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manager: modem_reset: fix file descriptor leek

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fd wasn't being closed if the write failed. Theoretically if a system
with an unstable modem ran for long enough, this could bring down
eg25-manager.
This commit is contained in:
Aren Moynihan
2024-10-04 11:21:25 -04:00
parent 1482899888
commit b53702ad0b
1 changed files with 5 additions and 3 deletions
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8
src/manager.c
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@@ -226,24 +226,26 @@ gboolean modem_reset(struct EG25Manager *manager)
g_warning("Unable to open /sys/bus/usb/drivers/usb/unbind");
goto error;
}
ret = write(fd, manager->modem_usb_id, len);
close(fd);
if (ret < len) {
g_warning("Couldn't unbind modem: wrote %d/%d bytes", ret, len);
goto error;
}
close(fd);
fd = open("/sys/bus/usb/drivers/usb/bind", O_WRONLY);
if (fd < 0) {
g_warning("Unable to open /sys/bus/usb/drivers/usb/unbind");
g_warning("Unable to open /sys/bus/usb/drivers/usb/bind");
goto error;
}
ret = write(fd, manager->modem_usb_id, len);
close(fd);
if (ret < len) {
g_warning("Couldn't bind modem: wrote %d/%d bytes", ret, len);
goto error;
}
close(fd);
g_message("Successfully reset modem's USB connection");