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Message-ID: <20221205215058.143688-3-rmoar@google.com>
Date: Mon, 5 Dec 2022 21:50:58 +0000
From: Rae Moar <rmoar@...gle.com>
To: brendanhiggins@...gle.com, davidgow@...gle.com,
dlatypov@...gle.com, john.johansen@...onical.com
Cc: skhan@...uxfoundation.org, tales.aparecida@...il.com,
kunit-dev@...glegroups.com, linux-kernel@...r.kernel.org,
linux-kselftest@...r.kernel.org, apparmor@...ts.ubuntu.com,
Rae Moar <rmoar@...gle.com>
Subject: [PATCH v2 2/2] apparmor: test: make static symbols visible during
kunit testing
Use macros, VISIBLE_IF_KUNIT and EXPORT_SYMBOL_IF_KUNIT, to allow
static symbols to be conditionally set to be visible during KUnit
testing. Remove the need to include testing file in the implementation
file. Provide example of how static symbols can be dealt with in
Testing. Also, allow policy_unpack_test to be built as a module.
Signed-off-by: Rae Moar <rmoar@...gle.com>
---
Changes since v1:
- Changed the namespace of exported symbols for the apparmor
policy_unpack_test by adding the aa_ prefix.
security/apparmor/Kconfig | 4 +-
security/apparmor/Makefile | 2 +
security/apparmor/include/policy_unpack.h | 50 +++++
security/apparmor/policy_unpack.c | 238 ++++++++++------------
security/apparmor/policy_unpack_test.c | 69 ++++---
5 files changed, 195 insertions(+), 168 deletions(-)
diff --git a/security/apparmor/Kconfig b/security/apparmor/Kconfig
index cb3496e00d8a..f334e7cccf2d 100644
--- a/security/apparmor/Kconfig
+++ b/security/apparmor/Kconfig
@@ -106,8 +106,8 @@ config SECURITY_APPARMOR_PARANOID_LOAD
Disabling the check will speed up policy loads.
config SECURITY_APPARMOR_KUNIT_TEST
- bool "Build KUnit tests for policy_unpack.c" if !KUNIT_ALL_TESTS
- depends on KUNIT=y && SECURITY_APPARMOR
+ tristate "Build KUnit tests for policy_unpack.c" if !KUNIT_ALL_TESTS
+ depends on KUNIT && SECURITY_APPARMOR
default KUNIT_ALL_TESTS
help
This builds the AppArmor KUnit tests.
diff --git a/security/apparmor/Makefile b/security/apparmor/Makefile
index ff23fcfefe19..6a92428375eb 100644
--- a/security/apparmor/Makefile
+++ b/security/apparmor/Makefile
@@ -8,6 +8,8 @@ apparmor-y := apparmorfs.o audit.o capability.o task.o ipc.o lib.o match.o \
resource.o secid.o file.o policy_ns.o label.o mount.o net.o
apparmor-$(CONFIG_SECURITY_APPARMOR_HASH) += crypto.o
+obj-$(CONFIG_SECURITY_APPARMOR_KUNIT_TEST) += policy_unpack_test.o
+
clean-files := capability_names.h rlim_names.h net_names.h
# Build a lower case string table of address family names
diff --git a/security/apparmor/include/policy_unpack.h b/security/apparmor/include/policy_unpack.h
index eb5f7d7f132b..e89b701447bc 100644
--- a/security/apparmor/include/policy_unpack.h
+++ b/security/apparmor/include/policy_unpack.h
@@ -48,6 +48,43 @@ enum {
AAFS_LOADDATA_NDENTS /* count of entries */
};
+/*
+ * The AppArmor interface treats data as a type byte followed by the
+ * actual data. The interface has the notion of a named entry
+ * which has a name (AA_NAME typecode followed by name string) followed by
+ * the entries typecode and data. Named types allow for optional
+ * elements and extensions to be added and tested for without breaking
+ * backwards compatibility.
+ */
+
+enum aa_code {
+ AA_U8,
+ AA_U16,
+ AA_U32,
+ AA_U64,
+ AA_NAME, /* same as string except it is items name */
+ AA_STRING,
+ AA_BLOB,
+ AA_STRUCT,
+ AA_STRUCTEND,
+ AA_LIST,
+ AA_LISTEND,
+ AA_ARRAY,
+ AA_ARRAYEND,
+};
+
+/*
+ * aa_ext is the read of the buffer containing the serialized profile. The
+ * data is copied into a kernel buffer in apparmorfs and then handed off to
+ * the unpack routines.
+ */
+struct aa_ext {
+ void *start;
+ void *end;
+ void *pos; /* pointer to current position in the buffer */
+ u32 version;
+};
+
/*
* struct aa_loaddata - buffer of policy raw_data set
*
@@ -126,4 +163,17 @@ static inline void aa_put_loaddata(struct aa_loaddata *data)
kref_put(&data->count, aa_loaddata_kref);
}
+#if IS_ENABLED(CONFIG_KUNIT)
+bool aa_inbounds(struct aa_ext *e, size_t size);
+size_t aa_unpack_u16_chunk(struct aa_ext *e, char **chunk);
+bool aa_unpack_X(struct aa_ext *e, enum aa_code code);
+bool aa_unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name);
+bool aa_unpack_u32(struct aa_ext *e, u32 *data, const char *name);
+bool aa_unpack_u64(struct aa_ext *e, u64 *data, const char *name);
+size_t aa_unpack_array(struct aa_ext *e, const char *name);
+size_t aa_unpack_blob(struct aa_ext *e, char **blob, const char *name);
+int aa_unpack_str(struct aa_ext *e, const char **string, const char *name);
+int aa_unpack_strdup(struct aa_ext *e, char **string, const char *name);
+#endif
+
#endif /* __POLICY_INTERFACE_H */
diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c
index 55d31bac4f35..12e535fdfa8b 100644
--- a/security/apparmor/policy_unpack.c
+++ b/security/apparmor/policy_unpack.c
@@ -14,6 +14,7 @@
*/
#include <asm/unaligned.h>
+#include <kunit/visibility.h>
#include <linux/ctype.h>
#include <linux/errno.h>
#include <linux/zlib.h>
@@ -37,43 +38,6 @@
#define v7 7
#define v8 8 /* full network masking */
-/*
- * The AppArmor interface treats data as a type byte followed by the
- * actual data. The interface has the notion of a named entry
- * which has a name (AA_NAME typecode followed by name string) followed by
- * the entries typecode and data. Named types allow for optional
- * elements and extensions to be added and tested for without breaking
- * backwards compatibility.
- */
-
-enum aa_code {
- AA_U8,
- AA_U16,
- AA_U32,
- AA_U64,
- AA_NAME, /* same as string except it is items name */
- AA_STRING,
- AA_BLOB,
- AA_STRUCT,
- AA_STRUCTEND,
- AA_LIST,
- AA_LISTEND,
- AA_ARRAY,
- AA_ARRAYEND,
-};
-
-/*
- * aa_ext is the read of the buffer containing the serialized profile. The
- * data is copied into a kernel buffer in apparmorfs and then handed off to
- * the unpack routines.
- */
-struct aa_ext {
- void *start;
- void *end;
- void *pos; /* pointer to current position in the buffer */
- u32 version;
-};
-
/* audit callback for unpack fields */
static void audit_cb(struct audit_buffer *ab, void *va)
{
@@ -199,10 +163,11 @@ struct aa_loaddata *aa_loaddata_alloc(size_t size)
}
/* test if read will be in packed data bounds */
-static bool inbounds(struct aa_ext *e, size_t size)
+VISIBLE_IF_KUNIT bool aa_inbounds(struct aa_ext *e, size_t size)
{
return (size <= e->end - e->pos);
}
+EXPORT_SYMBOL_IF_KUNIT(aa_inbounds);
static void *kvmemdup(const void *src, size_t len)
{
@@ -214,22 +179,22 @@ static void *kvmemdup(const void *src, size_t len)
}
/**
- * unpack_u16_chunk - test and do bounds checking for a u16 size based chunk
+ * aa_unpack_u16_chunk - test and do bounds checking for a u16 size based chunk
* @e: serialized data read head (NOT NULL)
* @chunk: start address for chunk of data (NOT NULL)
*
* Returns: the size of chunk found with the read head at the end of the chunk.
*/
-static size_t unpack_u16_chunk(struct aa_ext *e, char **chunk)
+VISIBLE_IF_KUNIT size_t aa_unpack_u16_chunk(struct aa_ext *e, char **chunk)
{
size_t size = 0;
void *pos = e->pos;
- if (!inbounds(e, sizeof(u16)))
+ if (!aa_inbounds(e, sizeof(u16)))
goto fail;
size = le16_to_cpu(get_unaligned((__le16 *) e->pos));
e->pos += sizeof(__le16);
- if (!inbounds(e, size))
+ if (!aa_inbounds(e, size))
goto fail;
*chunk = e->pos;
e->pos += size;
@@ -239,20 +204,22 @@ static size_t unpack_u16_chunk(struct aa_ext *e, char **chunk)
e->pos = pos;
return 0;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_u16_chunk);
/* unpack control byte */
-static bool unpack_X(struct aa_ext *e, enum aa_code code)
+VISIBLE_IF_KUNIT bool aa_unpack_X(struct aa_ext *e, enum aa_code code)
{
- if (!inbounds(e, 1))
+ if (!aa_inbounds(e, 1))
return false;
if (*(u8 *) e->pos != code)
return false;
e->pos++;
return true;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_X);
/**
- * unpack_nameX - check is the next element is of type X with a name of @name
+ * aa_unpack_nameX - check is the next element is of type X with a name of @name
* @e: serialized data extent information (NOT NULL)
* @code: type code
* @name: name to match to the serialized element. (MAYBE NULL)
@@ -267,7 +234,7 @@ static bool unpack_X(struct aa_ext *e, enum aa_code code)
*
* Returns: false if either match fails, the read head does not move
*/
-static bool unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
+VISIBLE_IF_KUNIT bool aa_unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
{
/*
* May need to reset pos if name or type doesn't match
@@ -277,9 +244,9 @@ static bool unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
* Check for presence of a tagname, and if present name size
* AA_NAME tag value is a u16.
*/
- if (unpack_X(e, AA_NAME)) {
+ if (aa_unpack_X(e, AA_NAME)) {
char *tag = NULL;
- size_t size = unpack_u16_chunk(e, &tag);
+ size_t size = aa_unpack_u16_chunk(e, &tag);
/* if a name is specified it must match. otherwise skip tag */
if (name && (!size || tag[size-1] != '\0' || strcmp(name, tag)))
goto fail;
@@ -289,20 +256,21 @@ static bool unpack_nameX(struct aa_ext *e, enum aa_code code, const char *name)
}
/* now check if type code matches */
- if (unpack_X(e, code))
+ if (aa_unpack_X(e, code))
return true;
fail:
e->pos = pos;
return false;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_nameX);
static bool unpack_u8(struct aa_ext *e, u8 *data, const char *name)
{
void *pos = e->pos;
- if (unpack_nameX(e, AA_U8, name)) {
- if (!inbounds(e, sizeof(u8)))
+ if (aa_unpack_nameX(e, AA_U8, name)) {
+ if (!aa_inbounds(e, sizeof(u8)))
goto fail;
if (data)
*data = *((u8 *)e->pos);
@@ -315,12 +283,12 @@ static bool unpack_u8(struct aa_ext *e, u8 *data, const char *name)
return false;
}
-static bool unpack_u32(struct aa_ext *e, u32 *data, const char *name)
+VISIBLE_IF_KUNIT bool aa_unpack_u32(struct aa_ext *e, u32 *data, const char *name)
{
void *pos = e->pos;
- if (unpack_nameX(e, AA_U32, name)) {
- if (!inbounds(e, sizeof(u32)))
+ if (aa_unpack_nameX(e, AA_U32, name)) {
+ if (!aa_inbounds(e, sizeof(u32)))
goto fail;
if (data)
*data = le32_to_cpu(get_unaligned((__le32 *) e->pos));
@@ -332,13 +300,14 @@ static bool unpack_u32(struct aa_ext *e, u32 *data, const char *name)
e->pos = pos;
return false;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_u32);
-static bool unpack_u64(struct aa_ext *e, u64 *data, const char *name)
+VISIBLE_IF_KUNIT bool aa_unpack_u64(struct aa_ext *e, u64 *data, const char *name)
{
void *pos = e->pos;
- if (unpack_nameX(e, AA_U64, name)) {
- if (!inbounds(e, sizeof(u64)))
+ if (aa_unpack_nameX(e, AA_U64, name)) {
+ if (!aa_inbounds(e, sizeof(u64)))
goto fail;
if (data)
*data = le64_to_cpu(get_unaligned((__le64 *) e->pos));
@@ -350,14 +319,15 @@ static bool unpack_u64(struct aa_ext *e, u64 *data, const char *name)
e->pos = pos;
return false;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_u64);
-static size_t unpack_array(struct aa_ext *e, const char *name)
+VISIBLE_IF_KUNIT size_t aa_unpack_array(struct aa_ext *e, const char *name)
{
void *pos = e->pos;
- if (unpack_nameX(e, AA_ARRAY, name)) {
+ if (aa_unpack_nameX(e, AA_ARRAY, name)) {
int size;
- if (!inbounds(e, sizeof(u16)))
+ if (!aa_inbounds(e, sizeof(u16)))
goto fail;
size = (int)le16_to_cpu(get_unaligned((__le16 *) e->pos));
e->pos += sizeof(u16);
@@ -368,18 +338,19 @@ static size_t unpack_array(struct aa_ext *e, const char *name)
e->pos = pos;
return 0;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_array);
-static size_t unpack_blob(struct aa_ext *e, char **blob, const char *name)
+VISIBLE_IF_KUNIT size_t aa_unpack_blob(struct aa_ext *e, char **blob, const char *name)
{
void *pos = e->pos;
- if (unpack_nameX(e, AA_BLOB, name)) {
+ if (aa_unpack_nameX(e, AA_BLOB, name)) {
u32 size;
- if (!inbounds(e, sizeof(u32)))
+ if (!aa_inbounds(e, sizeof(u32)))
goto fail;
size = le32_to_cpu(get_unaligned((__le32 *) e->pos));
e->pos += sizeof(u32);
- if (inbounds(e, (size_t) size)) {
+ if (aa_inbounds(e, (size_t) size)) {
*blob = e->pos;
e->pos += size;
return size;
@@ -390,15 +361,16 @@ static size_t unpack_blob(struct aa_ext *e, char **blob, const char *name)
e->pos = pos;
return 0;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_blob);
-static int unpack_str(struct aa_ext *e, const char **string, const char *name)
+VISIBLE_IF_KUNIT int aa_unpack_str(struct aa_ext *e, const char **string, const char *name)
{
char *src_str;
size_t size = 0;
void *pos = e->pos;
*string = NULL;
- if (unpack_nameX(e, AA_STRING, name)) {
- size = unpack_u16_chunk(e, &src_str);
+ if (aa_unpack_nameX(e, AA_STRING, name)) {
+ size = aa_unpack_u16_chunk(e, &src_str);
if (size) {
/* strings are null terminated, length is size - 1 */
if (src_str[size - 1] != 0)
@@ -413,12 +385,13 @@ static int unpack_str(struct aa_ext *e, const char **string, const char *name)
e->pos = pos;
return 0;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_str);
-static int unpack_strdup(struct aa_ext *e, char **string, const char *name)
+VISIBLE_IF_KUNIT int aa_unpack_strdup(struct aa_ext *e, char **string, const char *name)
{
const char *tmp;
void *pos = e->pos;
- int res = unpack_str(e, &tmp, name);
+ int res = aa_unpack_str(e, &tmp, name);
*string = NULL;
if (!res)
@@ -432,6 +405,7 @@ static int unpack_strdup(struct aa_ext *e, char **string, const char *name)
return res;
}
+EXPORT_SYMBOL_IF_KUNIT(aa_unpack_strdup);
/**
@@ -446,7 +420,7 @@ static struct aa_dfa *unpack_dfa(struct aa_ext *e)
size_t size;
struct aa_dfa *dfa = NULL;
- size = unpack_blob(e, &blob, "aadfa");
+ size = aa_unpack_blob(e, &blob, "aadfa");
if (size) {
/*
* The dfa is aligned with in the blob to 8 bytes
@@ -482,10 +456,10 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
void *saved_pos = e->pos;
/* exec table is optional */
- if (unpack_nameX(e, AA_STRUCT, "xtable")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "xtable")) {
int i, size;
- size = unpack_array(e, NULL);
+ size = aa_unpack_array(e, NULL);
/* currently 4 exec bits and entries 0-3 are reserved iupcx */
if (size > 16 - 4)
goto fail;
@@ -497,8 +471,8 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
profile->file.trans.size = size;
for (i = 0; i < size; i++) {
char *str;
- int c, j, pos, size2 = unpack_strdup(e, &str, NULL);
- /* unpack_strdup verifies that the last character is
+ int c, j, pos, size2 = aa_unpack_strdup(e, &str, NULL);
+ /* aa_unpack_strdup verifies that the last character is
* null termination byte.
*/
if (!size2)
@@ -521,7 +495,7 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
goto fail;
/* beginning with : requires an embedded \0,
* verify that exactly 1 internal \0 exists
- * trailing \0 already verified by unpack_strdup
+ * trailing \0 already verified by aa_unpack_strdup
*
* convert \0 back to : for label_parse
*/
@@ -533,9 +507,9 @@ static bool unpack_trans_table(struct aa_ext *e, struct aa_profile *profile)
/* fail - all other cases with embedded \0 */
goto fail;
}
- if (!unpack_nameX(e, AA_ARRAYEND, NULL))
+ if (!aa_unpack_nameX(e, AA_ARRAYEND, NULL))
goto fail;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
}
return true;
@@ -550,21 +524,21 @@ static bool unpack_xattrs(struct aa_ext *e, struct aa_profile *profile)
{
void *pos = e->pos;
- if (unpack_nameX(e, AA_STRUCT, "xattrs")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "xattrs")) {
int i, size;
- size = unpack_array(e, NULL);
+ size = aa_unpack_array(e, NULL);
profile->xattr_count = size;
profile->xattrs = kcalloc(size, sizeof(char *), GFP_KERNEL);
if (!profile->xattrs)
goto fail;
for (i = 0; i < size; i++) {
- if (!unpack_strdup(e, &profile->xattrs[i], NULL))
+ if (!aa_unpack_strdup(e, &profile->xattrs[i], NULL))
goto fail;
}
- if (!unpack_nameX(e, AA_ARRAYEND, NULL))
+ if (!aa_unpack_nameX(e, AA_ARRAYEND, NULL))
goto fail;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
}
@@ -580,8 +554,8 @@ static bool unpack_secmark(struct aa_ext *e, struct aa_profile *profile)
void *pos = e->pos;
int i, size;
- if (unpack_nameX(e, AA_STRUCT, "secmark")) {
- size = unpack_array(e, NULL);
+ if (aa_unpack_nameX(e, AA_STRUCT, "secmark")) {
+ size = aa_unpack_array(e, NULL);
profile->secmark = kcalloc(size, sizeof(struct aa_secmark),
GFP_KERNEL);
@@ -595,12 +569,12 @@ static bool unpack_secmark(struct aa_ext *e, struct aa_profile *profile)
goto fail;
if (!unpack_u8(e, &profile->secmark[i].deny, NULL))
goto fail;
- if (!unpack_strdup(e, &profile->secmark[i].label, NULL))
+ if (!aa_unpack_strdup(e, &profile->secmark[i].label, NULL))
goto fail;
}
- if (!unpack_nameX(e, AA_ARRAYEND, NULL))
+ if (!aa_unpack_nameX(e, AA_ARRAYEND, NULL))
goto fail;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
}
@@ -624,26 +598,26 @@ static bool unpack_rlimits(struct aa_ext *e, struct aa_profile *profile)
void *pos = e->pos;
/* rlimits are optional */
- if (unpack_nameX(e, AA_STRUCT, "rlimits")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "rlimits")) {
int i, size;
u32 tmp = 0;
- if (!unpack_u32(e, &tmp, NULL))
+ if (!aa_unpack_u32(e, &tmp, NULL))
goto fail;
profile->rlimits.mask = tmp;
- size = unpack_array(e, NULL);
+ size = aa_unpack_array(e, NULL);
if (size > RLIM_NLIMITS)
goto fail;
for (i = 0; i < size; i++) {
u64 tmp2 = 0;
int a = aa_map_resource(i);
- if (!unpack_u64(e, &tmp2, NULL))
+ if (!aa_unpack_u64(e, &tmp2, NULL))
goto fail;
profile->rlimits.limits[a].rlim_max = tmp2;
}
- if (!unpack_nameX(e, AA_ARRAYEND, NULL))
+ if (!aa_unpack_nameX(e, AA_ARRAYEND, NULL))
goto fail;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
}
return true;
@@ -691,9 +665,9 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
*ns_name = NULL;
/* check that we have the right struct being passed */
- if (!unpack_nameX(e, AA_STRUCT, "profile"))
+ if (!aa_unpack_nameX(e, AA_STRUCT, "profile"))
goto fail;
- if (!unpack_str(e, &name, NULL))
+ if (!aa_unpack_str(e, &name, NULL))
goto fail;
if (*name == '\0')
goto fail;
@@ -713,10 +687,10 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
return ERR_PTR(-ENOMEM);
/* profile renaming is optional */
- (void) unpack_str(e, &profile->rename, "rename");
+ (void) aa_unpack_str(e, &profile->rename, "rename");
/* attachment string is optional */
- (void) unpack_str(e, &profile->attach, "attach");
+ (void) aa_unpack_str(e, &profile->attach, "attach");
/* xmatch is optional and may be NULL */
profile->xmatch = unpack_dfa(e);
@@ -728,7 +702,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
}
/* xmatch_len is not optional if xmatch is set */
if (profile->xmatch) {
- if (!unpack_u32(e, &tmp, NULL)) {
+ if (!aa_unpack_u32(e, &tmp, NULL)) {
info = "missing xmatch len";
goto fail;
}
@@ -736,15 +710,15 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
}
/* disconnected attachment string is optional */
- (void) unpack_str(e, &profile->disconnected, "disconnected");
+ (void) aa_unpack_str(e, &profile->disconnected, "disconnected");
/* per profile debug flags (complain, audit) */
- if (!unpack_nameX(e, AA_STRUCT, "flags")) {
+ if (!aa_unpack_nameX(e, AA_STRUCT, "flags")) {
info = "profile missing flags";
goto fail;
}
info = "failed to unpack profile flags";
- if (!unpack_u32(e, &tmp, NULL))
+ if (!aa_unpack_u32(e, &tmp, NULL))
goto fail;
if (tmp & PACKED_FLAG_HAT)
profile->label.flags |= FLAG_HAT;
@@ -752,7 +726,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
profile->label.flags |= FLAG_DEBUG1;
if (tmp & PACKED_FLAG_DEBUG2)
profile->label.flags |= FLAG_DEBUG2;
- if (!unpack_u32(e, &tmp, NULL))
+ if (!aa_unpack_u32(e, &tmp, NULL))
goto fail;
if (tmp == PACKED_MODE_COMPLAIN || (e->version & FORCE_COMPLAIN_FLAG)) {
profile->mode = APPARMOR_COMPLAIN;
@@ -766,16 +740,16 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
} else {
goto fail;
}
- if (!unpack_u32(e, &tmp, NULL))
+ if (!aa_unpack_u32(e, &tmp, NULL))
goto fail;
if (tmp)
profile->audit = AUDIT_ALL;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
/* path_flags is optional */
- if (unpack_u32(e, &profile->path_flags, "path_flags"))
+ if (aa_unpack_u32(e, &profile->path_flags, "path_flags"))
profile->path_flags |= profile->label.flags &
PATH_MEDIATE_DELETED;
else
@@ -783,38 +757,38 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
profile->path_flags = PATH_MEDIATE_DELETED;
info = "failed to unpack profile capabilities";
- if (!unpack_u32(e, &(profile->caps.allow.cap[0]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.allow.cap[0]), NULL))
goto fail;
- if (!unpack_u32(e, &(profile->caps.audit.cap[0]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.audit.cap[0]), NULL))
goto fail;
- if (!unpack_u32(e, &(profile->caps.quiet.cap[0]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.quiet.cap[0]), NULL))
goto fail;
- if (!unpack_u32(e, &tmpcap.cap[0], NULL))
+ if (!aa_unpack_u32(e, &tmpcap.cap[0], NULL))
goto fail;
info = "failed to unpack upper profile capabilities";
- if (unpack_nameX(e, AA_STRUCT, "caps64")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "caps64")) {
/* optional upper half of 64 bit caps */
- if (!unpack_u32(e, &(profile->caps.allow.cap[1]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.allow.cap[1]), NULL))
goto fail;
- if (!unpack_u32(e, &(profile->caps.audit.cap[1]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.audit.cap[1]), NULL))
goto fail;
- if (!unpack_u32(e, &(profile->caps.quiet.cap[1]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.quiet.cap[1]), NULL))
goto fail;
- if (!unpack_u32(e, &(tmpcap.cap[1]), NULL))
+ if (!aa_unpack_u32(e, &(tmpcap.cap[1]), NULL))
goto fail;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
}
info = "failed to unpack extended profile capabilities";
- if (unpack_nameX(e, AA_STRUCT, "capsx")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "capsx")) {
/* optional extended caps mediation mask */
- if (!unpack_u32(e, &(profile->caps.extended.cap[0]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.extended.cap[0]), NULL))
goto fail;
- if (!unpack_u32(e, &(profile->caps.extended.cap[1]), NULL))
+ if (!aa_unpack_u32(e, &(profile->caps.extended.cap[1]), NULL))
goto fail;
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
}
@@ -833,7 +807,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
goto fail;
}
- if (unpack_nameX(e, AA_STRUCT, "policydb")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "policydb")) {
/* generic policy dfa - optional and may be NULL */
info = "failed to unpack policydb";
profile->policy.dfa = unpack_dfa(e);
@@ -845,7 +819,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
error = -EPROTO;
goto fail;
}
- if (!unpack_u32(e, &profile->policy.start[0], "start"))
+ if (!aa_unpack_u32(e, &profile->policy.start[0], "start"))
/* default start state */
profile->policy.start[0] = DFA_START;
/* setup class index */
@@ -855,7 +829,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
profile->policy.start[0],
i);
}
- if (!unpack_nameX(e, AA_STRUCTEND, NULL))
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL))
goto fail;
} else
profile->policy.dfa = aa_get_dfa(nulldfa);
@@ -868,7 +842,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
info = "failed to unpack profile file rules";
goto fail;
} else if (profile->file.dfa) {
- if (!unpack_u32(e, &profile->file.start, "dfa_start"))
+ if (!aa_unpack_u32(e, &profile->file.start, "dfa_start"))
/* default start state */
profile->file.start = DFA_START;
} else if (profile->policy.dfa &&
@@ -883,7 +857,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
goto fail;
}
- if (unpack_nameX(e, AA_STRUCT, "data")) {
+ if (aa_unpack_nameX(e, AA_STRUCT, "data")) {
info = "out of memory";
profile->data = kzalloc(sizeof(*profile->data), GFP_KERNEL);
if (!profile->data)
@@ -901,7 +875,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
goto fail;
}
- while (unpack_strdup(e, &key, NULL)) {
+ while (aa_unpack_strdup(e, &key, NULL)) {
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
kfree_sensitive(key);
@@ -909,7 +883,7 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
}
data->key = key;
- data->size = unpack_blob(e, &data->data, NULL);
+ data->size = aa_unpack_blob(e, &data->data, NULL);
data->data = kvmemdup(data->data, data->size);
if (data->size && !data->data) {
kfree_sensitive(data->key);
@@ -921,13 +895,13 @@ static struct aa_profile *unpack_profile(struct aa_ext *e, char **ns_name)
profile->data->p);
}
- if (!unpack_nameX(e, AA_STRUCTEND, NULL)) {
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL)) {
info = "failed to unpack end of key, value data table";
goto fail;
}
}
- if (!unpack_nameX(e, AA_STRUCTEND, NULL)) {
+ if (!aa_unpack_nameX(e, AA_STRUCTEND, NULL)) {
info = "failed to unpack end of profile";
goto fail;
}
@@ -960,7 +934,7 @@ static int verify_header(struct aa_ext *e, int required, const char **ns)
*ns = NULL;
/* get the interface version */
- if (!unpack_u32(e, &e->version, "version")) {
+ if (!aa_unpack_u32(e, &e->version, "version")) {
if (required) {
audit_iface(NULL, NULL, NULL, "invalid profile format",
e, error);
@@ -979,7 +953,7 @@ static int verify_header(struct aa_ext *e, int required, const char **ns)
}
/* read the namespace if present */
- if (unpack_str(e, &name, "namespace")) {
+ if (aa_unpack_str(e, &name, "namespace")) {
if (*name == '\0') {
audit_iface(NULL, NULL, NULL, "invalid namespace name",
e, error);
@@ -1251,7 +1225,3 @@ int aa_unpack(struct aa_loaddata *udata, struct list_head *lh,
return error;
}
-
-#ifdef CONFIG_SECURITY_APPARMOR_KUNIT_TEST
-#include "policy_unpack_test.c"
-#endif /* CONFIG_SECURITY_APPARMOR_KUNIT_TEST */
diff --git a/security/apparmor/policy_unpack_test.c b/security/apparmor/policy_unpack_test.c
index 0a969b2e03db..f25cf2a023d5 100644
--- a/security/apparmor/policy_unpack_test.c
+++ b/security/apparmor/policy_unpack_test.c
@@ -4,6 +4,7 @@
*/
#include <kunit/test.h>
+#include <kunit/visibility.h>
#include "include/policy.h"
#include "include/policy_unpack.h"
@@ -43,6 +44,8 @@
#define TEST_ARRAY_BUF_OFFSET \
(TEST_NAMED_ARRAY_BUF_OFFSET + 3 + strlen(TEST_ARRAY_NAME) + 1)
+MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
+
struct policy_unpack_fixture {
struct aa_ext *e;
size_t e_size;
@@ -125,16 +128,16 @@ static void policy_unpack_test_inbounds_when_inbounds(struct kunit *test)
{
struct policy_unpack_fixture *puf = test->priv;
- KUNIT_EXPECT_TRUE(test, inbounds(puf->e, 0));
- KUNIT_EXPECT_TRUE(test, inbounds(puf->e, puf->e_size / 2));
- KUNIT_EXPECT_TRUE(test, inbounds(puf->e, puf->e_size));
+ KUNIT_EXPECT_TRUE(test, aa_inbounds(puf->e, 0));
+ KUNIT_EXPECT_TRUE(test, aa_inbounds(puf->e, puf->e_size / 2));
+ KUNIT_EXPECT_TRUE(test, aa_inbounds(puf->e, puf->e_size));
}
static void policy_unpack_test_inbounds_when_out_of_bounds(struct kunit *test)
{
struct policy_unpack_fixture *puf = test->priv;
- KUNIT_EXPECT_FALSE(test, inbounds(puf->e, puf->e_size + 1));
+ KUNIT_EXPECT_FALSE(test, aa_inbounds(puf->e, puf->e_size + 1));
}
static void policy_unpack_test_unpack_array_with_null_name(struct kunit *test)
@@ -144,7 +147,7 @@ static void policy_unpack_test_unpack_array_with_null_name(struct kunit *test)
puf->e->pos += TEST_ARRAY_BUF_OFFSET;
- array_size = unpack_array(puf->e, NULL);
+ array_size = aa_unpack_array(puf->e, NULL);
KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -159,7 +162,7 @@ static void policy_unpack_test_unpack_array_with_name(struct kunit *test)
puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET;
- array_size = unpack_array(puf->e, name);
+ array_size = aa_unpack_array(puf->e, name);
KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -175,7 +178,7 @@ static void policy_unpack_test_unpack_array_out_of_bounds(struct kunit *test)
puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET;
puf->e->end = puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16);
- array_size = unpack_array(puf->e, name);
+ array_size = aa_unpack_array(puf->e, name);
KUNIT_EXPECT_EQ(test, array_size, 0);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -189,7 +192,7 @@ static void policy_unpack_test_unpack_blob_with_null_name(struct kunit *test)
size_t size;
puf->e->pos += TEST_BLOB_BUF_OFFSET;
- size = unpack_blob(puf->e, &blob, NULL);
+ size = aa_unpack_blob(puf->e, &blob, NULL);
KUNIT_ASSERT_EQ(test, size, TEST_BLOB_DATA_SIZE);
KUNIT_EXPECT_TRUE(test,
@@ -203,7 +206,7 @@ static void policy_unpack_test_unpack_blob_with_name(struct kunit *test)
size_t size;
puf->e->pos += TEST_NAMED_BLOB_BUF_OFFSET;
- size = unpack_blob(puf->e, &blob, TEST_BLOB_NAME);
+ size = aa_unpack_blob(puf->e, &blob, TEST_BLOB_NAME);
KUNIT_ASSERT_EQ(test, size, TEST_BLOB_DATA_SIZE);
KUNIT_EXPECT_TRUE(test,
@@ -222,7 +225,7 @@ static void policy_unpack_test_unpack_blob_out_of_bounds(struct kunit *test)
puf->e->end = puf->e->start + TEST_BLOB_BUF_OFFSET
+ TEST_BLOB_DATA_SIZE - 1;
- size = unpack_blob(puf->e, &blob, TEST_BLOB_NAME);
+ size = aa_unpack_blob(puf->e, &blob, TEST_BLOB_NAME);
KUNIT_EXPECT_EQ(test, size, 0);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start);
@@ -235,7 +238,7 @@ static void policy_unpack_test_unpack_str_with_null_name(struct kunit *test)
size_t size;
puf->e->pos += TEST_STRING_BUF_OFFSET;
- size = unpack_str(puf->e, &string, NULL);
+ size = aa_unpack_str(puf->e, &string, NULL);
KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA);
@@ -247,7 +250,7 @@ static void policy_unpack_test_unpack_str_with_name(struct kunit *test)
const char *string = NULL;
size_t size;
- size = unpack_str(puf->e, &string, TEST_STRING_NAME);
+ size = aa_unpack_str(puf->e, &string, TEST_STRING_NAME);
KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA);
@@ -263,7 +266,7 @@ static void policy_unpack_test_unpack_str_out_of_bounds(struct kunit *test)
puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET
+ strlen(TEST_STRING_DATA) - 1;
- size = unpack_str(puf->e, &string, TEST_STRING_NAME);
+ size = aa_unpack_str(puf->e, &string, TEST_STRING_NAME);
KUNIT_EXPECT_EQ(test, size, 0);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start);
@@ -276,7 +279,7 @@ static void policy_unpack_test_unpack_strdup_with_null_name(struct kunit *test)
size_t size;
puf->e->pos += TEST_STRING_BUF_OFFSET;
- size = unpack_strdup(puf->e, &string, NULL);
+ size = aa_unpack_strdup(puf->e, &string, NULL);
KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
KUNIT_EXPECT_FALSE(test,
@@ -291,7 +294,7 @@ static void policy_unpack_test_unpack_strdup_with_name(struct kunit *test)
char *string = NULL;
size_t size;
- size = unpack_strdup(puf->e, &string, TEST_STRING_NAME);
+ size = aa_unpack_strdup(puf->e, &string, TEST_STRING_NAME);
KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1);
KUNIT_EXPECT_FALSE(test,
@@ -310,7 +313,7 @@ static void policy_unpack_test_unpack_strdup_out_of_bounds(struct kunit *test)
puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET
+ strlen(TEST_STRING_DATA) - 1;
- size = unpack_strdup(puf->e, &string, TEST_STRING_NAME);
+ size = aa_unpack_strdup(puf->e, &string, TEST_STRING_NAME);
KUNIT_EXPECT_EQ(test, size, 0);
KUNIT_EXPECT_NULL(test, string);
@@ -324,7 +327,7 @@ static void policy_unpack_test_unpack_nameX_with_null_name(struct kunit *test)
puf->e->pos += TEST_U32_BUF_OFFSET;
- success = unpack_nameX(puf->e, AA_U32, NULL);
+ success = aa_unpack_nameX(puf->e, AA_U32, NULL);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -338,7 +341,7 @@ static void policy_unpack_test_unpack_nameX_with_wrong_code(struct kunit *test)
puf->e->pos += TEST_U32_BUF_OFFSET;
- success = unpack_nameX(puf->e, AA_BLOB, NULL);
+ success = aa_unpack_nameX(puf->e, AA_BLOB, NULL);
KUNIT_EXPECT_FALSE(test, success);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -353,7 +356,7 @@ static void policy_unpack_test_unpack_nameX_with_name(struct kunit *test)
puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
- success = unpack_nameX(puf->e, AA_U32, name);
+ success = aa_unpack_nameX(puf->e, AA_U32, name);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -368,7 +371,7 @@ static void policy_unpack_test_unpack_nameX_with_wrong_name(struct kunit *test)
puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
- success = unpack_nameX(puf->e, AA_U32, name);
+ success = aa_unpack_nameX(puf->e, AA_U32, name);
KUNIT_EXPECT_FALSE(test, success);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -389,7 +392,7 @@ static void policy_unpack_test_unpack_u16_chunk_basic(struct kunit *test)
*/
puf->e->end += TEST_U16_DATA;
- size = unpack_u16_chunk(puf->e, &chunk);
+ size = aa_unpack_u16_chunk(puf->e, &chunk);
KUNIT_EXPECT_PTR_EQ(test, chunk,
puf->e->start + TEST_U16_OFFSET + 2);
@@ -406,7 +409,7 @@ static void policy_unpack_test_unpack_u16_chunk_out_of_bounds_1(
puf->e->pos = puf->e->end - 1;
- size = unpack_u16_chunk(puf->e, &chunk);
+ size = aa_unpack_u16_chunk(puf->e, &chunk);
KUNIT_EXPECT_EQ(test, size, 0);
KUNIT_EXPECT_NULL(test, chunk);
@@ -428,7 +431,7 @@ static void policy_unpack_test_unpack_u16_chunk_out_of_bounds_2(
*/
puf->e->end = puf->e->pos + TEST_U16_DATA - 1;
- size = unpack_u16_chunk(puf->e, &chunk);
+ size = aa_unpack_u16_chunk(puf->e, &chunk);
KUNIT_EXPECT_EQ(test, size, 0);
KUNIT_EXPECT_NULL(test, chunk);
@@ -443,7 +446,7 @@ static void policy_unpack_test_unpack_u32_with_null_name(struct kunit *test)
puf->e->pos += TEST_U32_BUF_OFFSET;
- success = unpack_u32(puf->e, &data, NULL);
+ success = aa_unpack_u32(puf->e, &data, NULL);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_EQ(test, data, TEST_U32_DATA);
@@ -460,7 +463,7 @@ static void policy_unpack_test_unpack_u32_with_name(struct kunit *test)
puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
- success = unpack_u32(puf->e, &data, name);
+ success = aa_unpack_u32(puf->e, &data, name);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_EQ(test, data, TEST_U32_DATA);
@@ -478,7 +481,7 @@ static void policy_unpack_test_unpack_u32_out_of_bounds(struct kunit *test)
puf->e->pos += TEST_NAMED_U32_BUF_OFFSET;
puf->e->end = puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32);
- success = unpack_u32(puf->e, &data, name);
+ success = aa_unpack_u32(puf->e, &data, name);
KUNIT_EXPECT_FALSE(test, success);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -493,7 +496,7 @@ static void policy_unpack_test_unpack_u64_with_null_name(struct kunit *test)
puf->e->pos += TEST_U64_BUF_OFFSET;
- success = unpack_u64(puf->e, &data, NULL);
+ success = aa_unpack_u64(puf->e, &data, NULL);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_EQ(test, data, TEST_U64_DATA);
@@ -510,7 +513,7 @@ static void policy_unpack_test_unpack_u64_with_name(struct kunit *test)
puf->e->pos += TEST_NAMED_U64_BUF_OFFSET;
- success = unpack_u64(puf->e, &data, name);
+ success = aa_unpack_u64(puf->e, &data, name);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_EQ(test, data, TEST_U64_DATA);
@@ -528,7 +531,7 @@ static void policy_unpack_test_unpack_u64_out_of_bounds(struct kunit *test)
puf->e->pos += TEST_NAMED_U64_BUF_OFFSET;
puf->e->end = puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64);
- success = unpack_u64(puf->e, &data, name);
+ success = aa_unpack_u64(puf->e, &data, name);
KUNIT_EXPECT_FALSE(test, success);
KUNIT_EXPECT_PTR_EQ(test, puf->e->pos,
@@ -538,7 +541,7 @@ static void policy_unpack_test_unpack_u64_out_of_bounds(struct kunit *test)
static void policy_unpack_test_unpack_X_code_match(struct kunit *test)
{
struct policy_unpack_fixture *puf = test->priv;
- bool success = unpack_X(puf->e, AA_NAME);
+ bool success = aa_unpack_X(puf->e, AA_NAME);
KUNIT_EXPECT_TRUE(test, success);
KUNIT_EXPECT_TRUE(test, puf->e->pos == puf->e->start + 1);
@@ -547,7 +550,7 @@ static void policy_unpack_test_unpack_X_code_match(struct kunit *test)
static void policy_unpack_test_unpack_X_code_mismatch(struct kunit *test)
{
struct policy_unpack_fixture *puf = test->priv;
- bool success = unpack_X(puf->e, AA_STRING);
+ bool success = aa_unpack_X(puf->e, AA_STRING);
KUNIT_EXPECT_FALSE(test, success);
KUNIT_EXPECT_TRUE(test, puf->e->pos == puf->e->start);
@@ -559,7 +562,7 @@ static void policy_unpack_test_unpack_X_out_of_bounds(struct kunit *test)
bool success;
puf->e->pos = puf->e->end;
- success = unpack_X(puf->e, AA_NAME);
+ success = aa_unpack_X(puf->e, AA_NAME);
KUNIT_EXPECT_FALSE(test, success);
}
@@ -605,3 +608,5 @@ static struct kunit_suite apparmor_policy_unpack_test_module = {
};
kunit_test_suite(apparmor_policy_unpack_test_module);
+
+MODULE_LICENSE("GPL");
--
2.39.0.rc0.267.gcb52ba06e7-goog
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