/* Nautilus loves to use access(2) to test everything about a file,
* such as whether it's executable. Therefore treat this a lot like
* mount_local_getattr.
*/
static int
mount_local_access (const char *path, int mask)
{
struct stat statbuf;
int r;
struct fuse_context *fuse;
int ok = 1;
DECL_G ();
DEBUG_CALL ("%s, %d", path, mask);
if (g->ml_read_only && (mask & W_OK))
return -EROFS;
r = mount_local_getattr (path, &statbuf);
if (r < 0 || mask == F_OK) {
debug (g, "%s: mount_local_getattr returned r = %d", path, r);
return r;
}
fuse = fuse_get_context ();
/* Root user should be able to access everything, so only bother
* with these fine-grained tests for non-root. (RHBZ#1106548).
*/
if (fuse->uid != 0) {
if (mask & R_OK)
ok = ok &&
( fuse->uid == statbuf.st_uid ? statbuf.st_mode & S_IRUSR
: fuse->gid == statbuf.st_gid ? statbuf.st_mode & S_IRGRP
: statbuf.st_mode & S_IROTH);
if (mask & W_OK)
ok = ok &&
( fuse->uid == statbuf.st_uid ? statbuf.st_mode & S_IWUSR
: fuse->gid == statbuf.st_gid ? statbuf.st_mode & S_IWGRP
: statbuf.st_mode & S_IWOTH);
if (mask & X_OK)
ok = ok &&
( fuse->uid == statbuf.st_uid ? statbuf.st_mode & S_IXUSR
: fuse->gid == statbuf.st_gid ? statbuf.st_mode & S_IXGRP
: statbuf.st_mode & S_IXOTH);
}
debug (g, "%s: "
"testing access mask%s%s%s%s: "
"caller UID:GID = %ju:%ju, "
"file UID:GID = %ju:%ju, "
"file mode = %o, "
"result = %s",
path,
mask & R_OK ? " R_OK" : "",
mask & W_OK ? " W_OK" : "",
mask & X_OK ? " X_OK" : "",
mask == 0 ? " 0" : "",
(uintmax_t) fuse->uid, (uintmax_t) fuse->gid,
(uintmax_t) statbuf.st_uid, (uintmax_t) statbuf.st_gid,
statbuf.st_mode,
ok ? "OK" : "EACCESS");
return ok ? 0 : -EACCES;
}
/* Nautilus loves to use access(2) to test everything about a file,
* such as whether it's executable. Therefore treat this a lot like
* mount_local_getattr.
*/
static int
mount_local_access (const char *path, int mask)
{
DECL_G ();
DEBUG_CALL ("%s, %d", path, mask);
struct stat statbuf;
int r;
if (g->ml_read_only && (mask & W_OK))
return -EROFS;
r = mount_local_getattr (path, &statbuf);
if (r < 0 || mask == F_OK)
return r;
struct fuse_context *fuse = fuse_get_context ();
int ok = 1;
if (mask & R_OK)
ok = ok &&
( fuse->uid == statbuf.st_uid ? statbuf.st_mode & S_IRUSR
: fuse->gid == statbuf.st_gid ? statbuf.st_mode & S_IRGRP
: statbuf.st_mode & S_IROTH);
if (mask & W_OK)
ok = ok &&
( fuse->uid == statbuf.st_uid ? statbuf.st_mode & S_IWUSR
: fuse->gid == statbuf.st_gid ? statbuf.st_mode & S_IWGRP
: statbuf.st_mode & S_IWOTH);
if (mask & X_OK)
ok = ok &&
( fuse->uid == statbuf.st_uid ? statbuf.st_mode & S_IXUSR
: fuse->gid == statbuf.st_gid ? statbuf.st_mode & S_IXGRP
: statbuf.st_mode & S_IXOTH);
return ok ? 0 : -EACCES;
}
