Merge tag 'disintegrate-mtd-20121009' of git://git.infradead.org/users/dhowells/linux-headers

UAPI Disintegration 2012-10-09

Conflicts:
	MAINTAINERS
	arch/arm/configs/bcmring_defconfig
	arch/arm/mach-imx/clk-imx51-imx53.c
	drivers/mtd/nand/Kconfig
	drivers/mtd/nand/bcm_umi_nand.c
	drivers/mtd/nand/nand_bcm_umi.h
	drivers/mtd/nand/orion_nand.c

5 files changed, 29 insertions, 60 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 6c77f63c7591..651d8456611a 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -2088,15 +2088,19 @@ static int selinux_bprm_secureexec(struct linux_binprm *bprm)
 	return (atsecure || cap_bprm_secureexec(bprm));
 }
 
+static int match_file(const void *p, struct file *file, unsigned fd)
+{
+	return file_has_perm(p, file, file_to_av(file)) ? fd + 1 : 0;
+}
+
 /* Derived from fs/exec.c:flush_old_files. */
 static inline void flush_unauthorized_files(const struct cred *cred,
 					    struct files_struct *files)
 {
 	struct file *file, *devnull = NULL;
 	struct tty_struct *tty;
-	struct fdtable *fdt;
-	long j = -1;
 	int drop_tty = 0;
+	unsigned n;
 
 	tty = get_current_tty();
 	if (tty) {
@@ -2123,58 +2127,23 @@ static inline void flush_unauthorized_files(const struct cred *cred,
 		no_tty();
 
 	/* Revalidate access to inherited open files. */
-	spin_lock(&files->file_lock);
-	for (;;) {
-		unsigned long set, i;
-		int fd;
-
-		j++;
-		i = j * BITS_PER_LONG;
-		fdt = files_fdtable(files);
-		if (i >= fdt->max_fds)
-			break;
-		set = fdt->open_fds[j];
-		if (!set)
-			continue;
-		spin_unlock(&files->file_lock);
-		for ( ; set ; i++, set >>= 1) {
-			if (set & 1) {
-				file = fget(i);
-				if (!file)
-					continue;
-				if (file_has_perm(cred,
-						  file,
-						  file_to_av(file))) {
-					sys_close(i);
-					fd = get_unused_fd();
-					if (fd != i) {
-						if (fd >= 0)
-							put_unused_fd(fd);
-						fput(file);
-						continue;
-					}
-					if (devnull) {
-						get_file(devnull);
-					} else {
-						devnull = dentry_open(
-							&selinux_null,
-							O_RDWR, cred);
-						if (IS_ERR(devnull)) {
-							devnull = NULL;
-							put_unused_fd(fd);
-							fput(file);
-							continue;
-						}
-					}
-					fd_install(fd, devnull);
-				}
-				fput(file);
-			}
-		}
-		spin_lock(&files->file_lock);
+	n = iterate_fd(files, 0, match_file, cred);
+	if (!n) /* none found? */
+		return;
 
+	devnull = dentry_open(&selinux_null, O_RDWR, cred);
+	if (!IS_ERR(devnull)) {
+		/* replace all the matching ones with this */
+		do {
+			replace_fd(n - 1, get_file(devnull), 0);
+		} while ((n = iterate_fd(files, n, match_file, cred)) != 0);
+		fput(devnull);
+	} else {
+		/* just close all the matching ones */
+		do {
+			replace_fd(n - 1, NULL, 0);
+		} while ((n = iterate_fd(files, n, match_file, cred)) != 0);
 	}
-	spin_unlock(&files->file_lock);
 }
 
 /*
diff --git a/security/selinux/include/xfrm.h b/security/selinux/include/xfrm.h
index c220f314709c..65f67cb0aefb 100644
--- a/security/selinux/include/xfrm.h
+++ b/security/selinux/include/xfrm.h
@@ -51,6 +51,7 @@ int selinux_xfrm_decode_session(struct sk_buff *skb, u32 *sid, int ckall);
 static inline void selinux_xfrm_notify_policyload(void)
 {
 	atomic_inc(&flow_cache_genid);
+	rt_genid_bump(&init_net);
 }
 #else
 static inline int selinux_xfrm_enabled(void)
diff --git a/security/selinux/netlink.c b/security/selinux/netlink.c
index 8a77725423e0..14d810ead420 100644
--- a/security/selinux/netlink.c
+++ b/security/selinux/netlink.c
@@ -113,13 +113,12 @@ static int __init selnl_init(void)
 {
 	struct netlink_kernel_cfg cfg = {
 		.groups	= SELNLGRP_MAX,
+		.flags	= NL_CFG_F_NONROOT_RECV,
 	};
 
-	selnl = netlink_kernel_create(&init_net, NETLINK_SELINUX,
-				      THIS_MODULE, &cfg);
+	selnl = netlink_kernel_create(&init_net, NETLINK_SELINUX, &cfg);
 	if (selnl == NULL)
 		panic("SELinux:  Cannot create netlink socket.");
-	netlink_set_nonroot(NETLINK_SELINUX, NL_NONROOT_RECV);
 	return 0;
 }
 
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 298e695d6822..3a6e8731646c 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -174,7 +174,7 @@ static ssize_t sel_write_enforce(struct file *file, const char __user *buf,
 		audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS,
 			"enforcing=%d old_enforcing=%d auid=%u ses=%u",
 			new_value, selinux_enforcing,
-			audit_get_loginuid(current),
+			from_kuid(&init_user_ns, audit_get_loginuid(current)),
 			audit_get_sessionid(current));
 		selinux_enforcing = new_value;
 		if (selinux_enforcing)
@@ -305,7 +305,7 @@ static ssize_t sel_write_disable(struct file *file, const char __user *buf,
 			goto out;
 		audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_STATUS,
 			"selinux=0 auid=%u ses=%u",
-			audit_get_loginuid(current),
+			from_kuid(&init_user_ns, audit_get_loginuid(current)),
 			audit_get_sessionid(current));
 	}
 
@@ -485,7 +485,7 @@ static int sel_mmap_policy(struct file *filp, struct vm_area_struct *vma)
 			return -EACCES;
 	}
 
-	vma->vm_flags |= VM_RESERVED;
+	vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
 	vma->vm_ops = &sel_mmap_policy_ops;
 
 	return 0;
@@ -551,7 +551,7 @@ static ssize_t sel_write_load(struct file *file, const char __user *buf,
 out1:
 	audit_log(current->audit_context, GFP_KERNEL, AUDIT_MAC_POLICY_LOAD,
 		"policy loaded auid=%u ses=%u",
-		audit_get_loginuid(current),
+		from_kuid(&init_user_ns, audit_get_loginuid(current)),
 		audit_get_sessionid(current));
 out:
 	mutex_unlock(&sel_mutex);
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 4321b8fc8863..b4feecc3fe01 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -2440,7 +2440,7 @@ int security_set_bools(int len, int *values)
 				sym_name(&policydb, SYM_BOOLS, i),
 				!!values[i],
 				policydb.bool_val_to_struct[i]->state,
-				audit_get_loginuid(current),
+				from_kuid(&init_user_ns, audit_get_loginuid(current)),
 				audit_get_sessionid(current));
 		}
 		if (values[i])