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Chen Yisong
lxc
Commits
74ed30d7
Unverified
Commit
74ed30d7
authored
Feb 05, 2021
by
Christian Brauner
Browse files
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Plain Diff
mount_utils: move mount_at() and mount_from_at() over from utils.{c,h}
Signed-off-by:
Christian Brauner
<
christian.brauner@ubuntu.com
>
parent
b5daeddc
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7 changed files
with
155 additions
and
114 deletions
+155
-114
Makefile.am
src/lxc/Makefile.am
+25
-0
cgfsng.c
src/lxc/cgroups/cgfsng.c
+1
-0
mount_utils.c
src/lxc/mount_utils.c
+104
-0
mount_utils.h
src/lxc/mount_utils.h
+13
-0
utils.c
src/lxc/utils.c
+0
-104
utils.h
src/lxc/utils.h
+0
-10
Makefile.am
src/tests/Makefile.am
+12
-0
No files found.
src/lxc/Makefile.am
View file @
74ed30d7
...
@@ -356,6 +356,7 @@ lxc_attach_SOURCES += af_unix.c af_unix.h \
...
@@ -356,6 +356,7 @@ lxc_attach_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -413,6 +414,7 @@ lxc_autostart_SOURCES += af_unix.c af_unix.h \
...
@@ -413,6 +414,7 @@ lxc_autostart_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -469,6 +471,7 @@ lxc_cgroup_SOURCES += af_unix.c af_unix.h \
...
@@ -469,6 +471,7 @@ lxc_cgroup_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -525,6 +528,7 @@ lxc_config_SOURCES += af_unix.c af_unix.h \
...
@@ -525,6 +528,7 @@ lxc_config_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -581,6 +585,7 @@ lxc_console_SOURCES += af_unix.c af_unix.h \
...
@@ -581,6 +585,7 @@ lxc_console_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -637,6 +642,7 @@ lxc_destroy_SOURCES += af_unix.c af_unix.h \
...
@@ -637,6 +642,7 @@ lxc_destroy_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -693,6 +699,7 @@ lxc_device_SOURCES += af_unix.c af_unix.h \
...
@@ -693,6 +699,7 @@ lxc_device_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -749,6 +756,7 @@ lxc_execute_SOURCES += af_unix.c af_unix.h \
...
@@ -749,6 +756,7 @@ lxc_execute_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -805,6 +813,7 @@ lxc_freeze_SOURCES += af_unix.c af_unix.h \
...
@@ -805,6 +813,7 @@ lxc_freeze_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -861,6 +870,7 @@ lxc_info_SOURCES += af_unix.c af_unix.h \
...
@@ -861,6 +870,7 @@ lxc_info_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -918,6 +928,7 @@ lxc_monitor_SOURCES += af_unix.c af_unix.h \
...
@@ -918,6 +928,7 @@ lxc_monitor_SOURCES += af_unix.c af_unix.h \
macro.h
\
macro.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -975,6 +986,7 @@ lxc_ls_SOURCES += af_unix.c af_unix.h \
...
@@ -975,6 +986,7 @@ lxc_ls_SOURCES += af_unix.c af_unix.h \
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
memory_utils.h
\
memory_utils.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1031,6 +1043,7 @@ lxc_copy_SOURCES += af_unix.c af_unix.h \
...
@@ -1031,6 +1043,7 @@ lxc_copy_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1087,6 +1100,7 @@ lxc_start_SOURCES += af_unix.c af_unix.h \
...
@@ -1087,6 +1100,7 @@ lxc_start_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1143,6 +1157,7 @@ lxc_stop_SOURCES += af_unix.c af_unix.h \
...
@@ -1143,6 +1157,7 @@ lxc_stop_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1199,6 +1214,7 @@ lxc_top_SOURCES += af_unix.c af_unix.h \
...
@@ -1199,6 +1214,7 @@ lxc_top_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1255,6 +1271,7 @@ lxc_unfreeze_SOURCES += af_unix.c af_unix.h \
...
@@ -1255,6 +1271,7 @@ lxc_unfreeze_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1311,6 +1328,7 @@ lxc_unshare_SOURCES += af_unix.c af_unix.h \
...
@@ -1311,6 +1328,7 @@ lxc_unshare_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1369,6 +1387,7 @@ lxc_wait_SOURCES += af_unix.c af_unix.h \
...
@@ -1369,6 +1387,7 @@ lxc_wait_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1425,6 +1444,7 @@ lxc_create_SOURCES += af_unix.c af_unix.h \
...
@@ -1425,6 +1444,7 @@ lxc_create_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1481,6 +1501,7 @@ lxc_snapshot_SOURCES += af_unix.c af_unix.h \
...
@@ -1481,6 +1501,7 @@ lxc_snapshot_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1537,6 +1558,7 @@ lxc_checkpoint_SOURCES += af_unix.c af_unix.h \
...
@@ -1537,6 +1558,7 @@ lxc_checkpoint_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1608,6 +1630,7 @@ lxc_monitord_SOURCES += af_unix.c af_unix.h \
...
@@ -1608,6 +1630,7 @@ lxc_monitord_SOURCES += af_unix.c af_unix.h \
lxclock.c lxclock.h
\
lxclock.c lxclock.h
\
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1665,6 +1688,7 @@ lxc_user_nic_SOURCES += af_unix.c af_unix.h \
...
@@ -1665,6 +1688,7 @@ lxc_user_nic_SOURCES += af_unix.c af_unix.h \
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
memory_utils.h
\
memory_utils.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
@@ -1725,6 +1749,7 @@ lxc_usernsexec_SOURCES += af_unix.c af_unix.h \
...
@@ -1725,6 +1749,7 @@ lxc_usernsexec_SOURCES += af_unix.c af_unix.h \
mainloop.c mainloop.h
\
mainloop.c mainloop.h
\
memory_utils.h
\
memory_utils.h
\
monitor.c monitor.h
\
monitor.c monitor.h
\
mount_utils.c mount_utils.h
\
namespace.c namespace.h
\
namespace.c namespace.h
\
network.c network.h
\
network.c network.h
\
nl.c nl.h
\
nl.c nl.h
\
...
...
src/lxc/cgroups/cgfsng.c
View file @
74ed30d7
...
@@ -44,6 +44,7 @@
...
@@ -44,6 +44,7 @@
#include "macro.h"
#include "macro.h"
#include "mainloop.h"
#include "mainloop.h"
#include "memory_utils.h"
#include "memory_utils.h"
#include "mount_utils.h"
#include "storage/storage.h"
#include "storage/storage.h"
#include "syscall_wrappers.h"
#include "syscall_wrappers.h"
#include "utils.h"
#include "utils.h"
...
...
src/lxc/mount_utils.c
View file @
74ed30d7
...
@@ -138,3 +138,107 @@ int mount_filesystem(const char *fs_name, const char *path, unsigned int attr_fl
...
@@ -138,3 +138,107 @@ int mount_filesystem(const char *fs_name, const char *path, unsigned int attr_fl
mnt_attributes_old
(
attr_flags
,
&
old_flags
);
mnt_attributes_old
(
attr_flags
,
&
old_flags
);
return
mount
(
"none"
,
path
,
fs_name
,
old_flags
,
NULL
);
return
mount
(
"none"
,
path
,
fs_name
,
old_flags
,
NULL
);
}
}
int
mount_at
(
int
dfd
,
const
char
*
src_under_dfd
,
const
char
*
dst_under_dfd
,
__u64
o_flags
,
__u64
resolve_flags
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
)
{
__do_close
int
source_fd
=
-
EBADF
,
target_fd
=
-
EBADF
;
struct
lxc_open_how
how
=
{
.
flags
=
o_flags
,
.
resolve
=
resolve_flags
,
};
int
ret
;
char
src_buf
[
LXC_PROC_PID_FD_LEN
],
dst_buf
[
LXC_PROC_PID_FD_LEN
];
if
(
dfd
<
0
)
return
ret_errno
(
EINVAL
);
if
(
!
is_empty_string
(
src_buf
)
&&
*
src_buf
==
'/'
)
return
log_error_errno
(
-
EINVAL
,
EINVAL
,
"Absolute path specified"
);
if
(
!
is_empty_string
(
src_under_dfd
))
{
source_fd
=
openat2
(
dfd
,
src_under_dfd
,
&
how
,
sizeof
(
how
));
if
(
source_fd
<
0
)
return
-
errno
;
ret
=
snprintf
(
src_buf
,
sizeof
(
src_buf
),
"/proc/self/fd/%d"
,
source_fd
);
if
(
ret
<
0
||
ret
>=
sizeof
(
src_buf
))
return
-
EIO
;
}
if
(
!
is_empty_string
(
dst_under_dfd
))
{
target_fd
=
openat2
(
dfd
,
dst_under_dfd
,
&
how
,
sizeof
(
how
));
if
(
target_fd
<
0
)
return
log_error_errno
(
-
errno
,
errno
,
"Failed to open %d(%s)"
,
dfd
,
dst_under_dfd
);
TRACE
(
"Mounting %d(%s) through /proc/self/fd/%d"
,
target_fd
,
dst_under_dfd
,
target_fd
);
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
target_fd
);
}
else
{
TRACE
(
"Mounting %d through /proc/self/fd/%d"
,
dfd
,
dfd
);
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
dfd
);
}
if
(
ret
<
0
||
ret
>=
sizeof
(
dst_buf
))
return
-
EIO
;
if
(
!
is_empty_string
(
src_buf
))
ret
=
mount
(
src_buf
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
else
ret
=
mount
(
NULL
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
return
ret
;
}
int
mount_from_at
(
int
dfd_from
,
const
char
*
path_from
,
__u64
o_flags_from
,
__u64
resolve_flags_from
,
int
dfd_to
,
const
char
*
path_to
,
__u64
o_flags_to
,
__u64
resolve_flags_to
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
)
{
__do_close
int
fd_from
=
-
EBADF
,
fd_to
=
-
EBADF
;
struct
lxc_open_how
how
=
{};
int
ret
;
char
src_buf
[
LXC_PROC_PID_FD_LEN
],
dst_buf
[
LXC_PROC_PID_FD_LEN
];
if
(
is_empty_string
(
path_from
))
{
ret
=
snprintf
(
src_buf
,
sizeof
(
src_buf
),
"/proc/self/fd/%d"
,
dfd_from
);
}
else
{
how
.
flags
=
o_flags_from
;
how
.
resolve
=
resolve_flags_from
;
fd_from
=
openat2
(
dfd_from
,
path_from
,
&
how
,
sizeof
(
how
));
if
(
fd_from
<
0
)
return
-
errno
;
ret
=
snprintf
(
src_buf
,
sizeof
(
src_buf
),
"/proc/self/fd/%d"
,
fd_from
);
}
if
(
ret
<
0
||
ret
>=
sizeof
(
src_buf
))
return
-
EIO
;
if
(
is_empty_string
(
path_to
))
{
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
dfd_to
);
}
else
{
how
.
flags
=
o_flags_to
;
how
.
resolve
=
resolve_flags_to
;
fd_to
=
openat2
(
dfd_to
,
path_to
,
&
how
,
sizeof
(
how
));
if
(
fd_to
<
0
)
return
-
errno
;
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
fd_to
);
}
if
(
ret
<
0
||
ret
>=
sizeof
(
src_buf
))
return
-
EIO
;
if
(
is_empty_string
(
src_buf
))
ret
=
mount
(
NULL
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
else
ret
=
mount
(
src_buf
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
return
ret
;
}
src/lxc/mount_utils.h
View file @
74ed30d7
...
@@ -3,6 +3,7 @@
...
@@ -3,6 +3,7 @@
#ifndef __LXC_MOUNT_UTILS_H
#ifndef __LXC_MOUNT_UTILS_H
#define __LXC_MOUNT_UTILS_H
#define __LXC_MOUNT_UTILS_H
#include <linux/types.h>
#include <stdio.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdlib.h>
#include <sys/mount.h>
#include <sys/mount.h>
...
@@ -150,4 +151,16 @@ __hidden extern int mnt_attributes_old(unsigned int new_flags, unsigned int *old
...
@@ -150,4 +151,16 @@ __hidden extern int mnt_attributes_old(unsigned int new_flags, unsigned int *old
__hidden
extern
int
mount_filesystem
(
const
char
*
fs_name
,
const
char
*
path
,
unsigned
int
attr_flags
);
__hidden
extern
int
mount_filesystem
(
const
char
*
fs_name
,
const
char
*
path
,
unsigned
int
attr_flags
);
__hidden
extern
int
mount_at
(
int
dfd
,
const
char
*
src_under_dfd
,
const
char
*
dst_under_dfd
,
__u64
o_flags
,
__u64
resolve_flags
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
);
__hidden
extern
int
mount_from_at
(
int
dfd_from
,
const
char
*
path_from
,
__u64
o_flags_from
,
__u64
resolve_flags_from
,
int
dfd_to
,
const
char
*
path_to
,
__u64
o_flags_to
,
__u64
resolve_flags_to
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
);
#endif
/* __LXC_MOUNT_UTILS_H */
#endif
/* __LXC_MOUNT_UTILS_H */
src/lxc/utils.c
View file @
74ed30d7
...
@@ -1208,110 +1208,6 @@ int safe_mount(const char *src, const char *dest, const char *fstype,
...
@@ -1208,110 +1208,6 @@ int safe_mount(const char *src, const char *dest, const char *fstype,
return
0
;
return
0
;
}
}
int
mount_at
(
int
dfd
,
const
char
*
src_under_dfd
,
const
char
*
dst_under_dfd
,
__u64
o_flags
,
__u64
resolve_flags
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
)
{
__do_close
int
source_fd
=
-
EBADF
,
target_fd
=
-
EBADF
;
struct
lxc_open_how
how
=
{
.
flags
=
o_flags
,
.
resolve
=
resolve_flags
,
};
int
ret
;
char
src_buf
[
LXC_PROC_PID_FD_LEN
],
dst_buf
[
LXC_PROC_PID_FD_LEN
];
if
(
dfd
<
0
)
return
ret_errno
(
EINVAL
);
if
(
!
is_empty_string
(
src_buf
)
&&
*
src_buf
==
'/'
)
return
log_error_errno
(
-
EINVAL
,
EINVAL
,
"Absolute path specified"
);
if
(
!
is_empty_string
(
src_under_dfd
))
{
source_fd
=
openat2
(
dfd
,
src_under_dfd
,
&
how
,
sizeof
(
how
));
if
(
source_fd
<
0
)
return
-
errno
;
ret
=
snprintf
(
src_buf
,
sizeof
(
src_buf
),
"/proc/self/fd/%d"
,
source_fd
);
if
(
ret
<
0
||
ret
>=
sizeof
(
src_buf
))
return
-
EIO
;
}
if
(
!
is_empty_string
(
dst_under_dfd
))
{
target_fd
=
openat2
(
dfd
,
dst_under_dfd
,
&
how
,
sizeof
(
how
));
if
(
target_fd
<
0
)
return
log_error_errno
(
-
errno
,
errno
,
"Failed to open %d(%s)"
,
dfd
,
dst_under_dfd
);
TRACE
(
"Mounting %d(%s) through /proc/self/fd/%d"
,
target_fd
,
dst_under_dfd
,
target_fd
);
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
target_fd
);
}
else
{
TRACE
(
"Mounting %d through /proc/self/fd/%d"
,
dfd
,
dfd
);
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
dfd
);
}
if
(
ret
<
0
||
ret
>=
sizeof
(
dst_buf
))
return
-
EIO
;
if
(
!
is_empty_string
(
src_buf
))
ret
=
mount
(
src_buf
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
else
ret
=
mount
(
NULL
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
return
ret
;
}
int
mount_from_at
(
int
dfd_from
,
const
char
*
path_from
,
__u64
o_flags_from
,
__u64
resolve_flags_from
,
int
dfd_to
,
const
char
*
path_to
,
__u64
o_flags_to
,
__u64
resolve_flags_to
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
)
{
__do_close
int
fd_from
=
-
EBADF
,
fd_to
=
-
EBADF
;
struct
lxc_open_how
how
=
{};
int
ret
;
char
src_buf
[
LXC_PROC_PID_FD_LEN
],
dst_buf
[
LXC_PROC_PID_FD_LEN
];
if
(
is_empty_string
(
path_from
))
{
ret
=
snprintf
(
src_buf
,
sizeof
(
src_buf
),
"/proc/self/fd/%d"
,
dfd_from
);
}
else
{
how
.
flags
=
o_flags_from
;
how
.
resolve
=
resolve_flags_from
;
fd_from
=
openat2
(
dfd_from
,
path_from
,
&
how
,
sizeof
(
how
));
if
(
fd_from
<
0
)
return
-
errno
;
ret
=
snprintf
(
src_buf
,
sizeof
(
src_buf
),
"/proc/self/fd/%d"
,
fd_from
);
}
if
(
ret
<
0
||
ret
>=
sizeof
(
src_buf
))
return
-
EIO
;
if
(
is_empty_string
(
path_to
))
{
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
dfd_to
);
}
else
{
how
.
flags
=
o_flags_to
;
how
.
resolve
=
resolve_flags_to
;
fd_to
=
openat2
(
dfd_to
,
path_to
,
&
how
,
sizeof
(
how
));
if
(
fd_to
<
0
)
return
-
errno
;
ret
=
snprintf
(
dst_buf
,
sizeof
(
dst_buf
),
"/proc/self/fd/%d"
,
fd_to
);
}
if
(
ret
<
0
||
ret
>=
sizeof
(
src_buf
))
return
-
EIO
;
if
(
is_empty_string
(
src_buf
))
ret
=
mount
(
NULL
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
else
ret
=
mount
(
src_buf
,
dst_buf
,
fstype
,
mnt_flags
,
data
);
return
ret
;
}
int
open_devnull
(
void
)
int
open_devnull
(
void
)
{
{
int
fd
=
open
(
"/dev/null"
,
O_RDWR
);
int
fd
=
open
(
"/dev/null"
,
O_RDWR
);
...
...
src/lxc/utils.h
View file @
74ed30d7
...
@@ -244,15 +244,5 @@ __hidden extern int safe_mount_beneath(const char *beneath, const char *src, con
...
@@ -244,15 +244,5 @@ __hidden extern int safe_mount_beneath(const char *beneath, const char *src, con
const
char
*
fstype
,
unsigned
int
flags
,
const
void
*
data
);
const
char
*
fstype
,
unsigned
int
flags
,
const
void
*
data
);
__hidden
extern
int
safe_mount_beneath_at
(
int
beneat_fd
,
const
char
*
src
,
const
char
*
dst
,
__hidden
extern
int
safe_mount_beneath_at
(
int
beneat_fd
,
const
char
*
src
,
const
char
*
dst
,
const
char
*
fstype
,
unsigned
int
flags
,
const
void
*
data
);
const
char
*
fstype
,
unsigned
int
flags
,
const
void
*
data
);
__hidden
extern
int
mount_at
(
int
dfd
,
const
char
*
src_under_dfd
,
const
char
*
dst_under_dfd
,
__u64
o_flags
,
__u64
resolve_flags
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
);
__hidden
extern
int
mount_from_at
(
int
dfd_from
,
const
char
*
path_from
,
__u64
o_flags_from
,
__u64
resolve_flags_from
,
int
dfd_to
,
const
char
*
path_to
,
__u64
o_flags_to
,
__u64
resolve_flags_to
,
const
char
*
fstype
,
unsigned
int
mnt_flags
,
const
void
*
data
);
#endif
/* __LXC_UTILS_H */
#endif
/* __LXC_UTILS_H */
src/tests/Makefile.am
View file @
74ed30d7
...
@@ -39,6 +39,7 @@ lxc_test_api_reboot_SOURCES = api_reboot.c \
...
@@ -39,6 +39,7 @@ lxc_test_api_reboot_SOURCES = api_reboot.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -88,6 +89,7 @@ lxc_test_apparmor_SOURCES = aa.c \
...
@@ -88,6 +89,7 @@ lxc_test_apparmor_SOURCES = aa.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -137,6 +139,7 @@ lxc_test_attach_SOURCES = attach.c \
...
@@ -137,6 +139,7 @@ lxc_test_attach_SOURCES = attach.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -187,6 +190,7 @@ lxc_test_cgpath_SOURCES = cgpath.c \
...
@@ -187,6 +190,7 @@ lxc_test_cgpath_SOURCES = cgpath.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -239,6 +243,7 @@ lxc_test_config_jump_table_SOURCES = config_jump_table.c \
...
@@ -239,6 +243,7 @@ lxc_test_config_jump_table_SOURCES = config_jump_table.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -295,6 +300,7 @@ lxc_test_device_add_remove_SOURCES = device_add_remove.c \
...
@@ -295,6 +300,7 @@ lxc_test_device_add_remove_SOURCES = device_add_remove.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -344,6 +350,7 @@ lxc_test_get_item_SOURCES = get_item.c \
...
@@ -344,6 +350,7 @@ lxc_test_get_item_SOURCES = get_item.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -393,6 +400,7 @@ lxc_test_locktests_SOURCES = locktests.c \
...
@@ -393,6 +400,7 @@ lxc_test_locktests_SOURCES = locktests.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -445,6 +453,7 @@ lxc_test_mount_injection_SOURCES = mount_injection.c \
...
@@ -445,6 +453,7 @@ lxc_test_mount_injection_SOURCES = mount_injection.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -495,6 +504,7 @@ lxc_test_parse_config_file_SOURCES = parse_config_file.c \
...
@@ -495,6 +504,7 @@ lxc_test_parse_config_file_SOURCES = parse_config_file.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -545,6 +555,7 @@ lxc_test_raw_clone_SOURCES = lxc_raw_clone.c \
...
@@ -545,6 +555,7 @@ lxc_test_raw_clone_SOURCES = lxc_raw_clone.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
@@ -609,6 +620,7 @@ lxc_test_utils_SOURCES = lxc-test-utils.c \
...
@@ -609,6 +620,7 @@ lxc_test_utils_SOURCES = lxc-test-utils.c \
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/lxclock.c ../lxc/lxclock.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/mainloop.c ../lxc/mainloop.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/monitor.c ../lxc/monitor.h
\
../lxc/mount_utils.c ../lxc/mount_utils.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/namespace.c ../lxc/namespace.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/network.c ../lxc/network.h
\
../lxc/nl.c ../lxc/nl.h
\
../lxc/nl.c ../lxc/nl.h
\
...
...
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