| File: | build-scan/../src/coredump/coredump.c |
| Warning: | line 614, column 32 The left operand of '!=' is a garbage value |
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| 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |||
| 2 | ||||
| 3 | #include <errno(*__errno_location ()).h> | |||
| 4 | #include <stdio.h> | |||
| 5 | #include <stdio_ext.h> | |||
| 6 | #include <sys/prctl.h> | |||
| 7 | #include <sys/xattr.h> | |||
| 8 | #include <unistd.h> | |||
| 9 | ||||
| 10 | #if HAVE_ELFUTILS1 | |||
| 11 | #include <dwarf.h> | |||
| 12 | #include <elfutils/libdwfl.h> | |||
| 13 | #endif | |||
| 14 | ||||
| 15 | #include "sd-daemon.h" | |||
| 16 | #include "sd-journal.h" | |||
| 17 | #include "sd-login.h" | |||
| 18 | #include "sd-messages.h" | |||
| 19 | ||||
| 20 | #include "acl-util.h" | |||
| 21 | #include "alloc-util.h" | |||
| 22 | #include "capability-util.h" | |||
| 23 | #include "cgroup-util.h" | |||
| 24 | #include "compress.h" | |||
| 25 | #include "conf-parser.h" | |||
| 26 | #include "copy.h" | |||
| 27 | #include "coredump-vacuum.h" | |||
| 28 | #include "dirent-util.h" | |||
| 29 | #include "escape.h" | |||
| 30 | #include "fd-util.h" | |||
| 31 | #include "fileio.h" | |||
| 32 | #include "fs-util.h" | |||
| 33 | #include "io-util.h" | |||
| 34 | #include "journal-importer.h" | |||
| 35 | #include "log.h" | |||
| 36 | #include "macro.h" | |||
| 37 | #include "missing.h" | |||
| 38 | #include "mkdir.h" | |||
| 39 | #include "parse-util.h" | |||
| 40 | #include "process-util.h" | |||
| 41 | #include "signal-util.h" | |||
| 42 | #include "socket-util.h" | |||
| 43 | #include "special.h" | |||
| 44 | #include "stacktrace.h" | |||
| 45 | #include "string-table.h" | |||
| 46 | #include "string-util.h" | |||
| 47 | #include "strv.h" | |||
| 48 | #include "user-util.h" | |||
| 49 | #include "util.h" | |||
| 50 | ||||
| 51 | /* The maximum size up to which we process coredumps */ | |||
| 52 | #define PROCESS_SIZE_MAX((uint64_t) (2LLU*1024LLU*1024LLU*1024LLU)) ((uint64_t) (2LLU*1024LLU*1024LLU*1024LLU)) | |||
| 53 | ||||
| 54 | /* The maximum size up to which we leave the coredump around on disk */ | |||
| 55 | #define EXTERNAL_SIZE_MAX((uint64_t) (2LLU*1024LLU*1024LLU*1024LLU)) PROCESS_SIZE_MAX((uint64_t) (2LLU*1024LLU*1024LLU*1024LLU)) | |||
| 56 | ||||
| 57 | /* The maximum size up to which we store the coredump in the journal */ | |||
| 58 | #define JOURNAL_SIZE_MAX((size_t) (767LU*1024LU*1024LU)) ((size_t) (767LU*1024LU*1024LU)) | |||
| 59 | ||||
| 60 | /* Make sure to not make this larger than the maximum journal entry | |||
| 61 | * size. See DATA_SIZE_MAX in journald-native.c. */ | |||
| 62 | assert_cc(JOURNAL_SIZE_MAX <= DATA_SIZE_MAX)GCC diagnostic push
; GCC diagnostic ignored "-Wdeclaration-after-statement" ; struct _assert_struct_25 { char x[(((size_t) (767LU*1024LU *1024LU)) <= (1024*1024*768u)) ? 0 : -1]; }; GCC diagnostic pop ; | |||
| 63 | ||||
| 64 | enum { | |||
| 65 | /* We use this as array indexes for a couple of special fields we use for | |||
| 66 | * naming coredump files, and attaching xattrs, and for indexing argv[]. | |||
| 67 | ||||
| 68 | * Our pattern for man:systectl(1) kernel.core_pattern is such that the | |||
| 69 | * kernel passes fields until CONTEXT_RLIMIT as arguments in argv[]. After | |||
| 70 | * that it gets complicated: the kernel passes "comm" as one or more fields | |||
| 71 | * starting at index CONTEXT_COMM (in other words, full "comm" is under index | |||
| 72 | * CONTEXT_COMM when it does not contain spaces, which is the common | |||
| 73 | * case). This mapping is not reversible, so we prefer to retrieve "comm" | |||
| 74 | * from /proc. We only fall back to argv[CONTEXT_COMM...] when that fails. | |||
| 75 | * | |||
| 76 | * In the internal context[] array, fields before CONTEXT_COMM are the | |||
| 77 | * strings from argv[], so they should not be freed. The strings at indices | |||
| 78 | * CONTEXT_COMM and higher are allocated by us and should be freed at the | |||
| 79 | * end. | |||
| 80 | */ | |||
| 81 | CONTEXT_PID, | |||
| 82 | CONTEXT_UID, | |||
| 83 | CONTEXT_GID, | |||
| 84 | CONTEXT_SIGNAL, | |||
| 85 | CONTEXT_TIMESTAMP, | |||
| 86 | CONTEXT_RLIMIT, | |||
| 87 | CONTEXT_HOSTNAME, | |||
| 88 | CONTEXT_COMM, | |||
| 89 | CONTEXT_EXE, | |||
| 90 | CONTEXT_UNIT, | |||
| 91 | _CONTEXT_MAX | |||
| 92 | }; | |||
| 93 | ||||
| 94 | typedef enum CoredumpStorage { | |||
| 95 | COREDUMP_STORAGE_NONE, | |||
| 96 | COREDUMP_STORAGE_EXTERNAL, | |||
| 97 | COREDUMP_STORAGE_JOURNAL, | |||
| 98 | _COREDUMP_STORAGE_MAX, | |||
| 99 | _COREDUMP_STORAGE_INVALID = -1 | |||
| 100 | } CoredumpStorage; | |||
| 101 | ||||
| 102 | static const char* const coredump_storage_table[_COREDUMP_STORAGE_MAX] = { | |||
| 103 | [COREDUMP_STORAGE_NONE] = "none", | |||
| 104 | [COREDUMP_STORAGE_EXTERNAL] = "external", | |||
| 105 | [COREDUMP_STORAGE_JOURNAL] = "journal", | |||
| 106 | }; | |||
| 107 | ||||
| 108 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP(coredump_storage, CoredumpStorage)static const char *coredump_storage_to_string(CoredumpStorage i) { if (i < 0 || i >= (CoredumpStorage) __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p(typeof (coredump_storage_table), typeof(&*(coredump_storage_table ))), sizeof(coredump_storage_table)/sizeof((coredump_storage_table )[0]), ((void)0)))) return ((void*)0); return coredump_storage_table [i]; } static CoredumpStorage coredump_storage_from_string(const char *s) { return (CoredumpStorage) string_table_lookup(coredump_storage_table , __extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(coredump_storage_table), typeof(&*(coredump_storage_table ))), sizeof(coredump_storage_table)/sizeof((coredump_storage_table )[0]), ((void)0))), s); }; | |||
| 109 | static DEFINE_CONFIG_PARSE_ENUM(config_parse_coredump_storage, coredump_storage, CoredumpStorage, "Failed to parse storage setting")int config_parse_coredump_storage(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line , const char *lvalue, int ltype, const char *rvalue, void *data , void *userdata) { CoredumpStorage *i = data, x; do { if ((__builtin_expect (!!(!(filename)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD , ("filename"), "../src/coredump/coredump.c", 109, __PRETTY_FUNCTION__ ); } while (0); do { if ((__builtin_expect(!!(!(lvalue)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("lvalue"), "../src/coredump/coredump.c" , 109, __PRETTY_FUNCTION__); } while (0); do { if ((__builtin_expect (!!(!(rvalue)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD , ("rvalue"), "../src/coredump/coredump.c", 109, __PRETTY_FUNCTION__ ); } while (0); do { if ((__builtin_expect(!!(!(data)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("data"), "../src/coredump/coredump.c", 109 , __PRETTY_FUNCTION__); } while (0); x = coredump_storage_from_string (rvalue); if (x < 0) { ({ int _level = (3), _e = (0); (log_get_max_level_realm (LOG_REALM_SYSTEMD) >= ((_level) & 0x07)) ? log_syntax_internal (unit, _level, filename, line, _e, "../src/coredump/coredump.c" , 109, __func__, "Failed to parse storage setting" ", ignoring: %s" , rvalue) : -abs(_e); }); return 0; } *i = x; return 0; }; | |||
| 110 | ||||
| 111 | static CoredumpStorage arg_storage = COREDUMP_STORAGE_EXTERNAL; | |||
| 112 | static bool_Bool arg_compress = true1; | |||
| 113 | static uint64_t arg_process_size_max = PROCESS_SIZE_MAX((uint64_t) (2LLU*1024LLU*1024LLU*1024LLU)); | |||
| 114 | static uint64_t arg_external_size_max = EXTERNAL_SIZE_MAX((uint64_t) (2LLU*1024LLU*1024LLU*1024LLU)); | |||
| 115 | static uint64_t arg_journal_size_max = JOURNAL_SIZE_MAX((size_t) (767LU*1024LU*1024LU)); | |||
| 116 | static uint64_t arg_keep_free = (uint64_t) -1; | |||
| 117 | static uint64_t arg_max_use = (uint64_t) -1; | |||
| 118 | ||||
| 119 | static int parse_config(void) { | |||
| 120 | static const ConfigTableItem items[] = { | |||
| 121 | { "Coredump", "Storage", config_parse_coredump_storage, 0, &arg_storage }, | |||
| 122 | { "Coredump", "Compress", config_parse_bool, 0, &arg_compress }, | |||
| 123 | { "Coredump", "ProcessSizeMax", config_parse_iec_uint64, 0, &arg_process_size_max }, | |||
| 124 | { "Coredump", "ExternalSizeMax", config_parse_iec_uint64, 0, &arg_external_size_max }, | |||
| 125 | { "Coredump", "JournalSizeMax", config_parse_iec_size, 0, &arg_journal_size_max }, | |||
| 126 | { "Coredump", "KeepFree", config_parse_iec_uint64, 0, &arg_keep_free }, | |||
| 127 | { "Coredump", "MaxUse", config_parse_iec_uint64, 0, &arg_max_use }, | |||
| 128 | {} | |||
| 129 | }; | |||
| 130 | ||||
| 131 | return config_parse_many_nulstr(PKGSYSCONFDIR"/etc/systemd" "/coredump.conf", | |||
| 132 | CONF_PATHS_NULSTR("systemd/coredump.conf.d")"/etc/" "systemd/coredump.conf.d" "\0" "/run/" "systemd/coredump.conf.d" "\0" "/usr/local/lib/" "systemd/coredump.conf.d" "\0" "/usr/lib/" "systemd/coredump.conf.d" "\0", | |||
| 133 | "Coredump\0", | |||
| 134 | config_item_table_lookup, items, | |||
| 135 | CONFIG_PARSE_WARN, NULL((void*)0)); | |||
| 136 | } | |||
| 137 | ||||
| 138 | static inline uint64_t storage_size_max(void) { | |||
| 139 | if (arg_storage == COREDUMP_STORAGE_EXTERNAL) | |||
| 140 | return arg_external_size_max; | |||
| 141 | if (arg_storage == COREDUMP_STORAGE_JOURNAL) | |||
| 142 | return arg_journal_size_max; | |||
| 143 | assert(arg_storage == COREDUMP_STORAGE_NONE)do { if ((__builtin_expect(!!(!(arg_storage == COREDUMP_STORAGE_NONE )),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("arg_storage == COREDUMP_STORAGE_NONE" ), "../src/coredump/coredump.c", 143, __PRETTY_FUNCTION__); } while (0); | |||
| 144 | return 0; | |||
| 145 | } | |||
| 146 | ||||
| 147 | static int fix_acl(int fd, uid_t uid) { | |||
| 148 | ||||
| 149 | #if HAVE_ACL1 | |||
| 150 | _cleanup_(acl_freep)__attribute__((cleanup(acl_freep))) acl_t acl = NULL((void*)0); | |||
| 151 | acl_entry_t entry; | |||
| 152 | acl_permset_t permset; | |||
| 153 | int r; | |||
| 154 | ||||
| 155 | assert(fd >= 0)do { if ((__builtin_expect(!!(!(fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/coredump/coredump.c" , 155, __PRETTY_FUNCTION__); } while (0); | |||
| 156 | ||||
| 157 | if (uid_is_system(uid) || uid_is_dynamic(uid) || uid == UID_NOBODY((uid_t) 65534U)) | |||
| 158 | return 0; | |||
| 159 | ||||
| 160 | /* Make sure normal users can read (but not write or delete) | |||
| 161 | * their own coredumps */ | |||
| 162 | ||||
| 163 | acl = acl_get_fd(fd); | |||
| 164 | if (!acl) | |||
| 165 | return log_error_errno(errno, "Failed to get ACL: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 165, __func__ , "Failed to get ACL: %m") : -abs(_e); }); | |||
| 166 | ||||
| 167 | if (acl_create_entry(&acl, &entry) < 0 || | |||
| 168 | acl_set_tag_type(entry, ACL_USER(0x02)) < 0 || | |||
| 169 | acl_set_qualifier(entry, &uid) < 0) | |||
| 170 | return log_error_errno(errno, "Failed to patch ACL: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 170, __func__ , "Failed to patch ACL: %m") : -abs(_e); }); | |||
| 171 | ||||
| 172 | if (acl_get_permset(entry, &permset) < 0 || | |||
| 173 | acl_add_perm(permset, ACL_READ(0x04)) < 0) | |||
| 174 | return log_warning_errno(errno, "Failed to patch ACL: %m")({ int _level = ((4)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 174, __func__ , "Failed to patch ACL: %m") : -abs(_e); }); | |||
| 175 | ||||
| 176 | r = calc_acl_mask_if_needed(&acl); | |||
| 177 | if (r < 0) | |||
| 178 | return log_warning_errno(r, "Failed to patch ACL: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 178, __func__, "Failed to patch ACL: %m" ) : -abs(_e); }); | |||
| 179 | ||||
| 180 | if (acl_set_fd(fd, acl) < 0) | |||
| 181 | return log_error_errno(errno, "Failed to apply ACL: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 181, __func__ , "Failed to apply ACL: %m") : -abs(_e); }); | |||
| 182 | #endif | |||
| 183 | ||||
| 184 | return 0; | |||
| 185 | } | |||
| 186 | ||||
| 187 | static int fix_xattr(int fd, const char *context[_CONTEXT_MAX]) { | |||
| 188 | ||||
| 189 | static const char * const xattrs[_CONTEXT_MAX] = { | |||
| 190 | [CONTEXT_PID] = "user.coredump.pid", | |||
| 191 | [CONTEXT_UID] = "user.coredump.uid", | |||
| 192 | [CONTEXT_GID] = "user.coredump.gid", | |||
| 193 | [CONTEXT_SIGNAL] = "user.coredump.signal", | |||
| 194 | [CONTEXT_TIMESTAMP] = "user.coredump.timestamp", | |||
| 195 | [CONTEXT_RLIMIT] = "user.coredump.rlimit", | |||
| 196 | [CONTEXT_HOSTNAME] = "user.coredump.hostname", | |||
| 197 | [CONTEXT_COMM] = "user.coredump.comm", | |||
| 198 | [CONTEXT_EXE] = "user.coredump.exe", | |||
| 199 | }; | |||
| 200 | ||||
| 201 | int r = 0; | |||
| 202 | unsigned i; | |||
| 203 | ||||
| 204 | assert(fd >= 0)do { if ((__builtin_expect(!!(!(fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/coredump/coredump.c" , 204, __PRETTY_FUNCTION__); } while (0); | |||
| 205 | ||||
| 206 | /* Attach some metadata to coredumps via extended | |||
| 207 | * attributes. Just because we can. */ | |||
| 208 | ||||
| 209 | for (i = 0; i < _CONTEXT_MAX; i++) { | |||
| 210 | int k; | |||
| 211 | ||||
| 212 | if (isempty(context[i]) || !xattrs[i]) | |||
| 213 | continue; | |||
| 214 | ||||
| 215 | k = fsetxattr(fd, xattrs[i], context[i], strlen(context[i]), XATTR_CREATEXATTR_CREATE); | |||
| 216 | if (k < 0 && r == 0) | |||
| 217 | r = -errno(*__errno_location ()); | |||
| 218 | } | |||
| 219 | ||||
| 220 | return r; | |||
| 221 | } | |||
| 222 | ||||
| 223 | #define filename_escape(s)xescape((s), "./ ") xescape((s), "./ ") | |||
| 224 | ||||
| 225 | static inline const char *coredump_tmpfile_name(const char *s) { | |||
| 226 | return s ? s : "(unnamed temporary file)"; | |||
| 227 | } | |||
| 228 | ||||
| 229 | static int fix_permissions( | |||
| 230 | int fd, | |||
| 231 | const char *filename, | |||
| 232 | const char *target, | |||
| 233 | const char *context[_CONTEXT_MAX], | |||
| 234 | uid_t uid) { | |||
| 235 | ||||
| 236 | int r; | |||
| 237 | ||||
| 238 | assert(fd >= 0)do { if ((__builtin_expect(!!(!(fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/coredump/coredump.c" , 238, __PRETTY_FUNCTION__); } while (0); | |||
| 239 | assert(target)do { if ((__builtin_expect(!!(!(target)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("target"), "../src/coredump/coredump.c", 239, __PRETTY_FUNCTION__); } while (0); | |||
| 240 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 240, __PRETTY_FUNCTION__); } while (0); | |||
| 241 | ||||
| 242 | /* Ignore errors on these */ | |||
| 243 | (void) fchmod(fd, 0640); | |||
| 244 | (void) fix_acl(fd, uid); | |||
| 245 | (void) fix_xattr(fd, context); | |||
| 246 | ||||
| 247 | if (fsync(fd) < 0) | |||
| 248 | return log_error_errno(errno, "Failed to sync coredump %s: %m", coredump_tmpfile_name(filename))({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 248, __func__ , "Failed to sync coredump %s: %m", coredump_tmpfile_name(filename )) : -abs(_e); }); | |||
| 249 | ||||
| 250 | (void) fsync_directory_of_file(fd); | |||
| 251 | ||||
| 252 | r = link_tmpfile(fd, filename, target); | |||
| 253 | if (r < 0) | |||
| 254 | return log_error_errno(r, "Failed to move coredump %s into place: %m", target)({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 254, __func__, "Failed to move coredump %s into place: %m" , target) : -abs(_e); }); | |||
| 255 | ||||
| 256 | return 0; | |||
| 257 | } | |||
| 258 | ||||
| 259 | static int maybe_remove_external_coredump(const char *filename, uint64_t size) { | |||
| 260 | ||||
| 261 | /* Returns 1 if might remove, 0 if will not remove, < 0 on error. */ | |||
| 262 | ||||
| 263 | if (arg_storage == COREDUMP_STORAGE_EXTERNAL && | |||
| 264 | size <= arg_external_size_max) | |||
| 265 | return 0; | |||
| 266 | ||||
| 267 | if (!filename) | |||
| 268 | return 1; | |||
| 269 | ||||
| 270 | if (unlink(filename) < 0 && errno(*__errno_location ()) != ENOENT2) | |||
| 271 | return log_error_errno(errno, "Failed to unlink %s: %m", filename)({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 271, __func__ , "Failed to unlink %s: %m", filename) : -abs(_e); }); | |||
| 272 | ||||
| 273 | return 1; | |||
| 274 | } | |||
| 275 | ||||
| 276 | static int make_filename(const char *context[_CONTEXT_MAX], char **ret) { | |||
| 277 | _cleanup_free___attribute__((cleanup(freep))) char *c = NULL((void*)0), *u = NULL((void*)0), *p = NULL((void*)0), *t = NULL((void*)0); | |||
| 278 | sd_id128_t boot = {}; | |||
| 279 | int r; | |||
| 280 | ||||
| 281 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 281, __PRETTY_FUNCTION__); } while (0); | |||
| 282 | ||||
| 283 | c = filename_escape(context[CONTEXT_COMM])xescape((context[CONTEXT_COMM]), "./ "); | |||
| 284 | if (!c) | |||
| 285 | return -ENOMEM12; | |||
| 286 | ||||
| 287 | u = filename_escape(context[CONTEXT_UID])xescape((context[CONTEXT_UID]), "./ "); | |||
| 288 | if (!u) | |||
| 289 | return -ENOMEM12; | |||
| 290 | ||||
| 291 | r = sd_id128_get_boot(&boot); | |||
| 292 | if (r < 0) | |||
| 293 | return r; | |||
| 294 | ||||
| 295 | p = filename_escape(context[CONTEXT_PID])xescape((context[CONTEXT_PID]), "./ "); | |||
| 296 | if (!p) | |||
| 297 | return -ENOMEM12; | |||
| 298 | ||||
| 299 | t = filename_escape(context[CONTEXT_TIMESTAMP])xescape((context[CONTEXT_TIMESTAMP]), "./ "); | |||
| 300 | if (!t) | |||
| 301 | return -ENOMEM12; | |||
| 302 | ||||
| 303 | if (asprintf(ret, | |||
| 304 | "/var/lib/systemd/coredump/core.%s.%s." SD_ID128_FORMAT_STR"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x" ".%s.%s000000", | |||
| 305 | c, | |||
| 306 | u, | |||
| 307 | SD_ID128_FORMAT_VAL(boot)(boot).bytes[0], (boot).bytes[1], (boot).bytes[2], (boot).bytes [3], (boot).bytes[4], (boot).bytes[5], (boot).bytes[6], (boot ).bytes[7], (boot).bytes[8], (boot).bytes[9], (boot).bytes[10 ], (boot).bytes[11], (boot).bytes[12], (boot).bytes[13], (boot ).bytes[14], (boot).bytes[15], | |||
| 308 | p, | |||
| 309 | t) < 0) | |||
| 310 | return -ENOMEM12; | |||
| 311 | ||||
| 312 | return 0; | |||
| 313 | } | |||
| 314 | ||||
| 315 | static int save_external_coredump( | |||
| 316 | const char *context[_CONTEXT_MAX], | |||
| 317 | int input_fd, | |||
| 318 | char **ret_filename, | |||
| 319 | int *ret_node_fd, | |||
| 320 | int *ret_data_fd, | |||
| 321 | uint64_t *ret_size, | |||
| 322 | bool_Bool *ret_truncated) { | |||
| 323 | ||||
| 324 | _cleanup_free___attribute__((cleanup(freep))) char *fn = NULL((void*)0), *tmp = NULL((void*)0); | |||
| 325 | _cleanup_close___attribute__((cleanup(closep))) int fd = -1; | |||
| 326 | uint64_t rlimit, process_limit, max_size; | |||
| 327 | struct stat st; | |||
| 328 | uid_t uid; | |||
| 329 | int r; | |||
| 330 | ||||
| 331 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 331, __PRETTY_FUNCTION__); } while (0); | |||
| 332 | assert(ret_filename)do { if ((__builtin_expect(!!(!(ret_filename)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret_filename"), "../src/coredump/coredump.c" , 332, __PRETTY_FUNCTION__); } while (0); | |||
| 333 | assert(ret_node_fd)do { if ((__builtin_expect(!!(!(ret_node_fd)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret_node_fd"), "../src/coredump/coredump.c" , 333, __PRETTY_FUNCTION__); } while (0); | |||
| 334 | assert(ret_data_fd)do { if ((__builtin_expect(!!(!(ret_data_fd)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret_data_fd"), "../src/coredump/coredump.c" , 334, __PRETTY_FUNCTION__); } while (0); | |||
| 335 | assert(ret_size)do { if ((__builtin_expect(!!(!(ret_size)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret_size"), "../src/coredump/coredump.c" , 335, __PRETTY_FUNCTION__); } while (0); | |||
| 336 | ||||
| 337 | r = parse_uid(context[CONTEXT_UID], &uid); | |||
| 338 | if (r < 0) | |||
| 339 | return log_error_errno(r, "Failed to parse UID: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 339, __func__, "Failed to parse UID: %m" ) : -abs(_e); }); | |||
| 340 | ||||
| 341 | r = safe_atou64(context[CONTEXT_RLIMIT], &rlimit); | |||
| 342 | if (r < 0) | |||
| 343 | return log_error_errno(r, "Failed to parse resource limit: %s", context[CONTEXT_RLIMIT])({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 343, __func__, "Failed to parse resource limit: %s" , context[CONTEXT_RLIMIT]) : -abs(_e); }); | |||
| 344 | if (rlimit < page_size()) { | |||
| 345 | /* Is coredumping disabled? Then don't bother saving/processing the coredump. | |||
| 346 | * Anything below PAGE_SIZE cannot give a readable coredump (the kernel uses | |||
| 347 | * ELF_EXEC_PAGESIZE which is not easily accessible, but is usually the same as PAGE_SIZE. */ | |||
| 348 | log_info("Resource limits disable core dumping for process %s (%s).",({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 349, __func__, "Resource limits disable core dumping for process %s (%s)." , context[CONTEXT_PID], context[CONTEXT_COMM]) : -abs(_e); }) | |||
| 349 | context[CONTEXT_PID], context[CONTEXT_COMM])({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 349, __func__, "Resource limits disable core dumping for process %s (%s)." , context[CONTEXT_PID], context[CONTEXT_COMM]) : -abs(_e); }); | |||
| 350 | return -EBADSLT57; | |||
| 351 | } | |||
| 352 | ||||
| 353 | process_limit = MAX(arg_process_size_max, storage_size_max())__extension__ ({ const typeof((arg_process_size_max)) __unique_prefix_A26 = ((arg_process_size_max)); const typeof((storage_size_max() )) __unique_prefix_B27 = ((storage_size_max())); __unique_prefix_A26 > __unique_prefix_B27 ? __unique_prefix_A26 : __unique_prefix_B27 ; }); | |||
| 354 | if (process_limit == 0) { | |||
| 355 | log_debug("Limits for coredump processing and storage are both 0, not dumping core.")({ 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/coredump/coredump.c", 355, __func__, "Limits for coredump processing and storage are both 0, not dumping core." ) : -abs(_e); }); | |||
| 356 | return -EBADSLT57; | |||
| 357 | } | |||
| 358 | ||||
| 359 | /* Never store more than the process configured, or than we actually shall keep or process */ | |||
| 360 | max_size = MIN(rlimit, process_limit)__extension__ ({ const typeof((rlimit)) __unique_prefix_A28 = ((rlimit)); const typeof((process_limit)) __unique_prefix_B29 = ((process_limit)); __unique_prefix_A28 < __unique_prefix_B29 ? __unique_prefix_A28 : __unique_prefix_B29; }); | |||
| 361 | ||||
| 362 | r = make_filename(context, &fn); | |||
| 363 | if (r < 0) | |||
| 364 | return log_error_errno(r, "Failed to determine coredump file name: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 364, __func__, "Failed to determine coredump file name: %m" ) : -abs(_e); }); | |||
| 365 | ||||
| 366 | mkdir_p_label("/var/lib/systemd/coredump", 0755); | |||
| 367 | ||||
| 368 | fd = open_tmpfile_linkable(fn, O_RDWR02|O_CLOEXEC02000000, &tmp); | |||
| 369 | if (fd < 0) | |||
| 370 | return log_error_errno(fd, "Failed to create temporary file for coredump %s: %m", fn)({ int _level = ((3)), _e = ((fd)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 370, __func__, "Failed to create temporary file for coredump %s: %m" , fn) : -abs(_e); }); | |||
| 371 | ||||
| 372 | r = copy_bytes(input_fd, fd, max_size, 0); | |||
| 373 | if (r < 0) { | |||
| 374 | log_error_errno(r, "Cannot store coredump of %s (%s): %m", context[CONTEXT_PID], context[CONTEXT_COMM])({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 374, __func__, "Cannot store coredump of %s (%s): %m" , context[CONTEXT_PID], context[CONTEXT_COMM]) : -abs(_e); }); | |||
| 375 | goto fail; | |||
| 376 | } | |||
| 377 | *ret_truncated = r == 1; | |||
| 378 | if (*ret_truncated) | |||
| 379 | log_struct(LOG_INFO,log_struct_internal(((LOG_REALM_SYSTEMD) << 10 | (6)), 0 , "../src/coredump/coredump.c", 382, __func__, "MESSAGE=" "Core file was truncated to %zu bytes." , max_size, "SIZE_LIMIT=%zu", max_size, "MESSAGE_ID=" "5a" "ad" "d8" "e9" "54" "dc" "4b" "1a" "8c" "95" "4d" "63" "fd" "9e" "11" "37", ((void*)0)) | |||
| 380 | LOG_MESSAGE("Core file was truncated to %zu bytes.", max_size),log_struct_internal(((LOG_REALM_SYSTEMD) << 10 | (6)), 0 , "../src/coredump/coredump.c", 382, __func__, "MESSAGE=" "Core file was truncated to %zu bytes." , max_size, "SIZE_LIMIT=%zu", max_size, "MESSAGE_ID=" "5a" "ad" "d8" "e9" "54" "dc" "4b" "1a" "8c" "95" "4d" "63" "fd" "9e" "11" "37", ((void*)0)) | |||
| 381 | "SIZE_LIMIT=%zu", max_size,log_struct_internal(((LOG_REALM_SYSTEMD) << 10 | (6)), 0 , "../src/coredump/coredump.c", 382, __func__, "MESSAGE=" "Core file was truncated to %zu bytes." , max_size, "SIZE_LIMIT=%zu", max_size, "MESSAGE_ID=" "5a" "ad" "d8" "e9" "54" "dc" "4b" "1a" "8c" "95" "4d" "63" "fd" "9e" "11" "37", ((void*)0)) | |||
| 382 | "MESSAGE_ID=" SD_MESSAGE_TRUNCATED_CORE_STR)log_struct_internal(((LOG_REALM_SYSTEMD) << 10 | (6)), 0 , "../src/coredump/coredump.c", 382, __func__, "MESSAGE=" "Core file was truncated to %zu bytes." , max_size, "SIZE_LIMIT=%zu", max_size, "MESSAGE_ID=" "5a" "ad" "d8" "e9" "54" "dc" "4b" "1a" "8c" "95" "4d" "63" "fd" "9e" "11" "37", ((void*)0)); | |||
| 383 | ||||
| 384 | if (fstat(fd, &st) < 0) { | |||
| 385 | log_error_errno(errno, "Failed to fstat core file %s: %m", coredump_tmpfile_name(tmp))({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 385, __func__ , "Failed to fstat core file %s: %m", coredump_tmpfile_name(tmp )) : -abs(_e); }); | |||
| 386 | goto fail; | |||
| 387 | } | |||
| 388 | ||||
| 389 | if (lseek(fd, 0, SEEK_SET0) == (off_t) -1) { | |||
| 390 | log_error_errno(errno, "Failed to seek on %s: %m", coredump_tmpfile_name(tmp))({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 390, __func__ , "Failed to seek on %s: %m", coredump_tmpfile_name(tmp)) : - abs(_e); }); | |||
| 391 | goto fail; | |||
| 392 | } | |||
| 393 | ||||
| 394 | #if HAVE_XZ1 || HAVE_LZ41 | |||
| 395 | /* If we will remove the coredump anyway, do not compress. */ | |||
| 396 | if (arg_compress && !maybe_remove_external_coredump(NULL((void*)0), st.st_size)) { | |||
| 397 | ||||
| 398 | _cleanup_free___attribute__((cleanup(freep))) char *fn_compressed = NULL((void*)0), *tmp_compressed = NULL((void*)0); | |||
| 399 | _cleanup_close___attribute__((cleanup(closep))) int fd_compressed = -1; | |||
| 400 | ||||
| 401 | fn_compressed = strappend(fn, COMPRESSED_EXT".lz4"); | |||
| 402 | if (!fn_compressed) { | |||
| 403 | log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 403, __func__); | |||
| 404 | goto uncompressed; | |||
| 405 | } | |||
| 406 | ||||
| 407 | fd_compressed = open_tmpfile_linkable(fn_compressed, O_RDWR02|O_CLOEXEC02000000, &tmp_compressed); | |||
| 408 | if (fd_compressed < 0) { | |||
| 409 | log_error_errno(fd_compressed, "Failed to create temporary file for coredump %s: %m", fn_compressed)({ int _level = ((3)), _e = ((fd_compressed)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 409, __func__, "Failed to create temporary file for coredump %s: %m" , fn_compressed) : -abs(_e); }); | |||
| 410 | goto uncompressed; | |||
| 411 | } | |||
| 412 | ||||
| 413 | r = compress_streamcompress_stream_lz4(fd, fd_compressed, -1); | |||
| 414 | if (r < 0) { | |||
| 415 | log_error_errno(r, "Failed to compress %s: %m", coredump_tmpfile_name(tmp_compressed))({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 415, __func__, "Failed to compress %s: %m" , coredump_tmpfile_name(tmp_compressed)) : -abs(_e); }); | |||
| 416 | goto fail_compressed; | |||
| 417 | } | |||
| 418 | ||||
| 419 | r = fix_permissions(fd_compressed, tmp_compressed, fn_compressed, context, uid); | |||
| 420 | if (r < 0) | |||
| 421 | goto fail_compressed; | |||
| 422 | ||||
| 423 | /* OK, this worked, we can get rid of the uncompressed version now */ | |||
| 424 | if (tmp) | |||
| 425 | unlink_noerrno(tmp); | |||
| 426 | ||||
| 427 | *ret_filename = TAKE_PTR(fn_compressed)({ typeof(fn_compressed) _ptr_ = (fn_compressed); (fn_compressed ) = ((void*)0); _ptr_; }); /* compressed */ | |||
| 428 | *ret_node_fd = TAKE_FD(fd_compressed)({ int _fd_ = (fd_compressed); (fd_compressed) = -1; _fd_; }); /* compressed */ | |||
| 429 | *ret_data_fd = TAKE_FD(fd)({ int _fd_ = (fd); (fd) = -1; _fd_; }); /* uncompressed */ | |||
| 430 | *ret_size = (uint64_t) st.st_size; /* uncompressed */ | |||
| 431 | ||||
| 432 | return 0; | |||
| 433 | ||||
| 434 | fail_compressed: | |||
| 435 | if (tmp_compressed) | |||
| 436 | (void) unlink(tmp_compressed); | |||
| 437 | } | |||
| 438 | ||||
| 439 | uncompressed: | |||
| 440 | #endif | |||
| 441 | ||||
| 442 | r = fix_permissions(fd, tmp, fn, context, uid); | |||
| 443 | if (r < 0) | |||
| 444 | goto fail; | |||
| 445 | ||||
| 446 | *ret_filename = TAKE_PTR(fn)({ typeof(fn) _ptr_ = (fn); (fn) = ((void*)0); _ptr_; }); | |||
| 447 | *ret_data_fd = TAKE_FD(fd)({ int _fd_ = (fd); (fd) = -1; _fd_; }); | |||
| 448 | *ret_node_fd = -1; | |||
| 449 | *ret_size = (uint64_t) st.st_size; | |||
| 450 | ||||
| 451 | return 0; | |||
| 452 | ||||
| 453 | fail: | |||
| 454 | if (tmp) | |||
| 455 | (void) unlink(tmp); | |||
| 456 | return r; | |||
| 457 | } | |||
| 458 | ||||
| 459 | static int allocate_journal_field(int fd, size_t size, char **ret, size_t *ret_size) { | |||
| 460 | _cleanup_free___attribute__((cleanup(freep))) char *field = NULL((void*)0); | |||
| 461 | ssize_t n; | |||
| 462 | ||||
| 463 | assert(fd >= 0)do { if ((__builtin_expect(!!(!(fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/coredump/coredump.c" , 463, __PRETTY_FUNCTION__); } while (0); | |||
| 464 | assert(ret)do { if ((__builtin_expect(!!(!(ret)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret"), "../src/coredump/coredump.c", 464 , __PRETTY_FUNCTION__); } while (0); | |||
| 465 | assert(ret_size)do { if ((__builtin_expect(!!(!(ret_size)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("ret_size"), "../src/coredump/coredump.c" , 465, __PRETTY_FUNCTION__); } while (0); | |||
| 466 | ||||
| 467 | if (lseek(fd, 0, SEEK_SET0) == (off_t) -1) | |||
| 468 | return log_warning_errno(errno, "Failed to seek: %m")({ int _level = ((4)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 468, __func__ , "Failed to seek: %m") : -abs(_e); }); | |||
| 469 | ||||
| 470 | field = malloc(9 + size); | |||
| 471 | if (!field) { | |||
| 472 | log_warning("Failed to allocate memory for coredump, coredump will not be stored.")({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 472, __func__, "Failed to allocate memory for coredump, coredump will not be stored." ) : -abs(_e); }); | |||
| 473 | return -ENOMEM12; | |||
| 474 | } | |||
| 475 | ||||
| 476 | memcpy(field, "COREDUMP=", 9); | |||
| 477 | ||||
| 478 | n = read(fd, field + 9, size); | |||
| 479 | if (n < 0) | |||
| 480 | return log_error_errno((int) n, "Failed to read core data: %m")({ int _level = ((3)), _e = (((int) n)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 480, __func__, "Failed to read core data: %m" ) : -abs(_e); }); | |||
| 481 | if ((size_t) n < size) { | |||
| 482 | log_error("Core data too short.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 482, __func__, "Core data too short." ) : -abs(_e); }); | |||
| 483 | return -EIO5; | |||
| 484 | } | |||
| 485 | ||||
| 486 | *ret = TAKE_PTR(field)({ typeof(field) _ptr_ = (field); (field) = ((void*)0); _ptr_ ; }); | |||
| 487 | *ret_size = size + 9; | |||
| 488 | ||||
| 489 | return 0; | |||
| 490 | } | |||
| 491 | ||||
| 492 | /* Joins /proc/[pid]/fd/ and /proc/[pid]/fdinfo/ into the following lines: | |||
| 493 | * 0:/dev/pts/23 | |||
| 494 | * pos: 0 | |||
| 495 | * flags: 0100002 | |||
| 496 | * | |||
| 497 | * 1:/dev/pts/23 | |||
| 498 | * pos: 0 | |||
| 499 | * flags: 0100002 | |||
| 500 | * | |||
| 501 | * 2:/dev/pts/23 | |||
| 502 | * pos: 0 | |||
| 503 | * flags: 0100002 | |||
| 504 | * EOF | |||
| 505 | */ | |||
| 506 | static int compose_open_fds(pid_t pid, char **open_fds) { | |||
| 507 | _cleanup_closedir___attribute__((cleanup(closedirp))) DIR *proc_fd_dir = NULL((void*)0); | |||
| 508 | _cleanup_close___attribute__((cleanup(closep))) int proc_fdinfo_fd = -1; | |||
| 509 | _cleanup_free___attribute__((cleanup(freep))) char *buffer = NULL((void*)0); | |||
| 510 | _cleanup_fclose___attribute__((cleanup(fclosep))) FILE *stream = NULL((void*)0); | |||
| 511 | const char *fddelim = "", *path; | |||
| 512 | struct dirent *dent = NULL((void*)0); | |||
| 513 | size_t size = 0; | |||
| 514 | int r = 0; | |||
| 515 | ||||
| 516 | assert(pid >= 0)do { if ((__builtin_expect(!!(!(pid >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("pid >= 0"), "../src/coredump/coredump.c" , 516, __PRETTY_FUNCTION__); } while (0); | |||
| 517 | assert(open_fds != NULL)do { if ((__builtin_expect(!!(!(open_fds != ((void*)0))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("open_fds != NULL" ), "../src/coredump/coredump.c", 517, __PRETTY_FUNCTION__); } while (0); | |||
| 518 | ||||
| 519 | path = procfs_file_alloca(pid, "fd")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "fd"); } else { _r_ = __builtin_alloca ((sizeof ("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof( pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("fd")); sprintf((char*) _r_, "/proc/""%" "i""/" "fd" , _pid_); } _r_; }); | |||
| 520 | proc_fd_dir = opendir(path); | |||
| 521 | if (!proc_fd_dir) | |||
| 522 | return -errno(*__errno_location ()); | |||
| 523 | ||||
| 524 | proc_fdinfo_fd = openat(dirfd(proc_fd_dir), "../fdinfo", O_DIRECTORY0200000|O_NOFOLLOW0400000|O_CLOEXEC02000000|O_PATH010000000); | |||
| 525 | if (proc_fdinfo_fd < 0) | |||
| 526 | return -errno(*__errno_location ()); | |||
| 527 | ||||
| 528 | stream = open_memstream(&buffer, &size); | |||
| 529 | if (!stream) | |||
| 530 | return -ENOMEM12; | |||
| 531 | ||||
| 532 | (void) __fsetlocking(stream, FSETLOCKING_BYCALLERFSETLOCKING_BYCALLER); | |||
| 533 | ||||
| 534 | FOREACH_DIRENT(dent, proc_fd_dir, return -errno)for ((*__errno_location ()) = 0, dent = readdir(proc_fd_dir); ; (*__errno_location ()) = 0, dent = readdir(proc_fd_dir)) if (!dent) { if ((*__errno_location ()) > 0) { return -(*__errno_location ()); } break; } else if (hidden_or_backup_file((dent)->d_name )) continue; else { | |||
| 535 | _cleanup_fclose___attribute__((cleanup(fclosep))) FILE *fdinfo = NULL((void*)0); | |||
| 536 | _cleanup_free___attribute__((cleanup(freep))) char *fdname = NULL((void*)0); | |||
| 537 | char line[LINE_MAX2048]; | |||
| 538 | int fd; | |||
| 539 | ||||
| 540 | r = readlinkat_malloc(dirfd(proc_fd_dir), dent->d_name, &fdname); | |||
| 541 | if (r < 0) | |||
| 542 | return r; | |||
| 543 | ||||
| 544 | fprintf(stream, "%s%s:%s\n", fddelim, dent->d_name, fdname); | |||
| 545 | fddelim = "\n"; | |||
| 546 | ||||
| 547 | /* Use the directory entry from /proc/[pid]/fd with /proc/[pid]/fdinfo */ | |||
| 548 | fd = openat(proc_fdinfo_fd, dent->d_name, O_NOFOLLOW0400000|O_CLOEXEC02000000|O_RDONLY00); | |||
| 549 | if (fd < 0) | |||
| 550 | continue; | |||
| 551 | ||||
| 552 | fdinfo = fdopen(fd, "re"); | |||
| 553 | if (!fdinfo) { | |||
| 554 | safe_close(fd); | |||
| 555 | continue; | |||
| 556 | } | |||
| 557 | ||||
| 558 | FOREACH_LINE(line, fdinfo, break)for (;;) if (!fgets(line, sizeof(line), fdinfo)) { if (ferror (fdinfo)) { break; } break; } else { | |||
| 559 | fputs(line, stream); | |||
| 560 | if (!endswith(line, "\n")) | |||
| 561 | fputc('\n', stream); | |||
| 562 | } | |||
| 563 | } | |||
| 564 | ||||
| 565 | errno(*__errno_location ()) = 0; | |||
| 566 | stream = safe_fclose(stream); | |||
| 567 | ||||
| 568 | if (errno(*__errno_location ()) > 0) | |||
| 569 | return -errno(*__errno_location ()); | |||
| 570 | ||||
| 571 | *open_fds = TAKE_PTR(buffer)({ typeof(buffer) _ptr_ = (buffer); (buffer) = ((void*)0); _ptr_ ; }); | |||
| 572 | ||||
| 573 | return 0; | |||
| 574 | } | |||
| 575 | ||||
| 576 | static int get_process_ns(pid_t pid, const char *namespace, ino_t *ns) { | |||
| 577 | const char *p; | |||
| 578 | struct stat stbuf; | |||
| 579 | _cleanup_close___attribute__((cleanup(closep))) int proc_ns_dir_fd; | |||
| 580 | ||||
| 581 | p = procfs_file_alloca(pid, "ns")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "ns"); } else { _r_ = __builtin_alloca ((sizeof ("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof( pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("ns")); sprintf((char*) _r_, "/proc/""%" "i""/" "ns" , _pid_); } _r_; }); | |||
| 582 | ||||
| 583 | proc_ns_dir_fd = open(p, O_DIRECTORY0200000 | O_CLOEXEC02000000 | O_RDONLY00); | |||
| 584 | if (proc_ns_dir_fd < 0) | |||
| 585 | return -errno(*__errno_location ()); | |||
| 586 | ||||
| 587 | if (fstatat(proc_ns_dir_fd, namespace, &stbuf, /* flags */0) < 0) | |||
| 588 | return -errno(*__errno_location ()); | |||
| 589 | ||||
| 590 | *ns = stbuf.st_ino; | |||
| 591 | return 0; | |||
| 592 | } | |||
| 593 | ||||
| 594 | static int get_mount_namespace_leader(pid_t pid, pid_t *container_pid) { | |||
| 595 | pid_t cpid = pid, ppid = 0; | |||
| 596 | ino_t proc_mntns; | |||
| 597 | int r = 0; | |||
| 598 | ||||
| 599 | r = get_process_ns(pid, "mnt", &proc_mntns); | |||
| 600 | if (r < 0) | |||
| 601 | return r; | |||
| 602 | ||||
| 603 | for (;;) { | |||
| 604 | ino_t parent_mntns; | |||
| 605 | ||||
| 606 | r = get_process_ppid(cpid, &ppid); | |||
| 607 | if (r < 0) | |||
| 608 | return r; | |||
| 609 | ||||
| 610 | r = get_process_ns(ppid, "mnt", &parent_mntns); | |||
| 611 | if (r < 0) | |||
| 612 | return r; | |||
| 613 | ||||
| 614 | if (proc_mntns != parent_mntns) | |||
| ||||
| 615 | break; | |||
| 616 | ||||
| 617 | if (ppid == 1) | |||
| 618 | return -ENOENT2; | |||
| 619 | ||||
| 620 | cpid = ppid; | |||
| 621 | } | |||
| 622 | ||||
| 623 | *container_pid = ppid; | |||
| 624 | return 0; | |||
| 625 | } | |||
| 626 | ||||
| 627 | /* Returns 1 if the parent was found. | |||
| 628 | * Returns 0 if there is not a process we can call the pid's | |||
| 629 | * container parent (the pid's process isn't 'containerized'). | |||
| 630 | * Returns a negative number on errors. | |||
| 631 | */ | |||
| 632 | static int get_process_container_parent_cmdline(pid_t pid, char** cmdline) { | |||
| 633 | int r = 0; | |||
| 634 | pid_t container_pid; | |||
| 635 | const char *proc_root_path; | |||
| 636 | struct stat root_stat, proc_root_stat; | |||
| 637 | ||||
| 638 | /* To compare inodes of / and /proc/[pid]/root */ | |||
| 639 | if (stat("/", &root_stat) < 0) | |||
| 640 | return -errno(*__errno_location ()); | |||
| 641 | ||||
| 642 | proc_root_path = procfs_file_alloca(pid, "root")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "root"); } else { _r_ = __builtin_alloca (( sizeof("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof (pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("root")); sprintf((char*) _r_, "/proc/""%" "i""/" "root" , _pid_); } _r_; }); | |||
| 643 | if (stat(proc_root_path, &proc_root_stat) < 0) | |||
| 644 | return -errno(*__errno_location ()); | |||
| 645 | ||||
| 646 | /* The process uses system root. */ | |||
| 647 | if (proc_root_stat.st_ino == root_stat.st_ino) { | |||
| 648 | *cmdline = NULL((void*)0); | |||
| 649 | return 0; | |||
| 650 | } | |||
| 651 | ||||
| 652 | r = get_mount_namespace_leader(pid, &container_pid); | |||
| 653 | if (r < 0) | |||
| 654 | return r; | |||
| 655 | ||||
| 656 | r = get_process_cmdline(container_pid, 0, false0, cmdline); | |||
| 657 | if (r < 0) | |||
| 658 | return r; | |||
| 659 | ||||
| 660 | return 1; | |||
| 661 | } | |||
| 662 | ||||
| 663 | static int change_uid_gid(const char *context[]) { | |||
| 664 | uid_t uid; | |||
| 665 | gid_t gid; | |||
| 666 | int r; | |||
| 667 | ||||
| 668 | r = parse_uid(context[CONTEXT_UID], &uid); | |||
| 669 | if (r < 0) | |||
| 670 | return r; | |||
| 671 | ||||
| 672 | if (uid <= SYSTEM_UID_MAX999) { | |||
| 673 | const char *user = "systemd-coredump"; | |||
| 674 | ||||
| 675 | r = get_user_creds(&user, &uid, &gid, NULL((void*)0), NULL((void*)0)); | |||
| 676 | if (r < 0) { | |||
| 677 | log_warning_errno(r, "Cannot resolve %s user. Proceeding to dump core as root: %m", user)({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 677, __func__, "Cannot resolve %s user. Proceeding to dump core as root: %m" , user) : -abs(_e); }); | |||
| 678 | uid = gid = 0; | |||
| 679 | } | |||
| 680 | } else { | |||
| 681 | r = parse_gid(context[CONTEXT_GID], &gid); | |||
| 682 | if (r < 0) | |||
| 683 | return r; | |||
| 684 | } | |||
| 685 | ||||
| 686 | return drop_privileges(uid, gid, 0); | |||
| 687 | } | |||
| 688 | ||||
| 689 | static bool_Bool is_journald_crash(const char *context[_CONTEXT_MAX]) { | |||
| 690 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 690, __PRETTY_FUNCTION__); } while (0); | |||
| 691 | ||||
| 692 | return streq_ptr(context[CONTEXT_UNIT], SPECIAL_JOURNALD_SERVICE"systemd-journald.service"); | |||
| 693 | } | |||
| 694 | ||||
| 695 | static bool_Bool is_pid1_crash(const char *context[_CONTEXT_MAX]) { | |||
| 696 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 696, __PRETTY_FUNCTION__); } while (0); | |||
| 697 | ||||
| 698 | return streq_ptr(context[CONTEXT_UNIT], SPECIAL_INIT_SCOPE"init.scope") || | |||
| 699 | streq_ptr(context[CONTEXT_PID], "1"); | |||
| 700 | } | |||
| 701 | ||||
| 702 | #define SUBMIT_COREDUMP_FIELDS4 4 | |||
| 703 | ||||
| 704 | static int submit_coredump( | |||
| 705 | const char *context[_CONTEXT_MAX], | |||
| 706 | struct iovec *iovec, | |||
| 707 | size_t n_iovec_allocated, | |||
| 708 | size_t n_iovec, | |||
| 709 | int input_fd) { | |||
| 710 | ||||
| 711 | _cleanup_close___attribute__((cleanup(closep))) int coredump_fd = -1, coredump_node_fd = -1; | |||
| 712 | _cleanup_free___attribute__((cleanup(freep))) char *core_message = NULL((void*)0), *filename = NULL((void*)0), *coredump_data = NULL((void*)0); | |||
| 713 | uint64_t coredump_size = UINT64_MAX(18446744073709551615UL); | |||
| 714 | bool_Bool truncated = false0, journald_crash; | |||
| 715 | int r; | |||
| 716 | ||||
| 717 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 717, __PRETTY_FUNCTION__); } while (0); | |||
| 718 | assert(iovec)do { if ((__builtin_expect(!!(!(iovec)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("iovec"), "../src/coredump/coredump.c", 718 , __PRETTY_FUNCTION__); } while (0); | |||
| 719 | assert(n_iovec_allocated >= n_iovec + SUBMIT_COREDUMP_FIELDS)do { if ((__builtin_expect(!!(!(n_iovec_allocated >= n_iovec + 4)),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("n_iovec_allocated >= n_iovec + SUBMIT_COREDUMP_FIELDS" ), "../src/coredump/coredump.c", 719, __PRETTY_FUNCTION__); } while (0); | |||
| 720 | assert(input_fd >= 0)do { if ((__builtin_expect(!!(!(input_fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("input_fd >= 0"), "../src/coredump/coredump.c" , 720, __PRETTY_FUNCTION__); } while (0); | |||
| 721 | ||||
| 722 | journald_crash = is_journald_crash(context); | |||
| 723 | ||||
| 724 | /* Vacuum before we write anything again */ | |||
| 725 | (void) coredump_vacuum(-1, arg_keep_free, arg_max_use); | |||
| 726 | ||||
| 727 | /* Always stream the coredump to disk, if that's possible */ | |||
| 728 | r = save_external_coredump(context, input_fd, | |||
| 729 | &filename, &coredump_node_fd, &coredump_fd, &coredump_size, &truncated); | |||
| 730 | if (r < 0) | |||
| 731 | /* Skip whole core dumping part */ | |||
| 732 | goto log; | |||
| 733 | ||||
| 734 | /* If we don't want to keep the coredump on disk, remove it now, as later on we will lack the privileges for | |||
| 735 | * it. However, we keep the fd to it, so that we can still process it and log it. */ | |||
| 736 | r = maybe_remove_external_coredump(filename, coredump_size); | |||
| 737 | if (r < 0) | |||
| 738 | return r; | |||
| 739 | if (r == 0) { | |||
| 740 | const char *coredump_filename; | |||
| 741 | ||||
| 742 | coredump_filename = strjoina("COREDUMP_FILENAME=", filename)({ const char *_appendees_[] = { "COREDUMP_FILENAME=", filename }; 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_; }); | |||
| 743 | iovec[n_iovec++] = IOVEC_MAKE_STRING(coredump_filename)(struct iovec) { .iov_base = ((char*) coredump_filename), .iov_len = (strlen(coredump_filename)) }; | |||
| 744 | } else if (arg_storage == COREDUMP_STORAGE_EXTERNAL) | |||
| 745 | log_info("The core will not be stored: size %"PRIu64" is greater than %"PRIu64" (the configured maximum)",({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 746, __func__, "The core will not be stored: size %" "l" "u"" is greater than %""l" "u"" (the configured maximum)" , coredump_size, arg_external_size_max) : -abs(_e); }) | |||
| 746 | coredump_size, arg_external_size_max)({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 746, __func__, "The core will not be stored: size %" "l" "u"" is greater than %""l" "u"" (the configured maximum)" , coredump_size, arg_external_size_max) : -abs(_e); }); | |||
| 747 | ||||
| 748 | /* Vacuum again, but exclude the coredump we just created */ | |||
| 749 | (void) coredump_vacuum(coredump_node_fd >= 0 ? coredump_node_fd : coredump_fd, arg_keep_free, arg_max_use); | |||
| 750 | ||||
| 751 | /* Now, let's drop privileges to become the user who owns the segfaulted process and allocate the coredump | |||
| 752 | * memory under the user's uid. This also ensures that the credentials journald will see are the ones of the | |||
| 753 | * coredumping user, thus making sure the user gets access to the core dump. Let's also get rid of all | |||
| 754 | * capabilities, if we run as root, we won't need them anymore. */ | |||
| 755 | r = change_uid_gid(context); | |||
| 756 | if (r < 0) | |||
| 757 | return log_error_errno(r, "Failed to drop privileges: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 757, __func__, "Failed to drop privileges: %m" ) : -abs(_e); }); | |||
| 758 | ||||
| 759 | #if HAVE_ELFUTILS1 | |||
| 760 | /* Try to get a strack trace if we can */ | |||
| 761 | if (coredump_size <= arg_process_size_max) { | |||
| 762 | _cleanup_free___attribute__((cleanup(freep))) char *stacktrace = NULL((void*)0); | |||
| 763 | ||||
| 764 | r = coredump_make_stack_trace(coredump_fd, context[CONTEXT_EXE], &stacktrace); | |||
| 765 | if (r >= 0) | |||
| 766 | core_message = strjoin("MESSAGE=Process ", context[CONTEXT_PID],strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash ? "\nCoredump diverted to " : "", journald_crash ? filename : "", "\n\n", stacktrace, ((void*)0)) | |||
| 767 | " (", context[CONTEXT_COMM], ") of user ",strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash ? "\nCoredump diverted to " : "", journald_crash ? filename : "", "\n\n", stacktrace, ((void*)0)) | |||
| 768 | context[CONTEXT_UID], " dumped core.",strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash ? "\nCoredump diverted to " : "", journald_crash ? filename : "", "\n\n", stacktrace, ((void*)0)) | |||
| 769 | journald_crash ? "\nCoredump diverted to " : "",strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash ? "\nCoredump diverted to " : "", journald_crash ? filename : "", "\n\n", stacktrace, ((void*)0)) | |||
| 770 | journald_crash ? filename : "",strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash ? "\nCoredump diverted to " : "", journald_crash ? filename : "", "\n\n", stacktrace, ((void*)0)) | |||
| 771 | "\n\n", stacktrace)strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash ? "\nCoredump diverted to " : "", journald_crash ? filename : "", "\n\n", stacktrace, ((void*)0)); | |||
| 772 | else if (r == -EINVAL22) | |||
| 773 | log_warning("Failed to generate stack trace: %s", dwfl_errmsg(dwfl_errno()))({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 773, __func__, "Failed to generate stack trace: %s" , dwfl_errmsg(dwfl_errno())) : -abs(_e); }); | |||
| 774 | else | |||
| 775 | log_warning_errno(r, "Failed to generate stack trace: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 775, __func__, "Failed to generate stack trace: %m" ) : -abs(_e); }); | |||
| 776 | } else | |||
| 777 | log_debug("Not generating stack trace: core size %"PRIu64" is greater than %"PRIu64" (the configured maximum)",({ 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/coredump/coredump.c", 778, __func__, "Not generating stack trace: core size %" "l" "u"" is greater than %""l" "u"" (the configured maximum)" , coredump_size, arg_process_size_max) : -abs(_e); }) | |||
| 778 | coredump_size, arg_process_size_max)({ 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/coredump/coredump.c", 778, __func__, "Not generating stack trace: core size %" "l" "u"" is greater than %""l" "u"" (the configured maximum)" , coredump_size, arg_process_size_max) : -abs(_e); }); | |||
| 779 | ||||
| 780 | if (!core_message) | |||
| 781 | #endif | |||
| 782 | log: | |||
| 783 | core_message = strjoin("MESSAGE=Process ", context[CONTEXT_PID],strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash && filename ? "\nCoredump diverted to " : ((void*)0), journald_crash && filename ? filename : ((void*)0), ((void*)0)) | |||
| 784 | " (", context[CONTEXT_COMM], ") of user ",strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash && filename ? "\nCoredump diverted to " : ((void*)0), journald_crash && filename ? filename : ((void*)0), ((void*)0)) | |||
| 785 | context[CONTEXT_UID], " dumped core.",strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash && filename ? "\nCoredump diverted to " : ((void*)0), journald_crash && filename ? filename : ((void*)0), ((void*)0)) | |||
| 786 | journald_crash && filename ? "\nCoredump diverted to " : NULL,strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash && filename ? "\nCoredump diverted to " : ((void*)0), journald_crash && filename ? filename : ((void*)0), ((void*)0)) | |||
| 787 | journald_crash && filename ? filename : NULL)strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ") of user ", context[CONTEXT_UID], " dumped core." , journald_crash && filename ? "\nCoredump diverted to " : ((void*)0), journald_crash && filename ? filename : ((void*)0), ((void*)0)); | |||
| 788 | if (!core_message) | |||
| 789 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 789, __func__); | |||
| 790 | ||||
| 791 | if (journald_crash) { | |||
| 792 | /* We cannot log to the journal, so just print the message. | |||
| 793 | * The target was set previously to something safe. */ | |||
| 794 | assert(startswith(core_message, "MESSAGE="))do { if ((__builtin_expect(!!(!(startswith(core_message, "MESSAGE=" ))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("startswith(core_message, \"MESSAGE=\")" ), "../src/coredump/coredump.c", 794, __PRETTY_FUNCTION__); } while (0); | |||
| 795 | log_dispatch(LOG_ERR, 0, core_message + strlen("MESSAGE="))log_dispatch_internal(3, 0, "../src/coredump/coredump.c", 795 , __func__, ((void*)0), ((void*)0), ((void*)0), ((void*)0), core_message + strlen("MESSAGE=")); | |||
| 796 | return 0; | |||
| 797 | } | |||
| 798 | ||||
| 799 | iovec[n_iovec++] = IOVEC_MAKE_STRING(core_message)(struct iovec) { .iov_base = ((char*) core_message), .iov_len = (strlen(core_message)) }; | |||
| 800 | ||||
| 801 | if (truncated) | |||
| 802 | iovec[n_iovec++] = IOVEC_MAKE_STRING("COREDUMP_TRUNCATED=1")(struct iovec) { .iov_base = ((char*) "COREDUMP_TRUNCATED=1") , .iov_len = (strlen("COREDUMP_TRUNCATED=1")) }; | |||
| 803 | ||||
| 804 | /* Optionally store the entire coredump in the journal */ | |||
| 805 | if (arg_storage == COREDUMP_STORAGE_JOURNAL) { | |||
| 806 | if (coredump_size <= arg_journal_size_max) { | |||
| 807 | size_t sz = 0; | |||
| 808 | ||||
| 809 | /* Store the coredump itself in the journal */ | |||
| 810 | ||||
| 811 | r = allocate_journal_field(coredump_fd, (size_t) coredump_size, &coredump_data, &sz); | |||
| 812 | if (r >= 0) | |||
| 813 | iovec[n_iovec++] = IOVEC_MAKE(coredump_data, sz)(struct iovec) { .iov_base = (coredump_data), .iov_len = (sz) }; | |||
| 814 | else | |||
| 815 | log_warning_errno(r, "Failed to attach the core to the journal entry: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 815, __func__, "Failed to attach the core to the journal entry: %m" ) : -abs(_e); }); | |||
| 816 | } else | |||
| 817 | log_info("The core will not be stored: size %"PRIu64" is greater than %"PRIu64" (the configured maximum)",({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 818, __func__, "The core will not be stored: size %" "l" "u"" is greater than %""l" "u"" (the configured maximum)" , coredump_size, arg_journal_size_max) : -abs(_e); }) | |||
| 818 | coredump_size, arg_journal_size_max)({ int _level = (((6))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 818, __func__, "The core will not be stored: size %" "l" "u"" is greater than %""l" "u"" (the configured maximum)" , coredump_size, arg_journal_size_max) : -abs(_e); }); | |||
| 819 | } | |||
| 820 | ||||
| 821 | assert(n_iovec <= n_iovec_allocated)do { if ((__builtin_expect(!!(!(n_iovec <= n_iovec_allocated )),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("n_iovec <= n_iovec_allocated" ), "../src/coredump/coredump.c", 821, __PRETTY_FUNCTION__); } while (0); | |||
| 822 | ||||
| 823 | r = sd_journal_sendv(iovec, n_iovec)sd_journal_sendv_with_location("CODE_FILE=" "../src/coredump/coredump.c" , "CODE_LINE=" "823", __func__, iovec, n_iovec); | |||
| 824 | if (r < 0) | |||
| 825 | return log_error_errno(r, "Failed to log coredump: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 825, __func__, "Failed to log coredump: %m" ) : -abs(_e); }); | |||
| 826 | ||||
| 827 | return 0; | |||
| 828 | } | |||
| 829 | ||||
| 830 | static void map_context_fields(const struct iovec *iovec, const char* context[]) { | |||
| 831 | ||||
| 832 | static const char * const context_field_names[] = { | |||
| 833 | [CONTEXT_PID] = "COREDUMP_PID=", | |||
| 834 | [CONTEXT_UID] = "COREDUMP_UID=", | |||
| 835 | [CONTEXT_GID] = "COREDUMP_GID=", | |||
| 836 | [CONTEXT_SIGNAL] = "COREDUMP_SIGNAL=", | |||
| 837 | [CONTEXT_TIMESTAMP] = "COREDUMP_TIMESTAMP=", | |||
| 838 | [CONTEXT_RLIMIT] = "COREDUMP_RLIMIT=", | |||
| 839 | [CONTEXT_HOSTNAME] = "COREDUMP_HOSTNAME=", | |||
| 840 | [CONTEXT_COMM] = "COREDUMP_COMM=", | |||
| 841 | [CONTEXT_EXE] = "COREDUMP_EXE=", | |||
| 842 | }; | |||
| 843 | ||||
| 844 | unsigned i; | |||
| 845 | ||||
| 846 | assert(iovec)do { if ((__builtin_expect(!!(!(iovec)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("iovec"), "../src/coredump/coredump.c", 846 , __PRETTY_FUNCTION__); } while (0); | |||
| 847 | assert(context)do { if ((__builtin_expect(!!(!(context)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context"), "../src/coredump/coredump.c" , 847, __PRETTY_FUNCTION__); } while (0); | |||
| 848 | ||||
| 849 | for (i = 0; i < ELEMENTSOF(context_field_names)__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(context_field_names), typeof(&*(context_field_names ))), sizeof(context_field_names)/sizeof((context_field_names) [0]), ((void)0))); i++) { | |||
| 850 | char *p; | |||
| 851 | ||||
| 852 | if (!context_field_names[i]) | |||
| 853 | continue; | |||
| 854 | ||||
| 855 | p = memory_startswith(iovec->iov_base, iovec->iov_len, context_field_names[i]); | |||
| 856 | if (!p) | |||
| 857 | continue; | |||
| 858 | ||||
| 859 | /* Note that these strings are NUL terminated, because we made sure that a trailing NUL byte is in the | |||
| 860 | * buffer, though not included in the iov_len count. (see below) */ | |||
| 861 | context[i] = p; | |||
| 862 | break; | |||
| 863 | } | |||
| 864 | } | |||
| 865 | ||||
| 866 | static int process_socket(int fd) { | |||
| 867 | _cleanup_close___attribute__((cleanup(closep))) int coredump_fd = -1; | |||
| 868 | struct iovec *iovec = NULL((void*)0); | |||
| 869 | size_t n_iovec = 0, n_allocated = 0, i, k; | |||
| 870 | const char *context[_CONTEXT_MAX] = {}; | |||
| 871 | int r; | |||
| 872 | ||||
| 873 | assert(fd >= 0)do { if ((__builtin_expect(!!(!(fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("fd >= 0"), "../src/coredump/coredump.c" , 873, __PRETTY_FUNCTION__); } while (0); | |||
| 874 | ||||
| 875 | log_set_target(LOG_TARGET_AUTO); | |||
| 876 | log_parse_environment()log_parse_environment_realm(LOG_REALM_SYSTEMD); | |||
| 877 | log_open(); | |||
| 878 | ||||
| 879 | log_debug("Processing coredump received on stdin...")({ 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/coredump/coredump.c", 879, __func__, "Processing coredump received on stdin..." ) : -abs(_e); }); | |||
| 880 | ||||
| 881 | for (;;) { | |||
| 882 | union { | |||
| 883 | struct cmsghdr cmsghdr; | |||
| 884 | uint8_t buf[CMSG_SPACE(sizeof(int))((((sizeof(int)) + sizeof (size_t) - 1) & (size_t) ~(sizeof (size_t) - 1)) + (((sizeof (struct cmsghdr)) + sizeof (size_t ) - 1) & (size_t) ~(sizeof (size_t) - 1)))]; | |||
| 885 | } control = {}; | |||
| 886 | struct msghdr mh = { | |||
| 887 | .msg_control = &control, | |||
| 888 | .msg_controllen = sizeof(control), | |||
| 889 | .msg_iovlen = 1, | |||
| 890 | }; | |||
| 891 | ssize_t n; | |||
| 892 | ssize_t l; | |||
| 893 | ||||
| 894 | if (!GREEDY_REALLOC(iovec, n_allocated, n_iovec + SUBMIT_COREDUMP_FIELDS)greedy_realloc((void**) &(iovec), &(n_allocated), (n_iovec + 4), sizeof((iovec)[0]))) { | |||
| 895 | r = log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 895, __func__); | |||
| 896 | goto finish; | |||
| 897 | } | |||
| 898 | ||||
| 899 | l = next_datagram_size_fd(fd); | |||
| 900 | if (l < 0) { | |||
| 901 | r = log_error_errno(l, "Failed to determine datagram size to read: %m")({ int _level = ((3)), _e = ((l)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 901, __func__, "Failed to determine datagram size to read: %m" ) : -abs(_e); }); | |||
| 902 | goto finish; | |||
| 903 | } | |||
| 904 | ||||
| 905 | assert(l >= 0)do { if ((__builtin_expect(!!(!(l >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("l >= 0"), "../src/coredump/coredump.c" , 905, __PRETTY_FUNCTION__); } while (0); | |||
| 906 | ||||
| 907 | iovec[n_iovec].iov_len = l; | |||
| 908 | iovec[n_iovec].iov_base = malloc(l + 1); | |||
| 909 | if (!iovec[n_iovec].iov_base) { | |||
| 910 | r = log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 910, __func__); | |||
| 911 | goto finish; | |||
| 912 | } | |||
| 913 | ||||
| 914 | mh.msg_iov = iovec + n_iovec; | |||
| 915 | ||||
| 916 | n = recvmsg(fd, &mh, MSG_CMSG_CLOEXECMSG_CMSG_CLOEXEC); | |||
| 917 | if (n < 0) { | |||
| 918 | free(iovec[n_iovec].iov_base); | |||
| 919 | r = log_error_errno(errno, "Failed to receive datagram: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 919, __func__ , "Failed to receive datagram: %m") : -abs(_e); }); | |||
| 920 | goto finish; | |||
| 921 | } | |||
| 922 | ||||
| 923 | if (n == 0) { | |||
| 924 | struct cmsghdr *cmsg, *found = NULL((void*)0); | |||
| 925 | /* The final zero-length datagram carries the file descriptor and tells us that we're done. */ | |||
| 926 | ||||
| 927 | free(iovec[n_iovec].iov_base); | |||
| 928 | ||||
| 929 | CMSG_FOREACH(cmsg, &mh)for ((cmsg) = ((size_t) (&mh)->msg_controllen >= sizeof (struct cmsghdr) ? (struct cmsghdr *) (&mh)->msg_control : (struct cmsghdr *) 0); (cmsg); (cmsg) = __cmsg_nxthdr ((& mh), (cmsg))) { | |||
| 930 | if (cmsg->cmsg_level == SOL_SOCKET1 && | |||
| 931 | cmsg->cmsg_type == SCM_RIGHTSSCM_RIGHTS && | |||
| 932 | cmsg->cmsg_len == CMSG_LEN(sizeof(int))((((sizeof (struct cmsghdr)) + sizeof (size_t) - 1) & (size_t ) ~(sizeof (size_t) - 1)) + (sizeof(int)))) { | |||
| 933 | assert(!found)do { if ((__builtin_expect(!!(!(!found)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("!found"), "../src/coredump/coredump.c", 933, __PRETTY_FUNCTION__); } while (0); | |||
| 934 | found = cmsg; | |||
| 935 | } | |||
| 936 | } | |||
| 937 | ||||
| 938 | if (!found) { | |||
| 939 | log_error("Coredump file descriptor missing.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 939, __func__, "Coredump file descriptor missing." ) : -abs(_e); }); | |||
| 940 | r = -EBADMSG74; | |||
| 941 | goto finish; | |||
| 942 | } | |||
| 943 | ||||
| 944 | assert(coredump_fd < 0)do { if ((__builtin_expect(!!(!(coredump_fd < 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("coredump_fd < 0"), "../src/coredump/coredump.c" , 944, __PRETTY_FUNCTION__); } while (0); | |||
| 945 | coredump_fd = *(int*) CMSG_DATA(found)((found)->__cmsg_data); | |||
| 946 | break; | |||
| 947 | } | |||
| 948 | ||||
| 949 | /* Add trailing NUL byte, in case these are strings */ | |||
| 950 | ((char*) iovec[n_iovec].iov_base)[n] = 0; | |||
| 951 | iovec[n_iovec].iov_len = (size_t) n; | |||
| 952 | ||||
| 953 | cmsg_close_all(&mh); | |||
| 954 | map_context_fields(iovec + n_iovec, context); | |||
| 955 | n_iovec++; | |||
| 956 | } | |||
| 957 | ||||
| 958 | if (!GREEDY_REALLOC(iovec, n_allocated, n_iovec + SUBMIT_COREDUMP_FIELDS)greedy_realloc((void**) &(iovec), &(n_allocated), (n_iovec + 4), sizeof((iovec)[0]))) { | |||
| 959 | r = log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 959, __func__); | |||
| 960 | goto finish; | |||
| 961 | } | |||
| 962 | ||||
| 963 | /* Make sure we got all data we really need */ | |||
| 964 | assert(context[CONTEXT_PID])do { if ((__builtin_expect(!!(!(context[CONTEXT_PID])),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context[CONTEXT_PID]"), "../src/coredump/coredump.c" , 964, __PRETTY_FUNCTION__); } while (0); | |||
| 965 | assert(context[CONTEXT_UID])do { if ((__builtin_expect(!!(!(context[CONTEXT_UID])),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context[CONTEXT_UID]"), "../src/coredump/coredump.c" , 965, __PRETTY_FUNCTION__); } while (0); | |||
| 966 | assert(context[CONTEXT_GID])do { if ((__builtin_expect(!!(!(context[CONTEXT_GID])),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context[CONTEXT_GID]"), "../src/coredump/coredump.c" , 966, __PRETTY_FUNCTION__); } while (0); | |||
| 967 | assert(context[CONTEXT_SIGNAL])do { if ((__builtin_expect(!!(!(context[CONTEXT_SIGNAL])),0)) ) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("context[CONTEXT_SIGNAL]" ), "../src/coredump/coredump.c", 967, __PRETTY_FUNCTION__); } while (0); | |||
| 968 | assert(context[CONTEXT_TIMESTAMP])do { if ((__builtin_expect(!!(!(context[CONTEXT_TIMESTAMP])), 0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("context[CONTEXT_TIMESTAMP]" ), "../src/coredump/coredump.c", 968, __PRETTY_FUNCTION__); } while (0); | |||
| 969 | assert(context[CONTEXT_RLIMIT])do { if ((__builtin_expect(!!(!(context[CONTEXT_RLIMIT])),0)) ) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("context[CONTEXT_RLIMIT]" ), "../src/coredump/coredump.c", 969, __PRETTY_FUNCTION__); } while (0); | |||
| 970 | assert(context[CONTEXT_HOSTNAME])do { if ((__builtin_expect(!!(!(context[CONTEXT_HOSTNAME])),0 ))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("context[CONTEXT_HOSTNAME]" ), "../src/coredump/coredump.c", 970, __PRETTY_FUNCTION__); } while (0); | |||
| 971 | assert(context[CONTEXT_COMM])do { if ((__builtin_expect(!!(!(context[CONTEXT_COMM])),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("context[CONTEXT_COMM]"), "../src/coredump/coredump.c" , 971, __PRETTY_FUNCTION__); } while (0); | |||
| 972 | assert(coredump_fd >= 0)do { if ((__builtin_expect(!!(!(coredump_fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("coredump_fd >= 0"), "../src/coredump/coredump.c" , 972, __PRETTY_FUNCTION__); } while (0); | |||
| 973 | ||||
| 974 | /* Small quirk: the journal fields contain the timestamp padded with six zeroes, so that the kernel-supplied 1s | |||
| 975 | * granularity timestamps becomes 1µs granularity, i.e. the granularity systemd usually operates in. Since we | |||
| 976 | * are reconstructing the original kernel context, we chop this off again, here. */ | |||
| 977 | k = strlen(context[CONTEXT_TIMESTAMP]); | |||
| 978 | if (k > 6) | |||
| 979 | context[CONTEXT_TIMESTAMP] = strndupa(context[CONTEXT_TIMESTAMP], k - 6)(__extension__ ({ const char *__old = (context[CONTEXT_TIMESTAMP ]); size_t __len = strnlen (__old, (k - 6)); char *__new = (char *) __builtin_alloca (__len + 1); __new[__len] = '\0'; (char * ) memcpy (__new, __old, __len); })); | |||
| 980 | ||||
| 981 | r = submit_coredump(context, iovec, n_allocated, n_iovec, coredump_fd); | |||
| 982 | ||||
| 983 | finish: | |||
| 984 | for (i = 0; i < n_iovec; i++) | |||
| 985 | free(iovec[i].iov_base); | |||
| 986 | free(iovec); | |||
| 987 | ||||
| 988 | return r; | |||
| 989 | } | |||
| 990 | ||||
| 991 | static int send_iovec(const struct iovec iovec[], size_t n_iovec, int input_fd) { | |||
| 992 | ||||
| 993 | static const union sockaddr_union sa = { | |||
| 994 | .un.sun_family = AF_UNIX1, | |||
| 995 | .un.sun_path = "/run/systemd/coredump", | |||
| 996 | }; | |||
| 997 | _cleanup_close___attribute__((cleanup(closep))) int fd = -1; | |||
| 998 | size_t i; | |||
| 999 | int r; | |||
| 1000 | ||||
| 1001 | assert(iovec || n_iovec <= 0)do { if ((__builtin_expect(!!(!(iovec || n_iovec <= 0)),0) )) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("iovec || n_iovec <= 0" ), "../src/coredump/coredump.c", 1001, __PRETTY_FUNCTION__); } while (0); | |||
| 1002 | assert(input_fd >= 0)do { if ((__builtin_expect(!!(!(input_fd >= 0)),0))) log_assert_failed_realm (LOG_REALM_SYSTEMD, ("input_fd >= 0"), "../src/coredump/coredump.c" , 1002, __PRETTY_FUNCTION__); } while (0); | |||
| 1003 | ||||
| 1004 | fd = socket(AF_UNIX1, SOCK_SEQPACKETSOCK_SEQPACKET|SOCK_CLOEXECSOCK_CLOEXEC, 0); | |||
| 1005 | if (fd < 0) | |||
| 1006 | return log_error_errno(errno, "Failed to create coredump socket: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 1006, __func__ , "Failed to create coredump socket: %m") : -abs(_e); }); | |||
| 1007 | ||||
| 1008 | if (connect(fd, &sa.sa, SOCKADDR_UN_LEN(sa.un)({ const struct sockaddr_un *_sa = &(sa.un); do { if ((__builtin_expect (!!(!(_sa->sun_family == 1)),0))) log_assert_failed_realm( LOG_REALM_SYSTEMD, ("_sa->sun_family == AF_UNIX"), "../src/coredump/coredump.c" , 1008, __PRETTY_FUNCTION__); } while (0); __builtin_offsetof (struct sockaddr_un, sun_path) + (_sa->sun_path[0] == 0 ? 1 + strnlen(_sa->sun_path+1, sizeof(_sa->sun_path)-1) : strnlen (_sa->sun_path, sizeof(_sa->sun_path))); })) < 0) | |||
| 1009 | return log_error_errno(errno, "Failed to connect to coredump service: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 1009, __func__ , "Failed to connect to coredump service: %m") : -abs(_e); }); | |||
| 1010 | ||||
| 1011 | for (i = 0; i < n_iovec; i++) { | |||
| 1012 | struct msghdr mh = { | |||
| 1013 | .msg_iov = (struct iovec*) iovec + i, | |||
| 1014 | .msg_iovlen = 1, | |||
| 1015 | }; | |||
| 1016 | struct iovec copy[2]; | |||
| 1017 | ||||
| 1018 | for (;;) { | |||
| 1019 | if (sendmsg(fd, &mh, MSG_NOSIGNALMSG_NOSIGNAL) >= 0) | |||
| 1020 | break; | |||
| 1021 | ||||
| 1022 | if (errno(*__errno_location ()) == EMSGSIZE90 && mh.msg_iov[0].iov_len > 0) { | |||
| 1023 | /* This field didn't fit? That's a pity. Given that this is just metadata, | |||
| 1024 | * let's truncate the field at half, and try again. We append three dots, in | |||
| 1025 | * order to show that this is truncated. */ | |||
| 1026 | ||||
| 1027 | if (mh.msg_iov != copy) { | |||
| 1028 | /* We don't want to modify the caller's iovec, hence let's create our | |||
| 1029 | * own array, consisting of two new iovecs, where the first is a | |||
| 1030 | * (truncated) copy of what we want to send, and the second one | |||
| 1031 | * contains the trailing dots. */ | |||
| 1032 | copy[0] = iovec[i]; | |||
| 1033 | copy[1] = (struct iovec) { | |||
| 1034 | .iov_base = (char[]) { '.', '.', '.' }, | |||
| 1035 | .iov_len = 3, | |||
| 1036 | }; | |||
| 1037 | ||||
| 1038 | mh.msg_iov = copy; | |||
| 1039 | mh.msg_iovlen = 2; | |||
| 1040 | } | |||
| 1041 | ||||
| 1042 | copy[0].iov_len /= 2; /* halve it, and try again */ | |||
| 1043 | continue; | |||
| 1044 | } | |||
| 1045 | ||||
| 1046 | return log_error_errno(errno, "Failed to send coredump datagram: %m")({ int _level = ((3)), _e = (((*__errno_location ()))), _realm = (LOG_REALM_SYSTEMD); (log_get_max_level_realm(_realm) >= ((_level) & 0x07)) ? log_internal_realm(((_realm) << 10 | (_level)), _e, "../src/coredump/coredump.c", 1046, __func__ , "Failed to send coredump datagram: %m") : -abs(_e); }); | |||
| 1047 | } | |||
| 1048 | } | |||
| 1049 | ||||
| 1050 | r = send_one_fd(fd, input_fd, 0)send_one_fd_iov_sa(fd, input_fd, ((void*)0), 0, ((void*)0), 0 , 0); | |||
| 1051 | if (r < 0) | |||
| 1052 | return log_error_errno(r, "Failed to send coredump fd: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1052, __func__, "Failed to send coredump fd: %m" ) : -abs(_e); }); | |||
| 1053 | ||||
| 1054 | return 0; | |||
| 1055 | } | |||
| 1056 | ||||
| 1057 | static char* set_iovec_field_free(struct iovec *iovec, size_t *n_iovec, const char *field, char *value) { | |||
| 1058 | char *x; | |||
| 1059 | ||||
| 1060 | x = set_iovec_string_field(iovec, n_iovec, field, value); | |||
| 1061 | free(value); | |||
| 1062 | return x; | |||
| 1063 | } | |||
| 1064 | ||||
| 1065 | static int gather_pid_metadata( | |||
| 1066 | char* context[_CONTEXT_MAX], | |||
| 1067 | char **comm_fallback, | |||
| 1068 | struct iovec *iovec, size_t *n_iovec) { | |||
| 1069 | ||||
| 1070 | /* We need 27 empty slots in iovec! | |||
| 1071 | * | |||
| 1072 | * Note that if we fail on oom later on, we do not roll-back changes to the iovec structure. (It remains valid, | |||
| 1073 | * with the first n_iovec fields initialized.) */ | |||
| 1074 | ||||
| 1075 | uid_t owner_uid; | |||
| 1076 | pid_t pid; | |||
| 1077 | char *t; | |||
| 1078 | const char *p; | |||
| 1079 | int r, signo; | |||
| 1080 | ||||
| 1081 | r = parse_pid(context[CONTEXT_PID], &pid); | |||
| 1082 | if (r < 0) | |||
| ||||
| 1083 | return log_error_errno(r, "Failed to parse PID \"%s\": %m", context[CONTEXT_PID])({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1083, __func__, "Failed to parse PID \"%s\": %m" , context[CONTEXT_PID]) : -abs(_e); }); | |||
| 1084 | ||||
| 1085 | r = get_process_comm(pid, &context[CONTEXT_COMM]); | |||
| 1086 | if (r < 0) { | |||
| 1087 | log_warning_errno(r, "Failed to get COMM, falling back to the command line: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1087, __func__, "Failed to get COMM, falling back to the command line: %m" ) : -abs(_e); }); | |||
| 1088 | context[CONTEXT_COMM] = strv_join(comm_fallback, " "); | |||
| 1089 | if (!context[CONTEXT_COMM]) | |||
| 1090 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1090, __func__); | |||
| 1091 | } | |||
| 1092 | ||||
| 1093 | r = get_process_exe(pid, &context[CONTEXT_EXE]); | |||
| 1094 | if (r < 0) | |||
| 1095 | log_warning_errno(r, "Failed to get EXE, ignoring: %m")({ int _level = ((4)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1095, __func__, "Failed to get EXE, ignoring: %m" ) : -abs(_e); }); | |||
| 1096 | ||||
| 1097 | if (cg_pid_get_unit(pid, &context[CONTEXT_UNIT]) >= 0) { | |||
| 1098 | if (!is_journald_crash((const char**) context)) { | |||
| 1099 | /* OK, now we know it's not the journal, hence we can make use of it now. */ | |||
| 1100 | log_set_target(LOG_TARGET_JOURNAL_OR_KMSG); | |||
| 1101 | log_open(); | |||
| 1102 | } | |||
| 1103 | ||||
| 1104 | /* If this is PID 1 disable coredump collection, we'll unlikely be able to process it later on. */ | |||
| 1105 | if (is_pid1_crash((const char**) context)) { | |||
| 1106 | log_notice("Due to PID 1 having crashed coredump collection will now be turned off.")({ int _level = (((5))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1106, __func__, "Due to PID 1 having crashed coredump collection will now be turned off." ) : -abs(_e); }); | |||
| 1107 | disable_coredumps(); | |||
| 1108 | } | |||
| 1109 | ||||
| 1110 | set_iovec_string_field(iovec, n_iovec, "COREDUMP_UNIT=", context[CONTEXT_UNIT]); | |||
| 1111 | } | |||
| 1112 | ||||
| 1113 | if (cg_pid_get_user_unit(pid, &t) >= 0) | |||
| 1114 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_USER_UNIT=", t); | |||
| 1115 | ||||
| 1116 | /* The next few are mandatory */ | |||
| 1117 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_PID=", context[CONTEXT_PID])) | |||
| 1118 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1118, __func__); | |||
| 1119 | ||||
| 1120 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_UID=", context[CONTEXT_UID])) | |||
| 1121 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1121, __func__); | |||
| 1122 | ||||
| 1123 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_GID=", context[CONTEXT_GID])) | |||
| 1124 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1124, __func__); | |||
| 1125 | ||||
| 1126 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_SIGNAL=", context[CONTEXT_SIGNAL])) | |||
| 1127 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1127, __func__); | |||
| 1128 | ||||
| 1129 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_RLIMIT=", context[CONTEXT_RLIMIT])) | |||
| 1130 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1130, __func__); | |||
| 1131 | ||||
| 1132 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_HOSTNAME=", context[CONTEXT_HOSTNAME])) | |||
| 1133 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1133, __func__); | |||
| 1134 | ||||
| 1135 | if (!set_iovec_string_field(iovec, n_iovec, "COREDUMP_COMM=", context[CONTEXT_COMM])) | |||
| 1136 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1136, __func__); | |||
| 1137 | ||||
| 1138 | if (context[CONTEXT_EXE] && | |||
| 1139 | !set_iovec_string_field(iovec, n_iovec, "COREDUMP_EXE=", context[CONTEXT_EXE])) | |||
| 1140 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1140, __func__); | |||
| 1141 | ||||
| 1142 | if (sd_pid_get_session(pid, &t) >= 0) | |||
| 1143 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_SESSION=", t); | |||
| 1144 | ||||
| 1145 | if (sd_pid_get_owner_uid(pid, &owner_uid) >= 0) { | |||
| 1146 | r = asprintf(&t, "COREDUMP_OWNER_UID=" UID_FMT"%" "u", owner_uid); | |||
| 1147 | if (r > 0) | |||
| 1148 | iovec[(*n_iovec)++] = IOVEC_MAKE_STRING(t)(struct iovec) { .iov_base = ((char*) t), .iov_len = (strlen( t)) }; | |||
| 1149 | } | |||
| 1150 | ||||
| 1151 | if (sd_pid_get_slice(pid, &t) >= 0) | |||
| 1152 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_SLICE=", t); | |||
| 1153 | ||||
| 1154 | if (get_process_cmdline(pid, 0, false0, &t) >= 0) | |||
| 1155 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_CMDLINE=", t); | |||
| 1156 | ||||
| 1157 | if (cg_pid_get_path_shifted(pid, NULL((void*)0), &t) >= 0) | |||
| 1158 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_CGROUP=", t); | |||
| 1159 | ||||
| 1160 | if (compose_open_fds(pid, &t) >= 0) | |||
| 1161 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_OPEN_FDS=", t); | |||
| 1162 | ||||
| 1163 | p = procfs_file_alloca(pid, "status")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "status"); } else { _r_ = __builtin_alloca ( (sizeof("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof (pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("status")); sprintf((char*) _r_, "/proc/""%" "i""/" "status", _pid_); } _r_; }); | |||
| 1164 | if (read_full_file(p, &t, NULL((void*)0)) >= 0) | |||
| 1165 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_PROC_STATUS=", t); | |||
| 1166 | ||||
| 1167 | p = procfs_file_alloca(pid, "maps")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "maps"); } else { _r_ = __builtin_alloca (( sizeof("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof (pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("maps")); sprintf((char*) _r_, "/proc/""%" "i""/" "maps" , _pid_); } _r_; }); | |||
| 1168 | if (read_full_file(p, &t, NULL((void*)0)) >= 0) | |||
| 1169 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_PROC_MAPS=", t); | |||
| 1170 | ||||
| 1171 | p = procfs_file_alloca(pid, "limits")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "limits"); } else { _r_ = __builtin_alloca ( (sizeof("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof (pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("limits")); sprintf((char*) _r_, "/proc/""%" "i""/" "limits", _pid_); } _r_; }); | |||
| 1172 | if (read_full_file(p, &t, NULL((void*)0)) >= 0) | |||
| 1173 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_PROC_LIMITS=", t); | |||
| 1174 | ||||
| 1175 | p = procfs_file_alloca(pid, "cgroup")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "cgroup"); } else { _r_ = __builtin_alloca ( (sizeof("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof (pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof(pid_t ) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]))) + 1 + sizeof("cgroup")); sprintf((char*) _r_, "/proc/""%" "i""/" "cgroup", _pid_); } _r_; }); | |||
| 1176 | if (read_full_file(p, &t, NULL((void*)0)) >=0) | |||
| 1177 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_PROC_CGROUP=", t); | |||
| 1178 | ||||
| 1179 | p = procfs_file_alloca(pid, "mountinfo")({ pid_t _pid_ = (pid); const char *_r_; if (_pid_ == 0) { _r_ = ("/proc/self/" "mountinfo"); } else { _r_ = __builtin_alloca ((sizeof("""/proc/""") - 1) + (2+(sizeof(pid_t) <= 1 ? 3 : sizeof(pid_t) <= 2 ? 5 : sizeof(pid_t) <= 4 ? 10 : sizeof (pid_t) <= 8 ? 20 : sizeof(int[-2*(sizeof(pid_t) > 8)]) )) + 1 + sizeof("mountinfo")); sprintf((char*) _r_, "/proc/""%" "i""/" "mountinfo", _pid_); } _r_; }); | |||
| 1180 | if (read_full_file(p, &t, NULL((void*)0)) >=0) | |||
| 1181 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_PROC_MOUNTINFO=", t); | |||
| 1182 | ||||
| 1183 | if (get_process_cwd(pid, &t) >= 0) | |||
| 1184 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_CWD=", t); | |||
| 1185 | ||||
| 1186 | if (get_process_root(pid, &t) >= 0) { | |||
| 1187 | bool_Bool proc_self_root_is_slash; | |||
| 1188 | ||||
| 1189 | proc_self_root_is_slash = strcmp(t, "/") == 0; | |||
| 1190 | ||||
| 1191 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_ROOT=", t); | |||
| 1192 | ||||
| 1193 | /* If the process' root is "/", then there is a chance it has | |||
| 1194 | * mounted own root and hence being containerized. */ | |||
| 1195 | if (proc_self_root_is_slash
| |||
| 1196 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_CONTAINER_CMDLINE=", t); | |||
| 1197 | } | |||
| 1198 | ||||
| 1199 | if (get_process_environ(pid, &t) >= 0) | |||
| 1200 | set_iovec_field_free(iovec, n_iovec, "COREDUMP_ENVIRON=", t); | |||
| 1201 | ||||
| 1202 | t = strjoin("COREDUMP_TIMESTAMP=", context[CONTEXT_TIMESTAMP], "000000")strjoin_real(("COREDUMP_TIMESTAMP="), context[CONTEXT_TIMESTAMP ], "000000", ((void*)0)); | |||
| 1203 | if (t) | |||
| 1204 | iovec[(*n_iovec)++] = IOVEC_MAKE_STRING(t)(struct iovec) { .iov_base = ((char*) t), .iov_len = (strlen( t)) }; | |||
| 1205 | ||||
| 1206 | if (safe_atoi(context[CONTEXT_SIGNAL], &signo) >= 0 && SIGNAL_VALID(signo)) | |||
| 1207 | set_iovec_string_field(iovec, n_iovec, "COREDUMP_SIGNAL_NAME=SIG", signal_to_string(signo)); | |||
| 1208 | ||||
| 1209 | return 0; /* we successfully acquired all metadata */ | |||
| 1210 | } | |||
| 1211 | ||||
| 1212 | static int process_kernel(int argc, char* argv[]) { | |||
| 1213 | ||||
| 1214 | char* context[_CONTEXT_MAX] = {}; | |||
| 1215 | struct iovec iovec[29 + SUBMIT_COREDUMP_FIELDS4]; | |||
| 1216 | size_t i, n_iovec, n_to_free = 0; | |||
| 1217 | int r; | |||
| 1218 | ||||
| 1219 | log_debug("Processing coredump received from the kernel...")({ 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/coredump/coredump.c", 1219, __func__, "Processing coredump received from the kernel..." ) : -abs(_e); }); | |||
| 1220 | ||||
| 1221 | if (argc < CONTEXT_COMM + 1) { | |||
| 1222 | log_error("Not enough arguments passed by the kernel (%i, expected %i).", argc - 1, CONTEXT_COMM + 1 - 1)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1222, __func__, "Not enough arguments passed by the kernel (%i, expected %i)." , argc - 1, CONTEXT_COMM + 1 - 1) : -abs(_e); }); | |||
| 1223 | return -EINVAL22; | |||
| 1224 | } | |||
| 1225 | ||||
| 1226 | context[CONTEXT_PID] = argv[1 + CONTEXT_PID]; | |||
| 1227 | context[CONTEXT_UID] = argv[1 + CONTEXT_UID]; | |||
| 1228 | context[CONTEXT_GID] = argv[1 + CONTEXT_GID]; | |||
| 1229 | context[CONTEXT_SIGNAL] = argv[1 + CONTEXT_SIGNAL]; | |||
| 1230 | context[CONTEXT_TIMESTAMP] = argv[1 + CONTEXT_TIMESTAMP]; | |||
| 1231 | context[CONTEXT_RLIMIT] = argv[1 + CONTEXT_RLIMIT]; | |||
| 1232 | context[CONTEXT_HOSTNAME] = argv[1 + CONTEXT_HOSTNAME]; | |||
| 1233 | ||||
| 1234 | r = gather_pid_metadata(context, argv + 1 + CONTEXT_COMM, iovec, &n_to_free); | |||
| 1235 | if (r < 0) | |||
| 1236 | goto finish; | |||
| 1237 | ||||
| 1238 | n_iovec = n_to_free; | |||
| 1239 | ||||
| 1240 | iovec[n_iovec++] = IOVEC_MAKE_STRING("MESSAGE_ID=" SD_MESSAGE_COREDUMP_STR)(struct iovec) { .iov_base = ((char*) "MESSAGE_ID=" "fc" "2e" "22" "bc" "6e" "e6" "47" "b6" "b9" "07" "29" "ab" "34" "a2" "50" "b1"), .iov_len = (strlen("MESSAGE_ID=" "fc" "2e" "22" "bc" "6e" "e6" "47" "b6" "b9" "07" "29" "ab" "34" "a2" "50" "b1")) }; | |||
| 1241 | ||||
| 1242 | assert_cc(2 == LOG_CRIT)GCC diagnostic push
; GCC diagnostic ignored "-Wdeclaration-after-statement" ; struct _assert_struct_30 { char x[(2 == 2) ? 0 : -1]; }; GCC diagnostic pop ; | |||
| 1243 | iovec[n_iovec++] = IOVEC_MAKE_STRING("PRIORITY=2")(struct iovec) { .iov_base = ((char*) "PRIORITY=2"), .iov_len = (strlen("PRIORITY=2")) }; | |||
| 1244 | ||||
| 1245 | assert(n_iovec <= ELEMENTSOF(iovec))do { if ((__builtin_expect(!!(!(n_iovec <= __extension__ ( __builtin_choose_expr( !__builtin_types_compatible_p(typeof(iovec ), typeof(&*(iovec))), sizeof(iovec)/sizeof((iovec)[0]), ( (void)0))))),0))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ( "n_iovec <= ELEMENTSOF(iovec)"), "../src/coredump/coredump.c" , 1245, __PRETTY_FUNCTION__); } while (0); | |||
| 1246 | ||||
| 1247 | if (is_journald_crash((const char**) context) || is_pid1_crash((const char**) context)) | |||
| 1248 | r = submit_coredump((const char**) context, | |||
| 1249 | iovec, ELEMENTSOF(iovec)__extension__ (__builtin_choose_expr( !__builtin_types_compatible_p (typeof(iovec), typeof(&*(iovec))), sizeof(iovec)/sizeof( (iovec)[0]), ((void)0))), n_iovec, | |||
| 1250 | STDIN_FILENO0); | |||
| 1251 | else | |||
| 1252 | r = send_iovec(iovec, n_iovec, STDIN_FILENO0); | |||
| 1253 | ||||
| 1254 | finish: | |||
| 1255 | for (i = 0; i < n_to_free; i++) | |||
| 1256 | free(iovec[i].iov_base); | |||
| 1257 | ||||
| 1258 | /* Those fields are allocated by gather_pid_metadata */ | |||
| 1259 | free(context[CONTEXT_COMM]); | |||
| 1260 | free(context[CONTEXT_EXE]); | |||
| 1261 | free(context[CONTEXT_UNIT]); | |||
| 1262 | ||||
| 1263 | return r; | |||
| 1264 | } | |||
| 1265 | ||||
| 1266 | static int process_backtrace(int argc, char *argv[]) { | |||
| 1267 | char *context[_CONTEXT_MAX] = {}; | |||
| 1268 | _cleanup_free___attribute__((cleanup(freep))) char *message = NULL((void*)0); | |||
| 1269 | _cleanup_free___attribute__((cleanup(freep))) struct iovec *iovec = NULL((void*)0); | |||
| 1270 | size_t n_iovec, n_allocated, n_to_free = 0, i; | |||
| 1271 | int r; | |||
| 1272 | JournalImporter importer = { | |||
| 1273 | .fd = STDIN_FILENO0, | |||
| 1274 | }; | |||
| 1275 | ||||
| 1276 | log_debug("Processing backtrace on stdin...")({ 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/coredump/coredump.c", 1276, __func__, "Processing backtrace on stdin..." ) : -abs(_e); }); | |||
| 1277 | ||||
| 1278 | if (argc < CONTEXT_COMM + 1) { | |||
| 1279 | log_error("Not enough arguments passed (%i, expected %i).", argc - 1, CONTEXT_COMM + 1 - 1)({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1279, __func__, "Not enough arguments passed (%i, expected %i)." , argc - 1, CONTEXT_COMM + 1 - 1) : -abs(_e); }); | |||
| 1280 | return -EINVAL22; | |||
| 1281 | } | |||
| 1282 | ||||
| 1283 | context[CONTEXT_PID] = argv[2 + CONTEXT_PID]; | |||
| 1284 | context[CONTEXT_UID] = argv[2 + CONTEXT_UID]; | |||
| 1285 | context[CONTEXT_GID] = argv[2 + CONTEXT_GID]; | |||
| 1286 | context[CONTEXT_SIGNAL] = argv[2 + CONTEXT_SIGNAL]; | |||
| 1287 | context[CONTEXT_TIMESTAMP] = argv[2 + CONTEXT_TIMESTAMP]; | |||
| 1288 | context[CONTEXT_RLIMIT] = argv[2 + CONTEXT_RLIMIT]; | |||
| 1289 | context[CONTEXT_HOSTNAME] = argv[2 + CONTEXT_HOSTNAME]; | |||
| 1290 | ||||
| 1291 | n_allocated = 34 + COREDUMP_STORAGE_EXTERNAL; | |||
| 1292 | /* 26 metadata, 2 static, +unknown input, 4 storage, rounded up */ | |||
| 1293 | iovec = new(struct iovec, n_allocated)((struct iovec*) malloc_multiply(sizeof(struct iovec), (n_allocated ))); | |||
| 1294 | if (!iovec) | |||
| 1295 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1295, __func__); | |||
| 1296 | ||||
| 1297 | r = gather_pid_metadata(context, argv + 2 + CONTEXT_COMM, iovec, &n_to_free); | |||
| 1298 | if (r < 0) | |||
| 1299 | goto finish; | |||
| 1300 | if (r > 0) { | |||
| 1301 | /* This was a special crash, and has already been processed. */ | |||
| 1302 | r = 0; | |||
| 1303 | goto finish; | |||
| 1304 | } | |||
| 1305 | n_iovec = n_to_free; | |||
| 1306 | ||||
| 1307 | for (;;) { | |||
| 1308 | r = journal_importer_process_data(&importer); | |||
| 1309 | if (r < 0) { | |||
| 1310 | log_error_errno(r, "Failed to parse journal entry on stdin: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1310, __func__, "Failed to parse journal entry on stdin: %m" ) : -abs(_e); }); | |||
| 1311 | goto finish; | |||
| 1312 | } | |||
| 1313 | if (r == 1 || /* complete entry */ | |||
| 1314 | journal_importer_eof(&importer)) /* end of data */ | |||
| 1315 | break; | |||
| 1316 | } | |||
| 1317 | ||||
| 1318 | if (!GREEDY_REALLOC(iovec, n_allocated, n_iovec + importer.iovw.count + 2)greedy_realloc((void**) &(iovec), &(n_allocated), (n_iovec + importer.iovw.count + 2), sizeof((iovec)[0]))) | |||
| 1319 | return log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1319, __func__); | |||
| 1320 | ||||
| 1321 | if (journal_importer_eof(&importer)) { | |||
| 1322 | log_warning("Did not receive a full journal entry on stdin, ignoring message sent by reporter")({ int _level = (((4))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1322, __func__, "Did not receive a full journal entry on stdin, ignoring message sent by reporter" ) : -abs(_e); }); | |||
| 1323 | ||||
| 1324 | message = strjoin("MESSAGE=Process ", context[CONTEXT_PID],strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ")" " of user ", context[CONTEXT_UID ], " failed with ", context[CONTEXT_SIGNAL], ((void*)0)) | |||
| 1325 | " (", context[CONTEXT_COMM], ")"strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ")" " of user ", context[CONTEXT_UID ], " failed with ", context[CONTEXT_SIGNAL], ((void*)0)) | |||
| 1326 | " of user ", context[CONTEXT_UID],strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ")" " of user ", context[CONTEXT_UID ], " failed with ", context[CONTEXT_SIGNAL], ((void*)0)) | |||
| 1327 | " failed with ", context[CONTEXT_SIGNAL])strjoin_real(("MESSAGE=Process "), context[CONTEXT_PID], " (" , context[CONTEXT_COMM], ")" " of user ", context[CONTEXT_UID ], " failed with ", context[CONTEXT_SIGNAL], ((void*)0)); | |||
| 1328 | if (!message) { | |||
| 1329 | r = log_oom()log_oom_internal(LOG_REALM_SYSTEMD, "../src/coredump/coredump.c" , 1329, __func__); | |||
| 1330 | goto finish; | |||
| 1331 | } | |||
| 1332 | iovec[n_iovec++] = IOVEC_MAKE_STRING(message)(struct iovec) { .iov_base = ((char*) message), .iov_len = (strlen (message)) }; | |||
| 1333 | } else { | |||
| 1334 | for (i = 0; i < importer.iovw.count; i++) | |||
| 1335 | iovec[n_iovec++] = importer.iovw.iovec[i]; | |||
| 1336 | } | |||
| 1337 | ||||
| 1338 | iovec[n_iovec++] = IOVEC_MAKE_STRING("MESSAGE_ID=" SD_MESSAGE_BACKTRACE_STR)(struct iovec) { .iov_base = ((char*) "MESSAGE_ID=" "1f" "4e" "0a" "44" "a8" "86" "49" "93" "9a" "ae" "a3" "4f" "c6" "da" "8c" "95"), .iov_len = (strlen("MESSAGE_ID=" "1f" "4e" "0a" "44" "a8" "86" "49" "93" "9a" "ae" "a3" "4f" "c6" "da" "8c" "95")) }; | |||
| 1339 | assert_cc(2 == LOG_CRIT)GCC diagnostic push
; GCC diagnostic ignored "-Wdeclaration-after-statement" ; struct _assert_struct_31 { char x[(2 == 2) ? 0 : -1]; }; GCC diagnostic pop ; | |||
| 1340 | iovec[n_iovec++] = IOVEC_MAKE_STRING("PRIORITY=2")(struct iovec) { .iov_base = ((char*) "PRIORITY=2"), .iov_len = (strlen("PRIORITY=2")) }; | |||
| 1341 | ||||
| 1342 | assert(n_iovec <= n_allocated)do { if ((__builtin_expect(!!(!(n_iovec <= n_allocated)),0 ))) log_assert_failed_realm(LOG_REALM_SYSTEMD, ("n_iovec <= n_allocated" ), "../src/coredump/coredump.c", 1342, __PRETTY_FUNCTION__); } while (0); | |||
| 1343 | ||||
| 1344 | r = sd_journal_sendv(iovec, n_iovec)sd_journal_sendv_with_location("CODE_FILE=" "../src/coredump/coredump.c" , "CODE_LINE=" "1344", __func__, iovec, n_iovec); | |||
| 1345 | if (r < 0) | |||
| 1346 | log_error_errno(r, "Failed to log backtrace: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1346, __func__, "Failed to log backtrace: %m" ) : -abs(_e); }); | |||
| 1347 | ||||
| 1348 | finish: | |||
| 1349 | for (i = 0; i < n_to_free; i++) | |||
| 1350 | free(iovec[i].iov_base); | |||
| 1351 | ||||
| 1352 | /* Those fields are allocated by gather_pid_metadata */ | |||
| 1353 | free(context[CONTEXT_COMM]); | |||
| 1354 | free(context[CONTEXT_EXE]); | |||
| 1355 | free(context[CONTEXT_UNIT]); | |||
| 1356 | ||||
| 1357 | return r; | |||
| 1358 | } | |||
| 1359 | ||||
| 1360 | int main(int argc, char *argv[]) { | |||
| 1361 | int r; | |||
| 1362 | ||||
| 1363 | /* First, log to a safe place, since we don't know what crashed and it might | |||
| 1364 | * be journald which we'd rather not log to then. */ | |||
| 1365 | ||||
| 1366 | log_set_target(LOG_TARGET_KMSG); | |||
| 1367 | log_open(); | |||
| 1368 | ||||
| 1369 | /* Make sure we never enter a loop */ | |||
| 1370 | (void) prctl(PR_SET_DUMPABLE4, 0); | |||
| 1371 | ||||
| 1372 | /* Ignore all parse errors */ | |||
| 1373 | (void) parse_config(); | |||
| 1374 | ||||
| 1375 | log_debug("Selected storage '%s'.", coredump_storage_to_string(arg_storage))({ 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/coredump/coredump.c", 1375, __func__, "Selected storage '%s'." , coredump_storage_to_string(arg_storage)) : -abs(_e); }); | |||
| 1376 | log_debug("Selected compression %s.", yes_no(arg_compress))({ 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/coredump/coredump.c", 1376, __func__, "Selected compression %s." , yes_no(arg_compress)) : -abs(_e); }); | |||
| 1377 | ||||
| 1378 | r = sd_listen_fds(false0); | |||
| 1379 | if (r < 0) { | |||
| 1380 | log_error_errno(r, "Failed to determine number of file descriptor: %m")({ int _level = ((3)), _e = ((r)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1380, __func__, "Failed to determine number of file descriptor: %m" ) : -abs(_e); }); | |||
| 1381 | goto finish; | |||
| 1382 | } | |||
| 1383 | ||||
| 1384 | /* If we got an fd passed, we are running in coredumpd mode. Otherwise we | |||
| 1385 | * are invoked from the kernel as coredump handler. */ | |||
| 1386 | if (r == 0) { | |||
| 1387 | if (streq_ptr(argv[1], "--backtrace")) | |||
| 1388 | r = process_backtrace(argc, argv); | |||
| 1389 | else | |||
| 1390 | r = process_kernel(argc, argv); | |||
| 1391 | } else if (r == 1) | |||
| 1392 | r = process_socket(SD_LISTEN_FDS_START3); | |||
| 1393 | else { | |||
| 1394 | log_error("Received unexpected number of file descriptors.")({ int _level = (((3))), _e = ((0)), _realm = (LOG_REALM_SYSTEMD ); (log_get_max_level_realm(_realm) >= ((_level) & 0x07 )) ? log_internal_realm(((_realm) << 10 | (_level)), _e , "../src/coredump/coredump.c", 1394, __func__, "Received unexpected number of file descriptors." ) : -abs(_e); }); | |||
| 1395 | r = -EINVAL22; | |||
| 1396 | } | |||
| 1397 | ||||
| 1398 | finish: | |||
| 1399 | return r < 0 ? EXIT_FAILURE1 : EXIT_SUCCESS0; | |||
| 1400 | } |