Building minimal rootfs to use as non-root on arm device
Corbin Champion <[email protected]>
| Newsgroups | gmane.linux.debian.devel.embedded |
|---|---|
| Message-ID | <CABxzp7CjddSjBNc4qV9mbXZAxp+0cY3nhUqdRMvA7vjuLZqeBg@mail.gmail.com> |
Hello,
I have created a rootfs using buildroot, but using a crosstool-ng toolchain
with glibc. This showed me the minimal set of files necessary. I then
replaced all the libraries with ones pulled straight from the squeeze .deb
packages for armel. I then added fakeroot and fakechroot to the mix. I
also modified the resolv.conf, hosts, and nsswitch.conf files to my liking.
After uploading this to my device, a lot is working. "*cd /*" takes me to
the correct place. "*whoami*" returns root. But, anything DNS related is
not working. For example "*ping google.com*" returns "*bad address*". I
have copied the libnss_* and libresolv libraries over and everything else I
think is necessary. Entering the same setup, but using qemu and chroot on
my host machine works, but I am trying to figure out what it is not working
on my target device.
When I run "*strace ping google.com*" I get the following:
*open("/data/local/target/bin/ping", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\2\0(\0\1\0\0\0\0\314\0\0004\0\0\0"...,
4094) = 4094*
*close(3) = 0*
*execve("/data/local/target/bin/ping", ["ping", "google.com"], [/* 21 vars
*/]) = 0*
*brk(0) = 0xb5000*
*uname({sys="Linux", node="localhost", ...}) = 0*
*access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or
directory)*
*mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x4001d000*
*open("/data/local/target/usr/lib/fakechroot/libfakechroot.so", O_RDONLY) =
3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\364\32\0\0004\0\0\0"...,
512) = 512*
*fstat64(3, {st_mode=S_IFREG|0666, st_size=45540, ...}) = 0*
*mmap2(NULL, 77628, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x40026000*
*mprotect(0x40031000, 28672, PROT_NONE) = 0*
*mmap2(0x40038000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa) = 0x40038000*
*close(3) = 0*
*open("/data/local/target/usr/lib/libfakeroot/libfakeroot-sysv.so",
O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\340'\0\0004\0\0\0"..., 512)
= 512*
*fstat64(3, {st_mode=S_IFREG|0666, st_size=29092, ...}) = 0*
*mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x4001f000*
*mmap2(NULL, 60672, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x40039000*
*mprotect(0x40040000, 28672, PROT_NONE) = 0*
*mmap2(0x40047000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6) = 0x40047000*
*close(3) = 0*
*access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/neon/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/neon/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libc.so.6", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/tls/v7l/neon/vfp/libc.so.6", O_RDONLY) =
-1 ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/v7l/neon/vfp", 0xbe8980f8) = -1
ENOENT (No such file or directory)*
*open("/data/local/target/usr/lib/tls/v7l/neon/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/v7l/neon", 0xbe8980f8) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/usr/lib/tls/v7l/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/v7l/vfp", 0xbe8980f8) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/usr/lib/tls/v7l/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/v7l", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/usr/lib/tls/neon/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/neon/vfp", 0xbe8980f8) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/usr/lib/tls/neon/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/neon", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/usr/lib/tls/vfp/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/usr/lib/tls/vfp", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/usr/lib/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/usr/lib/tls", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/usr/lib/v7l/neon/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/v7l/neon/vfp", 0xbe8980f8) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/usr/lib/v7l/neon/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/v7l/neon", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/usr/lib/v7l/vfp/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/usr/lib/v7l/vfp", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/usr/lib/v7l/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/usr/lib/v7l", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/usr/lib/neon/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/usr/lib/neon/vfp", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/usr/lib/neon/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/usr/lib/neon", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/usr/lib/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/usr/lib/vfp", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/usr/lib/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/usr/lib", {st_mode=S_IFDIR|0775, st_size=0,
...}) = 0*
*open("/data/local/target/lib/tls/v7l/neon/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/lib/tls/v7l/neon/vfp", 0xbe8980f8) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/lib/tls/v7l/neon/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/lib/tls/v7l/neon", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/lib/tls/v7l/vfp/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/lib/tls/v7l/vfp", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/lib/tls/v7l/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/tls/v7l", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/tls/neon/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/lib/tls/neon/vfp", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/lib/tls/neon/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/lib/tls/neon", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/tls/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/tls/vfp", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/tls/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/tls", 0xbe8980f8) = -1 ENOENT (No such file
or directory)*
*open("/data/local/target/lib/v7l/neon/vfp/libc.so.6", O_RDONLY) = -1
ENOENT (No such file or directory)*
*stat64("/data/local/target/lib/v7l/neon/vfp", 0xbe8980f8) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/lib/v7l/neon/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/lib/v7l/neon", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/v7l/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/v7l/vfp", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/v7l/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/v7l", 0xbe8980f8) = -1 ENOENT (No such file
or directory)*
*open("/data/local/target/lib/neon/vfp/libc.so.6", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*stat64("/data/local/target/lib/neon/vfp", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/neon/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/neon", 0xbe8980f8) = -1 ENOENT (No such
file or directory)*
*open("/data/local/target/lib/vfp/libc.so.6", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*stat64("/data/local/target/lib/vfp", 0xbe8980f8) = -1 ENOENT (No such file
or directory)*
*open("/data/local/target/lib/libc.so.6", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\374V\1\0004\0\0\0"..., 512)
= 512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=1209660, ...}) = 0*
*mmap2(NULL, 1246468, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
= 0x40048000*
*mprotect(0x4016b000, 32768, PROT_NONE) = 0*
*mmap2(0x40173000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x123) = 0x40173000*
*mmap2(0x40176000, 9476, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40176000*
*close(3) = 0*
*open("tls/v7l/neon/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/neon/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libdl.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libdl.so.2", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/lib/libdl.so.2", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0$\t\0\0004\0\0\0"..., 512) =
512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=9808, ...}) = 0*
*mmap2(NULL, 41136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x40179000*
*mprotect(0x4017b000, 28672, PROT_NONE) = 0*
*mmap2(0x40182000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0x40182000*
*close(3) = 0*
*mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40020000*
*set_tls(0x40020170, 0x40020847, 0x40020848, 0x40020170, 0x40025000) = 0*
*mprotect(0x40182000, 4096, PROT_READ) = 0*
*mprotect(0x40173000, 8192, PROT_READ) = 0*
*mprotect(0xb1000, 4096, PROT_READ) = 0*
*mprotect(0x40024000, 4096, PROT_READ) = 0*
*brk(0) = 0xb5000*
*brk(0xd6000) = 0xd6000*
*socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3*
*connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1
ENOENT (No such file or directory)*
*close(3) = 0*
*socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3*
*connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1
ENOENT (No such file or directory)*
*close(3) = 0*
*open("/etc/nsswitch.conf", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/neon/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/v7l/neon/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/v7l/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/v7l/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/neon/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("v7l/neon/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libnss_compat.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libnss_compat.so.2", O_RDONLY) = -1
ENOENT (No such file or directory)*
*open("/data/local/target/lib/libnss_compat.so.2", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0|\r\0\0004\0\0\0"..., 512) =
512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=26480, ...}) = 0*
*mmap2(NULL, 57952, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x40184000*
*mprotect(0x4018a000, 28672, PROT_NONE) = 0*
*mmap2(0x40191000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5) = 0x40191000*
*close(3) = 0*
*open("tls/v7l/neon/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/v7l/neon/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libnsl.so.1", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libnsl.so.1", O_RDONLY) = -1 ENOENT (No
such file or directory)*
*open("/data/local/target/lib/libnsl.so.1", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0x/\0\0004\0\0\0"..., 512) =
512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=75732, ...}) = 0*
*mmap2(NULL, 116488, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0)
= 0x40193000*
*mprotect(0x401a5000, 28672, PROT_NONE) = 0*
*mmap2(0x401ac000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11) = 0x401ac000*
*mmap2(0x401ae000, 5896, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x401ae000*
*close(3) = 0*
*mprotect(0x401ac000, 4096, PROT_READ) = 0*
*mprotect(0x40191000, 4096, PROT_READ) = 0*
*open("/etc/nsswitch.conf", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/neon/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/v7l/neon/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/v7l/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/neon/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("v7l/neon/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libnss_nis.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libnss_nis.so.2", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/lib/libnss_nis.so.2", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0X\30\0\0004\0\0\0"..., 512)
= 512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=38608, ...}) = 0*
*mmap2(NULL, 70236, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x401b0000*
*mprotect(0x401b9000, 28672, PROT_NONE) = 0*
*mmap2(0x401c0000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8) = 0x401c0000*
*close(3) = 0*
*open("tls/v7l/neon/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/v7l/neon/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/v7l/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/v7l/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/neon/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("v7l/neon/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libnss_files.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libnss_files.so.2", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/lib/libnss_files.so.2", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\330\31\0\0004\0\0\0"...,
512) = 512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=42688, ...}) = 0*
*mmap2(NULL, 74492, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x401c2000*
*mprotect(0x401cc000, 28672, PROT_NONE) = 0*
*mmap2(0x401d3000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9) = 0x401d3000*
*close(3) = 0*
*mprotect(0x401d3000, 4096, PROT_READ) = 0*
*mprotect(0x401c0000, 4096, PROT_READ) = 0*
*open("/data/local/target/etc/passwd", O_RDONLY|O_CLOEXEC) = 3*
*fcntl64(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)*
*_llseek(3, 0, [0], SEEK_CUR) = 0*
*fstat64(3, {st_mode=S_IFREG|0666, st_size=596, ...}) = 0*
*mmap2(NULL, 596, PROT_READ, MAP_SHARED, 3, 0) = 0x40021000*
*_llseek(3, 596, [596], SEEK_SET) = 0*
*munmap(0x40021000, 596) = 0*
*close(3) = 0*
*getpid() = 5994*
*socket(PF_NETLINK, SOCK_RAW, 0) = 3*
*bind(3, {sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 0*
*getsockname(3, {sa_family=AF_NETLINK, pid=5994, groups=00000000}, [12]) = 0
*
*gettimeofday({1366699621, 228514}, NULL) = 0*
*sendto(3, "\24\0\0\0\26\0\1\3e.vQ\0\0\0\0\0\0\0\0", 20, 0,
{sa_family=AF_NETLINK, pid=0, groups=00000000}, 12) = 20*
*recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000},
msg_iov(1)=[{"0\0\0\0\24\0\2\0e.vQj\27\0\0\2\10\200\376\1\0\0\0\10\0\1\0\177\0\0\1"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 108*
*recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000},
msg_iov(1)=[{"@\0\0\0\24\0\2\0e.vQj\27\0\0\n\200\200\376\1\0\0\0\24\0\1\0\0\0\0\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 128*
*recvmsg(3, {msg_name(12)={sa_family=AF_NETLINK, pid=0, groups=00000000},
msg_iov(1)=[{"\24\0\0\0\3\0\2\0e.vQj\27\0\0\0\0\0\0\1\0\0\0\24\0\1\0\0\0\0\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 20*
*close(3) = 0*
*open("/etc/resolv.conf", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*uname({sys="Linux", node="localhost", ...}) = 0*
*socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3*
*connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1
ENOENT (No such file or directory)*
*close(3) = 0*
*socket(PF_FILE, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3*
*connect(3, {sa_family=AF_FILE, path="/var/run/nscd/socket"}, 110) = -1
ENOENT (No such file or directory)*
*close(3) = 0*
*open("/etc/nsswitch.conf", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/neon/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/v7l/neon/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/v7l/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("tls/neon/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file
or directory)*
*open("v7l/neon/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libnss_dns.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libnss_dns.so.2", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/lib/libnss_dns.so.2", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0000\v\0\0004\0\0\0"..., 512)
= 512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=18040, ...}) = 0*
*mmap2(NULL, 49316, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x401d5000*
*mprotect(0x401d9000, 28672, PROT_NONE) = 0*
*mmap2(0x401e0000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3) = 0x401e0000*
*close(3) = 0*
*open("tls/v7l/neon/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such
file or directory)*
*open("tls/v7l/neon/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/v7l/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/neon/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("tls/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/neon/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("v7l/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("neon/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("vfp/libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("libresolv.so.2", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*open("/data/local/target/usr/lib/libresolv.so.2", O_RDONLY) = -1 ENOENT
(No such file or directory)*
*open("/data/local/target/lib/libresolv.so.2", O_RDONLY) = 3*
*read(3,
"\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0H$\0\0004\0\0\0"..., 512) =
512*
*fstat64(3, {st_mode=S_IFREG|0777, st_size=71524, ...}) = 0*
*mmap2(NULL, 79772, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0x401e2000*
*mmap2(0x401f2000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10) = 0x401f2000*
*mmap2(0x401f4000, 6044, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x401f4000*
*close(3) = 0*
*mprotect(0x401f2000, 4096, PROT_READ) = 0*
*mprotect(0x401e0000, 4096, PROT_READ) = 0*
*open("/etc/host.conf", O_RDONLY) = -1 ENOENT (No such file or
directory)*
*stat64("/etc/resolv.conf", 0xbe897e98) = -1 ENOENT (No such file or
directory)*
*gettimeofday({1366699621, 250480}, NULL) = 0*
*socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 3*
*connect(3, {sa_family=AF_INET, sin_port=htons(53),
sin_addr=inet_addr("127.0.0.1")}, 16) = 0*
*gettimeofday({1366699621, 251348}, NULL) = 0*
*poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3, revents=POLLOUT}])*
*send(3, "\332\316\1\0\0\1\0\0\0\0\0\0\6google\3com\0\0\1\0\1", 28,
MSG_NOSIGNAL) = 28*
*poll([{fd=3, events=POLLIN}], 1, 5000) = 1 ([{fd=3, revents=POLLERR}])*
*close(3) = 0*
*socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 3*
*connect(3, {sa_family=AF_INET, sin_port=htons(53),
sin_addr=inet_addr("127.0.0.1")}, 16) = 0*
*gettimeofday({1366699621, 253357}, NULL) = 0*
*poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3, revents=POLLOUT}])*
*send(3, "\332\316\1\0\0\1\0\0\0\0\0\0\6google\3com\0\0\1\0\1", 28,
MSG_NOSIGNAL) = 28*
*poll([{fd=3, events=POLLIN}], 1, 5000) = 1 ([{fd=3, revents=POLLERR}])*
*close(3) = 0*
*gettimeofday({1366699621, 254826}, NULL) = 0*
*socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 3*
*connect(3, {sa_family=AF_INET, sin_port=htons(53),
sin_addr=inet_addr("127.0.0.1")}, 16) = 0*
*gettimeofday({1366699621, 255502}, NULL) = 0*
*poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3, revents=POLLOUT}])*
*send(3, "DU\1\0\0\1\0\0\0\0\0\0\6google\3com\0\0\1\0\1", 28, MSG_NOSIGNAL)
= 28*
*poll([{fd=3, events=POLLIN}], 1, 5000) = 1 ([{fd=3, revents=POLLERR}])*
*close(3) = 0*
*socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 3*
*connect(3, {sa_family=AF_INET, sin_port=htons(53),
sin_addr=inet_addr("127.0.0.1")}, 16) = 0*
*gettimeofday({1366699621, 257278}, NULL) = 0*
*poll([{fd=3, events=POLLOUT}], 1, 0) = 1 ([{fd=3, revents=POLLOUT}])*
*send(3, "DU\1\0\0\1\0\0\0\0\0\0\6google\3com\0\0\1\0\1", 28, MSG_NOSIGNAL)
= 28*
*poll([{fd=3, events=POLLIN}], 1, 5000) = 1 ([{fd=3, revents=POLLERR}])*
*close(3) = 0*
*open("/data/local/target/etc/hosts", O_RDONLY|O_CLOEXEC) = 3*
*fcntl64(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)*
*fstat64(3, {st_mode=S_IFREG|0666, st_size=40, ...}) = 0*
*mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x40021000*
*read(3, "127.0.0.1\tlocalhost\n127.0.1.1\tbu"..., 4096) = 40*
*read(3, "", 4096) = 0*
*close(3) = 0*
*munmap(0x40021000, 4096) = 0*
*write(2, "ping: bad address 'google.com'\n", 31) = 31*
*exit_group(1) = ?*
You can see it finds the various libnss_* libraries and it figured out that
the host file wasn't simply at /etc/hosts, but why do you think it didn't
look in the correct location for nsswitch.conf and resolv.conf?
Thanks,
Corbin