[edk2-devel] [edk2 PATCH 07/48] OvmfPkg/VirtioFsDxe: map "errno" values to EFI_STATUS
Laszlo Ersek
lersek at redhat.com
Wed Dec 16 21:10:44 UTC 2020
The VirtioFsFuseCheckResponse() function dedicates the EFI_DEVICE_ERROR
status code to the case when the Virtio Filesystem device explicitly
returns an error via the "VIRTIO_FS_FUSE_RESPONSE.Error" field.
Said field effectively carries a Linux "errno" value. Introduce a helper
function for mapping "errno" values to (hopefully) reasonable EFI_STATUS
codes. This way we'll be able to propagate "errno" values as EFI_STATUS
return codes along the UEFI call stack -- in some detail anyway.
Cc: Ard Biesheuvel <ard.biesheuvel at arm.com>
Cc: Jordan Justen <jordan.l.justen at intel.com>
Cc: Philippe Mathieu-Daudé <philmd at redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097
Signed-off-by: Laszlo Ersek <lersek at redhat.com>
---
OvmfPkg/VirtioFsDxe/VirtioFsDxe.h | 5 +
OvmfPkg/VirtioFsDxe/Helpers.c | 200 ++++++++++++++++++++
2 files changed, 205 insertions(+)
diff --git a/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h b/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
index f7eae9a4b71a..772ab743cc8e 100644
--- a/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
+++ b/OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
@@ -144,16 +144,21 @@ VirtioFsFuseNewRequest (
EFI_STATUS
VirtioFsFuseCheckResponse (
IN VIRTIO_FS_SCATTER_GATHER_LIST *ResponseSgList,
IN UINT64 RequestId,
OUT UINTN *TailBufferFill
);
+EFI_STATUS
+VirtioFsErrnoToEfiStatus (
+ IN INT32 Errno
+ );
+
//
// EFI_SIMPLE_FILE_SYSTEM_PROTOCOL member functions for the Virtio Filesystem
// driver.
//
EFI_STATUS
EFIAPI
VirtioFsOpenVolume (
diff --git a/OvmfPkg/VirtioFsDxe/Helpers.c b/OvmfPkg/VirtioFsDxe/Helpers.c
index 5bd2dc641f6d..334fa6c7dd26 100644
--- a/OvmfPkg/VirtioFsDxe/Helpers.c
+++ b/OvmfPkg/VirtioFsDxe/Helpers.c
@@ -909,8 +909,208 @@ VirtioFsFuseCheckResponse (
// If the last buffer is considered variable size, report its filled size.
//
if (TailBufferFill != NULL) {
*TailBufferFill = ResponseSgList->IoVec[NumFixedSizeVec].Transferred;
}
return EFI_SUCCESS;
}
+
+/**
+ An ad-hoc function for mapping FUSE (well, Linux) "errno" values to
+ EFI_STATUS.
+
+ @param[in] Errno The "VIRTIO_FS_FUSE_RESPONSE.Error" value, returned by the
+ Virtio Filesystem device. The value is expected to be
+ negative.
+
+ @return An EFI_STATUS error code that's deemed a passable
+ mapping for the Errno value.
+
+ @retval EFI_DEVICE_ERROR Fallback EFI_STATUS code for unrecognized Errno
+ values.
+**/
+EFI_STATUS
+VirtioFsErrnoToEfiStatus (
+ IN INT32 Errno
+ )
+{
+ switch (Errno) {
+ case -1: // EPERM Operation not permitted
+ return EFI_SECURITY_VIOLATION;
+
+ case -2: // ENOENT No such file or directory
+ case -3: // ESRCH No such process
+ case -6: // ENXIO No such device or address
+ case -10: // ECHILD No child processes
+ case -19: // ENODEV No such device
+ case -49: // EUNATCH Protocol driver not attached
+ case -65: // ENOPKG Package not installed
+ case -79: // ELIBACC Can not access a needed shared library
+ case -126: // ENOKEY Required key not available
+ return EFI_NOT_FOUND;
+
+ case -4: // EINTR Interrupted system call
+ case -11: // EAGAIN, EWOULDBLOCK Resource temporarily unavailable
+ case -16: // EBUSY Device or resource busy
+ case -26: // ETXTBSY Text file busy
+ case -35: // EDEADLK, EDEADLOCK Resource deadlock avoided
+ case -39: // ENOTEMPTY Directory not empty
+ case -42: // ENOMSG No message of desired type
+ case -61: // ENODATA No data available
+ case -85: // ERESTART Interrupted system call should be restarted
+ return EFI_NOT_READY;
+
+ case -5: // EIO Input/output error
+ case -45: // EL2NSYNC Level 2 not synchronized
+ case -46: // EL3HLT Level 3 halted
+ case -47: // EL3RST Level 3 reset
+ case -51: // EL2HLT Level 2 halted
+ case -121: // EREMOTEIO Remote I/O error
+ case -133: // EHWPOISON Memory page has hardware error
+ return EFI_DEVICE_ERROR;
+
+ case -7: // E2BIG Argument list too long
+ case -36: // ENAMETOOLONG File name too long
+ case -90: // EMSGSIZE Message too long
+ return EFI_BAD_BUFFER_SIZE;
+
+ case -8: // ENOEXEC Exec format error
+ case -15: // ENOTBLK Block device required
+ case -18: // EXDEV Invalid cross-device link
+ case -20: // ENOTDIR Not a directory
+ case -21: // EISDIR Is a directory
+ case -25: // ENOTTY Inappropriate ioctl for device
+ case -27: // EFBIG File too large
+ case -29: // ESPIPE Illegal seek
+ case -38: // ENOSYS Function not implemented
+ case -59: // EBFONT Bad font file format
+ case -60: // ENOSTR Device not a stream
+ case -83: // ELIBEXEC Cannot exec a shared library directly
+ case -88: // ENOTSOCK Socket operation on non-socket
+ case -91: // EPROTOTYPE Protocol wrong type for socket
+ case -92: // ENOPROTOOPT Protocol not available
+ case -93: // EPROTONOSUPPORT Protocol not supported
+ case -94: // ESOCKTNOSUPPORT Socket type not supported
+ case -95: // ENOTSUP, EOPNOTSUPP Operation not supported
+ case -96: // EPFNOSUPPORT Protocol family not supported
+ case -97: // EAFNOSUPPORT Address family not supported by protocol
+ case -99: // EADDRNOTAVAIL Cannot assign requested address
+ case -118: // ENOTNAM Not a XENIX named type file
+ case -120: // EISNAM Is a named type file
+ case -124: // EMEDIUMTYPE Wrong medium type
+ return EFI_UNSUPPORTED;
+
+ case -9: // EBADF Bad file descriptor
+ case -14: // EFAULT Bad address
+ case -44: // ECHRNG Channel number out of range
+ case -48: // ELNRNG Link number out of range
+ case -53: // EBADR Invalid request descriptor
+ case -56: // EBADRQC Invalid request code
+ case -57: // EBADSLT Invalid slot
+ case -76: // ENOTUNIQ Name not unique on network
+ case -84: // EILSEQ Invalid or incomplete multibyte or wide character
+ return EFI_NO_MAPPING;
+
+ case -12: // ENOMEM Cannot allocate memory
+ case -23: // ENFILE Too many open files in system
+ case -24: // EMFILE Too many open files
+ case -31: // EMLINK Too many links
+ case -37: // ENOLCK No locks available
+ case -40: // ELOOP Too many levels of symbolic links
+ case -50: // ENOCSI No CSI structure available
+ case -55: // ENOANO No anode
+ case -63: // ENOSR Out of streams resources
+ case -82: // ELIBMAX Attempting to link in too many shared libraries
+ case -87: // EUSERS Too many users
+ case -105: // ENOBUFS No buffer space available
+ case -109: // ETOOMANYREFS Too many references: cannot splice
+ case -119: // ENAVAIL No XENIX semaphores available
+ case -122: // EDQUOT Disk quota exceeded
+ return EFI_OUT_OF_RESOURCES;
+
+ case -13: // EACCES Permission denied
+ return EFI_ACCESS_DENIED;
+
+ case -17: // EEXIST File exists
+ case -98: // EADDRINUSE Address already in use
+ case -106: // EISCONN Transport endpoint is already connected
+ case -114: // EALREADY Operation already in progress
+ case -115: // EINPROGRESS Operation now in progress
+ return EFI_ALREADY_STARTED;
+
+ case -22: // EINVAL Invalid argument
+ case -33: // EDOM Numerical argument out of domain
+ return EFI_INVALID_PARAMETER;
+
+ case -28: // ENOSPC No space left on device
+ case -54: // EXFULL Exchange full
+ return EFI_VOLUME_FULL;
+
+ case -30: // EROFS Read-only file system
+ return EFI_WRITE_PROTECTED;
+
+ case -32: // EPIPE Broken pipe
+ case -43: // EIDRM Identifier removed
+ case -67: // ENOLINK Link has been severed
+ case -68: // EADV Advertise error
+ case -69: // ESRMNT Srmount error
+ case -70: // ECOMM Communication error on send
+ case -73: // EDOTDOT RFS specific error
+ case -78: // EREMCHG Remote address changed
+ case -86: // ESTRPIPE Streams pipe error
+ case -102: // ENETRESET Network dropped connection on reset
+ case -103: // ECONNABORTED Software caused connection abort
+ case -104: // ECONNRESET Connection reset by peer
+ case -116: // ESTALE Stale file handle
+ case -125: // ECANCELED Operation canceled
+ case -128: // EKEYREVOKED Key has been revoked
+ case -129: // EKEYREJECTED Key was rejected by service
+ case -130: // EOWNERDEAD Owner died
+ case -131: // ENOTRECOVERABLE State not recoverable
+ return EFI_ABORTED;
+
+ case -34: // ERANGE Numerical result out of range
+ case -75: // EOVERFLOW Value too large for defined data type
+ return EFI_BUFFER_TOO_SMALL;
+
+ case -52: // EBADE Invalid exchange
+ case -108: // ESHUTDOWN Cannot send after transport endpoint shutdown
+ case -111: // ECONNREFUSED Connection refused
+ return EFI_END_OF_FILE;
+
+ case -62: // ETIME Timer expired
+ case -110: // ETIMEDOUT Connection timed out
+ case -127: // EKEYEXPIRED Key has expired
+ return EFI_TIMEOUT;
+
+ case -64: // ENONET Machine is not on the network
+ case -66: // EREMOTE Object is remote
+ case -72: // EMULTIHOP Multihop attempted
+ case -100: // ENETDOWN Network is down
+ case -101: // ENETUNREACH Network is unreachable
+ case -112: // EHOSTDOWN Host is down
+ case -113: // EHOSTUNREACH No route to host
+ case -123: // ENOMEDIUM No medium found
+ case -132: // ERFKILL Operation not possible due to RF-kill
+ return EFI_NO_MEDIA;
+
+ case -71: // EPROTO Protocol error
+ return EFI_PROTOCOL_ERROR;
+
+ case -74: // EBADMSG Bad message
+ case -77: // EBADFD File descriptor in bad state
+ case -80: // ELIBBAD Accessing a corrupted shared library
+ case -81: // ELIBSCN .lib section in a.out corrupted
+ case -117: // EUCLEAN Structure needs cleaning
+ return EFI_VOLUME_CORRUPTED;
+
+ case -89: // EDESTADDRREQ Destination address required
+ case -107: // ENOTCONN Transport endpoint is not connected
+ return EFI_NOT_STARTED;
+
+ default:
+ break;
+ }
+
+ return EFI_DEVICE_ERROR;
+}
--
2.19.1.3.g30247aa5d201
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