On Fri, Oct 29, 2010 at 11:57:59AM +1000, Alexander Zangerl wrote:
> attr dirs belong to selinux, and 'choke' is a tad too vague:
> please send me the output of 'strace ls /proc/1/attr'
> and 'strace cat /proc/1/attr/*'.
Attached.
execve("/bin/ls", ["ls", "/proc/1/attr"], [/* 13 vars */]) = 0
brk(0) = 0x9805000
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) =
0xb78a7000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=72570, ...}) = 0
mmap2(NULL, 72570, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7895000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/libselinux.so.1", 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\0J\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=104276, ...}) = 0
mmap2(NULL, 109564, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb787a000
mmap2(0xb7893000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18) = 0xb7893000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/i686/cmov/librt.so.1", 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\300\30\0\0004\0\0\0"..., 512)
= 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=30684, ...}) = 0
mmap2(NULL, 33364, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7871000
mmap2(0xb7878000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6) = 0xb7878000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/libacl.so.1", 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\0P\27\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=26492, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7870000
mmap2(NULL, 25220, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7869000
mmap2(0xb786f000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6) = 0xb786f000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/i686/cmov/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\320m\1\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1323460, ...}) = 0
mmap2(NULL, 1333608, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7723000
mmap2(0xb7863000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13f) = 0xb7863000
mmap2(0xb7866000, 10600, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7866000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/i686/cmov/libdl.so.2", O_RDONLY) = 3
read(3, "\177elf\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\...@\n\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=9736, ...}) = 0
mmap2(NULL, 12408, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb771f000
mmap2(0xb7721000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1) = 0xb7721000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/i686/cmov/libpthread.so.0", 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\20J\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=117367, ...}) = 0
mmap2(NULL, 98784, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7706000
mmap2(0xb771b000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x14) = 0xb771b000
mmap2(0xb771d000, 4576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb771d000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/libattr.so.1", O_RDONLY) = 3
read(3, "\177elf\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\...@\17\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=14888, ...}) = 0
mmap2(NULL, 17696, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb7701000
mmap2(0xb7705000, 4096, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3) = 0xb7705000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb7700000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb76ff000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb76ff720, limit:1048575,
seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0,
useable:1}) = 0
mprotect(0xb771b000, 4096, PROT_READ) = 0
mprotect(0xb7721000, 4096, PROT_READ) = 0
mprotect(0xb7863000, 8192, PROT_READ) = 0
mprotect(0xb7878000, 4096, PROT_READ) = 0
mprotect(0xb7893000, 4096, PROT_READ) = 0
mprotect(0xb78c5000, 4096, PROT_READ) = 0
munmap(0xb7895000, 72570) = 0
set_tid_address(0xb76ff788) = 24814
set_robust_list(0xb76ff790, 0xc) = 0
futex(0xbfbe6c90, FUTEX_WAKE_PRIVATE, 1) = 0
futex(0xbfbe6c90, FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, NULL,
bfbe6ca0) = -1 EAGAIN (Resource temporarily unavailable)
rt_sigaction(SIGRTMIN, {0xb770a410, [], SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0xb770a8e0, [], SA_RESTART|SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
uname({sys="Linux", node="davis", ...}) = 0
statfs64("/selinux", 84, {f_type="EXT2_SUPER_MAGIC", f_bsize=4096,
f_blocks=1922090, f_bfree=1824326, f_bavail=1726688, f_files=488640,
f_ffree=478743, f_fsid={1615967543, -1085746784}, f_namelen=255,
f_frsize=4096}) = 0
brk(0) = 0x9805000
brk(0x9826000) = 0x9826000
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) =
0xb78a6000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tb"..., 1024) = 388
read(3, "", 1024) = 0
close(3) = 0
munmap(0xb78a6000, 4096) = 0
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1527584, ...}) = 0
mmap2(NULL, 1527584, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb758a000
close(3) = 0
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, {B38400 opost isig icanon echo ...}) = 0
ioctl(1, TIOCGWINSZ, {ws_row=39, ws_col=139, ws_xpixel=838, ws_ypixel=511}) = 0
stat64("/proc/1/attr", {st_mode=S_IFDIR|0555, st_size=0, ...}) = 0
open("/proc/1/attr", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY|O_CLOEXEC) = 3
fcntl64(3, F_GETFD) = 0x1 (flags FD_CLOEXEC)
getdents64(3, /* 8 entries */, 32768) = 224
getdents64(3, /* 0 entries */, 32768) = 0
close(3) = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 34), ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb78a6000
write(1, "current exec fscreate keycrea"..., 53) = 53
close(1) = 0
munmap(0xb78a6000, 4096) = 0
close(2) = 0
exit_group(0) = ?
execve("/bin/cat", ["cat", "/proc/1/attr/current", "/proc/1/attr/exec",
"/proc/1/attr/fscreate", "/proc/1/attr/keycreate", "/proc/1/attr/prev",
"/proc/1/attr/sockcreate"], [/* 13 vars */]) = 0
brk(0) = 0x8fed000
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) =
0xb7730000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=72570, ...}) = 0
mmap2(NULL, 72570, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb771e000
close(3) = 0
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory)
open("/lib/i686/cmov/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\320m\1\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1323460, ...}) = 0
mmap2(NULL, 1333608, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
0xb75d8000
mmap2(0xb7718000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13f) = 0xb7718000
mmap2(0xb771b000, 10600, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb771b000
close(3) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb75d7000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb75d78d0, limit:1048575,
seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0,
useable:1}) = 0
mprotect(0xb7718000, 8192, PROT_READ) = 0
mprotect(0xb774e000, 4096, PROT_READ) = 0
munmap(0xb771e000, 72570) = 0
brk(0) = 0x8fed000
brk(0x900e000) = 0x900e000
open("/usr/lib/locale/locale-archive", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=1527584, ...}) = 0
mmap2(NULL, 1527584, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7462000
close(3) = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 34), ...}) = 0
open("/proc/1/attr/current", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0666, st_size=0, ...}) = 0
read(3, 0x8fee000, 32768) = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5) = 5
write(2, "/proc/1/attr/current", 20) = 20
open("/usr/share/locale/locale.alias", O_RDONLY) = 4
fstat64(4, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xb772f000
read(4, "# Locale name alias data base.\n#"..., 4096) = 2570
read(4, "", 4096) = 0
close(4) = 0
munmap(0xb772f000, 4096) = 0
open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT
(No such file or directory)
open("/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT
(No such file or directory)
open("/usr/share/locale/en_US/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No
such file or directory)
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT
(No such file or directory)
open("/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No
such file or directory)
open("/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such
file or directory)
write(2, ": Invalid argument", 18) = 18
write(2, "\n", 1) = 1
close(3) = 0
open("/proc/1/attr/exec", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0666, st_size=0, ...}) = 0
read(3, 0x8fee000, 32768) = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5) = 5
write(2, "/proc/1/attr/exec", 17) = 17
write(2, ": Invalid argument", 18) = 18
write(2, "\n", 1) = 1
close(3) = 0
open("/proc/1/attr/fscreate", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0666, st_size=0, ...}) = 0
read(3, 0x8fee000, 32768) = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5) = 5
write(2, "/proc/1/attr/fscreate", 21) = 21
write(2, ": Invalid argument", 18) = 18
write(2, "\n", 1) = 1
close(3) = 0
open("/proc/1/attr/keycreate", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0666, st_size=0, ...}) = 0
read(3, 0x8fee000, 32768) = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5) = 5
write(2, "/proc/1/attr/keycreate", 22) = 22
write(2, ": Invalid argument", 18) = 18
write(2, "\n", 1) = 1
close(3) = 0
open("/proc/1/attr/prev", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, 0x8fee000, 32768) = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5) = 5
write(2, "/proc/1/attr/prev", 17) = 17
write(2, ": Invalid argument", 18) = 18
write(2, "\n", 1) = 1
close(3) = 0
open("/proc/1/attr/sockcreate", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0666, st_size=0, ...}) = 0
read(3, 0x8fee000, 32768) = -1 EINVAL (Invalid argument)
write(2, "cat: ", 5) = 5
write(2, "/proc/1/attr/sockcreate", 23) = 23
write(2, ": Invalid argument", 18) = 18
write(2, "\n", 1) = 1
close(3) = 0
close(1) = 0
close(2) = 0
exit_group(1) = ?
