Re: [libvirt] [PATCH v3 08/14] qemu: Extend qemu_conf with tpm-emulator support

Extend qemu_conf with user and group for running the tpm-emulator and add directories to the configuration for the locations of the log, state, and socket of the tpm-emulator. Signed-off-by: Stefan Berger <stefanb(a)linux.vnet.ibm.com&gt; --- src/qemu/libvirtd_qemu.aug | 5 +++++ src/qemu/qemu.conf | 8 +++++++ src/qemu/qemu_conf.c | 43 ++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_conf.h | 6 ++++++ src/qemu/test_libvirtd_qemu.aug.in | 2 ++ 5 files changed, 64 insertions(+)

diff --git a/src/qemu/libvirtd_qemu.aug b/src/qemu/libvirtd_qemu.aug index c19bf3a..23bfe67 100644 --- a/src/qemu/libvirtd_qemu.aug +++ b/src/qemu/libvirtd_qemu.aug @@ -118,6 +118,9 @@ module Libvirtd_qemu = let vxhs_entry = bool_entry "vxhs_tls" | str_entry "vxhs_tls_x509_cert_dir" + let swtpm_user_entry = str_entry "swtpm_user" + let swtpm_group_entry = str_entry "swtpm_group" + (* Each entry in the config is one of the following ... *) let entry = default_tls_entry | vnc_entry @@ -137,6 +140,8 @@ module Libvirtd_qemu = | gluster_debug_level_entry | memory_entry | vxhs_entry + | swtpm_user_entry + | swtpm_group_entry let comment = [ label "#comment" . del /#[ \t]*/ "# " . store /([^ \t\n][^\n]*)?/ . del /\n/ "\n" ] let empty = [ label "#empty" . eol ] diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf index 3444185..26a6dc7 100644 --- a/src/qemu/qemu.conf +++ b/src/qemu/qemu.conf @@ -779,3 +779,11 @@ # This directory is used for memoryBacking source if configured as file. # NOTE: big files will be stored here #memory_backing_dir = "/var/lib/libvirt/qemu/ram" + +# User for the swtpm TPM Emulator +# +# Default is 'tss'; this is the same user that tcsd (TrouSerS) installs +# and uses; alternative is 'root' +# +#swtpm_user = "tss" +#swtpm_group = "tss" diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index bfbb572..99c37c6 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -159,6 +159,10 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged) "%s/log/libvirt/qemu", LOCALSTATEDIR) < 0) goto error; + if (virAsprintf(&cfg->swtpmLogDir, + "%s/log/swtpm/libvirt/qemu", LOCALSTATEDIR) < 0) + goto error; + if (VIR_STRDUP(cfg->configBaseDir, SYSCONFDIR "/libvirt") < 0) goto error; @@ -166,6 +170,10 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged) "%s/run/libvirt/qemu", LOCALSTATEDIR) < 0) goto error; + if (virAsprintf(&cfg->swtpmStateDir, + "%s/run/libvirt/qemu/swtpm", LOCALSTATEDIR) < 0) + goto error; + if (virAsprintf(&cfg->cacheDir, "%s/cache/libvirt/qemu", LOCALSTATEDIR) < 0) goto error; @@ -186,6 +194,13 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged) goto error; if (virAsprintf(&cfg->memoryBackingDir, "%s/ram", cfg->libDir) < 0) goto error; + if (virAsprintf(&cfg->swtpmStorageDir, "%s/lib/libvirt/swtpm", + LOCALSTATEDIR) < 0) + goto error; + if (virGetUserID("tss", &cfg->swtpm_user) < 0) + cfg->swtpm_user = 0; /* fall back to root */ + if (virGetGroupID("tss", &cfg->swtpm_group) < 0) + cfg->swtpm_group = 0; /* fall back to root */ } else { char *rundir; char *cachedir; @@ -199,6 +214,11 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged) VIR_FREE(cachedir); goto error; } + if (virAsprintf(&cfg->swtpmLogDir, + "%s/qemu/log", cachedir) < 0) {

+ VIR_FREE(cachedir); + goto error; + } if (virAsprintf(&cfg->cacheDir, "%s/qemu/cache", cachedir) < 0) { VIR_FREE(cachedir); goto error; @@ -214,6 +234,9 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged) } VIR_FREE(rundir); + if (virAsprintf(&cfg->swtpmStateDir, "%s/swtpm", cfg->stateDir) < 0) + goto error; +

if (!(cfg->configBaseDir = virGetUserConfigDirectory())) goto error; @@ -233,6 +256,10 @@ virQEMUDriverConfigPtr virQEMUDriverConfigNew(bool privileged) goto error; if (virAsprintf(&cfg->memoryBackingDir, "%s/qemu/ram", cfg->configBaseDir) < 0) goto error; + if (virAsprintf(&cfg->swtpmStorageDir, "%s/qemu/swtpm", cfg->configBaseDir) < 0) + goto error;

+ cfg->swtpm_user = -1; + cfg->swtpm_group = -1;

} if (virAsprintf(&cfg->configDir, "%s/qemu", cfg->configBaseDir) < 0) @@ -351,7 +378,9 @@ static void virQEMUDriverConfigDispose(void *obj) VIR_FREE(cfg->configDir); VIR_FREE(cfg->autostartDir); VIR_FREE(cfg->logDir); + VIR_FREE(cfg->swtpmLogDir); VIR_FREE(cfg->stateDir); + VIR_FREE(cfg->swtpmStateDir); VIR_FREE(cfg->libDir); VIR_FREE(cfg->cacheDir); @@ -400,6 +429,7 @@ static void virQEMUDriverConfigDispose(void *obj) virFirmwareFreeList(cfg->firmwares, cfg->nfirmwares); VIR_FREE(cfg->memoryBackingDir); + VIR_FREE(cfg->swtpmStorageDir); } @@ -471,6 +501,7 @@ int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg, size_t i, j; char *stdioHandler = NULL; char *user = NULL, *group = NULL; + char *swtpm_user = NULL, *swtpm_group = NULL; char **controllers = NULL; char **hugetlbfs = NULL; char **nvram = NULL; @@ -907,6 +938,16 @@ int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg, if (virConfGetValueString(conf, "memory_backing_dir", &cfg->memoryBackingDir) < 0) goto cleanup; + if (virConfGetValueString(conf, "swtpm_user", &swtpm_user) < 0) + goto cleanup; + if (swtpm_user && virGetUserID(swtpm_user, &cfg->swtpm_user) < 0) + goto cleanup; + + if (virConfGetValueString(conf, "swtpm_group", &swtpm_group) < 0) + goto cleanup; + if (swtpm_group && virGetGroupID(swtpm_group, &cfg->swtpm_group) < 0) + goto cleanup; + ret = 0; cleanup: @@ -917,6 +958,8 @@ int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg, VIR_FREE(corestr); VIR_FREE(user); VIR_FREE(group); + VIR_FREE(swtpm_user); + VIR_FREE(swtpm_group); virConfFree(conf); return ret; } diff --git a/src/qemu/qemu_conf.h b/src/qemu/qemu_conf.h index e1ad546..19dc0bc 100644 --- a/src/qemu/qemu_conf.h +++ b/src/qemu/qemu_conf.h @@ -102,7 +102,9 @@ struct _virQEMUDriverConfig { char *configDir; char *autostartDir; char *logDir; + char *swtpmLogDir; char *stateDir; + char *swtpmStateDir; /* These two directories are ones QEMU processes use (so must match * the QEMU user/group */ char *libDir; @@ -111,6 +113,7 @@ struct _virQEMUDriverConfig { char *snapshotDir; char *channelTargetDir; char *nvramDir; + char *swtpmStorageDir; char *defaultTLSx509certdir; bool checkdefaultTLSx509certdir; @@ -206,6 +209,9 @@ struct _virQEMUDriverConfig { bool vxhsTLS; char *vxhsTLSx509certdir; + + uid_t swtpm_user; + gid_t swtpm_group; }; /* Main driver state */ diff --git a/src/qemu/test_libvirtd_qemu.aug.in b/src/qemu/test_libvirtd_qemu.aug.in index 688e5b9..6d6e1d4 100644 --- a/src/qemu/test_libvirtd_qemu.aug.in +++ b/src/qemu/test_libvirtd_qemu.aug.in @@ -100,3 +100,5 @@ module Test_libvirtd_qemu = { "1" = "mount" } } { "memory_backing_dir" = "/var/lib/libvirt/qemu/ram" } +{ "swtpm_user" = "tss" } +{ "swtpm_group" = "tss" }