X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-crash%2Flttng-crash.c;h=98c52c59dcd835a2c48cde3def2543d025f13132;hp=298ed71a43c2b1b47053156f624aa50b39fd0519;hb=refs%2Fheads%2Fsow-2019-0002-rev1;hpb=ef6fc488ca5672ccd46efac9de9db0cfd24bc810

diff --git a/src/bin/lttng-crash/lttng-crash.c b/src/bin/lttng-crash/lttng-crash.c
index 298ed71a4..98c52c59d 100644
--- a/src/bin/lttng-crash/lttng-crash.c
+++ b/src/bin/lttng-crash/lttng-crash.c
@@ -2,18 +2,8 @@
  * Copyright (C) 2011 David Goulet <david.goulet@polymtl.ca>
  * Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License, version 2 only,
- * as published by the Free Software Foundation.
+ * SPDX-License-Identifier: GPL-2.0-only
  *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
 #include <getopt.h>
@@ -190,9 +180,9 @@ struct lttng_crash_layout {
 };
 
 /* Variables */
-static char *progname,
-	*opt_viewer_path = NULL,
-	*opt_output_path = NULL;
+static const char *progname;
+static char *opt_viewer_path = NULL;
+static char *opt_output_path = NULL;
 
 static char *input_path;
 
@@ -227,9 +217,10 @@ static void usage(void)
 static void version(FILE *ofp)
 {
 	fprintf(ofp, "%s (LTTng Crash Trace Viewer) " VERSION " - " VERSION_NAME
-"%s\n",
+"%s%s\n",
 			progname,
-			GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION);
+			GIT_VERSION[0] == '\0' ? "" : " - " GIT_VERSION,
+			EXTRA_VERSION_NAME[0] == '\0' ? "" : " - " EXTRA_VERSION_NAME);
 }
 
 /*
@@ -305,7 +296,7 @@ static int parse_args(int argc, char **argv)
 	}
 
 	if (!opt_viewer_path) {
-		opt_viewer_path = DEFAULT_VIEWER;
+		opt_viewer_path = (char *) DEFAULT_VIEWER;
 	}
 
 	/* No leftovers, or more than one input path, print usage and quit */
@@ -498,7 +489,8 @@ int check_magic(const uint8_t *magic)
 }
 
 static
-int get_crash_layout(struct lttng_crash_layout *layout, int fd)
+int get_crash_layout(struct lttng_crash_layout *layout, int fd,
+		const char *input_file)
 {
 	char *map;
 	int ret = 0, unmapret;
@@ -509,7 +501,21 @@ int get_crash_layout(struct lttng_crash_layout *layout, int fd)
 	const struct crash_abi_unknown *abi;
 	uint16_t endian;
 	enum lttng_crash_type layout_type;
+	struct stat stat;
 
+	ret = fstat(fd, &stat);
+	if (ret < 0) {
+		PERROR("Failed to fstat '%s'", input_file);
+		return -1;
+	}
+	if (stat.st_size < RB_CRASH_DUMP_ABI_LEN) {
+		ERR("File '%s' truncated: file length of %" PRIi64
+				" bytes does not meet the minimal expected "
+				"length of %d bytes",
+				input_file, (int64_t) stat.st_size,
+				RB_CRASH_DUMP_ABI_LEN);
+		return -1;
+	}
 	map = mmap(NULL, RB_CRASH_DUMP_ABI_LEN, PROT_READ, MAP_PRIVATE,
 		fd, 0);
 	if (map == MAP_FAILED) {
@@ -838,7 +844,7 @@ int extract_file(int output_dir_fd, const char *output_file,
 	}
 
 	/* Query the crash ABI layout */
-	ret = get_crash_layout(&layout, fd_src);
+	ret = get_crash_layout(&layout, fd_src, input_file);
 	if (ret) {
 		goto close_src;
 	}