int echo_keys = 0;
const char *libvirt_uri;
int dir_cache_timeout = 60;
+static int trace_calls = 0;
+
+#define TRACE_CALL(fs,...) \
+ if (trace_calls) { \
+ fprintf (stderr, "%s: %s (" fs ")\n", \
+ program_name, __func__, __VA_ARGS__); \
+ }
static int
error (void)
fg_readdir (const char *path, void *buf, fuse_fill_dir_t filler,
off_t offset, struct fuse_file_info *fi)
{
+ TRACE_CALL ("%s, %p, %ld", path, buf, (long) offset);
+
time_t now;
time (&now);
static int
fg_getattr (const char *path, struct stat *statbuf)
{
+ TRACE_CALL ("%s, %p", path, statbuf);
+
const struct stat *buf;
buf = lsc_lookup (path);
static int
fg_access (const char *path, int mask)
{
+ TRACE_CALL ("%s, %d", path, mask);
+
struct stat statbuf;
int r;
static int
fg_readlink (const char *path, char *buf, size_t size)
{
+ TRACE_CALL ("%s, %p, %zu", path, buf, size);
+
const char *r;
int free_it = 0;
static int
fg_mknod (const char *path, mode_t mode, dev_t rdev)
{
+ TRACE_CALL ("%s, 0%o, 0x%lx", path, mode, (long) rdev);
+
int r;
if (read_only) return -EROFS;
static int
fg_mkdir (const char *path, mode_t mode)
{
+ TRACE_CALL ("%s, 0%o", path, mode);
+
int r;
if (read_only) return -EROFS;
static int
fg_unlink (const char *path)
{
+ TRACE_CALL ("%s", path);
+
int r;
if (read_only) return -EROFS;
static int
fg_rmdir (const char *path)
{
+ TRACE_CALL ("%s", path);
+
int r;
if (read_only) return -EROFS;
static int
fg_symlink (const char *from, const char *to)
{
+ TRACE_CALL ("%s, %s", from, to);
+
int r;
if (read_only) return -EROFS;
static int
fg_rename (const char *from, const char *to)
{
+ TRACE_CALL ("%s, %s", from, to);
+
int r;
if (read_only) return -EROFS;
static int
fg_link (const char *from, const char *to)
{
+ TRACE_CALL ("%s, %s", from, to);
+
int r;
if (read_only) return -EROFS;
static int
fg_chmod (const char *path, mode_t mode)
{
+ TRACE_CALL ("%s, 0%o", path, mode);
+
int r;
if (read_only) return -EROFS;
static int
fg_chown (const char *path, uid_t uid, gid_t gid)
{
+ TRACE_CALL ("%s, %ld, %ld", path, (long) uid, (long) gid);
+
int r;
if (read_only) return -EROFS;
static int
fg_truncate (const char *path, off_t size)
{
+ TRACE_CALL ("%s, %ld", path, (long) size);
+
int r;
if (read_only) return -EROFS;
static int
fg_utimens (const char *path, const struct timespec ts[2])
{
+ TRACE_CALL ("%s, [{ %ld, %ld }, { %ld, %ld }]",
+ path, ts[0].tv_sec, ts[0].tv_nsec, ts[1].tv_sec, ts[1].tv_nsec);
+
int r;
if (read_only) return -EROFS;
return 0;
}
-/* This call is quite hard to emulate through the guestfs(3) API. In
- * one sense it's a little like access (see above) because it tests
- * whether opening a file would succeed given the flags. But it also
- * has side effects such as truncating the file if O_TRUNC is given.
- * Therefore we need to emulate it ... painfully.
+/* All this function needs to do is to check that the requested open
+ * flags are valid. See the notes in <fuse/fuse.h>.
*/
static int
fg_open (const char *path, struct fuse_file_info *fi)
{
- int r, exists;
-
- if (fi->flags & O_WRONLY) {
- if (read_only)
- return -EROFS;
- }
-
- exists = guestfs_exists (g, path);
- if (exists == -1)
- return error ();
-
- if (fi->flags & O_CREAT) {
- if (read_only)
- return -EROFS;
-
- dir_cache_invalidate (path);
-
- /* Exclusive? File must not exist already. */
- if (fi->flags & O_EXCL) {
- if (exists)
- return -EEXIST;
- }
+ TRACE_CALL ("%s, 0%o", path, fi->flags);
+
+ int flags = fi->flags & 3;
- /* Create? Touch it and optionally truncate it. */
- r = guestfs_touch (g, path);
- if (r == -1)
- return error ();
-
- if (fi->flags & O_TRUNC) {
- r = guestfs_truncate (g, path);
- if (r == -1)
- return error ();
- }
- } else {
- /* Not create, just check it exists. */
- if (!exists)
- return -ENOENT;
- }
+ if (read_only && flags != O_RDONLY)
+ return -EROFS;
return 0;
}
fg_read (const char *path, char *buf, size_t size, off_t offset,
struct fuse_file_info *fi)
{
+ TRACE_CALL ("%s, %p, %zu, %ld", path, buf, size, offset);
+
char *r;
size_t rsize;
fg_write (const char *path, const char *buf, size_t size,
off_t offset, struct fuse_file_info *fi)
{
+ TRACE_CALL ("%s, %p, %zu, %ld", path, buf, size, offset);
+
if (read_only) return -EROFS;
dir_cache_invalidate (path);
static int
fg_statfs (const char *path, struct statvfs *stbuf)
{
+ TRACE_CALL ("%s, %p", path, stbuf);
+
struct guestfs_statvfs *r;
r = guestfs_statvfs (g, path);
static int
fg_release (const char *path, struct fuse_file_info *fi)
{
+ TRACE_CALL ("%s", path);
+
/* Just a stub. This method is optional and can safely be left
* unimplemented.
*/
static int fg_fsync(const char *path, int isdatasync,
struct fuse_file_info *fi)
{
+ TRACE_CALL ("%s, %d", path, isdatasync);
+
int r;
r = guestfs_sync (g);
fg_setxattr (const char *path, const char *name, const char *value,
size_t size, int flags)
{
+ TRACE_CALL ("%s, %s, %p, %zu", path, name, value, size);
+
int r;
if (read_only) return -EROFS;
fg_getxattr (const char *path, const char *name, char *value,
size_t size)
{
+ TRACE_CALL ("%s, %s, %p, %zu", path, name, value, size);
+
const struct guestfs_xattr_list *xattrs;
int free_attrs = 0;
static int
fg_listxattr (const char *path, char *list, size_t size)
{
+ TRACE_CALL ("%s, %p, %zu", path, list, size);
+
const struct guestfs_xattr_list *xattrs;
int free_attrs = 0;
static int
fg_removexattr(const char *path, const char *name)
{
+ TRACE_CALL ("%s, %s", path, name);
+
int r;
if (read_only) return -EROFS;
/* The command line arguments are broadly compatible with (a subset
* of) guestfish. Thus we have to deal mainly with -a, -m and --ro.
*/
- static const char *options = "a:c:d:im:no:rv?Vx";
+ static const char *options = "a:c:d:im:no:rv?Vwx";
static const struct option long_options[] = {
{ "add", 1, 0, 'a' },
{ "connect", 1, 0, 'c' },
{ "no-sync", 0, 0, 'n' },
{ "option", 1, 0, 'o' },
{ "ro", 0, 0, 'r' },
+ { "rw", 0, 0, 'w' },
{ "selinux", 0, 0, 0 },
{ "trace", 0, 0, 'x' },
{ "verbose", 0, 0, 'v' },
OPTION_V;
break;
+ case 'w':
+ OPTION_w;
+ break;
+
case 'x':
OPTION_x;
ADD_FUSE_ARG ("-f");
guestfs_set_recovery_proc (g, 1);
+ trace_calls = 1;
break;
case HELP_OPTION:
git.annexia.org / libguestfs.git / blobdiff