Re: [libvirt] [PATCH 8/9] virpcimock: Add PCI driver which always fails

Such driver can be used to make sure PCI APIs fail properly. Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com&gt; --- tests/virpcimock.c | 33 +++++++++++++++++++++------------ 1 file changed, 21 insertions(+), 12 deletions(-) diff --git a/tests/virpcimock.c b/tests/virpcimock.c index f8ea9c7..b514619 100644 --- a/tests/virpcimock.c +++ b/tests/virpcimock.c @@ -107,11 +107,19 @@ char *fakesysfsdir; * */ +enum driverActions { + PCI_ACTION_BIND = 1 << 0, + PCI_ACTION_UNBIND = 1 << 1, + PCI_ACTION_NEW_ID = 1 << 2, + PCI_ACTION_REMOVE_ID = 1 << 3, +}; + struct pciDriver { char *name; int *vendor; /* List of vendor:device IDs the driver can handle */ int *device; size_t len; /* @len is used for both @vendor and @device */ + int fail; /* Actions on this driver which should fail? */ }; struct pciDevice { @@ -143,7 +151,7 @@ static void pci_device_new_from_stub(const struct pciDevice *data); static struct pciDevice *pci_device_find_by_id(const char *id); static struct pciDevice *pci_device_find_by_content(const char *path); -static void pci_driver_new(const char *name, ...); +static void pci_driver_new(const char *name, int fail, ...); static struct pciDriver *pci_driver_find_by_dev(struct pciDevice *dev); static struct pciDriver *pci_driver_find_by_path(const char *path); static int pci_driver_bind(struct pciDriver *driver, struct pciDevice *dev); @@ -415,7 +423,7 @@ pci_device_autobind(struct pciDevice *dev) * PCI Driver functions */ static void -pci_driver_new(const char *name, ...) +pci_driver_new(const char *name, int fail, ...) { struct pciDriver *driver; va_list args; @@ -427,10 +435,12 @@ pci_driver_new(const char *name, ...) virAsprintfQuiet(&driverpath, "%s/drivers/%s", fakesysfsdir, name) < 0) ABORT_OOM(); + driver->fail = fail; + if (virFileMakePath(driverpath) < 0) ABORT("Unable to create: %s", driverpath); - va_start(args, name); + va_start(args, fail); while ((vendor = va_arg(args, int)) != -1) { if ((device = va_arg(args, int)) == -1) @@ -497,8 +507,8 @@ pci_driver_bind(struct pciDriver *driver, int ret = -1; char *devpath = NULL, *driverpath = NULL; - if (dev->driver) { - /* Device already bound */ + if (dev->driver || PCI_ACTION_BIND & driver->fail) { + /* Device already bound or failing driver requested */ errno = ENODEV; return ret; } @@ -544,8 +554,8 @@ pci_driver_unbind(struct pciDriver *driver, int ret = -1; char *devpath = NULL, *driverpath = NULL; - if (dev->driver != driver) { - /* Device not bound to the @driver */ + if (dev->driver != driver || PCI_ACTION_UNBIND & driver->fail) { + /* Device not bound to the @driver or failing driver used */