On Monday 10 January 2005 03:48 am, Henrik Nordstrom wrote: > On Mon, 10 Jan 2005, Rob Landley wrote: > > Did you read second sentence in the bit you just quoted? How, exactly, > > could I chroot into there and compile stuff if ld isn't there? > > Is the permissions on your hostfs tree set correctly?
Yup. I tried chown -R all the files to knoppix, and I tried running uml as root. No major difference I could spot. And again, it works fine via chroot. > Can you execute ld manually? Yes. > And again, have you tried with the -bb UML kernels? Just did. The result is much more stable than the previous one: it seems to boot up without error and give me a shell prompt reliably. Nice work. Attempting to actually _use_ still fails the same way: can't find ld. My first attempt I forgot to remount the hostfs rw and it went into an endless loop eating CPU until I killed it. I admit I had it set up wrong, but an endless loop probably isn't the correct behavior there... The second time I tried adding rw to the command line. Nice trick that, I was trying ,rw appended to the rootfs flags and it didn't work. Here's what happened then (with gratuitous wordwrap of long vmlinux command line provided by kmail): [EMAIL PROTECTED] ./vmlinux rootfstype=hostfs rootflags=/home/knoppix/newbuild/build rw init=/bin/bash ... All bugs added by David S. Miller <davem@redhat.com> SCTP: Hash tables configured (established 512 bind 1024) Initializing stdio console driver VFS: Mounted root (hostfs filesystem). bash-2.05b# ld ld: no input files bash-2.05b# gcc hello.c collect2: cannot find `ld' bash-2.05b# exit Then I chrooted into the directory: [EMAIL PROTECTED] chroot ~knoppix/newbuild/build bash-2.05b# gcc hello.c bash-2.05b# ls -l a.out -rwxr-xr-x 1 root root 3447 Jan 10 23:41 a.out bash-2.05b# strip a.out bash-2.05b# ls -l a.out -rwxr-xr-x 1 root root 2164 Jan 10 23:41 a.out bash-2.05b# ./a.out Hello world! bash-2.05b# > http://www.user-mode-linux.org/~blaisorblade/patches/guest/uml-2.6.9-bb4/ Yup. Applied the big patch. It definitely helped stabilize things, just didn't fix this problem. > > C) I've compiled this project on a machine with 32 megs of ram and no > > swap, and my laptop actually has 128 megs so if UML isn't giving itself > > at least 32 it's making a bad decision... > > UML gives itself as much memory as you tell it to on the kernel command > line. Default to 32 MB IIRC. Of which 28 megs or so are free after the kernel grabs its structures, that matches what I'm seeing. That should definitely be enough to compile hello.c, and probably enough to run my whole build process. Here, try it for yourself. I just uploaded "http://www.landley.net/build.tar.bz2";, which is 10.2 megabytes. It's what my build process from the earlier website results in. (Okay, a slightly more up to date version than the one on the website, but the differences don't matter for this.) There are a few other miscelanous components, but the bulk of it is uclibc, busybox, gcc, and binutils. "tar xvjpf build.tar.bz2" (as root) should extract the build directory with all the permissions intact, then you can chroot into it, drop a hello world executable in there (it's got busybox vi) and compile it with gcc. This should work. Then try doing the same thing with uml (as root, so as not to worry about permissions, or chown to taste if you're not up for that). This doesn't work for me. Attached is the config I used to build 2.6.9-bb4. The command line I used to run it was mentioned earlier in this message. > Regards > Henrik Rob
# # Automatically generated make config: don't edit # Linux kernel version: 2.6.9-bb4 # Mon Jan 10 22:07:36 2005 # CONFIG_USERMODE=y CONFIG_MMU=y CONFIG_UID16=y CONFIG_RWSEM_GENERIC_SPINLOCK=y # # UML-specific options # CONFIG_MODE_TT=y CONFIG_MODE_SKAS=y CONFIG_NET=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=y CONFIG_HOSTFS=y # CONFIG_HPPFS is not set CONFIG_MCONSOLE=y # CONFIG_HOST_2G_2G is not set # CONFIG_SMP is not set CONFIG_NEST_LEVEL=0 CONFIG_KERNEL_HALF_GIGS=1 # CONFIG_HIGHMEM is not set CONFIG_KERNEL_STACK_ORDER=2 CONFIG_UML_REAL_TIME_CLOCK=y # # Code maturity level options # CONFIG_EXPERIMENTAL=y # CONFIG_CLEAN_COMPILE is not set CONFIG_BROKEN=y CONFIG_BROKEN_ON_SMP=y # # General setup # CONFIG_LOCALVERSION="" # CONFIG_SWAP is not set CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_BSD_PROCESS_ACCT=y # CONFIG_BSD_PROCESS_ACCT_V3 is not set CONFIG_SYSCTL=y CONFIG_AUDIT=y CONFIG_LOG_BUF_SHIFT=15 CONFIG_HOTPLUG=y # CONFIG_IKCONFIG is not set # CONFIG_EMBEDDED is not set CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set # CONFIG_KALLSYMS_EXTRA_PASS is not set CONFIG_FUTEX=y CONFIG_EPOLL=y CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y # CONFIG_CC_OPTIMIZE_FOR_SIZE is not set CONFIG_SHMEM=y # CONFIG_TINY_SHMEM is not set # # Loadable module support # # CONFIG_MODULES is not set # # Generic Driver Options # CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_FW_LOADER=y # CONFIG_DEBUG_DRIVER is not set # # Character Devices # CONFIG_STDIO_CONSOLE=y # CONFIG_SSL is not set CONFIG_FD_CHAN=y # CONFIG_NULL_CHAN is not set # CONFIG_PORT_CHAN is not set # CONFIG_PTY_CHAN is not set # CONFIG_TTY_CHAN is not set # CONFIG_XTERM_CHAN is not set CONFIG_NOCONFIG_CHAN=y CONFIG_CON_ZERO_CHAN="fd:0,fd:1" CONFIG_CON_CHAN="xterm" CONFIG_SSL_CHAN="pty" CONFIG_UNIX98_PTYS=y CONFIG_LEGACY_PTYS=y CONFIG_LEGACY_PTY_COUNT=256 # CONFIG_WATCHDOG is not set # CONFIG_UML_SOUND is not set # CONFIG_SOUND is not set # CONFIG_HOSTAUDIO is not set # # Block Devices # CONFIG_BLK_DEV_UBD=y # CONFIG_BLK_DEV_UBD_SYNC is not set CONFIG_BLK_DEV_COW_COMMON=y CONFIG_BLK_DEV_LOOP=y CONFIG_BLK_DEV_NBD=y CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_SIZE=4096 CONFIG_BLK_DEV_INITRD=y # CONFIG_MMAPPER is not set CONFIG_NETDEVICES=y # # UML Network Devices # # CONFIG_UML_NET is not set # # Networking support # # # Networking options # CONFIG_PACKET=y CONFIG_PACKET_MMAP=y CONFIG_NETLINK_DEV=y CONFIG_UNIX=y CONFIG_NET_KEY=y CONFIG_INET=y CONFIG_IP_MULTICAST=y CONFIG_IP_ADVANCED_ROUTER=y CONFIG_IP_MULTIPLE_TABLES=y CONFIG_IP_ROUTE_FWMARK=y # CONFIG_IP_ROUTE_MULTIPATH is not set # CONFIG_IP_ROUTE_VERBOSE is not set # CONFIG_IP_PNP is not set CONFIG_NET_IPIP=y CONFIG_NET_IPGRE=y # CONFIG_NET_IPGRE_BROADCAST is not set # CONFIG_IP_MROUTE is not set # CONFIG_ARPD is not set CONFIG_SYN_COOKIES=y CONFIG_INET_AH=y CONFIG_INET_ESP=y CONFIG_INET_IPCOMP=y CONFIG_INET_TUNNEL=y # # IP: Virtual Server Configuration # CONFIG_IP_VS=y # CONFIG_IP_VS_DEBUG is not set CONFIG_IP_VS_TAB_BITS=12 # # IPVS transport protocol load balancing support # CONFIG_IP_VS_PROTO_TCP=y CONFIG_IP_VS_PROTO_UDP=y CONFIG_IP_VS_PROTO_ESP=y CONFIG_IP_VS_PROTO_AH=y # # IPVS scheduler # CONFIG_IP_VS_RR=y CONFIG_IP_VS_WRR=y CONFIG_IP_VS_LC=y CONFIG_IP_VS_WLC=y CONFIG_IP_VS_LBLC=y CONFIG_IP_VS_LBLCR=y CONFIG_IP_VS_DH=y CONFIG_IP_VS_SH=y CONFIG_IP_VS_SED=y CONFIG_IP_VS_NQ=y # # IPVS application helper # CONFIG_IP_VS_FTP=y CONFIG_IPV6=y CONFIG_IPV6_PRIVACY=y CONFIG_INET6_AH=y CONFIG_INET6_ESP=y CONFIG_INET6_IPCOMP=y CONFIG_INET6_TUNNEL=y CONFIG_IPV6_TUNNEL=y CONFIG_NETFILTER=y # CONFIG_NETFILTER_DEBUG is not set CONFIG_BRIDGE_NETFILTER=y # # IP: Netfilter Configuration # CONFIG_IP_NF_CONNTRACK=y # CONFIG_IP_NF_CT_ACCT is not set # CONFIG_IP_NF_CT_PROTO_SCTP is not set CONFIG_IP_NF_FTP=y CONFIG_IP_NF_IRC=y CONFIG_IP_NF_TFTP=y CONFIG_IP_NF_AMANDA=y CONFIG_IP_NF_QUEUE=y CONFIG_IP_NF_IPTABLES=y CONFIG_IP_NF_MATCH_LIMIT=y CONFIG_IP_NF_MATCH_IPRANGE=y CONFIG_IP_NF_MATCH_MAC=y CONFIG_IP_NF_MATCH_PKTTYPE=y CONFIG_IP_NF_MATCH_MARK=y CONFIG_IP_NF_MATCH_MULTIPORT=y CONFIG_IP_NF_MATCH_TOS=y CONFIG_IP_NF_MATCH_RECENT=y CONFIG_IP_NF_MATCH_ECN=y CONFIG_IP_NF_MATCH_DSCP=y CONFIG_IP_NF_MATCH_AH_ESP=y CONFIG_IP_NF_MATCH_LENGTH=y CONFIG_IP_NF_MATCH_TTL=y CONFIG_IP_NF_MATCH_TCPMSS=y CONFIG_IP_NF_MATCH_HELPER=y CONFIG_IP_NF_MATCH_STATE=y CONFIG_IP_NF_MATCH_CONNTRACK=y CONFIG_IP_NF_MATCH_OWNER=y CONFIG_IP_NF_MATCH_PHYSDEV=y # CONFIG_IP_NF_MATCH_ADDRTYPE is not set # CONFIG_IP_NF_MATCH_REALM is not set # CONFIG_IP_NF_MATCH_SCTP is not set # CONFIG_IP_NF_MATCH_COMMENT is not set CONFIG_IP_NF_FILTER=y CONFIG_IP_NF_TARGET_REJECT=y CONFIG_IP_NF_TARGET_LOG=y CONFIG_IP_NF_TARGET_ULOG=y CONFIG_IP_NF_TARGET_TCPMSS=y CONFIG_IP_NF_NAT=y CONFIG_IP_NF_NAT_NEEDED=y CONFIG_IP_NF_TARGET_MASQUERADE=y CONFIG_IP_NF_TARGET_REDIRECT=y CONFIG_IP_NF_TARGET_NETMAP=y CONFIG_IP_NF_TARGET_SAME=y CONFIG_IP_NF_NAT_LOCAL=y CONFIG_IP_NF_NAT_SNMP_BASIC=y CONFIG_IP_NF_NAT_IRC=y CONFIG_IP_NF_NAT_FTP=y CONFIG_IP_NF_NAT_TFTP=y CONFIG_IP_NF_NAT_AMANDA=y CONFIG_IP_NF_MANGLE=y CONFIG_IP_NF_TARGET_TOS=y CONFIG_IP_NF_TARGET_ECN=y CONFIG_IP_NF_TARGET_DSCP=y CONFIG_IP_NF_TARGET_MARK=y CONFIG_IP_NF_TARGET_CLASSIFY=y CONFIG_IP_NF_RAW=y CONFIG_IP_NF_TARGET_NOTRACK=y CONFIG_IP_NF_ARPTABLES=y CONFIG_IP_NF_ARPFILTER=y CONFIG_IP_NF_ARP_MANGLE=y # # IPv6: Netfilter Configuration # CONFIG_IP6_NF_QUEUE=y CONFIG_IP6_NF_IPTABLES=y CONFIG_IP6_NF_MATCH_LIMIT=y CONFIG_IP6_NF_MATCH_MAC=y CONFIG_IP6_NF_MATCH_RT=y CONFIG_IP6_NF_MATCH_OPTS=y CONFIG_IP6_NF_MATCH_FRAG=y CONFIG_IP6_NF_MATCH_HL=y CONFIG_IP6_NF_MATCH_MULTIPORT=y CONFIG_IP6_NF_MATCH_OWNER=y CONFIG_IP6_NF_MATCH_MARK=y CONFIG_IP6_NF_MATCH_IPV6HEADER=y CONFIG_IP6_NF_MATCH_AHESP=y CONFIG_IP6_NF_MATCH_LENGTH=y CONFIG_IP6_NF_MATCH_EUI64=y # CONFIG_IP6_NF_MATCH_PHYSDEV is not set CONFIG_IP6_NF_FILTER=y CONFIG_IP6_NF_TARGET_LOG=y CONFIG_IP6_NF_MANGLE=y CONFIG_IP6_NF_TARGET_MARK=y CONFIG_IP6_NF_RAW=y # # DECnet: Netfilter Configuration # CONFIG_DECNET_NF_GRABULATOR=y # # Bridge: Netfilter Configuration # CONFIG_BRIDGE_NF_EBTABLES=y CONFIG_BRIDGE_EBT_BROUTE=y CONFIG_BRIDGE_EBT_T_FILTER=y CONFIG_BRIDGE_EBT_T_NAT=y CONFIG_BRIDGE_EBT_802_3=y CONFIG_BRIDGE_EBT_AMONG=y CONFIG_BRIDGE_EBT_ARP=y CONFIG_BRIDGE_EBT_IP=y CONFIG_BRIDGE_EBT_LIMIT=y CONFIG_BRIDGE_EBT_MARK=y CONFIG_BRIDGE_EBT_PKTTYPE=y CONFIG_BRIDGE_EBT_STP=y CONFIG_BRIDGE_EBT_VLAN=y CONFIG_BRIDGE_EBT_ARPREPLY=y CONFIG_BRIDGE_EBT_DNAT=y CONFIG_BRIDGE_EBT_MARK_T=y CONFIG_BRIDGE_EBT_REDIRECT=y CONFIG_BRIDGE_EBT_SNAT=y CONFIG_BRIDGE_EBT_LOG=y CONFIG_XFRM=y CONFIG_XFRM_USER=y # # SCTP Configuration (EXPERIMENTAL) # CONFIG_IP_SCTP=y # CONFIG_SCTP_DBG_MSG is not set # CONFIG_SCTP_DBG_OBJCNT is not set CONFIG_SCTP_HMAC_NONE=y # CONFIG_SCTP_HMAC_SHA1 is not set # CONFIG_SCTP_HMAC_MD5 is not set CONFIG_ATM=y CONFIG_ATM_CLIP=y CONFIG_ATM_CLIP_NO_ICMP=y CONFIG_ATM_LANE=y CONFIG_ATM_MPOA=y CONFIG_ATM_BR2684=y # CONFIG_ATM_BR2684_IPFILTER is not set CONFIG_BRIDGE=y CONFIG_VLAN_8021Q=y CONFIG_DECNET=y # CONFIG_DECNET_SIOCGIFCONF is not set CONFIG_DECNET_ROUTER=y CONFIG_DECNET_ROUTE_FWMARK=y CONFIG_LLC=y CONFIG_LLC2=y CONFIG_IPX=y CONFIG_IPX_INTERN=y CONFIG_ATALK=y CONFIG_DEV_APPLETALK=y CONFIG_IPDDP=y CONFIG_IPDDP_ENCAP=y CONFIG_IPDDP_DECAP=y CONFIG_X25=y CONFIG_LAPB=y # CONFIG_NET_DIVERT is not set CONFIG_ECONET=y CONFIG_ECONET_AUNUDP=y CONFIG_ECONET_NATIVE=y CONFIG_WAN_ROUTER=y # CONFIG_NET_HW_FLOWCONTROL is not set # # QoS and/or fair queueing # CONFIG_NET_SCHED=y CONFIG_NET_SCH_CLK_JIFFIES=y # CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set # CONFIG_NET_SCH_CLK_CPU is not set CONFIG_NET_SCH_CBQ=y CONFIG_NET_SCH_HTB=y CONFIG_NET_SCH_HFSC=y CONFIG_NET_SCH_ATM=y CONFIG_NET_SCH_PRIO=y CONFIG_NET_SCH_RED=y CONFIG_NET_SCH_SFQ=y CONFIG_NET_SCH_TEQL=y CONFIG_NET_SCH_TBF=y CONFIG_NET_SCH_GRED=y CONFIG_NET_SCH_DSMARK=y # CONFIG_NET_SCH_NETEM is not set CONFIG_NET_SCH_INGRESS=y CONFIG_NET_QOS=y CONFIG_NET_ESTIMATOR=y CONFIG_NET_CLS=y CONFIG_NET_CLS_TCINDEX=y CONFIG_NET_CLS_ROUTE4=y CONFIG_NET_CLS_ROUTE=y CONFIG_NET_CLS_FW=y CONFIG_NET_CLS_U32=y # CONFIG_CLS_U32_PERF is not set # CONFIG_NET_CLS_IND is not set CONFIG_NET_CLS_RSVP=y CONFIG_NET_CLS_RSVP6=y # CONFIG_NET_CLS_ACT is not set CONFIG_NET_CLS_POLICE=y # # Network testing # CONFIG_NET_PKTGEN=y # CONFIG_NETPOLL is not set # CONFIG_NET_POLL_CONTROLLER is not set # CONFIG_HAMRADIO is not set # CONFIG_IRDA is not set # CONFIG_BT is not set CONFIG_DUMMY=y # CONFIG_BONDING is not set # CONFIG_EQUALIZER is not set # CONFIG_TUN is not set # CONFIG_ETHERTAP is not set # # Ethernet (10 or 100Mbit) # # CONFIG_NET_ETHERNET is not set # # Ethernet (1000 Mbit) # # # Ethernet (10000 Mbit) # # # Token Ring devices # # # Wireless LAN (non-hamradio) # # CONFIG_NET_RADIO is not set # # PCMCIA network device support # # CONFIG_NET_PCMCIA is not set # # Wan interfaces # # CONFIG_WAN is not set # # ATM drivers # # CONFIG_ATM_TCP is not set # CONFIG_PPP is not set # CONFIG_SLIP is not set # CONFIG_SHAPER is not set # CONFIG_NETCONSOLE is not set # # File systems # CONFIG_EXT2_FS=y # CONFIG_EXT2_FS_XATTR is not set CONFIG_EXT3_FS=y # CONFIG_EXT3_FS_XATTR is not set CONFIG_JBD=y # CONFIG_JBD_DEBUG is not set # CONFIG_REISERFS_FS is not set # CONFIG_JFS_FS is not set # CONFIG_XFS_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_ROMFS_FS is not set # CONFIG_QUOTA is not set # CONFIG_AUTOFS_FS is not set # CONFIG_AUTOFS4_FS is not set # # CD-ROM/DVD Filesystems # # CONFIG_ISO9660_FS is not set # CONFIG_UDF_FS is not set # # DOS/FAT/NT Filesystems # # CONFIG_MSDOS_FS is not set # CONFIG_VFAT_FS is not set # CONFIG_NTFS_FS is not set # # Pseudo filesystems # CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_SYSFS=y # CONFIG_DEVFS_FS is not set # CONFIG_DEVPTS_FS_XATTR is not set # CONFIG_TMPFS is not set # CONFIG_HUGETLBFS is not set # CONFIG_HUGETLB_PAGE is not set CONFIG_RAMFS=y # # Miscellaneous filesystems # # CONFIG_ADFS_FS is not set # CONFIG_AFFS_FS is not set # CONFIG_HFS_FS is not set # CONFIG_HFSPLUS_FS is not set # CONFIG_BEFS_FS is not set # CONFIG_BFS_FS is not set # CONFIG_EFS_FS is not set # CONFIG_CRAMFS is not set # CONFIG_VXFS_FS is not set # CONFIG_HPFS_FS is not set # CONFIG_QNX4FS_FS is not set # CONFIG_SYSV_FS is not set # CONFIG_UFS_FS is not set # # Network File Systems # # CONFIG_NFS_FS is not set # CONFIG_NFSD is not set # CONFIG_EXPORTFS is not set # CONFIG_SMB_FS is not set # CONFIG_CIFS is not set # CONFIG_NCP_FS is not set # CONFIG_CODA_FS is not set # CONFIG_AFS_FS is not set # # Partition Types # # CONFIG_PARTITION_ADVANCED is not set CONFIG_MSDOS_PARTITION=y # # Native Language Support # # CONFIG_NLS is not set # # Security options # # CONFIG_SECURITY is not set # # Cryptographic options # CONFIG_CRYPTO=y CONFIG_CRYPTO_HMAC=y CONFIG_CRYPTO_NULL=y CONFIG_CRYPTO_MD4=y CONFIG_CRYPTO_MD5=y CONFIG_CRYPTO_SHA1=y CONFIG_CRYPTO_SHA256=y CONFIG_CRYPTO_SHA512=y # CONFIG_CRYPTO_WP512 is not set CONFIG_CRYPTO_DES=y CONFIG_CRYPTO_BLOWFISH=y CONFIG_CRYPTO_TWOFISH=y CONFIG_CRYPTO_SERPENT=y CONFIG_CRYPTO_AES=y CONFIG_CRYPTO_CAST5=y CONFIG_CRYPTO_CAST6=y # CONFIG_CRYPTO_TEA is not set CONFIG_CRYPTO_ARC4=y # CONFIG_CRYPTO_KHAZAD is not set CONFIG_CRYPTO_DEFLATE=y CONFIG_CRYPTO_MICHAEL_MIC=y CONFIG_CRYPTO_CRC32C=y # CONFIG_CRYPTO_TEST is not set # # Library routines # # CONFIG_CRC_CCITT is not set # CONFIG_CRC32 is not set CONFIG_LIBCRC32C=y CONFIG_ZLIB_INFLATE=y CONFIG_ZLIB_DEFLATE=y # # SCSI support # # CONFIG_SCSI is not set # # Multi-device support (RAID and LVM) # # CONFIG_MD is not set # # Memory Technology Devices (MTD) # # CONFIG_MTD is not set # CONFIG_INPUT is not set # # Kernel hacking # CONFIG_DEBUG_KERNEL=y # CONFIG_DEBUG_SLAB is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_INFO is not set
