I have now tested with R version 3.6.0 Patched (2019-05-12 r76489) and
I confirm that staged install now works on our problematic file
system.
Thank you again for fixing this.
/Henrik
On Thu, May 9, 2019 at 5:43 AM Tomas Kalibera <tomas.kalib...@gmail.com> wrote:
>
> On 5/7/19 6:18 PM, Henrik Bengtsson wrote:
> > On Tue, May 7, 2019 at 9:05 AM Tomas Kalibera <tomas.kalib...@gmail.com>
> > wrote:
> >> Thanks for the report. According to my reading, this use of "mv" is ok
> >> and the renameat2() call which the invocation of "mv" leads to is also
> >> ok and allowed by POSIX in this context. It could only fail with EEXIST
> >> if the target directory (path/pkg) was not empty. So far I've not been
> >> able to reproduce but we could fall back to copy like on Windows.
> > Thanks for looking into this. The purpose of the pre-existing target
> > directory (path/pkg) is to act as a directory lock in order to lower
> > the risk for parallel installation to take place at the same - is that
> > correct? For the same reason, you can't just do
> >
> > mv path/pkg path/pkg-quickly-now
> > mv -f path/to/pkg path
> > rmdir path/pkg-quickly-now
> >
> > because there's a potential race condition?
>
> pkg (the final installation directory) should be empty when we are doing
> the move - and I understood from your report you actually reproduced
> outside R with the target directory being empty. Moving it away is the
> same as deleting it. Which is what I did now in R-devel, and which is
> what the current code has been doing already on Windows. It is a race
> condition, but I don't think it is avoidable and I doubt that
> "mv/rename" could be relied on doing the move atomically when the target
> directory exists, when not broken to do the move at all. Still,
> according to POSIX, mv/renameat should work in this context with the
> target being an empty directory, it works on my systems and that it does
> not on some is probably a bug. Likewise, from my reading of the
> documentation of MoveFileEx, the file rename should also work on Windows
> with the empty target directory with the flags we use (and it is also
> implied in CERT advisory FIO10-C), but contradicts what I am seeing on
> my system. This is why I had added the deletion on Windows before.
> Pragmatically, there is probably no point into trying to fine-tune this
> any more, because apart from the move happening, we don't have universal
> guarantees that the move will be atomic. But of course we have to make
> sure the installation always works, so thanks again for reporting this.
>
> > For efficiency, to avoid copying, could one do "atomic" moves one
> > layer down? Something like:
> >
> > mv path/to/pkg/* path/to/pkg/.* path/pkg
> > rmdir path/pkg
> >
> > because, in this case, we know that path/pkg/ is empty.
>
> Yes, but as it seems that the bug in mv/renameat is rare, maybe this is
> not worth the added complexity/maintenance cost. And with the current
> solution - delete the target directory, but still try the move - we
> still have some hope of avoiding exposure of a partially installed
> package (a package that already has a DESCRIPTION file, but is not yet
> completely installed).
>
> Best
> Tomas
>
> >
> > /Henrik
> >
> >
> >> Best
> >> Tomas
> >>
> >>
> >> On 5/5/19 4:35 AM, Henrik Bengtsson wrote:
> >>> I'm observing that the new staged installation in R 3.6.0 can produce:
> >>>
> >>> mv: cannot move
> >>> ‘/home/alice/R/x86_64-pc-linux-gnu-library/3.6/00LOCK-codetools/00new/codetools’
> >>> to ‘/home/alice/R/x86_64-pc-linux-gnu-library/3.6/codetools’: File
> >>> exists
> >>> ERROR: moving to final location failed
> >>>
> >>> on some file systems.
> >>>
> >>> # EXAMPLE
> >>>
> >>> $ R --vanilla
> >>> R version 3.6.0 (2019-04-26) -- "Planting of a Tree"
> >>> Copyright (C) 2019 The R Foundation for Statistical Computing
> >>> Platform: x86_64-pc-linux-gnu (64-bit)
> >>> ...
> >>>
> >>>> install.packages("codetools", repos="https://cran.r-project.org";)
> >>> Installing package into
> >>> ‘/wynton/home/cbi/hb/R/x86_64-pc-linux-gnu-library/3.6’
> >>> (as ‘lib’ is unspecified)
> >>> trying URL
> >>> 'https://cran.r-project.org/src/contrib/codetools_0.2-16.tar.gz'
> >>> Content type 'application/x-gzip' length 12996 bytes (12 KB)
> >>> ==================================================
> >>> downloaded 12 KB
> >>>
> >>> * installing *source* package ‘codetools’ ...
> >>> ** package ‘codetools’ successfully unpacked and MD5 sums checked
> >>> ** using staged installation
> >>> ** R
> >>> ** byte-compile and prepare package for lazy loading
> >>> ** help
> >>> *** installing help indices
> >>> ** building package indices
> >>> ** testing if installed package can be loaded from temporary location
> >>> mv: cannot move
> >>> ‘/home/alice/R/x86_64-pc-linux-gnu-library/3.6/00LOCK-codetools/00new/codetools’
> >>> to ‘/home/alice/R/x86_64-pc-linux-gnu-library/3.6/codetools’: File
> >>> exists
> >>> ERROR: moving to final location failed
> >>> * removing ‘/home/alice/R/x86_64-pc-linux-gnu-library/3.6/codetools’
> >>>
> >>> The downloaded source packages are in
> >>> ‘/scratch/alice/Rtmp6UYDzu/downloaded_packages’
> >>> Warning message:
> >>> In install.packages("codetools", repos = "https://cran.r-project.org";) :
> >>> installation of package ‘codetools’ had non-zero exit status
> >>>
> >>>
> >>> # WORKAROUND
> >>>
> >>> Disabling staged installation, for instance by setting environment
> >>> variable 'R_INSTALL_STAGED=false' avoids this problem.
> >>>
> >>>
> >>> # TROUBLESHOOTING
> >>>
> >>> I think it comes down to the following call in
> >>> src/library/tools/R/install.R:
> >>>
> >>> status <- system(paste("mv -f",
> >>> shQuote(instdir),
> >>> shQuote(dirname(final_instdir))))
> >>>
> >>> https://github.com/wch/r-source/blob/d253331f578814f919f150ffdf1fe581618079a3/src/library/tools/R/install.R#L1645-L1647
> >>>
> >>> which effectively does:
> >>>
> >>> $ mkdir -p path/pkg ## empty final destination placeholder(?)
> >>> $ mkdir -p path/to/pkg
> >>> $ mv -f path/to/pkg path
> >>>
> >>> However, on one (and only one) of several systems I've tested, that
> >>> 'mv' produce the error:
> >>>
> >>> mv: cannot move ‘path/to/pkg’ to ‘path/pkg’: File exists
> >>>
> >>> This is on a BeeGFS parallel file system. I cannot tell if that 'mv
> >>> -f' should work or not, or if it is even well defined. FWIW, the
> >>> above 'mv' does indeed work if I switch to another folder that is
> >>> mounted on a different, NFS, file system, i.e. it is not kernel/OS
> >>> specific (here CentOS 7.6.1810).
> >>>
> >>> If of any use, here's the 'strace' of the above 'mv':
> >>>
> >>> $ strace mv -f path/to/pkg path
> >>> execve("/usr/bin/mv", ["mv", "-f", "path/to/pkg", "path"], [/* 118 vars
> >>> */]) = 0
> >>> brk(NULL) = 0xcf3000
> >>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x7fde2ceb1000
> >>> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
> >>> directory)
> >>> open("/usr/lib64/openmpi/lib/tls/x86_64/libselinux.so.1",
> >>> O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
> >>> stat("/usr/lib64/openmpi/lib/tls/x86_64", 0x7ffc6a3fb170) = -1 ENOENT
> >>> (No such file or directory)
> >>> open("/usr/lib64/openmpi/lib/tls/libselinux.so.1", O_RDONLY|O_CLOEXEC)
> >>> = -1 ENOENT (No such file or directory)
> >>> stat("/usr/lib64/openmpi/lib/tls", 0x7ffc6a3fb170) = -1 ENOENT (No
> >>> such file or directory)
> >>> open("/usr/lib64/openmpi/lib/x86_64/libselinux.so.1",
> >>> O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
> >>> stat("/usr/lib64/openmpi/lib/x86_64", 0x7ffc6a3fb170) = -1 ENOENT (No
> >>> such file or directory)
> >>> open("/usr/lib64/openmpi/lib/libselinux.so.1", O_RDONLY|O_CLOEXEC) =
> >>> -1 ENOENT (No such file or directory)
> >>> stat("/usr/lib64/openmpi/lib", {st_mode=S_IFDIR|0755, st_size=4096, ...})
> >>> = 0
> >>> open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
> >>> fstat(3, {st_mode=S_IFREG|0644, st_size=96960, ...}) = 0
> >>> mmap(NULL, 96960, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fde2ce99000
> >>> close(3) = 0
> >>> open("/lib64/libselinux.so.1", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320i\0\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=155784, ...}) = 0
> >>> mmap(NULL, 2255184, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2ca6a000
> >>> mprotect(0x7fde2ca8e000, 2093056, PROT_NONE) = 0
> >>> mmap(0x7fde2cc8d000, 8192, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x23000) = 0x7fde2cc8d000
> >>> mmap(0x7fde2cc8f000, 6480, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fde2cc8f000
> >>> close(3) = 0
> >>> open("/usr/lib64/openmpi/lib/libacl.so.1", O_RDONLY|O_CLOEXEC) = -1
> >>> ENOENT (No such file or directory)
> >>> open("/lib64/libacl.so.1", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\200\37\0\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=37056, ...}) = 0
> >>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x7fde2ce98000
> >>> mmap(NULL, 2130560, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2c861000
> >>> mprotect(0x7fde2c868000, 2097152, PROT_NONE) = 0
> >>> mmap(0x7fde2ca68000, 8192, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7fde2ca68000
> >>> close(3) = 0
> >>> open("/usr/lib64/openmpi/lib/libattr.so.1", O_RDONLY|O_CLOEXEC) = -1
> >>> ENOENT (No such file or directory)
> >>> open("/lib64/libattr.so.1", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\23\0\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=19896, ...}) = 0
> >>> mmap(NULL, 2113904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2c65c000
> >>> mprotect(0x7fde2c660000, 2093056, PROT_NONE) = 0
> >>> mmap(0x7fde2c85f000, 8192, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x7fde2c85f000
> >>> close(3) = 0
> >>> open("/usr/lib64/openmpi/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = -1
> >>> ENOENT (No such file or directory)
> >>> open("/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340$\2\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=2151672, ...}) = 0
> >>> mmap(NULL, 3981792, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2c28f000
> >>> mprotect(0x7fde2c451000, 2097152, PROT_NONE) = 0
> >>> mmap(0x7fde2c651000, 24576, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c2000) = 0x7fde2c651000
> >>> mmap(0x7fde2c657000, 16864, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fde2c657000
> >>> close(3) = 0
> >>> open("/usr/lib64/openmpi/lib/libpcre.so.1", O_RDONLY|O_CLOEXEC) = -1
> >>> ENOENT (No such file or directory)
> >>> open("/lib64/libpcre.so.1", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\25\0\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=402384, ...}) = 0
> >>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x7fde2ce97000
> >>> mmap(NULL, 2494984, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2c02d000
> >>> mprotect(0x7fde2c08d000, 2097152, PROT_NONE) = 0
> >>> mmap(0x7fde2c28d000, 8192, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x60000) = 0x7fde2c28d000
> >>> close(3) = 0
> >>> open("/usr/lib64/openmpi/lib/libdl.so.2", O_RDONLY|O_CLOEXEC) = -1
> >>> ENOENT (No such file or directory)
> >>> open("/lib64/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220\r\0\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=19288, ...}) = 0
> >>> mmap(NULL, 2109712, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2be29000
> >>> mprotect(0x7fde2be2b000, 2097152, PROT_NONE) = 0
> >>> mmap(0x7fde2c02b000, 8192, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7fde2c02b000
> >>> close(3) = 0
> >>> open("/usr/lib64/openmpi/lib/libpthread.so.0", O_RDONLY|O_CLOEXEC) =
> >>> -1 ENOENT (No such file or directory)
> >>> open("/lib64/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
> >>> read(3,
> >>> "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260l\0\0\0\0\0\0"...,
> >>> 832) = 832
> >>> fstat(3, {st_mode=S_IFREG|0755, st_size=141968, ...}) = 0
> >>> mmap(NULL, 2208904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
> >>> 0) = 0x7fde2bc0d000
> >>> mprotect(0x7fde2bc24000, 2093056, PROT_NONE) = 0
> >>> mmap(0x7fde2be23000, 8192, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0x7fde2be23000
> >>> mmap(0x7fde2be25000, 13448, PROT_READ|PROT_WRITE,
> >>> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fde2be25000
> >>> close(3) = 0
> >>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x7fde2ce96000
> >>> mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x7fde2ce94000
> >>> arch_prctl(ARCH_SET_FS, 0x7fde2ce94840) = 0
> >>> mprotect(0x7fde2c651000, 16384, PROT_READ) = 0
> >>> mprotect(0x7fde2be23000, 4096, PROT_READ) = 0
> >>> mprotect(0x7fde2c02b000, 4096, PROT_READ) = 0
> >>> mprotect(0x7fde2c28d000, 4096, PROT_READ) = 0
> >>> mprotect(0x7fde2c85f000, 4096, PROT_READ) = 0
> >>> mprotect(0x7fde2ca68000, 4096, PROT_READ) = 0
> >>> mprotect(0x7fde2cc8d000, 4096, PROT_READ) = 0
> >>> mprotect(0x61d000, 4096, PROT_READ) = 0
> >>> mprotect(0x7fde2ceb2000, 4096, PROT_READ) = 0
> >>> munmap(0x7fde2ce99000, 96960) = 0
> >>> set_tid_address(0x7fde2ce94b10) = 85521
> >>> set_robust_list(0x7fde2ce94b20, 24) = 0
> >>> rt_sigaction(SIGRTMIN, {0x7fde2bc13790, [], SA_RESTORER|SA_SIGINFO,
> >>> 0x7fde2bc1c5d0}, NULL, 8) = 0
> >>> rt_sigaction(SIGRT_1, {0x7fde2bc13820, [],
> >>> SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7fde2bc1c5d0}, NULL, 8) = 0
> >>> rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
> >>> getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = > >>> 0
> >>> statfs("/sys/fs/selinux", {f_type=SELINUX_MAGIC, f_bsize=4096,
> >>> f_blocks=0, f_bfree=0, f_bavail=0, f_files=0, f_ffree=0, f_fsid={0,
> >>> 0}, f_namelen=255, f_frsize=4096, f_flags=ST_VALID|ST_RELATIME}) = 0
> >>> statfs("/sys/fs/selinux", {f_type=SELINUX_MAGIC, f_bsize=4096,
> >>> f_blocks=0, f_bfree=0, f_bavail=0, f_files=0, f_ffree=0, f_fsid={0,
> >>> 0}, f_namelen=255, f_frsize=4096, f_flags=ST_VALID|ST_RELATIME}) = 0
> >>> stat("/sys/fs/selinux", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
> >>> brk(NULL) = 0xcf3000
> >>> brk(0xd14000) = 0xd14000
> >>> access("/etc/selinux/config", F_OK) = 0
> >>> open("/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
> >>> fstat(3, {st_mode=S_IFREG|0644, st_size=106075056, ...}) = 0
> >>> mmap(NULL, 106075056, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fde256e3000
> >>> close(3) = 0
> >>> geteuid() = 34002
> >>> ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
> >>> stat("path", {st_mode=S_IFDIR|0755, st_size=2, ...}) = 0
> >>> lstat("path/to/pkg", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
> >>> lstat("path/pkg", {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0
> >>> renameat2(AT_FDCWD, "path/to/pkg", AT_FDCWD, "path/pkg", 0) = -1
> >>> EEXIST (File exists)
> >>> open("/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3
> >>> fstat(3, {st_mode=S_IFREG|0644, st_size=2502, ...}) = 0
> >>> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> >>> 0) = 0x7fde2ceb0000
> >>> read(3, "# Locale name alias data base.\n#"..., 4096) = 2502
> >>> read(3, "", 4096) = 0
> >>> close(3) = 0
> >>> munmap(0x7fde2ceb0000, 4096) = 0
> >>> open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/coreutils.mo",
> >>> O_RDONLY) = -1 ENOENT (No such file or directory)
> >>> open("/usr/share/locale/en_US.utf8/LC_MESSAGES/coreutils.mo",
> >>> O_RDONLY) = -1 ENOENT (No such file or directory)
> >>> open("/usr/share/locale/en_US/LC_MESSAGES/coreutils.mo", O_RDONLY) =
> >>> -1 ENOENT (No such file or directory)
> >>> open("/usr/share/locale/en.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY)
> >>> = -1 ENOENT (No such file or directory)
> >>> open("/usr/share/locale/en.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) =
> >>> -1 ENOENT (No such file or directory)
> >>> open("/usr/share/locale/en/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1
> >>> ENOENT (No such file or directory)
> >>> open("/usr/lib64/charset.alias", O_RDONLY|O_NOFOLLOW) = -1 ENOENT (No
> >>> such file or directory)
> >>> write(2, "mv: ", 4mv: ) = 4
> >>> write(2, "cannot move \342\200\230path/to/pkg\342\200\231 to"...,
> >>> 47cannot move ‘path/to/pkg’ to ‘path/pkg’) = 47
> >>> 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, ": File exists", 13: File exists) = 13
> >>> write(2, "\n", 1
> >>> ) = 1
> >>> lseek(0, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
> >>> close(0) = 0
> >>> close(1) = 0
> >>> close(2) = 0
> >>> exit_group(1) = ?
> >>> +++ exited with 1 +++
> >>>
> >>> /Henrik
> >>>
> >>> ______________________________________________
> >>> R-devel@r-project.org mailing list
> >>> https://stat.ethz.ch/mailman/listinfo/r-devel
> >>
>
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