libselinux/libselinux-rhat.patch

diff --git a/libselinux/man/man3/matchpathcon.3 b/libselinux/man/man3/matchpathcon.3
index cdbb252..0cc2268 100644
--- a/libselinux/man/man3/matchpathcon.3
+++ b/libselinux/man/man3/matchpathcon.3
@@ -8,7 +8,7 @@ matchpathcon, matchpathcon_index \- get the default SELinux security context for
 
 .BI "int matchpathcon_init(const char *" path ");"
 
-.BI "int matchpathcon_init_prefix(const char *" path ", const char *" subset ");"
+.BI "int matchpathcon_init_prefix(const char *" path ", const char *" prefix ");"
 
 .BI "int matchpathcon_fini(void);"
 .sp
@@ -48,7 +48,7 @@ is the same as
 but only loads entries with regular expressions that have stems prefixed
 by
 .I prefix.
-
+prefix can have multiple paths separated by ";", for example "/dev;/var/run;/tmp"
 .sp
 .B matchpathcon_fini
 frees the memory allocated by a prior call to
diff --git a/libselinux/man/man3/selabel_open.3 b/libselinux/man/man3/selabel_open.3
index 8674e37..23df23b 100644
--- a/libselinux/man/man3/selabel_open.3
+++ b/libselinux/man/man3/selabel_open.3
@@ -66,6 +66,13 @@ A non-null value for this option enables context validation.  By default,
 is used; a custom validation function can be provided via
 .BR selinux_set_callback (3).
 Note that an invalid context may not be treated as an error unless it is actually encountered during a lookup operation.
+.TP
+.B SELABEL_OPT_SUBSET
+A ";" separates string of path prefixes that tell the system to only loads entries with regular expressions that could match this strings. For example "/dev;/var/run;/tmp".  This option can cause the system to use less memory and work faster, but you should only use paths that begin with a prefix.
+.TP
+.B SELABEL_OPT_PATH
+A string representing an alternate path the the regular expressions.
+.sp
 
 .SH "BACKENDS"
 
@@ -99,4 +106,3 @@ Eamon Walsh <ewalsh@tycho.nsa.gov>
 .BR selabel_stats (3),
 .BR selinux_set_callback (3),
 .BR selinux (8)
-
diff --git a/libselinux/src/callbacks.c b/libselinux/src/callbacks.c
index b245364..7c47222 100644
--- a/libselinux/src/callbacks.c
+++ b/libselinux/src/callbacks.c
@@ -16,6 +16,7 @@ default_selinux_log(int type __attribute__((unused)), const char *fmt, ...)
 {
 	int rc;
 	va_list ap;
+	if (is_selinux_enabled() == 0) return 0;
 	va_start(ap, fmt);
 	rc = vfprintf(stderr, fmt, ap);
 	va_end(ap);
diff --git a/libselinux/src/label_file.c b/libselinux/src/label_file.c
index 3b8346d..ead3b0b 100644
--- a/libselinux/src/label_file.c
+++ b/libselinux/src/label_file.c
@@ -27,6 +27,7 @@
  * Internals, mostly moved over from matchpathcon.c
  */
 
+#define MAX_PREFIX 100
 /* A file security context specification. */
 typedef struct spec {
 	struct selabel_lookup_rec lr;	/* holds contexts for lookup result */
@@ -279,7 +280,7 @@ static int compile_regex(struct saved_data *data, spec_t *spec, char **errbuf)
 
 
 static int process_line(struct selabel_handle *rec,
-			const char *path, const char *prefix,
+			const char *path, const char **prefix_array,
 			char *line_buf, int pass, unsigned lineno)
 {
 	int items, len;
@@ -313,12 +314,24 @@ static int process_line(struct selabel_handle *rec,
 	}
 
 	len = get_stem_from_spec(regex);
-	if (len && prefix && strncmp(prefix, regex, len)) {
-		/* Stem of regex does not match requested prefix, discard. */
-		free(regex);
-		free(type);
-		free(context);
-		return 0;
+	if (len && prefix_array[0]) {
+		int i = 0;
+		int found = 0;
+		while (i < MAX_PREFIX && prefix_array[i]) {
+			if (strncmp(prefix_array[i], regex, len) == 0) {
+				found = 1;
+				break;
+			}
+			i++;
+		}
+
+		if (! found) {
+			/* Stem of regex does not match requested prefix, discard. */
+			free(regex);
+			free(type);
+			free(context);
+			return 0;
+		}
 	}
 
 	if (pass == 1) {
@@ -400,7 +413,7 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts,
 {
 	struct saved_data *data = (struct saved_data *)rec->data;
 	const char *path = NULL;
-	const char *prefix = NULL;
+	const char *prefix_array[MAX_PREFIX] = {NULL,};
 	FILE *fp;
 	FILE *localfp = NULL;
 	FILE *homedirfp = NULL;
@@ -421,8 +434,19 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts,
 			path = opts[n].value;
 			break;
 		case SELABEL_OPT_SUBSET:
-			prefix = opts[n].value;
+		{ 
+			char *ptr;
+			i = 0;
+			if (opts[n].value) {
+				prefix_array[i] = strtok_r((char *)opts[n].value, ";", &ptr);
+				while ((prefix_array[i] != NULL) && i < MAX_PREFIX - 1) {
+					i++;
+					prefix_array[i] = strtok_r(NULL, ";", &ptr);
+				}
+			}
+
 			break;
+		}
 		case SELABEL_OPT_BASEONLY:
 			baseonly = !!opts[n].value;
 			break;
@@ -481,7 +505,7 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts,
 		data->ncomp = 0;
 		while (getline(&line_buf, &line_len, fp) > 0
 		       && data->nspec < maxnspec) {
-			if (process_line(rec, path, prefix, line_buf,
+			if (process_line(rec, path, prefix_array, line_buf,
 					 pass, ++lineno) != 0)
 				goto finish;
 		}
@@ -495,7 +519,7 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts,
 			while (getline(&line_buf, &line_len, homedirfp) > 0
 			       && data->nspec < maxnspec) {
 				if (process_line
-				    (rec, homedir_path, prefix,
+				    (rec, homedir_path, prefix_array,
 				     line_buf, pass, ++lineno) != 0)
 					goto finish;
 			}
@@ -505,7 +529,7 @@ static int init(struct selabel_handle *rec, struct selinux_opt *opts,
 			while (getline(&line_buf, &line_len, localfp) > 0
 			       && data->nspec < maxnspec) {
 				if (process_line
-				    (rec, local_path, prefix, line_buf,
+				    (rec, local_path, prefix_array, line_buf,
 				     pass, ++lineno) != 0)
 					goto finish;
 			}
diff --git a/libselinux/src/matchpathcon.c b/libselinux/src/matchpathcon.c
index 9717b14..df83b30 100644
--- a/libselinux/src/matchpathcon.c
+++ b/libselinux/src/matchpathcon.c
@@ -2,6 +2,7 @@
 #include <string.h>
 #include <errno.h>
 #include <stdio.h>
+#include <syslog.h>
 #include "selinux_internal.h"
 #include "label_internal.h"
 #include "callbacks.h"
@@ -62,7 +63,7 @@ static void
 {
 	va_list ap;
 	va_start(ap, fmt);
-	vfprintf(stderr, fmt, ap);
+	vsyslog(LOG_ERR, fmt, ap);
 	va_end(ap);
 }
 
@@ -353,7 +354,7 @@ static int symlink_realpath(const char *name, char *resolved_path)
 
 	tmp_path = strdup(name);
 	if (!tmp_path) {
-		fprintf(stderr, "symlink_realpath(%s) strdup() failed: %s\n",
+		myprintf("symlink_realpath(%s) strdup() failed: %s\n",
 			name, strerror(errno));
 		rc = -1;
 		goto out;
@@ -374,21 +375,24 @@ static int symlink_realpath(const char *name, char *resolved_path)
 	}
 
 	if (!p) {
-		fprintf(stderr, "symlink_realpath(%s) realpath() failed: %s\n",
+		myprintf("symlink_realpath(%s) realpath() failed: %s\n",
 			name, strerror(errno));
 		rc = -1;
 		goto out;
 	}
 
 	len = strlen(p);
-	if (len + strlen(last_component) + 1 > PATH_MAX) {
-		fprintf(stderr, "symlink_realpath(%s) failed: Filename too long \n",
+	if (len + strlen(last_component) + 2 > PATH_MAX) {
+		myprintf("symlink_realpath(%s) failed: Filename too long \n",
 			name);
+		errno=ENAMETOOLONG;
 		rc = -1;
 		goto out;
 	}
 
 	resolved_path += len;
+	strcpy(resolved_path, "/");
+	resolved_path += 1;
 	strcpy(resolved_path, last_component);
 out:
 	free(tmp_path);
diff --git a/libselinux/utils/matchpathcon.c b/libselinux/utils/matchpathcon.c
index 2fa21bc..5f0a4c2 100644
--- a/libselinux/utils/matchpathcon.c
+++ b/libselinux/utils/matchpathcon.c
@@ -45,7 +45,7 @@ int printmatchpathcon(char *path, int header, int mode)
 
 int main(int argc, char **argv)
 {
-	int i, init = 0, rc = 0;
+	int i, init = 0;
 	int header = 1, opt;
 	int verify = 0;
 	int notrans = 0;