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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164// SPDX-License-Identifier: GPL-2.0#include <api/fd/array.h>#include <poll.h>#include "util/debug.h"#include "tests/tests.h"
static void fdarray__init_revents(struct fdarray *fda, short revents){ int fd;
fda->nr = fda->nr_alloc;
for (fd = 0; fd < fda->nr; ++fd) { fda->entries[fd].fd = fda->nr - fd; fda->entries[fd].events = revents; fda->entries[fd].revents = revents; }}
static int fdarray__fprintf_prefix(struct fdarray *fda, const char *prefix, FILE *fp){ int printed = 0;
if (verbose <= 0) return 0;
printed += fprintf(fp, "\n%s: ", prefix); return printed + fdarray__fprintf(fda, fp);}
static int test__fdarray__filter(struct test_suite *test __maybe_unused, int subtest __maybe_unused){ int nr_fds, err = TEST_FAIL; struct fdarray *fda = fdarray__new(5, 5);
if (fda == NULL) { pr_debug("\nfdarray__new() failed!"); goto out; }
fdarray__init_revents(fda, POLLIN); nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); if (nr_fds != fda->nr_alloc) { pr_debug("\nfdarray__filter()=%d != %d shouldn't have filtered anything", nr_fds, fda->nr_alloc); goto out_delete; }
fdarray__init_revents(fda, POLLHUP); nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); if (nr_fds != 0) { pr_debug("\nfdarray__filter()=%d != %d, should have filtered all fds", nr_fds, fda->nr_alloc); goto out_delete; }
fdarray__init_revents(fda, POLLHUP); fda->entries[2].revents = POLLIN;
pr_debug("\nfiltering all but fda->entries[2]:"); fdarray__fprintf_prefix(fda, "before", stderr); nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); fdarray__fprintf_prefix(fda, " after", stderr); if (nr_fds != 1) { pr_debug("\nfdarray__filter()=%d != 1, should have left just one event", nr_fds); goto out_delete; }
fdarray__init_revents(fda, POLLHUP); fda->entries[0].revents = POLLIN; fda->entries[3].revents = POLLIN;
pr_debug("\nfiltering all but (fda->entries[0], fda->entries[3]):"); fdarray__fprintf_prefix(fda, "before", stderr); nr_fds = fdarray__filter(fda, POLLHUP, NULL, NULL); fdarray__fprintf_prefix(fda, " after", stderr); if (nr_fds != 2) { pr_debug("\nfdarray__filter()=%d != 2, should have left just two events", nr_fds); goto out_delete; }
pr_debug("\n");
err = 0;out_delete: fdarray__delete(fda);out: return err;}
static int test__fdarray__add(struct test_suite *test __maybe_unused, int subtest __maybe_unused){ int err = TEST_FAIL; struct fdarray *fda = fdarray__new(2, 2);
if (fda == NULL) { pr_debug("\nfdarray__new() failed!"); goto out; }
#define FDA_CHECK(_idx, _fd, _revents) \ if (fda->entries[_idx].fd != _fd) { \ pr_debug("\n%d: fda->entries[%d](%d) != %d!", \ __LINE__, _idx, fda->entries[1].fd, _fd); \ goto out_delete; \ } \ if (fda->entries[_idx].events != (_revents)) { \ pr_debug("\n%d: fda->entries[%d].revents(%d) != %d!", \ __LINE__, _idx, fda->entries[_idx].fd, _revents); \ goto out_delete; \ }
#define FDA_ADD(_idx, _fd, _revents, _nr) \ if (fdarray__add(fda, _fd, _revents, fdarray_flag__default) < 0) { \ pr_debug("\n%d: fdarray__add(fda, %d, %d) failed!", \ __LINE__,_fd, _revents); \ goto out_delete; \ } \ if (fda->nr != _nr) { \ pr_debug("\n%d: fdarray__add(fda, %d, %d)=%d != %d", \ __LINE__,_fd, _revents, fda->nr, _nr); \ goto out_delete; \ } \ FDA_CHECK(_idx, _fd, _revents)
FDA_ADD(0, 1, POLLIN, 1); FDA_ADD(1, 2, POLLERR, 2);
fdarray__fprintf_prefix(fda, "before growing array", stderr);
FDA_ADD(2, 35, POLLHUP, 3);
if (fda->entries == NULL) { pr_debug("\nfdarray__add(fda, 35, POLLHUP) should have allocated fda->pollfd!"); goto out_delete; }
fdarray__fprintf_prefix(fda, "after 3rd add", stderr);
FDA_ADD(3, 88, POLLIN | POLLOUT, 4);
fdarray__fprintf_prefix(fda, "after 4th add", stderr);
FDA_CHECK(0, 1, POLLIN); FDA_CHECK(1, 2, POLLERR); FDA_CHECK(2, 35, POLLHUP); FDA_CHECK(3, 88, POLLIN | POLLOUT);
#undef FDA_ADD#undef FDA_CHECK
pr_debug("\n");
err = 0;out_delete: fdarray__delete(fda);out: return err;}
DEFINE_SUITE("Filter fds with revents mask in a fdarray", fdarray__filter);DEFINE_SUITE("Add fd to a fdarray, making it autogrow", fdarray__add);