Some system C libraries do not have SOCK_CLOEXEC, and completely miss
accept4(), too. Provide a fallback for this case.
This changes the behaviour: no error messages are printed now for
failing to set CLOEXEC but the file descriptor is closed.
The unit test for this wrapper is NOT included.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Some system C libraries do not have epoll_create1() nor EPOLL_CLOEXEC,
provide a fallback.
Add tests for the wrapper.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Some system C libraries do not have MSG_CMSG_CLOEXEC. This flag would
automatically set O_CLOEXEC flag on any received file descriptors.
Provide a fallback that does it manually. If setting CLOEXEC fails, the
file descriptor is closed immediately, which will lead to failures but
avoid leaks. However, setting CLOEXEC is not really expected to fail
occasionally.
Add tests for the wrapper. The setup is copied from connection-test.c.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Some system C libraries do not have F_DUPFD_CLOEXEC. Provide a fallback.
Add tests for the new wl_os_dupfd_cloexec() wrapper.
Add per-wrapper call counters in os_wrappers-test.c. Makes it easier to
determine the minimum required number of wrapped calls.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
If it's not already defined, and we are on Linux, #define it. This gets
rid of a load of #ifdefs. This should also allow to use it when the
kernel supports it, but the libc does not define it.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
These events let us track when a surface enters or leaves the scanout region of
an output. This way if a surface moves to another output and that output is on
a different card, we can suggest the toolkit reallocate its buffers
appropriately.
Signed-off-by: Casey Dahlin <cdahlin@redhat.com>
Some system C libraries do not offer SOCK_CLOEXEC flag.
Add a new header for OS compatibility wrappers. Wrap socket() calls into
wl_os_socket_cloexec() which makes sure the O_CLOEXEC flag gets set on
the file descriptor.
On systems having SOCK_CLOEXEC this uses the old socket() call, and
falls back if it fails due to the flag (kernel not supporting it).
wayland-os.h is private and not exported.
Add close-on-exec tests for both normal and forced fallback paths.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add facility for testing how (many) file descriptors survive an exec.
This allows implementing O_CLOEXEC tests.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Add a new macro FAIL_TEST that can be used to define tests that are
supposed to fail. To distinguish the supposed outcome of a test, add a
field to 'struct test'.
However, simply adding a field to 'struct test' will make all tests past
the first one in an executable to be garbage. Apparently, the variables
of type 'struct test' have different alignment when put into a special
section than otherwise, and the compiler will get the skip from one
'struct test' to the next wrong.
Explicitly specify the alingment of 'struct test' to be 16 bytes, which
is what it seems to be in the special section on x86_64.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
Fix a typo, add a comment, change the print format, and add a variable
that will ease implementing tests that are expected to fail.
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
connection.c:530: warning: format '%lu' expects type 'long unsigned
int', but argument 2 has type 'unsigned int'
/connection.c:560: warning: format '%lu' expects type 'long unsigned
int', but argument 2 has type 'unsigned int'
Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
