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OvmfPkg/VirtioFsDxe: map "errno" values to EFI_STATUS 

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@arm.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3097
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20201216211125.19496-8-lersek@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@arm.com>
This commit is contained in:
Laszlo Ersek 2020-12-16 22:10:44 +01:00 committed by mergify[bot]
parent 6a2dc768f0
commit e8a74c9a07
2 changed files with 205 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

200
OvmfPkg/VirtioFsDxe/Helpers.c
View File

@ -914,3 +914,203 @@ VirtioFsFuseCheckResponse (
return EFI_SUCCESS; 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;
}

5
OvmfPkg/VirtioFsDxe/VirtioFsDxe.h
View File

@ -149,6 +149,11 @@ VirtioFsFuseCheckResponse (
OUT UINTN *TailBufferFill OUT UINTN *TailBufferFill
); );
EFI_STATUS
VirtioFsErrnoToEfiStatus (
IN INT32 Errno
);
// //
// EFI_SIMPLE_FILE_SYSTEM_PROTOCOL member functions for the Virtio Filesystem // EFI_SIMPLE_FILE_SYSTEM_PROTOCOL member functions for the Virtio Filesystem
// driver. // driver.