> If we can't figure it out from her replies to our *many* requests for
> additional information, then my next request would be to strace it,
> and see exactly which system call is failing.
$ LANG=C strace cp -p test.sh /tmp
execve("/usr/bin/cp", ["cp", "-p", "test.sh", "/tmp"], 0x7ffe58e09538 /* 33
vars */) = 0
brk(NULL) = 0x561646694000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f2776e92000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=251839, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 251839, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f2776e54000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=182504, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 190160, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2776e25000
mmap(0x7f2776e2c000, 114688, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f2776e2c000
mmap(0x7f2776e48000, 32768, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x23000) = 0x7f2776e48000
mmap(0x7f2776e50000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2b000) = 0x7f2776e50000
mmap(0x7f2776e52000, 5840, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f2776e52000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=38832, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 41008, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2776e1a000
mmap(0x7f2776e1c000, 20480, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2776e1c000
mmap(0x7f2776e21000, 8192, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x7000) = 0x7f2776e21000
mmap(0x7f2776e23000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0x7f2776e23000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=26544, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 28696, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2776e12000
mmap(0x7f2776e14000, 12288, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2776e14000
mmap(0x7f2776e17000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x5000) = 0x7f2776e17000
mmap(0x7f2776e18000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5000) = 0x7f2776e18000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/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\0P~\2\0\0\0\0\0"..., 832)
= 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"...,
784, 64) = 784
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=1933688, ...}, AT_EMPTY_PATH)
= 0
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"...,
784, 64) = 784
mmap(NULL, 1985936, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2776c2d000
mmap(0x7f2776c53000, 1404928, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7f2776c53000
mmap(0x7f2776daa000, 348160, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x17d000) = 0x7f2776daa000
mmap(0x7f2776dff000, 24576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1d1000) = 0x7f2776dff000
mmap(0x7f2776e05000, 52624, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f2776e05000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpcre2-8.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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=633480, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 631688, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f2776b92000
mmap(0x7f2776b94000, 442368, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f2776b94000
mmap(0x7f2776c00000, 176128, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x6e000) = 0x7f2776c00000
mmap(0x7f2776c2b000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x99000) = 0x7f2776c2b000
close(3) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f2776b90000
arch_prctl(ARCH_SET_FS, 0x7f2776b91540) = 0
set_tid_address(0x7f2776b91810) = 195619
set_robust_list(0x7f2776b91820, 24) = 0
rseq(0x7f2776b91e60, 0x20, 0, 0x53053053) = 0
mprotect(0x7f2776dff000, 16384, PROT_READ) = 0
mprotect(0x7f2776c2b000, 4096, PROT_READ) = 0
mprotect(0x7f2776e18000, 4096, PROT_READ) = 0
mprotect(0x7f2776e23000, 4096, PROT_READ) = 0
mprotect(0x7f2776e50000, 4096, PROT_READ) = 0
mprotect(0x561616c18000, 4096, PROT_READ) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f2776b8e000
mprotect(0x7f2776eca000, 8192, PROT_READ) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024,
rlim_max=RLIM64_INFINITY}) = 0
munmap(0x7f2776e54000, 251839) = 0
statfs("/sys/fs/selinux", 0x7fffbb4e2da0) = -1 ENOENT (No such file or
directory)
statfs("/selinux", 0x7fffbb4e2da0) = -1 ENOENT (No such file or directory)
getrandom("\x62\x43\x33\x60\xb7\x6c\xd7\x9a", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x561646694000
brk(0x5616466b5000) = 0x5616466b5000
openat(AT_FDCWD, "/proc/filesystems", O_RDONLY|O_CLOEXEC) = 3
newfstatat(3, "", {st_mode=S_IFREG|0444, st_size=0, ...}, AT_EMPTY_PATH) = 0
read(3, "nodev\tsysfs\nnodev\ttmpfs\nnodev\tbd"..., 1024) = 414
read(3, "", 1024) = 0
close(3) = 0
access("/etc/selinux/config", F_OK) = -1 ENOENT (No such file or directory)
geteuid() = 1517
openat(AT_FDCWD, "/tmp", O_RDONLY|O_PATH|O_DIRECTORY) = 3
newfstatat(AT_FDCWD, "test.sh", {st_mode=S_IFREG|0750, st_size=300, ...}, 0) = 0
newfstatat(3, "test.sh", {st_mode=S_IFREG|0750, st_size=300, ...}, 0) = 0
openat(AT_FDCWD, "test.sh", O_RDONLY) = 4
newfstatat(4, "", {st_mode=S_IFREG|0750, st_size=300, ...}, AT_EMPTY_PATH) = 0
openat(3, "test.sh", O_WRONLY|O_TRUNC) = 5
ioctl(5, BTRFS_IOC_CLONE or FICLONE, 4) = -1 EXDEV (Invalid cross-device link)
newfstatat(5, "", {st_mode=S_IFREG|0750, st_size=0, ...}, AT_EMPTY_PATH) = 0
fadvise64(4, 0, 0, POSIX_FADV_SEQUENTIAL) = 0
uname({sysname="Linux", nodename="XXXXXXXXXX", ...}) = 0
copy_file_range(4, NULL, 5, NULL, 9223372035781033984, 0) = -1 EXDEV (Invalid
cross-device link)
mmap(NULL, 1056768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f2776a8c000
read(4, "#!/usr/bin/sh\n\nexport LANG=C\nls "..., 1048576) = 300
write(5, "#!/usr/bin/sh\n\nexport LANG=C\nls "..., 300) = 300
read(4, "", 1048576) = 0
utimensat(5, NULL, [{tv_sec=1720514858, tv_nsec=250366226} /*
2024-07-09T10:47:38.250366226+0200 */, {tv_sec=1720514761, tv_nsec=246516944}
/* 2024-07-09T10:46:01.246516944+0200 */], 0) = 0
fchmod(5, 0100750) = 0
flistxattr(4, NULL, 0) = 16
flistxattr(4, "system.nfs4_acl\0", 16) = 16
openat(AT_FDCWD, "/etc/xattr.conf", O_RDONLY) = 6
newfstatat(6, "", {st_mode=S_IFREG|0644, st_size=681, ...}, AT_EMPTY_PATH) = 0
read(6, "# /etc/xattr.conf\n#\n# Format:\n# "..., 4096) = 681
read(6, "", 4096) = 0
close(6) = 0
fgetxattr(4, "system.nfs4_acl", NULL, 0) = 80
fgetxattr(4, "system.nfs4_acl",
"\0\0\0\3\0\0\0\0\0\0\0\0\0\26\1\247\0\0\0\6OWNER@\0\0\0\0\0", 80) = 80
fsetxattr(5, "system.nfs4_acl",
"\0\0\0\3\0\0\0\0\0\0\0\0\0\26\1\247\0\0\0\6OWNER@\0\0\0\0\0", 80, 0) = -1
EOPNOTSUPP (Operation not supported)
write(2, "cp: ", 4cp: ) = 4
write(2, "preserving permissions for '/tmp"..., 41preserving permissions for
'/tmp/test.sh') = 41
write(2, ": Operation not supported", 25: Operation not supported) = 25
write(2, "\n", 1
) = 1
close(5) = 0
close(4) = 0
munmap(0x7f2776a8c000, 1056768) = 0
lseek(0, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
close(0) = 0
close(1) = 0
close(2) = 0
exit_group(1) = ?
+++ exited with 1 +++
$ cat /etc/xattr.conf
# /etc/xattr.conf
#
# Format:
# <pattern> <action>
#
# Actions:
# permissions - copy when trying to preserve permissions.
# skip - do not copy.
system.nfs4_acl permissions
system.nfs4acl permissions
system.posix_acl_access permissions
system.posix_acl_default permissions
trusted.SGI_ACL_DEFAULT skip # xfs specific
trusted.SGI_ACL_FILE skip # xfs specific
trusted.SGI_CAP_FILE skip # xfs specific
trusted.SGI_DMI_* skip # xfs specific
trusted.SGI_MAC_FILE skip # xfs specific
xfsroot.* skip # xfs specific; obsolete
user.Beagle.* skip # ignore Beagle index data
security.evm skip # may only be written by kernel
afs.* skip # AFS metadata and ACLs
$ mount | grep patrice
/home/patrice type nfs4
(rw,nosuid,nodev,relatime,vers=4.2,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=X,local_lock=none,addr=Y)
Finally, note that I am a «he» otherwise in French it's generally Patricia for
«her»
:-D
