nhyatt/putty-source
1
0
Fork 0
mirror of https://git.tartarus.org/simon/putty.git synced 2025-01-09 17:38:00 +00:00
Code Issues Projects Releases Wiki Activity

sclog: don't try to find libc functions outside libc.

Browse Source 
On AArch64, there are unexpectedly malloc and free functions in ld.so,
so the module-load function finds them there, wraps them, and then
misses the real versions in libc.
This commit is contained in:
Simon Tatham 2020-11-26 17:57:25 +00:00
parent b3f2726b83
commit e97a364d07
1 changed files with 27 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
test/sclog/sclog.c
View File

@ -546,6 +546,7 @@ static void try_wrap_fn(const module_data_t *module, const char *name,
static void load_module(
void *drcontext, const module_data_t *module, bool loaded)
{
bool libc = !strncmp(dr_module_preferred_name(module), "libc", 4);
#define TRY_WRAP(fn, pre, post) do \
{ \
@ -556,6 +557,7 @@ static void load_module(
if (loaded) {
TRY_WRAP("log_to_file_real", wrap_logsetfile, NULL);
TRY_WRAP("dry_run_real", NULL, wrap_dryrun);
if (libc) {
TRY_WRAP("malloc", wrap_malloc_pre, wrap_alloc_post);
TRY_WRAP("realloc", wrap_realloc_pre, wrap_alloc_post);
TRY_WRAP("free", wrap_free_pre, unpause_post);
@ -582,6 +584,7 @@ static void load_module(
TRY_WRAP("__memset_sse2", wrap_memset_pre, unpause_post);
TRY_WRAP("cfree", wrap_free_pre, unpause_post);
}
}
}
/*