void-packages/srcpkgs/apparmor/patches/add-secure_getenv-scandirat.patch

Source: Alpine Linux
Upstream: Unknown
Reason: Fixes compilation with musl libc
---

diff --git a/libraries/libapparmor/configure.ac b/libraries/libapparmor/configure.ac
index 479ba6d..979ed91 100644
--- a/libraries/libapparmor/configure.ac
+++ b/libraries/libapparmor/configure.ac
@@ -81,7 +81,7 @@ AM_CONDITIONAL(HAVE_RUBY, test x$with_ruby = xyes)
 AC_HEADER_STDC
 AC_CHECK_HEADERS(unistd.h stdint.h syslog.h)
 
-AC_CHECK_FUNCS([asprintf __secure_getenv secure_getenv])
+AC_CHECK_FUNCS([asprintf __secure_getenv secure_getenv scandirat reallocarray])
 
 AM_PROG_CC_C_O
 AC_C_CONST
diff --git a/libraries/libapparmor/src/Makefile.am b/libraries/libapparmor/src/Makefile.am
index b9721fd..ed91a3c 100644
--- a/libraries/libapparmor/src/Makefile.am
+++ b/libraries/libapparmor/src/Makefile.am
@@ -46,9 +46,9 @@ af_protos.h: /usr/include/netinet/in.h
 	 LC_ALL=C  sed  -n -e "/IPPROTO_MAX/d"  -e "s/^\#define[ \\t]\\+IPPROTO_\\([A-Z0-9_]\\+\\)\\(.*\\)$$/AA_GEN_PROTO_ENT(\\UIPPROTO_\\1, \"\\L\\1\")/p" $< > $@
 
 lib_LTLIBRARIES = libapparmor.la
-noinst_HEADERS = grammar.h parser.h scanner.h af_protos.h private.h PMurHash.h
+noinst_HEADERS = grammar.h parser.h scanner.h af_protos.h secure_getenv.h scandirat.h private.h PMurHash.c
 
-libapparmor_la_SOURCES = grammar.y libaalogparse.c kernel.c scanner.c private.c features.c kernel_interface.c policy_cache.c PMurHash.c
+libapparmor_la_SOURCES = grammar.y libaalogparse.c kernel.c scanner.c secure_getenv.c scandirat.c private.c features.c kernel_interface.c policy_cache.c PMurHash.c
 libapparmor_la_LDFLAGS = -version-info $(AA_LIB_CURRENT):$(AA_LIB_REVISION):$(AA_LIB_AGE) -XCClinker -dynamic -pthread \
 	-Wl,--version-script=$(top_srcdir)/src/libapparmor.map
 
diff --git a/libraries/libapparmor/src/private.c b/libraries/libapparmor/src/private.c
index bece09d..dd0e815 100644
--- a/libraries/libapparmor/src/private.c
+++ b/libraries/libapparmor/src/private.c
@@ -39,10 +39,26 @@
  #ifdef HAVE___SECURE_GETENV
   #define secure_getenv __secure_getenv
  #else
-  #error neither secure_getenv nor __secure_getenv is available
+  #include "secure_getenv.h"
  #endif
 #endif
 
+#ifndef HAVE_SCANDIRAT
+#include "scandirat.h"
+#endif
+
+
+/*
+ * Allow libapparmor to build on older glibcs and other libcs that do
+ * not support reallocarray.
+ */
+#ifndef HAVE_REALLOCARRY
+void *reallocarray(void *ptr, size_t nmemb, size_t size)
+{
+	return realloc(ptr, nmemb * size);
+}
+#endif
+
 struct ignored_suffix_t {
 	const char * text;
 	int len;
diff --git a/libraries/libapparmor/src/scandirat.c b/libraries/libapparmor/src/scandirat.c
new file mode 100644
index 0000000..c293014
--- /dev/null
+++ b/libraries/libapparmor/src/scandirat.c
@@ -0,0 +1,62 @@
+#include <dirent.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <errno.h>
+
+#include "scandirat.h"
+
+#ifndef HAVE_SCANDIRAT
+
+int scandirat(int dir_fd, const char *dirp, struct dirent ***namelist,
+	int (*filter)(const struct dirent *),
+	int (*compar)(const struct dirent **, const struct dirent **))
+{
+	int fd;
+	DIR *d;
+	struct dirent *de, **names=0, **tmp;
+	size_t cnt=0, len=0;
+	int old_errno = errno;
+
+
+	fd = openat(dir_fd, dirp, O_RDONLY|O_CLOEXEC);
+	if (fd == -1) return -1;
+
+	d = fdopendir(fd);
+
+	if (!d) {
+		close(fd);
+		return -1;
+	}
+
+	while ((errno=0), (de = readdir(d))) {
+		if (filter && !filter(de)) continue;
+		if (cnt >= len) {
+			len = 2*len+1;
+			if (len > SIZE_MAX/sizeof *names) break;
+			tmp = realloc(names, len * sizeof *names);
+			if (!tmp) break;
+			names = tmp;
+		}
+		names[cnt] = malloc(de->d_reclen);
+		if (!names[cnt]) break;
+		memcpy(names[cnt++], de, de->d_reclen);
+	}
+
+	closedir(d);
+
+	if (errno) {
+		if (names) while (cnt-->0) free(names[cnt]);
+		free(names);
+		return -1;
+	}
+	errno = old_errno;
+
+	if (compar) qsort(names, cnt, sizeof *names, (int (*)(const void *, const void *))compar);
+	*namelist = names;
+	return cnt;
+}
+
+#endif
diff --git a/libraries/libapparmor/src/scandirat.h b/libraries/libapparmor/src/scandirat.h
new file mode 100644
index 0000000..a1c5dfe
--- /dev/null
+++ b/libraries/libapparmor/src/scandirat.h
@@ -0,0 +1,12 @@
+#ifndef LIBAPPARMOR_SCANDIRAT_H
+#define LIBAPPARMOR_SCANDIRAT_H
+
+#include <dirent.h>
+
+#ifndef HAVE_SCANDIRAT
+int scandirat(int dir_fd, const char *dirp, struct dirent ***namelist,
+	int (*filter)(const struct dirent *),
+	int (*compar)(const struct dirent **, const struct dirent **));
+#endif
+
+#endif
diff --git a/libraries/libapparmor/src/secure_getenv.c b/libraries/libapparmor/src/secure_getenv.c
new file mode 100644
index 0000000..f6894cd
--- /dev/null
+++ b/libraries/libapparmor/src/secure_getenv.c
@@ -0,0 +1,14 @@
+#include <stdlib.h>
+#include <sys/auxv.h>
+
+#include "secure_getenv.h"
+
+#ifndef HAVE_SECURE_GETENV
+char *secure_getenv(const char *name)
+{
+	if (!getauxval(AT_SECURE)) {
+		return getenv(name);
+	}
+	return NULL;
+}
+#endif
diff --git a/libraries/libapparmor/src/secure_getenv.h b/libraries/libapparmor/src/secure_getenv.h
new file mode 100644
index 0000000..b6269a8
--- /dev/null
+++ b/libraries/libapparmor/src/secure_getenv.h
@@ -0,0 +1,8 @@
+#ifndef LIBAPPARMOR_SECURE_GETENV_H
+#define LIBAPPARMOR_SECURE_GETENV_H
+
+#ifndef HAVE_SECURE_GETENV
+char *secure_getenv(const char *name);
+#endif
+
+#endif