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| author | John Levon <john.levon@nutanix.com> | 2025-05-07 16:20:11 +0100 |
|---|---|---|
| committer | Cédric Le Goater <clg@redhat.com> | 2025-05-09 12:42:28 +0200 |
| commit | 5363a1a117ea6e1af520d1faed303f944975f760 (patch) | |
| tree | c9a010fa01dd218801d98df22dedf1e3f1b63bd3 | |
| parent | 2e27becf17be231bc15588a51c0b61efec68d021 (diff) | |
| download | qemu-5363a1a117ea6e1af520d1faed303f944975f760.zip qemu-5363a1a117ea6e1af520d1faed303f944975f760.tar.gz qemu-5363a1a117ea6e1af520d1faed303f944975f760.tar.bz2 | |
vfio: add strread/writeerror()
Add simple helpers to correctly report failures from read/write routines
using the return -errno style.
Signed-off-by: John Levon <john.levon@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250507152020.1254632-7-john.levon@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
| -rw-r--r-- | include/hw/vfio/vfio-device.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/hw/vfio/vfio-device.h b/include/hw/vfio/vfio-device.h index a7eaaa3..4a32202 100644 --- a/include/hw/vfio/vfio-device.h +++ b/include/hw/vfio/vfio-device.h @@ -115,6 +115,20 @@ struct VFIODeviceOps { int (*vfio_load_config)(VFIODevice *vdev, QEMUFile *f); }; +/* + * Given a return value of either a short number of bytes read or -errno, + * construct a meaningful error message. + */ +#define strreaderror(ret) \ + (ret < 0 ? strerror(-ret) : "short read") + +/* + * Given a return value of either a short number of bytes written or -errno, + * construct a meaningful error message. + */ +#define strwriteerror(ret) \ + (ret < 0 ? strerror(-ret) : "short write") + void vfio_device_irq_disable(VFIODevice *vbasedev, int index); void vfio_device_irq_unmask(VFIODevice *vbasedev, int index); void vfio_device_irq_mask(VFIODevice *vbasedev, int index); |