static const char *
swap_on_off_geli( const char *name, char *mntops, int doingall ) {
struct stat sb;
char *dname, *args;
int error;
error = stat( name, &sb );
if ( which_prog == SWAPON ) do {
if ( error == 0 ) break;
args = swap_on_geli_args( mntops );
if ( args == NULL ) return ( NULL );
dname = swap_basename( name );
if ( dname == NULL ) {
free( args );
return ( NULL );
}
error = run_cmd( NULL, "%s onetime%s %s", _PATH_GELI, args, dname );
free( dname );
free( args );
if ( error ) {
if ( qflag == 0 ) warnx( "%s: Invalid parameters", name );
return ( NULL );
}
} while ( 0 );
return ( swap_on_off_sfile( name, doingall ) );
}
static const char *
swap_on_off(const char *name, int doingall, char *mntops)
{
char base[PATH_MAX];
/* Swap on vnode-backed md(4) device. */
if (mntops != NULL &&
(fnmatch(_PATH_DEV MD_NAME "[0-9]*", name, 0) == 0 ||
fnmatch(MD_NAME "[0-9]*", name, 0) == 0 ||
strncmp(_PATH_DEV MD_NAME, name,
sizeof(_PATH_DEV) + sizeof(MD_NAME)) == 0 ||
strncmp(MD_NAME, name, sizeof(MD_NAME)) == 0))
return (swap_on_off_md(name, mntops, doingall));
basename_r(name, base);
/* Swap on encrypted device by GEOM_BDE. */
if (fnmatch("*.bde", base, 0) == 0)
return (swap_on_off_gbde(name, doingall));
/* Swap on encrypted device by GEOM_ELI. */
if (fnmatch("*.eli", base, 0) == 0)
return (swap_on_off_geli(name, mntops, doingall));
/* Swap on special file. */
return (swap_on_off_sfile(name, doingall));
}
static const char *
swap_on_off_gbde(const char *name, int doingall)
{
const char *ret;
char pass[64 * 2 + 1];
unsigned char bpass[64];
char *dname;
int i, error;
dname = swap_basename(name);
if (dname == NULL)
return (NULL);
if (which_prog == SWAPON) {
arc4random_buf(bpass, sizeof(bpass));
for (i = 0; i < (int)sizeof(bpass); i++)
sprintf(&pass[2 * i], "%02x", bpass[i]);
pass[sizeof(pass) - 1] = '\0';
error = run_cmd(NULL, "%s init %s -P %s", _PATH_GBDE,
dname, pass);
if (error) {
/* bde device found. Ignore it. */
free(dname);
if (qflag == 0)
warnx("%s: Device already in use", name);
return (NULL);
}
error = run_cmd(NULL, "%s attach %s -p %s", _PATH_GBDE,
dname, pass);
free(dname);
if (error) {
warnx("gbde (attach) error: %s", name);
return (NULL);
}
}
ret = swap_on_off_sfile(name, doingall);
if (which_prog == SWAPOFF) {
error = run_cmd(NULL, "%s detach %s", _PATH_GBDE, dname);
free(dname);
if (error) {
/* bde device not found. Ignore it. */
if (qflag == 0)
warnx("%s: Device not found", name);
return (NULL);
}
}
return (ret);
}
static const char *
swap_on_off( const char *name, int doingall, char *mntops ) {
char base[PATH_MAX];
if ( mntops != NULL &&
(fnmatch(_PATH_DEV MD_NAME "[0-9]*", name, 0) == 0 ||
fnmatch(MD_NAME "[0-9]*", name, 0) == 0 ||
strncmp(_PATH_DEV MD_NAME, name,
sizeof(_PATH_DEV) + sizeof(MD_NAME)) == 0 ||
strncmp(MD_NAME, name, sizeof(MD_NAME)) == 0) ) return ( swap_on_off_md( name, mntops, doingall ) );
basename_r( name, base );
if ( fnmatch( "*.bde", base, 0 ) == 0 ) return ( swap_on_off_gbde( name, doingall ) );
if ( fnmatch( "*.eli", base, 0 ) == 0 ) return ( swap_on_off_geli( name, mntops, doingall ) );
return ( swap_on_off_sfile( name, doingall ) );
}
static const char *
swap_on_off_md( const char *name, char *mntops, int doingall ) {
FILE *sfd;
int fd, mdunit, error;
const char *ret;
static char mdpath[PATH_MAX], linebuf[PATH_MAX];
char *p, *vnodefile;
size_t linelen;
u_long ul;
fd = -1;
sfd = NULL;
if ( strlen( name ) == ( sizeof(MD_NAME) - 1 ) ) mdunit = -1;
else {
errno = 0;
ul = strtoul( name + 2, &p, 10 );
if ( errno == 0 ) {
if ( *p != '\0' || ul > INT_MAX ) errno = EINVAL;
}
if ( errno ) {
warn( "Bad device unit: %s", name );
return ( NULL );
}
mdunit = (int) ul;
}
vnodefile = NULL;
if ( ( p = strstr( mntops, "file=" ) ) != NULL ) {
vnodefile = strdup( p + sizeof( "file=" ) - 1 );
p = strchr( vnodefile, ',' );
if ( p != NULL ) *p = '\0';
}
if ( vnodefile == NULL ) {
warnx( "file option not found for %s", name );
return ( NULL );
}
if ( which_prog == SWAPON ) {
if ( mdunit == -1 ) {
error = run_cmd( &fd, "%s -l -n -f %s", _PATH_MDCONFIG, vnodefile );
if ( error == 0 ) {
close( fd );
if ( !qflag ) warnx( "%s: Device already in use", vnodefile );
free( vnodefile );
return ( NULL );
}
error = run_cmd( &fd, "%s -a -t vnode -n -f %s", _PATH_MDCONFIG, vnodefile );
if ( error ) {
warnx( "mdconfig (attach) error: file=%s", vnodefile );
free( vnodefile );
return ( NULL );
}
sfd = fdopen( fd, "r" );
if ( sfd == NULL ) {
warn( "mdconfig (attach) fdopen error" );
ret = NULL;
goto err;
}
p = fgetln( sfd, &linelen );
if ( p == NULL && ( linelen < 2 || linelen > sizeof( linebuf ) ) ) {
warn( "mdconfig (attach) unexpected output" );
ret = NULL;
goto err;
}
strncpy( linebuf, p, linelen );
linebuf[linelen - 1] = '\0';
errno = 0;
ul = strtoul( linebuf, &p, 10 );
if ( errno == 0 ) {
if ( *p != '\0' || ul > INT_MAX ) errno = EINVAL;
}
if ( errno ) {
warn( "mdconfig (attach) unexpected output: %s", linebuf );
ret = NULL;
goto err;
}
mdunit = (int) ul;
} else {
error = run_cmd( &fd, "%s -l -n -f %s -u %d", _PATH_MDCONFIG, vnodefile, mdunit );
if ( error == 0 ) {
close( fd );
if ( qflag == 0 ) warnx( "md%d on %s: Device already "
"in use", mdunit, vnodefile );
free( vnodefile );
return ( NULL );
}
error = run_cmd( NULL, "%s -a -t vnode -u %d -f %s", _PATH_MDCONFIG, mdunit, vnodefile );
if ( error ) {
warnx( "mdconfig (attach) error: "
"md%d on file=%s", mdunit, vnodefile );
free( vnodefile );
return ( NULL );
}
}
} else {
if ( mdunit == -1 ) {
error = run_cmd( &fd, "%s -l -n -f %s", _PATH_MDCONFIG, vnodefile );
if ( error ) {
close( fd );
if ( !qflag ) warnx( "md on %s: Device not found", vnodefile );
free( vnodefile );
return ( NULL );
}
sfd = fdopen( fd, "r" );
if ( sfd == NULL ) {
warn( "mdconfig (list) fdopen error" );
ret = NULL;
goto err;
}
p = fgetln( sfd, &linelen );
if ( p == NULL && ( linelen < 2 || linelen > sizeof( linebuf ) - 1 ) ) {
warn( "mdconfig (list) unexpected output" );
ret = NULL;
goto err;
}
strncpy( linebuf, p, linelen );
linebuf[linelen - 1] = '\0';
p = strchr( linebuf, ' ' );
if ( p != NULL ) *p = '\0';
errno = 0;
ul = strtoul( linebuf, &p, 10 );
if ( errno == 0 ) {
if ( *p != '\0' || ul > INT_MAX ) errno = EINVAL;
}
if ( errno ) {
warn( "mdconfig (list) unexpected output: %s", linebuf );
ret = NULL;
goto err;
}
mdunit = (int) ul;
} else {
error = run_cmd( &fd, "%s -l -n -f %s -u %d", _PATH_MDCONFIG, vnodefile, mdunit );
if ( error ) {
close( fd );
if ( !qflag ) warnx( "md%d on %s: Device not found", mdunit, vnodefile );
free( vnodefile );
return ( NULL );
}
}
}
snprintf( mdpath, sizeof( mdpath ), "%s%s%d", _PATH_DEV, MD_NAME, mdunit );
mdpath[sizeof( mdpath ) - 1] = '\0';
ret = swap_on_off_sfile( mdpath, doingall );
if ( which_prog == SWAPOFF ) {
if ( ret != NULL ) {
error = run_cmd( NULL, "%s -d -u %d", _PATH_MDCONFIG, mdunit );
if ( error ) warn( "mdconfig (detach) detach failed: %s%s%d", _PATH_DEV, MD_NAME, mdunit );
}
}
err: if ( sfd != NULL ) fclose( sfd );
if ( fd != -1 ) close( fd );
free( vnodefile );
return ( ret );
}
