Re: [Xen-devel] Help on domain creation

[Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>]

> I did run it as root on domain0. The program calls ioctl(,SNDCTL...) and
> denied access. ??????  What does it do with sound device? The error
> returned for xi_phys_grant is "invalid argument".

Things have already gone wrong with the xi_build -- let's solve
that first.

Does /proc/xen exist?

Are you sure you have 98MB of memory free for the new domain?

Thanks,
Ian

 
> Any ideas?
> 
> Here is a more complete log:
> [root@oscan18 root]# id
> uid=0(root) gid=0(root)
> groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel)
> [root@oscan18 root]# xi_create 98304 XenoLinux
> ERROR: Error when executing privileged control ioctl (1 = Operation not
> permitted)
> [root@oscan18 root]# strace xi_create 98304 XenoLinux
> execve("/usr/local/bin/xi_create", ["xi_create", "98304", "XenoLinux"],
> [/* 35 vars */]) = 0
> uname({sys="Linux", node="oscan18", ...}) = 0
> brk(0)                                  = 0x8049b7c
> open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or
> directory)
> open("/etc/ld.so.cache", O_RDONLY)      = 3
> fstat64(3, {st_mode=S_IFREG|0644, st_size=13466, ...}) = 0
> old_mmap(NULL, 13466, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40014000
> close(3)                                = 0
> open("/lib/i686/libc.so.6", O_RDONLY)   = 3
> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`u\1B4\0"...,
> 1024) = 1024
> fstat64(3, {st_mode=S_IFREG|0755, st_size=1401027, ...}) = 0
> old_mmap(0x42000000, 1264928, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0x42000000
> mprotect(0x4212c000, 36128, PROT_NONE)  = 0
> old_mmap(0x4212c000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
> 3, 0x12c000) = 0x4212c000
> old_mmap(0x42131000, 15648, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x42131000
> close(3)                                = 0
> munmap(0x40014000, 13466)               = 0
> brk(0)                                  = 0x8049b7c
> brk(0x8049bac)                          = 0x8049bac
> brk(0x804a000)                          = 0x804a000
> mlock(0xbffff500, 13466)                = 0
> open("/proc/xeno/privcmd", O_RDWR)      = 3
> ioctl(3, SNDCTL_DSP_RESET, 0xbffff4e0)  = -1 EPERM (Operation not
> permitted)
> write(2, "ERROR: Error when executing priv"..., 83ERROR: Error when
> executing privileged control ioctl (1 = Operation not permitted)
> ) = 83
> close(3)                                = 0
> munlock(0xbffff500, 292)                = 0
> _exit(1)                                = ?
> [root@oscan18 root]# strace /usr/local/bin/xi_phys_grant rw 1 768 48258
> 29961162 5
> execve("/usr/local/bin/xi_phys_grant", ["/usr/local/bin/xi_phys_grant",
> "rw", "1", "768", "48258", "29961162", "5"], [/* 35 vars */]) = 0
> uname({sys="Linux", node="oscan18", ...}) = 0
> brk(0)                                  = 0x8049b40
> open("/etc/ld.so.preload", O_RDONLY)    = -1 ENOENT (No such file or
> directory)
> open("/etc/ld.so.cache", O_RDONLY)      = 3
> fstat64(3, {st_mode=S_IFREG|0644, st_size=13466, ...}) = 0
> old_mmap(NULL, 13466, PROT_READ, MAP_PRIVATE, 3, 0) = 0x40014000
> close(3)                                = 0
> open("/lib/i686/libc.so.6", O_RDONLY)   = 3
> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0`u\1B4\0"...,
> 1024) = 1024
> fstat64(3, {st_mode=S_IFREG|0755, st_size=1401027, ...}) = 0
> old_mmap(0x42000000, 1264928, PROT_READ|PROT_EXEC, MAP_PRIVATE, 3, 0) =
> 0x42000000
> mprotect(0x4212c000, 36128, PROT_NONE)  = 0
> old_mmap(0x4212c000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED,
> 3, 0x12c000) = 0x4212c000
> old_mmap(0x42131000, 15648, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x42131000
> close(3)                                = 0
> munmap(0x40014000, 13466)               = 0
> brk(0)                                  = 0x8049b40
> brk(0x8049b70)                          = 0x8049b70
> brk(0x804a000)                          = 0x804a000
> open("/proc/xeno/privcmd", O_RDWR)      = 3
> ioctl(3, SOUND_PCM_READ_RATE, 0x300)    = 4096
> close(3)                                = 0
> open("/proc/xeno/privcmd", O_RDWR)      = 3
> ioctl(3, SNDCTL_DSP_SYNC, 0xbffff610)   = -1 EINVAL (Invalid argument)
> write(2, "ERROR: Error when executing priv"..., 77ERROR: Error when
> executing privileged control ioctl (22 = Invalid argument)
> ) = 77
> close(3)                                = 0
> _exit(1)                                = ?
> [root@oscan18 root]# uname -a
> Linux oscan18 2.4.22-xeno #2 Mon Oct 20 16:58:44 EDT 2003
> i686 unknown
> 
> 
> On Tue, 21 Oct 2003, Keir Fraser wrote:
> 
> > > Failed to create domain using: /usr/local/bin/xi_create 98304 XenoLinux
> > > # /usr/local/bin/xi_create 98304 XenoLinux
> > > ERROR: Error when executing privileged control ioctl (1 = Operation not
> > > permitted)
> > > # ./xenctl physical grant -phda5 -w -n1
> > > warning: state file not found [/var/lib/xen/vdstate.xml]
> > > Could not grant physical access using: /usr/local/bin/xi_phys_grant rw 1
> > > 768 48258 29961162 5
> >
> > You need to run xenctl as root.
> >
> >  -- Keir
> >
> 
> 
> 
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