fa6fe07d15
The lookup_one_len family of functions is (now) only used internally by a filesystem on itself either - in a context where permission checking is irrelevant such as by a virtual filesystem populating itself, or xfs accessing its ORPHANAGE or dquota accessing the quota file; or - in a context where a permission check (MAY_EXEC on the parent) has just been performed such as a network filesystem finding in "silly-rename" file in the same directory. This is also the context after the _parentat() functions where currently lookup_one_qstr_excl() is used. So the permission check is pointless. The name "one_len" is unhelpful in understanding the purpose of these functions and should be changed. Most of the callers pass the len as "strlen()" so using a qstr and QSTR() can simplify the code. This patch renames these functions (include lookup_positive_unlocked() which is part of the family despite the name) to have a name based on "lookup_noperm". They are changed to receive a 'struct qstr' instead of separate name and len. In a few cases the use of QSTR() results in a new call to strlen(). try_lookup_noperm() takes a pointer to a qstr instead of the whole qstr. This is consistent with d_hash_and_lookup() (which is nearly identical) and useful for lookup_noperm_unlocked(). The new lookup_noperm_common() doesn't take a qstr yet. That will be tidied up in a subsequent patch. Signed-off-by: NeilBrown <neil@brown.name> Link: https://lore.kernel.org/r/20250319031545.2999807-5-neil@brown.name Signed-off-by: Christian Brauner <brauner@kernel.org> |
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| .. | ||
| include | ||
| .gitignore | ||
| Kconfig | ||
| Makefile | ||
| apparmorfs.c | ||
| audit.c | ||
| capability.c | ||
| crypto.c | ||
| domain.c | ||
| file.c | ||
| ipc.c | ||
| label.c | ||
| lib.c | ||
| lsm.c | ||
| match.c | ||
| mount.c | ||
| net.c | ||
| nulldfa.in | ||
| path.c | ||
| policy.c | ||
| policy_compat.c | ||
| policy_ns.c | ||
| policy_unpack.c | ||
| policy_unpack_test.c | ||
| procattr.c | ||
| resource.c | ||
| secid.c | ||
| stacksplitdfa.in | ||
| task.c | ||