90 lines
3.9 KiB
C
90 lines
3.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/bits/safemacros.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/struct/stat.h"
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#include "libc/dce.h"
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#include "libc/errno.h"
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#include "libc/runtime/gc.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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int rc;
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struct stat st;
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const char *path;
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int64_t fd, emptyspace, physicalspace;
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TEST(fallocate_000, setup) {
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mkdir("o", 0755);
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mkdir("o/tmp", 0755);
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}
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TEST(fallocate_010, testBadFileDescriptor) {
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if (IsFreebsd()) return; /* TODO: FreeBSD failing to set carry flag bug */
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ASSERT_EQ(-1, fallocate(/*RHEL*/ 5, 0, 0, 1));
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if (errno == ENOSYS) exit(0);
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EXPECT_EQ(EBADF, errno);
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}
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TEST(fallocate_020, test) {
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path = gc(xasprintf("o/tmp/%s.%d", program_invocation_short_name));
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ASSERT_NE(-1, (fd = creat(path, 0755)));
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ASSERT_EQ(5, write(fd, "hello", 5));
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errno = 31337;
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ASSERT_NE(-1, fallocate(fd, 0, 0, 31337));
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EXPECT_EQ(31337, errno);
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ASSERT_EQ(5, write(fd, "world", 5));
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ASSERT_NE(-1, close(fd));
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ASSERT_NE(-1, stat(path, &st));
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ASSERT_EQ(31337, st.st_size);
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ASSERT_BINEQ(u"helloworld", gc(xslurp(path, NULL)));
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unlink(path);
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}
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TEST(fallocate_020, testSparseFile) {
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ASSERT_NE(-1, stat("o", &st));
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emptyspace = rounddown(6 * 1000 * 1000 * 1000, st.st_blksize);
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physicalspace = roundup(4096, st.st_blksize);
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path = gc(xasprintf("o/tmp/%s.%d", program_invocation_short_name, getpid()));
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ASSERT_NE(-1, (fd = creat(path, 0755)));
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rc = fallocate(fd, 0, emptyspace, physicalspace);
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if (rc == -1) {
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/*
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* most important feature is failing w/ enosys if not possible to
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* allocate storage like a central banker prints money.
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*/
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ASSERT_EQ(ENOSYS, errno);
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}
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ASSERT_EQ(emptyspace, lseek(fd, emptyspace, SEEK_SET));
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ASSERT_EQ(5, write(fd, "hello", 5));
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ASSERT_NE(-1, fsync(fd));
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ASSERT_NE(-1, close(fd));
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ASSERT_NE(-1, stat(path, &st));
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EXPECT_EQ(emptyspace + physicalspace, st.st_size);
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/*
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* don't care how much physical space system needs, so long as it's
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* transparent and less than 10 percent the fake space
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*/
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EXPECT_NE(0, st.st_blocks);
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EXPECT_LT(st.st_blocks * 512, emptyspace / 10);
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unlink(path);
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}
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