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authorRich Felker <dalias@aerifal.cx>2013-12-01 17:27:25 -0500
committerRich Felker <dalias@aerifal.cx>2013-12-01 17:27:25 -0500
commit179ab5a505c7060e2703015961173ee900eed780 (patch)
tree55636e19f1ebfe9d0a129c0021035ef95fdc3d99 /src/ldso/dynlink.c
parent6ec82a3b58ee1b873ff0dfad8fa9d41c3d25dcc0 (diff)
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add infrastructure to record and report the version of libc.so
this is still experimental and subject to change. for git checkouts,
an attempt is made to record the exact revision to aid in bug reports
and debugging. no version information is recorded in the static libc.a
or binaries it's linked into.
Diffstat (limited to 'src/ldso/dynlink.c')
-rw-r--r--src/ldso/dynlink.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index 174df572..27d92f2b 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -93,6 +93,8 @@ void __init_ssp(size_t *);
 void *__install_initial_tls(void *);
 void __init_libc(char **, char *);
 
+const char *__libc_get_version(void);
+
 static struct dso *head, *tail, *ldso, *fini_head;
 static char *env_path, *sys_path;
 static unsigned long long gencnt;
@@ -1040,8 +1042,11 @@ void *__dynlink(int argc, char **argv)
 		*argv++ = (void *)-1;
 		if (argv[0] && !strcmp(argv[0], "--")) *argv++ = (void *)-1;
 		if (!argv[0]) {
-			dprintf(2, "musl libc/dynamic program loader\n");
-			dprintf(2, "usage: %s pathname%s\n", ldname,
+			dprintf(2, "musl libc\n"
+				"Version %s\n"
+				"Dynamic Program Loader\n"
+				"Usage: %s [--] pathname%s\n",
+				__libc_get_version(), ldname,
 				ldd_mode ? "" : " [args]");
 			_exit(1);
 		}