[PATCH v2 0/4] Disable unsupported features on iOS hosts

[PATCH v2 0/4] Disable unsupported features on iOS hosts

[Joelle van Dyne]

These patches disables code that cannot be compiled or run on iOS by adding
feature/header detection at configure time.

v2:

* Broken merge where config_host['CONFIG_SMBD_COMMAND'] was duplicated.

-j

Joelle van Dyne (4):
  block: feature detection for host block support
  block: check for sys/disk.h
  block: detect DKIOCGETBLOCKCOUNT/SIZE before use
  slirp: feature detection for smbd

 configure            | 26 +++++++++++++++++++---
 meson.build          |  9 ++++++--
 qapi/block-core.json | 10 ++++++---
 block.c              |  2 +-
 block/file-posix.c   | 51 +++++++++++++++++++++++++-------------------
 net/slirp.c          | 16 +++++++-------
 6 files changed, 75 insertions(+), 39 deletions(-)

-- 
2.28.0

[PATCH v2 1/4] block: feature detection for host block support

[Joelle van Dyne]

On Darwin (iOS), there are no system level APIs for directly accessing
host block devices. We detect this at configure time.

Signed-off-by: Joelle van Dyne <j@getutm.app>
---
 meson.build          |  6 +++++-
 qapi/block-core.json | 10 +++++++---
 block/file-posix.c   | 33 ++++++++++++++++++++++-----------
 3 files changed, 34 insertions(+), 15 deletions(-)

diff --git a/meson.build b/meson.build
index 81d760d6e8..0e53876f69 100644
--- a/meson.build
+++ b/meson.build
@@ -181,7 +181,7 @@ if targetos == 'windows'
                                       include_directories: include_directories('.'))
 elif targetos == 'darwin'
   coref = dependency('appleframeworks', modules: 'CoreFoundation')
-  iokit = dependency('appleframeworks', modules: 'IOKit')
+  iokit = dependency('appleframeworks', modules: 'IOKit', required: false)
 elif targetos == 'sunos'
   socket = [cc.find_library('socket'),
             cc.find_library('nsl'),
@@ -1056,6 +1056,9 @@ if get_option('cfi')
   add_global_link_arguments(cfi_flags, native: false, language: ['c', 'cpp', 'objc'])
 endif
 
+have_host_block_device = (targetos != 'darwin' or
+    cc.has_header('IOKit/storage/IOMedia.h'))
+
 #################
 # config-host.h #
 #################
@@ -1149,6 +1152,7 @@ config_host_data.set('HAVE_PTY_H', cc.has_header('pty.h'))
 config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h'))
 config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h'))
 config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include <stdlib.h>'))
+config_host_data.set('HAVE_HOST_BLOCK_DEVICE', have_host_block_device)
 
 config_host_data.set('CONFIG_PREADV', cc.has_function('preadv', prefix: '#include <sys/uio.h>'))
 
diff --git a/qapi/block-core.json b/qapi/block-core.json
index 9f555d5c1d..0c2cd9e689 100644
--- a/qapi/block-core.json
+++ b/qapi/block-core.json
@@ -959,7 +959,8 @@
   'discriminator': 'driver',
   'data': {
       'file': 'BlockStatsSpecificFile',
-      'host_device': 'BlockStatsSpecificFile',
+      'host_device': { 'type': 'BlockStatsSpecificFile',
+                       'if': 'defined(HAVE_HOST_BLOCK_DEVICE)' },
       'nvme': 'BlockStatsSpecificNvme' } }
 
 ##
@@ -2863,7 +2864,9 @@
 { 'enum': 'BlockdevDriver',
   'data': [ 'blkdebug', 'blklogwrites', 'blkreplay', 'blkverify', 'bochs',
             'cloop', 'compress', 'copy-on-read', 'dmg', 'file', 'ftp', 'ftps',
-            'gluster', 'host_cdrom', 'host_device', 'http', 'https', 'iscsi',
+            'gluster', 'host_cdrom',
+            {'name': 'host_device', 'if': 'defined(HAVE_HOST_BLOCK_DEVICE)' },
+            'http', 'https', 'iscsi',
             'luks', 'nbd', 'nfs', 'null-aio', 'null-co', 'nvme', 'parallels',
             'preallocate', 'qcow', 'qcow2', 'qed', 'quorum', 'raw', 'rbd',
             { 'name': 'replication', 'if': 'defined(CONFIG_REPLICATION)' },
@@ -4066,7 +4069,8 @@
       'ftps':       'BlockdevOptionsCurlFtps',
       'gluster':    'BlockdevOptionsGluster',
       'host_cdrom': 'BlockdevOptionsFile',
-      'host_device':'BlockdevOptionsFile',
+      'host_device': { 'type': 'BlockdevOptionsFile',
+                       'if': 'defined(HAVE_HOST_BLOCK_DEVICE)' },
       'http':       'BlockdevOptionsCurlHttp',
       'https':      'BlockdevOptionsCurlHttps',
       'iscsi':      'BlockdevOptionsIscsi',
diff --git a/block/file-posix.c b/block/file-posix.c
index 05079b40ca..d1ab3180ff 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -42,6 +42,8 @@
 #include "scsi/constants.h"
 
 #if defined(__APPLE__) && (__MACH__)
+#include <sys/ioctl.h>
+#if defined(HAVE_HOST_BLOCK_DEVICE)
 #include <paths.h>
 #include <sys/param.h>
 #include <IOKit/IOKitLib.h>
@@ -52,6 +54,7 @@
 //#include <IOKit/storage/IOCDTypes.h>
 #include <IOKit/storage/IODVDMedia.h>
 #include <CoreFoundation/CoreFoundation.h>
+#endif /* defined(HAVE_HOST_BLOCK_DEVICE) */
 #endif
 
 #ifdef __sun__
@@ -181,7 +184,17 @@ typedef struct BDRVRawReopenState {
     bool check_cache_dropped;
 } BDRVRawReopenState;
 
-static int fd_open(BlockDriverState *bs);
+static int fd_open(BlockDriverState *bs)
+{
+    BDRVRawState *s = bs->opaque;
+
+    /* this is just to ensure s->fd is sane (its called by io ops) */
+    if (s->fd >= 0) {
+        return 0;
+    }
+    return -EIO;
+}
+
 static int64_t raw_getlength(BlockDriverState *bs);
 
 typedef struct RawPosixAIOData {
@@ -3032,6 +3045,7 @@ static BlockStatsSpecific *raw_get_specific_stats(BlockDriverState *bs)
     return stats;
 }
 
+#if defined(HAVE_HOST_BLOCK_DEVICE)
 static BlockStatsSpecific *hdev_get_specific_stats(BlockDriverState *bs)
 {
     BlockStatsSpecific *stats = g_new(BlockStatsSpecific, 1);
@@ -3041,6 +3055,7 @@ static BlockStatsSpecific *hdev_get_specific_stats(BlockDriverState *bs)
 
     return stats;
 }
+#endif /* HAVE_HOST_BLOCK_DEVICE */
 
 static QemuOptsList raw_create_opts = {
     .name = "raw-create-opts",
@@ -3265,6 +3280,8 @@ BlockDriver bdrv_file = {
 /***********************************************/
 /* host device */
 
+#if defined(HAVE_HOST_BLOCK_DEVICE)
+
 #if defined(__APPLE__) && defined(__MACH__)
 static kern_return_t GetBSDPath(io_iterator_t mediaIterator, char *bsdPath,
                                 CFIndex maxPathSize, int flags);
@@ -3557,16 +3574,6 @@ hdev_co_ioctl(BlockDriverState *bs, unsigned long int req, void *buf)
 }
 #endif /* linux */
 
-static int fd_open(BlockDriverState *bs)
-{
-    BDRVRawState *s = bs->opaque;
-
-    /* this is just to ensure s->fd is sane (its called by io ops) */
-    if (s->fd >= 0)
-        return 0;
-    return -EIO;
-}
-
 static coroutine_fn int
 hdev_co_pdiscard(BlockDriverState *bs, int64_t offset, int bytes)
 {
@@ -3890,6 +3897,8 @@ static BlockDriver bdrv_host_cdrom = {
 };
 #endif /* __FreeBSD__ */
 
+#endif /* HAVE_HOST_BLOCK_DEVICE */
+
 static void bdrv_file_init(void)
 {
     /*
@@ -3897,6 +3906,7 @@ static void bdrv_file_init(void)
      * registered last will get probed first.
      */
     bdrv_register(&bdrv_file);
+#if defined(HAVE_HOST_BLOCK_DEVICE)
     bdrv_register(&bdrv_host_device);
 #ifdef __linux__
     bdrv_register(&bdrv_host_cdrom);
@@ -3904,6 +3914,7 @@ static void bdrv_file_init(void)
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
     bdrv_register(&bdrv_host_cdrom);
 #endif
+#endif /* HAVE_HOST_BLOCK_DEVICE */
 }
 
 block_init(bdrv_file_init);
-- 
2.28.0

[PATCH v2 2/4] block: check for sys/disk.h

[Joelle van Dyne]

Some BSD platforms do not have this header.

Signed-off-by: Joelle van Dyne <j@getutm.app>
---
 meson.build | 1 +
 block.c     | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 0e53876f69..ba0db9fa1f 100644
--- a/meson.build
+++ b/meson.build
@@ -1153,6 +1153,7 @@ config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h'))
 config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h'))
 config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include <stdlib.h>'))
 config_host_data.set('HAVE_HOST_BLOCK_DEVICE', have_host_block_device)
+config_host_data.set('HAVE_SYS_DISK_H', cc.has_header('sys/disk.h'))
 
 config_host_data.set('CONFIG_PREADV', cc.has_function('preadv', prefix: '#include <sys/uio.h>'))
 
diff --git a/block.c b/block.c
index a1f3cecd75..b2705ad225 100644
--- a/block.c
+++ b/block.c
@@ -54,7 +54,7 @@
 #ifdef CONFIG_BSD
 #include <sys/ioctl.h>
 #include <sys/queue.h>
-#ifndef __DragonFly__
+#if defined(HAVE_SYS_DISK_H)
 #include <sys/disk.h>
 #endif
 #endif
-- 
2.28.0

[PATCH v2 3/4] block: detect DKIOCGETBLOCKCOUNT/SIZE before use

[Joelle van Dyne]

iOS hosts do not have these defined so we fallback to the
default behaviour.

Co-authored-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Joelle van Dyne <j@getutm.app>
---
 block/file-posix.c | 18 +++++++-----------
 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/block/file-posix.c b/block/file-posix.c
index d1ab3180ff..9b6d7ddda3 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -2326,8 +2326,10 @@ static int64_t raw_getlength(BlockDriverState *bs)
 again:
 #endif
     if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
+        size = 0;
 #ifdef DIOCGMEDIASIZE
         if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
+            size = 0;
 #elif defined(DIOCGPART)
         {
                 struct partinfo pi;
@@ -2336,9 +2338,7 @@ again:
                 else
                         size = 0;
         }
-        if (size == 0)
-#endif
-#if defined(__APPLE__) && defined(__MACH__)
+#elif defined(DKIOCGETBLOCKCOUNT) && defined(DKIOCGETBLOCKSIZE)
         {
             uint64_t sectors = 0;
             uint32_t sector_size = 0;
@@ -2346,19 +2346,15 @@ again:
             if (ioctl(fd, DKIOCGETBLOCKCOUNT, &sectors) == 0
                && ioctl(fd, DKIOCGETBLOCKSIZE, &sector_size) == 0) {
                 size = sectors * sector_size;
-            } else {
-                size = lseek(fd, 0LL, SEEK_END);
-                if (size < 0) {
-                    return -errno;
-                }
             }
         }
-#else
-        size = lseek(fd, 0LL, SEEK_END);
+#endif
+        if (size == 0) {
+            size = lseek(fd, 0LL, SEEK_END);
+        }
         if (size < 0) {
             return -errno;
         }
-#endif
 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
         switch(s->type) {
         case FTYPE_CD:
-- 
2.28.0

[PATCH v2 4/4] slirp: feature detection for smbd

[Joelle van Dyne]

Replace Windows specific macro with a more generic feature detection
macro. Allows slirp smb feature to be disabled manually as well.

Signed-off-by: Joelle van Dyne <j@getutm.app>
---
 configure   | 26 +++++++++++++++++++++++---
 meson.build |  2 +-
 net/slirp.c | 16 ++++++++--------
 3 files changed, 32 insertions(+), 12 deletions(-)

diff --git a/configure b/configure
index 34fccaa2ba..8335a3e6a0 100755
--- a/configure
+++ b/configure
@@ -465,6 +465,7 @@ fuse_lseek="auto"
 multiprocess="auto"
 
 malloc_trim="auto"
+slirp_smbd="auto"
 
 # parse CC options second
 for opt do
@@ -834,8 +835,6 @@ do
     fi
 done
 
-: ${smbd=${SMBD-/usr/sbin/smbd}}
-
 # Default objcc to clang if available, otherwise use CC
 if has clang; then
   objcc=clang
@@ -1560,6 +1559,10 @@ for opt do
   ;;
   --disable-multiprocess) multiprocess="disabled"
   ;;
+  --enable-slirp-smbd) slirp_smbd=yes
+  ;;
+  --disable-slirp-smbd) slirp_smbd=no
+  ;;
   *)
       echo "ERROR: unknown option $opt"
       echo "Try '$0 --help' for more information"
@@ -1913,6 +1916,7 @@ disabled with --disable-FEATURE, default is enabled if available
   fuse            FUSE block device export
   fuse-lseek      SEEK_HOLE/SEEK_DATA support for FUSE exports
   multiprocess    Out of process device emulation support
+  slirp-smbd      use smbd (at path --smbd=*) in slirp networking
 
 NOTE: The object files are built at the place where configure is launched
 EOF
@@ -5252,6 +5256,19 @@ case "$slirp" in
     ;;
 esac
 
+# Check for slirp smbd dupport
+: ${smbd=${SMBD-/usr/sbin/smbd}}
+if test "$slirp_smbd" != "no" ; then
+  if test "$mingw32" = "yes" ; then
+    if test "$slirp_smbd" = "yes" ; then
+      error_exit "Host smbd not supported on this platform."
+    fi
+    slirp_smbd=no
+  else
+    slirp_smbd=yes
+  fi
+fi
+
 ##########################################
 # check for usable __NR_keyctl syscall
 
@@ -5527,7 +5544,10 @@ fi
 if test "$guest_agent" = "yes" ; then
   echo "CONFIG_GUEST_AGENT=y" >> $config_host_mak
 fi
-echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
+if test "$slirp_smbd" = "yes" ; then
+  echo "CONFIG_SLIRP_SMBD=y" >> $config_host_mak
+  echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
+fi
 if test "$vde" = "yes" ; then
   echo "CONFIG_VDE=y" >> $config_host_mak
   echo "VDE_LIBS=$vde_libs" >> $config_host_mak
diff --git a/meson.build b/meson.build
index ba0db9fa1f..cad70a8fc5 100644
--- a/meson.build
+++ b/meson.build
@@ -2424,7 +2424,7 @@ summary_info += {'genisoimage':       config_host['GENISOIMAGE']}
 if targetos == 'windows' and config_host.has_key('CONFIG_GUEST_AGENT')
   summary_info += {'wixl':            wixl.found() ? wixl.full_path() : false}
 endif
-if slirp_opt != 'disabled'
+if slirp_opt != 'disabled' and 'CONFIG_SLIRP_SMBD' in config_host
   summary_info += {'smbd':            config_host['CONFIG_SMBD_COMMAND']}
 endif
 summary(summary_info, bool_yn: true, section: 'Host binaries')
diff --git a/net/slirp.c b/net/slirp.c
index be914c0be0..b3ded2aac1 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -27,7 +27,7 @@
 #include "net/slirp.h"
 
 
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
 #include <pwd.h>
 #include <sys/wait.h>
 #endif
@@ -90,7 +90,7 @@ typedef struct SlirpState {
     Slirp *slirp;
     Notifier poll_notifier;
     Notifier exit_notifier;
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
     gchar *smb_dir;
 #endif
     GSList *fwd;
@@ -103,7 +103,7 @@ static QTAILQ_HEAD(, SlirpState) slirp_stacks =
 static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp);
 static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp);
 
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
 static int slirp_smb(SlirpState *s, const char *exported_dir,
                      struct in_addr vserver_addr, Error **errp);
 static void slirp_smb_cleanup(SlirpState *s);
@@ -367,7 +367,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
     struct in6_addr ip6_prefix;
     struct in6_addr ip6_host;
     struct in6_addr ip6_dns;
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
     struct in_addr smbsrv = { .s_addr = 0 };
 #endif
     NetClientState *nc;
@@ -477,7 +477,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
         return -1;
     }
 
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
     if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
         error_setg(errp, "Failed to parse SMB address");
         return -1;
@@ -592,7 +592,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
             }
         }
     }
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
     if (smb_export) {
         if (slirp_smb(s, smb_export, smbsrv, errp) < 0) {
             goto error;
@@ -784,7 +784,7 @@ void hmp_hostfwd_add(Monitor *mon, const QDict *qdict)
 
 }
 
-#ifndef _WIN32
+#if defined(CONFIG_SLIRP_SMBD)
 
 /* automatic user mode samba server configuration */
 static void slirp_smb_cleanup(SlirpState *s)
@@ -899,7 +899,7 @@ static int slirp_smb(SlirpState* s, const char *exported_dir,
     return 0;
 }
 
-#endif /* !defined(_WIN32) */
+#endif /* defined(CONFIG_SLIRP_SMBD) */
 
 static int guestfwd_can_read(void *opaque)
 {
-- 
2.28.0

Re: [PATCH v2 4/4] slirp: feature detection for smbd

[Peter Maydell]

On Tue, 9 Mar 2021 at 00:30, Joelle van Dyne <j@getutm.app> wrote:
>
> Replace Windows specific macro with a more generic feature detection
> macro. Allows slirp smb feature to be disabled manually as well.
>
> Signed-off-by: Joelle van Dyne <j@getutm.app>
> ---
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM

Re: [PATCH v2 2/4] block: check for sys/disk.h

[Peter Maydell]

On Tue, 9 Mar 2021 at 00:31, Joelle van Dyne <j@getutm.app> wrote:
>
> Some BSD platforms do not have this header.
>
> Signed-off-by: Joelle van Dyne <j@getutm.app>
> ---

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM

Re: [PATCH v2 3/4] block: detect DKIOCGETBLOCKCOUNT/SIZE before use

[Peter Maydell]

On Tue, 9 Mar 2021 at 00:30, Joelle van Dyne <j@getutm.app> wrote:
>
> iOS hosts do not have these defined so we fallback to the
> default behaviour.
>
> Co-authored-by: Warner Losh <imp@bsdimp.com>
> Signed-off-by: Joelle van Dyne <j@getutm.app>
> ---
>  block/file-posix.c | 18 +++++++-----------
>  1 file changed, 7 insertions(+), 11 deletions(-)

raw_getlength() is a bit of a mess; this certainly seems like
an improvement...

> diff --git a/block/file-posix.c b/block/file-posix.c
> index d1ab3180ff..9b6d7ddda3 100644
> --- a/block/file-posix.c
> +++ b/block/file-posix.c
> @@ -2326,8 +2326,10 @@ static int64_t raw_getlength(BlockDriverState *bs)
>  again:
>  #endif
>      if (!fstat(fd, &sb) && (S_IFCHR & sb.st_mode)) {
> +        size = 0;
>  #ifdef DIOCGMEDIASIZE
>          if (ioctl(fd, DIOCGMEDIASIZE, (off_t *)&size))
> +            size = 0;

this if() should have braces {}.

Otherwise
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM

Re: [PATCH v2 2/4] block: check for sys/disk.h

[Philippe Mathieu-Daudé]

On 3/9/21 1:27 AM, Joelle van Dyne wrote:
> Some BSD platforms do not have this header.
> 
> Signed-off-by: Joelle van Dyne <j@getutm.app>
> ---
>  meson.build | 1 +
>  block.c     | 2 +-
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/meson.build b/meson.build
> index 0e53876f69..ba0db9fa1f 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -1153,6 +1153,7 @@ config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h'))
>  config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h'))
>  config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include <stdlib.h>'))
>  config_host_data.set('HAVE_HOST_BLOCK_DEVICE', have_host_block_device)
> +config_host_data.set('HAVE_SYS_DISK_H', cc.has_header('sys/disk.h'))

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

Re: [PATCH v2 4/4] slirp: feature detection for smbd

[Philippe Mathieu-Daudé]

On 3/9/21 1:27 AM, Joelle van Dyne wrote:
> Replace Windows specific macro with a more generic feature detection
> macro. Allows slirp smb feature to be disabled manually as well.
> 
> Signed-off-by: Joelle van Dyne <j@getutm.app>

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

> ---
>  configure   | 26 +++++++++++++++++++++++---
>  meson.build |  2 +-
>  net/slirp.c | 16 ++++++++--------
>  3 files changed, 32 insertions(+), 12 deletions(-)
> 
> diff --git a/configure b/configure
> index 34fccaa2ba..8335a3e6a0 100755
> --- a/configure
> +++ b/configure
> @@ -465,6 +465,7 @@ fuse_lseek="auto"
>  multiprocess="auto"
>  
>  malloc_trim="auto"
> +slirp_smbd="auto"
>  
>  # parse CC options second
>  for opt do
> @@ -834,8 +835,6 @@ do
>      fi
>  done
>  
> -: ${smbd=${SMBD-/usr/sbin/smbd}}
> -
>  # Default objcc to clang if available, otherwise use CC
>  if has clang; then
>    objcc=clang
> @@ -1560,6 +1559,10 @@ for opt do
>    ;;
>    --disable-multiprocess) multiprocess="disabled"
>    ;;
> +  --enable-slirp-smbd) slirp_smbd=yes
> +  ;;
> +  --disable-slirp-smbd) slirp_smbd=no
> +  ;;
>    *)
>        echo "ERROR: unknown option $opt"
>        echo "Try '$0 --help' for more information"
> @@ -1913,6 +1916,7 @@ disabled with --disable-FEATURE, default is enabled if available
>    fuse            FUSE block device export
>    fuse-lseek      SEEK_HOLE/SEEK_DATA support for FUSE exports
>    multiprocess    Out of process device emulation support
> +  slirp-smbd      use smbd (at path --smbd=*) in slirp networking
>  
>  NOTE: The object files are built at the place where configure is launched
>  EOF
> @@ -5252,6 +5256,19 @@ case "$slirp" in
>      ;;
>  esac
>  
> +# Check for slirp smbd dupport
> +: ${smbd=${SMBD-/usr/sbin/smbd}}
> +if test "$slirp_smbd" != "no" ; then
> +  if test "$mingw32" = "yes" ; then
> +    if test "$slirp_smbd" = "yes" ; then
> +      error_exit "Host smbd not supported on this platform."
> +    fi
> +    slirp_smbd=no
> +  else
> +    slirp_smbd=yes
> +  fi
> +fi
> +
>  ##########################################
>  # check for usable __NR_keyctl syscall
>  
> @@ -5527,7 +5544,10 @@ fi
>  if test "$guest_agent" = "yes" ; then
>    echo "CONFIG_GUEST_AGENT=y" >> $config_host_mak
>  fi
> -echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
> +if test "$slirp_smbd" = "yes" ; then
> +  echo "CONFIG_SLIRP_SMBD=y" >> $config_host_mak
> +  echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
> +fi
>  if test "$vde" = "yes" ; then
>    echo "CONFIG_VDE=y" >> $config_host_mak
>    echo "VDE_LIBS=$vde_libs" >> $config_host_mak
> diff --git a/meson.build b/meson.build
> index ba0db9fa1f..cad70a8fc5 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -2424,7 +2424,7 @@ summary_info += {'genisoimage':       config_host['GENISOIMAGE']}
>  if targetos == 'windows' and config_host.has_key('CONFIG_GUEST_AGENT')
>    summary_info += {'wixl':            wixl.found() ? wixl.full_path() : false}
>  endif
> -if slirp_opt != 'disabled'
> +if slirp_opt != 'disabled' and 'CONFIG_SLIRP_SMBD' in config_host
>    summary_info += {'smbd':            config_host['CONFIG_SMBD_COMMAND']}
>  endif
>  summary(summary_info, bool_yn: true, section: 'Host binaries')
> diff --git a/net/slirp.c b/net/slirp.c
> index be914c0be0..b3ded2aac1 100644
> --- a/net/slirp.c
> +++ b/net/slirp.c
> @@ -27,7 +27,7 @@
>  #include "net/slirp.h"
>  
>  
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>  #include <pwd.h>
>  #include <sys/wait.h>
>  #endif
> @@ -90,7 +90,7 @@ typedef struct SlirpState {
>      Slirp *slirp;
>      Notifier poll_notifier;
>      Notifier exit_notifier;
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>      gchar *smb_dir;
>  #endif
>      GSList *fwd;
> @@ -103,7 +103,7 @@ static QTAILQ_HEAD(, SlirpState) slirp_stacks =
>  static int slirp_hostfwd(SlirpState *s, const char *redir_str, Error **errp);
>  static int slirp_guestfwd(SlirpState *s, const char *config_str, Error **errp);
>  
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>  static int slirp_smb(SlirpState *s, const char *exported_dir,
>                       struct in_addr vserver_addr, Error **errp);
>  static void slirp_smb_cleanup(SlirpState *s);
> @@ -367,7 +367,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
>      struct in6_addr ip6_prefix;
>      struct in6_addr ip6_host;
>      struct in6_addr ip6_dns;
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>      struct in_addr smbsrv = { .s_addr = 0 };
>  #endif
>      NetClientState *nc;
> @@ -477,7 +477,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
>          return -1;
>      }
>  
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>      if (vsmbserver && !inet_aton(vsmbserver, &smbsrv)) {
>          error_setg(errp, "Failed to parse SMB address");
>          return -1;
> @@ -592,7 +592,7 @@ static int net_slirp_init(NetClientState *peer, const char *model,
>              }
>          }
>      }
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>      if (smb_export) {
>          if (slirp_smb(s, smb_export, smbsrv, errp) < 0) {
>              goto error;
> @@ -784,7 +784,7 @@ void hmp_hostfwd_add(Monitor *mon, const QDict *qdict)
>  
>  }
>  
> -#ifndef _WIN32
> +#if defined(CONFIG_SLIRP_SMBD)
>  
>  /* automatic user mode samba server configuration */
>  static void slirp_smb_cleanup(SlirpState *s)
> @@ -899,7 +899,7 @@ static int slirp_smb(SlirpState* s, const char *exported_dir,
>      return 0;
>  }
>  
> -#endif /* !defined(_WIN32) */
> +#endif /* defined(CONFIG_SLIRP_SMBD) */
>  
>  static int guestfwd_can_read(void *opaque)
>  {
> 

Re: [PATCH v2 4/4] slirp: feature detection for smbd

[Philippe Mathieu-Daudé]

Hi Joelle,

On 3/9/21 1:27 AM, Joelle van Dyne wrote:
> Replace Windows specific macro with a more generic feature detection
> macro. Allows slirp smb feature to be disabled manually as well.
> 
> Signed-off-by: Joelle van Dyne <j@getutm.app>
> ---
>  configure   | 26 +++++++++++++++++++++++---
>  meson.build |  2 +-
>  net/slirp.c | 16 ++++++++--------
>  3 files changed, 32 insertions(+), 12 deletions(-)

Hmm v1 had: Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
did you change something to not include Samuel A-b tag?

Re: [PATCH v2 4/4] slirp: feature detection for smbd

[Joelle van Dyne]

On Tue, Mar 9, 2021 at 6:09 AM Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
>
> Hi Joelle,
>
> On 3/9/21 1:27 AM, Joelle van Dyne wrote:
> > Replace Windows specific macro with a more generic feature detection
> > macro. Allows slirp smb feature to be disabled manually as well.
> >
> > Signed-off-by: Joelle van Dyne <j@getutm.app>
> > ---
> >  configure   | 26 +++++++++++++++++++++++---
> >  meson.build |  2 +-
> >  net/slirp.c | 16 ++++++++--------
> >  3 files changed, 32 insertions(+), 12 deletions(-)
>
> Hmm v1 had: Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
> did you change something to not include Samuel A-b tag?
>

Sorry, I must have missed it!

-j

Re: [PATCH v2 4/4] slirp: feature detection for smbd

[Samuel Thibault]

Joelle van Dyne, le mar. 09 mars 2021 10:11:31 -0800, a ecrit:
> On Tue, Mar 9, 2021 at 6:09 AM Philippe Mathieu-Daudé <philmd@redhat.com> wrote:
> > On 3/9/21 1:27 AM, Joelle van Dyne wrote:
> > > Replace Windows specific macro with a more generic feature detection
> > > macro. Allows slirp smb feature to be disabled manually as well.
> > >
> > > Signed-off-by: Joelle van Dyne <j@getutm.app>
> > > ---
> > >  configure   | 26 +++++++++++++++++++++++---
> > >  meson.build |  2 +-
> > >  net/slirp.c | 16 ++++++++--------
> > >  3 files changed, 32 insertions(+), 12 deletions(-)
> >
> > Hmm v1 had: Acked-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
> > did you change something to not include Samuel A-b tag?
> 
> Sorry, I must have missed it!

NP :)

Samuel