[PATCH v2 13/13] block: remove support for using "file" driver with block/char devices

[Daniel P . Berrangé]

The 'host_device' and 'host_cdrom' drivers must be used instead.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 block/file-posix.c               | 17 ++++++-----------
 docs/system/deprecated.rst       |  7 -------
 docs/system/removed-features.rst |  7 +++++++
 tests/qemu-iotests/226.out       | 10 +++++-----
 4 files changed, 18 insertions(+), 23 deletions(-)

diff --git a/block/file-posix.c b/block/file-posix.c
index 05079b40ca..20e14f8e96 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -719,15 +719,9 @@ static int raw_open_common(BlockDriverState *bs, QDict 
*options,
     }
 
     if (!device) {
-        if (S_ISBLK(st.st_mode)) {
-            warn_report("Opening a block device as a file using the '%s' "
-                        "driver is deprecated", bs->drv->format_name);
-        } else if (S_ISCHR(st.st_mode)) {
-            warn_report("Opening a character device as a file using the '%s' "
-                        "driver is deprecated", bs->drv->format_name);
-        } else if (!S_ISREG(st.st_mode)) {
-            error_setg(errp, "A regular file was expected by the '%s' driver, "
-                       "but something else was given", bs->drv->format_name);
+        if (!S_ISREG(st.st_mode)) {
+            error_setg(errp, "'%s' driver requires '%s' to be a regular file",
+                       bs->drv->format_name, bs->filename);
             ret = -EINVAL;
             goto fail;
         } else {
@@ -736,8 +730,9 @@ static int raw_open_common(BlockDriverState *bs, QDict 
*options,
         }
     } else {
         if (!(S_ISCHR(st.st_mode) || S_ISBLK(st.st_mode))) {
-            error_setg(errp, "'%s' driver expects either "
-                       "a character or block device", bs->drv->format_name);
+            error_setg(errp, "'%s' driver requires '%s' to be either "
+                       "a character or block device",
+                       bs->drv->format_name, bs->filename);
             ret = -EINVAL;
             goto fail;
         }
diff --git a/docs/system/deprecated.rst b/docs/system/deprecated.rst
index f6d0b16579..176b837a42 100644
--- a/docs/system/deprecated.rst
+++ b/docs/system/deprecated.rst
@@ -30,13 +30,6 @@ would automatically enable USB support on the machine type.
 If using the new syntax, USB support must be explicitly
 enabled via the ``-machine usb=on`` argument.
 
-``-drive file=json:{...{'driver':'file'}}`` (since 3.0)
-'''''''''''''''''''''''''''''''''''''''''''''''''''''''
-
-The 'file' driver for drives is no longer appropriate for character or host
-devices and will only accept regular files (S_IFREG). The correct driver
-for these file types is 'host_cdrom' or 'host_device' as appropriate.
-
 ``QEMU_AUDIO_`` environment variables and ``-audio-help`` (since 4.0)
 '''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
 
diff --git a/docs/system/removed-features.rst b/docs/system/removed-features.rst
index eb4b71750c..7b7bf7214e 100644
--- a/docs/system/removed-features.rst
+++ b/docs/system/removed-features.rst
@@ -50,6 +50,13 @@ by the ``tls-authz`` and ``sasl-authz`` options.
 The ``pretty=on|off`` switch has no effect for HMP monitors and
 its use is rejected.
 
+``-drive file=json:{...{'driver':'file'}}`` (removed 6.0)
+'''''''''''''''''''''''''''''''''''''''''''''''''''''''''
+
+The 'file' driver for drives is no longer appropriate for character or host
+devices and will only accept regular files (S_IFREG). The correct driver
+for these file types is 'host_cdrom' or 'host_device' as appropriate.
+
 QEMU Machine Protocol (QMP) commands
 ------------------------------------
 
diff --git a/tests/qemu-iotests/226.out b/tests/qemu-iotests/226.out
index 42be973ff2..55504d29c4 100644
--- a/tests/qemu-iotests/226.out
+++ b/tests/qemu-iotests/226.out
@@ -3,23 +3,23 @@ QA output created by 226
 === Testing with driver:file ===
 
 == Testing RO ==
-qemu-io: can't open: A regular file was expected by the 'file' driver, but 
something else was given
-qemu-io: warning: Opening a character device as a file using the 'file' driver 
is deprecated
+qemu-io: can't open: 'file' driver requires 'TEST_DIR/t.IMGFMT' to be a 
regular file
+qemu-io: can't open: 'file' driver requires '/dev/null' to be a regular file
 == Testing RW ==
 qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory
-qemu-io: warning: Opening a character device as a file using the 'file' driver 
is deprecated
+qemu-io: can't open: 'file' driver requires '/dev/null' to be a regular file
 
 === Testing with driver:host_device ===
 
 == Testing RO ==
-qemu-io: can't open: 'host_device' driver expects either a character or block 
device
+qemu-io: can't open: 'host_device' driver requires 'TEST_DIR/t.IMGFMT' to be 
either a character or block device
 == Testing RW ==
 qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory
 
 === Testing with driver:host_cdrom ===
 
 == Testing RO ==
-qemu-io: can't open: 'host_cdrom' driver expects either a character or block 
device
+qemu-io: can't open: 'host_cdrom' driver requires 'TEST_DIR/t.IMGFMT' to be 
either a character or block device
 == Testing RW ==
 qemu-io: can't open: Could not open 'TEST_DIR/t.IMGFMT': Is a directory
 
-- 
2.30.2