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H A Dqcow2-snapshot.c39a611a3 Wed Feb 12 13:46:24 CST 2014 Jeff Cody <jcody@redhat.com> block: Don't throw away errno via error_setg

There are a handful of places in the block layer where a failure path
has a valid -errno value, yet error_setg() is used. Those instances
should instead use error_setg_errno(), to preserve as much error
information as possible.

This patch replaces those instances with error_setg_errno(), so that
errno is passed up the stack in the error message.

Reported-By: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
H A Dvmdk.c39a611a3 Wed Feb 12 13:46:24 CST 2014 Jeff Cody <jcody@redhat.com> block: Don't throw away errno via error_setg

There are a handful of places in the block layer where a failure path
has a valid -errno value, yet error_setg() is used. Those instances
should instead use error_setg_errno(), to preserve as much error
information as possible.

This patch replaces those instances with error_setg_errno(), so that
errno is passed up the stack in the error message.

Reported-By: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
H A Dmirror.c39a611a3 Wed Feb 12 13:46:24 CST 2014 Jeff Cody <jcody@redhat.com> block: Don't throw away errno via error_setg

There are a handful of places in the block layer where a failure path
has a valid -errno value, yet error_setg() is used. Those instances
should instead use error_setg_errno(), to preserve as much error
information as possible.

This patch replaces those instances with error_setg_errno(), so that
errno is passed up the stack in the error message.

Reported-By: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>