[libvirt] [PATCH 1 of 2] Add virCgroupAllowMajor()

This interface provides a way to allow an entire major device type diff -r 388beff59a32 -r 48a9209668ab src/cgroup.c --- a/src/cgroup.c Wed Oct 15 10:33:01 2008 +0000 +++ b/src/cgroup.c Thu Oct 16 14:01:13 2008 -0700 @@ -761,6 +761,36 @@ return rc; } +/** + * virCgroupAllowDeviceMajor: + * + * @group: The cgroup to allow an entire device major type for + * @type: The device type (i.e., 'c' or 'b') + * @major: The major number of the device type + * + * Returns: 0 on success + */ +int virCgroupAllowDeviceMajor(virCgroupPtr group, + char type, + int major) +{ + int rc; + char *devstr = NULL; + + if (asprintf(&devstr, "%c %i:* rwm", type, major) == -1) { + rc = -ENOMEM; + goto out; + } + + rc = virCgroupSetValueStr(group, + "devices.allow", + devstr); + out: + VIR_FREE(devstr); + + return rc; +} + int virCgroupSetCpuShares(virCgroupPtr group, unsigned long shares) { return virCgroupSetValueU64(group, "cpu.shares", (uint64_t)shares); diff -r 388beff59a32 -r 48a9209668ab src/cgroup.h --- a/src/cgroup.h Wed Oct 15 10:33:01 2008 +0000 +++ b/src/cgroup.h Thu Oct 16 14:01:13 2008 -0700 @@ -35,6 +35,9 @@ char type, int major, int minor); +int virCgroupAllowDeviceMajor(virCgroupPtr group, + char type, + int major); int virCgroupSetCpuShares(virCgroupPtr group, unsigned long shares); int virCgroupGetCpuShares(virCgroupPtr group, unsigned long *shares);