diff --git a/RELEASES b/RELEASES
index ff4378f1e..bf4fc3d2e 100644
--- a/RELEASES
+++ b/RELEASES
@@ -2,6 +2,7 @@
 # in the form <version> <date>.  If you update the version field (in
 # configure.ac) you must also add the current date to this file.
 
+1.48.5    2022-11-21
 1.48.4    2022-07-06
 1.48.3    2022-05-26
 1.48.2    2022-05-12
diff --git a/configure.ac b/configure.ac
index fed17dbb9..c1f4f9d7f 100644
--- a/configure.ac
+++ b/configure.ac
@@ -20,7 +20,7 @@
 # freeform string.
 m4_define([libguestfs_major],   [1])
 m4_define([libguestfs_minor],   [48])
-m4_define([libguestfs_release], [4])
+m4_define([libguestfs_release], [5])
 
 AC_INIT([libguestfs],libguestfs_major.libguestfs_minor.libguestfs_release)
 
diff --git a/docs/C_SOURCE_FILES b/docs/C_SOURCE_FILES
index da72d3522..d83cdaf93 100644
--- a/docs/C_SOURCE_FILES
+++ b/docs/C_SOURCE_FILES
@@ -31,6 +31,7 @@ common/structs/structs-print.c
 common/structs/structs-print.h
 common/utils/cleanups.c
 common/utils/cleanups.h
+common/utils/environ.c
 common/utils/gnulib-cleanups.c
 common/utils/guestfs-stringlists-utils.h
 common/utils/guestfs-utils.h
diff --git a/po/POTFILES b/po/POTFILES
index 973f53f77..b98d97f23 100644
--- a/po/POTFILES
+++ b/po/POTFILES
@@ -19,6 +19,7 @@ common/qemuopts/qemuopts.c
 common/structs/structs-cleanups.c
 common/structs/structs-print.c
 common/utils/cleanups.c
+common/utils/environ.c
 common/utils/gnulib-cleanups.c
 common/utils/libxml2-cleanups.c
 common/utils/pcre2-cleanups.c
diff --git a/po/libguestfs.pot b/po/libguestfs.pot
index e3d0f3845..c42ac90c0 100644
--- a/po/libguestfs.pot
+++ b/po/libguestfs.pot
@@ -6,10 +6,10 @@
 #, fuzzy
 msgid ""
 msgstr ""
-"Project-Id-Version: libguestfs 1.48.4\n"
+"Project-Id-Version: libguestfs 1.48.5\n"
 "Report-Msgid-Bugs-To: https://bugzilla.redhat.com/enter_bug.cgi?"
 "component=libguestfs&product=Virtualization+Tools\n"
-"POT-Creation-Date: 2022-07-06 13:58+0100\n"
+"POT-Creation-Date: 2022-11-21 18:33+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -23,19 +23,19 @@ msgstr ""
 msgid "%s: line %d: error parsing configuration file: %s"
 msgstr ""
 
-#: common/options/decrypt.c:48
+#: common/options/decrypt.c:52
 #, c-format
 msgid "string size overflow"
 msgstr ""
 
-#: common/options/decrypt.c:166
+#: common/options/decrypt.c:170
 #, c-format
 msgid ""
 "'clevis_luks_unlock', needed for decrypting %s, is unavailable in this "
 "libguestfs version"
 msgstr ""
 
-#: common/options/decrypt.c:180
+#: common/options/decrypt.c:184
 #, c-format
 msgid ""
 "could not find key to open LUKS encrypted %s.\n"
@@ -240,12 +240,12 @@ msgstr ""
 msgid "%s: error: cannot parse xattr count for %s %s\n"
 msgstr ""
 
-#: common/windows/windows.c:142
+#: common/windows/windows.c:139
 #, c-format
 msgid "to use Windows drive letters, this must be a Windows guest"
 msgstr ""
 
-#: common/windows/windows.c:153
+#: common/windows/windows.c:150
 #, c-format
 msgid "drive '%c:' not found."
 msgstr ""
@@ -3908,11 +3908,11 @@ msgid ""
 "might need to log out and log in again)."
 msgstr ""
 
-#: lib/launch-direct.c:395
+#: lib/launch-direct.c:396
 msgid "you must call guestfs_add_drive before guestfs_launch"
 msgstr ""
 
-#: lib/launch-direct.c:934 lib/launch-libvirt.c:713
+#: lib/launch-direct.c:941 lib/launch-libvirt.c:713
 msgid "qemu launched and contacted daemon, but state != READY"
 msgstr ""
 
@@ -4004,7 +4004,7 @@ msgstr ""
 msgid "‘iface’ parameter is not supported by the libvirt backend"
 msgstr ""
 
-#: lib/launch-libvirt.c:1523 lib/launch-libvirt.c:1781 lib/qemu.c:822
+#: lib/launch-libvirt.c:1523 lib/launch-libvirt.c:1781 lib/qemu.c:816
 #, c-format
 msgid "realpath: could not convert ‘%s’ to absolute path"
 msgstr ""
@@ -4045,43 +4045,43 @@ msgstr ""
 msgid "%s: internal error forming error message"
 msgstr ""
 
-#: lib/launch.c:63
+#: lib/launch.c:64
 msgid "the libguestfs handle has already been launched"
 msgstr ""
 
-#: lib/launch.c:76
+#: lib/launch.c:77
 #, c-format
 msgid ""
 "too many drives have been added, the current backend only supports %d drives"
 msgstr ""
 
-#: lib/launch.c:201
+#: lib/launch.c:202
 msgid "get-pid can only be called after launch"
 msgstr ""
 
-#: lib/launch.c:207
+#: lib/launch.c:208
 msgid "the current backend does not support ‘get-pid’"
 msgstr ""
 
-#: lib/launch.c:221
+#: lib/launch.c:222
 msgid "the current backend does not allow max disks to be queried"
 msgstr ""
 
-#: lib/launch.c:235
+#: lib/launch.c:236
 msgid "qemu has not been launched yet"
 msgstr ""
 
-#: lib/launch.c:298
+#: lib/launch.c:299
 #, c-format
 msgid "parameter ‘%s’ isn't allowed"
 msgstr ""
 
-#: lib/launch.c:327
+#: lib/launch.c:328
 #, c-format
 msgid "socket path too long: %s/%s"
 msgstr ""
 
-#: lib/launch.c:331
+#: lib/launch.c:332
 #, c-format
 msgid "%s"
 msgstr ""
@@ -4266,35 +4266,35 @@ msgstr ""
 msgid "file receive cancelled by daemon"
 msgstr ""
 
-#: lib/qemu.c:992
+#: lib/qemu.c:986
 msgid "discard cannot be enabled on this drive: qemu < 1.5"
 msgstr ""
 
-#: lib/qemu.c:1001
+#: lib/qemu.c:995
 msgid ""
 "discard cannot be enabled on this drive: the drive has a read-only overlay"
 msgstr ""
 
-#: lib/qemu.c:1008
+#: lib/qemu.c:1002
 msgid ""
 "discard cannot be enabled on this drive: you have to specify the format of "
 "the file"
 msgstr ""
 
-#: lib/qemu.c:1016
+#: lib/qemu.c:1010
 msgid ""
 "discard cannot be enabled on this drive: qemu < 1.6 cannot do discard on "
 "qcow2 files"
 msgstr ""
 
-#: lib/qemu.c:1024
+#: lib/qemu.c:1018
 #, c-format
 msgid ""
 "discard cannot be enabled on this drive: qemu does not support discard for "
 "‘%s’ format files"
 msgstr ""
 
-#: lib/qemu.c:1047
+#: lib/qemu.c:1041
 #, c-format
 msgid ""
 "discard cannot be enabled on this drive: protocol ‘%s’ does not support "