({ const char *_appendees_[] = { syspath, "/uevent" }; char * _d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 510 | |
| 511 | r = read_full_file(path, &uevent, &uevent_len); |
| 512 | if (r == -EACCES13) |
| 513 | /* empty uevent files may be write-only */ |
| 514 | return 0; |
| 515 | else if (r == -ENOENT2) |
| 516 | /* some devices may not have uevent files, see set_syspath() */ |
| 517 | return 0; |
| 518 | else if (r < 0) { |
| 519 | log_debug_errno(r, "sd-device: failed to read uevent file '%s': %m", path)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 519, __func__, "sd-device: failed to read uevent file '%s': %m" , path) : -abs(_e); }); |
| 520 | return r; |
| 521 | } |
| 522 | |
| 523 | for (i = 0; i < uevent_len; i++) |
| 524 | switch (state) { |
| 525 | case PRE_KEY: |
| 526 | if (!strchr(NEWLINE"\n\r", uevent[i])) { |
| 527 | key = &uevent[i]; |
| 528 | |
| 529 | state = KEY; |
| 530 | } |
| 531 | |
| 532 | break; |
| 533 | case KEY: |
| 534 | if (uevent[i] == '=') { |
| 535 | uevent[i] = '\0'; |
| 536 | |
| 537 | state = PRE_VALUE; |
| 538 | } else if (strchr(NEWLINE"\n\r", uevent[i])) { |
| 539 | uevent[i] = '\0'; |
| 540 | log_debug("sd-device: ignoring invalid uevent line '%s'", key)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 540, __func__, "sd-device: ignoring invalid uevent line '%s'" , key) : -abs(_e); }); |
| 541 | |
| 542 | state = PRE_KEY; |
| 543 | } |
| 544 | |
| 545 | break; |
| 546 | case PRE_VALUE: |
| 547 | value = &uevent[i]; |
| 548 | state = VALUE; |
| 549 | |
| 550 | _fallthrough_; /* to handle empty property */ |
| 551 | case VALUE: |
| 552 | if (strchr(NEWLINE"\n\r", uevent[i])) { |
| 553 | uevent[i] = '\0'; |
| 554 | |
| 555 | r = handle_uevent_line(device, key, value, &major, &minor); |
| 556 | if (r < 0) |
| 557 | log_debug_errno(r, "sd-device: failed to handle uevent entry '%s=%s': %m", key, value)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 557, __func__, "sd-device: failed to handle uevent entry '%s=%s': %m" , key, value) : -abs(_e); }); |
| 558 | |
| 559 | state = PRE_KEY; |
| 560 | } |
| 561 | |
| 562 | break; |
| 563 | default: |
| 564 | assert_not_reached("invalid state when parsing uevent file")do { log_assert_failed_unreachable_realm(LOG_REALM_SYSTEMD, ( "invalid state when parsing uevent file"), "../src/libsystemd/sd-device/sd-device.c" , 564, __PRETTY_FUNCTION__); } while (0); |
| 565 | } |
| 566 | |
| 567 | if (major) { |
| 568 | r = device_set_devnum(device, major, minor); |
| 569 | if (r < 0) |
| 570 | log_debug_errno(r, "sd-device: could not set 'MAJOR=%s' or 'MINOR=%s' from '%s': %m", major, minor, path)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 570, __func__, "sd-device: could not set 'MAJOR=%s' or 'MINOR=%s' from '%s': %m" , major, minor, path) : -abs(_e); }); |
| 571 | } |
| 572 | |
| 573 | return 0; |
| 574 | } |
| 575 | |
| 576 | _public___attribute__ ((visibility("default"))) int sd_device_get_ifindex(sd_device *device, int *ifindex) { |
| 577 | int r; |
| 578 | |
| 579 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 579, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 580 | assert_return(ifindex, -EINVAL)do { if (!(((__builtin_expect(!!(ifindex),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ifindex"), "../src/libsystemd/sd-device/sd-device.c" , 580, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 581 | |
| 582 | r = device_read_uevent_file(device); |
| 583 | if (r < 0) |
| 584 | return r; |
| 585 | |
| 586 | *ifindex = device->ifindex; |
| 587 | |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | _public___attribute__ ((visibility("default"))) int sd_device_new_from_device_id(sd_device **ret, const char *id) { |
| 592 | int r; |
| 593 | |
| 594 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 594, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 595 | assert_return(id, -EINVAL)do { if (!(((__builtin_expect(!!(id),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("id"), "../src/libsystemd/sd-device/sd-device.c" , 595, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 596 | |
| 597 | switch (id[0]) { |
| 598 | case 'b': |
| 599 | case 'c': |
| 600 | { |
| 601 | char type; |
| 602 | int maj, min; |
| 603 | |
| 604 | r = sscanf(id, "%c%i:%i", &type, &maj, &min); |
| 605 | if (r != 3) |
| 606 | return -EINVAL22; |
| 607 | |
| 608 | return sd_device_new_from_devnum(ret, type, makedev(maj, min)gnu_dev_makedev (maj, min)); |
| 609 | } |
| 610 | case 'n': |
| 611 | { |
| 612 | _cleanup_(sd_device_unrefp)__attribute__((cleanup(sd_device_unrefp))) sd_device *device = NULL((void*)0); |
| 613 | _cleanup_close___attribute__((cleanup(closep))) int sk = -1; |
| 614 | struct ifreq ifr = {}; |
| 615 | int ifindex; |
| 616 | |
| 617 | r = parse_ifindex(&id[1], &ifr.ifr_ifindexifr_ifru.ifru_ivalue); |
| 618 | if (r < 0) |
| 619 | return r; |
| 620 | |
| 621 | sk = socket_ioctl_fd(); |
| 622 | if (sk < 0) |
| 623 | return sk; |
| 624 | |
| 625 | r = ioctl(sk, SIOCGIFNAME0x8910, &ifr); |
| 626 | if (r < 0) |
| 627 | return -errno(*__errno_location ()); |
| 628 | |
| 629 | r = sd_device_new_from_subsystem_sysname(&device, "net", ifr.ifr_nameifr_ifrn.ifrn_name); |
| 630 | if (r < 0) |
| 631 | return r; |
| 632 | |
| 633 | r = sd_device_get_ifindex(device, &ifindex); |
| 634 | if (r < 0) |
| 635 | return r; |
| 636 | |
| 637 | /* this is racey, so we might end up with the wrong device */ |
| 638 | if (ifr.ifr_ifindexifr_ifru.ifru_ivalue != ifindex) |
| 639 | return -ENODEV19; |
| 640 | |
| 641 | *ret = TAKE_PTR(device)({ typeof(device) _ptr_ = (device); (device) = ((void*)0); _ptr_ ; }); |
| 642 | |
| 643 | return 0; |
| 644 | } |
| 645 | case '+': |
| 646 | { |
| 647 | char subsys[PATH_MAX4096]; |
| 648 | char *sysname; |
| 649 | |
| 650 | (void)strscpy(subsys, sizeof(subsys), id + 1); |
| 651 | sysname = strchr(subsys, ':'); |
| 652 | if (!sysname) |
| 653 | return -EINVAL22; |
| 654 | |
| 655 | sysname[0] = '\0'; |
| 656 | sysname++; |
| 657 | |
| 658 | return sd_device_new_from_subsystem_sysname(ret, subsys, sysname); |
| 659 | } |
| 660 | default: |
| 661 | return -EINVAL22; |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | _public___attribute__ ((visibility("default"))) int sd_device_get_syspath(sd_device *device, const char **ret) { |
| 666 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 666, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 667 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 667, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 668 | |
| 669 | assert(path_startswith(device->syspath, "/sys/"))do { if ((__builtin_expect(!!(!(path_startswith(device->syspath , "/sys/"))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ( "path_startswith(device->syspath, \"/sys/\")"), "../src/libsystemd/sd-device/sd-device.c" , 669, __PRETTY_FUNCTION__); } while (0); |
| 670 | |
| 671 | *ret = device->syspath; |
| 672 | |
| 673 | return 0; |
| 674 | } |
| 675 | |
| 676 | static int device_new_from_child(sd_device **ret, sd_device *child) { |
| 677 | _cleanup_free___attribute__((cleanup(freep))) char *path = NULL((void*)0); |
| 678 | const char *subdir, *syspath; |
| 679 | int r; |
| 680 | |
| 681 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 681, __PRETTY_FUNCTION__); } while (0); |
| 682 | assert(child)do { if ((__builtin_expect(!!(!(child)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("child"), "../src/libsystemd/sd-device/sd-device.c" , 682, __PRETTY_FUNCTION__); } while (0); |
| 683 | |
| 684 | r = sd_device_get_syspath(child, &syspath); |
| 685 | if (r < 0) |
| 686 | return r; |
| 687 | |
| 688 | path = strdup(syspath); |
| 689 | if (!path) |
| 690 | return -ENOMEM12; |
| 691 | subdir = path + STRLEN("/sys")(sizeof("""/sys""") - 1); |
| 692 | |
| 693 | for (;;) { |
| 694 | char *pos; |
| 695 | |
| 696 | pos = strrchr(subdir, '/'); |
| 697 | if (!pos || pos < subdir + 2) |
| 698 | break; |
| 699 | |
| 700 | *pos = '\0'; |
| 701 | |
| 702 | r = sd_device_new_from_syspath(ret, path); |
| 703 | if (r < 0) |
| 704 | continue; |
| 705 | |
| 706 | return 0; |
| 707 | } |
| 708 | |
| 709 | return -ENODEV19; |
| 710 | } |
| 711 | |
| 712 | _public___attribute__ ((visibility("default"))) int sd_device_get_parent(sd_device *child, sd_device **ret) { |
| 713 | |
| 714 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 714, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 715 | assert_return(child, -EINVAL)do { if (!(((__builtin_expect(!!(child),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("child"), "../src/libsystemd/sd-device/sd-device.c" , 715, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 716 | |
| 717 | if (!child->parent_set) { |
| 718 | child->parent_set = true1; |
| 719 | |
| 720 | (void)device_new_from_child(&child->parent, child); |
| 721 | } |
| 722 | |
| 723 | if (!child->parent) |
| 724 | return -ENOENT2; |
| 725 | |
| 726 | *ret = child->parent; |
| 727 | |
| 728 | return 0; |
| 729 | } |
| 730 | |
| 731 | int device_set_subsystem(sd_device *device, const char *_subsystem) { |
| 732 | _cleanup_free___attribute__((cleanup(freep))) char *subsystem = NULL((void*)0); |
| 733 | int r; |
| 734 | |
| 735 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 735, __PRETTY_FUNCTION__); } while (0); |
| 736 | assert(_subsystem)do { if ((__builtin_expect(!!(!(_subsystem)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_subsystem"), "../src/libsystemd/sd-device/sd-device.c" , 736, __PRETTY_FUNCTION__); } while (0); |
| 737 | |
| 738 | subsystem = strdup(_subsystem); |
| 739 | if (!subsystem) |
| 740 | return -ENOMEM12; |
| 741 | |
| 742 | r = device_add_property_internal(device, "SUBSYSTEM", subsystem); |
| 743 | if (r < 0) |
| 744 | return r; |
| 745 | |
| 746 | free_and_replace(device->subsystem, subsystem)({ free(device->subsystem); (device->subsystem) = (subsystem ); (subsystem) = ((void*)0); 0; }); |
| 747 | |
| 748 | device->subsystem_set = true1; |
| 749 | |
| 750 | return 0; |
| 751 | } |
| 752 | |
| 753 | static int device_set_drivers_subsystem(sd_device *device, const char *_subsystem) { |
| 754 | _cleanup_free___attribute__((cleanup(freep))) char *subsystem = NULL((void*)0); |
| 755 | int r; |
| 756 | |
| 757 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 757, __PRETTY_FUNCTION__); } while (0); |
| 758 | assert(_subsystem)do { if ((__builtin_expect(!!(!(_subsystem)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_subsystem"), "../src/libsystemd/sd-device/sd-device.c" , 758, __PRETTY_FUNCTION__); } while (0); |
| 759 | assert(*_subsystem)do { if ((__builtin_expect(!!(!(*_subsystem)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("*_subsystem"), "../src/libsystemd/sd-device/sd-device.c" , 759, __PRETTY_FUNCTION__); } while (0); |
| 760 | |
| 761 | subsystem = strdup(_subsystem); |
| 762 | if (!subsystem) |
| 763 | return -ENOMEM12; |
| 764 | |
| 765 | r = device_set_subsystem(device, "drivers"); |
| 766 | if (r < 0) |
| 767 | return r; |
| 768 | |
| 769 | free_and_replace(device->driver_subsystem, subsystem)({ free(device->driver_subsystem); (device->driver_subsystem ) = (subsystem); (subsystem) = ((void*)0); 0; }); |
| 770 | |
| 771 | return 0; |
| 772 | } |
| 773 | |
| 774 | _public___attribute__ ((visibility("default"))) int sd_device_get_subsystem(sd_device *device, const char **ret) { |
| 775 | const char *syspath, *drivers = NULL((void*)0); |
| 776 | int r; |
| 777 | |
| 778 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 778, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 779 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 779, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 780 | |
| 781 | r = sd_device_get_syspath(device, &syspath); |
| 782 | if (r < 0) |
| 783 | return r; |
| 784 | |
| 785 | if (!device->subsystem_set) { |
| 786 | _cleanup_free___attribute__((cleanup(freep))) char *subsystem = NULL((void*)0); |
| 787 | char *path; |
| 788 | |
| 789 | /* read 'subsystem' link */ |
| 790 | path = strjoina(syspath, "/subsystem")({ const char *_appendees_[] = { syspath, "/subsystem" }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 791 | r = readlink_value(path, &subsystem); |
| 792 | if (r >= 0) |
| 793 | r = device_set_subsystem(device, subsystem); |
| 794 | /* use implicit names */ |
| 795 | else if (path_startswith(device->devpath, "/module/")) |
| 796 | r = device_set_subsystem(device, "module"); |
| 797 | else if (!(drivers = strstr(syspath, "/drivers/")) && |
| 798 | (path_startswith(device->devpath, "/subsystem/") || |
| 799 | path_startswith(device->devpath, "/class/") || |
| 800 | path_startswith(device->devpath, "/bus/"))) |
| 801 | r = device_set_subsystem(device, "subsystem"); |
| 802 | if (r < 0 && r != -ENOENT2) |
| 803 | return log_debug_errno(r, "sd-device: could not set subsystem for %s: %m", device->devpath)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 803, __func__, "sd-device: could not set subsystem for %s: %m" , device->devpath) : -abs(_e); }); |
| 804 | |
| 805 | device->subsystem_set = true1; |
| 806 | } else if (!device->driver_subsystem_set) |
| 807 | drivers = strstr(syspath, "/drivers/"); |
| 808 | |
| 809 | if (!device->driver_subsystem_set) { |
| 810 | if (drivers) { |
| 811 | _cleanup_free___attribute__((cleanup(freep))) char *subpath = NULL((void*)0); |
| 812 | |
| 813 | subpath = strndup(syspath, drivers - syspath); |
| 814 | if (!subpath) |
| 815 | r = -ENOMEM12; |
| 816 | else { |
| 817 | const char *subsys; |
| 818 | |
| 819 | subsys = strrchr(subpath, '/'); |
| 820 | if (!subsys) |
| 821 | r = -EINVAL22; |
| 822 | else |
| 823 | r = device_set_drivers_subsystem(device, subsys + 1); |
| 824 | } |
| 825 | if (r < 0 && r != -ENOENT2) |
| 826 | return log_debug_errno(r, "sd-device: could not set subsystem for driver %s: %m", device->devpath)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 826, __func__, "sd-device: could not set subsystem for driver %s: %m" , device->devpath) : -abs(_e); }); |
| 827 | } |
| 828 | |
| 829 | device->driver_subsystem_set = true1; |
| 830 | } |
| 831 | |
| 832 | if (!device->subsystem) |
| 833 | return -ENOENT2; |
| 834 | |
| 835 | *ret = device->subsystem; |
| 836 | |
| 837 | return 0; |
| 838 | } |
| 839 | |
| 840 | _public___attribute__ ((visibility("default"))) int sd_device_get_devtype(sd_device *device, const char **devtype) { |
| 841 | int r; |
| 842 | |
| 843 | assert(devtype)do { if ((__builtin_expect(!!(!(devtype)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("devtype"), "../src/libsystemd/sd-device/sd-device.c" , 843, __PRETTY_FUNCTION__); } while (0); |
| 844 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 844, __PRETTY_FUNCTION__); } while (0); |
| 845 | |
| 846 | r = device_read_uevent_file(device); |
| 847 | if (r < 0) |
| 848 | return r; |
| 849 | |
| 850 | *devtype = device->devtype; |
| 851 | |
| 852 | return 0; |
| 853 | } |
| 854 | |
| 855 | _public___attribute__ ((visibility("default"))) int sd_device_get_parent_with_subsystem_devtype(sd_device *child, const char *subsystem, const char *devtype, sd_device **ret) { |
| 856 | sd_device *parent = NULL((void*)0); |
| 857 | int r; |
| 858 | |
| 859 | assert_return(child, -EINVAL)do { if (!(((__builtin_expect(!!(child),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("child"), "../src/libsystemd/sd-device/sd-device.c" , 859, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 860 | assert_return(subsystem, -EINVAL)do { if (!(((__builtin_expect(!!(subsystem),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("subsystem"), "../src/libsystemd/sd-device/sd-device.c" , 860, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 861 | |
| 862 | r = sd_device_get_parent(child, &parent); |
| 863 | while (r >= 0) { |
| 864 | const char *parent_subsystem = NULL((void*)0); |
| 865 | const char *parent_devtype = NULL((void*)0); |
| 866 | |
| 867 | (void)sd_device_get_subsystem(parent, &parent_subsystem); |
| 868 | if (streq_ptr(parent_subsystem, subsystem)) { |
| 869 | if (!devtype) |
| 870 | break; |
| 871 | |
| 872 | (void)sd_device_get_devtype(parent, &parent_devtype); |
| 873 | if (streq_ptr(parent_devtype, devtype)) |
| 874 | break; |
| 875 | } |
| 876 | r = sd_device_get_parent(parent, &parent); |
| 877 | } |
| 878 | |
| 879 | if (r < 0) |
| 880 | return r; |
| 881 | |
| 882 | *ret = parent; |
| 883 | |
| 884 | return 0; |
| 885 | } |
| 886 | |
| 887 | _public___attribute__ ((visibility("default"))) int sd_device_get_devnum(sd_device *device, dev_t *devnum) { |
| 888 | int r; |
| 889 | |
| 890 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 890, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 891 | assert_return(devnum, -EINVAL)do { if (!(((__builtin_expect(!!(devnum),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("devnum"), "../src/libsystemd/sd-device/sd-device.c" , 891, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 892 | |
| 893 | r = device_read_uevent_file(device); |
| 894 | if (r < 0) |
| 895 | return r; |
| 896 | |
| 897 | *devnum = device->devnum; |
| 898 | |
| 899 | return 0; |
| 900 | } |
| 901 | |
| 902 | int device_set_driver(sd_device *device, const char *_driver) { |
| 903 | _cleanup_free___attribute__((cleanup(freep))) char *driver = NULL((void*)0); |
| 904 | int r; |
| 905 | |
| 906 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 906, __PRETTY_FUNCTION__); } while (0); |
| 907 | assert(_driver)do { if ((__builtin_expect(!!(!(_driver)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_driver"), "../src/libsystemd/sd-device/sd-device.c" , 907, __PRETTY_FUNCTION__); } while (0); |
| 908 | |
| 909 | driver = strdup(_driver); |
| 910 | if (!driver) |
| 911 | return -ENOMEM12; |
| 912 | |
| 913 | r = device_add_property_internal(device, "DRIVER", driver); |
| 914 | if (r < 0) |
| 915 | return r; |
| 916 | |
| 917 | free_and_replace(device->driver, driver)({ free(device->driver); (device->driver) = (driver); ( driver) = ((void*)0); 0; }); |
| 918 | |
| 919 | device->driver_set = true1; |
| 920 | |
| 921 | return 0; |
| 922 | } |
| 923 | |
| 924 | _public___attribute__ ((visibility("default"))) int sd_device_get_driver(sd_device *device, const char **ret) { |
| 925 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 925, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 926 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 926, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 927 | |
| 928 | if (!device->driver_set) { |
| 929 | _cleanup_free___attribute__((cleanup(freep))) char *driver = NULL((void*)0); |
| 930 | const char *syspath; |
| 931 | char *path; |
| 932 | int r; |
| 933 | |
| 934 | r = sd_device_get_syspath(device, &syspath); |
| 935 | if (r < 0) |
| 936 | return r; |
| 937 | |
| 938 | path = strjoina(syspath, "/driver")({ const char *_appendees_[] = { syspath, "/driver" }; char * _d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 939 | r = readlink_value(path, &driver); |
| 940 | if (r >= 0) { |
| 941 | r = device_set_driver(device, driver); |
| 942 | if (r < 0) |
| 943 | return log_debug_errno(r, "sd-device: could not set driver for %s: %m", device->devpath)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 943, __func__, "sd-device: could not set driver for %s: %m" , device->devpath) : -abs(_e); }); |
| 944 | } else if (r == -ENOENT2) |
| 945 | device->driver_set = true1; |
| 946 | else |
| 947 | return log_debug_errno(r, "sd-device: could not set driver for %s: %m", device->devpath)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 947, __func__, "sd-device: could not set driver for %s: %m" , device->devpath) : -abs(_e); }); |
| 948 | } |
| 949 | |
| 950 | if (!device->driver) |
| 951 | return -ENOENT2; |
| 952 | |
| 953 | *ret = device->driver; |
| 954 | |
| 955 | return 0; |
| 956 | } |
| 957 | |
| 958 | _public___attribute__ ((visibility("default"))) int sd_device_get_devpath(sd_device *device, const char **devpath) { |
| 959 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 959, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 960 | assert_return(devpath, -EINVAL)do { if (!(((__builtin_expect(!!(devpath),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("devpath"), "../src/libsystemd/sd-device/sd-device.c" , 960, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 961 | |
| 962 | assert(device->devpath)do { if ((__builtin_expect(!!(!(device->devpath)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device->devpath"), "../src/libsystemd/sd-device/sd-device.c" , 962, __PRETTY_FUNCTION__); } while (0); |
| 963 | assert(device->devpath[0] == '/')do { if ((__builtin_expect(!!(!(device->devpath[0] == '/') ),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("device->devpath[0] == '/'" ), "../src/libsystemd/sd-device/sd-device.c", 963, __PRETTY_FUNCTION__ ); } while (0); |
| 964 | |
| 965 | *devpath = device->devpath; |
| 966 | |
| 967 | return 0; |
| 968 | } |
| 969 | |
| 970 | _public___attribute__ ((visibility("default"))) int sd_device_get_devname(sd_device *device, const char **devname) { |
| 971 | int r; |
| 972 | |
| 973 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 973, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 974 | assert_return(devname, -EINVAL)do { if (!(((__builtin_expect(!!(devname),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("devname"), "../src/libsystemd/sd-device/sd-device.c" , 974, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 975 | |
| 976 | r = device_read_uevent_file(device); |
| 977 | if (r < 0) |
| 978 | return r; |
| 979 | |
| 980 | if (!device->devname) |
| 981 | return -ENOENT2; |
| 982 | |
| 983 | assert(path_startswith(device->devname, "/dev/"))do { if ((__builtin_expect(!!(!(path_startswith(device->devname , "/dev/"))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ( "path_startswith(device->devname, \"/dev/\")"), "../src/libsystemd/sd-device/sd-device.c" , 983, __PRETTY_FUNCTION__); } while (0); |
| 984 | |
| 985 | *devname = device->devname; |
| 986 | |
| 987 | return 0; |
| 988 | } |
| 989 | |
| 990 | static int device_set_sysname(sd_device *device) { |
| 991 | _cleanup_free___attribute__((cleanup(freep))) char *sysname = NULL((void*)0); |
| 992 | const char *sysnum = NULL((void*)0); |
| 993 | const char *pos; |
| 994 | size_t len = 0; |
| 995 | |
| 996 | pos = strrchr(device->devpath, '/'); |
| 997 | if (!pos) |
| 998 | return -EINVAL22; |
| 999 | pos++; |
| 1000 | |
| 1001 | /* devpath is not a root directory */ |
| 1002 | if (*pos == '\0' || pos <= device->devpath) |
| 1003 | return -EINVAL22; |
| 1004 | |
| 1005 | sysname = strdup(pos); |
| 1006 | if (!sysname) |
| 1007 | return -ENOMEM12; |
| 1008 | |
| 1009 | /* some devices have '!' in their name, change that to '/' */ |
| 1010 | while (sysname[len] != '\0') { |
| 1011 | if (sysname[len] == '!') |
| 1012 | sysname[len] = '/'; |
| 1013 | |
| 1014 | len++; |
| 1015 | } |
| 1016 | |
| 1017 | /* trailing number */ |
| 1018 | while (len > 0 && isdigit(sysname[--len])((*__ctype_b_loc ())[(int) ((sysname[--len]))] & (unsigned short int) _ISdigit)) |
| 1019 | sysnum = &sysname[len]; |
| 1020 | |
| 1021 | if (len == 0) |
| 1022 | sysnum = NULL((void*)0); |
| 1023 | |
| 1024 | free_and_replace(device->sysname, sysname)({ free(device->sysname); (device->sysname) = (sysname) ; (sysname) = ((void*)0); 0; }); |
| 1025 | |
| 1026 | device->sysnum = sysnum; |
| 1027 | |
| 1028 | device->sysname_set = true1; |
| 1029 | |
| 1030 | return 0; |
| 1031 | } |
| 1032 | |
| 1033 | _public___attribute__ ((visibility("default"))) int sd_device_get_sysname(sd_device *device, const char **ret) { |
| 1034 | int r; |
| 1035 | |
| 1036 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1036, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1037 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 1037, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1038 | |
| 1039 | if (!device->sysname_set) { |
| 1040 | r = device_set_sysname(device); |
| 1041 | if (r < 0) |
| 1042 | return r; |
| 1043 | } |
| 1044 | |
| 1045 | assert_return(device->sysname, -ENOENT)do { if (!(((__builtin_expect(!!(device->sysname),1))) ? ( 1) : (log_assert_failed_return_realm(LOG_REALM_SYSTEMD, ("device->sysname" ), "../src/libsystemd/sd-device/sd-device.c", 1045, __PRETTY_FUNCTION__ ), 0))) return (-2); } while (0); |
| 1046 | |
| 1047 | *ret = device->sysname; |
| 1048 | |
| 1049 | return 0; |
| 1050 | } |
| 1051 | |
| 1052 | _public___attribute__ ((visibility("default"))) int sd_device_get_sysnum(sd_device *device, const char **ret) { |
| 1053 | int r; |
| 1054 | |
| 1055 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1055, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1056 | assert_return(ret, -EINVAL)do { if (!(((__builtin_expect(!!(ret),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 1056, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1057 | |
| 1058 | if (!device->sysname_set) { |
| 1059 | r = device_set_sysname(device); |
| 1060 | if (r < 0) |
| 1061 | return r; |
| 1062 | } |
| 1063 | |
| 1064 | *ret = device->sysnum; |
| 1065 | |
| 1066 | return 0; |
| 1067 | } |
| 1068 | |
| 1069 | static bool_Bool is_valid_tag(const char *tag) { |
| 1070 | assert(tag)do { if ((__builtin_expect(!!(!(tag)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("tag"), "../src/libsystemd/sd-device/sd-device.c" , 1070, __PRETTY_FUNCTION__); } while (0); |
| 1071 | |
| 1072 | return !strchr(tag, ':') && !strchr(tag, ' '); |
| 1073 | } |
| 1074 | |
| 1075 | int device_add_tag(sd_device *device, const char *tag) { |
| 1076 | int r; |
| 1077 | |
| 1078 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1078, __PRETTY_FUNCTION__); } while (0); |
| 1079 | assert(tag)do { if ((__builtin_expect(!!(!(tag)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("tag"), "../src/libsystemd/sd-device/sd-device.c" , 1079, __PRETTY_FUNCTION__); } while (0); |
| 1080 | |
| 1081 | if (!is_valid_tag(tag)) |
| 1082 | return -EINVAL22; |
| 1083 | |
| 1084 | r = set_ensure_allocated(&device->tags, &string_hash_ops)internal_set_ensure_allocated(&device->tags, &string_hash_ops ); |
| 1085 | if (r < 0) |
| 1086 | return r; |
| 1087 | |
| 1088 | r = set_put_strdup(device->tags, tag); |
| 1089 | if (r < 0) |
| 1090 | return r; |
| 1091 | |
| 1092 | device->tags_generation++; |
| 1093 | device->property_tags_outdated = true1; |
| 1094 | |
| 1095 | return 0; |
| 1096 | } |
| 1097 | |
| 1098 | int device_add_devlink(sd_device *device, const char *devlink) { |
| 1099 | int r; |
| 1100 | |
| 1101 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1101, __PRETTY_FUNCTION__); } while (0); |
| 1102 | assert(devlink)do { if ((__builtin_expect(!!(!(devlink)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("devlink"), "../src/libsystemd/sd-device/sd-device.c" , 1102, __PRETTY_FUNCTION__); } while (0); |
| 1103 | |
| 1104 | r = set_ensure_allocated(&device->devlinks, &string_hash_ops)internal_set_ensure_allocated(&device->devlinks, & string_hash_ops ); |
| 1105 | if (r < 0) |
| 1106 | return r; |
| 1107 | |
| 1108 | r = set_put_strdup(device->devlinks, devlink); |
| 1109 | if (r < 0) |
| 1110 | return r; |
| 1111 | |
| 1112 | device->devlinks_generation++; |
| 1113 | device->property_devlinks_outdated = true1; |
| 1114 | |
| 1115 | return 0; |
| 1116 | } |
| 1117 | |
| 1118 | static int device_add_property_internal_from_string(sd_device *device, const char *str) { |
| 1119 | _cleanup_free___attribute__((cleanup(freep))) char *key = NULL((void*)0); |
| 1120 | char *value; |
| 1121 | |
| 1122 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1122, __PRETTY_FUNCTION__); } while (0); |
| 1123 | assert(str)do { if ((__builtin_expect(!!(!(str)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("str"), "../src/libsystemd/sd-device/sd-device.c" , 1123, __PRETTY_FUNCTION__); } while (0); |
| 1124 | |
| 1125 | key = strdup(str); |
| 1126 | if (!key) |
| 1127 | return -ENOMEM12; |
| 1128 | |
| 1129 | value = strchr(key, '='); |
| 1130 | if (!value) |
| 1131 | return -EINVAL22; |
| 1132 | |
| 1133 | *value = '\0'; |
| 1134 | |
| 1135 | if (isempty(++value)) |
| 1136 | value = NULL((void*)0); |
| 1137 | |
| 1138 | return device_add_property_internal(device, key, value); |
| 1139 | } |
| 1140 | |
| 1141 | int device_set_usec_initialized(sd_device *device, const char *initialized) { |
| 1142 | uint64_t usec_initialized; |
| 1143 | int r; |
| 1144 | |
| 1145 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1145, __PRETTY_FUNCTION__); } while (0); |
| 1146 | assert(initialized)do { if ((__builtin_expect(!!(!(initialized)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("initialized"), "../src/libsystemd/sd-device/sd-device.c" , 1146, __PRETTY_FUNCTION__); } while (0); |
| 1147 | |
| 1148 | r = safe_atou64(initialized, &usec_initialized); |
| 1149 | if (r < 0) |
| 1150 | return r; |
| 1151 | |
| 1152 | r = device_add_property_internal(device, "USEC_INITIALIZED", initialized); |
| 1153 | if (r < 0) |
| 1154 | return r; |
| 1155 | |
| 1156 | device->usec_initialized = usec_initialized; |
| 1157 | |
| 1158 | return 0; |
| 1159 | } |
| 1160 | |
| 1161 | static int handle_db_line(sd_device *device, char key, const char *value) { |
| 1162 | char *path; |
| 1163 | int r; |
| 1164 | |
| 1165 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1165, __PRETTY_FUNCTION__); } while (0); |
| 1166 | assert(value)do { if ((__builtin_expect(!!(!(value)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("value"), "../src/libsystemd/sd-device/sd-device.c" , 1166, __PRETTY_FUNCTION__); } while (0); |
| 1167 | |
| 1168 | switch (key) { |
| 1169 | case 'G': |
| 1170 | r = device_add_tag(device, value); |
| 1171 | if (r < 0) |
| 1172 | return r; |
| 1173 | |
| 1174 | break; |
| 1175 | case 'S': |
| 1176 | path = strjoina("/dev/", value)({ const char *_appendees_[] = { "/dev/", value }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof (_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 1177 | r = device_add_devlink(device, path); |
| 1178 | if (r < 0) |
| 1179 | return r; |
| 1180 | |
| 1181 | break; |
| 1182 | case 'E': |
| 1183 | r = device_add_property_internal_from_string(device, value); |
| 1184 | if (r < 0) |
| 1185 | return r; |
| 1186 | |
| 1187 | break; |
| 1188 | case 'I': |
| 1189 | r = device_set_usec_initialized(device, value); |
| 1190 | if (r < 0) |
| 1191 | return r; |
| 1192 | |
| 1193 | break; |
| 1194 | case 'L': |
| 1195 | r = safe_atoi(value, &device->devlink_priority); |
| 1196 | if (r < 0) |
| 1197 | return r; |
| 1198 | |
| 1199 | break; |
| 1200 | case 'W': |
| 1201 | r = safe_atoi(value, &device->watch_handle); |
| 1202 | if (r < 0) |
| 1203 | return r; |
| 1204 | |
| 1205 | break; |
| 1206 | default: |
| 1207 | log_debug("device db: unknown key '%c'", key)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 1207, __func__, "device db: unknown key '%c'" , key) : -abs(_e); }); |
| 1208 | } |
| 1209 | |
| 1210 | return 0; |
| 1211 | } |
| 1212 | |
| 1213 | int device_get_id_filename(sd_device *device, const char **ret) { |
| 1214 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1214, __PRETTY_FUNCTION__); } while (0); |
| 1215 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/libsystemd/sd-device/sd-device.c" , 1215, __PRETTY_FUNCTION__); } while (0); |
| 1216 | |
| 1217 | if (!device->id_filename) { |
| 1218 | _cleanup_free___attribute__((cleanup(freep))) char *id = NULL((void*)0); |
| 1219 | const char *subsystem; |
| 1220 | dev_t devnum; |
| 1221 | int ifindex, r; |
| 1222 | |
| 1223 | r = sd_device_get_subsystem(device, &subsystem); |
| 1224 | if (r < 0) |
| 1225 | return r; |
| 1226 | |
| 1227 | r = sd_device_get_devnum(device, &devnum); |
| 1228 | if (r < 0) |
| 1229 | return r; |
| 1230 | |
| 1231 | r = sd_device_get_ifindex(device, &ifindex); |
| 1232 | if (r < 0) |
| 1233 | return r; |
| 1234 | |
| 1235 | if (major(devnum)gnu_dev_major (devnum) > 0) { |
| 1236 | assert(subsystem)do { if ((__builtin_expect(!!(!(subsystem)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("subsystem"), "../src/libsystemd/sd-device/sd-device.c" , 1236, __PRETTY_FUNCTION__); } while (0); |
| 1237 | |
| 1238 | /* use dev_t — b259:131072, c254:0 */ |
| 1239 | r = asprintf(&id, "%c%u:%u", |
| 1240 | streq(subsystem, "block")(strcmp((subsystem),("block")) == 0) ? 'b' : 'c', |
| 1241 | major(devnum)gnu_dev_major (devnum), minor(devnum)gnu_dev_minor (devnum)); |
| 1242 | if (r < 0) |
| 1243 | return -ENOMEM12; |
| 1244 | } else if (ifindex > 0) { |
| 1245 | /* use netdev ifindex — n3 */ |
| 1246 | r = asprintf(&id, "n%u", ifindex); |
| 1247 | if (r < 0) |
| 1248 | return -ENOMEM12; |
| 1249 | } else { |
| 1250 | /* use $subsys:$sysname — pci:0000:00:1f.2 |
| 1251 | * sysname() has '!' translated, get it from devpath |
| 1252 | */ |
| 1253 | const char *sysname; |
| 1254 | |
| 1255 | sysname = basename(device->devpath); |
| 1256 | if (!sysname) |
| 1257 | return -EINVAL22; |
| 1258 | |
| 1259 | if (!subsystem) |
| 1260 | return -EINVAL22; |
| 1261 | |
| 1262 | if (streq(subsystem, "drivers")(strcmp((subsystem),("drivers")) == 0)) { |
| 1263 | /* the 'drivers' pseudo-subsystem is special, and needs the real subsystem |
| 1264 | * encoded as well */ |
| 1265 | r = asprintf(&id, "+drivers:%s:%s", device->driver_subsystem, sysname); |
| 1266 | if (r < 0) |
| 1267 | return -ENOMEM12; |
| 1268 | } else { |
| 1269 | r = asprintf(&id, "+%s:%s", subsystem, sysname); |
| 1270 | if (r < 0) |
| 1271 | return -ENOMEM12; |
| 1272 | } |
| 1273 | } |
| 1274 | |
| 1275 | device->id_filename = TAKE_PTR(id)({ typeof(id) _ptr_ = (id); (id) = ((void*)0); _ptr_; }); |
| 1276 | } |
| 1277 | |
| 1278 | *ret = device->id_filename; |
| 1279 | |
| 1280 | return 0; |
| 1281 | } |
| 1282 | |
| 1283 | int device_read_db_aux(sd_device *device, bool_Bool force) { |
| 1284 | _cleanup_free___attribute__((cleanup(freep))) char *db = NULL((void*)0); |
| 1285 | char *path; |
| 1286 | const char *id, *value; |
| 1287 | char key; |
| 1288 | size_t db_len; |
| 1289 | unsigned i; |
| 1290 | int r; |
| 1291 | |
| 1292 | enum { |
| 1293 | PRE_KEY, |
| 1294 | KEY, |
| 1295 | PRE_VALUE, |
| 1296 | VALUE, |
| 1297 | INVALID_LINE, |
| 1298 | } state = PRE_KEY; |
| 1299 | |
| 1300 | if (device->db_loaded || (!force && device->sealed)) |
| 1301 | return 0; |
| 1302 | |
| 1303 | device->db_loaded = true1; |
| 1304 | |
| 1305 | r = device_get_id_filename(device, &id); |
| 1306 | if (r < 0) |
| 1307 | return r; |
| 1308 | |
| 1309 | path = strjoina("/run/udev/data/", id)({ const char *_appendees_[] = { "/run/udev/data/", id }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 1310 | |
| 1311 | r = read_full_file(path, &db, &db_len); |
| 1312 | if (r < 0) { |
| 1313 | if (r == -ENOENT2) |
| 1314 | return 0; |
| 1315 | else |
| 1316 | return log_debug_errno(r, "sd-device: failed to read db '%s': %m", path)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 1316, __func__, "sd-device: failed to read db '%s': %m" , path) : -abs(_e); }); |
| 1317 | } |
| 1318 | |
| 1319 | /* devices with a database entry are initialized */ |
| 1320 | device->is_initialized = true1; |
| 1321 | |
| 1322 | for (i = 0; i < db_len; i++) { |
| 1323 | switch (state) { |
| 1324 | case PRE_KEY: |
| 1325 | if (!strchr(NEWLINE"\n\r", db[i])) { |
| 1326 | key = db[i]; |
| 1327 | |
| 1328 | state = KEY; |
| 1329 | } |
| 1330 | |
| 1331 | break; |
| 1332 | case KEY: |
| 1333 | if (db[i] != ':') { |
| 1334 | log_debug("sd-device: ignoring invalid db entry with key '%c'", key)({ int _level = (((7))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 1334, __func__, "sd-device: ignoring invalid db entry with key '%c'" , key) : -abs(_e); }); |
| 1335 | |
| 1336 | state = INVALID_LINE; |
| 1337 | } else { |
| 1338 | db[i] = '\0'; |
| 1339 | |
| 1340 | state = PRE_VALUE; |
| 1341 | } |
| 1342 | |
| 1343 | break; |
| 1344 | case PRE_VALUE: |
| 1345 | value = &db[i]; |
| 1346 | |
| 1347 | state = VALUE; |
| 1348 | |
| 1349 | break; |
| 1350 | case INVALID_LINE: |
| 1351 | if (strchr(NEWLINE"\n\r", db[i])) |
| 1352 | state = PRE_KEY; |
| 1353 | |
| 1354 | break; |
| 1355 | case VALUE: |
| 1356 | if (strchr(NEWLINE"\n\r", db[i])) { |
| 1357 | db[i] = '\0'; |
| 1358 | r = handle_db_line(device, key, value); |
| 1359 | if (r < 0) |
| 1360 | log_debug_errno(r, "sd-device: failed to handle db entry '%c:%s': %m", key, value)({ int _level = ((7)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/libsystemd/sd-device/sd-device.c", 1360, __func__, "sd-device: failed to handle db entry '%c:%s': %m" , key, value) : -abs(_e); }); |
| 1361 | |
| 1362 | state = PRE_KEY; |
| 1363 | } |
| 1364 | |
| 1365 | break; |
| 1366 | default: |
| 1367 | assert_not_reached("invalid state when parsing db")do { log_assert_failed_unreachable_realm(LOG_REALM_SYSTEMD, ( "invalid state when parsing db"), "../src/libsystemd/sd-device/sd-device.c" , 1367, __PRETTY_FUNCTION__); } while (0); |
| 1368 | } |
| 1369 | } |
| 1370 | |
| 1371 | return 0; |
| 1372 | } |
| 1373 | |
| 1374 | static int device_read_db(sd_device *device) { |
| 1375 | return device_read_db_aux(device, false0); |
| 1376 | } |
| 1377 | |
| 1378 | _public___attribute__ ((visibility("default"))) int sd_device_get_is_initialized(sd_device *device, int *initialized) { |
| 1379 | int r; |
| 1380 | |
| 1381 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1381, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1382 | assert_return(initialized, -EINVAL)do { if (!(((__builtin_expect(!!(initialized),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("initialized"), "../src/libsystemd/sd-device/sd-device.c" , 1382, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1383 | |
| 1384 | r = device_read_db(device); |
| 1385 | if (r < 0) |
| 1386 | return r; |
| 1387 | |
| 1388 | *initialized = device->is_initialized; |
| 1389 | |
| 1390 | return 0; |
| 1391 | } |
| 1392 | |
| 1393 | _public___attribute__ ((visibility("default"))) int sd_device_get_usec_since_initialized(sd_device *device, uint64_t *usec) { |
| 1394 | usec_t now_ts; |
| 1395 | int r; |
| 1396 | |
| 1397 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1397, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1398 | assert_return(usec, -EINVAL)do { if (!(((__builtin_expect(!!(usec),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("usec"), "../src/libsystemd/sd-device/sd-device.c" , 1398, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1399 | |
| 1400 | r = device_read_db(device); |
| 1401 | if (r < 0) |
| 1402 | return r; |
| 1403 | |
| 1404 | if (!device->is_initialized) |
| 1405 | return -EBUSY16; |
| 1406 | |
| 1407 | if (!device->usec_initialized) |
| 1408 | return -ENODATA61; |
| 1409 | |
| 1410 | now_ts = now(clock_boottime_or_monotonic()); |
| 1411 | |
| 1412 | if (now_ts < device->usec_initialized) |
| 1413 | return -EIO5; |
| 1414 | |
| 1415 | *usec = now_ts - device->usec_initialized; |
| 1416 | |
| 1417 | return 0; |
| 1418 | } |
| 1419 | |
| 1420 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_tag_first(sd_device *device) { |
| 1421 | void *v; |
| 1422 | |
| 1423 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1423, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1424 | |
| 1425 | (void) device_read_db(device); |
| 1426 | |
| 1427 | device->tags_iterator_generation = device->tags_generation; |
| 1428 | device->tags_iterator = ITERATOR_FIRST((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .next_key = ( (void*)0) }); |
| 1429 | |
| 1430 | (void) set_iterate(device->tags, &device->tags_iterator, &v); |
| 1431 | return v; |
| 1432 | } |
| 1433 | |
| 1434 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_tag_next(sd_device *device) { |
| 1435 | void *v; |
| 1436 | |
| 1437 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1437, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1438 | |
| 1439 | (void) device_read_db(device); |
| 1440 | |
| 1441 | if (device->tags_iterator_generation != device->tags_generation) |
| 1442 | return NULL((void*)0); |
| 1443 | |
| 1444 | (void) set_iterate(device->tags, &device->tags_iterator, &v); |
| 1445 | return v; |
| 1446 | } |
| 1447 | |
| 1448 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_devlink_first(sd_device *device) { |
| 1449 | void *v; |
| 1450 | |
| 1451 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1451, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1452 | |
| 1453 | (void) device_read_db(device); |
| 1454 | |
| 1455 | device->devlinks_iterator_generation = device->devlinks_generation; |
| 1456 | device->devlinks_iterator = ITERATOR_FIRST((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .next_key = ( (void*)0) }); |
| 1457 | |
| 1458 | (void) set_iterate(device->devlinks, &device->devlinks_iterator, &v); |
| 1459 | return v; |
| 1460 | } |
| 1461 | |
| 1462 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_devlink_next(sd_device *device) { |
| 1463 | void *v; |
| 1464 | |
| 1465 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1465, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1466 | |
| 1467 | (void) device_read_db(device); |
| 1468 | |
| 1469 | if (device->devlinks_iterator_generation != device->devlinks_generation) |
| 1470 | return NULL((void*)0); |
| 1471 | |
| 1472 | (void) set_iterate(device->devlinks, &device->devlinks_iterator, &v); |
| 1473 | return v; |
| 1474 | } |
| 1475 | |
| 1476 | static int device_properties_prepare(sd_device *device) { |
| 1477 | int r; |
| 1478 | |
| 1479 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1479, __PRETTY_FUNCTION__); } while (0); |
| 1480 | |
| 1481 | r = device_read_uevent_file(device); |
| 1482 | if (r < 0) |
| 1483 | return r; |
| 1484 | |
| 1485 | r = device_read_db(device); |
| 1486 | if (r < 0) |
| 1487 | return r; |
| 1488 | |
| 1489 | if (device->property_devlinks_outdated) { |
| 1490 | _cleanup_free___attribute__((cleanup(freep))) char *devlinks = NULL((void*)0); |
| 1491 | size_t devlinks_allocated = 0, devlinks_len = 0; |
| 1492 | const char *devlink; |
| 1493 | |
| 1494 | for (devlink = sd_device_get_devlink_first(device); devlink; devlink = sd_device_get_devlink_next(device)) { |
| 1495 | char *e; |
| 1496 | |
| 1497 | if (!GREEDY_REALLOC(devlinks, devlinks_allocated, devlinks_len + strlen(devlink) + 2)greedy_realloc((void**) &(devlinks), &(devlinks_allocated ), (devlinks_len + strlen(devlink) + 2), sizeof((devlinks)[0] ))) |
| 1498 | return -ENOMEM12; |
| 1499 | if (devlinks_len > 0) |
| 1500 | stpcpy(devlinks + devlinks_len++, " "); |
| 1501 | e = stpcpy(devlinks + devlinks_len, devlink); |
| 1502 | devlinks_len = e - devlinks; |
| 1503 | } |
| 1504 | |
| 1505 | r = device_add_property_internal(device, "DEVLINKS", devlinks); |
| 1506 | if (r < 0) |
| 1507 | return r; |
| 1508 | |
| 1509 | device->property_devlinks_outdated = false0; |
| 1510 | } |
| 1511 | |
| 1512 | if (device->property_tags_outdated) { |
| 1513 | _cleanup_free___attribute__((cleanup(freep))) char *tags = NULL((void*)0); |
| 1514 | size_t tags_allocated = 0, tags_len = 0; |
| 1515 | const char *tag; |
| 1516 | |
| 1517 | if (!GREEDY_REALLOC(tags, tags_allocated, 2)greedy_realloc((void**) &(tags), &(tags_allocated), ( 2), sizeof((tags)[0]))) |
| 1518 | return -ENOMEM12; |
| 1519 | stpcpy(tags, ":"); |
| 1520 | tags_len++; |
| 1521 | |
| 1522 | for (tag = sd_device_get_tag_first(device); tag; tag = sd_device_get_tag_next(device)) { |
| 1523 | char *e; |
| 1524 | |
| 1525 | if (!GREEDY_REALLOC(tags, tags_allocated, tags_len + strlen(tag) + 2)greedy_realloc((void**) &(tags), &(tags_allocated), ( tags_len + strlen(tag) + 2), sizeof((tags)[0]))) |
| 1526 | return -ENOMEM12; |
| 1527 | e = stpcpy(stpcpy(tags + tags_len, tag), ":"); |
| 1528 | tags_len = e - tags; |
| 1529 | } |
| 1530 | |
| 1531 | r = device_add_property_internal(device, "TAGS", tags); |
| 1532 | if (r < 0) |
| 1533 | return r; |
| 1534 | |
| 1535 | device->property_tags_outdated = false0; |
| 1536 | } |
| 1537 | |
| 1538 | return 0; |
| 1539 | } |
| 1540 | |
| 1541 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_property_first(sd_device *device, const char **_value) { |
| 1542 | const char *key; |
| 1543 | const char *value; |
| 1544 | int r; |
| 1545 | |
| 1546 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1546, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1547 | |
| 1548 | r = device_properties_prepare(device); |
| 1549 | if (r < 0) |
| 1550 | return NULL((void*)0); |
| 1551 | |
| 1552 | device->properties_iterator_generation = device->properties_generation; |
| 1553 | device->properties_iterator = ITERATOR_FIRST((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .next_key = ( (void*)0) }); |
| 1554 | |
| 1555 | ordered_hashmap_iterate(device->properties, &device->properties_iterator, (void**)&value, (const void**)&key); |
| 1556 | |
| 1557 | if (_value) |
| 1558 | *_value = value; |
| 1559 | |
| 1560 | return key; |
| 1561 | } |
| 1562 | |
| 1563 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_property_next(sd_device *device, const char **_value) { |
| 1564 | const char *key; |
| 1565 | const char *value; |
| 1566 | int r; |
| 1567 | |
| 1568 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1568, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1569 | |
| 1570 | r = device_properties_prepare(device); |
| 1571 | if (r < 0) |
| 1572 | return NULL((void*)0); |
| 1573 | |
| 1574 | if (device->properties_iterator_generation != device->properties_generation) |
| 1575 | return NULL((void*)0); |
| 1576 | |
| 1577 | ordered_hashmap_iterate(device->properties, &device->properties_iterator, (void**)&value, (const void**)&key); |
| 1578 | |
| 1579 | if (_value) |
| 1580 | *_value = value; |
| 1581 | |
| 1582 | return key; |
| 1583 | } |
| 1584 | |
| 1585 | static int device_sysattrs_read_all(sd_device *device) { |
| 1586 | _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *dir = NULL((void*)0); |
| 1587 | const char *syspath; |
| 1588 | struct dirent *dent; |
| 1589 | int r; |
| 1590 | |
| 1591 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1591, __PRETTY_FUNCTION__); } while (0); |
| 1592 | |
| 1593 | if (device->sysattrs_read) |
| 1594 | return 0; |
| 1595 | |
| 1596 | r = sd_device_get_syspath(device, &syspath); |
| 1597 | if (r < 0) |
| 1598 | return r; |
| 1599 | |
| 1600 | dir = opendir(syspath); |
| 1601 | if (!dir) |
| 1602 | return -errno(*__errno_location ()); |
| 1603 | |
| 1604 | r = set_ensure_allocated(&device->sysattrs, &string_hash_ops)internal_set_ensure_allocated(&device->sysattrs, & string_hash_ops ); |
| 1605 | if (r < 0) |
| 1606 | return r; |
| 1607 | |
| 1608 | FOREACH_DIRENT_ALL(dent, dir, return -errno)for ((*__errno_location ()) = 0, dent = readdir(dir);; (*__errno_location ()) = 0, dent = readdir(dir)) if (!dent) { if ((*__errno_location ()) > 0) { return -(*__errno_location ()); } break; } else { |
| 1609 | char *path; |
| 1610 | struct stat statbuf; |
| 1611 | |
| 1612 | /* only handle symlinks and regular files */ |
| 1613 | if (!IN_SET(dent->d_type, DT_LNK, DT_REG)({ _Bool _found = 0; static __attribute__ ((unused)) char _static_assert__macros_need_to_be_extended [20 - sizeof((int[]){DT_LNK, DT_REG})/sizeof(int)]; switch(dent ->d_type) { case DT_LNK: case DT_REG: _found = 1; break; default : break; } _found; })) |
| 1614 | continue; |
| 1615 | |
| 1616 | path = strjoina(syspath, "/", dent->d_name)({ const char *_appendees_[] = { syspath, "/", dent->d_name }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 1617 | |
| 1618 | if (lstat(path, &statbuf) != 0) |
| 1619 | continue; |
| 1620 | |
| 1621 | if (!(statbuf.st_mode & S_IRUSR0400)) |
| 1622 | continue; |
| 1623 | |
| 1624 | r = set_put_strdup(device->sysattrs, dent->d_name); |
| 1625 | if (r < 0) |
| 1626 | return r; |
| 1627 | } |
| 1628 | |
| 1629 | device->sysattrs_read = true1; |
| 1630 | |
| 1631 | return 0; |
| 1632 | } |
| 1633 | |
| 1634 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_sysattr_first(sd_device *device) { |
| 1635 | void *v; |
| 1636 | int r; |
| 1637 | |
| 1638 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1638, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1639 | |
| 1640 | if (!device->sysattrs_read) { |
| 1641 | r = device_sysattrs_read_all(device); |
| 1642 | if (r < 0) { |
| 1643 | errno(*__errno_location ()) = -r; |
| 1644 | return NULL((void*)0); |
| 1645 | } |
| 1646 | } |
| 1647 | |
| 1648 | device->sysattrs_iterator = ITERATOR_FIRST((Iterator) { .idx = ((2147483647 *2U +1U) - 1), .next_key = ( (void*)0) }); |
| 1649 | |
| 1650 | (void) set_iterate(device->sysattrs, &device->sysattrs_iterator, &v); |
| 1651 | return v; |
| 1652 | } |
| 1653 | |
| 1654 | _public___attribute__ ((visibility("default"))) const char *sd_device_get_sysattr_next(sd_device *device) { |
| 1655 | void *v; |
| 1656 | |
| 1657 | assert_return(device, NULL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1657, __PRETTY_FUNCTION__), 0))) return (((void*)0)); } while (0); |
| 1658 | |
| 1659 | if (!device->sysattrs_read) |
| 1660 | return NULL((void*)0); |
| 1661 | |
| 1662 | (void) set_iterate(device->sysattrs, &device->sysattrs_iterator, &v); |
| 1663 | return v; |
| 1664 | } |
| 1665 | |
| 1666 | _public___attribute__ ((visibility("default"))) int sd_device_has_tag(sd_device *device, const char *tag) { |
| 1667 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1667, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1668 | assert_return(tag, -EINVAL)do { if (!(((__builtin_expect(!!(tag),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("tag"), "../src/libsystemd/sd-device/sd-device.c" , 1668, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1669 | |
| 1670 | (void) device_read_db(device); |
| 1671 | |
| 1672 | return !!set_contains(device->tags, tag); |
| 1673 | } |
| 1674 | |
| 1675 | _public___attribute__ ((visibility("default"))) int sd_device_get_property_value(sd_device *device, const char *key, const char **_value) { |
| 1676 | char *value; |
| 1677 | int r; |
| 1678 | |
| 1679 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1679, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1680 | assert_return(key, -EINVAL)do { if (!(((__builtin_expect(!!(key),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("key"), "../src/libsystemd/sd-device/sd-device.c" , 1680, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1681 | assert_return(_value, -EINVAL)do { if (!(((__builtin_expect(!!(_value),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("_value"), "../src/libsystemd/sd-device/sd-device.c" , 1681, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1682 | |
| 1683 | r = device_properties_prepare(device); |
| 1684 | if (r < 0) |
| 1685 | return r; |
| 1686 | |
| 1687 | value = ordered_hashmap_get(device->properties, key); |
| 1688 | if (!value) |
| 1689 | return -ENOENT2; |
| 1690 | |
| 1691 | *_value = value; |
| 1692 | |
| 1693 | return 0; |
| 1694 | } |
| 1695 | |
| 1696 | /* replaces the value if it already exists */ |
| 1697 | static int device_add_sysattr_value(sd_device *device, const char *_key, char *value) { |
| 1698 | _cleanup_free___attribute__((cleanup(freep))) char *key = NULL((void*)0); |
| 1699 | _cleanup_free___attribute__((cleanup(freep))) char *value_old = NULL((void*)0); |
| 1700 | int r; |
| 1701 | |
| 1702 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1702, __PRETTY_FUNCTION__); } while (0); |
| 1703 | assert(_key)do { if ((__builtin_expect(!!(!(_key)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_key"), "../src/libsystemd/sd-device/sd-device.c" , 1703, __PRETTY_FUNCTION__); } while (0); |
| 1704 | |
| 1705 | r = hashmap_ensure_allocated(&device->sysattr_values, &string_hash_ops)internal_hashmap_ensure_allocated(&device->sysattr_values , &string_hash_ops ); |
| 1706 | if (r < 0) |
| 1707 | return r; |
| 1708 | |
| 1709 | value_old = hashmap_remove2(device->sysattr_values, _key, (void **)&key); |
| 1710 | if (!key) { |
| 1711 | key = strdup(_key); |
| 1712 | if (!key) |
| 1713 | return -ENOMEM12; |
| 1714 | } |
| 1715 | |
| 1716 | r = hashmap_put(device->sysattr_values, key, value); |
| 1717 | if (r < 0) |
| 1718 | return r; |
| 1719 | |
| 1720 | key = NULL((void*)0); |
| 1721 | |
| 1722 | return 0; |
| 1723 | } |
| 1724 | |
| 1725 | static int device_get_sysattr_value(sd_device *device, const char *_key, const char **_value) { |
| 1726 | const char *key = NULL((void*)0), *value; |
| 1727 | |
| 1728 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1728, __PRETTY_FUNCTION__); } while (0); |
| 1729 | assert(_key)do { if ((__builtin_expect(!!(!(_key)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_key"), "../src/libsystemd/sd-device/sd-device.c" , 1729, __PRETTY_FUNCTION__); } while (0); |
| 1730 | |
| 1731 | value = hashmap_get2(device->sysattr_values, _key, (void **) &key); |
| 1732 | if (!key) |
| 1733 | return -ENOENT2; |
| 1734 | |
| 1735 | if (_value) |
| 1736 | *_value = value; |
| 1737 | |
| 1738 | return 0; |
| 1739 | } |
| 1740 | |
| 1741 | /* We cache all sysattr lookups. If an attribute does not exist, it is stored |
| 1742 | * with a NULL value in the cache, otherwise the returned string is stored */ |
| 1743 | _public___attribute__ ((visibility("default"))) int sd_device_get_sysattr_value(sd_device *device, const char *sysattr, const char **_value) { |
| 1744 | _cleanup_free___attribute__((cleanup(freep))) char *value = NULL((void*)0); |
| 1745 | const char *syspath, *cached_value = NULL((void*)0); |
| 1746 | char *path; |
| 1747 | struct stat statbuf; |
| 1748 | int r; |
| 1749 | |
| 1750 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1750, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1751 | assert_return(sysattr, -EINVAL)do { if (!(((__builtin_expect(!!(sysattr),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("sysattr"), "../src/libsystemd/sd-device/sd-device.c" , 1751, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1752 | |
| 1753 | /* look for possibly already cached result */ |
| 1754 | r = device_get_sysattr_value(device, sysattr, &cached_value); |
| 1755 | if (r != -ENOENT2) { |
| 1756 | if (r < 0) |
| 1757 | return r; |
| 1758 | |
| 1759 | if (!cached_value) |
| 1760 | /* we looked up the sysattr before and it did not exist */ |
| 1761 | return -ENOENT2; |
| 1762 | |
| 1763 | if (_value) |
| 1764 | *_value = cached_value; |
| 1765 | |
| 1766 | return 0; |
| 1767 | } |
| 1768 | |
| 1769 | r = sd_device_get_syspath(device, &syspath); |
| 1770 | if (r < 0) |
| 1771 | return r; |
| 1772 | |
| 1773 | path = strjoina(syspath, "/", sysattr)({ const char *_appendees_[] = { syspath, "/", sysattr }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 1774 | r = lstat(path, &statbuf); |
| 1775 | if (r < 0) { |
| 1776 | /* remember that we could not access the sysattr */ |
| 1777 | r = device_add_sysattr_value(device, sysattr, NULL((void*)0)); |
| 1778 | if (r < 0) |
| 1779 | return r; |
| 1780 | |
| 1781 | return -ENOENT2; |
| 1782 | } else if (S_ISLNK(statbuf.st_mode)((((statbuf.st_mode)) & 0170000) == (0120000))) { |
| 1783 | /* Some core links return only the last element of the target path, |
| 1784 | * these are just values, the paths should not be exposed. */ |
| 1785 | if (STR_IN_SET(sysattr, "driver", "subsystem", "module")(!!strv_find((((char**) ((const char*[]) { "driver", "subsystem" , "module", ((void*)0) }))), (sysattr)))) { |
| 1786 | r = readlink_value(path, &value); |
| 1787 | if (r < 0) |
| 1788 | return r; |
| 1789 | } else |
| 1790 | return -EINVAL22; |
| 1791 | } else if (S_ISDIR(statbuf.st_mode)((((statbuf.st_mode)) & 0170000) == (0040000))) { |
| 1792 | /* skip directories */ |
| 1793 | return -EINVAL22; |
| 1794 | } else if (!(statbuf.st_mode & S_IRUSR0400)) { |
| 1795 | /* skip non-readable files */ |
| 1796 | return -EPERM1; |
| 1797 | } else { |
| 1798 | size_t size; |
| 1799 | |
| 1800 | /* read attribute value */ |
| 1801 | r = read_full_file(path, &value, &size); |
| 1802 | if (r < 0) |
| 1803 | return r; |
| 1804 | |
| 1805 | /* drop trailing newlines */ |
| 1806 | while (size > 0 && value[--size] == '\n') |
| 1807 | value[size] = '\0'; |
| 1808 | } |
| 1809 | |
| 1810 | r = device_add_sysattr_value(device, sysattr, value); |
| 1811 | if (r < 0) |
| 1812 | return r; |
| 1813 | |
| 1814 | *_value = TAKE_PTR(value)({ typeof(value) _ptr_ = (value); (value) = ((void*)0); _ptr_ ; }); |
| 1815 | |
| 1816 | return 0; |
| 1817 | } |
| 1818 | |
| 1819 | static void device_remove_sysattr_value(sd_device *device, const char *_key) { |
| 1820 | _cleanup_free___attribute__((cleanup(freep))) char *key = NULL((void*)0); |
| 1821 | _cleanup_free___attribute__((cleanup(freep))) char *value = NULL((void*)0); |
| 1822 | |
| 1823 | assert(device)do { if ((__builtin_expect(!!(!(device)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1823, __PRETTY_FUNCTION__); } while (0); |
| 1824 | assert(_key)do { if ((__builtin_expect(!!(!(_key)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("_key"), "../src/libsystemd/sd-device/sd-device.c" , 1824, __PRETTY_FUNCTION__); } while (0); |
| 1825 | |
| 1826 | value = hashmap_remove2(device->sysattr_values, _key, (void **) &key); |
Value stored to 'value' is never read | |
| 1827 | |
| 1828 | return; |
| 1829 | } |
| 1830 | |
| 1831 | /* set the attribute and save it in the cache. If a NULL value is passed the |
| 1832 | * attribute is cleared from the cache */ |
| 1833 | _public___attribute__ ((visibility("default"))) int sd_device_set_sysattr_value(sd_device *device, const char *sysattr, char *_value) { |
| 1834 | _cleanup_close___attribute__((cleanup(closep))) int fd = -1; |
| 1835 | _cleanup_free___attribute__((cleanup(freep))) char *value = NULL((void*)0); |
| 1836 | const char *syspath; |
| 1837 | char *path; |
| 1838 | size_t len = 0; |
| 1839 | ssize_t size; |
| 1840 | int r; |
| 1841 | |
| 1842 | assert_return(device, -EINVAL)do { if (!(((__builtin_expect(!!(device),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("device"), "../src/libsystemd/sd-device/sd-device.c" , 1842, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1843 | assert_return(sysattr, -EINVAL)do { if (!(((__builtin_expect(!!(sysattr),1))) ? (1) : (log_assert_failed_return_realm (LOG_REALM_SYSTEMD, ("sysattr"), "../src/libsystemd/sd-device/sd-device.c" , 1843, __PRETTY_FUNCTION__), 0))) return (-22); } while (0); |
| 1844 | |
| 1845 | if (!_value) { |
| 1846 | device_remove_sysattr_value(device, sysattr); |
| 1847 | |
| 1848 | return 0; |
| 1849 | } |
| 1850 | |
| 1851 | r = sd_device_get_syspath(device, &syspath); |
| 1852 | if (r < 0) |
| 1853 | return r; |
| 1854 | |
| 1855 | path = strjoina(syspath, "/", sysattr)({ const char *_appendees_[] = { syspath, "/", sysattr }; char *_d_, *_p_; size_t _len_ = 0; size_t _i_; for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(_appendees_), typeof(&*(_appendees_))), sizeof(_appendees_ )/sizeof((_appendees_)[0]), ((void)0))) && _appendees_ [_i_]; _i_++) _len_ += strlen(_appendees_[_i_]); _p_ = _d_ = __builtin_alloca (_len_ + 1); for (_i_ = 0; _i_ < __extension__ (__builtin_choose_expr ( !__builtin_types_compatible_p(typeof(_appendees_), typeof(& *(_appendees_))), sizeof(_appendees_)/sizeof((_appendees_)[0] ), ((void)0))) && _appendees_[_i_]; _i_++) _p_ = stpcpy (_p_, _appendees_[_i_]); *_p_ = 0; _d_; }); |
| 1856 | |
| 1857 | fd = open(path, O_WRONLY01 | O_CLOEXEC02000000 | O_NOFOLLOW0400000); |
| 1858 | if (fd < 0) { |
| 1859 | if (errno(*__errno_location ()) == ELOOP40) |
| 1860 | return -EINVAL22; |
| 1861 | if (errno(*__errno_location ()) == EISDIR21) |
| 1862 | return -EISDIR21; |
| 1863 | |
| 1864 | value = strdup(""); |
| 1865 | if (!value) |
| 1866 | return -ENOMEM12; |
| 1867 | |
| 1868 | r = device_add_sysattr_value(device, sysattr, value); |
| 1869 | if (r < 0) |
| 1870 | return r; |
| 1871 | value = NULL((void*)0); |
| 1872 | |
| 1873 | return -ENXIO6; |
| 1874 | } |
| 1875 | |
| 1876 | len = strlen(_value); |
| 1877 | |
| 1878 | /* drop trailing newlines */ |
| 1879 | while (len > 0 && _value[len - 1] == '\n') |
| 1880 | len --; |
| 1881 | |
| 1882 | /* value length is limited to 4k */ |
| 1883 | if (len > 4096) |
| 1884 | return -EINVAL22; |
| 1885 | |
| 1886 | value = strndup(_value, len); |
| 1887 | if (!value) |
| 1888 | return -ENOMEM12; |
| 1889 | |
| 1890 | size = write(fd, value, len); |
| 1891 | if (size < 0) |
| 1892 | return -errno(*__errno_location ()); |
| 1893 | |
| 1894 | if ((size_t)size != len) |
| 1895 | return -EIO5; |
| 1896 | |
| 1897 | r = device_add_sysattr_value(device, sysattr, value); |
| 1898 | if (r < 0) |
| 1899 | return r; |
| 1900 | value = NULL((void*)0); |
| 1901 | |
| 1902 | return 0; |
| 1903 | } |