| Message ID | 20220829170401.834298-5-konstantin.meskhidze@huawei.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Network support for Landlock | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Not a local patch, async |
You can make the subject more informative with "landlock: Move unmask_layers() and init_layer_masks()". On 29/08/2022 19:03, Konstantin Meskhidze wrote: > This patch moves unmask_layers() and init_layer_masks() helpers > to ruleset.c to share with landlock network implementation in > following commits. > > Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com> > --- > > Changes since v6: > * Moves get_handled_accesses() helper from ruleset.c back to fs.c, > cause it's not used in coming network commits. > > Changes since v5: > * Splits commit. > * Moves init_layer_masks() and get_handled_accesses() helpers > to ruleset.c and makes then non-static. > * Formats code with clang-format-14. > > --- > security/landlock/fs.c | 85 ------------------------------------- > security/landlock/ruleset.c | 84 ++++++++++++++++++++++++++++++++++++ > security/landlock/ruleset.h | 10 +++++ > 3 files changed, 94 insertions(+), 85 deletions(-) > > diff --git a/security/landlock/fs.c b/security/landlock/fs.c > index cca87fcd222d..b03d6153f628 100644 > --- a/security/landlock/fs.c > +++ b/security/landlock/fs.c > @@ -215,60 +215,6 @@ find_rule(const struct landlock_ruleset *const domain, > return rule; > } > > -/* > - * @layer_masks is read and may be updated according to the access request and > - * the matching rule. > - * > - * Returns true if the request is allowed (i.e. relevant layer masks for the > - * request are empty). > - */ > -static inline bool > -unmask_layers(const struct landlock_rule *const rule, > - const access_mask_t access_request, > - layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) > -{ > - size_t layer_level; > - > - if (!access_request || !layer_masks) > - return true; > - if (!rule) > - return false; > - > - /* > - * An access is granted if, for each policy layer, at least one rule > - * encountered on the pathwalk grants the requested access, > - * regardless of its position in the layer stack. We must then check > - * the remaining layers for each inode, from the first added layer to > - * the last one. When there is multiple requested accesses, for each > - * policy layer, the full set of requested accesses may not be granted > - * by only one rule, but by the union (binary OR) of multiple rules. > - * E.g. /a/b <execute> + /a <read> => /a/b <execute + read> > - */ > - for (layer_level = 0; layer_level < rule->num_layers; layer_level++) { > - const struct landlock_layer *const layer = > - &rule->layers[layer_level]; > - const layer_mask_t layer_bit = BIT_ULL(layer->level - 1); > - const unsigned long access_req = access_request; > - unsigned long access_bit; > - bool is_empty; > - > - /* > - * Records in @layer_masks which layer grants access to each > - * requested access. > - */ > - is_empty = true; > - for_each_set_bit(access_bit, &access_req, > - ARRAY_SIZE(*layer_masks)) { > - if (layer->access & BIT_ULL(access_bit)) > - (*layer_masks)[access_bit] &= ~layer_bit; > - is_empty = is_empty && !(*layer_masks)[access_bit]; > - } > - if (is_empty) > - return true; > - } > - return false; > -} > - > /* > * Allows access to pseudo filesystems that will never be mountable (e.g. > * sockfs, pipefs), but can still be reachable through > @@ -303,37 +249,6 @@ get_handled_accesses(const struct landlock_ruleset *const domain) > return access_dom; > } > > -static inline access_mask_t > -init_layer_masks(const struct landlock_ruleset *const domain, > - const access_mask_t access_request, > - layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) > -{ > - access_mask_t handled_accesses = 0; > - size_t layer_level; > - > - memset(layer_masks, 0, sizeof(*layer_masks)); > - /* An empty access request can happen because of O_WRONLY | O_RDWR. */ > - if (!access_request) > - return 0; > - > - /* Saves all handled accesses per layer. */ > - for (layer_level = 0; layer_level < domain->num_layers; layer_level++) { > - const unsigned long access_req = access_request; > - unsigned long access_bit; > - > - for_each_set_bit(access_bit, &access_req, > - ARRAY_SIZE(*layer_masks)) { > - if (landlock_get_fs_access_mask(domain, layer_level) & > - BIT_ULL(access_bit)) { > - (*layer_masks)[access_bit] |= > - BIT_ULL(layer_level); > - handled_accesses |= BIT_ULL(access_bit); > - } > - } > - } > - return handled_accesses; > -} > - > /* > * Check that a destination file hierarchy has more restrictions than a source > * file hierarchy. This is only used for link and rename actions. > diff --git a/security/landlock/ruleset.c b/security/landlock/ruleset.c > index 3a5ef356aaa3..671a95e2a345 100644 > --- a/security/landlock/ruleset.c > +++ b/security/landlock/ruleset.c > @@ -564,3 +564,87 @@ landlock_find_rule(const struct landlock_ruleset *const ruleset, > } > return NULL; > } > + > +/* > + * @layer_masks is read and may be updated according to the access request and > + * the matching rule. > + * > + * Returns true if the request is allowed (i.e. relevant layer masks for the > + * request are empty). > + */ > +bool unmask_layers(const struct landlock_rule *const rule, > + const access_mask_t access_request, > + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) > +{ > + size_t layer_level; > + > + if (!access_request || !layer_masks) > + return true; > + if (!rule) > + return false; > + > + /* > + * An access is granted if, for each policy layer, at least one rule > + * encountered on the pathwalk grants the requested access, > + * regardless of its position in the layer stack. We must then check > + * the remaining layers for each inode, from the first added layer to > + * the last one. When there is multiple requested accesses, for each > + * policy layer, the full set of requested accesses may not be granted > + * by only one rule, but by the union (binary OR) of multiple rules. > + * E.g. /a/b <execute> + /a <read> => /a/b <execute + read> > + */ > + for (layer_level = 0; layer_level < rule->num_layers; layer_level++) { > + const struct landlock_layer *const layer = > + &rule->layers[layer_level]; > + const layer_mask_t layer_bit = BIT_ULL(layer->level - 1); > + const unsigned long access_req = access_request; > + unsigned long access_bit; > + bool is_empty; > + > + /* > + * Records in @layer_masks which layer grants access to each > + * requested access. > + */ > + is_empty = true; > + for_each_set_bit(access_bit, &access_req, > + ARRAY_SIZE(*layer_masks)) { > + if (layer->access & BIT_ULL(access_bit)) > + (*layer_masks)[access_bit] &= ~layer_bit; > + is_empty = is_empty && !(*layer_masks)[access_bit]; > + } > + if (is_empty) > + return true; > + } > + return false; > +} > + > +access_mask_t > +init_layer_masks(const struct landlock_ruleset *const domain, > + const access_mask_t access_request, > + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) > +{ > + access_mask_t handled_accesses = 0; > + size_t layer_level; > + > + memset(layer_masks, 0, sizeof(*layer_masks)); > + /* An empty access request can happen because of O_WRONLY | O_RDWR. */ > + if (!access_request) > + return 0; > + > + /* Saves all handled accesses per layer. */ > + for (layer_level = 0; layer_level < domain->num_layers; layer_level++) { > + const unsigned long access_req = access_request; > + unsigned long access_bit; > + > + for_each_set_bit(access_bit, &access_req, > + ARRAY_SIZE(*layer_masks)) { > + if (landlock_get_fs_access_mask(domain, layer_level) & > + BIT_ULL(access_bit)) { > + (*layer_masks)[access_bit] |= > + BIT_ULL(layer_level); > + handled_accesses |= BIT_ULL(access_bit); > + } > + } > + } > + return handled_accesses; > +} > diff --git a/security/landlock/ruleset.h b/security/landlock/ruleset.h > index bb1408cc8dd2..d7d9b987829c 100644 > --- a/security/landlock/ruleset.h > +++ b/security/landlock/ruleset.h > @@ -235,4 +235,14 @@ landlock_get_fs_access_mask(const struct landlock_ruleset *const ruleset, > LANDLOCK_SHIFT_ACCESS_FS) & > LANDLOCK_MASK_ACCESS_FS; > } > + > +bool unmask_layers(const struct landlock_rule *const rule, > + const access_mask_t access_request, > + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]); > + > +access_mask_t > +init_layer_masks(const struct landlock_ruleset *const domain, > + const access_mask_t access_request, > + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]); > + > #endif /* _SECURITY_LANDLOCK_RULESET_H */ > -- > 2.25.1 >
9/6/2022 11:07 AM, Mickaël Salaün пишет: > You can make the subject more informative with "landlock: Move > unmask_layers() and init_layer_masks()". > Ok. Thanks. > > On 29/08/2022 19:03, Konstantin Meskhidze wrote: >> This patch moves unmask_layers() and init_layer_masks() helpers >> to ruleset.c to share with landlock network implementation in >> following commits. >> >> Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com> >> --- >> >> Changes since v6: >> * Moves get_handled_accesses() helper from ruleset.c back to fs.c, >> cause it's not used in coming network commits. >> >> Changes since v5: >> * Splits commit. >> * Moves init_layer_masks() and get_handled_accesses() helpers >> to ruleset.c and makes then non-static. >> * Formats code with clang-format-14. >> >> --- >> security/landlock/fs.c | 85 ------------------------------------- >> security/landlock/ruleset.c | 84 ++++++++++++++++++++++++++++++++++++ >> security/landlock/ruleset.h | 10 +++++ >> 3 files changed, 94 insertions(+), 85 deletions(-) >> >> diff --git a/security/landlock/fs.c b/security/landlock/fs.c >> index cca87fcd222d..b03d6153f628 100644 >> --- a/security/landlock/fs.c >> +++ b/security/landlock/fs.c >> @@ -215,60 +215,6 @@ find_rule(const struct landlock_ruleset *const domain, >> return rule; >> } >> >> -/* >> - * @layer_masks is read and may be updated according to the access request and >> - * the matching rule. >> - * >> - * Returns true if the request is allowed (i.e. relevant layer masks for the >> - * request are empty). >> - */ >> -static inline bool >> -unmask_layers(const struct landlock_rule *const rule, >> - const access_mask_t access_request, >> - layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) >> -{ >> - size_t layer_level; >> - >> - if (!access_request || !layer_masks) >> - return true; >> - if (!rule) >> - return false; >> - >> - /* >> - * An access is granted if, for each policy layer, at least one rule >> - * encountered on the pathwalk grants the requested access, >> - * regardless of its position in the layer stack. We must then check >> - * the remaining layers for each inode, from the first added layer to >> - * the last one. When there is multiple requested accesses, for each >> - * policy layer, the full set of requested accesses may not be granted >> - * by only one rule, but by the union (binary OR) of multiple rules. >> - * E.g. /a/b <execute> + /a <read> => /a/b <execute + read> >> - */ >> - for (layer_level = 0; layer_level < rule->num_layers; layer_level++) { >> - const struct landlock_layer *const layer = >> - &rule->layers[layer_level]; >> - const layer_mask_t layer_bit = BIT_ULL(layer->level - 1); >> - const unsigned long access_req = access_request; >> - unsigned long access_bit; >> - bool is_empty; >> - >> - /* >> - * Records in @layer_masks which layer grants access to each >> - * requested access. >> - */ >> - is_empty = true; >> - for_each_set_bit(access_bit, &access_req, >> - ARRAY_SIZE(*layer_masks)) { >> - if (layer->access & BIT_ULL(access_bit)) >> - (*layer_masks)[access_bit] &= ~layer_bit; >> - is_empty = is_empty && !(*layer_masks)[access_bit]; >> - } >> - if (is_empty) >> - return true; >> - } >> - return false; >> -} >> - >> /* >> * Allows access to pseudo filesystems that will never be mountable (e.g. >> * sockfs, pipefs), but can still be reachable through >> @@ -303,37 +249,6 @@ get_handled_accesses(const struct landlock_ruleset *const domain) >> return access_dom; >> } >> >> -static inline access_mask_t >> -init_layer_masks(const struct landlock_ruleset *const domain, >> - const access_mask_t access_request, >> - layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) >> -{ >> - access_mask_t handled_accesses = 0; >> - size_t layer_level; >> - >> - memset(layer_masks, 0, sizeof(*layer_masks)); >> - /* An empty access request can happen because of O_WRONLY | O_RDWR. */ >> - if (!access_request) >> - return 0; >> - >> - /* Saves all handled accesses per layer. */ >> - for (layer_level = 0; layer_level < domain->num_layers; layer_level++) { >> - const unsigned long access_req = access_request; >> - unsigned long access_bit; >> - >> - for_each_set_bit(access_bit, &access_req, >> - ARRAY_SIZE(*layer_masks)) { >> - if (landlock_get_fs_access_mask(domain, layer_level) & >> - BIT_ULL(access_bit)) { >> - (*layer_masks)[access_bit] |= >> - BIT_ULL(layer_level); >> - handled_accesses |= BIT_ULL(access_bit); >> - } >> - } >> - } >> - return handled_accesses; >> -} >> - >> /* >> * Check that a destination file hierarchy has more restrictions than a source >> * file hierarchy. This is only used for link and rename actions. >> diff --git a/security/landlock/ruleset.c b/security/landlock/ruleset.c >> index 3a5ef356aaa3..671a95e2a345 100644 >> --- a/security/landlock/ruleset.c >> +++ b/security/landlock/ruleset.c >> @@ -564,3 +564,87 @@ landlock_find_rule(const struct landlock_ruleset *const ruleset, >> } >> return NULL; >> } >> + >> +/* >> + * @layer_masks is read and may be updated according to the access request and >> + * the matching rule. >> + * >> + * Returns true if the request is allowed (i.e. relevant layer masks for the >> + * request are empty). >> + */ >> +bool unmask_layers(const struct landlock_rule *const rule, >> + const access_mask_t access_request, >> + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) >> +{ >> + size_t layer_level; >> + >> + if (!access_request || !layer_masks) >> + return true; >> + if (!rule) >> + return false; >> + >> + /* >> + * An access is granted if, for each policy layer, at least one rule >> + * encountered on the pathwalk grants the requested access, >> + * regardless of its position in the layer stack. We must then check >> + * the remaining layers for each inode, from the first added layer to >> + * the last one. When there is multiple requested accesses, for each >> + * policy layer, the full set of requested accesses may not be granted >> + * by only one rule, but by the union (binary OR) of multiple rules. >> + * E.g. /a/b <execute> + /a <read> => /a/b <execute + read> >> + */ >> + for (layer_level = 0; layer_level < rule->num_layers; layer_level++) { >> + const struct landlock_layer *const layer = >> + &rule->layers[layer_level]; >> + const layer_mask_t layer_bit = BIT_ULL(layer->level - 1); >> + const unsigned long access_req = access_request; >> + unsigned long access_bit; >> + bool is_empty; >> + >> + /* >> + * Records in @layer_masks which layer grants access to each >> + * requested access. >> + */ >> + is_empty = true; >> + for_each_set_bit(access_bit, &access_req, >> + ARRAY_SIZE(*layer_masks)) { >> + if (layer->access & BIT_ULL(access_bit)) >> + (*layer_masks)[access_bit] &= ~layer_bit; >> + is_empty = is_empty && !(*layer_masks)[access_bit]; >> + } >> + if (is_empty) >> + return true; >> + } >> + return false; >> +} >> + >> +access_mask_t >> +init_layer_masks(const struct landlock_ruleset *const domain, >> + const access_mask_t access_request, >> + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) >> +{ >> + access_mask_t handled_accesses = 0; >> + size_t layer_level; >> + >> + memset(layer_masks, 0, sizeof(*layer_masks)); >> + /* An empty access request can happen because of O_WRONLY | O_RDWR. */ >> + if (!access_request) >> + return 0; >> + >> + /* Saves all handled accesses per layer. */ >> + for (layer_level = 0; layer_level < domain->num_layers; layer_level++) { >> + const unsigned long access_req = access_request; >> + unsigned long access_bit; >> + >> + for_each_set_bit(access_bit, &access_req, >> + ARRAY_SIZE(*layer_masks)) { >> + if (landlock_get_fs_access_mask(domain, layer_level) & >> + BIT_ULL(access_bit)) { >> + (*layer_masks)[access_bit] |= >> + BIT_ULL(layer_level); >> + handled_accesses |= BIT_ULL(access_bit); >> + } >> + } >> + } >> + return handled_accesses; >> +} >> diff --git a/security/landlock/ruleset.h b/security/landlock/ruleset.h >> index bb1408cc8dd2..d7d9b987829c 100644 >> --- a/security/landlock/ruleset.h >> +++ b/security/landlock/ruleset.h >> @@ -235,4 +235,14 @@ landlock_get_fs_access_mask(const struct landlock_ruleset *const ruleset, >> LANDLOCK_SHIFT_ACCESS_FS) & >> LANDLOCK_MASK_ACCESS_FS; >> } >> + >> +bool unmask_layers(const struct landlock_rule *const rule, >> + const access_mask_t access_request, >> + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]); >> + >> +access_mask_t >> +init_layer_masks(const struct landlock_ruleset *const domain, >> + const access_mask_t access_request, >> + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]); >> + >> #endif /* _SECURITY_LANDLOCK_RULESET_H */ >> -- >> 2.25.1 >> > .
diff --git a/security/landlock/fs.c b/security/landlock/fs.c index cca87fcd222d..b03d6153f628 100644 --- a/security/landlock/fs.c +++ b/security/landlock/fs.c @@ -215,60 +215,6 @@ find_rule(const struct landlock_ruleset *const domain, return rule; } -/* - * @layer_masks is read and may be updated according to the access request and - * the matching rule. - * - * Returns true if the request is allowed (i.e. relevant layer masks for the - * request are empty). - */ -static inline bool -unmask_layers(const struct landlock_rule *const rule, - const access_mask_t access_request, - layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) -{ - size_t layer_level; - - if (!access_request || !layer_masks) - return true; - if (!rule) - return false; - - /* - * An access is granted if, for each policy layer, at least one rule - * encountered on the pathwalk grants the requested access, - * regardless of its position in the layer stack. We must then check - * the remaining layers for each inode, from the first added layer to - * the last one. When there is multiple requested accesses, for each - * policy layer, the full set of requested accesses may not be granted - * by only one rule, but by the union (binary OR) of multiple rules. - * E.g. /a/b <execute> + /a <read> => /a/b <execute + read> - */ - for (layer_level = 0; layer_level < rule->num_layers; layer_level++) { - const struct landlock_layer *const layer = - &rule->layers[layer_level]; - const layer_mask_t layer_bit = BIT_ULL(layer->level - 1); - const unsigned long access_req = access_request; - unsigned long access_bit; - bool is_empty; - - /* - * Records in @layer_masks which layer grants access to each - * requested access. - */ - is_empty = true; - for_each_set_bit(access_bit, &access_req, - ARRAY_SIZE(*layer_masks)) { - if (layer->access & BIT_ULL(access_bit)) - (*layer_masks)[access_bit] &= ~layer_bit; - is_empty = is_empty && !(*layer_masks)[access_bit]; - } - if (is_empty) - return true; - } - return false; -} - /* * Allows access to pseudo filesystems that will never be mountable (e.g. * sockfs, pipefs), but can still be reachable through @@ -303,37 +249,6 @@ get_handled_accesses(const struct landlock_ruleset *const domain) return access_dom; } -static inline access_mask_t -init_layer_masks(const struct landlock_ruleset *const domain, - const access_mask_t access_request, - layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) -{ - access_mask_t handled_accesses = 0; - size_t layer_level; - - memset(layer_masks, 0, sizeof(*layer_masks)); - /* An empty access request can happen because of O_WRONLY | O_RDWR. */ - if (!access_request) - return 0; - - /* Saves all handled accesses per layer. */ - for (layer_level = 0; layer_level < domain->num_layers; layer_level++) { - const unsigned long access_req = access_request; - unsigned long access_bit; - - for_each_set_bit(access_bit, &access_req, - ARRAY_SIZE(*layer_masks)) { - if (landlock_get_fs_access_mask(domain, layer_level) & - BIT_ULL(access_bit)) { - (*layer_masks)[access_bit] |= - BIT_ULL(layer_level); - handled_accesses |= BIT_ULL(access_bit); - } - } - } - return handled_accesses; -} - /* * Check that a destination file hierarchy has more restrictions than a source * file hierarchy. This is only used for link and rename actions. diff --git a/security/landlock/ruleset.c b/security/landlock/ruleset.c index 3a5ef356aaa3..671a95e2a345 100644 --- a/security/landlock/ruleset.c +++ b/security/landlock/ruleset.c @@ -564,3 +564,87 @@ landlock_find_rule(const struct landlock_ruleset *const ruleset, } return NULL; } + +/* + * @layer_masks is read and may be updated according to the access request and + * the matching rule. + * + * Returns true if the request is allowed (i.e. relevant layer masks for the + * request are empty). + */ +bool unmask_layers(const struct landlock_rule *const rule, + const access_mask_t access_request, + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) +{ + size_t layer_level; + + if (!access_request || !layer_masks) + return true; + if (!rule) + return false; + + /* + * An access is granted if, for each policy layer, at least one rule + * encountered on the pathwalk grants the requested access, + * regardless of its position in the layer stack. We must then check + * the remaining layers for each inode, from the first added layer to + * the last one. When there is multiple requested accesses, for each + * policy layer, the full set of requested accesses may not be granted + * by only one rule, but by the union (binary OR) of multiple rules. + * E.g. /a/b <execute> + /a <read> => /a/b <execute + read> + */ + for (layer_level = 0; layer_level < rule->num_layers; layer_level++) { + const struct landlock_layer *const layer = + &rule->layers[layer_level]; + const layer_mask_t layer_bit = BIT_ULL(layer->level - 1); + const unsigned long access_req = access_request; + unsigned long access_bit; + bool is_empty; + + /* + * Records in @layer_masks which layer grants access to each + * requested access. + */ + is_empty = true; + for_each_set_bit(access_bit, &access_req, + ARRAY_SIZE(*layer_masks)) { + if (layer->access & BIT_ULL(access_bit)) + (*layer_masks)[access_bit] &= ~layer_bit; + is_empty = is_empty && !(*layer_masks)[access_bit]; + } + if (is_empty) + return true; + } + return false; +} + +access_mask_t +init_layer_masks(const struct landlock_ruleset *const domain, + const access_mask_t access_request, + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]) +{ + access_mask_t handled_accesses = 0; + size_t layer_level; + + memset(layer_masks, 0, sizeof(*layer_masks)); + /* An empty access request can happen because of O_WRONLY | O_RDWR. */ + if (!access_request) + return 0; + + /* Saves all handled accesses per layer. */ + for (layer_level = 0; layer_level < domain->num_layers; layer_level++) { + const unsigned long access_req = access_request; + unsigned long access_bit; + + for_each_set_bit(access_bit, &access_req, + ARRAY_SIZE(*layer_masks)) { + if (landlock_get_fs_access_mask(domain, layer_level) & + BIT_ULL(access_bit)) { + (*layer_masks)[access_bit] |= + BIT_ULL(layer_level); + handled_accesses |= BIT_ULL(access_bit); + } + } + } + return handled_accesses; +} diff --git a/security/landlock/ruleset.h b/security/landlock/ruleset.h index bb1408cc8dd2..d7d9b987829c 100644 --- a/security/landlock/ruleset.h +++ b/security/landlock/ruleset.h @@ -235,4 +235,14 @@ landlock_get_fs_access_mask(const struct landlock_ruleset *const ruleset, LANDLOCK_SHIFT_ACCESS_FS) & LANDLOCK_MASK_ACCESS_FS; } + +bool unmask_layers(const struct landlock_rule *const rule, + const access_mask_t access_request, + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]); + +access_mask_t +init_layer_masks(const struct landlock_ruleset *const domain, + const access_mask_t access_request, + layer_mask_t (*const layer_masks)[LANDLOCK_NUM_ACCESS_FS]); + #endif /* _SECURITY_LANDLOCK_RULESET_H */
This patch moves unmask_layers() and init_layer_masks() helpers to ruleset.c to share with landlock network implementation in following commits. Signed-off-by: Konstantin Meskhidze <konstantin.meskhidze@huawei.com> --- Changes since v6: * Moves get_handled_accesses() helper from ruleset.c back to fs.c, cause it's not used in coming network commits. Changes since v5: * Splits commit. * Moves init_layer_masks() and get_handled_accesses() helpers to ruleset.c and makes then non-static. * Formats code with clang-format-14. --- security/landlock/fs.c | 85 ------------------------------------- security/landlock/ruleset.c | 84 ++++++++++++++++++++++++++++++++++++ security/landlock/ruleset.h | 10 +++++ 3 files changed, 94 insertions(+), 85 deletions(-) -- 2.25.1