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Nick Kralevich 2825f10b7f libc: Add O_PATH support for fgetxattr / fsetxattr 
Support O_PATH file descriptors when handling fgetxattr and fsetxattr.
This avoids requiring file read access to pull extended attributes.

This is needed to support O_PATH file descriptors when calling
SELinux's fgetfilecon() call. In particular, this allows the querying
and setting of SELinux file context by using something like the following
code:

  int dirfd = open("/path/to/dir", O_DIRECTORY);
  int fd = openat(dirfd, "file", O_PATH | O_NOFOLLOW);
  char *context;
  fgetfilecon(fd, &context);

This change was motivated by a comment in
https://android-review.googlesource.com/#/c/152680/1/toys/posix/ls.c

Change-Id: Ic0cdf9f9dd0e35a63b44a4c4a08400020041eddf
2015-06-01 15:51:56 -07:00
..
___close.S
Simplify close(2) EINTR handling.
2015-04-23 08:41:45 -07:00
___faccessat.S
Fix "faccessat ignores flags"
2015-02-24 13:40:43 -08:00
___fchmod.S
Ensure raw fchmod/fchmodat syscalls are hidden.
2015-02-03 12:10:30 -08:00
___fchmodat.S
Ensure raw fchmod/fchmodat syscalls are hidden.
2015-02-03 12:10:30 -08:00
___fgetxattr.S
libc: Add O_PATH support for fgetxattr / fsetxattr
2015-06-01 15:51:56 -07:00
___fsetxattr.S
libc: Add O_PATH support for fgetxattr / fsetxattr
2015-06-01 15:51:56 -07:00
___rt_sigqueueinfo.S
Hide rt_sigqueueinfo.
2015-05-18 11:29:20 -07:00
__accept4.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__brk.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__clock_gettime.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__clock_nanosleep.S
Add clock_settime and clock_nanosleep.
2014-10-13 17:04:10 -07:00
__connect.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__epoll_pwait.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__exit.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__fadvise64.S
Add posix_fadvise(3).
2014-09-11 08:45:46 -07:00
__fstatfs.S
Hide statfs/fstatfs' ST_VALID flag from userspace.
2015-03-18 15:46:48 -07:00
__getcpu.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__getcwd.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__getdents64.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__getpid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__getpriority.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__gettimeofday.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__ioctl.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__openat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__ppoll.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__pselect6.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__ptrace.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__reboot.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__rt_sigaction.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__rt_sigpending.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__rt_sigprocmask.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__rt_sigsuspend.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__rt_sigtimedwait.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__sched_getaffinity.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__set_tid_address.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__signalfd4.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__socket.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__statfs.S
Hide statfs/fstatfs' ST_VALID flag from userspace.
2015-03-18 15:46:48 -07:00
__timer_create.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__timer_delete.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__timer_getoverrun.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__timer_gettime.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__timer_settime.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
__waitid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
_exit.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
acct.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
bind.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
capget.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
capset.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
chdir.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
chroot.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
clock_getres.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
clock_settime.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
delete_module.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
dup3.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
dup.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
epoll_create1.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
epoll_ctl.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
eventfd.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
execve.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fallocate.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
fchdir.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fchown.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fchownat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fcntl.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fdatasync.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
flistxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
flock.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fremovexattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
fstat64.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
fstatat64.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
fsync.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
ftruncate.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
getegid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
geteuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getgroups.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getitimer.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getpeername.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getpgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getppid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getresgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getresuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getrlimit.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
getrusage.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getsid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getsockname.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getsockopt.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
getxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
init_module.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
inotify_add_watch.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
inotify_init1.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
inotify_rm_watch.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
kill.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
klogctl.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
lgetxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
linkat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
listen.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
listxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
llistxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
lremovexattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
lseek.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
lsetxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
madvise.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mincore.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mkdirat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mknodat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mlock.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mlockall.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mmap.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
mount.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mprotect.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
mremap.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
msync.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
munlock.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
munlockall.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
munmap.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
nanosleep.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
personality.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
pipe2.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
prctl.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
pread64.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
prlimit64.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
pwrite64.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
read.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
readahead.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
readlinkat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
readv.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
recvfrom.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
recvmmsg.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
recvmsg.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
removexattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
renameat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_get_priority_max.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_get_priority_min.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_getparam.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_getscheduler.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_rr_get_interval.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_setaffinity.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_setparam.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_setscheduler.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sched_yield.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sendfile.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
sendmmsg.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sendmsg.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sendto.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setfsgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setfsuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setgroups.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sethostname.S
Add sethostname(2).
2014-11-07 16:48:27 -08:00
setitimer.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setns.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setpgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setpriority.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setregid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setresgid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setresuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setreuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setrlimit.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
setsid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setsockopt.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
settimeofday.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setuid.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
setxattr.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
shutdown.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sigaltstack.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
socketpair.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
splice.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
swapoff.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
swapon.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
symlinkat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sync.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
sysinfo.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
tee.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
tgkill.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
timerfd_create.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
timerfd_gettime.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
timerfd_settime.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
times.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
truncate.S
Make gensyscalls.py use the ALIAS_SYMBOL macro.
2015-03-24 21:08:26 -07:00
umask.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
umount2.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
uname.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
unlinkat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
unshare.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
utimensat.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
vmsplice.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
wait4.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
write.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00
writev.S
Ensure __set_errno is still visible on LP32.
2014-09-08 16:46:50 -07:00