#include <fcntl.h>
#include <unistd.h>
-#include "systemd/sd-journal.h"
-
+#include "sd-journal.h"
#include "build.h"
#include "set.h"
#include "util.h"
#include "journal-internal.h"
#include "copy.h"
#include "compress.h"
+#include "sigbus.h"
static enum {
ACTION_NONE,
static int arg_no_pager = false;
static int arg_no_legend = false;
static int arg_one = false;
-
-static FILE* output = NULL;
+static FILE* arg_output = NULL;
static Set *new_matches(void) {
Set *set;
char *tmp;
int r;
- set = set_new(trivial_hash_func, trivial_compare_func);
+ set = set_new(NULL);
if (!set) {
log_oom();
return NULL;
r = set_consume(set, tmp);
if (r < 0) {
- log_error("failed to add to set: %s", strerror(-r));
+ log_error_errno(r, "failed to add to set: %m");
set_free(set);
return NULL;
}
return set;
}
-static int help(void) {
-
- printf("%s [OPTIONS...]\n\n"
- "List or retrieve coredumps from the journal.\n\n"
- "Flags:\n"
- " -h --help Show this help\n"
- " --version Print version string\n"
- " --no-pager Do not pipe output into a pager\n"
- " --no-legend Do not print the column headers.\n"
- " -1 Show information about most recent entry only\n"
- " -F --field=FIELD List all values a certain field takes\n"
- " -o --output=FILE Write output to FILE\n\n"
-
- "Commands:\n"
- " list [MATCHES...] List available coredumps (default)\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;
-}
-
static int add_match(Set *set, const char *match) {
int r = -ENOMEM;
unsigned pid;
log_debug("Adding pattern: %s", pattern);
r = set_consume(set, pattern);
if (r < 0) {
- log_error("Failed to add pattern '%s': %s",
- pattern, strerror(-r));
+ log_error_errno(r, "Failed to add pattern: %m");
goto fail;
}
return 0;
fail:
- log_error("Failed to add match: %s", strerror(-r));
- return r;
+ return log_error_errno(r, "Failed to add match: %m");
+}
+
+static void help(void) {
+ printf("%s [OPTIONS...]\n\n"
+ "List or retrieve coredumps from the journal.\n\n"
+ "Flags:\n"
+ " -h --help Show this help\n"
+ " --version Print version string\n"
+ " --no-pager Do not pipe output into a pager\n"
+ " --no-legend Do not print the column headers.\n"
+ " -1 Show information about most recent entry only\n"
+ " -F --field=FIELD List all values a certain field takes\n"
+ " -o --output=FILE Write output to FILE\n\n"
+
+ "Commands:\n"
+ " list [MATCHES...] List available coredumps (default)\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);
}
static int parse_argv(int argc, char *argv[], Set *matches) {
case 'h':
arg_action = ACTION_NONE;
- return help();
+ help();
+ return 0;
case ARG_VERSION:
arg_action = ACTION_NONE;
break;
case 'o':
- if (output) {
+ if (arg_output) {
log_error("cannot set output more than once");
return -EINVAL;
}
- output = fopen(optarg, "we");
- if (!output) {
- log_error("writing to '%s': %m", optarg);
- return -errno;
- }
+ arg_output = fopen(optarg, "we");
+ if (!arg_output)
+ return log_error_errno(errno, "writing to '%s': %m", optarg);
break;
}
r = sd_journal_get_realtime_usec(j, &t);
- if (r < 0) {
- log_error("Failed to get realtime timestamp: %s", strerror(-r));
- return r;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to get realtime timestamp: %m");
format_timestamp(buf, sizeof(buf), t);
present = filename && access(filename, F_OK) == 0;
r = sd_journal_seek_tail(j);
if (r == 0)
r = sd_journal_previous(j);
- if (r < 0) {
- log_error("Failed to search journal: %s", strerror(-r));
- return r;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to search journal: %m");
if (r == 0) {
log_error("No match found.");
return -ESRCH;
* compressed file (probably uncached). */
r = sd_journal_get_data(j, "COREDUMP_FILENAME", (const void**) &data, &len);
if (r < 0 && r != -ENOENT)
- log_warning("Failed to retrieve COREDUMP_FILENAME: %s", strerror(-r));
+ log_warning_errno(r, "Failed to retrieve COREDUMP_FILENAME: %m");
else if (r == 0)
retrieve(data, len, "COREDUMP_FILENAME", &filename);
return log_oom();
fdt = mkostemp_safe(temp, O_WRONLY|O_CLOEXEC);
- if (fdt < 0) {
- log_error("Failed to create temporary file: %m");
- return -errno;
- }
+ if (fdt < 0)
+ return log_error_errno(errno, "Failed to create temporary file: %m");
log_debug("Created temporary file %s", temp);
fd = fdt;
sz = write(fdt, data, len);
if (sz < 0) {
- log_error("Failed to write temporary file: %m");
+ log_error_errno(errno, "Failed to write temporary file: %m");
r = -errno;
goto error;
}
fdf = open(filename, O_RDONLY | O_CLOEXEC);
if (fdf < 0) {
- log_error("Failed to open %s: %m", filename);
+ log_error_errno(errno, "Failed to open %s: %m", filename);
r = -errno;
goto error;
}
r = decompress_stream(filename, fdf, fd, -1);
if (r < 0) {
- log_error("Failed to decompress %s: %s", filename, strerror(-r));
+ log_error_errno(r, "Failed to decompress %s: %m", filename);
goto error;
}
#else
if (r == -ENOENT)
log_error("Cannot retrieve coredump from journal nor disk.");
else
- log_error("Failed to retrieve COREDUMP field: %s", strerror(-r));
+ log_error_errno(r, "Failed to retrieve COREDUMP field: %m");
goto error;
}
if (r < 0)
return r;
- print_info(output ? stdout : stderr, j, false);
+ print_info(arg_output ? stdout : stderr, j, false);
- if (on_tty() && !output) {
+ if (on_tty() && !arg_output) {
log_error("Refusing to dump core to tty.");
return -ENOTTY;
}
- r = save_core(j, output ? fileno(output) : STDOUT_FILENO, NULL, NULL);
- if (r < 0) {
- log_error("Coredump retrieval failed: %s", strerror(-r));
- return r;
- }
+ r = save_core(j, arg_output ? fileno(arg_output) : STDOUT_FILENO, NULL, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Coredump retrieval failed: %m");
r = sd_journal_previous(j);
if (r >= 0)
fputs("\n", stdout);
r = sd_journal_get_data(j, "COREDUMP_EXE", (const void**) &data, &len);
- if (r < 0) {
- log_error("Failed to retrieve COREDUMP_EXE field: %s", strerror(-r));
- return r;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to retrieve COREDUMP_EXE field: %m");
assert(len > strlen("COREDUMP_EXE="));
data += strlen("COREDUMP_EXE=");
}
r = save_core(j, -1, &path, &unlink_path);
- if (r < 0) {
- log_error("Failed to retrieve core: %s", strerror(-r));
- return r;
- }
+ if (r < 0)
+ return log_error_errno(r, "Failed to retrieve core: %m");
pid = fork();
if (pid < 0) {
- log_error("Failed to fork(): %m");
+ log_error_errno(errno, "Failed to fork(): %m");
r = -errno;
goto finish;
}
if (pid == 0) {
execlp("gdb", "gdb", exe, path, NULL);
- log_error("Failed to invoke gdb: %m");
+ log_error_errno(errno, "Failed to invoke gdb: %m");
_exit(1);
}
r = wait_for_terminate(pid, &st);
if (r < 0) {
- log_error("Failed to wait for gdb: %m");
+ log_error_errno(errno, "Failed to wait for gdb: %m");
goto finish;
}
if (arg_action == ACTION_NONE)
goto end;
+ sigbus_install();
+
r = sd_journal_open(&j, SD_JOURNAL_LOCAL_ONLY);
if (r < 0) {
- log_error("Failed to open journal: %s", strerror(-r));
+ log_error_errno(r, "Failed to open journal: %m");
goto end;
}
SET_FOREACH(match, matches, it) {
r = sd_journal_add_match(j, match, strlen(match));
if (r != 0) {
- log_error("Failed to add match '%s': %s",
- match, strerror(-r));
+ log_error_errno(r, "Failed to add match '%s': %m",
+ match);
goto end;
}
}
end:
pager_close();
- if (output)
- fclose(output);
+ if (arg_output)
+ fclose(arg_output);
return r >= 0 ? r : EXIT_FAILURE;
}
~ianmdlvl / elogind.git / blobdiff