[PATCH] Add restorecon -x opt to not cross FS boundaries (cf github #208)

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Folks, this patch adds and documents a "-x" option for restorecon
to prevent it from crossing file system boundaries, as requested
in github issue #208.

P

Signed-off-by: Peter Whittaker <pww@xxxxxxxxxxxx>
---
 policycoreutils/setfiles/restorecon.8 |  7 +++++++
 policycoreutils/setfiles/setfiles.c   | 11 +++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/policycoreutils/setfiles/restorecon.8 b/policycoreutils/setfiles/restorecon.8
index bbfc83fe..0d1930de 100644
--- a/policycoreutils/setfiles/restorecon.8
+++ b/policycoreutils/setfiles/restorecon.8
@@ -13,6 +13,7 @@ restorecon \- restore file(s) default SELinux security contexts.
 .RB [ \-F ]
 .RB [ \-W ]
 .RB [ \-I | \-D ]
+.RB [ \-x ]
 .RB [ \-e
 .IR directory ]
 .IR pathname \ ...
@@ -31,6 +32,7 @@ restorecon \- restore file(s) default SELinux security contexts.
 .RB [ \-F ]
 .RB [ \-W ]
 .RB [ \-I | \-D ]
+.RB [ \-x ]
 
 .SH "DESCRIPTION"
 This manual page describes the
@@ -153,6 +155,11 @@ option of GNU
 .B find
 produces input suitable for this mode.
 .TP
+.B \-x
+prevent
+.B restorecon
+from crossing file system boundaries.
+.TP
 .SH "ARGUMENTS"
 .IR pathname \ ...
 The pathname for the file(s) to be relabeled.
diff --git a/policycoreutils/setfiles/setfiles.c b/policycoreutils/setfiles/setfiles.c
index 16bd592c..afd579e3 100644
--- a/policycoreutils/setfiles/setfiles.c
+++ b/policycoreutils/setfiles/setfiles.c
@@ -43,8 +43,8 @@ static __attribute__((__noreturn__)) void usage(const char *const name)
 {
 	if (iamrestorecon) {
 		fprintf(stderr,
-			"usage:  %s [-iIDFmnprRv0] [-e excludedir] pathname...\n"
-			"usage:  %s [-iIDFmnprRv0] [-e excludedir] -f filename\n",
+			"usage:  %s [-iIDFmnprRv0x] [-e excludedir] pathname...\n"
+			"usage:  %s [-iIDFmnprRv0x] [-e excludedir] -f filename\n",
 			name, name);
 	} else {
 		fprintf(stderr,
@@ -386,6 +386,13 @@ int main(int argc, char **argv)
 		case '0':
 			null_terminated = 1;
 			break;
+                case 'x':
+                        if (iamrestorecon) {
+				r_opts.xdev = SELINUX_RESTORECON_XDEV;
+                        } else {
+				usage(argv[0]);
+                        }
+                        break;
 		case 'h':
 		case '?':
 			usage(argv[0]);
-- 
2.20.1




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