When building with clang, multiple noreturn issues arise,
for instance:
selabel_partial_match.c:11:1: error: function 'usage' could be declared with attribute 'noreturn' [-Werror,-Wmissing-noreturn]
Fix these.
Signed-off-by: William Roberts <william.c.roberts@intel.com>
We use the same lookup function for service contexts
that we use for property contexts. However, property
contexts are namespace based and only compare the
prefix. This may lead to service associations with
a wrong label.
This patch introduces a new back end for android
services with a stricter lookup function. Now the
service name must match the key of the service label
exactly.
Signed-off-by: Janis Danisevskis <jdanis@android.com>
When building libselinux with gcc and many warning flags, the build
fails with the following errors:
selinux_restorecon.c: In function ‘selinux_restorecon’:
selinux_restorecon.c:784:36: error: comparison between signed and
unsigned integer expressions [-Werror=sign-compare]
if (!flags.ignore_digest && size == fc_digest_len &&
^~
selabel_digest.c: In function ‘main’:
selabel_digest.c:162:16: error: comparison between signed and
unsigned integer expressions [-Werror=sign-compare]
for (i = 0; i < digest_len; i++)
^
selabel_digest.c:173:17: error: comparison between signed and
unsigned integer expressions [-Werror=sign-compare]
for (i = 0; i < num_specfiles; i++) {
^
clang reports the precise type information of the variables:
selinux_restorecon.c:784:36: error: comparison of integers of
different signs: 'ssize_t' (aka 'long') and 'size_t' (aka 'unsigned
long') [-Werror,-Wsign-compare]
if (!flags.ignore_digest && size == fc_digest_len &&
~~~~ ^ ~~~~~~~~~~~~~
selabel_digest.c:162:16: error: comparison of integers of different
signs: 'int' and 'size_t' (aka 'unsigned long')
[-Werror,-Wsign-compare]
for (i = 0; i < digest_len; i++)
~ ^ ~~~~~~~~~~
selabel_digest.c:173:17: error: comparison of integers of different
signs: 'int' and 'size_t' (aka 'unsigned long')
[-Werror,-Wsign-compare]
for (i = 0; i < num_specfiles; i++) {
~ ^ ~~~~~~~~~~~~~
Silent the warnings by using size_t where appropriate.
Signed-off-by: Nicolas Iooss <nicolas.iooss@m4x.org>
If selabel_open is called with no request for a digest it will fail
with ENOENT. This fixes all the labeling routines to resolve this
problem. The utils/selabel_digest example has also been updated
to allow calling selabel_open with and without digest requests to
aid testing.
Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>
selabel_digest(3) if enabled by the SELABEL_OPT_DIGEST option during
selabel_open(3) will return an SHA1 digest of the spec files, plus
a list of the specfiles used to calculate the digest. There is a
test utility supplied that will demonstrate the functionality.
The use case for selabel_digest(3) is to implement an selinux_restorecon
function based on the Android version that writes a hash of the
file_contexts files to an extended attribute to enhance performance
(see external/libselinux/src/android.c selinux_android_restorecon()).
Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>
William Roberts
Janis Danisevskis
Nicolas Iooss
Richard Haines