Decidi experimentar o Arch Linux ARM, trabalhei sem problemas.
Estou tentando inicializar meu Raspberry Pi usando um compartilhamento NFS. Eu copiei a partição de inicialização da imagem Raspbian Wheezy para o cartão SD e copiei a partição raiz para um disco rígido em rede. Eu editei cmdline.txt para inicializar a partir do compartilhamento NFS. Isso funciona corretamente.
O sistema inicializa com sucesso e eu posso emitir comandos e ler / gravar arquivos sem problemas. No entanto, surgem problemas quando tento usar sudo .
pi@raspberrypi ~ $ sudo
sudo: unable to stat /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
No entanto, eu sou capaz de catar o arquivo sudoers.
pi@raspberrypi ~ $ cat /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
#includedir /etc/sudoers.d
pi ALL=(ALL) NOPASSWD: ALL
Este é o arquivo sudoers padrão, como incluído na distribuição Raspbian.
Meu / etc / exports no servidor NFS:
/DataVolume/shares/rasp *(rw,sync,no_root_squash,no_subtree_check)
Algumas informações adicionais sobre permissões:
pi@raspberrypi ~ $ ls -la /etc/sudoers
-r--r----- 1 root root 696 Jun 20 06:47 /etc/sudoers
pi@raspberrypi ~ $ ls -la /usr/bin/sudo
-rwsr-xr-x 2 root root 98712 Mar 3 2013 /usr/bin/sudo
pi@raspberrypi ~ $ ls -la /
total 1092
drwxr-xr-x 22 root root 65536 Jul 18 14:12 .
drwxr-xr-x 22 root root 65536 Jul 18 14:12 ..
drwxr-xr-x 2 root root 65536 Jun 20 08:55 bin
drwxr-xr-x 2 root root 4096 Jan 1 1970 boot
drwxr-xr-x 12 root root 3020 Jun 20 09:32 dev
drwxr-xr-x 99 root root 65536 Jul 18 17:14 etc
drwxr-xr-x 3 root root 65536 Jun 20 05:48 home
drwxr-xr-x 12 root root 65536 Jun 20 08:42 lib
drwx------ 2 root root 65536 Jun 20 05:34 lost+found
drwxr-xr-x 2 root root 65536 Jun 20 05:36 media
drwxr-xr-x 2 root root 65536 Apr 30 22:48 mnt
drwxr-xr-x 5 root root 65536 Jun 20 09:24 opt
dr-xr-xr-x 69 root root 0 Jan 1 1970 proc
drwx------ 2 root root 65536 Jun 20 05:36 root
drwxr-xr-x 10 root root 440 Jun 20 09:32 run
drwxr-xr-x 2 root root 65536 Jun 20 08:55 sbin
drwxr-xr-x 2 root root 65536 Jun 20 2012 selinux
drwxr-xr-x 2 root root 65536 Jun 20 05:36 srv
dr-xr-xr-x 12 root root 0 Jan 1 1970 sys
drwxrwxrwt 4 root root 65536 Jul 18 17:17 tmp
drwxr-xr-x 10 root root 65536 Jun 20 05:36 usr
drwxr-xr-x 11 root root 65536 Jul 18 17:14 var
pi@raspberrypi ~ $ strace /usr/bin/sudo
execve("/usr/bin/sudo", ["/usr/bin/sudo"], [/* 15 vars */]) = 0
brk(0) = 0x1774000
fcntl64(0, F_GETFD) = 0
fcntl64(1, F_GETFD) = 0
fcntl64(2, F_GETFD) = 0
access("/etc/suid-debug", F_OK) = -1 ENOENT (No such file or directory)
uname({sys="Linux", node="raspberrypi", ...}) = 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) = 0xb6f9b000
access("/etc/ld.so.preload", R_OK) = 0
open("/etc/ld.so.preload", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=44, ...}) = 0
mmap2(NULL, 44, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 0xb6f9a000
close(3) = 0
open("/usr/lib/arm-linux-gnueabihf/libcofi_rpi.so", O_RDONLY) = 3
read(3, "7ELFpi@raspberrypi ~ $ cat /proc/mounts
rootfs / rootfs rw 0 0
10.0.0.12:/DataVolume/shares/rasp / nfs rw,relatime,vers=3,rsize=4096,wsize=4096,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=10.0.0.12,mountvers=3,mountproto=udp,local_lock=all,addr=10.0.0.12 0 0
devtmpfs /dev devtmpfs rw,relatime,size=219832k,nr_inodes=54958,mode=755 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=44800k,mode=755 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=89580k 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
/dev/mmcblk0p1 /boot vfat ro,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro 0 0
pi@raspberrypi ~ $ sudo
sudo: unable to stat /etc/sudoers: Permission denied
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
pi@raspberrypi ~ $ cat /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults mail_badpass
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
#includedir /etc/sudoers.d
pi ALL=(ALL) NOPASSWD: ALL
/DataVolume/shares/rasp *(rw,sync,no_root_squash,no_subtree_check)
pi@raspberrypi ~ $ ls -la /etc/sudoers
-r--r----- 1 root root 696 Jun 20 06:47 /etc/sudoers
pi@raspberrypi ~ $ ls -la /usr/bin/sudo
-rwsr-xr-x 2 root root 98712 Mar 3 2013 /usr/bin/sudo
pi@raspberrypi ~ $ ls -la /
total 1092
drwxr-xr-x 22 root root 65536 Jul 18 14:12 .
drwxr-xr-x 22 root root 65536 Jul 18 14:12 ..
drwxr-xr-x 2 root root 65536 Jun 20 08:55 bin
drwxr-xr-x 2 root root 4096 Jan 1 1970 boot
drwxr-xr-x 12 root root 3020 Jun 20 09:32 dev
drwxr-xr-x 99 root root 65536 Jul 18 17:14 etc
drwxr-xr-x 3 root root 65536 Jun 20 05:48 home
drwxr-xr-x 12 root root 65536 Jun 20 08:42 lib
drwx------ 2 root root 65536 Jun 20 05:34 lost+found
drwxr-xr-x 2 root root 65536 Jun 20 05:36 media
drwxr-xr-x 2 root root 65536 Apr 30 22:48 mnt
drwxr-xr-x 5 root root 65536 Jun 20 09:24 opt
dr-xr-xr-x 69 root root 0 Jan 1 1970 proc
drwx------ 2 root root 65536 Jun 20 05:36 root
drwxr-xr-x 10 root root 440 Jun 20 09:32 run
drwxr-xr-x 2 root root 65536 Jun 20 08:55 sbin
drwxr-xr-x 2 root root 65536 Jun 20 2012 selinux
drwxr-xr-x 2 root root 65536 Jun 20 05:36 srv
dr-xr-xr-x 12 root root 0 Jan 1 1970 sys
drwxrwxrwt 4 root root 65536 Jul 18 17:17 tmp
drwxr-xr-x 10 root root 65536 Jun 20 05:36 usr
drwxr-xr-x 11 root root 65536 Jul 18 17:14 var
pi@raspberrypi ~ $ strace /usr/bin/sudo
execve("/usr/bin/sudo", ["/usr/bin/sudo"], [/* 15 vars */]) = 0
brk(0) = 0x1774000
fcntl64(0, F_GETFD) = 0
fcntl64(1, F_GETFD) = 0
fcntl64(2, F_GETFD) = 0
access("/etc/suid-debug", F_OK) = -1 ENOENT (No such file or directory)
uname({sys="Linux", node="raspberrypi", ...}) = 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) = 0xb6f9b000
access("/etc/ld.so.preload", R_OK) = 0
open("/etc/ld.so.preload", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=44, ...}) = 0
mmap2(NULL, 44, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 0xb6f9a000
close(3) = 0
open("/usr/lib/arm-linux-gnueabihf/libcofi_rpi.so", O_RDONLY) = 3
read(3, "7ELFpi@raspberrypi ~ $ cat /proc/mounts
rootfs / rootfs rw 0 0
10.0.0.12:/DataVolume/shares/rasp / nfs rw,relatime,vers=3,rsize=4096,wsize=4096,namlen=255,hard,nolock,proto=udp,timeo=11,retrans=3,sec=sys,mountaddr=10.0.0.12,mountvers=3,mountproto=udp,local_lock=all,addr=10.0.0.12 0 0
devtmpfs /dev devtmpfs rw,relatime,size=219832k,nr_inodes=54958,mode=755 0 0
tmpfs /run tmpfs rw,nosuid,noexec,relatime,size=44800k,mode=755 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /run/shm tmpfs rw,nosuid,nodev,noexec,relatime,size=89580k 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0
/dev/mmcblk0p1 /boot vfat ro,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro 0 0
%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%0%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 7276, SEEK_SET) = 7276
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1080) = 1080
lseek(3, 7001, SEEK_SET) = 7001
read(3, "A.%pre%%pre%%pre%aeabi%pre%$%pre%%pre%%pre%%pre%56%pre%\t\n"..., 47) = 47
fstat64(3, {st_mode=S_IFREG|0755, st_size=10170, ...}) = 0
mmap2(NULL, 39740, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f6f000
mprotect(0xb6f71000, 28672, PROT_NONE) = 0
mmap2(0xb6f78000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb6f78000
close(3) = 0
munmap(0xb6f9a000, 44) = 0
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=42997, ...}) = 0
mmap2(NULL, 42997, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6f64000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libselinux.so.1", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%TM%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 107532, SEEK_SET) = 107532
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1120) = 1120
lseek(3, 107244, SEEK_SET) = 107244
read(3, "A0%pre%%pre%%pre%aeabi%pre%&%pre%%pre%%pre%%pre%56%pre%\t\n"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=108652, ...}) = 0
mmap2(NULL, 142424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f41000
mprotect(0xb6f5b000, 28672, PROT_NONE) = 0
mmap2(0xb6f62000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19) = 0xb6f62000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libutil.so.1", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%4\t%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 8688, SEEK_SET) = 8688
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1160) = 1160
lseek(3, 8356, SEEK_SET) = 8356
read(3, "A0%pre%%pre%%pre%aeabi%pre%&%pre%%pre%%pre%%pre%56%pre%\t\n"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=9848, ...}) = 0
mmap2(NULL, 41128, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f36000
mprotect(0xb6f38000, 28672, PROT_NONE) = 0
mmap2(0xb6f3f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb6f3f000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libdl.so.2", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%(\t%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 8652, SEEK_SET) = 8652
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1160) = 1160
lseek(3, 8320, SEEK_SET) = 8320
read(3, "A0%pre%%pre%%pre%aeabi%pre%&%pre%%pre%%pre%%pre%56%pre%\t\n"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=9812, ...}) = 0
mmap2(NULL, 41136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f2b000
mprotect(0xb6f2d000, 28672, PROT_NONE) = 0
mmap2(0xb6f34000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb6f34000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%4y%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 1198880, SEEK_SET) = 1198880
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1360) = 1360
lseek(3, 1198444, SEEK_SET) = 1198444
read(3, "A.%pre%%pre%%pre%aeabi%pre%$%pre%%pre%%pre%%pre%56%pre%\t\n"..., 47) = 47
fstat64(3, {st_mode=S_IFREG|0755, st_size=1200240, ...}) = 0
mmap2(NULL, 1242408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6dfb000
mprotect(0xb6f1e000, 28672, PROT_NONE) = 0
mmap2(0xb6f25000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x122) = 0xb6f25000
mmap2(0xb6f28000, 9512, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6f28000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f9a000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f99000
set_tls(0xb6f994c0, 0xb6f99be8, 0xb6f9f048, 0xb6f994c0, 0xb6f9f048) = 0
mprotect(0xb6f25000, 8192, PROT_READ) = 0
mprotect(0xb6f34000, 4096, PROT_READ) = 0
mprotect(0xb6f3f000, 4096, PROT_READ) = 0
mprotect(0xb6f62000, 4096, PROT_READ) = 0
mprotect(0x26000, 4096, PROT_READ) = 0
mprotect(0xb6f9e000, 4096, PROT_READ) = 0
munmap(0xb6f64000, 42997) = 0
statfs64("/sys/fs/selinux", 88, 0xbebee7b8) = -1 ENOENT (No such file or directory)
statfs64("/selinux", 88, {f_type="NFS_SUPER_MAGIC", f_bsize=4096, f_blocks=485337168, f_bfree=286562224, f_bavail=286562224, f_files=30355200, f_ffree=29689069, f_fsid={0, 0}, f_namelen=255, f_frsize=4096}) = 0
brk(0) = 0x1774000
brk(0x1795000) = 0x1795000
open("/proc/filesystems", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f98000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 287
read(3, "", 1024) = 0
close(3) = 0
munmap(0xb6f98000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1534656, ...}) = 0
mmap2(NULL, 1534656, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6c84000
close(3) = 0
geteuid32() = 1000
stat64("/usr/bin/sudo", {st_mode=S_IFREG|S_ISUID|0755, st_size=98712, ...}) = 0
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f98000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2570
read(3, "", 4096) = 0
close(3) = 0
munmap(0xb6f98000, 4096) = 0
open("/usr/share/locale/en_GB.UTF-8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_GB.utf8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_GB/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.utf8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, "sudo", 4sudo) = 4
write(2, ": ", 2: ) = 2
write(2, "effective uid is not 0, is /usr/"..., 133effective uid is not 0, is /usr/bin/sudo on a file system with the 'nosuid' option set or an NFS file system without root privileges?) = 133
write(2, "\n", 1
) = 1
close(0) = 0
access("/var/run/utmpx", F_OK) = -1 ENOENT (No such file or directory)
open("/var/run/utmp", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 0
fcntl64(0, F_GETFD) = 0x1 (flags FD_CLOEXEC)
_llseek(0, 0, [0], SEEK_SET) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0, 0}}, {it_interval={0, 0}, it_value={0, 0}}) = 0
rt_sigaction(SIGALRM, {0xb6efaa54, [], 0x4000000 /* SA_??? */}, {SIG_DFL, [], 0}, 8) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={10, 0}}, {it_interval={0, 0}, it_value={0, 0}}) = 0
fcntl64(0, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(0, "%pre%%pre%%pre%*%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%~%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%02N%pre%%pre%~%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%4%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%1%pre%%pre%tty2%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%2%pre%%pre%tty3%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%3%pre%%pre%tty4%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%7%pre%%pre%tty1%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%4%pre%%pre%tty5%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%6%pre%%pre%ttyAMA0%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%5%pre%%pre%tty6%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%3%pre%%pre%pts/0%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "", 384) = 0
fcntl64(0, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0, 0}}, {it_interval={0, 0}, it_value={9, 980558}}) = 0
rt_sigaction(SIGALRM, {SIG_DFL, [], 0x4000000 /* SA_??? */}, NULL, 8) = 0
exit_group(1) = ?
%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%0%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 7276, SEEK_SET) = 7276
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1080) = 1080
lseek(3, 7001, SEEK_SET) = 7001
read(3, "A.%pre%%pre%%pre%aeabi%pre%$%pre%%pre%%pre%%pre%56%pre%\t\n"..., 47) = 47
fstat64(3, {st_mode=S_IFREG|0755, st_size=10170, ...}) = 0
mmap2(NULL, 39740, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f6f000
mprotect(0xb6f71000, 28672, PROT_NONE) = 0
mmap2(0xb6f78000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb6f78000
close(3) = 0
munmap(0xb6f9a000, 44) = 0
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=42997, ...}) = 0
mmap2(NULL, 42997, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6f64000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libselinux.so.1", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%TM%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 107532, SEEK_SET) = 107532
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1120) = 1120
lseek(3, 107244, SEEK_SET) = 107244
read(3, "A0%pre%%pre%%pre%aeabi%pre%&%pre%%pre%%pre%%pre%56%pre%\t\n"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=108652, ...}) = 0
mmap2(NULL, 142424, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f41000
mprotect(0xb6f5b000, 28672, PROT_NONE) = 0
mmap2(0xb6f62000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x19) = 0xb6f62000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libutil.so.1", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%4\t%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 8688, SEEK_SET) = 8688
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1160) = 1160
lseek(3, 8356, SEEK_SET) = 8356
read(3, "A0%pre%%pre%%pre%aeabi%pre%&%pre%%pre%%pre%%pre%56%pre%\t\n"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=9848, ...}) = 0
mmap2(NULL, 41128, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f36000
mprotect(0xb6f38000, 28672, PROT_NONE) = 0
mmap2(0xb6f3f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb6f3f000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libdl.so.2", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%(\t%pre%%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 8652, SEEK_SET) = 8652
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1160) = 1160
lseek(3, 8320, SEEK_SET) = 8320
read(3, "A0%pre%%pre%%pre%aeabi%pre%&%pre%%pre%%pre%%pre%56%pre%\t\n"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=9812, ...}) = 0
mmap2(NULL, 41136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f2b000
mprotect(0xb6f2d000, 28672, PROT_NONE) = 0
mmap2(0xb6f34000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb6f34000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY) = 3
read(3, "7ELF%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%(%pre%%pre%%pre%%pre%4y%pre%04%pre%%pre%%pre%"..., 512) = 512
lseek(3, 1198880, SEEK_SET) = 1198880
read(3, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 1360) = 1360
lseek(3, 1198444, SEEK_SET) = 1198444
read(3, "A.%pre%%pre%%pre%aeabi%pre%$%pre%%pre%%pre%%pre%56%pre%\t\n"..., 47) = 47
fstat64(3, {st_mode=S_IFREG|0755, st_size=1200240, ...}) = 0
mmap2(NULL, 1242408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6dfb000
mprotect(0xb6f1e000, 28672, PROT_NONE) = 0
mmap2(0xb6f25000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x122) = 0xb6f25000
mmap2(0xb6f28000, 9512, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6f28000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f9a000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f99000
set_tls(0xb6f994c0, 0xb6f99be8, 0xb6f9f048, 0xb6f994c0, 0xb6f9f048) = 0
mprotect(0xb6f25000, 8192, PROT_READ) = 0
mprotect(0xb6f34000, 4096, PROT_READ) = 0
mprotect(0xb6f3f000, 4096, PROT_READ) = 0
mprotect(0xb6f62000, 4096, PROT_READ) = 0
mprotect(0x26000, 4096, PROT_READ) = 0
mprotect(0xb6f9e000, 4096, PROT_READ) = 0
munmap(0xb6f64000, 42997) = 0
statfs64("/sys/fs/selinux", 88, 0xbebee7b8) = -1 ENOENT (No such file or directory)
statfs64("/selinux", 88, {f_type="NFS_SUPER_MAGIC", f_bsize=4096, f_blocks=485337168, f_bfree=286562224, f_bavail=286562224, f_files=30355200, f_ffree=29689069, f_fsid={0, 0}, f_namelen=255, f_frsize=4096}) = 0
brk(0) = 0x1774000
brk(0x1795000) = 0x1795000
open("/proc/filesystems", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f98000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 287
read(3, "", 1024) = 0
close(3) = 0
munmap(0xb6f98000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1534656, ...}) = 0
mmap2(NULL, 1534656, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6c84000
close(3) = 0
geteuid32() = 1000
stat64("/usr/bin/sudo", {st_mode=S_IFREG|S_ISUID|0755, st_size=98712, ...}) = 0
open("/usr/share/locale/locale.alias", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f98000
read(3, "# Locale name alias data base.\n#"..., 4096) = 2570
read(3, "", 4096) = 0
close(3) = 0
munmap(0xb6f98000, 4096) = 0
open("/usr/share/locale/en_GB.UTF-8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_GB.utf8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en_GB/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.utf8/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC_MESSAGES/sudo.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, "sudo", 4sudo) = 4
write(2, ": ", 2: ) = 2
write(2, "effective uid is not 0, is /usr/"..., 133effective uid is not 0, is /usr/bin/sudo on a file system with the 'nosuid' option set or an NFS file system without root privileges?) = 133
write(2, "\n", 1
) = 1
close(0) = 0
access("/var/run/utmpx", F_OK) = -1 ENOENT (No such file or directory)
open("/var/run/utmp", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 0
fcntl64(0, F_GETFD) = 0x1 (flags FD_CLOEXEC)
_llseek(0, 0, [0], SEEK_SET) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0, 0}}, {it_interval={0, 0}, it_value={0, 0}}) = 0
rt_sigaction(SIGALRM, {0xb6efaa54, [], 0x4000000 /* SA_??? */}, {SIG_DFL, [], 0}, 8) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={10, 0}}, {it_interval={0, 0}, it_value={0, 0}}) = 0
fcntl64(0, F_SETLKW, {type=F_RDLCK, whence=SEEK_SET, start=0, len=0}) = 0
read(0, "%pre%%pre%%pre%*%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%%pre%%pre%%pre%%pre%~%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%02N%pre%%pre%~%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%4%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%1%pre%%pre%tty2%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%2%pre%%pre%tty3%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%3%pre%%pre%tty4%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%7%pre%%pre%tty1%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%4%pre%%pre%tty5%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%6%pre%%pre%ttyAMA0%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%5%pre%%pre%tty6%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "%pre%%pre%%pre%3%pre%%pre%pts/0%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%%pre%"..., 384) = 384
read(0, "", 384) = 0
fcntl64(0, F_SETLKW, {type=F_UNLCK, whence=SEEK_SET, start=0, len=0}) = 0
setitimer(ITIMER_REAL, {it_interval={0, 0}, it_value={0, 0}}, {it_interval={0, 0}, it_value={9, 980558}}) = 0
rt_sigaction(SIGALRM, {SIG_DFL, [], 0x4000000 /* SA_??? */}, NULL, 8) = 0
exit_group(1) = ?
Saída de / proc / mounts:
%pre%As permissões parecem estar em ordem. Não tenho certeza se o strace é de alguma utilidade, não tenho idéia de como interpretá-lo sozinho.
Alguma ideia para consertar isso? Eu não tenho a senha de root, pois esta é uma imagem Raspbian premade, então não posso testar se su funciona.
Embora você não tenha nosuid em sua montagem, parece que seu cliente NFS está usando os nosuid.
Você pode alterar isso definindo explicitamente o sinalizador suid. Para fazer isso ao vivo como root:
mount -o remount,suid /
Se isso funcionar, você pode adicioná-lo às suas opções de inicialização.
Veja também esta questão do Ask Ask que é basicamente o mesmo problema que você está tendo.
Verifique as permissões do executável sudo. Se você copiou os arquivos para outro local, pode ser possível que você tenha perdido o bit SUID no arquivo.
$ which sudo
/usr/bin/sudo
$ ls -la /usr/bin/sudo
---s--x--x 2 root root 208808 Jun 3 2011 /usr/bin/sudo