Some modems, eg. Quectel EC25E, return the ESN, IMEI, and MEID even
though they support only one network type in a region. Current serial
number query gives precedence to the ESN if it exists, and does not
consider the IMEI and MEID.
Add a check of the supported radio interfaces in deciding which
serial number to return. If radio interfaces are 3GPP based, then
return the IMEI, else return the ESN. If neither exist, return MEID
if available, else fail.
The driver vtables are read-only structures. This patch declares them as
'const' allowing the compiler to (optionally) put them in the RELRO
section. RELRO pages may be marked as read-only by the linker after
the relocations have been done ensuring that they aren't inadvertently
or maliciously altered at runtime.
==14399== 16 bytes in 8 blocks are definitely lost in loss record 132 of 390
==14399== at 0x4C2BBAF: malloc (vg_replace_malloc.c:299)
==14399== by 0x59E03D9: strndup (strndup.c:43)
==14399== by 0x18277E: qmi_result_get_string (qmi.c:1794)
==14399== by 0x184221: get_ids_cb (devinfo.c:129)
==14399== by 0x18353B: service_send_callback (qmi.c:2286)
==14399== by 0x18093C: handle_packet (qmi.c:831)
==14399== by 0x180ADD: received_data (qmi.c:880)
==14399== by 0x4E826A9: g_main_context_dispatch (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5000.3)
==14399== by 0x4E82A5F: ??? (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5000.3)
==14399== by 0x4E82D81: g_main_loop_run (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.5000.3)
==14399== by 0x201900: main (main.c:306)
This was introduced by the previous patch:
drivers/qmimodem/devinfo.c: In function ‘get_ids_cb’:
drivers/qmimodem/devinfo.c:129:14: error: implicit declaration of function ‘strcmp’ [-Werror=implicit-function-declaration]
if (!str || strcmp(str, "0") == 0) {
Tom Nguyen
Jonas Bonn
Denis Kenzior
Lukasz Nowak
Marcel Holtmann