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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 1/4] Expand Xen IOMEMCON to 64 bits
This change is required to support static I/O memory range labeling for
systems with over 16TB of physical address space.
Signed-off-by: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
---
checkpolicy/policy_define.c | 6 +++---
checkpolicy/policy_define.h | 2 +-
checkpolicy/policy_parse.y | 9 +++++++--
libsepol/cil/src/cil_build_ast.c | 32 +++++++++++++++++++++++++++---
libsepol/cil/src/cil_build_ast.h | 1 +
libsepol/cil/src/cil_internal.h | 4 ++--
libsepol/cil/src/cil_policy.c | 2 +-
libsepol/cil/src/cil_tree.c | 2 +-
libsepol/include/sepol/policydb/policydb.h | 7 +++++--
libsepol/src/policydb.c | 28 ++++++++++++++++++++------
libsepol/src/write.c | 25 ++++++++++++++++-------
policycoreutils/hll/pp/pp.c | 4 ++--
12 files changed, 92 insertions(+), 30 deletions(-)
diff --git a/checkpolicy/policy_define.c b/checkpolicy/policy_define.c
index a6c5d65..f4c6fba 100644
--- a/checkpolicy/policy_define.c
+++ b/checkpolicy/policy_define.c
@@ -3932,7 +3932,7 @@ bad:
return -1;
}
-int define_iomem_context(unsigned long low, unsigned long high)
+int define_iomem_context(uint64_t low, uint64_t high)
{
ocontext_t *newc, *c, *l, *head;
char *id;
@@ -3972,13 +3972,13 @@ int define_iomem_context(unsigned long low, unsigned
long high)
head = policydbp->ocontexts[OCON_XEN_IOMEM];
for (l = NULL, c = head; c; l = c, c = c->next) {
- uint32_t low2, high2;
+ uint64_t low2, high2;
low2 = c->u.iomem.low_iomem;
high2 = c->u.iomem.high_iomem;
if (low <= high2 && low2 <= high) {
yyerror2("iomemcon entry for 0x%lx-0x%lx overlaps with "
- "earlier entry 0x%x-0x%x", low, high,
+ "earlier entry 0x%lx-0x%lx", low, high,
low2, high2);
goto bad;
}
diff --git a/checkpolicy/policy_define.h b/checkpolicy/policy_define.h
index 4ef0f4f..14d30e1 100644
--- a/checkpolicy/policy_define.h
+++ b/checkpolicy/policy_define.h
@@ -46,7 +46,7 @@ int define_permissive(void);
int define_polcap(void);
int define_port_context(unsigned int low, unsigned int high);
int define_pirq_context(unsigned int pirq);
-int define_iomem_context(unsigned long low, unsigned long high);
+int define_iomem_context(uint64_t low, uint64_t high);
int define_ioport_context(unsigned long low, unsigned long high);
int define_pcidevice_context(unsigned long device);
int define_range_trans(int class_specified);
diff --git a/checkpolicy/policy_parse.y b/checkpolicy/policy_parse.y
index 15c8997..a489088 100644
--- a/checkpolicy/policy_parse.y
+++ b/checkpolicy/policy_parse.y
@@ -67,6 +67,7 @@ typedef int (* require_func_t)(int pass);
%union {
unsigned int val;
+ uint64_t val64;
uintptr_t valptr;
void *ptr;
require_func_t require_func;
@@ -78,6 +79,7 @@ typedef int (* require_func_t)(int pass);
%type <ptr> role_def roles
%type <valptr> cexpr cexpr_prim op role_mls_op
%type <val> ipv4_addr_def number
+%type <val64> number64
%type <require_func> require_decl_def
%token PATH
@@ -646,9 +648,9 @@ dev_context_def : pirq_context_def |
pirq_context_def : PIRQCON number security_context_def
{if (define_pirq_context($2)) return -1;}
;
-iomem_context_def : IOMEMCON number security_context_def
+iomem_context_def : IOMEMCON number64 security_context_def
{if (define_iomem_context($2,$2)) return -1;}
- | IOMEMCON number '-' number security_context_def
+ | IOMEMCON number64 '-' number64 security_context_def
{if (define_iomem_context($2,$4)) return -1;}
;
ioport_context_def : IOPORTCON number security_context_def
@@ -812,6 +814,9 @@ filename : FILENAME
number : NUMBER
{ $$ = strtoul(yytext,NULL,0); }
;
+number64 : NUMBER
+ { $$ = strtoull(yytext,NULL,0); }
+ ;
ipv6_addr : IPV6_ADDR
{ if (insert_id(yytext,0)) return -1; }
;
diff --git a/libsepol/cil/src/cil_build_ast.c b/libsepol/cil/src/cil_build_ast.c
index 419c20f..1949d2b 100644
--- a/libsepol/cil/src/cil_build_ast.c
+++ b/libsepol/cil/src/cil_build_ast.c
@@ -4319,12 +4319,12 @@ int cil_gen_iomemcon(__attribute__((unused)) struct
cil_db *db, struct cil_tree_
if (parse_current->next->cl_head != NULL) {
if (parse_current->next->cl_head->next != NULL &&
parse_current->next->cl_head->next->next == NULL) {
- rc = cil_fill_integer(parse_current->next->cl_head,
&iomemcon->iomem_low);
+ rc = cil_fill_integer64(parse_current->next->cl_head,
&iomemcon->iomem_low);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR, "Improper iomem specified\n");
goto exit;
}
- rc =
cil_fill_integer(parse_current->next->cl_head->next, &iomemcon->iomem_high);
+ rc =
cil_fill_integer64(parse_current->next->cl_head->next, &iomemcon->iomem_high);
if (rc != SEPOL_OK) {
cil_log(CIL_ERR, "Improper iomem specified\n");
goto exit;
@@ -4335,7 +4335,7 @@ int cil_gen_iomemcon(__attribute__((unused)) struct
cil_db *db, struct cil_tree_
goto exit;
}
} else {
- rc = cil_fill_integer(parse_current->next,
&iomemcon->iomem_low);;
+ rc = cil_fill_integer64(parse_current->next,
&iomemcon->iomem_low);;
if (rc != SEPOL_OK) {
cil_log(CIL_ERR, "Improper iomem specified\n");
goto exit;
@@ -5054,6 +5054,32 @@ exit:
return rc;
}
+int cil_fill_integer64(struct cil_tree_node *int_node, uint64_t *integer)
+{
+ int rc = SEPOL_ERR;
+ char *endptr = NULL;
+ uint64_t val;
+
+ if (int_node == NULL || integer == NULL) {
+ goto exit;
+ }
+
+ errno = 0;
+ val = strtoull(int_node->data, &endptr, 10);
+ if (errno != 0 || endptr == int_node->data || *endptr != '\0') {
+ rc = SEPOL_ERR;
+ goto exit;
+ }
+
+ *integer = val;
+
+ return SEPOL_OK;
+
+exit:
+ cil_log(CIL_ERR, "Failed to create integer from string\n");
+ return rc;
+}
+
int cil_fill_ipaddr(struct cil_tree_node *addr_node, struct cil_ipaddr *addr)
{
int rc = SEPOL_ERR;
diff --git a/libsepol/cil/src/cil_build_ast.h b/libsepol/cil/src/cil_build_ast.h
index 5b07c14..1bd33ce 100644
--- a/libsepol/cil/src/cil_build_ast.h
+++ b/libsepol/cil/src/cil_build_ast.h
@@ -211,6 +211,7 @@ int cil_fill_cats(struct cil_tree_node *curr, struct
cil_cats **cats);
void cil_destroy_cats(struct cil_cats *cats);
int cil_fill_context(struct cil_tree_node *user_node, struct cil_context
*context);
int cil_fill_integer(struct cil_tree_node *int_node, uint32_t *integer);
+int cil_fill_integer64(struct cil_tree_node *int_node, uint64_t *integer);
int cil_fill_ipaddr(struct cil_tree_node *addr_node, struct cil_ipaddr *addr);
int cil_fill_level(struct cil_tree_node *sens, struct cil_level *level);
diff --git a/libsepol/cil/src/cil_internal.h b/libsepol/cil/src/cil_internal.h
index cf0a8b1..11a2085 100644
--- a/libsepol/cil/src/cil_internal.h
+++ b/libsepol/cil/src/cil_internal.h
@@ -719,8 +719,8 @@ struct cil_pirqcon {
};
struct cil_iomemcon {
- uint32_t iomem_low;
- uint32_t iomem_high;
+ uint64_t iomem_low;
+ uint64_t iomem_high;
char *context_str;
struct cil_context *context;
};
diff --git a/libsepol/cil/src/cil_policy.c b/libsepol/cil/src/cil_policy.c
index ec38f69..7707a75 100644
--- a/libsepol/cil/src/cil_policy.c
+++ b/libsepol/cil/src/cil_policy.c
@@ -236,7 +236,7 @@ int cil_iomemcon_to_policy(FILE **file_arr, struct cil_sort
*sort)
for (i = 0; i < sort->count; i++) {
struct cil_iomemcon *iomemcon = (struct
cil_iomemcon*)sort->array[i];
- fprintf(file_arr[NETIFCONS], "iomemcon %d-%d ",
iomemcon->iomem_low, iomemcon->iomem_high);
+ fprintf(file_arr[NETIFCONS], "iomemcon %ld-%ld ",
iomemcon->iomem_low, iomemcon->iomem_high);
cil_context_to_policy(file_arr, NETIFCONS, iomemcon->context);
fprintf(file_arr[NETIFCONS], ";\n");
}
diff --git a/libsepol/cil/src/cil_tree.c b/libsepol/cil/src/cil_tree.c
index 4f9f480..5420af2 100644
--- a/libsepol/cil/src/cil_tree.c
+++ b/libsepol/cil/src/cil_tree.c
@@ -1392,7 +1392,7 @@ void cil_tree_print_node(struct cil_tree_node *node)
case CIL_IOMEMCON: {
struct cil_iomemcon *iomemcon = node->data;
- cil_log(CIL_INFO, "IOMEMCON ( %d %d )",
iomemcon->iomem_low, iomemcon->iomem_high);
+ cil_log(CIL_INFO, "IOMEMCON ( %ld %ld )",
iomemcon->iomem_low, iomemcon->iomem_high);
if (iomemcon->context != NULL) {
cil_tree_print_context(iomemcon->context);
} else {
diff --git a/libsepol/include/sepol/policydb/policydb.h
b/libsepol/include/sepol/policydb/policydb.h
index 6254fef..eaa87ef 100644
--- a/libsepol/include/sepol/policydb/policydb.h
+++ b/libsepol/include/sepol/policydb/policydb.h
@@ -325,8 +325,8 @@ typedef struct ocontext {
uint32_t device;
uint16_t pirq;
struct {
- uint32_t low_iomem;
- uint32_t high_iomem;
+ uint64_t low_iomem;
+ uint64_t high_iomem;
} iomem;
struct {
uint32_t low_ioport;
@@ -690,6 +690,9 @@ extern int policydb_set_target_platform(policydb_t *p, int
platform);
#define POLICYDB_VERSION_DEFAULT_TYPE 28
#define POLICYDB_VERSION_CONSTRAINT_NAMES 29
+#define POLICYDB_XEN_VERSION_BASE 24
+#define POLICYDB_XEN_VERSION_AARCH 25
+
/* Range of policy versions we understand*/
#define POLICYDB_VERSION_MIN POLICYDB_VERSION_BASE
#define POLICYDB_VERSION_MAX POLICYDB_VERSION_CONSTRAINT_NAMES
diff --git a/libsepol/src/policydb.c b/libsepol/src/policydb.c
index 667e98a..84d97ad 100644
--- a/libsepol/src/policydb.c
+++ b/libsepol/src/policydb.c
@@ -61,7 +61,14 @@ const char *policydb_target_strings[] = { POLICYDB_STRING,
POLICYDB_XEN_STRING }
static struct policydb_compat_info policydb_compat[] = {
{
.type = POLICY_KERN,
- .version = POLICYDB_VERSION_BOUNDARY,
+ .version = POLICYDB_XEN_VERSION_BASE,
+ .sym_num = SYM_NUM,
+ .ocon_num = OCON_XEN_PCIDEVICE + 1,
+ .target_platform = SEPOL_TARGET_XEN,
+ },
+ {
+ .type = POLICY_KERN,
+ .version = POLICYDB_XEN_VERSION_AARCH,
.sym_num = SYM_NUM,
.ocon_num = OCON_XEN_PCIDEVICE + 1,
.target_platform = SEPOL_TARGET_XEN,
@@ -2514,11 +2521,20 @@ static int ocontext_read_xen(struct
policydb_compat_info *info,
return -1;
break;
case OCON_XEN_IOMEM:
- rc = next_entry(buf, fp, sizeof(uint32_t) * 2);
- if (rc < 0)
- return -1;
- c->u.iomem.low_iomem = le32_to_cpu(buf[0]);
- c->u.iomem.high_iomem = le32_to_cpu(buf[1]);
+ if (p->policyvers >=
POLICYDB_XEN_VERSION_AARCH) {
+ uint64_t b64[2];
+ rc = next_entry(b64, fp,
sizeof(uint64_t) * 2);
+ if (rc < 0)
+ return -1;
+ c->u.iomem.low_iomem =
le64_to_cpu(b64[0]);
+ c->u.iomem.high_iomem =
le64_to_cpu(b64[1]);
+ } else {
+ rc = next_entry(buf, fp,
sizeof(uint32_t) * 2);
+ if (rc < 0)
+ return -1;
+ c->u.iomem.low_iomem =
le32_to_cpu(buf[0]);
+ c->u.iomem.high_iomem =
le32_to_cpu(buf[1]);
+ }
if (context_read_and_validate
(&c->context[0], p, fp))
return -1;
diff --git a/libsepol/src/write.c b/libsepol/src/write.c
index d03dc20..d98a5eb 100644
--- a/libsepol/src/write.c
+++ b/libsepol/src/write.c
@@ -1252,13 +1252,24 @@ static int ocontext_write_xen(struct
policydb_compat_info *info, policydb_t *p,
return POLICYDB_ERROR;
break;
case OCON_XEN_IOMEM:
- buf[0] = c->u.iomem.low_iomem;
- buf[1] = c->u.iomem.high_iomem;
- for (j = 0; j < 2; j++)
- buf[j] = cpu_to_le32(buf[j]);
- items = put_entry(buf, sizeof(uint32_t), 2, fp);
- if (items != 2)
- return POLICYDB_ERROR;
+ if (p->policyvers >=
POLICYDB_XEN_VERSION_AARCH) {
+ uint64_t b64[2];
+ b64[0] = c->u.iomem.low_iomem;
+ b64[1] = c->u.iomem.high_iomem;
+ for (j = 0; j < 2; j++)
+ b64[j] = cpu_to_le64(b64[j]);
+ items = put_entry(b64,
sizeof(uint64_t), 2, fp);
+ if (items != 2)
+ return POLICYDB_ERROR;
+ } else {
+ buf[0] = c->u.iomem.low_iomem;
+ buf[1] = c->u.iomem.high_iomem;
+ for (j = 0; j < 2; j++)
+ buf[j] = cpu_to_le32(buf[j]);
+ items = put_entry(buf,
sizeof(uint32_t), 2, fp);
+ if (items != 2)
+ return POLICYDB_ERROR;
+ }
if (context_write(p, &c->context[0], fp))
return POLICYDB_ERROR;
break;
diff --git a/policycoreutils/hll/pp/pp.c b/policycoreutils/hll/pp/pp.c
index b863346..60c493d 100644
--- a/policycoreutils/hll/pp/pp.c
+++ b/policycoreutils/hll/pp/pp.c
@@ -2695,8 +2695,8 @@ static int ocontext_xen_ioport_to_cil(struct policydb
*pdb, struct ocontext *iop
static int ocontext_xen_iomem_to_cil(struct policydb *pdb, struct ocontext
*iomems)
{
struct ocontext *iomem;
- uint32_t low;
- uint32_t high;
+ uint64_t low;
+ uint64_t high;
for (iomem = iomems; iomem != NULL; iomem = iomem->next) {
low = iomem->u.iomem.low_iomem;
--
2.1.0
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