return nulstr_contains(table, fstype);
}
+bool fstype_is_deviceless(const char *fstype) {
+ static const char table[] =
+ "autofs\0"
+ "bdev\0"
+ "cgroup\0"
+ "configfs\0"
+ "cpuset\0"
+ "debugfs\0"
+ "devpts\0"
+ "devtmpfs\0"
+ "efivarfs\0"
+ "hugetlbfs\0"
+ "mqueue\0"
+ "overlayfs\0"
+ "pipefs\0"
+ "proc\0"
+ "pstore\0"
+ "ramfs\0"
+ "rootfs\0"
+ "rpc_pipefs\0"
+ "securityfs\0"
+ "sockfs\0"
+ "sysfs\0"
+ "tmpfs\0";
+
+ return !isempty(fstype) && (
+ nulstr_contains(table, fstype) || fstype_is_network(fstype));
+}
+
int chvt(int vt) {
_cleanup_close_ int fd;
/* This is an ugly hack */
if (major(devnr) == 136) {
- asprintf(&b, "pts/%u", minor(devnr));
- goto finish;
- }
+ if (asprintf(&b, "pts/%u", minor(devnr)) < 0)
+ return -ENOMEM;
+ } else {
+ /* Probably something like the ptys which have no
+ * symlink in /dev/char. Let's return something
+ * vaguely useful. */
- /* Probably something like the ptys which have no
- * symlink in /dev/char. Let's return something
- * vaguely useful. */
+ b = strdup(fn + 5);
+ if (!b)
+ return -ENOMEM;
+ }
+ } else {
+ if (startswith(s, "/dev/"))
+ p = s + 5;
+ else if (startswith(s, "../"))
+ p = s + 3;
+ else
+ p = s;
- b = strdup(fn + 5);
- goto finish;
+ b = strdup(p);
+ if (!b)
+ return -ENOMEM;
}
- if (startswith(s, "/dev/"))
- p = s + 5;
- else if (startswith(s, "../"))
- p = s + 3;
- else
- p = s;
-
- b = strdup(p);
-
-finish:
- if (!b)
- return -ENOMEM;
-
*r = b;
if (_devnr)
*_devnr = devnr;
return chattr_fd(fd, b, mask);
}
+int change_attr_fd(int fd, unsigned value, unsigned mask) {
+ unsigned old_attr, new_attr;
+
+ assert(fd >= 0);
+
+ if (mask == 0)
+ return 0;
+
+ if (ioctl(fd, FS_IOC_GETFLAGS, &old_attr) < 0)
+ return -errno;
+
+ new_attr = (old_attr & ~mask) |(value & mask);
+
+ if (new_attr == old_attr)
+ return 0;
+
+ if (ioctl(fd, FS_IOC_SETFLAGS, &new_attr) < 0)
+ return -errno;
+
+ return 0;
+}
+
int read_attr_fd(int fd, unsigned *ret) {
assert(fd >= 0);