[PATCH v2] get/setcifsacl: fix bad bit-shifts

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



A Coverity scan turned up this warning:

1. cifs-utils-6.2/setcifsacl.c:578:result_independent_of_operands – "(x & 0xff0000000000ULL) >> 48" is 0 regardless of the values of its operands. This occurs as the operand of assignment.

...which is entirely true. That shift should be 40 bits, not 48. Also
fix a similar bug in getcifsacl.c.

Signed-off-by: Jeff Layton <jlayton@xxxxxxxxx>
---
 getcifsacl.c | 2 +-
 setcifsacl.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/getcifsacl.c b/getcifsacl.c
index b8998ef..33f36b4 100644
--- a/getcifsacl.c
+++ b/getcifsacl.c
@@ -198,7 +198,7 @@ print_sid_raw:
 	id_auth_val += (unsigned long long)csid->authority[3] << 16;
 	id_auth_val += (unsigned long long)csid->authority[2] << 24;
 	id_auth_val += (unsigned long long)csid->authority[1] << 32;
-	id_auth_val += (unsigned long long)csid->authority[0] << 48;
+	id_auth_val += (unsigned long long)csid->authority[0] << 40;
 
 	/*
 	 * MS-DTYP states that if the authority is >= 2^32, then it should be
diff --git a/setcifsacl.c b/setcifsacl.c
index ce708eb..7eeeaa6 100644
--- a/setcifsacl.c
+++ b/setcifsacl.c
@@ -575,7 +575,7 @@ raw_str_to_sid(const char *str, struct cifs_sid *csid)
 	csid->authority[3] = (x & 0x000000ff0000ULL) >> 16;
 	csid->authority[2] = (x & 0x0000ff000000ULL) >> 24;
 	csid->authority[1] = (x & 0x00ff00000000ULL) >> 32;
-	csid->authority[0] = (x & 0xff0000000000ULL) >> 48;
+	csid->authority[0] = (x & 0xff0000000000ULL) >> 40;
 
 	/* now read the the subauthorities and store as __le32 vals */
 	p = q + 1;
-- 
1.8.3.1

--
To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux