mirror/xemu
3
0
Fork 0
mirror of https://github.com/mborgerson/xemu.git synced 2025-12-01 16:10:01 +00:00
Code Issues Projects Releases Wiki Activity

virtiofsd: Add an option to enable/disable security label

Browse Source 
Provide an option "-o security_label/no_security_label" to enable/disable
security label functionality. By default these are turned off.

If enabled, server will indicate to client that it is capable of handling
one security label during file creation. Typically this is expected to
be a SELinux label. File server will set this label on the file. It will
try to set it atomically wherever possible. But its not possible in
all the cases.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Message-Id: <20220208204813.682906-11-vgoyal@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Vivek Goyal
2022-02-08 15:48:13 -05:00
committed by Dr. David Alan Gilbert
parent a675c9a600
commit 963061dc11
3 changed files with 48 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
tools/virtiofsd/helper.c
View File

@ -187,6 +187,7 @@ void fuse_cmdline_help(void)
" default: no_allow_direct_io\n"
" -o announce_submounts Announce sub-mount points to the guest\n"
" -o posix_acl/no_posix_acl Enable/Disable posix_acl. (default: disabled)\n"
" -o security_label/no_security_label Enable/Disable security label. (default: disabled)\n"
);
}

15
tools/virtiofsd/passthrough_ll.c
View File

@ -181,6 +181,7 @@ struct lo_data {
int user_posix_acl, posix_acl;
/* Keeps track if /proc/<pid>/attr/fscreate should be used or not */
bool use_fscreate;
int user_security_label;
};
static const struct fuse_opt lo_opts[] = {
@ -215,6 +216,8 @@ static const struct fuse_opt lo_opts[] = {
{ "no_killpriv_v2", offsetof(struct lo_data, user_killpriv_v2), 0 },
{ "posix_acl", offsetof(struct lo_data, user_posix_acl), 1 },
{ "no_posix_acl", offsetof(struct lo_data, user_posix_acl), 0 },
{ "security_label", offsetof(struct lo_data, user_security_label), 1 },
{ "no_security_label", offsetof(struct lo_data, user_security_label), 0 },
FUSE_OPT_END
};
static bool use_syslog = false;
@ -808,6 +811,17 @@ static void lo_init(void *userdata, struct fuse_conn_info *conn)
fuse_log(FUSE_LOG_DEBUG, "lo_init: disabling posix_acl\n");
conn->want &= ~FUSE_CAP_POSIX_ACL;
}
if (lo->user_security_label == 1) {
if (!(conn->capable & FUSE_CAP_SECURITY_CTX)) {
fuse_log(FUSE_LOG_ERR, "lo_init: Can not enable security label."
" kernel does not support FUSE_SECURITY_CTX capability.\n");
}
conn->want |= FUSE_CAP_SECURITY_CTX;
} else {
fuse_log(FUSE_LOG_DEBUG, "lo_init: disabling security label\n");
conn->want &= ~FUSE_CAP_SECURITY_CTX;
}
}
static void lo_getattr(fuse_req_t req, fuse_ino_t ino,
@ -4288,6 +4302,7 @@ int main(int argc, char *argv[])
.proc_self_task = -1,
.user_killpriv_v2 = -1,
.user_posix_acl = -1,
.user_security_label = -1,
};
struct lo_map_elem *root_elem;
struct lo_map_elem *reserve_elem;