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| author | Sverker Eriksson <[email protected]> | 2011-10-10 18:07:32 +0200 |
|---|---|---|
| committer | Sverker Eriksson <[email protected]> | 2011-10-10 18:07:32 +0200 |
| commit | 7617c67167dedf894dbb3241b1acc805e9e0c986 (patch) | |
| tree | 15c5ab6dbbec97707e5331955a5ac27ca1d1efed | |
| parent | e25af6697ff70a8cebdd3f0a006e17697f4ead1c (diff) | |
| download | otp-7617c67167dedf894dbb3241b1acc805e9e0c986.tar.gz otp-7617c67167dedf894dbb3241b1acc805e9e0c986.tar.bz2 otp-7617c67167dedf894dbb3241b1acc805e9e0c986.zip | |
Fix dlopen-leak of drivers with incorrect version
| -rw-r--r-- | erts/emulator/beam/erl_bif_ddll.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/erts/emulator/beam/erl_bif_ddll.c b/erts/emulator/beam/erl_bif_ddll.c index d714eacd06..27457a9fec 100644 --- a/erts/emulator/beam/erl_bif_ddll.c +++ b/erts/emulator/beam/erl_bif_ddll.c @@ -1558,14 +1558,14 @@ static int do_load_driver_entry(DE_Handle *dh, char *path, char *name) if ((res = erts_sys_ddll_load_driver_init(dh->handle, &init_handle)) != ERL_DE_NO_ERROR) { - erts_sys_ddll_close(dh->handle); - return ERL_DE_LOAD_ERROR_NO_INIT; + res = ERL_DE_LOAD_ERROR_NO_INIT; + goto error; } dp = erts_sys_ddll_call_init(init_handle); if (dp == NULL) { - erts_sys_ddll_close(dh->handle); - return ERL_DE_LOAD_ERROR_FAILED_INIT; + res = ERL_DE_LOAD_ERROR_FAILED_INIT; + goto error; } switch (dp->extended_marker) { @@ -1583,24 +1583,27 @@ static int do_load_driver_entry(DE_Handle *dh, char *path, char *name) || dp->handle2 != NULL || dp->process_exit != NULL) { /* Old driver; needs to be recompiled... */ - return ERL_DE_LOAD_ERROR_INCORRECT_VERSION; + res = ERL_DE_LOAD_ERROR_INCORRECT_VERSION; + goto error; } break; case ERL_DRV_EXTENDED_MARKER: if (ERL_DRV_EXTENDED_MAJOR_VERSION != dp->major_version || ERL_DRV_EXTENDED_MINOR_VERSION < dp->minor_version) { /* Incompatible driver version */ - return ERL_DE_LOAD_ERROR_INCORRECT_VERSION; + res = ERL_DE_LOAD_ERROR_INCORRECT_VERSION; + goto error; } break; default: /* Old driver; needs to be recompiled... */ - return ERL_DE_LOAD_ERROR_INCORRECT_VERSION; + res = ERL_DE_LOAD_ERROR_INCORRECT_VERSION; + goto error; } if (strcmp(name, dp->driver_name) != 0) { - erts_sys_ddll_close(dh->handle); - return ERL_DE_LOAD_ERROR_BAD_NAME; + res = ERL_DE_LOAD_ERROR_BAD_NAME; + goto error; } erts_smp_atomic_init_nob(&(dh->refc), (erts_aint_t) 0); dh->port_count = 0; @@ -1615,11 +1618,14 @@ static int do_load_driver_entry(DE_Handle *dh, char *path, char *name) */ erts_free(ERTS_ALC_T_DDLL_HANDLE, dh->full_path); dh->full_path = NULL; - erts_sys_ddll_close(dh->handle); - return ERL_DE_LOAD_ERROR_FAILED_INIT; + res = ERL_DE_LOAD_ERROR_FAILED_INIT; + goto error; } - return ERL_DE_NO_ERROR; + +error: + erts_sys_ddll_close(dh->handle); + return res; } static int do_unload_driver_entry(DE_Handle *dh, Eterm *save_name) |