lttng ust: support ppc64le within configure

[lttng-ust.git] / liblttng-ust / lttng-ust-baddr.c

diff --git a/liblttng-ust/lttng-ust-baddr.c b/liblttng-ust/lttng-ust-baddr.c
index 90ffe688a3c65ba18c28f54a719f5a33ac235db8..dec7e82d6e9c84afb065a1d33ec9ea0f53760c5c 100644 (file)
--- a/liblttng-ust/lttng-ust-baddr.c
+++ b/liblttng-ust/lttng-ust-baddr.c
@@ -18,7 +18,6 @@
 
 #define _LGPL_SOURCE
 #define _GNU_SOURCE
-#include <dlfcn.h>
 #include <link.h>
 
 #include <sys/types.h>
@@ -155,28 +154,29 @@ static
 void dump_exec_baddr(struct extract_data *data)
 {
        void *owner = data->owner;
-       Dl_info dl_info = { 0 };
        void *base_addr_ptr;
-       char resolved_path[PATH_MAX];
+       char exe_path[PATH_MAX];
+       ssize_t exe_len;
 
        base_addr_ptr = data->exec_baddr;
        if (!base_addr_ptr)
                return;
        /*
-        * We have to use Dl_info to determine the executable full path.
+        * We have to use /proc/self/exe to determine the executable full
+        * path.
         */
-       if (!dladdr(base_addr_ptr, &dl_info))
+       exe_len = readlink("/proc/self/exe", exe_path, sizeof(exe_path) - 1);
+       if (exe_len <= 0)
                return;
-       if (!realpath(dl_info.dli_fname, resolved_path))
-               return;
-       trace_baddr(base_addr_ptr, resolved_path, 0, owner);
+       exe_path[exe_len] = '\0';
+       trace_baddr(base_addr_ptr, exe_path, 0, owner);
 }
 
 int lttng_ust_baddr_statedump(void *owner)
 {
        struct extract_data data;
 
-       if (getenv("LTTNG_UST_WITHOUT_BADDR_STATEDUMP"))
+       if (!getenv("LTTNG_UST_WITH_EXPERIMENTAL_BADDR_STATEDUMP"))
                return 0;
 
        data.owner = owner;