* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-#define _GNU_SOURCE
#include <getopt.h>
#include <signal.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <unistd.h>
-#include <config.h>
#include <ctype.h>
#include <dirent.h>
#include <byteswap.h>
#include <inttypes.h>
+#include <stdbool.h>
#include <version.h>
#include <lttng/lttng.h>
#include <common/common.h>
+#include <common/utils.h>
#define DEFAULT_VIEWER "babeltrace"
/* Variables */
static char *progname,
- *opt_viewer_path = DEFAULT_VIEWER,
- *opt_output_path;
+ *opt_viewer_path = NULL,
+ *opt_output_path = NULL;
static char *input_path;
{ NULL, 0, NULL, 0 },
};
-static void usage(FILE *ofp)
+static void usage(void)
{
- fprintf(ofp, "LTTng Crash Trace Viewer " VERSION " - " VERSION_NAME "%s\n\n",
- GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION);
- fprintf(ofp, "usage: lttng-crash [OPTIONS] FILE\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Options:\n");
- fprintf(ofp, " -V, --version Show version.\n");
- fprintf(ofp, " -h, --help Show this help.\n");
- fprintf(ofp, " --list-options Simple listing of lttng-crash options.\n");
- fprintf(ofp, " -v, --verbose Increase verbosity.\n");
- fprintf(ofp, " -e, --viewer Specify viewer and/or options to use. This will\n"
- " completely override the default viewers so please\n"
- " make sure to specify the full command. The trace\n"
- " directory paths appended at the end to the\n"
- " arguments.\n");
- fprintf(ofp, " -x, --extract PATH Extract trace(s) to specified path. Don't view\n"
- " trace.\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Please see the lttng-crash(1) man page for full documentation.\n");
- fprintf(ofp, "See http://lttng.org for updates, bug reports and news.\n");
+ int ret = utils_show_man_page(1, "lttng-crash");
+
+ if (ret) {
+ ERR("Cannot view man page lttng-crash(1)");
+ perror("exec");
+ exit(EXIT_FAILURE);
+ }
}
static void version(FILE *ofp)
int opt, ret = 0;
if (argc < 2) {
- usage(stderr);
+ usage();
exit(EXIT_FAILURE);
}
- while ((opt = getopt_long(argc, argv, "+Vhvex:", long_options, NULL)) != -1) {
+ while ((opt = getopt_long(argc, argv, "+Vhve:x:", long_options, NULL)) != -1) {
switch (opt) {
case 'V':
version(stdout);
ret = 1;
goto end;
case 'h':
- usage(stdout);
+ usage();
ret = 1;
goto end;
case 'v':
}
break;
case 'e':
+ free(opt_viewer_path);
opt_viewer_path = strdup(optarg);
break;
case 'x':
+ free(opt_output_path);
opt_output_path = strdup(optarg);
break;
case OPT_DUMP_OPTIONS:
ret = 1;
goto end;
default:
- usage(stderr);
+ ERR("Unknown command-line option");
goto error;
}
}
+ if (!opt_viewer_path) {
+ opt_viewer_path = DEFAULT_VIEWER;
+ }
+
/* No leftovers, or more than one input path, print usage and quit */
- if ((argc - optind) == 0 || (argc - optind) > 1) {
- usage(stderr);
+ if (argc - optind != 1) {
+ ERR("Command-line error: Specify exactly one input path");
goto error;
}
return -EINVAL;
}
- DBG("Copy crash subbuffer at offset %lu", offset);
+ DBG("Copy crash subbuffer at offset %" PRIu64, offset);
sbidx = subbuf_index(offset, buf_size, subbuf_size);
/*
break;
}
case DT_REG:
+ case DT_LNK:
if (!strcmp(entry->d_name, "metadata")) {
ret = extract_one_trace(output_path,
input_path);
}
static
-int delete_trace(const char *trace_path)
+int delete_dir_recursive(const char *path)
{
- DIR *trace_dir;
- int trace_dir_fd, ret = 0, closeret;
+ DIR *dir;
+ int dir_fd, ret = 0, closeret;
struct dirent *entry;
/* Open trace directory */
- trace_dir = opendir(trace_path);
- if (!trace_dir) {
- PERROR("Cannot open '%s' path", trace_path);
- return -1;
+ dir = opendir(path);
+ if (!dir) {
+ PERROR("Cannot open '%s' path", path);
+ ret = -errno;
+ goto end;
}
- trace_dir_fd = dirfd(trace_dir);
- if (trace_dir_fd < 0) {
+ dir_fd = dirfd(dir);
+ if (dir_fd < 0) {
PERROR("dirfd");
- return -1;
+ ret = -errno;
+ goto end;
}
- while ((entry = readdir(trace_dir))) {
+ while ((entry = readdir(dir))) {
if (!strcmp(entry->d_name, ".")
|| !strcmp(entry->d_name, "..")) {
continue;
}
switch (entry->d_type) {
case DT_DIR:
- unlinkat(trace_dir_fd, entry->d_name, AT_REMOVEDIR);
+ {
+ char *subpath = zmalloc(PATH_MAX);
+
+ if (!subpath) {
+ PERROR("zmalloc path");
+ ret = -1;
+ goto end;
+ }
+ strncpy(subpath, path, PATH_MAX);
+ subpath[PATH_MAX - 1] = '\0';
+ strncat(subpath, "/",
+ PATH_MAX - strlen(subpath) - 1);
+ strncat(subpath, entry->d_name,
+ PATH_MAX - strlen(subpath) - 1);
+
+ ret = delete_dir_recursive(subpath);
+ free(subpath);
+ if (ret) {
+ /* Error occured, abort traversal. */
+ goto end;
+ }
break;
+ }
case DT_REG:
- unlinkat(trace_dir_fd, entry->d_name, 0);
+ ret = unlinkat(dir_fd, entry->d_name, 0);
+ if (ret) {
+ PERROR("Unlinking '%s'", entry->d_name);
+ goto end;
+ }
break;
default:
ret = -EINVAL;
}
}
end:
- closeret = closedir(trace_dir);
+ if (!ret) {
+ ret = rmdir(path);
+ if (ret) {
+ PERROR("rmdir '%s'", path);
+ }
+ }
+ closeret = closedir(dir);
if (closeret) {
PERROR("closedir");
}
- if (!ret) {
- ret = rmdir(trace_path);
- }
return ret;
}
*/
int main(int argc, char *argv[])
{
- int ret, has_warning = 0;
+ int ret;
+ bool has_warning = false;
const char *output_path = NULL;
char tmppath[] = "/tmp/lttng-crash-XXXXXX";
ret = parse_args(argc, argv);
if (ret > 0) {
- exit(EXIT_SUCCESS);
+ goto end;
} else if (ret < 0) {
- exit(EXIT_FAILURE);
+ has_warning = true;
+ goto end;
}
if (opt_output_path) {
ret = mkdir(output_path, S_IRWXU | S_IRWXG);
if (ret) {
PERROR("mkdir");
- exit(EXIT_FAILURE);
+ has_warning = true;
+ goto end;
}
} else {
output_path = mkdtemp(tmppath);
if (!output_path) {
PERROR("mkdtemp");
- exit(EXIT_FAILURE);
+ has_warning = true;
+ goto end;
}
}
ret = extract_trace_recursive(output_path, input_path);
if (ret < 0) {
- exit(EXIT_FAILURE);
+ has_warning = true;
+ goto end;
} else if (ret > 0) {
- has_warning = 1;
+ /* extract_trace_recursive reported a warning. */
+ has_warning = true;
}
if (!opt_output_path) {
/* View trace */
ret = view_trace(opt_viewer_path, output_path);
- if (ret)
- has_warning = 1;
-
+ if (ret) {
+ has_warning = true;
+ }
/* unlink temporary trace */
- ret = delete_trace(output_path);
- if (ret)
- has_warning = 1;
+ ret = delete_dir_recursive(output_path);
+ if (ret) {
+ has_warning = true;
+ }
}
- if (has_warning)
- exit(EXIT_FAILURE);
- exit(EXIT_SUCCESS);
+end:
+ exit(has_warning ? EXIT_FAILURE : EXIT_SUCCESS);
}
projects / lttng-tools.git / blobdiff