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Fix: Dump executable base-address with readlink
[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 42ae630d99eadd1132025599f13c4505dd697a81..922899b44e50406042d47480e713686350a3c703 100644
(file)
--- a/
liblttng-ust/lttng-ust-baddr.c
+++ b/
liblttng-ust/lttng-ust-baddr.c
@@
-154,21
+154,22
@@
static
void dump_exec_baddr(struct extract_data *data)
{
void *owner = data->owner;
void dump_exec_baddr(struct extract_data *data)
{
void *owner = data->owner;
- Dl_info dl_info = { 0 };
void *base_addr_ptr;
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;
/*
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;
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)
}
int lttng_ust_baddr_statedump(void *owner)
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