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<p style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; -qt-user-state:0;">
在 2018年4月23日星期一 CST 下午11:54:26，Michael Biebl 写道：</p>
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> > I can use statx outside of the container, but always get EPERM in it.</p>
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> > I didn't set filters myself, just use the default ones.</p>
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> > The problem does not exsist with amd64 hosts.</p>
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> </p>
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> Please share more details about your setup:</p>
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> - What commands you use to create the chroot</p>
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`debootstrap sid /var/lib/machines/ci_buster`</p>
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Then chroot to it and install dbus and dev pkgs.</p>
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> - What exact command line you use to start the nspawn container</p>
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`systemctl start systemd-nspawn@ci_buster`</p>
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</p>
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The nspawn file is:</p>
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```</p>
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<span style=" font-family:'monospace'; color:#000000; background-color:#ffffff;">[Exec]
</span><span style=" font-family:'monospace';"><br>
Boot=yes <br>
PrivateUsers=no <br>
<br>
[Network] <br>
VirtualEthernet=yes</span></p>
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```</p>
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</p>
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> - What command exactly you run inside the container</p>
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Just compile and run this c file:</p>
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```</p>
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<span style=" font-family:'monospace'; color:#000000; background-color:#ffffff;">#define _GNU_SOURCE
</span><span style=" font-family:'monospace';"><br>
<br>
#include <stdio.h> <br>
<br>
#include <unistd.h> <br>
#include <sys/types.h> <br>
#include <sys/stat.h> <br>
#include <linux/stat.h> <br>
#include <fcntl.h> <br>
#include <sys/syscall.h> <br>
#include <string.h> <br>
#include <errno.h> <br>
<br>
static inline ssize_t statx(int dirfd, const char *pathname, int flags, unsigned int mask, struct statx *statxbuf)
<br>
{ <br>
return syscall(__NR_statx, dirfd, pathname, flags, mask, statxbuf); <br>
} <br>
<br>
int main(int argc, char *argv[]) <br>
{ <br>
struct statx sx; <br>
int ret = statx(AT_FDCWD, "/tmp/aaa", AT_NO_AUTOMOUNT | AT_SYMLINK_NOFOLLOW, STATX_SIZE, &sx);
<br>
fprintf(stdout, "ret: %d, error: %s, size: %lu\n",ret, strerror(errno), sx.stx_size);
<br>
return 0; <br>
}</span></p>
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```</p>
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Will get the 'Operation is not permited' message if run inside the container.</p>
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