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scripting: report dlerror() output

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dlopen() and dlsym() can fail in various ways, and we can find out
how it failed by calling dlerror(). This is particularly useful if
you typo the filename of a script when explicitly passing it with
--script, and dlopen actually tells you that the file doesn't exist
instead of leading you down a rabbit hole of disassembling your
shared object file to figure out why the thing won't load.
This commit is contained in:
Nicolas F 2017-10-31 21:39:15 +01:00 committed by wm4
parent eb8957cea1
commit 2e24f5f1b5
1 changed files with 7 additions and 4 deletions
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11
player/scripting.c
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@ -254,7 +254,7 @@ typedef int (*mpv_open_cplugin)(mpv_handle *handle);
static int load_cplugin(struct mpv_handle *client, const char *fname)
{
int r = -1;
MPContext *ctx = mp_client_get_core(client);
void *lib = dlopen(fname, RTLD_NOW | RTLD_LOCAL);
if (!lib)
goto error;
@ -263,9 +263,12 @@ static int load_cplugin(struct mpv_handle *client, const char *fname)
mpv_open_cplugin sym = (mpv_open_cplugin)dlsym(lib, MPV_DLOPEN_FN);
if (!sym)
goto error;
r = sym(client) ? -1 : 0;
error:
return r;
return sym(client) ? -1 : 0;
error: ;
char *err = dlerror();
if (err)
MP_ERR(ctx, "C plugin error: '%s'\n", err);
return -1;
}
const struct mp_scripting mp_scripting_cplugin = {