#include "pager.h"
#include "macro.h"
#include "journal-internal.h"
+#include "copy.h"
static enum {
ACTION_NONE,
+ ACTION_INFO,
ACTION_LIST,
ACTION_DUMP,
ACTION_GDB,
} arg_action = ACTION_LIST;
-
-static FILE* output = NULL;
-static char* field = NULL;
-
+static const char* arg_field = NULL;
static int arg_no_pager = false;
static int arg_no_legend = false;
+static int arg_one = false;
+
+static FILE* output = NULL;
static Set *new_matches(void) {
Set *set;
}
static int help(void) {
- printf("%s [OPTIONS...] [MATCHES...]\n\n"
+
+ printf("%s [OPTIONS...]\n\n"
"List or retrieve coredumps from the journal.\n\n"
"Flags:\n"
- " -o --output=FILE Write output to FILE\n"
- " --no-pager Do not pipe output into a pager\n"
- " --no-legend Do not print the column headers.\n\n"
+ " -o --output=FILE Write output to FILE\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --no-legend Do not print the column headers.\n\n"
"Commands:\n"
- " -h --help Show this help\n"
- " --version Print version string\n"
- " -F --field=FIELD List all values a certain field takes\n"
- " gdb Start gdb for the first matching coredump\n"
- " list List available coredumps\n"
- " dump PID Print coredump to stdout\n"
- " dump PATH Print coredump to stdout\n"
+ " -h --help Show this help\n"
+ " --version Print version string\n"
+ " -F --field=FIELD List all values a certain field takes\n"
+ " list [MATCHES...] List available coredumps\n"
+ " info [MATCHES...] Show detailed information about one or more coredumps\n"
+ " dump [MATCHES...] Print first matching coredump to stdout\n"
+ " gdb [MATCHES...] Start gdb for the first matching coredump\n"
, program_invocation_short_name);
return 0;
assert(argc >= 0);
assert(argv);
- while ((c = getopt_long(argc, argv, "ho:F:", options, NULL)) >= 0)
+ while ((c = getopt_long(argc, argv, "ho:F:1", options, NULL)) >= 0)
switch(c) {
case 'h':
break;
case 'F':
- if (field) {
+ if (arg_field) {
log_error("cannot use --field/-F more than once");
return -EINVAL;
}
+ arg_field = optarg;
+ break;
- field = optarg;
+ case '1':
+ arg_one = true;
break;
case '?':
arg_action = ACTION_DUMP;
else if (streq(cmd, "gdb"))
arg_action = ACTION_GDB;
+ else if (streq(cmd, "info"))
+ arg_action = ACTION_INFO;
else {
log_error("Unknown action '%s'", cmd);
return -EINVAL;
}
}
- if (field && arg_action != ACTION_LIST) {
+ if (arg_field && arg_action != ACTION_LIST) {
log_error("Option --field/-F only makes sense with list");
return -EINVAL;
}
static int retrieve(const void *data,
size_t len,
const char *name,
- const char **var) {
+ char **var) {
size_t ident;
+ char *v;
ident = strlen(name) + 1; /* name + "=" */
if (((const char*) data)[ident - 1] != '=')
return 0;
- *var = strndup((const char*)data + ident, len - ident);
- if (!*var)
+ v = strndup((const char*)data + ident, len - ident);
+ if (!v)
+ return log_oom();
+
+ free(*var);
+ *var = v;
+
+ return 0;
+}
+
+#define filename_escape(s) xescape((s), "./")
+
+static int make_coredump_path(sd_journal *j, char **ret) {
+ _cleanup_free_ char
+ *pid = NULL, *boot_id = NULL, *tstamp = NULL, *comm = NULL,
+ *p = NULL, *b = NULL, *t = NULL, *c = NULL;
+ const void *d;
+ size_t l;
+ char *fn;
+
+ assert(j);
+ assert(ret);
+
+ SD_JOURNAL_FOREACH_DATA(j, d, l) {
+ retrieve(d, l, "COREDUMP_COMM", &comm);
+ retrieve(d, l, "COREDUMP_PID", &pid);
+ retrieve(d, l, "COREDUMP_TIMESTAMP", &tstamp);
+ retrieve(d, l, "_BOOT_ID", &boot_id);
+ }
+
+ if (!pid || !comm || !tstamp || !boot_id) {
+ log_error("Failed to retrieve necessary fields to find coredump on disk.");
+ return -ENOENT;
+ }
+
+ p = filename_escape(pid);
+ if (!p)
+ return log_oom();
+
+ t = filename_escape(tstamp);
+ if (!t)
+ return log_oom();
+
+ c = filename_escape(comm);
+ if (!t)
+ return log_oom();
+
+ b = filename_escape(boot_id);
+ if (!b)
+ return log_oom();
+
+ fn = strjoin("/var/lib/systemd/coredump/core.", c, ".", b, ".", p, ".", t, NULL);
+ if (!fn)
return log_oom();
+ *ret = fn;
return 0;
}
static void print_field(FILE* file, sd_journal *j) {
- _cleanup_free_ const char *value = NULL;
+ _cleanup_free_ char *value = NULL;
const void *d;
size_t l;
- assert(field);
+ assert(file);
+ assert(j);
+
+ assert(arg_field);
SD_JOURNAL_FOREACH_DATA(j, d, l)
- retrieve(d, l, field, &value);
+ retrieve(d, l, arg_field, &value);
+
if (value)
fprintf(file, "%s\n", value);
}
-static int print_entry(FILE* file, sd_journal *j, int had_legend) {
- _cleanup_free_ const char
+static int print_list(FILE* file, sd_journal *j, int had_legend) {
+ _cleanup_free_ char
*pid = NULL, *uid = NULL, *gid = NULL,
- *sgnl = NULL, *exe = NULL;
+ *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL;
const void *d;
size_t l;
usec_t t;
char buf[FORMAT_TIMESTAMP_MAX];
int r;
+ assert(file);
+ assert(j);
+
SD_JOURNAL_FOREACH_DATA(j, d, l) {
- retrieve(d, l, "COREDUMP_PID", &pid);
retrieve(d, l, "COREDUMP_PID", &pid);
retrieve(d, l, "COREDUMP_UID", &uid);
retrieve(d, l, "COREDUMP_GID", &gid);
retrieve(d, l, "COREDUMP_SIGNAL", &sgnl);
retrieve(d, l, "COREDUMP_EXE", &exe);
- if (!exe)
- retrieve(d, l, "COREDUMP_COMM", &exe);
- if (!exe)
- retrieve(d, l, "COREDUMP_CMDLINE", &exe);
+ retrieve(d, l, "COREDUMP_COMM", &comm);
+ retrieve(d, l, "COREDUMP_CMDLINE", &cmdline);
}
- if (!pid && !uid && !gid && !sgnl && !exe) {
+ if (!pid && !uid && !gid && !sgnl && !exe && !comm && !cmdline) {
log_warning("Empty coredump log entry");
return -EINVAL;
}
if (!had_legend && !arg_no_legend)
fprintf(file, "%-*s %*s %*s %*s %*s %s\n",
- FORMAT_TIMESTAMP_MAX-1, "TIME",
+ FORMAT_TIMESTAMP_WIDTH, "TIME",
6, "PID",
5, "UID",
5, "GID",
3, "SIG",
"EXE");
- fprintf(file, "%*s %*s %*s %*s %*s %s\n",
- FORMAT_TIMESTAMP_MAX-1, buf,
- 6, pid,
- 5, uid,
- 5, gid,
- 3, sgnl,
- exe);
+ fprintf(file, "%-*s %*s %*s %*s %*s %s\n",
+ FORMAT_TIMESTAMP_WIDTH, buf,
+ 6, strna(pid),
+ 5, strna(uid),
+ 5, strna(gid),
+ 3, strna(sgnl),
+ strna(exe ?: (comm ?: cmdline)));
return 0;
}
-static int dump_list(sd_journal *j) {
- int found = 0;
+static int print_info(FILE *file, sd_journal *j, bool need_space) {
+ _cleanup_free_ char
+ *pid = NULL, *uid = NULL, *gid = NULL,
+ *sgnl = NULL, *exe = NULL, *comm = NULL, *cmdline = NULL,
+ *unit = NULL, *user_unit = NULL, *session = NULL,
+ *boot_id = NULL, *machine_id = NULL, *hostname = NULL,
+ *coredump = NULL, *slice = NULL, *cgroup = NULL,
+ *owner_uid = NULL, *message = NULL;
+ const void *d;
+ size_t l;
+ assert(file);
assert(j);
- /* The coredumps are likely to compressed, and for just
- * listing them we don't need to decompress them, so let's
- * pick a fairly low data threshold here */
- sd_journal_set_data_threshold(j, 4096);
+ SD_JOURNAL_FOREACH_DATA(j, d, l) {
+ retrieve(d, l, "COREDUMP_PID", &pid);
+ retrieve(d, l, "COREDUMP_UID", &uid);
+ retrieve(d, l, "COREDUMP_GID", &gid);
+ retrieve(d, l, "COREDUMP_SIGNAL", &sgnl);
+ retrieve(d, l, "COREDUMP_EXE", &exe);
+ retrieve(d, l, "COREDUMP_COMM", &comm);
+ retrieve(d, l, "COREDUMP_CMDLINE", &cmdline);
+ retrieve(d, l, "COREDUMP_UNIT", &unit);
+ retrieve(d, l, "COREDUMP_USER_UNIT", &user_unit);
+ retrieve(d, l, "COREDUMP_SESSION", &session);
+ retrieve(d, l, "COREDUMP_OWNER_UID", &owner_uid);
+ retrieve(d, l, "COREDUMP_SLICE", &slice);
+ retrieve(d, l, "COREDUMP_CGROUP", &cgroup);
+ retrieve(d, l, "_BOOT_ID", &boot_id);
+ retrieve(d, l, "_MACHINE_ID", &machine_id);
+ retrieve(d, l, "_HOSTNAME", &hostname);
+ retrieve(d, l, "MESSAGE", &message);
+ }
+
+ if (need_space)
+ fputs("\n", file);
+
+ fprintf(file,
+ " PID: %s%s%s\n",
+ ansi_highlight(), strna(pid), ansi_highlight_off());
+
+ if (uid) {
+ uid_t n;
+
+ if (parse_uid(uid, &n) >= 0) {
+ _cleanup_free_ char *u = NULL;
+
+ u = uid_to_name(n);
+ fprintf(file,
+ " UID: %s (%s)\n",
+ uid, u);
+ } else {
+ fprintf(file,
+ " UID: %s\n",
+ uid);
+ }
+ }
+
+ if (gid) {
+ gid_t n;
+
+ if (parse_gid(gid, &n) >= 0) {
+ _cleanup_free_ char *g = NULL;
- SD_JOURNAL_FOREACH(j) {
- if (field)
- print_field(stdout, j);
+ g = gid_to_name(n);
+ fprintf(file,
+ " GID: %s (%s)\n",
+ gid, g);
+ } else {
+ fprintf(file,
+ " GID: %s\n",
+ gid);
+ }
+ }
+
+ if (sgnl) {
+ int sig;
+
+ if (safe_atoi(sgnl, &sig) >= 0)
+ fprintf(file, " Signal: %s (%s)\n", sgnl, signal_to_string(sig));
else
- print_entry(stdout, j, found++);
+ fprintf(file, " Signal: %s\n", sgnl);
+ }
+
+ if (exe)
+ fprintf(file, " Executable: %s%s%s\n", ansi_highlight(), exe, ansi_highlight_off());
+ if (comm)
+ fprintf(file, " Comm: %s\n", comm);
+ if (cmdline)
+ fprintf(file, " Command Line: %s\n", cmdline);
+ if (cgroup)
+ fprintf(file, " Control Group: %s\n", cgroup);
+ if (unit)
+ fprintf(file, " Unit: %s\n", unit);
+ if (user_unit)
+ fprintf(file, " User Unit: %s\n", unit);
+ if (slice)
+ fprintf(file, " Slice: %s\n", slice);
+ if (session)
+ fprintf(file, " Session: %s\n", session);
+ if (owner_uid) {
+ uid_t n;
+
+ if (parse_uid(owner_uid, &n) >= 0) {
+ _cleanup_free_ char *u = NULL;
+
+ u = uid_to_name(n);
+ fprintf(file,
+ " Owner UID: %s (%s)\n",
+ owner_uid, u);
+ } else {
+ fprintf(file,
+ " Owner UID: %s\n",
+ owner_uid);
+ }
}
+ if (boot_id)
+ fprintf(file, " Boot ID: %s\n", boot_id);
+ if (machine_id)
+ fprintf(file, " Machine ID: %s\n", machine_id);
+ if (hostname)
+ fprintf(file, " Hostname: %s\n", hostname);
- if (!field && !found) {
- log_notice("No coredumps found");
- return -ESRCH;
+ if (make_coredump_path(j, &coredump) >= 0)
+ if (access(coredump, F_OK) >= 0)
+ fprintf(file, " Coredump: %s\n", coredump);
+
+ if (message) {
+ _cleanup_free_ char *m = NULL;
+
+ m = strreplace(message, "\n", "\n ");
+
+ fprintf(file, " Message: %s\n", strstrip(m ?: message));
}
return 0;
return r;
}
if (r == 0) {
- log_error("No match found");
+ log_error("No match found.");
return -ESRCH;
}
return r;
}
+static void print_entry(sd_journal *j, unsigned n_found) {
+ assert(j);
+
+ if (arg_action == ACTION_INFO)
+ print_info(stdout, j, n_found);
+ else if (arg_field)
+ print_field(stdout, j);
+ else
+ print_list(stdout, j, n_found);
+}
+
+static int dump_list(sd_journal *j) {
+ unsigned n_found = 0;
+ int r;
+
+ assert(j);
+
+ /* The coredumps are likely to compressed, and for just
+ * listing them we don't need to decompress them, so let's
+ * pick a fairly low data threshold here */
+ sd_journal_set_data_threshold(j, 4096);
+
+ if (arg_one) {
+ r = focus(j);
+ if (r < 0)
+ return r;
+
+ print_entry(j, 0);
+ } else {
+ SD_JOURNAL_FOREACH(j)
+ print_entry(j, n_found++);
+
+ if (!arg_field && n_found <= 0) {
+ log_notice("No coredumps found.");
+ return -ESRCH;
+ }
+ }
+
+ return 0;
+}
+
static int dump_core(sd_journal* j) {
const void *data;
size_t len, ret;
if (r < 0)
return r;
- print_entry(output ? stdout : stderr, j, false);
+ print_info(output ? stdout : stderr, j, false);
if (on_tty() && !output) {
- log_error("Refusing to dump core to tty");
+ log_error("Refusing to dump core to tty.");
return -ENOTTY;
}
r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
- if (r < 0) {
+ if (r == ENOENT) {
+ _cleanup_free_ char *fn = NULL;
+ _cleanup_close_ int fd = -1;
+
+ r = make_coredump_path(j, &fn);
+ if (r < 0)
+ return r;
+
+ fd = open(fn, O_RDONLY|O_CLOEXEC|O_NOCTTY);
+ if (fd < 0) {
+ if (errno == ENOENT)
+ log_error("Coredump neither in journal file nor stored externally on disk.");
+ else
+ log_error("Failed to open coredump file: %s", strerror(-r));
+
+ return -errno;
+ }
+
+ r = copy_bytes(fd, output ? fileno(output) : STDOUT_FILENO);
+ if (r < 0) {
+ log_error("Failed to stream coredump: %s", strerror(-r));
+ return r;
+ }
+
+ } else if (r < 0) {
log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
return r;
- }
- assert(len >= 9);
- data = (const uint8_t*) data + 9;
- len -= 9;
+ } else {
+ assert(len >= 9);
+ data = (const uint8_t*) data + 9;
+ len -= 9;
- ret = fwrite(data, len, 1, output ? output : stdout);
- if (ret != 1) {
- log_error("dumping coredump: %m (%zu)", ret);
- return -errno;
+ ret = fwrite(data, len, 1, output ?: stdout);
+ if (ret != 1) {
+ log_error("Dumping coredump failed: %m (%zu)", ret);
+ return -errno;
+ }
}
r = sd_journal_previous(j);
}
static int run_gdb(sd_journal *j) {
- char path[] = "/var/tmp/coredump-XXXXXX";
+
+ _cleanup_free_ char *exe = NULL, *coredump = NULL;
+ char temp[] = "/var/tmp/coredump-XXXXXX";
+ bool unlink_temp = false;
+ const char *path;
const void *data;
+ siginfo_t st;
size_t len;
- ssize_t sz;
pid_t pid;
- _cleanup_free_ char *exe = NULL;
int r;
- _cleanup_close_ int fd = -1;
- siginfo_t st;
assert(j);
if (r < 0)
return r;
- print_entry(stdout, j, false);
+ print_info(stdout, j, false);
+ fputs("\n", stdout);
r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len);
if (r < 0) {
return -ENOENT;
}
+ if (!path_is_absolute(exe)) {
+ log_error("Binary is not an absolute path.");
+ return -ENOENT;
+ }
+
r = sd_journal_get_data(j, "COREDUMP", (const void**) &data, &len);
- if (r < 0) {
+ if (r == -ENOENT) {
+
+ r = make_coredump_path(j, &coredump);
+ if (r < 0)
+ return r;
+
+ if (access(coredump, R_OK) < 0) {
+ if (errno == ENOENT)
+ log_error("Coredump neither in journal file nor stored externally on disk.");
+ else
+ log_error("Failed to access coredump file: %m");
+
+ return -errno;
+ }
+
+ path = coredump;
+
+ } else if (r < 0) {
log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
return r;
- }
- assert(len >= 9);
- data = (const uint8_t*) data + 9;
- len -= 9;
+ } else {
+ _cleanup_close_ int fd = -1;
+ ssize_t sz;
- fd = mkostemp_safe(path, O_WRONLY|O_CLOEXEC);
- if (fd < 0) {
- log_error("Failed to create temporary file: %m");
- return -errno;
- }
+ assert(len >= 9);
+ data = (const uint8_t*) data + 9;
+ len -= 9;
- sz = write(fd, data, len);
- if (sz < 0) {
- log_error("Failed to write temporary file: %m");
- r = -errno;
- goto finish;
- }
- if (sz != (ssize_t) len) {
- log_error("Short write to temporary file.");
- r = -EIO;
- goto finish;
- }
+ fd = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC);
+ if (fd < 0) {
+ log_error("Failed to create temporary file: %m");
+ return -errno;
+ }
+
+ unlink_temp = true;
+
+ sz = write(fd, data, len);
+ if (sz < 0) {
+ log_error("Failed to write temporary file: %m");
+ r = -errno;
+ goto finish;
+ }
+ if (sz != (ssize_t) len) {
+ log_error("Short write to temporary file.");
+ r = -EIO;
+ goto finish;
+ }
- fd = safe_close(fd);
+ path = temp;
+ }
pid = fork();
if (pid < 0) {
}
if (pid == 0) {
execlp("gdb", "gdb", exe, path, NULL);
+
log_error("Failed to invoke gdb: %m");
_exit(1);
}
r = st.si_code == CLD_EXITED ? st.si_status : 255;
finish:
- unlink(path);
+ if (unlink_temp)
+ unlink(temp);
+
return r;
}
switch(arg_action) {
case ACTION_LIST:
+ case ACTION_INFO:
if (!arg_no_pager)
pager_open(false);
~ianmdlvl / elogind.git / blobdiff