Re: [libvirt] [PATCH v3 12/12] LXC: introduce virLXCControllerChown

use virLXCControllerChown to make codes clearer. Signed-off-by: Gao feng <gaofeng(a)cn.fujitsu.com&gt; --- src/lxc/lxc_controller.c | 81 ++++++++++++++++++------------------------------ 1 file changed, 31 insertions(+), 50 deletions(-) diff --git a/src/lxc/lxc_controller.c b/src/lxc/lxc_controller.c index 7d27135..1cceecf 100644 --- a/src/lxc/lxc_controller.c +++ b/src/lxc/lxc_controller.c @@ -1121,6 +1121,29 @@ cleanup2: return rc; } +static int +virLXCControllerChown(virLXCControllerPtr ctrl, + char *path) +{ + uid_t uid = -1; + gid_t gid = -1; + + if (!ctrl->def->idmap.uidmap) + return 0; + + uid = ctrl->def->idmap.uidmap[0].target; + gid = ctrl->def->idmap.gidmap[0].target; + + if (chown(path, uid, gid) < 0) { + virReportSystemError(errno, + _("Failed to change owner of %s to %u:%u"), + path, uid, gid); + return -1; + } + + return 0; +}

+ static int virLXCControllerSetupUsernsMap(virDomainIdMapEntryPtr map, @@ -1260,8 +1283,6 @@ static int virLXCControllerPopulateDevices(virLXCControllerPtr ctrl) size_t i; int ret = -1; char *path = NULL; - uid_t uid = (uid_t)-1; - gid_t gid = (gid_t)-1; const struct { int maj; int min; @@ -1278,11 +1299,6 @@ static int virLXCControllerPopulateDevices(virLXCControllerPtr ctrl) if (virLXCControllerSetupDev(ctrl) < 0) goto out; - if (ctrl->def->idmap.uidmap) { - uid = ctrl->def->idmap.uidmap[0].target; - gid = ctrl->def->idmap.gidmap[0].target; - } - /* Populate /dev/ with a few important bits */ for (i = 0 ; i < ARRAY_CARDINALITY(devs) ; i++) { if (virAsprintf(&path, "/%s/%s.dev/%s", @@ -1301,12 +1317,9 @@ static int virLXCControllerPopulateDevices(virLXCControllerPtr ctrl) goto out; } - if (chown(path, uid, gid) < 0) { - virReportSystemError(errno, - _("Failed to change owner of %s to %u:%u"), - devs[i].path, uid, gid); + if (virLXCControllerChown(ctrl, path) < 0) goto out; - } + VIR_FREE(path); } @@ -1506,15 +1519,8 @@ virLXCControllerSetupDevPTS(virLXCControllerPtr ctrl) char *opts = NULL; char *devpts = NULL; char *path = NULL; - uid_t uid = (uid_t)-1; - gid_t gid = (gid_t)-1; int ret = -1; - if (ctrl->def->idmap.uidmap) { - uid = ctrl->def->idmap.uidmap[0].target; - gid = ctrl->def->idmap.gidmap[0].target; - } - VIR_DEBUG("Setting up private /dev/pts"); mount_options = virSecurityManagerGetMountOptions(ctrl->securityManager, @@ -1558,20 +1564,11 @@ virLXCControllerSetupDevPTS(virLXCControllerPtr ctrl) goto cleanup; } - if (chown(ctrl->devptmx, uid, gid) < 0) { - virReportSystemError(errno, - _("Failed to change the owner of" - "%s to %u:%u"), - path, uid, gid); + if (virLXCControllerChown(ctrl, ctrl->devptmx) < 0) goto cleanup; - } - if (chown(devpts, uid, gid) < 0) { - virReportSystemError(errno, - _("Failed to change the owner of" - "%s to %u:%u"), - devpts, uid, gid); + + if (virLXCControllerChown(ctrl, devpts) < 0) goto cleanup; - } if (access(ctrl->devptmx, W_OK) < 0) { if (virAsprintf(&path, "/%s/%s.dev/ptmx", @@ -1586,13 +1583,8 @@ virLXCControllerSetupDevPTS(virLXCControllerPtr ctrl) virReportSystemError(errno, _("Failed to make device %s"), path); goto cleanup; } - if (chown(path, uid, gid) < 0) { - virReportSystemError(errno, - _("Failed to change the owner of" - "%s to %u:%u"), - path, uid, gid); + if (virLXCControllerChown(ctrl, path) < 0) goto cleanup; - } } @@ -1619,15 +1611,8 @@ virLXCControllerSetupConsoles(virLXCControllerPtr ctrl, { size_t i; int ret = -1; - uid_t uid = (uid_t)-1; - gid_t gid = (gid_t)-1; char *ttyHostPath = NULL; - if (ctrl->def->idmap.uidmap) { - uid = ctrl->def->idmap.uidmap[0].target; - gid = ctrl->def->idmap.gidmap[0].target; - } - for (i = 0; i < ctrl->nconsoles; i++) { VIR_DEBUG("Opening tty on private %s", ctrl->devptmx); if (lxcCreateTty(ctrl, @@ -1639,13 +1624,9 @@ virLXCControllerSetupConsoles(virLXCControllerPtr ctrl, } /* Change the owner of tty device to the root user of container */ - if (chown(ttyHostPath, uid, gid) < 0) { - virReportSystemError(errno, - _("Failed to change owner of tty" - " %s to %u:%u"), - ttyHostPath, uid, gid); + if (virLXCControllerChown(ctrl, ttyHostPath) < 0) goto out; - } + VIR_FREE(ttyHostPath); }