| Main Archive Page > Month Archives > selinux archives |
Re: [PATCH 2/3] checkpolicy: Add support for multiple target OSes
From: Paul Nuzzi <pjnuzzi_at_nospam>Date: Tue Sep 29 2009 - 14:06:26 GMT
To: selinux@tycho.nsa.gov
Updated patch of checkpolicy based on input.
On Tue, 2009-09-15 at 12:37 -0400, pjnuzzi wrote: > Add support for multiple target OSes by adding the -t target option to > checkpolicy. Implemented the new Xen ocontext identifiers pirqcon, > pcidevicecon, iomemcon and ioportcon. > > Signed-off-by: Paul Nuzzi <pjnuzzi@tycho.ncsc.mil> > > ---
checkpolicy/checkpolicy.c | 20 ++-
checkpolicy/policy_define.c | 272
++++++++++++++++++++++++++++++++++++++++++++
checkpolicy/policy_define.h | 4
checkpolicy/policy_parse.y | 29 ++++
checkpolicy/policy_scan.l | 10 +
5 files changed, 330 insertions(+), 5 deletions(-)
diff --git a/checkpolicy/checkpolicy.c b/checkpolicy/checkpolicy.c
index d7772d5..76d8ed3 100644
--- a/checkpolicy/checkpolicy.c
+++ b/checkpolicy/checkpolicy.c
@@ -100,7 +100,9 @@ unsigned int policyvers = POLICYDB_VERSION_MAX;
void usage(char *progname)
{
printf
- ("usage: %s [-b] [-d] [-U handle_unknown (allow,deny,reject) [-M] [-c policyvers (%d-%d)] [-o output_file] [input_file]\n",
+ ("usage: %s [-b] [-d] [-U handle_unknown (allow,deny,reject) [-M]"
+ "[-c policyvers (%d-%d)] [-o output_file] [-t platform]"
+ "[input_file]\n",
progname, POLICYDB_VERSION_MIN, POLICYDB_VERSION_MAX);
exit(1);
}
@@ -381,7 +383,7 @@ int main(int argc, char **argv)
unsigned int protocol, port;
unsigned int binary = 0, debug = 0;
struct val_to_name v;
- int ret, ch, fd;
+ int ret, ch, fd, target = SEPOL_TARGET_SELINUX;
unsigned int nel, uret;
struct stat sb;
void *map;
@@ -391,11 +393,22 @@ int main(int argc, char **argv)
int show_version = 0;
struct policy_file pf;
- while ((ch = getopt(argc, argv, "o:dbU:MVc:")) != EOF) {
+ while ((ch = getopt(argc, argv, "o:t:dbU:MVc:")) != EOF) {
switch (ch) {
case 'o':
outfile = optarg;
break;
+ case 't':
+ if (!strcasecmp(optarg, "Xen"))
+ target = SEPOL_TARGET_XEN;
+ else if (!strcasecmp(optarg, "SELinux"))
+ target = SEPOL_TARGET_SELINUX;
+ else{
+ fprintf(stderr, "%s: Unknown target platform:"
+ "%s\n", argv[0], optarg);
+ exit(1);
+ }
+ break;
case 'b':
binary = 1;
file = binfile;
@@ -528,6 +541,7 @@ int main(int argc, char **argv)
exit(1);
/* We build this as a base policy first since that is all the parser understands */
parse_policy.policy_type = POLICY_BASE;
+ policydb_set_target_platform(&parse_policy, target);
/* Let sepol know if we are dealing with MLS support */
parse_policy.mls = mlspol;
diff --git a/checkpolicy/policy_define.c b/checkpolicy/policy_define.c
index 17b84ce..a064307 100644
--- a/checkpolicy/policy_define.c
+++ b/checkpolicy/policy_define.c
@@ -3320,6 +3320,11 @@ int define_fs_context(unsigned int major, unsigned int minor)
{
ocontext_t *newc, *c, *head;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("fscon not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
parse_security_context(NULL);
parse_security_context(NULL);
@@ -3372,12 +3377,254 @@ int define_fs_context(unsigned int major, unsigned int minor)
return 0;
}
+int define_pirq_context(unsigned int pirq)
+{
+ ocontext_t *newc, *c, *l, *head;
+ char *id;
+
+ if (policydbp->target_platform != SEPOL_TARGET_XEN) {
+ yyerror("pirqcon not supported for target");
+ return -1;
+ }
+
+ if (pass == 1) {
+ id = (char *) queue_remove(id_queue);
+ free(id);
+ parse_security_context(NULL);
+ return 0;
+ }
+
+ newc = malloc(sizeof(ocontext_t));
+ if (!newc) {
+ yyerror("out of memory");
+ return -1;
+ }
+ memset(newc, 0, sizeof(ocontext_t));
+
+ newc->u.pirq = pirq;
+
+ if (parse_security_context(&newc->context[0])) {
+ free(newc);
+ return -1;
+ }
+
+ head = policydbp->ocontexts[OCON_XEN_PIRQ];
+ for (l = NULL, c = head; c; l = c, c = c->next) {
+ unsigned int pirq2;
+
+ pirq2 = c->u.pirq;
+ if (pirq == pirq2) {
+ yyerror2("duplicate pirqcon entry for %d ", pirq);
+ goto bad;
+ }
+ }
+
+ if (l)
+ l->next = newc;
+ else
+ policydbp->ocontexts[OCON_XEN_PIRQ] = newc;
+
+ return 0;
+
+bad:
+ free(newc);
+ return -1;
+}
+
+int define_iomem_context(unsigned long low, unsigned long high)
+{
+ ocontext_t *newc, *c, *l, *head;
+ char *id;
+
+ if (policydbp->target_platform != SEPOL_TARGET_XEN) {
+ yyerror("iomemcon not supported for target");
+ return -1;
+ }
+
+ if (pass == 1) {
+ id = (char *)queue_remove(id_queue);
+ free(id);
+ parse_security_context(NULL);
+ return 0;
+ }
+
+ newc = malloc(sizeof(ocontext_t));
+ if (!newc) {
+ yyerror("out of memory");
+ return -1;
+ }
+ memset(newc, 0, sizeof(ocontext_t));
+
+ newc->u.iomem.low_iomem = low;
+ newc->u.iomem.high_iomem = high;
+
+ if (low > high) {
+ yyerror2("low memory 0x%x exceeds high memory 0x%x", low, high);
+ free(newc);
+ return -1;
+ }
+
+ if (parse_security_context(&newc->context[0])) {
+ free(newc);
+ return -1;
+ }
+
+ head = policydbp->ocontexts[OCON_XEN_IOMEM];
+ for (l = NULL, c = head; c; l = c, c = c->next) {
+ unsigned int low2, high2;
+
+ low2 = c->u.iomem.low_iomem;
+ high2 = c->u.iomem.high_iomem;
+ if (low <= high2 && low2 <= high) {
+ yyerror2("iomemcon entry for 0x%x-0x%x overlaps with "
+ "earlier entry 0x%x-0x%x", low, high,
+ low2, high2);
+ goto bad;
+ }
+ }
+
+ if (l)
+ l->next = newc;
+ else
+ policydbp->ocontexts[OCON_XEN_IOMEM] = newc;
+
+ return 0;
+
+bad:
+ free(newc);
+ return -1;
+}
+
+int define_ioport_context(unsigned long low, unsigned long high)
+{
+ ocontext_t *newc, *c, *l, *head;
+ char *id;
+
+ if (policydbp->target_platform != SEPOL_TARGET_XEN) {
+ yyerror("ioportcon not supported for target");
+ return -1;
+ }
+
+ if (pass == 1) {
+ id = (char *)queue_remove(id_queue);
+ free(id);
+ parse_security_context(NULL);
+ return 0;
+ }
+
+ newc = malloc(sizeof(ocontext_t));
+ if (!newc) {
+ yyerror("out of memory");
+ return -1;
+ }
+ memset(newc, 0, sizeof(ocontext_t));
+
+ newc->u.ioport.low_ioport = low;
+ newc->u.ioport.high_ioport = high;
+
+ if (low > high) {
+ yyerror2("low ioport 0x%x exceeds high ioport 0x%x", low, high);
+ free(newc);
+ return -1;
+ }
+
+ if (parse_security_context(&newc->context[0])) {
+ free(newc);
+ return -1;
+ }
+
+ head = policydbp->ocontexts[OCON_XEN_IOPORT];
+ for (l = NULL, c = head; c; l = c, c = c->next) {
+ unsigned int low2, high2;
+
+ low2 = c->u.ioport.low_ioport;
+ high2 = c->u.ioport.high_ioport;
+ if (low <= high2 && low2 <= high) {
+ yyerror2("ioportcon entry for 0x%x-0x%x overlaps with"
+ "earlier entry 0x%x-0x%x", low, high,
+ low2, high2);
+ goto bad;
+ }
+ }
+
+ if (l)
+ l->next = newc;
+ else
+ policydbp->ocontexts[OCON_XEN_IOPORT] = newc;
+
+ return 0;
+
+bad:
+ free(newc);
+ return -1;
+}
+
+int define_pcidevice_context(unsigned long device)
+{
+ ocontext_t *newc, *c, *l, *head;
+ char *id;
+
+ if (policydbp->target_platform != SEPOL_TARGET_XEN) {
+ yyerror("pcidevicecon not supported for target");
+ return -1;
+ }
+
+ if (pass == 1) {
+ id = (char *) queue_remove(id_queue);
+ free(id);
+ parse_security_context(NULL);
+ return 0;
+ }
+
+ newc = malloc(sizeof(ocontext_t));
+ if (!newc) {
+ yyerror("out of memory");
+ return -1;
+ }
+ memset(newc, 0, sizeof(ocontext_t));
+
+ newc->u.device = device;
+
+ if (parse_security_context(&newc->context[0])) {
+ free(newc);
+ return -1;
+ }
+
+ head = policydbp->ocontexts[OCON_XEN_PCIDEVICE];
+ for (l = NULL, c = head; c; l = c, c = c->next) {
+ unsigned int device2;
+
+ device2 = c->u.device;
+ if (device == device2) {
+ yyerror2("duplicate pcidevicecon entry for 0x%x ",
+ device);
+ goto bad;
+ }
+ }
+
+ if (l)
+ l->next = newc;
+ else
+ policydbp->ocontexts[OCON_XEN_PCIDEVICE] = newc;
+
+ return 0;
+
+bad:
+ free(newc);
+ return -1;
+}
+
int define_port_context(unsigned int low, unsigned int high)
{
ocontext_t *newc, *c, *l, *head;
unsigned int protocol;
char *id;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("portcon not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
id = (char *)queue_remove(id_queue);
free(id);
@@ -3460,6 +3707,11 @@ int define_netif_context(void)
{
ocontext_t *newc, *c, *head;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("netifcon not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
free(queue_remove(id_queue));
parse_security_context(NULL);
@@ -3516,6 +3768,11 @@ int define_ipv4_node_context()
struct in_addr addr, mask;
ocontext_t *newc, *c, *l, *head;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("nodecon not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
free(queue_remove(id_queue));
free(queue_remove(id_queue));
@@ -3597,6 +3854,11 @@ int define_ipv6_node_context(void)
struct in6_addr addr, mask;
ocontext_t *newc, *c, *l, *head;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("nodecon not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
free(queue_remove(id_queue));
free(queue_remove(id_queue));
@@ -3677,6 +3939,11 @@ int define_fs_use(int behavior)
{
ocontext_t *newc, *c, *head;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("fsuse not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
free(queue_remove(id_queue));
parse_security_context(NULL);
@@ -3727,6 +3994,11 @@ int define_genfs_context_helper(char *fstype, int has_type)
char *type = NULL;
int len, len2;
+ if (policydbp->target_platform != SEPOL_TARGET_SELINUX) {
+ yyerror("genfs not supported for target");
+ return -1;
+ }
+
if (pass == 1) {
free(fstype);
free(queue_remove(id_queue));
diff --git a/checkpolicy/policy_define.h b/checkpolicy/policy_define.h
index b5a972e..5ac6667 100644
--- a/checkpolicy/policy_define.h
+++ b/checkpolicy/policy_define.h
@@ -39,6 +39,10 @@ int define_netif_context(void);
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_ioport_context(unsigned long low, unsigned long high);
+int define_pcidevice_context(unsigned long device);
int define_range_trans(int class_specified);
int define_role_allow(void);
int define_role_trans(void);
diff --git a/checkpolicy/policy_parse.y b/checkpolicy/policy_parse.y
index 5ca7101..8d1bc37 100644
--- a/checkpolicy/policy_parse.y
+++ b/checkpolicy/policy_parse.y
@@ -123,6 +123,7 @@ typedef int (* require_func_t)();
%token TARGET
%token SAMEUSER
%token FSCON PORTCON NETIFCON NODECON
+%token PIRQCON IOMEMCON IOPORTCON PCIDEVICECON
%token FSUSEXATTR FSUSETASK FSUSETRANS
%token GENFSCON
%token U1 U2 U3 R1 R2 R3 T1 T2 T3 L1 L2 H1 H2
@@ -154,7 +155,7 @@ base_policy : { if (define_policy(pass, 0) == -1) return -1; }
opt_mls te_rbac users opt_constraints
{ if (pass == 1) { if (policydb_index_bools(policydbp)) return -1;}
else if (pass == 2) { if (policydb_index_others(NULL, policydbp, 0)) return -1;}}
- initial_sid_contexts opt_fs_contexts opt_fs_uses opt_genfs_contexts net_contexts
+ initial_sid_contexts opt_fs_contexts opt_fs_uses opt_genfs_contexts net_contexts opt_dev_contexts
;
classes : class_def
| classes class_def
@@ -562,6 +563,32 @@ initial_sid_contexts : initial_sid_context_def
initial_sid_context_def : SID identifier security_context_def
{if (define_initial_sid_context()) return -1;}
;
+opt_dev_contexts : dev_contexts |
+ ;
+dev_contexts : dev_context_def
+ | dev_contexts dev_context_def
+ ;
+dev_context_def : pirq_context_def |
+ iomem_context_def |
+ ioport_context_def |
+ pci_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
+ {if (define_iomem_context($2,$2)) return -1;}
+ | IOMEMCON number '-' number security_context_def
+ {if (define_iomem_context($2,$4)) return -1;}
+ ;
+ioport_context_def : IOPORTCON number security_context_def
+ {if (define_ioport_context($2,$2)) return -1;}
+ | IOPORTCON number '-' number security_context_def
+ {if (define_ioport_context($2,$4)) return -1;}
+ ;
+pci_context_def : PCIDEVICECON number security_context_def
+ {if (define_pcidevice_context($2)) return -1;}
+ ;
opt_fs_contexts : fs_contexts
|
;
diff --git a/checkpolicy/policy_scan.l b/checkpolicy/policy_scan.l
index b55c659..48128a8 100644
--- a/checkpolicy/policy_scan.l
+++ b/checkpolicy/policy_scan.l
@@ -169,6 +169,14 @@ netifcon |
NETIFCON { return(NETIFCON);}
nodecon |
NODECON { return(NODECON);}
+pirqcon |
+PIRQCON { return(PIRQCON);}
+iomemcon |
+IOMEMCON { return(IOMEMCON);}
+ioportcon |
+IOPORTCON { return(IOPORTCON);}
+pcidevicecon |
+PCIDEVICECON { return(PCIDEVICECON);}
fs_use_xattr |
FS_USE_XATTR { return(FSUSEXATTR);}
fs_use_task |
@@ -209,7 +217,7 @@ permissive |
PERMISSIVE { return(PERMISSIVE); }
"/"({alnum}|[_\.\-/])* { return(PATH); }
{letter}({alnum}|[_\-])*([\.]?({alnum}|[_\-]))* { return(IDENTIFIER); }
-{digit}+ { return(NUMBER); }
+{digit}+|0x{hexval}+ { return(NUMBER); }
{digit}{1,3}(\.{digit}{1,3}){3} { return(IPV4_ADDR); }
{hexval}{0,4}":"{hexval}{0,4}":"({hexval}|[:.])* { return(IPV6_ADDR); }
{digit}+(\.({alnum}|[_.])*)? { return(VERSION_IDENTIFIER); }
--
This message was distributed to subscribers of the selinux mailing list.
If you no longer wish to subscribe, send mail to majordomo@tycho.nsa.gov with
the words "unsubscribe selinux" without quotes as the message.